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8333 lines
222 KiB
8333 lines
222 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (C) 2016 Namjae Jeon <[email protected]> |
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* Copyright (C) 2018 Samsung Electronics Co., Ltd. |
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*/ |
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|
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#include <linux/inetdevice.h> |
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#include <net/addrconf.h> |
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#include <linux/syscalls.h> |
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#include <linux/namei.h> |
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#include <linux/statfs.h> |
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#include <linux/ethtool.h> |
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#include <linux/falloc.h> |
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|
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#include "glob.h" |
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#include "smb2pdu.h" |
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#include "smbfsctl.h" |
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#include "oplock.h" |
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#include "smbacl.h" |
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|
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#include "auth.h" |
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#include "asn1.h" |
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#include "connection.h" |
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#include "transport_ipc.h" |
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#include "transport_rdma.h" |
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#include "vfs.h" |
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#include "vfs_cache.h" |
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#include "misc.h" |
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#include "server.h" |
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#include "smb_common.h" |
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#include "smbstatus.h" |
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#include "ksmbd_work.h" |
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#include "mgmt/user_config.h" |
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#include "mgmt/share_config.h" |
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#include "mgmt/tree_connect.h" |
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#include "mgmt/user_session.h" |
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#include "mgmt/ksmbd_ida.h" |
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#include "ndr.h" |
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|
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static void __wbuf(struct ksmbd_work *work, void **req, void **rsp) |
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{ |
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if (work->next_smb2_rcv_hdr_off) { |
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*req = ksmbd_req_buf_next(work); |
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*rsp = ksmbd_resp_buf_next(work); |
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} else { |
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*req = work->request_buf; |
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*rsp = work->response_buf; |
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} |
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} |
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#define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs)) |
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/** |
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* check_session_id() - check for valid session id in smb header |
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* @conn: connection instance |
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* @id: session id from smb header |
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* |
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* Return: 1 if valid session id, otherwise 0 |
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*/ |
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static inline bool check_session_id(struct ksmbd_conn *conn, u64 id) |
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{ |
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struct ksmbd_session *sess; |
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|
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if (id == 0 || id == -1) |
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return false; |
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sess = ksmbd_session_lookup_all(conn, id); |
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if (sess) |
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return true; |
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pr_err("Invalid user session id: %llu\n", id); |
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return false; |
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} |
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struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn) |
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{ |
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struct channel *chann; |
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list_for_each_entry(chann, &sess->ksmbd_chann_list, chann_list) { |
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if (chann->conn == conn) |
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return chann; |
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} |
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return NULL; |
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} |
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/** |
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* smb2_get_ksmbd_tcon() - get tree connection information using a tree id. |
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* @work: smb work |
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* |
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* Return: 0 if there is a tree connection matched or these are |
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* skipable commands, otherwise error |
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*/ |
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int smb2_get_ksmbd_tcon(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *req_hdr = work->request_buf; |
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int tree_id; |
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work->tcon = NULL; |
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if (work->conn->ops->get_cmd_val(work) == SMB2_TREE_CONNECT_HE || |
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work->conn->ops->get_cmd_val(work) == SMB2_CANCEL_HE || |
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work->conn->ops->get_cmd_val(work) == SMB2_LOGOFF_HE) { |
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ksmbd_debug(SMB, "skip to check tree connect request\n"); |
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return 0; |
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} |
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if (xa_empty(&work->sess->tree_conns)) { |
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ksmbd_debug(SMB, "NO tree connected\n"); |
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return -ENOENT; |
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} |
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tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId); |
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work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id); |
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if (!work->tcon) { |
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pr_err("Invalid tid %d\n", tree_id); |
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return -EINVAL; |
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} |
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return 1; |
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} |
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/** |
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* smb2_set_err_rsp() - set error response code on smb response |
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* @work: smb work containing response buffer |
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*/ |
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void smb2_set_err_rsp(struct ksmbd_work *work) |
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{ |
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struct smb2_err_rsp *err_rsp; |
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if (work->next_smb2_rcv_hdr_off) |
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err_rsp = ksmbd_resp_buf_next(work); |
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else |
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err_rsp = work->response_buf; |
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if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) { |
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err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE; |
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err_rsp->ErrorContextCount = 0; |
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err_rsp->Reserved = 0; |
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err_rsp->ByteCount = 0; |
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err_rsp->ErrorData[0] = 0; |
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inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2); |
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} |
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} |
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/** |
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* is_smb2_neg_cmd() - is it smb2 negotiation command |
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* @work: smb work containing smb header |
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* |
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* Return: true if smb2 negotiation command, otherwise false |
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*/ |
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bool is_smb2_neg_cmd(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *hdr = work->request_buf; |
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/* is it SMB2 header ? */ |
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if (hdr->ProtocolId != SMB2_PROTO_NUMBER) |
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return false; |
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/* make sure it is request not response message */ |
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if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR) |
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return false; |
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if (hdr->Command != SMB2_NEGOTIATE) |
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return false; |
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return true; |
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} |
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/** |
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* is_smb2_rsp() - is it smb2 response |
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* @work: smb work containing smb response buffer |
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* |
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* Return: true if smb2 response, otherwise false |
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*/ |
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bool is_smb2_rsp(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *hdr = work->response_buf; |
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/* is it SMB2 header ? */ |
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if (hdr->ProtocolId != SMB2_PROTO_NUMBER) |
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return false; |
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/* make sure it is response not request message */ |
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if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)) |
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return false; |
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return true; |
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} |
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/** |
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* get_smb2_cmd_val() - get smb command code from smb header |
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* @work: smb work containing smb request buffer |
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* |
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* Return: smb2 request command value |
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*/ |
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u16 get_smb2_cmd_val(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *rcv_hdr; |
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|
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if (work->next_smb2_rcv_hdr_off) |
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rcv_hdr = ksmbd_req_buf_next(work); |
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else |
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rcv_hdr = work->request_buf; |
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return le16_to_cpu(rcv_hdr->Command); |
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} |
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/** |
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* set_smb2_rsp_status() - set error response code on smb2 header |
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* @work: smb work containing response buffer |
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* @err: error response code |
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*/ |
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void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err) |
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{ |
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struct smb2_hdr *rsp_hdr; |
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|
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if (work->next_smb2_rcv_hdr_off) |
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rsp_hdr = ksmbd_resp_buf_next(work); |
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else |
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rsp_hdr = work->response_buf; |
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rsp_hdr->Status = err; |
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smb2_set_err_rsp(work); |
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} |
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/** |
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* init_smb2_neg_rsp() - initialize smb2 response for negotiate command |
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* @work: smb work containing smb request buffer |
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* |
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* smb2 negotiate response is sent in reply of smb1 negotiate command for |
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* dialect auto-negotiation. |
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*/ |
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int init_smb2_neg_rsp(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *rsp_hdr; |
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struct smb2_negotiate_rsp *rsp; |
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struct ksmbd_conn *conn = work->conn; |
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if (conn->need_neg == false) |
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return -EINVAL; |
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if (!(conn->dialect >= SMB20_PROT_ID && |
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conn->dialect <= SMB311_PROT_ID)) |
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return -EINVAL; |
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rsp_hdr = work->response_buf; |
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memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); |
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rsp_hdr->smb2_buf_length = |
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cpu_to_be32(smb2_hdr_size_no_buflen(conn->vals)); |
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rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; |
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rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; |
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rsp_hdr->CreditRequest = cpu_to_le16(2); |
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rsp_hdr->Command = SMB2_NEGOTIATE; |
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rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); |
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rsp_hdr->NextCommand = 0; |
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rsp_hdr->MessageId = 0; |
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rsp_hdr->Id.SyncId.ProcessId = 0; |
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rsp_hdr->Id.SyncId.TreeId = 0; |
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rsp_hdr->SessionId = 0; |
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memset(rsp_hdr->Signature, 0, 16); |
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rsp = work->response_buf; |
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WARN_ON(ksmbd_conn_good(work)); |
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rsp->StructureSize = cpu_to_le16(65); |
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ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect); |
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rsp->DialectRevision = cpu_to_le16(conn->dialect); |
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/* Not setting conn guid rsp->ServerGUID, as it |
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* not used by client for identifying connection |
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*/ |
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rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); |
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/* Default Max Message Size till SMB2.0, 64K*/ |
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rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); |
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rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); |
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rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); |
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rsp->SystemTime = cpu_to_le64(ksmbd_systime()); |
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rsp->ServerStartTime = 0; |
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rsp->SecurityBufferOffset = cpu_to_le16(128); |
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rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); |
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ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) + |
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sizeof(rsp->hdr.smb2_buf_length)) + |
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le16_to_cpu(rsp->SecurityBufferOffset)); |
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inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) - |
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sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) + |
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AUTH_GSS_LENGTH); |
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rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; |
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if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) |
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rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; |
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conn->use_spnego = true; |
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ksmbd_conn_set_need_negotiate(work); |
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return 0; |
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} |
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static int smb2_consume_credit_charge(struct ksmbd_work *work, |
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unsigned short credit_charge) |
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{ |
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struct ksmbd_conn *conn = work->conn; |
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unsigned int rsp_credits = 1; |
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if (!conn->total_credits) |
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return 0; |
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if (credit_charge > 0) |
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rsp_credits = credit_charge; |
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conn->total_credits -= rsp_credits; |
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return rsp_credits; |
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} |
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/** |
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* smb2_set_rsp_credits() - set number of credits in response buffer |
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* @work: smb work containing smb response buffer |
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*/ |
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int smb2_set_rsp_credits(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *req_hdr = ksmbd_req_buf_next(work); |
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struct smb2_hdr *hdr = ksmbd_resp_buf_next(work); |
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struct ksmbd_conn *conn = work->conn; |
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unsigned short credits_requested = le16_to_cpu(req_hdr->CreditRequest); |
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unsigned short credit_charge = 1, credits_granted = 0; |
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unsigned short aux_max, aux_credits, min_credits; |
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int rsp_credit_charge; |
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if (hdr->Command == SMB2_CANCEL) |
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goto out; |
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/* get default minimum credits by shifting maximum credits by 4 */ |
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min_credits = conn->max_credits >> 4; |
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if (conn->total_credits >= conn->max_credits) { |
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pr_err("Total credits overflow: %d\n", conn->total_credits); |
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conn->total_credits = min_credits; |
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} |
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rsp_credit_charge = |
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smb2_consume_credit_charge(work, le16_to_cpu(req_hdr->CreditCharge)); |
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if (rsp_credit_charge < 0) |
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return -EINVAL; |
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hdr->CreditCharge = cpu_to_le16(rsp_credit_charge); |
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if (credits_requested > 0) { |
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aux_credits = credits_requested - 1; |
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aux_max = 32; |
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if (hdr->Command == SMB2_NEGOTIATE) |
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aux_max = 0; |
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aux_credits = (aux_credits < aux_max) ? aux_credits : aux_max; |
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credits_granted = aux_credits + credit_charge; |
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|
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/* if credits granted per client is getting bigger than default |
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* minimum credits then we should wrap it up within the limits. |
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*/ |
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if ((conn->total_credits + credits_granted) > min_credits) |
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credits_granted = min_credits - conn->total_credits; |
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/* |
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* TODO: Need to adjuct CreditRequest value according to |
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* current cpu load |
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*/ |
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} else if (conn->total_credits == 0) { |
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credits_granted = 1; |
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} |
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conn->total_credits += credits_granted; |
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work->credits_granted += credits_granted; |
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|
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if (!req_hdr->NextCommand) { |
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/* Update CreditRequest in last request */ |
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hdr->CreditRequest = cpu_to_le16(work->credits_granted); |
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} |
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out: |
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ksmbd_debug(SMB, |
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"credits: requested[%d] granted[%d] total_granted[%d]\n", |
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credits_requested, credits_granted, |
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conn->total_credits); |
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return 0; |
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} |
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/** |
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* init_chained_smb2_rsp() - initialize smb2 chained response |
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* @work: smb work containing smb response buffer |
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*/ |
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static void init_chained_smb2_rsp(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *req = ksmbd_req_buf_next(work); |
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struct smb2_hdr *rsp = ksmbd_resp_buf_next(work); |
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struct smb2_hdr *rsp_hdr; |
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struct smb2_hdr *rcv_hdr; |
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int next_hdr_offset = 0; |
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int len, new_len; |
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|
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/* Len of this response = updated RFC len - offset of previous cmd |
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* in the compound rsp |
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*/ |
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|
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/* Storing the current local FID which may be needed by subsequent |
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* command in the compound request |
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*/ |
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if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) { |
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work->compound_fid = |
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le64_to_cpu(((struct smb2_create_rsp *)rsp)-> |
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VolatileFileId); |
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work->compound_pfid = |
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le64_to_cpu(((struct smb2_create_rsp *)rsp)-> |
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PersistentFileId); |
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work->compound_sid = le64_to_cpu(rsp->SessionId); |
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} |
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|
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len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off; |
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next_hdr_offset = le32_to_cpu(req->NextCommand); |
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|
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new_len = ALIGN(len, 8); |
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inc_rfc1001_len(work->response_buf, ((sizeof(struct smb2_hdr) - 4) |
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+ new_len - len)); |
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rsp->NextCommand = cpu_to_le32(new_len); |
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|
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work->next_smb2_rcv_hdr_off += next_hdr_offset; |
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work->next_smb2_rsp_hdr_off += new_len; |
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ksmbd_debug(SMB, |
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"Compound req new_len = %d rcv off = %d rsp off = %d\n", |
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new_len, work->next_smb2_rcv_hdr_off, |
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work->next_smb2_rsp_hdr_off); |
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|
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rsp_hdr = ksmbd_resp_buf_next(work); |
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rcv_hdr = ksmbd_req_buf_next(work); |
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|
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if (!(rcv_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { |
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ksmbd_debug(SMB, "related flag should be set\n"); |
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work->compound_fid = KSMBD_NO_FID; |
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work->compound_pfid = KSMBD_NO_FID; |
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} |
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memset((char *)rsp_hdr + 4, 0, sizeof(struct smb2_hdr) + 2); |
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rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; |
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rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; |
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rsp_hdr->Command = rcv_hdr->Command; |
|
|
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/* |
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* Message is response. We don't grant oplock yet. |
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*/ |
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rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR | |
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SMB2_FLAGS_RELATED_OPERATIONS); |
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rsp_hdr->NextCommand = 0; |
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rsp_hdr->MessageId = rcv_hdr->MessageId; |
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rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; |
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rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; |
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rsp_hdr->SessionId = rcv_hdr->SessionId; |
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memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); |
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} |
|
|
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/** |
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* is_chained_smb2_message() - check for chained command |
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* @work: smb work containing smb request buffer |
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* |
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* Return: true if chained request, otherwise false |
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*/ |
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bool is_chained_smb2_message(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *hdr = work->request_buf; |
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unsigned int len; |
|
|
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if (hdr->ProtocolId != SMB2_PROTO_NUMBER) |
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return false; |
|
|
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hdr = ksmbd_req_buf_next(work); |
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if (le32_to_cpu(hdr->NextCommand) > 0) { |
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ksmbd_debug(SMB, "got SMB2 chained command\n"); |
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init_chained_smb2_rsp(work); |
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return true; |
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} else if (work->next_smb2_rcv_hdr_off) { |
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/* |
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* This is last request in chained command, |
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* align response to 8 byte |
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*/ |
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len = ALIGN(get_rfc1002_len(work->response_buf), 8); |
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len = len - get_rfc1002_len(work->response_buf); |
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if (len) { |
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ksmbd_debug(SMB, "padding len %u\n", len); |
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inc_rfc1001_len(work->response_buf, len); |
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if (work->aux_payload_sz) |
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work->aux_payload_sz += len; |
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} |
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} |
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return false; |
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} |
|
|
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/** |
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* init_smb2_rsp_hdr() - initialize smb2 response |
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* @work: smb work containing smb request buffer |
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* |
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* Return: 0 |
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*/ |
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int init_smb2_rsp_hdr(struct ksmbd_work *work) |
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{ |
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struct smb2_hdr *rsp_hdr = work->response_buf; |
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struct smb2_hdr *rcv_hdr = work->request_buf; |
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struct ksmbd_conn *conn = work->conn; |
|
|
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memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); |
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rsp_hdr->smb2_buf_length = |
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cpu_to_be32(smb2_hdr_size_no_buflen(conn->vals)); |
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rsp_hdr->ProtocolId = rcv_hdr->ProtocolId; |
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rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; |
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rsp_hdr->Command = rcv_hdr->Command; |
|
|
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/* |
|
* Message is response. We don't grant oplock yet. |
|
*/ |
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rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); |
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rsp_hdr->NextCommand = 0; |
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rsp_hdr->MessageId = rcv_hdr->MessageId; |
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rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; |
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rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; |
|
rsp_hdr->SessionId = rcv_hdr->SessionId; |
|
memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); |
|
|
|
work->syncronous = true; |
|
if (work->async_id) { |
|
ksmbd_release_id(&conn->async_ida, work->async_id); |
|
work->async_id = 0; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_allocate_rsp_buf() - allocate smb2 response buffer |
|
* @work: smb work containing smb request buffer |
|
* |
|
* Return: 0 on success, otherwise -ENOMEM |
|
*/ |
|
int smb2_allocate_rsp_buf(struct ksmbd_work *work) |
|
{ |
|
struct smb2_hdr *hdr = work->request_buf; |
|
size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE; |
|
size_t large_sz = work->conn->vals->max_trans_size + MAX_SMB2_HDR_SIZE; |
|
size_t sz = small_sz; |
|
int cmd = le16_to_cpu(hdr->Command); |
|
|
|
if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE) |
|
sz = large_sz; |
|
|
|
if (cmd == SMB2_QUERY_INFO_HE) { |
|
struct smb2_query_info_req *req; |
|
|
|
req = work->request_buf; |
|
if (req->InfoType == SMB2_O_INFO_FILE && |
|
(req->FileInfoClass == FILE_FULL_EA_INFORMATION || |
|
req->FileInfoClass == FILE_ALL_INFORMATION)) |
|
sz = large_sz; |
|
} |
|
|
|
/* allocate large response buf for chained commands */ |
|
if (le32_to_cpu(hdr->NextCommand) > 0) |
|
sz = large_sz; |
|
|
|
work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO); |
|
if (!work->response_buf) |
|
return -ENOMEM; |
|
|
|
work->response_sz = sz; |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_check_user_session() - check for valid session for a user |
|
* @work: smb work containing smb request buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_check_user_session(struct ksmbd_work *work) |
|
{ |
|
struct smb2_hdr *req_hdr = work->request_buf; |
|
struct ksmbd_conn *conn = work->conn; |
|
unsigned int cmd = conn->ops->get_cmd_val(work); |
|
unsigned long long sess_id; |
|
|
|
work->sess = NULL; |
|
/* |
|
* SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not |
|
* require a session id, so no need to validate user session's for |
|
* these commands. |
|
*/ |
|
if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE || |
|
cmd == SMB2_SESSION_SETUP_HE) |
|
return 0; |
|
|
|
if (!ksmbd_conn_good(work)) |
|
return -EINVAL; |
|
|
|
sess_id = le64_to_cpu(req_hdr->SessionId); |
|
/* Check for validity of user session */ |
|
work->sess = ksmbd_session_lookup_all(conn, sess_id); |
|
if (work->sess) |
|
return 1; |
|
ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id); |
|
return -EINVAL; |
|
} |
|
|
|
static void destroy_previous_session(struct ksmbd_user *user, u64 id) |
|
{ |
|
struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id); |
|
struct ksmbd_user *prev_user; |
|
|
|
if (!prev_sess) |
|
return; |
|
|
|
prev_user = prev_sess->user; |
|
|
|
if (!prev_user || |
|
strcmp(user->name, prev_user->name) || |
|
user->passkey_sz != prev_user->passkey_sz || |
|
memcmp(user->passkey, prev_user->passkey, user->passkey_sz)) { |
|
put_session(prev_sess); |
|
return; |
|
} |
|
|
|
put_session(prev_sess); |
|
ksmbd_session_destroy(prev_sess); |
|
} |
|
|
|
/** |
|
* smb2_get_name() - get filename string from on the wire smb format |
|
* @share: ksmbd_share_config pointer |
|
* @src: source buffer |
|
* @maxlen: maxlen of source string |
|
* @nls_table: nls_table pointer |
|
* |
|
* Return: matching converted filename on success, otherwise error ptr |
|
*/ |
|
static char * |
|
smb2_get_name(struct ksmbd_share_config *share, const char *src, |
|
const int maxlen, struct nls_table *local_nls) |
|
{ |
|
char *name; |
|
|
|
name = smb_strndup_from_utf16(src, maxlen, 1, local_nls); |
|
if (IS_ERR(name)) { |
|
pr_err("failed to get name %ld\n", PTR_ERR(name)); |
|
return name; |
|
} |
|
|
|
ksmbd_conv_path_to_unix(name); |
|
ksmbd_strip_last_slash(name); |
|
return name; |
|
} |
|
|
|
int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg) |
|
{ |
|
struct smb2_hdr *rsp_hdr; |
|
struct ksmbd_conn *conn = work->conn; |
|
int id; |
|
|
|
rsp_hdr = work->response_buf; |
|
rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND; |
|
|
|
id = ksmbd_acquire_async_msg_id(&conn->async_ida); |
|
if (id < 0) { |
|
pr_err("Failed to alloc async message id\n"); |
|
return id; |
|
} |
|
work->syncronous = false; |
|
work->async_id = id; |
|
rsp_hdr->Id.AsyncId = cpu_to_le64(id); |
|
|
|
ksmbd_debug(SMB, |
|
"Send interim Response to inform async request id : %d\n", |
|
work->async_id); |
|
|
|
work->cancel_fn = fn; |
|
work->cancel_argv = arg; |
|
|
|
if (list_empty(&work->async_request_entry)) { |
|
spin_lock(&conn->request_lock); |
|
list_add_tail(&work->async_request_entry, &conn->async_requests); |
|
spin_unlock(&conn->request_lock); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status) |
|
{ |
|
struct smb2_hdr *rsp_hdr; |
|
|
|
rsp_hdr = work->response_buf; |
|
smb2_set_err_rsp(work); |
|
rsp_hdr->Status = status; |
|
|
|
work->multiRsp = 1; |
|
ksmbd_conn_write(work); |
|
rsp_hdr->Status = 0; |
|
work->multiRsp = 0; |
|
} |
|
|
|
static __le32 smb2_get_reparse_tag_special_file(umode_t mode) |
|
{ |
|
if (S_ISDIR(mode) || S_ISREG(mode)) |
|
return 0; |
|
|
|
if (S_ISLNK(mode)) |
|
return IO_REPARSE_TAG_LX_SYMLINK_LE; |
|
else if (S_ISFIFO(mode)) |
|
return IO_REPARSE_TAG_LX_FIFO_LE; |
|
else if (S_ISSOCK(mode)) |
|
return IO_REPARSE_TAG_AF_UNIX_LE; |
|
else if (S_ISCHR(mode)) |
|
return IO_REPARSE_TAG_LX_CHR_LE; |
|
else if (S_ISBLK(mode)) |
|
return IO_REPARSE_TAG_LX_BLK_LE; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_get_dos_mode() - get file mode in dos format from unix mode |
|
* @stat: kstat containing file mode |
|
* @attribute: attribute flags |
|
* |
|
* Return: converted dos mode |
|
*/ |
|
static int smb2_get_dos_mode(struct kstat *stat, int attribute) |
|
{ |
|
int attr = 0; |
|
|
|
if (S_ISDIR(stat->mode)) { |
|
attr = ATTR_DIRECTORY | |
|
(attribute & (ATTR_HIDDEN | ATTR_SYSTEM)); |
|
} else { |
|
attr = (attribute & 0x00005137) | ATTR_ARCHIVE; |
|
attr &= ~(ATTR_DIRECTORY); |
|
if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps & |
|
FILE_SUPPORTS_SPARSE_FILES)) |
|
attr |= ATTR_SPARSE; |
|
|
|
if (smb2_get_reparse_tag_special_file(stat->mode)) |
|
attr |= ATTR_REPARSE; |
|
} |
|
|
|
return attr; |
|
} |
|
|
|
static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt, |
|
__le16 hash_id) |
|
{ |
|
pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES; |
|
pneg_ctxt->DataLength = cpu_to_le16(38); |
|
pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1); |
|
pneg_ctxt->Reserved = cpu_to_le32(0); |
|
pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE); |
|
get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE); |
|
pneg_ctxt->HashAlgorithms = hash_id; |
|
} |
|
|
|
static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt, |
|
__le16 cipher_type) |
|
{ |
|
pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES; |
|
pneg_ctxt->DataLength = cpu_to_le16(4); |
|
pneg_ctxt->Reserved = cpu_to_le32(0); |
|
pneg_ctxt->CipherCount = cpu_to_le16(1); |
|
pneg_ctxt->Ciphers[0] = cipher_type; |
|
} |
|
|
|
static void build_compression_ctxt(struct smb2_compression_ctx *pneg_ctxt, |
|
__le16 comp_algo) |
|
{ |
|
pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES; |
|
pneg_ctxt->DataLength = |
|
cpu_to_le16(sizeof(struct smb2_compression_ctx) |
|
- sizeof(struct smb2_neg_context)); |
|
pneg_ctxt->Reserved = cpu_to_le32(0); |
|
pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1); |
|
pneg_ctxt->Reserved1 = cpu_to_le32(0); |
|
pneg_ctxt->CompressionAlgorithms[0] = comp_algo; |
|
} |
|
|
|
static void build_sign_cap_ctxt(struct smb2_signing_capabilities *pneg_ctxt, |
|
__le16 sign_algo) |
|
{ |
|
pneg_ctxt->ContextType = SMB2_SIGNING_CAPABILITIES; |
|
pneg_ctxt->DataLength = |
|
cpu_to_le16((sizeof(struct smb2_signing_capabilities) + 2) |
|
- sizeof(struct smb2_neg_context)); |
|
pneg_ctxt->Reserved = cpu_to_le32(0); |
|
pneg_ctxt->SigningAlgorithmCount = cpu_to_le16(1); |
|
pneg_ctxt->SigningAlgorithms[0] = sign_algo; |
|
} |
|
|
|
static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) |
|
{ |
|
pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE; |
|
pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); |
|
/* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ |
|
pneg_ctxt->Name[0] = 0x93; |
|
pneg_ctxt->Name[1] = 0xAD; |
|
pneg_ctxt->Name[2] = 0x25; |
|
pneg_ctxt->Name[3] = 0x50; |
|
pneg_ctxt->Name[4] = 0x9C; |
|
pneg_ctxt->Name[5] = 0xB4; |
|
pneg_ctxt->Name[6] = 0x11; |
|
pneg_ctxt->Name[7] = 0xE7; |
|
pneg_ctxt->Name[8] = 0xB4; |
|
pneg_ctxt->Name[9] = 0x23; |
|
pneg_ctxt->Name[10] = 0x83; |
|
pneg_ctxt->Name[11] = 0xDE; |
|
pneg_ctxt->Name[12] = 0x96; |
|
pneg_ctxt->Name[13] = 0x8B; |
|
pneg_ctxt->Name[14] = 0xCD; |
|
pneg_ctxt->Name[15] = 0x7C; |
|
} |
|
|
|
static void assemble_neg_contexts(struct ksmbd_conn *conn, |
|
struct smb2_negotiate_rsp *rsp) |
|
{ |
|
/* +4 is to account for the RFC1001 len field */ |
|
char *pneg_ctxt = (char *)rsp + |
|
le32_to_cpu(rsp->NegotiateContextOffset) + 4; |
|
int neg_ctxt_cnt = 1; |
|
int ctxt_size; |
|
|
|
ksmbd_debug(SMB, |
|
"assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
|
build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt, |
|
conn->preauth_info->Preauth_HashId); |
|
rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt); |
|
inc_rfc1001_len(rsp, AUTH_GSS_PADDING); |
|
ctxt_size = sizeof(struct smb2_preauth_neg_context); |
|
/* Round to 8 byte boundary */ |
|
pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8); |
|
|
|
if (conn->cipher_type) { |
|
ctxt_size = round_up(ctxt_size, 8); |
|
ksmbd_debug(SMB, |
|
"assemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
|
build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt, |
|
conn->cipher_type); |
|
rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
|
ctxt_size += sizeof(struct smb2_encryption_neg_context) + 2; |
|
/* Round to 8 byte boundary */ |
|
pneg_ctxt += |
|
round_up(sizeof(struct smb2_encryption_neg_context) + 2, |
|
8); |
|
} |
|
|
|
if (conn->compress_algorithm) { |
|
ctxt_size = round_up(ctxt_size, 8); |
|
ksmbd_debug(SMB, |
|
"assemble SMB2_COMPRESSION_CAPABILITIES context\n"); |
|
/* Temporarily set to SMB3_COMPRESS_NONE */ |
|
build_compression_ctxt((struct smb2_compression_ctx *)pneg_ctxt, |
|
conn->compress_algorithm); |
|
rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
|
ctxt_size += sizeof(struct smb2_compression_ctx) + 2; |
|
/* Round to 8 byte boundary */ |
|
pneg_ctxt += round_up(sizeof(struct smb2_compression_ctx) + 2, |
|
8); |
|
} |
|
|
|
if (conn->posix_ext_supported) { |
|
ctxt_size = round_up(ctxt_size, 8); |
|
ksmbd_debug(SMB, |
|
"assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
|
build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt); |
|
rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
|
ctxt_size += sizeof(struct smb2_posix_neg_context); |
|
/* Round to 8 byte boundary */ |
|
pneg_ctxt += round_up(sizeof(struct smb2_posix_neg_context), 8); |
|
} |
|
|
|
if (conn->signing_negotiated) { |
|
ctxt_size = round_up(ctxt_size, 8); |
|
ksmbd_debug(SMB, |
|
"assemble SMB2_SIGNING_CAPABILITIES context\n"); |
|
build_sign_cap_ctxt((struct smb2_signing_capabilities *)pneg_ctxt, |
|
conn->signing_algorithm); |
|
rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
|
ctxt_size += sizeof(struct smb2_signing_capabilities) + 2; |
|
} |
|
|
|
inc_rfc1001_len(rsp, ctxt_size); |
|
} |
|
|
|
static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn, |
|
struct smb2_preauth_neg_context *pneg_ctxt) |
|
{ |
|
__le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP; |
|
|
|
if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) { |
|
conn->preauth_info->Preauth_HashId = |
|
SMB2_PREAUTH_INTEGRITY_SHA512; |
|
err = STATUS_SUCCESS; |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static void decode_encrypt_ctxt(struct ksmbd_conn *conn, |
|
struct smb2_encryption_neg_context *pneg_ctxt, |
|
int len_of_ctxts) |
|
{ |
|
int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount); |
|
int i, cphs_size = cph_cnt * sizeof(__le16); |
|
|
|
conn->cipher_type = 0; |
|
|
|
if (sizeof(struct smb2_encryption_neg_context) + cphs_size > |
|
len_of_ctxts) { |
|
pr_err("Invalid cipher count(%d)\n", cph_cnt); |
|
return; |
|
} |
|
|
|
if (!(server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION)) |
|
return; |
|
|
|
for (i = 0; i < cph_cnt; i++) { |
|
if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM || |
|
pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM || |
|
pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM || |
|
pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) { |
|
ksmbd_debug(SMB, "Cipher ID = 0x%x\n", |
|
pneg_ctxt->Ciphers[i]); |
|
conn->cipher_type = pneg_ctxt->Ciphers[i]; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
static void decode_compress_ctxt(struct ksmbd_conn *conn, |
|
struct smb2_compression_ctx *pneg_ctxt) |
|
{ |
|
conn->compress_algorithm = SMB3_COMPRESS_NONE; |
|
} |
|
|
|
static void decode_sign_cap_ctxt(struct ksmbd_conn *conn, |
|
struct smb2_signing_capabilities *pneg_ctxt, |
|
int len_of_ctxts) |
|
{ |
|
int sign_algo_cnt = le16_to_cpu(pneg_ctxt->SigningAlgorithmCount); |
|
int i, sign_alos_size = sign_algo_cnt * sizeof(__le16); |
|
|
|
conn->signing_negotiated = false; |
|
|
|
if (sizeof(struct smb2_signing_capabilities) + sign_alos_size > |
|
len_of_ctxts) { |
|
pr_err("Invalid signing algorithm count(%d)\n", sign_algo_cnt); |
|
return; |
|
} |
|
|
|
for (i = 0; i < sign_algo_cnt; i++) { |
|
if (pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_HMAC_SHA256 || |
|
pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_AES_CMAC) { |
|
ksmbd_debug(SMB, "Signing Algorithm ID = 0x%x\n", |
|
pneg_ctxt->SigningAlgorithms[i]); |
|
conn->signing_negotiated = true; |
|
conn->signing_algorithm = |
|
pneg_ctxt->SigningAlgorithms[i]; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn, |
|
struct smb2_negotiate_req *req) |
|
{ |
|
/* +4 is to account for the RFC1001 len field */ |
|
struct smb2_neg_context *pctx = (struct smb2_neg_context *)((char *)req + 4); |
|
int i = 0, len_of_ctxts; |
|
int offset = le32_to_cpu(req->NegotiateContextOffset); |
|
int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount); |
|
int len_of_smb = be32_to_cpu(req->hdr.smb2_buf_length); |
|
__le32 status = STATUS_INVALID_PARAMETER; |
|
|
|
ksmbd_debug(SMB, "decoding %d negotiate contexts\n", neg_ctxt_cnt); |
|
if (len_of_smb <= offset) { |
|
ksmbd_debug(SMB, "Invalid response: negotiate context offset\n"); |
|
return status; |
|
} |
|
|
|
len_of_ctxts = len_of_smb - offset; |
|
|
|
while (i++ < neg_ctxt_cnt) { |
|
int clen; |
|
|
|
/* check that offset is not beyond end of SMB */ |
|
if (len_of_ctxts == 0) |
|
break; |
|
|
|
if (len_of_ctxts < sizeof(struct smb2_neg_context)) |
|
break; |
|
|
|
pctx = (struct smb2_neg_context *)((char *)pctx + offset); |
|
clen = le16_to_cpu(pctx->DataLength); |
|
if (clen + sizeof(struct smb2_neg_context) > len_of_ctxts) |
|
break; |
|
|
|
if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) { |
|
ksmbd_debug(SMB, |
|
"deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
|
if (conn->preauth_info->Preauth_HashId) |
|
break; |
|
|
|
status = decode_preauth_ctxt(conn, |
|
(struct smb2_preauth_neg_context *)pctx); |
|
if (status != STATUS_SUCCESS) |
|
break; |
|
} else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) { |
|
ksmbd_debug(SMB, |
|
"deassemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
|
if (conn->cipher_type) |
|
break; |
|
|
|
decode_encrypt_ctxt(conn, |
|
(struct smb2_encryption_neg_context *)pctx, |
|
len_of_ctxts); |
|
} else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) { |
|
ksmbd_debug(SMB, |
|
"deassemble SMB2_COMPRESSION_CAPABILITIES context\n"); |
|
if (conn->compress_algorithm) |
|
break; |
|
|
|
decode_compress_ctxt(conn, |
|
(struct smb2_compression_ctx *)pctx); |
|
} else if (pctx->ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) { |
|
ksmbd_debug(SMB, |
|
"deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n"); |
|
} else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) { |
|
ksmbd_debug(SMB, |
|
"deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
|
conn->posix_ext_supported = true; |
|
} else if (pctx->ContextType == SMB2_SIGNING_CAPABILITIES) { |
|
ksmbd_debug(SMB, |
|
"deassemble SMB2_SIGNING_CAPABILITIES context\n"); |
|
decode_sign_cap_ctxt(conn, |
|
(struct smb2_signing_capabilities *)pctx, |
|
len_of_ctxts); |
|
} |
|
|
|
/* offsets must be 8 byte aligned */ |
|
clen = (clen + 7) & ~0x7; |
|
offset = clen + sizeof(struct smb2_neg_context); |
|
len_of_ctxts -= clen + sizeof(struct smb2_neg_context); |
|
} |
|
return status; |
|
} |
|
|
|
/** |
|
* smb2_handle_negotiate() - handler for smb2 negotiate command |
|
* @work: smb work containing smb request buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
int smb2_handle_negotiate(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_negotiate_req *req = work->request_buf; |
|
struct smb2_negotiate_rsp *rsp = work->response_buf; |
|
int rc = 0; |
|
__le32 status; |
|
|
|
ksmbd_debug(SMB, "Received negotiate request\n"); |
|
conn->need_neg = false; |
|
if (ksmbd_conn_good(work)) { |
|
pr_err("conn->tcp_status is already in CifsGood State\n"); |
|
work->send_no_response = 1; |
|
return rc; |
|
} |
|
|
|
if (req->DialectCount == 0) { |
|
pr_err("malformed packet\n"); |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
rc = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
conn->cli_cap = le32_to_cpu(req->Capabilities); |
|
switch (conn->dialect) { |
|
case SMB311_PROT_ID: |
|
conn->preauth_info = |
|
kzalloc(sizeof(struct preauth_integrity_info), |
|
GFP_KERNEL); |
|
if (!conn->preauth_info) { |
|
rc = -ENOMEM; |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
goto err_out; |
|
} |
|
|
|
status = deassemble_neg_contexts(conn, req); |
|
if (status != STATUS_SUCCESS) { |
|
pr_err("deassemble_neg_contexts error(0x%x)\n", |
|
status); |
|
rsp->hdr.Status = status; |
|
rc = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
rc = init_smb3_11_server(conn); |
|
if (rc < 0) { |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
goto err_out; |
|
} |
|
|
|
ksmbd_gen_preauth_integrity_hash(conn, |
|
work->request_buf, |
|
conn->preauth_info->Preauth_HashValue); |
|
rsp->NegotiateContextOffset = |
|
cpu_to_le32(OFFSET_OF_NEG_CONTEXT); |
|
assemble_neg_contexts(conn, rsp); |
|
break; |
|
case SMB302_PROT_ID: |
|
init_smb3_02_server(conn); |
|
break; |
|
case SMB30_PROT_ID: |
|
init_smb3_0_server(conn); |
|
break; |
|
case SMB21_PROT_ID: |
|
init_smb2_1_server(conn); |
|
break; |
|
case SMB20_PROT_ID: |
|
rc = init_smb2_0_server(conn); |
|
if (rc) { |
|
rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
|
goto err_out; |
|
} |
|
break; |
|
case SMB2X_PROT_ID: |
|
case BAD_PROT_ID: |
|
default: |
|
ksmbd_debug(SMB, "Server dialect :0x%x not supported\n", |
|
conn->dialect); |
|
rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
|
rc = -EINVAL; |
|
goto err_out; |
|
} |
|
rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); |
|
|
|
/* For stats */ |
|
conn->connection_type = conn->dialect; |
|
|
|
rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); |
|
rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); |
|
rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); |
|
|
|
if (conn->dialect > SMB20_PROT_ID) { |
|
memcpy(conn->ClientGUID, req->ClientGUID, |
|
SMB2_CLIENT_GUID_SIZE); |
|
conn->cli_sec_mode = le16_to_cpu(req->SecurityMode); |
|
} |
|
|
|
rsp->StructureSize = cpu_to_le16(65); |
|
rsp->DialectRevision = cpu_to_le16(conn->dialect); |
|
/* Not setting conn guid rsp->ServerGUID, as it |
|
* not used by client for identifying server |
|
*/ |
|
memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE); |
|
|
|
rsp->SystemTime = cpu_to_le64(ksmbd_systime()); |
|
rsp->ServerStartTime = 0; |
|
ksmbd_debug(SMB, "negotiate context offset %d, count %d\n", |
|
le32_to_cpu(rsp->NegotiateContextOffset), |
|
le16_to_cpu(rsp->NegotiateContextCount)); |
|
|
|
rsp->SecurityBufferOffset = cpu_to_le16(128); |
|
rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); |
|
ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) + |
|
sizeof(rsp->hdr.smb2_buf_length)) + |
|
le16_to_cpu(rsp->SecurityBufferOffset)); |
|
inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) - |
|
sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) + |
|
AUTH_GSS_LENGTH); |
|
rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; |
|
conn->use_spnego = true; |
|
|
|
if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO || |
|
server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) && |
|
req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE) |
|
conn->sign = true; |
|
else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) { |
|
server_conf.enforced_signing = true; |
|
rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; |
|
conn->sign = true; |
|
} |
|
|
|
conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode); |
|
ksmbd_conn_set_need_negotiate(work); |
|
|
|
err_out: |
|
if (rc < 0) |
|
smb2_set_err_rsp(work); |
|
|
|
return rc; |
|
} |
|
|
|
static int alloc_preauth_hash(struct ksmbd_session *sess, |
|
struct ksmbd_conn *conn) |
|
{ |
|
if (sess->Preauth_HashValue) |
|
return 0; |
|
|
|
sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue, |
|
PREAUTH_HASHVALUE_SIZE, GFP_KERNEL); |
|
if (!sess->Preauth_HashValue) |
|
return -ENOMEM; |
|
|
|
return 0; |
|
} |
|
|
|
static int generate_preauth_hash(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct ksmbd_session *sess = work->sess; |
|
u8 *preauth_hash; |
|
|
|
if (conn->dialect != SMB311_PROT_ID) |
|
return 0; |
|
|
|
if (conn->binding) { |
|
struct preauth_session *preauth_sess; |
|
|
|
preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); |
|
if (!preauth_sess) { |
|
preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id); |
|
if (!preauth_sess) |
|
return -ENOMEM; |
|
} |
|
|
|
preauth_hash = preauth_sess->Preauth_HashValue; |
|
} else { |
|
if (!sess->Preauth_HashValue) |
|
if (alloc_preauth_hash(sess, conn)) |
|
return -ENOMEM; |
|
preauth_hash = sess->Preauth_HashValue; |
|
} |
|
|
|
ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash); |
|
return 0; |
|
} |
|
|
|
static int decode_negotiation_token(struct ksmbd_work *work, |
|
struct negotiate_message *negblob) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_sess_setup_req *req; |
|
int sz; |
|
|
|
if (!conn->use_spnego) |
|
return -EINVAL; |
|
|
|
req = work->request_buf; |
|
sz = le16_to_cpu(req->SecurityBufferLength); |
|
|
|
if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) { |
|
if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) { |
|
conn->auth_mechs |= KSMBD_AUTH_NTLMSSP; |
|
conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP; |
|
conn->use_spnego = false; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static int ntlm_negotiate(struct ksmbd_work *work, |
|
struct negotiate_message *negblob) |
|
{ |
|
struct smb2_sess_setup_req *req = work->request_buf; |
|
struct smb2_sess_setup_rsp *rsp = work->response_buf; |
|
struct challenge_message *chgblob; |
|
unsigned char *spnego_blob = NULL; |
|
u16 spnego_blob_len; |
|
char *neg_blob; |
|
int sz, rc; |
|
|
|
ksmbd_debug(SMB, "negotiate phase\n"); |
|
sz = le16_to_cpu(req->SecurityBufferLength); |
|
rc = ksmbd_decode_ntlmssp_neg_blob(negblob, sz, work->sess); |
|
if (rc) |
|
return rc; |
|
|
|
sz = le16_to_cpu(rsp->SecurityBufferOffset); |
|
chgblob = |
|
(struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz); |
|
memset(chgblob, 0, sizeof(struct challenge_message)); |
|
|
|
if (!work->conn->use_spnego) { |
|
sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess); |
|
if (sz < 0) |
|
return -ENOMEM; |
|
|
|
rsp->SecurityBufferLength = cpu_to_le16(sz); |
|
return 0; |
|
} |
|
|
|
sz = sizeof(struct challenge_message); |
|
sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6; |
|
|
|
neg_blob = kzalloc(sz, GFP_KERNEL); |
|
if (!neg_blob) |
|
return -ENOMEM; |
|
|
|
chgblob = (struct challenge_message *)neg_blob; |
|
sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess); |
|
if (sz < 0) { |
|
rc = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len, |
|
neg_blob, sz); |
|
if (rc) { |
|
rc = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
sz = le16_to_cpu(rsp->SecurityBufferOffset); |
|
memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); |
|
rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); |
|
|
|
out: |
|
kfree(spnego_blob); |
|
kfree(neg_blob); |
|
return rc; |
|
} |
|
|
|
static struct authenticate_message *user_authblob(struct ksmbd_conn *conn, |
|
struct smb2_sess_setup_req *req) |
|
{ |
|
int sz; |
|
|
|
if (conn->use_spnego && conn->mechToken) |
|
return (struct authenticate_message *)conn->mechToken; |
|
|
|
sz = le16_to_cpu(req->SecurityBufferOffset); |
|
return (struct authenticate_message *)((char *)&req->hdr.ProtocolId |
|
+ sz); |
|
} |
|
|
|
static struct ksmbd_user *session_user(struct ksmbd_conn *conn, |
|
struct smb2_sess_setup_req *req) |
|
{ |
|
struct authenticate_message *authblob; |
|
struct ksmbd_user *user; |
|
char *name; |
|
int sz; |
|
|
|
authblob = user_authblob(conn, req); |
|
sz = le32_to_cpu(authblob->UserName.BufferOffset); |
|
name = smb_strndup_from_utf16((const char *)authblob + sz, |
|
le16_to_cpu(authblob->UserName.Length), |
|
true, |
|
conn->local_nls); |
|
if (IS_ERR(name)) { |
|
pr_err("cannot allocate memory\n"); |
|
return NULL; |
|
} |
|
|
|
ksmbd_debug(SMB, "session setup request for user %s\n", name); |
|
user = ksmbd_login_user(name); |
|
kfree(name); |
|
return user; |
|
} |
|
|
|
static int ntlm_authenticate(struct ksmbd_work *work) |
|
{ |
|
struct smb2_sess_setup_req *req = work->request_buf; |
|
struct smb2_sess_setup_rsp *rsp = work->response_buf; |
|
struct ksmbd_conn *conn = work->conn; |
|
struct ksmbd_session *sess = work->sess; |
|
struct channel *chann = NULL; |
|
struct ksmbd_user *user; |
|
u64 prev_id; |
|
int sz, rc; |
|
|
|
ksmbd_debug(SMB, "authenticate phase\n"); |
|
if (conn->use_spnego) { |
|
unsigned char *spnego_blob; |
|
u16 spnego_blob_len; |
|
|
|
rc = build_spnego_ntlmssp_auth_blob(&spnego_blob, |
|
&spnego_blob_len, |
|
0); |
|
if (rc) |
|
return -ENOMEM; |
|
|
|
sz = le16_to_cpu(rsp->SecurityBufferOffset); |
|
memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); |
|
rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); |
|
kfree(spnego_blob); |
|
inc_rfc1001_len(rsp, spnego_blob_len - 1); |
|
} |
|
|
|
user = session_user(conn, req); |
|
if (!user) { |
|
ksmbd_debug(SMB, "Unknown user name or an error\n"); |
|
return -EPERM; |
|
} |
|
|
|
/* Check for previous session */ |
|
prev_id = le64_to_cpu(req->PreviousSessionId); |
|
if (prev_id && prev_id != sess->id) |
|
destroy_previous_session(user, prev_id); |
|
|
|
if (sess->state == SMB2_SESSION_VALID) { |
|
/* |
|
* Reuse session if anonymous try to connect |
|
* on reauthetication. |
|
*/ |
|
if (ksmbd_anonymous_user(user)) { |
|
ksmbd_free_user(user); |
|
return 0; |
|
} |
|
ksmbd_free_user(sess->user); |
|
} |
|
|
|
sess->user = user; |
|
if (user_guest(sess->user)) { |
|
if (conn->sign) { |
|
ksmbd_debug(SMB, "Guest login not allowed when signing enabled\n"); |
|
return -EPERM; |
|
} |
|
|
|
rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE; |
|
} else { |
|
struct authenticate_message *authblob; |
|
|
|
authblob = user_authblob(conn, req); |
|
sz = le16_to_cpu(req->SecurityBufferLength); |
|
rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, sess); |
|
if (rc) { |
|
set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD); |
|
ksmbd_debug(SMB, "authentication failed\n"); |
|
return -EPERM; |
|
} |
|
|
|
/* |
|
* If session state is SMB2_SESSION_VALID, We can assume |
|
* that it is reauthentication. And the user/password |
|
* has been verified, so return it here. |
|
*/ |
|
if (sess->state == SMB2_SESSION_VALID) { |
|
if (conn->binding) |
|
goto binding_session; |
|
return 0; |
|
} |
|
|
|
if ((conn->sign || server_conf.enforced_signing) || |
|
(req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) |
|
sess->sign = true; |
|
|
|
if (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION && |
|
conn->ops->generate_encryptionkey && |
|
!(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { |
|
rc = conn->ops->generate_encryptionkey(sess); |
|
if (rc) { |
|
ksmbd_debug(SMB, |
|
"SMB3 encryption key generation failed\n"); |
|
return -EINVAL; |
|
} |
|
sess->enc = true; |
|
rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; |
|
/* |
|
* signing is disable if encryption is enable |
|
* on this session |
|
*/ |
|
sess->sign = false; |
|
} |
|
} |
|
|
|
binding_session: |
|
if (conn->dialect >= SMB30_PROT_ID) { |
|
chann = lookup_chann_list(sess, conn); |
|
if (!chann) { |
|
chann = kmalloc(sizeof(struct channel), GFP_KERNEL); |
|
if (!chann) |
|
return -ENOMEM; |
|
|
|
chann->conn = conn; |
|
INIT_LIST_HEAD(&chann->chann_list); |
|
list_add(&chann->chann_list, &sess->ksmbd_chann_list); |
|
} |
|
} |
|
|
|
if (conn->ops->generate_signingkey) { |
|
rc = conn->ops->generate_signingkey(sess, conn); |
|
if (rc) { |
|
ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (conn->dialect > SMB20_PROT_ID) { |
|
if (!ksmbd_conn_lookup_dialect(conn)) { |
|
pr_err("fail to verify the dialect\n"); |
|
return -ENOENT; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
#ifdef CONFIG_SMB_SERVER_KERBEROS5 |
|
static int krb5_authenticate(struct ksmbd_work *work) |
|
{ |
|
struct smb2_sess_setup_req *req = work->request_buf; |
|
struct smb2_sess_setup_rsp *rsp = work->response_buf; |
|
struct ksmbd_conn *conn = work->conn; |
|
struct ksmbd_session *sess = work->sess; |
|
char *in_blob, *out_blob; |
|
struct channel *chann = NULL; |
|
u64 prev_sess_id; |
|
int in_len, out_len; |
|
int retval; |
|
|
|
in_blob = (char *)&req->hdr.ProtocolId + |
|
le16_to_cpu(req->SecurityBufferOffset); |
|
in_len = le16_to_cpu(req->SecurityBufferLength); |
|
out_blob = (char *)&rsp->hdr.ProtocolId + |
|
le16_to_cpu(rsp->SecurityBufferOffset); |
|
out_len = work->response_sz - |
|
offsetof(struct smb2_hdr, smb2_buf_length) - |
|
le16_to_cpu(rsp->SecurityBufferOffset); |
|
|
|
/* Check previous session */ |
|
prev_sess_id = le64_to_cpu(req->PreviousSessionId); |
|
if (prev_sess_id && prev_sess_id != sess->id) |
|
destroy_previous_session(sess->user, prev_sess_id); |
|
|
|
if (sess->state == SMB2_SESSION_VALID) |
|
ksmbd_free_user(sess->user); |
|
|
|
retval = ksmbd_krb5_authenticate(sess, in_blob, in_len, |
|
out_blob, &out_len); |
|
if (retval) { |
|
ksmbd_debug(SMB, "krb5 authentication failed\n"); |
|
return -EINVAL; |
|
} |
|
rsp->SecurityBufferLength = cpu_to_le16(out_len); |
|
inc_rfc1001_len(rsp, out_len - 1); |
|
|
|
if ((conn->sign || server_conf.enforced_signing) || |
|
(req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) |
|
sess->sign = true; |
|
|
|
if ((conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) && |
|
conn->ops->generate_encryptionkey) { |
|
retval = conn->ops->generate_encryptionkey(sess); |
|
if (retval) { |
|
ksmbd_debug(SMB, |
|
"SMB3 encryption key generation failed\n"); |
|
return -EINVAL; |
|
} |
|
sess->enc = true; |
|
rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; |
|
sess->sign = false; |
|
} |
|
|
|
if (conn->dialect >= SMB30_PROT_ID) { |
|
chann = lookup_chann_list(sess, conn); |
|
if (!chann) { |
|
chann = kmalloc(sizeof(struct channel), GFP_KERNEL); |
|
if (!chann) |
|
return -ENOMEM; |
|
|
|
chann->conn = conn; |
|
INIT_LIST_HEAD(&chann->chann_list); |
|
list_add(&chann->chann_list, &sess->ksmbd_chann_list); |
|
} |
|
} |
|
|
|
if (conn->ops->generate_signingkey) { |
|
retval = conn->ops->generate_signingkey(sess, conn); |
|
if (retval) { |
|
ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
if (conn->dialect > SMB20_PROT_ID) { |
|
if (!ksmbd_conn_lookup_dialect(conn)) { |
|
pr_err("fail to verify the dialect\n"); |
|
return -ENOENT; |
|
} |
|
} |
|
return 0; |
|
} |
|
#else |
|
static int krb5_authenticate(struct ksmbd_work *work) |
|
{ |
|
return -EOPNOTSUPP; |
|
} |
|
#endif |
|
|
|
int smb2_sess_setup(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_sess_setup_req *req = work->request_buf; |
|
struct smb2_sess_setup_rsp *rsp = work->response_buf; |
|
struct ksmbd_session *sess; |
|
struct negotiate_message *negblob; |
|
int rc = 0; |
|
|
|
ksmbd_debug(SMB, "Received request for session setup\n"); |
|
|
|
rsp->StructureSize = cpu_to_le16(9); |
|
rsp->SessionFlags = 0; |
|
rsp->SecurityBufferOffset = cpu_to_le16(72); |
|
rsp->SecurityBufferLength = 0; |
|
inc_rfc1001_len(rsp, 9); |
|
|
|
if (!req->hdr.SessionId) { |
|
sess = ksmbd_smb2_session_create(); |
|
if (!sess) { |
|
rc = -ENOMEM; |
|
goto out_err; |
|
} |
|
rsp->hdr.SessionId = cpu_to_le64(sess->id); |
|
ksmbd_session_register(conn, sess); |
|
} else if (conn->dialect >= SMB30_PROT_ID && |
|
(server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && |
|
req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) { |
|
u64 sess_id = le64_to_cpu(req->hdr.SessionId); |
|
|
|
sess = ksmbd_session_lookup_slowpath(sess_id); |
|
if (!sess) { |
|
rc = -ENOENT; |
|
goto out_err; |
|
} |
|
|
|
if (conn->dialect != sess->conn->dialect) { |
|
rc = -EINVAL; |
|
goto out_err; |
|
} |
|
|
|
if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) { |
|
rc = -EINVAL; |
|
goto out_err; |
|
} |
|
|
|
if (strncmp(conn->ClientGUID, sess->conn->ClientGUID, |
|
SMB2_CLIENT_GUID_SIZE)) { |
|
rc = -ENOENT; |
|
goto out_err; |
|
} |
|
|
|
if (sess->state == SMB2_SESSION_IN_PROGRESS) { |
|
rc = -EACCES; |
|
goto out_err; |
|
} |
|
|
|
if (sess->state == SMB2_SESSION_EXPIRED) { |
|
rc = -EFAULT; |
|
goto out_err; |
|
} |
|
|
|
if (ksmbd_session_lookup(conn, sess_id)) { |
|
rc = -EACCES; |
|
goto out_err; |
|
} |
|
|
|
conn->binding = true; |
|
} else if ((conn->dialect < SMB30_PROT_ID || |
|
server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && |
|
(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { |
|
sess = NULL; |
|
rc = -EACCES; |
|
goto out_err; |
|
} else { |
|
sess = ksmbd_session_lookup(conn, |
|
le64_to_cpu(req->hdr.SessionId)); |
|
if (!sess) { |
|
rc = -ENOENT; |
|
goto out_err; |
|
} |
|
} |
|
work->sess = sess; |
|
|
|
if (sess->state == SMB2_SESSION_EXPIRED) |
|
sess->state = SMB2_SESSION_IN_PROGRESS; |
|
|
|
negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId + |
|
le16_to_cpu(req->SecurityBufferOffset)); |
|
|
|
if (decode_negotiation_token(work, negblob) == 0) { |
|
if (conn->mechToken) |
|
negblob = (struct negotiate_message *)conn->mechToken; |
|
} |
|
|
|
if (server_conf.auth_mechs & conn->auth_mechs) { |
|
rc = generate_preauth_hash(work); |
|
if (rc) |
|
goto out_err; |
|
|
|
if (conn->preferred_auth_mech & |
|
(KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) { |
|
rc = krb5_authenticate(work); |
|
if (rc) { |
|
rc = -EINVAL; |
|
goto out_err; |
|
} |
|
|
|
ksmbd_conn_set_good(work); |
|
sess->state = SMB2_SESSION_VALID; |
|
kfree(sess->Preauth_HashValue); |
|
sess->Preauth_HashValue = NULL; |
|
} else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) { |
|
if (negblob->MessageType == NtLmNegotiate) { |
|
rc = ntlm_negotiate(work, negblob); |
|
if (rc) |
|
goto out_err; |
|
rsp->hdr.Status = |
|
STATUS_MORE_PROCESSING_REQUIRED; |
|
/* |
|
* Note: here total size -1 is done as an |
|
* adjustment for 0 size blob |
|
*/ |
|
inc_rfc1001_len(rsp, le16_to_cpu(rsp->SecurityBufferLength) - 1); |
|
|
|
} else if (negblob->MessageType == NtLmAuthenticate) { |
|
rc = ntlm_authenticate(work); |
|
if (rc) |
|
goto out_err; |
|
|
|
ksmbd_conn_set_good(work); |
|
sess->state = SMB2_SESSION_VALID; |
|
if (conn->binding) { |
|
struct preauth_session *preauth_sess; |
|
|
|
preauth_sess = |
|
ksmbd_preauth_session_lookup(conn, sess->id); |
|
if (preauth_sess) { |
|
list_del(&preauth_sess->preauth_entry); |
|
kfree(preauth_sess); |
|
} |
|
} |
|
kfree(sess->Preauth_HashValue); |
|
sess->Preauth_HashValue = NULL; |
|
} |
|
} else { |
|
/* TODO: need one more negotiation */ |
|
pr_err("Not support the preferred authentication\n"); |
|
rc = -EINVAL; |
|
} |
|
} else { |
|
pr_err("Not support authentication\n"); |
|
rc = -EINVAL; |
|
} |
|
|
|
out_err: |
|
if (rc == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else if (rc == -ENOENT) |
|
rsp->hdr.Status = STATUS_USER_SESSION_DELETED; |
|
else if (rc == -EACCES) |
|
rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; |
|
else if (rc == -EFAULT) |
|
rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED; |
|
else if (rc == -ENOMEM) |
|
rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; |
|
else if (rc) |
|
rsp->hdr.Status = STATUS_LOGON_FAILURE; |
|
|
|
if (conn->use_spnego && conn->mechToken) { |
|
kfree(conn->mechToken); |
|
conn->mechToken = NULL; |
|
} |
|
|
|
if (rc < 0 && sess) { |
|
ksmbd_session_destroy(sess); |
|
work->sess = NULL; |
|
} |
|
|
|
return rc; |
|
} |
|
|
|
/** |
|
* smb2_tree_connect() - handler for smb2 tree connect command |
|
* @work: smb work containing smb request buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_tree_connect(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_tree_connect_req *req = work->request_buf; |
|
struct smb2_tree_connect_rsp *rsp = work->response_buf; |
|
struct ksmbd_session *sess = work->sess; |
|
char *treename = NULL, *name = NULL; |
|
struct ksmbd_tree_conn_status status; |
|
struct ksmbd_share_config *share; |
|
int rc = -EINVAL; |
|
|
|
treename = smb_strndup_from_utf16(req->Buffer, |
|
le16_to_cpu(req->PathLength), true, |
|
conn->local_nls); |
|
if (IS_ERR(treename)) { |
|
pr_err("treename is NULL\n"); |
|
status.ret = KSMBD_TREE_CONN_STATUS_ERROR; |
|
goto out_err1; |
|
} |
|
|
|
name = ksmbd_extract_sharename(treename); |
|
if (IS_ERR(name)) { |
|
status.ret = KSMBD_TREE_CONN_STATUS_ERROR; |
|
goto out_err1; |
|
} |
|
|
|
ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n", |
|
name, treename); |
|
|
|
status = ksmbd_tree_conn_connect(sess, name); |
|
if (status.ret == KSMBD_TREE_CONN_STATUS_OK) |
|
rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id); |
|
else |
|
goto out_err1; |
|
|
|
share = status.tree_conn->share_conf; |
|
if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { |
|
ksmbd_debug(SMB, "IPC share path request\n"); |
|
rsp->ShareType = SMB2_SHARE_TYPE_PIPE; |
|
rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | |
|
FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE | |
|
FILE_DELETE_LE | FILE_READ_CONTROL_LE | |
|
FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | |
|
FILE_SYNCHRONIZE_LE; |
|
} else { |
|
rsp->ShareType = SMB2_SHARE_TYPE_DISK; |
|
rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | |
|
FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE; |
|
if (test_tree_conn_flag(status.tree_conn, |
|
KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
rsp->MaximalAccess |= FILE_WRITE_DATA_LE | |
|
FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE | |
|
FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE | |
|
FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE | |
|
FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | |
|
FILE_SYNCHRONIZE_LE; |
|
} |
|
} |
|
|
|
status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess); |
|
if (conn->posix_ext_supported) |
|
status.tree_conn->posix_extensions = true; |
|
|
|
out_err1: |
|
rsp->StructureSize = cpu_to_le16(16); |
|
rsp->Capabilities = 0; |
|
rsp->Reserved = 0; |
|
/* default manual caching */ |
|
rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; |
|
inc_rfc1001_len(rsp, 16); |
|
|
|
if (!IS_ERR(treename)) |
|
kfree(treename); |
|
if (!IS_ERR(name)) |
|
kfree(name); |
|
|
|
switch (status.ret) { |
|
case KSMBD_TREE_CONN_STATUS_OK: |
|
rsp->hdr.Status = STATUS_SUCCESS; |
|
rc = 0; |
|
break; |
|
case KSMBD_TREE_CONN_STATUS_NO_SHARE: |
|
rsp->hdr.Status = STATUS_BAD_NETWORK_PATH; |
|
break; |
|
case -ENOMEM: |
|
case KSMBD_TREE_CONN_STATUS_NOMEM: |
|
rsp->hdr.Status = STATUS_NO_MEMORY; |
|
break; |
|
case KSMBD_TREE_CONN_STATUS_ERROR: |
|
case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS: |
|
case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS: |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
break; |
|
case -EINVAL: |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
break; |
|
default: |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
} |
|
|
|
return rc; |
|
} |
|
|
|
/** |
|
* smb2_create_open_flags() - convert smb open flags to unix open flags |
|
* @file_present: is file already present |
|
* @access: file access flags |
|
* @disposition: file disposition flags |
|
* @may_flags: set with MAY_ flags |
|
* |
|
* Return: file open flags |
|
*/ |
|
static int smb2_create_open_flags(bool file_present, __le32 access, |
|
__le32 disposition, |
|
int *may_flags) |
|
{ |
|
int oflags = O_NONBLOCK | O_LARGEFILE; |
|
|
|
if (access & FILE_READ_DESIRED_ACCESS_LE && |
|
access & FILE_WRITE_DESIRE_ACCESS_LE) { |
|
oflags |= O_RDWR; |
|
*may_flags = MAY_OPEN | MAY_READ | MAY_WRITE; |
|
} else if (access & FILE_WRITE_DESIRE_ACCESS_LE) { |
|
oflags |= O_WRONLY; |
|
*may_flags = MAY_OPEN | MAY_WRITE; |
|
} else { |
|
oflags |= O_RDONLY; |
|
*may_flags = MAY_OPEN | MAY_READ; |
|
} |
|
|
|
if (access == FILE_READ_ATTRIBUTES_LE) |
|
oflags |= O_PATH; |
|
|
|
if (file_present) { |
|
switch (disposition & FILE_CREATE_MASK_LE) { |
|
case FILE_OPEN_LE: |
|
case FILE_CREATE_LE: |
|
break; |
|
case FILE_SUPERSEDE_LE: |
|
case FILE_OVERWRITE_LE: |
|
case FILE_OVERWRITE_IF_LE: |
|
oflags |= O_TRUNC; |
|
break; |
|
default: |
|
break; |
|
} |
|
} else { |
|
switch (disposition & FILE_CREATE_MASK_LE) { |
|
case FILE_SUPERSEDE_LE: |
|
case FILE_CREATE_LE: |
|
case FILE_OPEN_IF_LE: |
|
case FILE_OVERWRITE_IF_LE: |
|
oflags |= O_CREAT; |
|
break; |
|
case FILE_OPEN_LE: |
|
case FILE_OVERWRITE_LE: |
|
oflags &= ~O_CREAT; |
|
break; |
|
default: |
|
break; |
|
} |
|
} |
|
|
|
return oflags; |
|
} |
|
|
|
/** |
|
* smb2_tree_disconnect() - handler for smb tree connect request |
|
* @work: smb work containing request buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
int smb2_tree_disconnect(struct ksmbd_work *work) |
|
{ |
|
struct smb2_tree_disconnect_rsp *rsp = work->response_buf; |
|
struct ksmbd_session *sess = work->sess; |
|
struct ksmbd_tree_connect *tcon = work->tcon; |
|
|
|
rsp->StructureSize = cpu_to_le16(4); |
|
inc_rfc1001_len(rsp, 4); |
|
|
|
ksmbd_debug(SMB, "request\n"); |
|
|
|
if (!tcon) { |
|
struct smb2_tree_disconnect_req *req = work->request_buf; |
|
|
|
ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); |
|
rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; |
|
smb2_set_err_rsp(work); |
|
return 0; |
|
} |
|
|
|
ksmbd_close_tree_conn_fds(work); |
|
ksmbd_tree_conn_disconnect(sess, tcon); |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_session_logoff() - handler for session log off request |
|
* @work: smb work containing request buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
int smb2_session_logoff(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_logoff_rsp *rsp = work->response_buf; |
|
struct ksmbd_session *sess = work->sess; |
|
|
|
rsp->StructureSize = cpu_to_le16(4); |
|
inc_rfc1001_len(rsp, 4); |
|
|
|
ksmbd_debug(SMB, "request\n"); |
|
|
|
/* Got a valid session, set connection state */ |
|
WARN_ON(sess->conn != conn); |
|
|
|
/* setting CifsExiting here may race with start_tcp_sess */ |
|
ksmbd_conn_set_need_reconnect(work); |
|
ksmbd_close_session_fds(work); |
|
ksmbd_conn_wait_idle(conn); |
|
|
|
if (ksmbd_tree_conn_session_logoff(sess)) { |
|
struct smb2_logoff_req *req = work->request_buf; |
|
|
|
ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); |
|
rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; |
|
smb2_set_err_rsp(work); |
|
return 0; |
|
} |
|
|
|
ksmbd_destroy_file_table(&sess->file_table); |
|
sess->state = SMB2_SESSION_EXPIRED; |
|
|
|
ksmbd_free_user(sess->user); |
|
sess->user = NULL; |
|
|
|
/* let start_tcp_sess free connection info now */ |
|
ksmbd_conn_set_need_negotiate(work); |
|
return 0; |
|
} |
|
|
|
/** |
|
* create_smb2_pipe() - create IPC pipe |
|
* @work: smb work containing request buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
static noinline int create_smb2_pipe(struct ksmbd_work *work) |
|
{ |
|
struct smb2_create_rsp *rsp = work->response_buf; |
|
struct smb2_create_req *req = work->request_buf; |
|
int id; |
|
int err; |
|
char *name; |
|
|
|
name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength), |
|
1, work->conn->local_nls); |
|
if (IS_ERR(name)) { |
|
rsp->hdr.Status = STATUS_NO_MEMORY; |
|
err = PTR_ERR(name); |
|
goto out; |
|
} |
|
|
|
id = ksmbd_session_rpc_open(work->sess, name); |
|
if (id < 0) { |
|
pr_err("Unable to open RPC pipe: %d\n", id); |
|
err = id; |
|
goto out; |
|
} |
|
|
|
rsp->hdr.Status = STATUS_SUCCESS; |
|
rsp->StructureSize = cpu_to_le16(89); |
|
rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE; |
|
rsp->Reserved = 0; |
|
rsp->CreateAction = cpu_to_le32(FILE_OPENED); |
|
|
|
rsp->CreationTime = cpu_to_le64(0); |
|
rsp->LastAccessTime = cpu_to_le64(0); |
|
rsp->ChangeTime = cpu_to_le64(0); |
|
rsp->AllocationSize = cpu_to_le64(0); |
|
rsp->EndofFile = cpu_to_le64(0); |
|
rsp->FileAttributes = ATTR_NORMAL_LE; |
|
rsp->Reserved2 = 0; |
|
rsp->VolatileFileId = cpu_to_le64(id); |
|
rsp->PersistentFileId = 0; |
|
rsp->CreateContextsOffset = 0; |
|
rsp->CreateContextsLength = 0; |
|
|
|
inc_rfc1001_len(rsp, 88); /* StructureSize - 1*/ |
|
kfree(name); |
|
return 0; |
|
|
|
out: |
|
switch (err) { |
|
case -EINVAL: |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
break; |
|
case -ENOSPC: |
|
case -ENOMEM: |
|
rsp->hdr.Status = STATUS_NO_MEMORY; |
|
break; |
|
} |
|
|
|
if (!IS_ERR(name)) |
|
kfree(name); |
|
|
|
smb2_set_err_rsp(work); |
|
return err; |
|
} |
|
|
|
/** |
|
* smb2_set_ea() - handler for setting extended attributes using set |
|
* info command |
|
* @eabuf: set info command buffer |
|
* @path: dentry path for get ea |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
static int smb2_set_ea(struct smb2_ea_info *eabuf, struct path *path) |
|
{ |
|
struct user_namespace *user_ns = mnt_user_ns(path->mnt); |
|
char *attr_name = NULL, *value; |
|
int rc = 0; |
|
int next = 0; |
|
|
|
attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL); |
|
if (!attr_name) |
|
return -ENOMEM; |
|
|
|
do { |
|
if (!eabuf->EaNameLength) |
|
goto next; |
|
|
|
ksmbd_debug(SMB, |
|
"name : <%s>, name_len : %u, value_len : %u, next : %u\n", |
|
eabuf->name, eabuf->EaNameLength, |
|
le16_to_cpu(eabuf->EaValueLength), |
|
le32_to_cpu(eabuf->NextEntryOffset)); |
|
|
|
if (eabuf->EaNameLength > |
|
(XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) { |
|
rc = -EINVAL; |
|
break; |
|
} |
|
|
|
memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); |
|
memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name, |
|
eabuf->EaNameLength); |
|
attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0'; |
|
value = (char *)&eabuf->name + eabuf->EaNameLength + 1; |
|
|
|
if (!eabuf->EaValueLength) { |
|
rc = ksmbd_vfs_casexattr_len(user_ns, |
|
path->dentry, |
|
attr_name, |
|
XATTR_USER_PREFIX_LEN + |
|
eabuf->EaNameLength); |
|
|
|
/* delete the EA only when it exits */ |
|
if (rc > 0) { |
|
rc = ksmbd_vfs_remove_xattr(user_ns, |
|
path->dentry, |
|
attr_name); |
|
|
|
if (rc < 0) { |
|
ksmbd_debug(SMB, |
|
"remove xattr failed(%d)\n", |
|
rc); |
|
break; |
|
} |
|
} |
|
|
|
/* if the EA doesn't exist, just do nothing. */ |
|
rc = 0; |
|
} else { |
|
rc = ksmbd_vfs_setxattr(user_ns, |
|
path->dentry, attr_name, value, |
|
le16_to_cpu(eabuf->EaValueLength), 0); |
|
if (rc < 0) { |
|
ksmbd_debug(SMB, |
|
"ksmbd_vfs_setxattr is failed(%d)\n", |
|
rc); |
|
break; |
|
} |
|
} |
|
|
|
next: |
|
next = le32_to_cpu(eabuf->NextEntryOffset); |
|
eabuf = (struct smb2_ea_info *)((char *)eabuf + next); |
|
} while (next != 0); |
|
|
|
kfree(attr_name); |
|
return rc; |
|
} |
|
|
|
static noinline int smb2_set_stream_name_xattr(struct path *path, |
|
struct ksmbd_file *fp, |
|
char *stream_name, int s_type) |
|
{ |
|
struct user_namespace *user_ns = mnt_user_ns(path->mnt); |
|
size_t xattr_stream_size; |
|
char *xattr_stream_name; |
|
int rc; |
|
|
|
rc = ksmbd_vfs_xattr_stream_name(stream_name, |
|
&xattr_stream_name, |
|
&xattr_stream_size, |
|
s_type); |
|
if (rc) |
|
return rc; |
|
|
|
fp->stream.name = xattr_stream_name; |
|
fp->stream.size = xattr_stream_size; |
|
|
|
/* Check if there is stream prefix in xattr space */ |
|
rc = ksmbd_vfs_casexattr_len(user_ns, |
|
path->dentry, |
|
xattr_stream_name, |
|
xattr_stream_size); |
|
if (rc >= 0) |
|
return 0; |
|
|
|
if (fp->cdoption == FILE_OPEN_LE) { |
|
ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc); |
|
return -EBADF; |
|
} |
|
|
|
rc = ksmbd_vfs_setxattr(user_ns, path->dentry, |
|
xattr_stream_name, NULL, 0, 0); |
|
if (rc < 0) |
|
pr_err("Failed to store XATTR stream name :%d\n", rc); |
|
return 0; |
|
} |
|
|
|
static int smb2_remove_smb_xattrs(struct path *path) |
|
{ |
|
struct user_namespace *user_ns = mnt_user_ns(path->mnt); |
|
char *name, *xattr_list = NULL; |
|
ssize_t xattr_list_len; |
|
int err = 0; |
|
|
|
xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); |
|
if (xattr_list_len < 0) { |
|
goto out; |
|
} else if (!xattr_list_len) { |
|
ksmbd_debug(SMB, "empty xattr in the file\n"); |
|
goto out; |
|
} |
|
|
|
for (name = xattr_list; name - xattr_list < xattr_list_len; |
|
name += strlen(name) + 1) { |
|
ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name)); |
|
|
|
if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) && |
|
strncmp(&name[XATTR_USER_PREFIX_LEN], DOS_ATTRIBUTE_PREFIX, |
|
DOS_ATTRIBUTE_PREFIX_LEN) && |
|
strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, STREAM_PREFIX_LEN)) |
|
continue; |
|
|
|
err = ksmbd_vfs_remove_xattr(user_ns, path->dentry, name); |
|
if (err) |
|
ksmbd_debug(SMB, "remove xattr failed : %s\n", name); |
|
} |
|
out: |
|
kvfree(xattr_list); |
|
return err; |
|
} |
|
|
|
static int smb2_create_truncate(struct path *path) |
|
{ |
|
int rc = vfs_truncate(path, 0); |
|
|
|
if (rc) { |
|
pr_err("vfs_truncate failed, rc %d\n", rc); |
|
return rc; |
|
} |
|
|
|
rc = smb2_remove_smb_xattrs(path); |
|
if (rc == -EOPNOTSUPP) |
|
rc = 0; |
|
if (rc) |
|
ksmbd_debug(SMB, |
|
"ksmbd_truncate_stream_name_xattr failed, rc %d\n", |
|
rc); |
|
return rc; |
|
} |
|
|
|
static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, struct path *path, |
|
struct ksmbd_file *fp) |
|
{ |
|
struct xattr_dos_attrib da = {0}; |
|
int rc; |
|
|
|
if (!test_share_config_flag(tcon->share_conf, |
|
KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) |
|
return; |
|
|
|
da.version = 4; |
|
da.attr = le32_to_cpu(fp->f_ci->m_fattr); |
|
da.itime = da.create_time = fp->create_time; |
|
da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | |
|
XATTR_DOSINFO_ITIME; |
|
|
|
rc = ksmbd_vfs_set_dos_attrib_xattr(mnt_user_ns(path->mnt), |
|
path->dentry, &da); |
|
if (rc) |
|
ksmbd_debug(SMB, "failed to store file attribute into xattr\n"); |
|
} |
|
|
|
static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon, |
|
struct path *path, struct ksmbd_file *fp) |
|
{ |
|
struct xattr_dos_attrib da; |
|
int rc; |
|
|
|
fp->f_ci->m_fattr &= ~(ATTR_HIDDEN_LE | ATTR_SYSTEM_LE); |
|
|
|
/* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */ |
|
if (!test_share_config_flag(tcon->share_conf, |
|
KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) |
|
return; |
|
|
|
rc = ksmbd_vfs_get_dos_attrib_xattr(mnt_user_ns(path->mnt), |
|
path->dentry, &da); |
|
if (rc > 0) { |
|
fp->f_ci->m_fattr = cpu_to_le32(da.attr); |
|
fp->create_time = da.create_time; |
|
fp->itime = da.itime; |
|
} |
|
} |
|
|
|
static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name, |
|
int open_flags, umode_t posix_mode, bool is_dir) |
|
{ |
|
struct ksmbd_tree_connect *tcon = work->tcon; |
|
struct ksmbd_share_config *share = tcon->share_conf; |
|
umode_t mode; |
|
int rc; |
|
|
|
if (!(open_flags & O_CREAT)) |
|
return -EBADF; |
|
|
|
ksmbd_debug(SMB, "file does not exist, so creating\n"); |
|
if (is_dir == true) { |
|
ksmbd_debug(SMB, "creating directory\n"); |
|
|
|
mode = share_config_directory_mode(share, posix_mode); |
|
rc = ksmbd_vfs_mkdir(work, name, mode); |
|
if (rc) |
|
return rc; |
|
} else { |
|
ksmbd_debug(SMB, "creating regular file\n"); |
|
|
|
mode = share_config_create_mode(share, posix_mode); |
|
rc = ksmbd_vfs_create(work, name, mode); |
|
if (rc) |
|
return rc; |
|
} |
|
|
|
rc = ksmbd_vfs_kern_path(work, name, 0, path, 0); |
|
if (rc) { |
|
pr_err("cannot get linux path (%s), err = %d\n", |
|
name, rc); |
|
return rc; |
|
} |
|
return 0; |
|
} |
|
|
|
static int smb2_create_sd_buffer(struct ksmbd_work *work, |
|
struct smb2_create_req *req, |
|
struct path *path) |
|
{ |
|
struct create_context *context; |
|
struct create_sd_buf_req *sd_buf; |
|
|
|
if (!req->CreateContextsOffset) |
|
return -ENOENT; |
|
|
|
/* Parse SD BUFFER create contexts */ |
|
context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER); |
|
if (!context) |
|
return -ENOENT; |
|
else if (IS_ERR(context)) |
|
return PTR_ERR(context); |
|
|
|
ksmbd_debug(SMB, |
|
"Set ACLs using SMB2_CREATE_SD_BUFFER context\n"); |
|
sd_buf = (struct create_sd_buf_req *)context; |
|
return set_info_sec(work->conn, work->tcon, path, &sd_buf->ntsd, |
|
le32_to_cpu(sd_buf->ccontext.DataLength), true); |
|
} |
|
|
|
static void ksmbd_acls_fattr(struct smb_fattr *fattr, |
|
struct user_namespace *mnt_userns, |
|
struct inode *inode) |
|
{ |
|
fattr->cf_uid = i_uid_into_mnt(mnt_userns, inode); |
|
fattr->cf_gid = i_gid_into_mnt(mnt_userns, inode); |
|
fattr->cf_mode = inode->i_mode; |
|
fattr->cf_acls = NULL; |
|
fattr->cf_dacls = NULL; |
|
|
|
if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) { |
|
fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS); |
|
if (S_ISDIR(inode->i_mode)) |
|
fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT); |
|
} |
|
} |
|
|
|
/** |
|
* smb2_open() - handler for smb file open request |
|
* @work: smb work containing request buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_open(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct ksmbd_session *sess = work->sess; |
|
struct ksmbd_tree_connect *tcon = work->tcon; |
|
struct smb2_create_req *req; |
|
struct smb2_create_rsp *rsp, *rsp_org; |
|
struct path path; |
|
struct ksmbd_share_config *share = tcon->share_conf; |
|
struct ksmbd_file *fp = NULL; |
|
struct file *filp = NULL; |
|
struct user_namespace *user_ns = NULL; |
|
struct kstat stat; |
|
struct create_context *context; |
|
struct lease_ctx_info *lc = NULL; |
|
struct create_ea_buf_req *ea_buf = NULL; |
|
struct oplock_info *opinfo; |
|
__le32 *next_ptr = NULL; |
|
int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0; |
|
int rc = 0; |
|
int contxt_cnt = 0, query_disk_id = 0; |
|
int maximal_access_ctxt = 0, posix_ctxt = 0; |
|
int s_type = 0; |
|
int next_off = 0; |
|
char *name = NULL; |
|
char *stream_name = NULL; |
|
bool file_present = false, created = false, already_permitted = false; |
|
int share_ret, need_truncate = 0; |
|
u64 time; |
|
umode_t posix_mode = 0; |
|
__le32 daccess, maximal_access = 0; |
|
|
|
rsp_org = work->response_buf; |
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off && |
|
(req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { |
|
ksmbd_debug(SMB, "invalid flag in chained command\n"); |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
smb2_set_err_rsp(work); |
|
return -EINVAL; |
|
} |
|
|
|
if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { |
|
ksmbd_debug(SMB, "IPC pipe create request\n"); |
|
return create_smb2_pipe(work); |
|
} |
|
|
|
if (req->NameLength) { |
|
if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) && |
|
*(char *)req->Buffer == '\\') { |
|
pr_err("not allow directory name included leading slash\n"); |
|
rc = -EINVAL; |
|
goto err_out1; |
|
} |
|
|
|
name = smb2_get_name(share, |
|
req->Buffer, |
|
le16_to_cpu(req->NameLength), |
|
work->conn->local_nls); |
|
if (IS_ERR(name)) { |
|
rc = PTR_ERR(name); |
|
if (rc != -ENOMEM) |
|
rc = -ENOENT; |
|
name = NULL; |
|
goto err_out1; |
|
} |
|
|
|
ksmbd_debug(SMB, "converted name = %s\n", name); |
|
if (strchr(name, ':')) { |
|
if (!test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_STREAMS)) { |
|
rc = -EBADF; |
|
goto err_out1; |
|
} |
|
rc = parse_stream_name(name, &stream_name, &s_type); |
|
if (rc < 0) |
|
goto err_out1; |
|
} |
|
|
|
rc = ksmbd_validate_filename(name); |
|
if (rc < 0) |
|
goto err_out1; |
|
|
|
if (ksmbd_share_veto_filename(share, name)) { |
|
rc = -ENOENT; |
|
ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n", |
|
name); |
|
goto err_out1; |
|
} |
|
} else { |
|
name = kstrdup("", GFP_KERNEL); |
|
if (!name) { |
|
rc = -ENOMEM; |
|
goto err_out1; |
|
} |
|
} |
|
|
|
req_op_level = req->RequestedOplockLevel; |
|
if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) |
|
lc = parse_lease_state(req); |
|
|
|
if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE_LE)) { |
|
pr_err("Invalid impersonationlevel : 0x%x\n", |
|
le32_to_cpu(req->ImpersonationLevel)); |
|
rc = -EIO; |
|
rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL; |
|
goto err_out1; |
|
} |
|
|
|
if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK)) { |
|
pr_err("Invalid create options : 0x%x\n", |
|
le32_to_cpu(req->CreateOptions)); |
|
rc = -EINVAL; |
|
goto err_out1; |
|
} else { |
|
if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE && |
|
req->CreateOptions & FILE_RANDOM_ACCESS_LE) |
|
req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE); |
|
|
|
if (req->CreateOptions & |
|
(FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION | |
|
FILE_RESERVE_OPFILTER_LE)) { |
|
rc = -EOPNOTSUPP; |
|
goto err_out1; |
|
} |
|
|
|
if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { |
|
if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) { |
|
rc = -EINVAL; |
|
goto err_out1; |
|
} else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) { |
|
req->CreateOptions = ~(FILE_NO_COMPRESSION_LE); |
|
} |
|
} |
|
} |
|
|
|
if (le32_to_cpu(req->CreateDisposition) > |
|
le32_to_cpu(FILE_OVERWRITE_IF_LE)) { |
|
pr_err("Invalid create disposition : 0x%x\n", |
|
le32_to_cpu(req->CreateDisposition)); |
|
rc = -EINVAL; |
|
goto err_out1; |
|
} |
|
|
|
if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) { |
|
pr_err("Invalid desired access : 0x%x\n", |
|
le32_to_cpu(req->DesiredAccess)); |
|
rc = -EACCES; |
|
goto err_out1; |
|
} |
|
|
|
if (req->FileAttributes && !(req->FileAttributes & ATTR_MASK_LE)) { |
|
pr_err("Invalid file attribute : 0x%x\n", |
|
le32_to_cpu(req->FileAttributes)); |
|
rc = -EINVAL; |
|
goto err_out1; |
|
} |
|
|
|
if (req->CreateContextsOffset) { |
|
/* Parse non-durable handle create contexts */ |
|
context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER); |
|
if (IS_ERR(context)) { |
|
rc = PTR_ERR(context); |
|
goto err_out1; |
|
} else if (context) { |
|
ea_buf = (struct create_ea_buf_req *)context; |
|
if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) { |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
rc = -EACCES; |
|
goto err_out1; |
|
} |
|
} |
|
|
|
context = smb2_find_context_vals(req, |
|
SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST); |
|
if (IS_ERR(context)) { |
|
rc = PTR_ERR(context); |
|
goto err_out1; |
|
} else if (context) { |
|
ksmbd_debug(SMB, |
|
"get query maximal access context\n"); |
|
maximal_access_ctxt = 1; |
|
} |
|
|
|
context = smb2_find_context_vals(req, |
|
SMB2_CREATE_TIMEWARP_REQUEST); |
|
if (IS_ERR(context)) { |
|
rc = PTR_ERR(context); |
|
goto err_out1; |
|
} else if (context) { |
|
ksmbd_debug(SMB, "get timewarp context\n"); |
|
rc = -EBADF; |
|
goto err_out1; |
|
} |
|
|
|
if (tcon->posix_extensions) { |
|
context = smb2_find_context_vals(req, |
|
SMB2_CREATE_TAG_POSIX); |
|
if (IS_ERR(context)) { |
|
rc = PTR_ERR(context); |
|
goto err_out1; |
|
} else if (context) { |
|
struct create_posix *posix = |
|
(struct create_posix *)context; |
|
ksmbd_debug(SMB, "get posix context\n"); |
|
|
|
posix_mode = le32_to_cpu(posix->Mode); |
|
posix_ctxt = 1; |
|
} |
|
} |
|
} |
|
|
|
if (ksmbd_override_fsids(work)) { |
|
rc = -ENOMEM; |
|
goto err_out1; |
|
} |
|
|
|
rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1); |
|
if (!rc) { |
|
if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) { |
|
/* |
|
* If file exists with under flags, return access |
|
* denied error. |
|
*/ |
|
if (req->CreateDisposition == FILE_OVERWRITE_IF_LE || |
|
req->CreateDisposition == FILE_OPEN_IF_LE) { |
|
rc = -EACCES; |
|
path_put(&path); |
|
goto err_out; |
|
} |
|
|
|
if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
ksmbd_debug(SMB, |
|
"User does not have write permission\n"); |
|
rc = -EACCES; |
|
path_put(&path); |
|
goto err_out; |
|
} |
|
} else if (d_is_symlink(path.dentry)) { |
|
rc = -EACCES; |
|
path_put(&path); |
|
goto err_out; |
|
} |
|
} |
|
|
|
if (rc) { |
|
if (rc != -ENOENT) |
|
goto err_out; |
|
ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n", |
|
name, rc); |
|
rc = 0; |
|
} else { |
|
file_present = true; |
|
user_ns = mnt_user_ns(path.mnt); |
|
generic_fillattr(user_ns, d_inode(path.dentry), &stat); |
|
} |
|
if (stream_name) { |
|
if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { |
|
if (s_type == DATA_STREAM) { |
|
rc = -EIO; |
|
rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
|
} |
|
} else { |
|
if (S_ISDIR(stat.mode) && s_type == DATA_STREAM) { |
|
rc = -EIO; |
|
rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; |
|
} |
|
} |
|
|
|
if (req->CreateOptions & FILE_DIRECTORY_FILE_LE && |
|
req->FileAttributes & ATTR_NORMAL_LE) { |
|
rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
|
rc = -EIO; |
|
} |
|
|
|
if (rc < 0) |
|
goto err_out; |
|
} |
|
|
|
if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE && |
|
S_ISDIR(stat.mode) && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { |
|
ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n", |
|
name, req->CreateOptions); |
|
rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; |
|
rc = -EIO; |
|
goto err_out; |
|
} |
|
|
|
if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) && |
|
!(req->CreateDisposition == FILE_CREATE_LE) && |
|
!S_ISDIR(stat.mode)) { |
|
rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
|
rc = -EIO; |
|
goto err_out; |
|
} |
|
|
|
if (!stream_name && file_present && |
|
req->CreateDisposition == FILE_CREATE_LE) { |
|
rc = -EEXIST; |
|
goto err_out; |
|
} |
|
|
|
daccess = smb_map_generic_desired_access(req->DesiredAccess); |
|
|
|
if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { |
|
rc = smb_check_perm_dacl(conn, &path, &daccess, |
|
sess->user->uid); |
|
if (rc) |
|
goto err_out; |
|
} |
|
|
|
if (daccess & FILE_MAXIMAL_ACCESS_LE) { |
|
if (!file_present) { |
|
daccess = cpu_to_le32(GENERIC_ALL_FLAGS); |
|
} else { |
|
rc = ksmbd_vfs_query_maximal_access(user_ns, |
|
path.dentry, |
|
&daccess); |
|
if (rc) |
|
goto err_out; |
|
already_permitted = true; |
|
} |
|
maximal_access = daccess; |
|
} |
|
|
|
open_flags = smb2_create_open_flags(file_present, daccess, |
|
req->CreateDisposition, |
|
&may_flags); |
|
|
|
if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
if (open_flags & O_CREAT) { |
|
ksmbd_debug(SMB, |
|
"User does not have write permission\n"); |
|
rc = -EACCES; |
|
goto err_out; |
|
} |
|
} |
|
|
|
/*create file if not present */ |
|
if (!file_present) { |
|
rc = smb2_creat(work, &path, name, open_flags, posix_mode, |
|
req->CreateOptions & FILE_DIRECTORY_FILE_LE); |
|
if (rc) { |
|
if (rc == -ENOENT) { |
|
rc = -EIO; |
|
rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND; |
|
} |
|
goto err_out; |
|
} |
|
|
|
created = true; |
|
user_ns = mnt_user_ns(path.mnt); |
|
if (ea_buf) { |
|
rc = smb2_set_ea(&ea_buf->ea, &path); |
|
if (rc == -EOPNOTSUPP) |
|
rc = 0; |
|
else if (rc) |
|
goto err_out; |
|
} |
|
} else if (!already_permitted) { |
|
/* FILE_READ_ATTRIBUTE is allowed without inode_permission, |
|
* because execute(search) permission on a parent directory, |
|
* is already granted. |
|
*/ |
|
if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) { |
|
rc = inode_permission(user_ns, |
|
d_inode(path.dentry), |
|
may_flags); |
|
if (rc) |
|
goto err_out; |
|
|
|
if ((daccess & FILE_DELETE_LE) || |
|
(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { |
|
rc = ksmbd_vfs_may_delete(user_ns, |
|
path.dentry); |
|
if (rc) |
|
goto err_out; |
|
} |
|
} |
|
} |
|
|
|
rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent)); |
|
if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) { |
|
rc = -EBUSY; |
|
goto err_out; |
|
} |
|
|
|
rc = 0; |
|
filp = dentry_open(&path, open_flags, current_cred()); |
|
if (IS_ERR(filp)) { |
|
rc = PTR_ERR(filp); |
|
pr_err("dentry open for dir failed, rc %d\n", rc); |
|
goto err_out; |
|
} |
|
|
|
if (file_present) { |
|
if (!(open_flags & O_TRUNC)) |
|
file_info = FILE_OPENED; |
|
else |
|
file_info = FILE_OVERWRITTEN; |
|
|
|
if ((req->CreateDisposition & FILE_CREATE_MASK_LE) == |
|
FILE_SUPERSEDE_LE) |
|
file_info = FILE_SUPERSEDED; |
|
} else if (open_flags & O_CREAT) { |
|
file_info = FILE_CREATED; |
|
} |
|
|
|
ksmbd_vfs_set_fadvise(filp, req->CreateOptions); |
|
|
|
/* Obtain Volatile-ID */ |
|
fp = ksmbd_open_fd(work, filp); |
|
if (IS_ERR(fp)) { |
|
fput(filp); |
|
rc = PTR_ERR(fp); |
|
fp = NULL; |
|
goto err_out; |
|
} |
|
|
|
/* Get Persistent-ID */ |
|
ksmbd_open_durable_fd(fp); |
|
if (!has_file_id(fp->persistent_id)) { |
|
rc = -ENOMEM; |
|
goto err_out; |
|
} |
|
|
|
fp->filename = name; |
|
fp->cdoption = req->CreateDisposition; |
|
fp->daccess = daccess; |
|
fp->saccess = req->ShareAccess; |
|
fp->coption = req->CreateOptions; |
|
|
|
/* Set default windows and posix acls if creating new file */ |
|
if (created) { |
|
int posix_acl_rc; |
|
struct inode *inode = d_inode(path.dentry); |
|
|
|
posix_acl_rc = ksmbd_vfs_inherit_posix_acl(user_ns, |
|
inode, |
|
d_inode(path.dentry->d_parent)); |
|
if (posix_acl_rc) |
|
ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc); |
|
|
|
if (test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_ACL_XATTR)) { |
|
rc = smb_inherit_dacl(conn, &path, sess->user->uid, |
|
sess->user->gid); |
|
} |
|
|
|
if (rc) { |
|
rc = smb2_create_sd_buffer(work, req, &path); |
|
if (rc) { |
|
if (posix_acl_rc) |
|
ksmbd_vfs_set_init_posix_acl(user_ns, |
|
inode); |
|
|
|
if (test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_ACL_XATTR)) { |
|
struct smb_fattr fattr; |
|
struct smb_ntsd *pntsd; |
|
int pntsd_size, ace_num = 0; |
|
|
|
ksmbd_acls_fattr(&fattr, user_ns, inode); |
|
if (fattr.cf_acls) |
|
ace_num = fattr.cf_acls->a_count; |
|
if (fattr.cf_dacls) |
|
ace_num += fattr.cf_dacls->a_count; |
|
|
|
pntsd = kmalloc(sizeof(struct smb_ntsd) + |
|
sizeof(struct smb_sid) * 3 + |
|
sizeof(struct smb_acl) + |
|
sizeof(struct smb_ace) * ace_num * 2, |
|
GFP_KERNEL); |
|
if (!pntsd) |
|
goto err_out; |
|
|
|
rc = build_sec_desc(user_ns, |
|
pntsd, NULL, |
|
OWNER_SECINFO | |
|
GROUP_SECINFO | |
|
DACL_SECINFO, |
|
&pntsd_size, &fattr); |
|
posix_acl_release(fattr.cf_acls); |
|
posix_acl_release(fattr.cf_dacls); |
|
|
|
rc = ksmbd_vfs_set_sd_xattr(conn, |
|
user_ns, |
|
path.dentry, |
|
pntsd, |
|
pntsd_size); |
|
kfree(pntsd); |
|
if (rc) |
|
pr_err("failed to store ntacl in xattr : %d\n", |
|
rc); |
|
} |
|
} |
|
} |
|
rc = 0; |
|
} |
|
|
|
if (stream_name) { |
|
rc = smb2_set_stream_name_xattr(&path, |
|
fp, |
|
stream_name, |
|
s_type); |
|
if (rc) |
|
goto err_out; |
|
file_info = FILE_CREATED; |
|
} |
|
|
|
fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE | |
|
FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE)); |
|
if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC && |
|
!fp->attrib_only && !stream_name) { |
|
smb_break_all_oplock(work, fp); |
|
need_truncate = 1; |
|
} |
|
|
|
/* fp should be searchable through ksmbd_inode.m_fp_list |
|
* after daccess, saccess, attrib_only, and stream are |
|
* initialized. |
|
*/ |
|
write_lock(&fp->f_ci->m_lock); |
|
list_add(&fp->node, &fp->f_ci->m_fp_list); |
|
write_unlock(&fp->f_ci->m_lock); |
|
|
|
rc = ksmbd_vfs_getattr(&path, &stat); |
|
if (rc) { |
|
generic_fillattr(user_ns, d_inode(path.dentry), &stat); |
|
rc = 0; |
|
} |
|
|
|
/* Check delete pending among previous fp before oplock break */ |
|
if (ksmbd_inode_pending_delete(fp)) { |
|
rc = -EBUSY; |
|
goto err_out; |
|
} |
|
|
|
share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp); |
|
if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) || |
|
(req_op_level == SMB2_OPLOCK_LEVEL_LEASE && |
|
!(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) { |
|
if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) { |
|
rc = share_ret; |
|
goto err_out; |
|
} |
|
} else { |
|
if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) { |
|
req_op_level = smb2_map_lease_to_oplock(lc->req_state); |
|
ksmbd_debug(SMB, |
|
"lease req for(%s) req oplock state 0x%x, lease state 0x%x\n", |
|
name, req_op_level, lc->req_state); |
|
rc = find_same_lease_key(sess, fp->f_ci, lc); |
|
if (rc) |
|
goto err_out; |
|
} else if (open_flags == O_RDONLY && |
|
(req_op_level == SMB2_OPLOCK_LEVEL_BATCH || |
|
req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE)) |
|
req_op_level = SMB2_OPLOCK_LEVEL_II; |
|
|
|
rc = smb_grant_oplock(work, req_op_level, |
|
fp->persistent_id, fp, |
|
le32_to_cpu(req->hdr.Id.SyncId.TreeId), |
|
lc, share_ret); |
|
if (rc < 0) |
|
goto err_out; |
|
} |
|
|
|
if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) |
|
ksmbd_fd_set_delete_on_close(fp, file_info); |
|
|
|
if (need_truncate) { |
|
rc = smb2_create_truncate(&path); |
|
if (rc) |
|
goto err_out; |
|
} |
|
|
|
if (req->CreateContextsOffset) { |
|
struct create_alloc_size_req *az_req; |
|
|
|
az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req, |
|
SMB2_CREATE_ALLOCATION_SIZE); |
|
if (IS_ERR(az_req)) { |
|
rc = PTR_ERR(az_req); |
|
goto err_out; |
|
} else if (az_req) { |
|
loff_t alloc_size = le64_to_cpu(az_req->AllocationSize); |
|
int err; |
|
|
|
ksmbd_debug(SMB, |
|
"request smb2 create allocate size : %llu\n", |
|
alloc_size); |
|
smb_break_all_levII_oplock(work, fp, 1); |
|
err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, |
|
alloc_size); |
|
if (err < 0) |
|
ksmbd_debug(SMB, |
|
"vfs_fallocate is failed : %d\n", |
|
err); |
|
} |
|
|
|
context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID); |
|
if (IS_ERR(context)) { |
|
rc = PTR_ERR(context); |
|
goto err_out; |
|
} else if (context) { |
|
ksmbd_debug(SMB, "get query on disk id context\n"); |
|
query_disk_id = 1; |
|
} |
|
} |
|
|
|
if (stat.result_mask & STATX_BTIME) |
|
fp->create_time = ksmbd_UnixTimeToNT(stat.btime); |
|
else |
|
fp->create_time = ksmbd_UnixTimeToNT(stat.ctime); |
|
if (req->FileAttributes || fp->f_ci->m_fattr == 0) |
|
fp->f_ci->m_fattr = |
|
cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes))); |
|
|
|
if (!created) |
|
smb2_update_xattrs(tcon, &path, fp); |
|
else |
|
smb2_new_xattrs(tcon, &path, fp); |
|
|
|
memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE); |
|
|
|
generic_fillattr(user_ns, file_inode(fp->filp), |
|
&stat); |
|
|
|
rsp->StructureSize = cpu_to_le16(89); |
|
rcu_read_lock(); |
|
opinfo = rcu_dereference(fp->f_opinfo); |
|
rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0; |
|
rcu_read_unlock(); |
|
rsp->Reserved = 0; |
|
rsp->CreateAction = cpu_to_le32(file_info); |
|
rsp->CreationTime = cpu_to_le64(fp->create_time); |
|
time = ksmbd_UnixTimeToNT(stat.atime); |
|
rsp->LastAccessTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.mtime); |
|
rsp->LastWriteTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.ctime); |
|
rsp->ChangeTime = cpu_to_le64(time); |
|
rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 : |
|
cpu_to_le64(stat.blocks << 9); |
|
rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); |
|
rsp->FileAttributes = fp->f_ci->m_fattr; |
|
|
|
rsp->Reserved2 = 0; |
|
|
|
rsp->PersistentFileId = cpu_to_le64(fp->persistent_id); |
|
rsp->VolatileFileId = cpu_to_le64(fp->volatile_id); |
|
|
|
rsp->CreateContextsOffset = 0; |
|
rsp->CreateContextsLength = 0; |
|
inc_rfc1001_len(rsp_org, 88); /* StructureSize - 1*/ |
|
|
|
/* If lease is request send lease context response */ |
|
if (opinfo && opinfo->is_lease) { |
|
struct create_context *lease_ccontext; |
|
|
|
ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n", |
|
name, opinfo->o_lease->state); |
|
rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE; |
|
|
|
lease_ccontext = (struct create_context *)rsp->Buffer; |
|
contxt_cnt++; |
|
create_lease_buf(rsp->Buffer, opinfo->o_lease); |
|
le32_add_cpu(&rsp->CreateContextsLength, |
|
conn->vals->create_lease_size); |
|
inc_rfc1001_len(rsp_org, conn->vals->create_lease_size); |
|
next_ptr = &lease_ccontext->Next; |
|
next_off = conn->vals->create_lease_size; |
|
} |
|
|
|
if (maximal_access_ctxt) { |
|
struct create_context *mxac_ccontext; |
|
|
|
if (maximal_access == 0) |
|
ksmbd_vfs_query_maximal_access(user_ns, |
|
path.dentry, |
|
&maximal_access); |
|
mxac_ccontext = (struct create_context *)(rsp->Buffer + |
|
le32_to_cpu(rsp->CreateContextsLength)); |
|
contxt_cnt++; |
|
create_mxac_rsp_buf(rsp->Buffer + |
|
le32_to_cpu(rsp->CreateContextsLength), |
|
le32_to_cpu(maximal_access)); |
|
le32_add_cpu(&rsp->CreateContextsLength, |
|
conn->vals->create_mxac_size); |
|
inc_rfc1001_len(rsp_org, conn->vals->create_mxac_size); |
|
if (next_ptr) |
|
*next_ptr = cpu_to_le32(next_off); |
|
next_ptr = &mxac_ccontext->Next; |
|
next_off = conn->vals->create_mxac_size; |
|
} |
|
|
|
if (query_disk_id) { |
|
struct create_context *disk_id_ccontext; |
|
|
|
disk_id_ccontext = (struct create_context *)(rsp->Buffer + |
|
le32_to_cpu(rsp->CreateContextsLength)); |
|
contxt_cnt++; |
|
create_disk_id_rsp_buf(rsp->Buffer + |
|
le32_to_cpu(rsp->CreateContextsLength), |
|
stat.ino, tcon->id); |
|
le32_add_cpu(&rsp->CreateContextsLength, |
|
conn->vals->create_disk_id_size); |
|
inc_rfc1001_len(rsp_org, conn->vals->create_disk_id_size); |
|
if (next_ptr) |
|
*next_ptr = cpu_to_le32(next_off); |
|
next_ptr = &disk_id_ccontext->Next; |
|
next_off = conn->vals->create_disk_id_size; |
|
} |
|
|
|
if (posix_ctxt) { |
|
contxt_cnt++; |
|
create_posix_rsp_buf(rsp->Buffer + |
|
le32_to_cpu(rsp->CreateContextsLength), |
|
fp); |
|
le32_add_cpu(&rsp->CreateContextsLength, |
|
conn->vals->create_posix_size); |
|
inc_rfc1001_len(rsp_org, conn->vals->create_posix_size); |
|
if (next_ptr) |
|
*next_ptr = cpu_to_le32(next_off); |
|
} |
|
|
|
if (contxt_cnt > 0) { |
|
rsp->CreateContextsOffset = |
|
cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer) |
|
- 4); |
|
} |
|
|
|
err_out: |
|
if (file_present || created) |
|
path_put(&path); |
|
ksmbd_revert_fsids(work); |
|
err_out1: |
|
if (rc) { |
|
if (rc == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else if (rc == -EOPNOTSUPP) |
|
rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
|
else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
else if (rc == -ENOENT) |
|
rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; |
|
else if (rc == -EPERM) |
|
rsp->hdr.Status = STATUS_SHARING_VIOLATION; |
|
else if (rc == -EBUSY) |
|
rsp->hdr.Status = STATUS_DELETE_PENDING; |
|
else if (rc == -EBADF) |
|
rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; |
|
else if (rc == -ENOEXEC) |
|
rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID; |
|
else if (rc == -ENXIO) |
|
rsp->hdr.Status = STATUS_NO_SUCH_DEVICE; |
|
else if (rc == -EEXIST) |
|
rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; |
|
else if (rc == -EMFILE) |
|
rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; |
|
if (!rsp->hdr.Status) |
|
rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; |
|
|
|
if (!fp || !fp->filename) |
|
kfree(name); |
|
if (fp) |
|
ksmbd_fd_put(work, fp); |
|
smb2_set_err_rsp(work); |
|
ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status); |
|
} |
|
|
|
kfree(lc); |
|
|
|
return 0; |
|
} |
|
|
|
static int readdir_info_level_struct_sz(int info_level) |
|
{ |
|
switch (info_level) { |
|
case FILE_FULL_DIRECTORY_INFORMATION: |
|
return sizeof(struct file_full_directory_info); |
|
case FILE_BOTH_DIRECTORY_INFORMATION: |
|
return sizeof(struct file_both_directory_info); |
|
case FILE_DIRECTORY_INFORMATION: |
|
return sizeof(struct file_directory_info); |
|
case FILE_NAMES_INFORMATION: |
|
return sizeof(struct file_names_info); |
|
case FILEID_FULL_DIRECTORY_INFORMATION: |
|
return sizeof(struct file_id_full_dir_info); |
|
case FILEID_BOTH_DIRECTORY_INFORMATION: |
|
return sizeof(struct file_id_both_directory_info); |
|
case SMB_FIND_FILE_POSIX_INFO: |
|
return sizeof(struct smb2_posix_info); |
|
default: |
|
return -EOPNOTSUPP; |
|
} |
|
} |
|
|
|
static int dentry_name(struct ksmbd_dir_info *d_info, int info_level) |
|
{ |
|
switch (info_level) { |
|
case FILE_FULL_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_full_directory_info *ffdinfo; |
|
|
|
ffdinfo = (struct file_full_directory_info *)d_info->rptr; |
|
d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset); |
|
d_info->name = ffdinfo->FileName; |
|
d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength); |
|
return 0; |
|
} |
|
case FILE_BOTH_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_both_directory_info *fbdinfo; |
|
|
|
fbdinfo = (struct file_both_directory_info *)d_info->rptr; |
|
d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset); |
|
d_info->name = fbdinfo->FileName; |
|
d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength); |
|
return 0; |
|
} |
|
case FILE_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_directory_info *fdinfo; |
|
|
|
fdinfo = (struct file_directory_info *)d_info->rptr; |
|
d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset); |
|
d_info->name = fdinfo->FileName; |
|
d_info->name_len = le32_to_cpu(fdinfo->FileNameLength); |
|
return 0; |
|
} |
|
case FILE_NAMES_INFORMATION: |
|
{ |
|
struct file_names_info *fninfo; |
|
|
|
fninfo = (struct file_names_info *)d_info->rptr; |
|
d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset); |
|
d_info->name = fninfo->FileName; |
|
d_info->name_len = le32_to_cpu(fninfo->FileNameLength); |
|
return 0; |
|
} |
|
case FILEID_FULL_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_id_full_dir_info *dinfo; |
|
|
|
dinfo = (struct file_id_full_dir_info *)d_info->rptr; |
|
d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset); |
|
d_info->name = dinfo->FileName; |
|
d_info->name_len = le32_to_cpu(dinfo->FileNameLength); |
|
return 0; |
|
} |
|
case FILEID_BOTH_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_id_both_directory_info *fibdinfo; |
|
|
|
fibdinfo = (struct file_id_both_directory_info *)d_info->rptr; |
|
d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset); |
|
d_info->name = fibdinfo->FileName; |
|
d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength); |
|
return 0; |
|
} |
|
case SMB_FIND_FILE_POSIX_INFO: |
|
{ |
|
struct smb2_posix_info *posix_info; |
|
|
|
posix_info = (struct smb2_posix_info *)d_info->rptr; |
|
d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset); |
|
d_info->name = posix_info->name; |
|
d_info->name_len = le32_to_cpu(posix_info->name_len); |
|
return 0; |
|
} |
|
default: |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
/** |
|
* smb2_populate_readdir_entry() - encode directory entry in smb2 response |
|
* buffer |
|
* @conn: connection instance |
|
* @info_level: smb information level |
|
* @d_info: structure included variables for query dir |
|
* @user_ns: user namespace |
|
* @ksmbd_kstat: ksmbd wrapper of dirent stat information |
|
* |
|
* if directory has many entries, find first can't read it fully. |
|
* find next might be called multiple times to read remaining dir entries |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level, |
|
struct ksmbd_dir_info *d_info, |
|
struct ksmbd_kstat *ksmbd_kstat) |
|
{ |
|
int next_entry_offset = 0; |
|
char *conv_name; |
|
int conv_len; |
|
void *kstat; |
|
int struct_sz, rc = 0; |
|
|
|
conv_name = ksmbd_convert_dir_info_name(d_info, |
|
conn->local_nls, |
|
&conv_len); |
|
if (!conv_name) |
|
return -ENOMEM; |
|
|
|
/* Somehow the name has only terminating NULL bytes */ |
|
if (conv_len < 0) { |
|
rc = -EINVAL; |
|
goto free_conv_name; |
|
} |
|
|
|
struct_sz = readdir_info_level_struct_sz(info_level); |
|
next_entry_offset = ALIGN(struct_sz - 1 + conv_len, |
|
KSMBD_DIR_INFO_ALIGNMENT); |
|
|
|
if (next_entry_offset > d_info->out_buf_len) { |
|
d_info->out_buf_len = 0; |
|
rc = -ENOSPC; |
|
goto free_conv_name; |
|
} |
|
|
|
kstat = d_info->wptr; |
|
if (info_level != FILE_NAMES_INFORMATION) |
|
kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat); |
|
|
|
switch (info_level) { |
|
case FILE_FULL_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_full_directory_info *ffdinfo; |
|
|
|
ffdinfo = (struct file_full_directory_info *)kstat; |
|
ffdinfo->FileNameLength = cpu_to_le32(conv_len); |
|
ffdinfo->EaSize = |
|
smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); |
|
if (ffdinfo->EaSize) |
|
ffdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; |
|
if (d_info->hide_dot_file && d_info->name[0] == '.') |
|
ffdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; |
|
memcpy(ffdinfo->FileName, conv_name, conv_len); |
|
ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILE_BOTH_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_both_directory_info *fbdinfo; |
|
|
|
fbdinfo = (struct file_both_directory_info *)kstat; |
|
fbdinfo->FileNameLength = cpu_to_le32(conv_len); |
|
fbdinfo->EaSize = |
|
smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); |
|
if (fbdinfo->EaSize) |
|
fbdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; |
|
fbdinfo->ShortNameLength = 0; |
|
fbdinfo->Reserved = 0; |
|
if (d_info->hide_dot_file && d_info->name[0] == '.') |
|
fbdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; |
|
memcpy(fbdinfo->FileName, conv_name, conv_len); |
|
fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILE_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_directory_info *fdinfo; |
|
|
|
fdinfo = (struct file_directory_info *)kstat; |
|
fdinfo->FileNameLength = cpu_to_le32(conv_len); |
|
if (d_info->hide_dot_file && d_info->name[0] == '.') |
|
fdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; |
|
memcpy(fdinfo->FileName, conv_name, conv_len); |
|
fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILE_NAMES_INFORMATION: |
|
{ |
|
struct file_names_info *fninfo; |
|
|
|
fninfo = (struct file_names_info *)kstat; |
|
fninfo->FileNameLength = cpu_to_le32(conv_len); |
|
memcpy(fninfo->FileName, conv_name, conv_len); |
|
fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILEID_FULL_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_id_full_dir_info *dinfo; |
|
|
|
dinfo = (struct file_id_full_dir_info *)kstat; |
|
dinfo->FileNameLength = cpu_to_le32(conv_len); |
|
dinfo->EaSize = |
|
smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); |
|
if (dinfo->EaSize) |
|
dinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; |
|
dinfo->Reserved = 0; |
|
dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); |
|
if (d_info->hide_dot_file && d_info->name[0] == '.') |
|
dinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; |
|
memcpy(dinfo->FileName, conv_name, conv_len); |
|
dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILEID_BOTH_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_id_both_directory_info *fibdinfo; |
|
|
|
fibdinfo = (struct file_id_both_directory_info *)kstat; |
|
fibdinfo->FileNameLength = cpu_to_le32(conv_len); |
|
fibdinfo->EaSize = |
|
smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); |
|
if (fibdinfo->EaSize) |
|
fibdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; |
|
fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); |
|
fibdinfo->ShortNameLength = 0; |
|
fibdinfo->Reserved = 0; |
|
fibdinfo->Reserved2 = cpu_to_le16(0); |
|
if (d_info->hide_dot_file && d_info->name[0] == '.') |
|
fibdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; |
|
memcpy(fibdinfo->FileName, conv_name, conv_len); |
|
fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case SMB_FIND_FILE_POSIX_INFO: |
|
{ |
|
struct smb2_posix_info *posix_info; |
|
u64 time; |
|
|
|
posix_info = (struct smb2_posix_info *)kstat; |
|
posix_info->Ignored = 0; |
|
posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time); |
|
time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime); |
|
posix_info->ChangeTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime); |
|
posix_info->LastAccessTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime); |
|
posix_info->LastWriteTime = cpu_to_le64(time); |
|
posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size); |
|
posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9); |
|
posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev); |
|
posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink); |
|
posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode); |
|
posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino); |
|
posix_info->DosAttributes = |
|
S_ISDIR(ksmbd_kstat->kstat->mode) ? ATTR_DIRECTORY_LE : ATTR_ARCHIVE_LE; |
|
if (d_info->hide_dot_file && d_info->name[0] == '.') |
|
posix_info->DosAttributes |= ATTR_HIDDEN_LE; |
|
id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid), |
|
SIDNFS_USER, (struct smb_sid *)&posix_info->SidBuffer[0]); |
|
id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid), |
|
SIDNFS_GROUP, (struct smb_sid *)&posix_info->SidBuffer[20]); |
|
memcpy(posix_info->name, conv_name, conv_len); |
|
posix_info->name_len = cpu_to_le32(conv_len); |
|
posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
|
|
} /* switch (info_level) */ |
|
|
|
d_info->last_entry_offset = d_info->data_count; |
|
d_info->data_count += next_entry_offset; |
|
d_info->out_buf_len -= next_entry_offset; |
|
d_info->wptr += next_entry_offset; |
|
|
|
ksmbd_debug(SMB, |
|
"info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n", |
|
info_level, d_info->out_buf_len, |
|
next_entry_offset, d_info->data_count); |
|
|
|
free_conv_name: |
|
kfree(conv_name); |
|
return rc; |
|
} |
|
|
|
struct smb2_query_dir_private { |
|
struct ksmbd_work *work; |
|
char *search_pattern; |
|
struct ksmbd_file *dir_fp; |
|
|
|
struct ksmbd_dir_info *d_info; |
|
int info_level; |
|
}; |
|
|
|
static void lock_dir(struct ksmbd_file *dir_fp) |
|
{ |
|
struct dentry *dir = dir_fp->filp->f_path.dentry; |
|
|
|
inode_lock_nested(d_inode(dir), I_MUTEX_PARENT); |
|
} |
|
|
|
static void unlock_dir(struct ksmbd_file *dir_fp) |
|
{ |
|
struct dentry *dir = dir_fp->filp->f_path.dentry; |
|
|
|
inode_unlock(d_inode(dir)); |
|
} |
|
|
|
static int process_query_dir_entries(struct smb2_query_dir_private *priv) |
|
{ |
|
struct user_namespace *user_ns = file_mnt_user_ns(priv->dir_fp->filp); |
|
struct kstat kstat; |
|
struct ksmbd_kstat ksmbd_kstat; |
|
int rc; |
|
int i; |
|
|
|
for (i = 0; i < priv->d_info->num_entry; i++) { |
|
struct dentry *dent; |
|
|
|
if (dentry_name(priv->d_info, priv->info_level)) |
|
return -EINVAL; |
|
|
|
lock_dir(priv->dir_fp); |
|
dent = lookup_one(user_ns, priv->d_info->name, |
|
priv->dir_fp->filp->f_path.dentry, |
|
priv->d_info->name_len); |
|
unlock_dir(priv->dir_fp); |
|
|
|
if (IS_ERR(dent)) { |
|
ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n", |
|
priv->d_info->name, |
|
PTR_ERR(dent)); |
|
continue; |
|
} |
|
if (unlikely(d_is_negative(dent))) { |
|
dput(dent); |
|
ksmbd_debug(SMB, "Negative dentry `%s'\n", |
|
priv->d_info->name); |
|
continue; |
|
} |
|
|
|
ksmbd_kstat.kstat = &kstat; |
|
if (priv->info_level != FILE_NAMES_INFORMATION) |
|
ksmbd_vfs_fill_dentry_attrs(priv->work, |
|
user_ns, |
|
dent, |
|
&ksmbd_kstat); |
|
|
|
rc = smb2_populate_readdir_entry(priv->work->conn, |
|
priv->info_level, |
|
priv->d_info, |
|
&ksmbd_kstat); |
|
dput(dent); |
|
if (rc) |
|
return rc; |
|
} |
|
return 0; |
|
} |
|
|
|
static int reserve_populate_dentry(struct ksmbd_dir_info *d_info, |
|
int info_level) |
|
{ |
|
int struct_sz; |
|
int conv_len; |
|
int next_entry_offset; |
|
|
|
struct_sz = readdir_info_level_struct_sz(info_level); |
|
if (struct_sz == -EOPNOTSUPP) |
|
return -EOPNOTSUPP; |
|
|
|
conv_len = (d_info->name_len + 1) * 2; |
|
next_entry_offset = ALIGN(struct_sz - 1 + conv_len, |
|
KSMBD_DIR_INFO_ALIGNMENT); |
|
|
|
if (next_entry_offset > d_info->out_buf_len) { |
|
d_info->out_buf_len = 0; |
|
return -ENOSPC; |
|
} |
|
|
|
switch (info_level) { |
|
case FILE_FULL_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_full_directory_info *ffdinfo; |
|
|
|
ffdinfo = (struct file_full_directory_info *)d_info->wptr; |
|
memcpy(ffdinfo->FileName, d_info->name, d_info->name_len); |
|
ffdinfo->FileName[d_info->name_len] = 0x00; |
|
ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len); |
|
ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILE_BOTH_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_both_directory_info *fbdinfo; |
|
|
|
fbdinfo = (struct file_both_directory_info *)d_info->wptr; |
|
memcpy(fbdinfo->FileName, d_info->name, d_info->name_len); |
|
fbdinfo->FileName[d_info->name_len] = 0x00; |
|
fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len); |
|
fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILE_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_directory_info *fdinfo; |
|
|
|
fdinfo = (struct file_directory_info *)d_info->wptr; |
|
memcpy(fdinfo->FileName, d_info->name, d_info->name_len); |
|
fdinfo->FileName[d_info->name_len] = 0x00; |
|
fdinfo->FileNameLength = cpu_to_le32(d_info->name_len); |
|
fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILE_NAMES_INFORMATION: |
|
{ |
|
struct file_names_info *fninfo; |
|
|
|
fninfo = (struct file_names_info *)d_info->wptr; |
|
memcpy(fninfo->FileName, d_info->name, d_info->name_len); |
|
fninfo->FileName[d_info->name_len] = 0x00; |
|
fninfo->FileNameLength = cpu_to_le32(d_info->name_len); |
|
fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILEID_FULL_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_id_full_dir_info *dinfo; |
|
|
|
dinfo = (struct file_id_full_dir_info *)d_info->wptr; |
|
memcpy(dinfo->FileName, d_info->name, d_info->name_len); |
|
dinfo->FileName[d_info->name_len] = 0x00; |
|
dinfo->FileNameLength = cpu_to_le32(d_info->name_len); |
|
dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case FILEID_BOTH_DIRECTORY_INFORMATION: |
|
{ |
|
struct file_id_both_directory_info *fibdinfo; |
|
|
|
fibdinfo = (struct file_id_both_directory_info *)d_info->wptr; |
|
memcpy(fibdinfo->FileName, d_info->name, d_info->name_len); |
|
fibdinfo->FileName[d_info->name_len] = 0x00; |
|
fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len); |
|
fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
case SMB_FIND_FILE_POSIX_INFO: |
|
{ |
|
struct smb2_posix_info *posix_info; |
|
|
|
posix_info = (struct smb2_posix_info *)d_info->wptr; |
|
memcpy(posix_info->name, d_info->name, d_info->name_len); |
|
posix_info->name[d_info->name_len] = 0x00; |
|
posix_info->name_len = cpu_to_le32(d_info->name_len); |
|
posix_info->NextEntryOffset = |
|
cpu_to_le32(next_entry_offset); |
|
break; |
|
} |
|
} /* switch (info_level) */ |
|
|
|
d_info->num_entry++; |
|
d_info->out_buf_len -= next_entry_offset; |
|
d_info->wptr += next_entry_offset; |
|
return 0; |
|
} |
|
|
|
static int __query_dir(struct dir_context *ctx, const char *name, int namlen, |
|
loff_t offset, u64 ino, unsigned int d_type) |
|
{ |
|
struct ksmbd_readdir_data *buf; |
|
struct smb2_query_dir_private *priv; |
|
struct ksmbd_dir_info *d_info; |
|
int rc; |
|
|
|
buf = container_of(ctx, struct ksmbd_readdir_data, ctx); |
|
priv = buf->private; |
|
d_info = priv->d_info; |
|
|
|
/* dot and dotdot entries are already reserved */ |
|
if (!strcmp(".", name) || !strcmp("..", name)) |
|
return 0; |
|
if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name)) |
|
return 0; |
|
if (!match_pattern(name, namlen, priv->search_pattern)) |
|
return 0; |
|
|
|
d_info->name = name; |
|
d_info->name_len = namlen; |
|
rc = reserve_populate_dentry(d_info, priv->info_level); |
|
if (rc) |
|
return rc; |
|
if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) { |
|
d_info->out_buf_len = 0; |
|
return 0; |
|
} |
|
return 0; |
|
} |
|
|
|
static void restart_ctx(struct dir_context *ctx) |
|
{ |
|
ctx->pos = 0; |
|
} |
|
|
|
static int verify_info_level(int info_level) |
|
{ |
|
switch (info_level) { |
|
case FILE_FULL_DIRECTORY_INFORMATION: |
|
case FILE_BOTH_DIRECTORY_INFORMATION: |
|
case FILE_DIRECTORY_INFORMATION: |
|
case FILE_NAMES_INFORMATION: |
|
case FILEID_FULL_DIRECTORY_INFORMATION: |
|
case FILEID_BOTH_DIRECTORY_INFORMATION: |
|
case SMB_FIND_FILE_POSIX_INFO: |
|
break; |
|
default: |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int smb2_query_dir(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_query_directory_req *req; |
|
struct smb2_query_directory_rsp *rsp, *rsp_org; |
|
struct ksmbd_share_config *share = work->tcon->share_conf; |
|
struct ksmbd_file *dir_fp = NULL; |
|
struct ksmbd_dir_info d_info; |
|
int rc = 0; |
|
char *srch_ptr = NULL; |
|
unsigned char srch_flag; |
|
int buffer_sz; |
|
struct smb2_query_dir_private query_dir_private = {NULL, }; |
|
|
|
rsp_org = work->response_buf; |
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
if (ksmbd_override_fsids(work)) { |
|
rsp->hdr.Status = STATUS_NO_MEMORY; |
|
smb2_set_err_rsp(work); |
|
return -ENOMEM; |
|
} |
|
|
|
rc = verify_info_level(req->FileInformationClass); |
|
if (rc) { |
|
rc = -EFAULT; |
|
goto err_out2; |
|
} |
|
|
|
dir_fp = ksmbd_lookup_fd_slow(work, |
|
le64_to_cpu(req->VolatileFileId), |
|
le64_to_cpu(req->PersistentFileId)); |
|
if (!dir_fp) { |
|
rc = -EBADF; |
|
goto err_out2; |
|
} |
|
|
|
if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) || |
|
inode_permission(file_mnt_user_ns(dir_fp->filp), |
|
file_inode(dir_fp->filp), |
|
MAY_READ | MAY_EXEC)) { |
|
pr_err("no right to enumerate directory (%pd)\n", |
|
dir_fp->filp->f_path.dentry); |
|
rc = -EACCES; |
|
goto err_out2; |
|
} |
|
|
|
if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) { |
|
pr_err("can't do query dir for a file\n"); |
|
rc = -EINVAL; |
|
goto err_out2; |
|
} |
|
|
|
srch_flag = req->Flags; |
|
srch_ptr = smb_strndup_from_utf16(req->Buffer, |
|
le16_to_cpu(req->FileNameLength), 1, |
|
conn->local_nls); |
|
if (IS_ERR(srch_ptr)) { |
|
ksmbd_debug(SMB, "Search Pattern not found\n"); |
|
rc = -EINVAL; |
|
goto err_out2; |
|
} else { |
|
ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr); |
|
} |
|
|
|
ksmbd_debug(SMB, "Directory name is %s\n", dir_fp->filename); |
|
|
|
if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) { |
|
ksmbd_debug(SMB, "Restart directory scan\n"); |
|
generic_file_llseek(dir_fp->filp, 0, SEEK_SET); |
|
restart_ctx(&dir_fp->readdir_data.ctx); |
|
} |
|
|
|
memset(&d_info, 0, sizeof(struct ksmbd_dir_info)); |
|
d_info.wptr = (char *)rsp->Buffer; |
|
d_info.rptr = (char *)rsp->Buffer; |
|
d_info.out_buf_len = (work->response_sz - (get_rfc1002_len(rsp_org) + 4)); |
|
d_info.out_buf_len = min_t(int, d_info.out_buf_len, le32_to_cpu(req->OutputBufferLength)) - |
|
sizeof(struct smb2_query_directory_rsp); |
|
d_info.flags = srch_flag; |
|
|
|
/* |
|
* reserve dot and dotdot entries in head of buffer |
|
* in first response |
|
*/ |
|
rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass, |
|
dir_fp, &d_info, srch_ptr, |
|
smb2_populate_readdir_entry); |
|
if (rc == -ENOSPC) |
|
rc = 0; |
|
else if (rc) |
|
goto err_out; |
|
|
|
if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES)) |
|
d_info.hide_dot_file = true; |
|
|
|
buffer_sz = d_info.out_buf_len; |
|
d_info.rptr = d_info.wptr; |
|
query_dir_private.work = work; |
|
query_dir_private.search_pattern = srch_ptr; |
|
query_dir_private.dir_fp = dir_fp; |
|
query_dir_private.d_info = &d_info; |
|
query_dir_private.info_level = req->FileInformationClass; |
|
dir_fp->readdir_data.private = &query_dir_private; |
|
set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir); |
|
|
|
rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx); |
|
if (rc == 0) |
|
restart_ctx(&dir_fp->readdir_data.ctx); |
|
if (rc == -ENOSPC) |
|
rc = 0; |
|
if (rc) |
|
goto err_out; |
|
|
|
d_info.wptr = d_info.rptr; |
|
d_info.out_buf_len = buffer_sz; |
|
rc = process_query_dir_entries(&query_dir_private); |
|
if (rc) |
|
goto err_out; |
|
|
|
if (!d_info.data_count && d_info.out_buf_len >= 0) { |
|
if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) { |
|
rsp->hdr.Status = STATUS_NO_SUCH_FILE; |
|
} else { |
|
dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0; |
|
rsp->hdr.Status = STATUS_NO_MORE_FILES; |
|
} |
|
rsp->StructureSize = cpu_to_le16(9); |
|
rsp->OutputBufferOffset = cpu_to_le16(0); |
|
rsp->OutputBufferLength = cpu_to_le32(0); |
|
rsp->Buffer[0] = 0; |
|
inc_rfc1001_len(rsp_org, 9); |
|
} else { |
|
((struct file_directory_info *) |
|
((char *)rsp->Buffer + d_info.last_entry_offset)) |
|
->NextEntryOffset = 0; |
|
|
|
rsp->StructureSize = cpu_to_le16(9); |
|
rsp->OutputBufferOffset = cpu_to_le16(72); |
|
rsp->OutputBufferLength = cpu_to_le32(d_info.data_count); |
|
inc_rfc1001_len(rsp_org, 8 + d_info.data_count); |
|
} |
|
|
|
kfree(srch_ptr); |
|
ksmbd_fd_put(work, dir_fp); |
|
ksmbd_revert_fsids(work); |
|
return 0; |
|
|
|
err_out: |
|
pr_err("error while processing smb2 query dir rc = %d\n", rc); |
|
kfree(srch_ptr); |
|
|
|
err_out2: |
|
if (rc == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else if (rc == -EACCES) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
else if (rc == -ENOENT) |
|
rsp->hdr.Status = STATUS_NO_SUCH_FILE; |
|
else if (rc == -EBADF) |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
else if (rc == -ENOMEM) |
|
rsp->hdr.Status = STATUS_NO_MEMORY; |
|
else if (rc == -EFAULT) |
|
rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; |
|
if (!rsp->hdr.Status) |
|
rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; |
|
|
|
smb2_set_err_rsp(work); |
|
ksmbd_fd_put(work, dir_fp); |
|
ksmbd_revert_fsids(work); |
|
return 0; |
|
} |
|
|
|
/** |
|
* buffer_check_err() - helper function to check buffer errors |
|
* @reqOutputBufferLength: max buffer length expected in command response |
|
* @rsp: query info response buffer contains output buffer length |
|
* @infoclass_size: query info class response buffer size |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
static int buffer_check_err(int reqOutputBufferLength, |
|
struct smb2_query_info_rsp *rsp, int infoclass_size) |
|
{ |
|
if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) { |
|
if (reqOutputBufferLength < infoclass_size) { |
|
pr_err("Invalid Buffer Size Requested\n"); |
|
rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH; |
|
rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4); |
|
return -EINVAL; |
|
} |
|
|
|
ksmbd_debug(SMB, "Buffer Overflow\n"); |
|
rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; |
|
rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4 + |
|
reqOutputBufferLength); |
|
rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength); |
|
} |
|
return 0; |
|
} |
|
|
|
static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp) |
|
{ |
|
struct smb2_file_standard_info *sinfo; |
|
|
|
sinfo = (struct smb2_file_standard_info *)rsp->Buffer; |
|
|
|
sinfo->AllocationSize = cpu_to_le64(4096); |
|
sinfo->EndOfFile = cpu_to_le64(0); |
|
sinfo->NumberOfLinks = cpu_to_le32(1); |
|
sinfo->DeletePending = 1; |
|
sinfo->Directory = 0; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_standard_info)); |
|
inc_rfc1001_len(rsp, sizeof(struct smb2_file_standard_info)); |
|
} |
|
|
|
static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num) |
|
{ |
|
struct smb2_file_internal_info *file_info; |
|
|
|
file_info = (struct smb2_file_internal_info *)rsp->Buffer; |
|
|
|
/* any unique number */ |
|
file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63)); |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_internal_info)); |
|
inc_rfc1001_len(rsp, sizeof(struct smb2_file_internal_info)); |
|
} |
|
|
|
static int smb2_get_info_file_pipe(struct ksmbd_session *sess, |
|
struct smb2_query_info_req *req, |
|
struct smb2_query_info_rsp *rsp) |
|
{ |
|
u64 id; |
|
int rc; |
|
|
|
/* |
|
* Windows can sometime send query file info request on |
|
* pipe without opening it, checking error condition here |
|
*/ |
|
id = le64_to_cpu(req->VolatileFileId); |
|
if (!ksmbd_session_rpc_method(sess, id)) |
|
return -ENOENT; |
|
|
|
ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n", |
|
req->FileInfoClass, le64_to_cpu(req->VolatileFileId)); |
|
|
|
switch (req->FileInfoClass) { |
|
case FILE_STANDARD_INFORMATION: |
|
get_standard_info_pipe(rsp); |
|
rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
|
rsp, FILE_STANDARD_INFORMATION_SIZE); |
|
break; |
|
case FILE_INTERNAL_INFORMATION: |
|
get_internal_info_pipe(rsp, id); |
|
rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
|
rsp, FILE_INTERNAL_INFORMATION_SIZE); |
|
break; |
|
default: |
|
ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n", |
|
req->FileInfoClass); |
|
rc = -EOPNOTSUPP; |
|
} |
|
return rc; |
|
} |
|
|
|
/** |
|
* smb2_get_ea() - handler for smb2 get extended attribute command |
|
* @work: smb work containing query info command buffer |
|
* @fp: ksmbd_file pointer |
|
* @req: get extended attribute request |
|
* @rsp: response buffer pointer |
|
* @rsp_org: base response buffer pointer in case of chained response |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp, |
|
struct smb2_query_info_req *req, |
|
struct smb2_query_info_rsp *rsp, void *rsp_org) |
|
{ |
|
struct smb2_ea_info *eainfo, *prev_eainfo; |
|
char *name, *ptr, *xattr_list = NULL, *buf; |
|
int rc, name_len, value_len, xattr_list_len, idx; |
|
ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0; |
|
struct smb2_ea_info_req *ea_req = NULL; |
|
struct path *path; |
|
struct user_namespace *user_ns = file_mnt_user_ns(fp->filp); |
|
|
|
if (!(fp->daccess & FILE_READ_EA_LE)) { |
|
pr_err("Not permitted to read ext attr : 0x%x\n", |
|
fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
path = &fp->filp->f_path; |
|
/* single EA entry is requested with given user.* name */ |
|
if (req->InputBufferLength) { |
|
if (le32_to_cpu(req->InputBufferLength) < |
|
sizeof(struct smb2_ea_info_req)) |
|
return -EINVAL; |
|
|
|
ea_req = (struct smb2_ea_info_req *)req->Buffer; |
|
} else { |
|
/* need to send all EAs, if no specific EA is requested*/ |
|
if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY) |
|
ksmbd_debug(SMB, |
|
"All EAs are requested but need to send single EA entry in rsp flags 0x%x\n", |
|
le32_to_cpu(req->Flags)); |
|
} |
|
|
|
buf_free_len = work->response_sz - |
|
(get_rfc1002_len(rsp_org) + 4) - |
|
sizeof(struct smb2_query_info_rsp); |
|
|
|
if (le32_to_cpu(req->OutputBufferLength) < buf_free_len) |
|
buf_free_len = le32_to_cpu(req->OutputBufferLength); |
|
|
|
rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list); |
|
if (rc < 0) { |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
goto out; |
|
} else if (!rc) { /* there is no EA in the file */ |
|
ksmbd_debug(SMB, "no ea data in the file\n"); |
|
goto done; |
|
} |
|
xattr_list_len = rc; |
|
|
|
ptr = (char *)rsp->Buffer; |
|
eainfo = (struct smb2_ea_info *)ptr; |
|
prev_eainfo = eainfo; |
|
idx = 0; |
|
|
|
while (idx < xattr_list_len) { |
|
name = xattr_list + idx; |
|
name_len = strlen(name); |
|
|
|
ksmbd_debug(SMB, "%s, len %d\n", name, name_len); |
|
idx += name_len + 1; |
|
|
|
/* |
|
* CIFS does not support EA other than user.* namespace, |
|
* still keep the framework generic, to list other attrs |
|
* in future. |
|
*/ |
|
if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) |
|
continue; |
|
|
|
if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, |
|
STREAM_PREFIX_LEN)) |
|
continue; |
|
|
|
if (req->InputBufferLength && |
|
strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name, |
|
ea_req->EaNameLength)) |
|
continue; |
|
|
|
if (!strncmp(&name[XATTR_USER_PREFIX_LEN], |
|
DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN)) |
|
continue; |
|
|
|
if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) |
|
name_len -= XATTR_USER_PREFIX_LEN; |
|
|
|
ptr = (char *)(&eainfo->name + name_len + 1); |
|
buf_free_len -= (offsetof(struct smb2_ea_info, name) + |
|
name_len + 1); |
|
/* bailout if xattr can't fit in buf_free_len */ |
|
value_len = ksmbd_vfs_getxattr(user_ns, path->dentry, |
|
name, &buf); |
|
if (value_len <= 0) { |
|
rc = -ENOENT; |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
goto out; |
|
} |
|
|
|
buf_free_len -= value_len; |
|
if (buf_free_len < 0) { |
|
kfree(buf); |
|
break; |
|
} |
|
|
|
memcpy(ptr, buf, value_len); |
|
kfree(buf); |
|
|
|
ptr += value_len; |
|
eainfo->Flags = 0; |
|
eainfo->EaNameLength = name_len; |
|
|
|
if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) |
|
memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN], |
|
name_len); |
|
else |
|
memcpy(eainfo->name, name, name_len); |
|
|
|
eainfo->name[name_len] = '\0'; |
|
eainfo->EaValueLength = cpu_to_le16(value_len); |
|
next_offset = offsetof(struct smb2_ea_info, name) + |
|
name_len + 1 + value_len; |
|
|
|
/* align next xattr entry at 4 byte bundary */ |
|
alignment_bytes = ((next_offset + 3) & ~3) - next_offset; |
|
if (alignment_bytes) { |
|
memset(ptr, '\0', alignment_bytes); |
|
ptr += alignment_bytes; |
|
next_offset += alignment_bytes; |
|
buf_free_len -= alignment_bytes; |
|
} |
|
eainfo->NextEntryOffset = cpu_to_le32(next_offset); |
|
prev_eainfo = eainfo; |
|
eainfo = (struct smb2_ea_info *)ptr; |
|
rsp_data_cnt += next_offset; |
|
|
|
if (req->InputBufferLength) { |
|
ksmbd_debug(SMB, "single entry requested\n"); |
|
break; |
|
} |
|
} |
|
|
|
/* no more ea entries */ |
|
prev_eainfo->NextEntryOffset = 0; |
|
done: |
|
rc = 0; |
|
if (rsp_data_cnt == 0) |
|
rsp->hdr.Status = STATUS_NO_EAS_ON_FILE; |
|
rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt); |
|
inc_rfc1001_len(rsp_org, rsp_data_cnt); |
|
out: |
|
kvfree(xattr_list); |
|
return rc; |
|
} |
|
|
|
static void get_file_access_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_access_info *file_info; |
|
|
|
file_info = (struct smb2_file_access_info *)rsp->Buffer; |
|
file_info->AccessFlags = fp->daccess; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_access_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info)); |
|
} |
|
|
|
static int get_file_basic_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_all_info *basic_info; |
|
struct kstat stat; |
|
u64 time; |
|
|
|
if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { |
|
pr_err("no right to read the attributes : 0x%x\n", |
|
fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
basic_info = (struct smb2_file_all_info *)rsp->Buffer; |
|
generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp), |
|
&stat); |
|
basic_info->CreationTime = cpu_to_le64(fp->create_time); |
|
time = ksmbd_UnixTimeToNT(stat.atime); |
|
basic_info->LastAccessTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.mtime); |
|
basic_info->LastWriteTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.ctime); |
|
basic_info->ChangeTime = cpu_to_le64(time); |
|
basic_info->Attributes = fp->f_ci->m_fattr; |
|
basic_info->Pad1 = 0; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(offsetof(struct smb2_file_all_info, AllocationSize)); |
|
inc_rfc1001_len(rsp_org, offsetof(struct smb2_file_all_info, |
|
AllocationSize)); |
|
return 0; |
|
} |
|
|
|
static unsigned long long get_allocation_size(struct inode *inode, |
|
struct kstat *stat) |
|
{ |
|
unsigned long long alloc_size = 0; |
|
|
|
if (!S_ISDIR(stat->mode)) { |
|
if ((inode->i_blocks << 9) <= stat->size) |
|
alloc_size = stat->size; |
|
else |
|
alloc_size = inode->i_blocks << 9; |
|
} |
|
|
|
return alloc_size; |
|
} |
|
|
|
static void get_file_standard_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_standard_info *sinfo; |
|
unsigned int delete_pending; |
|
struct inode *inode; |
|
struct kstat stat; |
|
|
|
inode = file_inode(fp->filp); |
|
generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat); |
|
|
|
sinfo = (struct smb2_file_standard_info *)rsp->Buffer; |
|
delete_pending = ksmbd_inode_pending_delete(fp); |
|
|
|
sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat)); |
|
sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); |
|
sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending); |
|
sinfo->DeletePending = delete_pending; |
|
sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_standard_info)); |
|
inc_rfc1001_len(rsp_org, |
|
sizeof(struct smb2_file_standard_info)); |
|
} |
|
|
|
static void get_file_alignment_info(struct smb2_query_info_rsp *rsp, |
|
void *rsp_org) |
|
{ |
|
struct smb2_file_alignment_info *file_info; |
|
|
|
file_info = (struct smb2_file_alignment_info *)rsp->Buffer; |
|
file_info->AlignmentRequirement = 0; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_alignment_info)); |
|
inc_rfc1001_len(rsp_org, |
|
sizeof(struct smb2_file_alignment_info)); |
|
} |
|
|
|
static int get_file_all_info(struct ksmbd_work *work, |
|
struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, |
|
void *rsp_org) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_file_all_info *file_info; |
|
unsigned int delete_pending; |
|
struct inode *inode; |
|
struct kstat stat; |
|
int conv_len; |
|
char *filename; |
|
u64 time; |
|
|
|
if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { |
|
ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n", |
|
fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
filename = convert_to_nt_pathname(fp->filename); |
|
if (!filename) |
|
return -ENOMEM; |
|
|
|
inode = file_inode(fp->filp); |
|
generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat); |
|
|
|
ksmbd_debug(SMB, "filename = %s\n", filename); |
|
delete_pending = ksmbd_inode_pending_delete(fp); |
|
file_info = (struct smb2_file_all_info *)rsp->Buffer; |
|
|
|
file_info->CreationTime = cpu_to_le64(fp->create_time); |
|
time = ksmbd_UnixTimeToNT(stat.atime); |
|
file_info->LastAccessTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.mtime); |
|
file_info->LastWriteTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.ctime); |
|
file_info->ChangeTime = cpu_to_le64(time); |
|
file_info->Attributes = fp->f_ci->m_fattr; |
|
file_info->Pad1 = 0; |
|
file_info->AllocationSize = |
|
cpu_to_le64(get_allocation_size(inode, &stat)); |
|
file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); |
|
file_info->NumberOfLinks = |
|
cpu_to_le32(get_nlink(&stat) - delete_pending); |
|
file_info->DeletePending = delete_pending; |
|
file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0; |
|
file_info->Pad2 = 0; |
|
file_info->IndexNumber = cpu_to_le64(stat.ino); |
|
file_info->EASize = 0; |
|
file_info->AccessFlags = fp->daccess; |
|
file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); |
|
file_info->Mode = fp->coption; |
|
file_info->AlignmentRequirement = 0; |
|
conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename, |
|
PATH_MAX, conn->local_nls, 0); |
|
conv_len *= 2; |
|
file_info->FileNameLength = cpu_to_le32(conv_len); |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1); |
|
kfree(filename); |
|
inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); |
|
return 0; |
|
} |
|
|
|
static void get_file_alternate_info(struct ksmbd_work *work, |
|
struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, |
|
void *rsp_org) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_file_alt_name_info *file_info; |
|
struct dentry *dentry = fp->filp->f_path.dentry; |
|
int conv_len; |
|
|
|
spin_lock(&dentry->d_lock); |
|
file_info = (struct smb2_file_alt_name_info *)rsp->Buffer; |
|
conv_len = ksmbd_extract_shortname(conn, |
|
dentry->d_name.name, |
|
file_info->FileName); |
|
spin_unlock(&dentry->d_lock); |
|
file_info->FileNameLength = cpu_to_le32(conv_len); |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len); |
|
inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); |
|
} |
|
|
|
static void get_file_stream_info(struct ksmbd_work *work, |
|
struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, |
|
void *rsp_org) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_file_stream_info *file_info; |
|
char *stream_name, *xattr_list = NULL, *stream_buf; |
|
struct kstat stat; |
|
struct path *path = &fp->filp->f_path; |
|
ssize_t xattr_list_len; |
|
int nbytes = 0, streamlen, stream_name_len, next, idx = 0; |
|
|
|
generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp), |
|
&stat); |
|
file_info = (struct smb2_file_stream_info *)rsp->Buffer; |
|
|
|
xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); |
|
if (xattr_list_len < 0) { |
|
goto out; |
|
} else if (!xattr_list_len) { |
|
ksmbd_debug(SMB, "empty xattr in the file\n"); |
|
goto out; |
|
} |
|
|
|
while (idx < xattr_list_len) { |
|
stream_name = xattr_list + idx; |
|
streamlen = strlen(stream_name); |
|
idx += streamlen + 1; |
|
|
|
ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen); |
|
|
|
if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN], |
|
STREAM_PREFIX, STREAM_PREFIX_LEN)) |
|
continue; |
|
|
|
stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN + |
|
STREAM_PREFIX_LEN); |
|
streamlen = stream_name_len; |
|
|
|
/* plus : size */ |
|
streamlen += 1; |
|
stream_buf = kmalloc(streamlen + 1, GFP_KERNEL); |
|
if (!stream_buf) |
|
break; |
|
|
|
streamlen = snprintf(stream_buf, streamlen + 1, |
|
":%s", &stream_name[XATTR_NAME_STREAM_LEN]); |
|
|
|
file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes]; |
|
streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, |
|
stream_buf, streamlen, |
|
conn->local_nls, 0); |
|
streamlen *= 2; |
|
kfree(stream_buf); |
|
file_info->StreamNameLength = cpu_to_le32(streamlen); |
|
file_info->StreamSize = cpu_to_le64(stream_name_len); |
|
file_info->StreamAllocationSize = cpu_to_le64(stream_name_len); |
|
|
|
next = sizeof(struct smb2_file_stream_info) + streamlen; |
|
nbytes += next; |
|
file_info->NextEntryOffset = cpu_to_le32(next); |
|
} |
|
|
|
if (!S_ISDIR(stat.mode)) { |
|
file_info = (struct smb2_file_stream_info *) |
|
&rsp->Buffer[nbytes]; |
|
streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, |
|
"::$DATA", 7, conn->local_nls, 0); |
|
streamlen *= 2; |
|
file_info->StreamNameLength = cpu_to_le32(streamlen); |
|
file_info->StreamSize = 0; |
|
file_info->StreamAllocationSize = 0; |
|
nbytes += sizeof(struct smb2_file_stream_info) + streamlen; |
|
} |
|
|
|
/* last entry offset should be 0 */ |
|
file_info->NextEntryOffset = 0; |
|
out: |
|
kvfree(xattr_list); |
|
|
|
rsp->OutputBufferLength = cpu_to_le32(nbytes); |
|
inc_rfc1001_len(rsp_org, nbytes); |
|
} |
|
|
|
static void get_file_internal_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_internal_info *file_info; |
|
struct kstat stat; |
|
|
|
generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp), |
|
&stat); |
|
file_info = (struct smb2_file_internal_info *)rsp->Buffer; |
|
file_info->IndexNumber = cpu_to_le64(stat.ino); |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_internal_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); |
|
} |
|
|
|
static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_ntwrk_info *file_info; |
|
struct inode *inode; |
|
struct kstat stat; |
|
u64 time; |
|
|
|
if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { |
|
pr_err("no right to read the attributes : 0x%x\n", |
|
fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer; |
|
|
|
inode = file_inode(fp->filp); |
|
generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat); |
|
|
|
file_info->CreationTime = cpu_to_le64(fp->create_time); |
|
time = ksmbd_UnixTimeToNT(stat.atime); |
|
file_info->LastAccessTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.mtime); |
|
file_info->LastWriteTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(stat.ctime); |
|
file_info->ChangeTime = cpu_to_le64(time); |
|
file_info->Attributes = fp->f_ci->m_fattr; |
|
file_info->AllocationSize = |
|
cpu_to_le64(get_allocation_size(inode, &stat)); |
|
file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); |
|
file_info->Reserved = cpu_to_le32(0); |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_ntwrk_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info)); |
|
return 0; |
|
} |
|
|
|
static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org) |
|
{ |
|
struct smb2_file_ea_info *file_info; |
|
|
|
file_info = (struct smb2_file_ea_info *)rsp->Buffer; |
|
file_info->EASize = 0; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_ea_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info)); |
|
} |
|
|
|
static void get_file_position_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_pos_info *file_info; |
|
|
|
file_info = (struct smb2_file_pos_info *)rsp->Buffer; |
|
file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_pos_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info)); |
|
} |
|
|
|
static void get_file_mode_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_mode_info *file_info; |
|
|
|
file_info = (struct smb2_file_mode_info *)rsp->Buffer; |
|
file_info->Mode = fp->coption & FILE_MODE_INFO_MASK; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_mode_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info)); |
|
} |
|
|
|
static void get_file_compression_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_comp_info *file_info; |
|
struct kstat stat; |
|
|
|
generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp), |
|
&stat); |
|
|
|
file_info = (struct smb2_file_comp_info *)rsp->Buffer; |
|
file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9); |
|
file_info->CompressionFormat = COMPRESSION_FORMAT_NONE; |
|
file_info->CompressionUnitShift = 0; |
|
file_info->ChunkShift = 0; |
|
file_info->ClusterShift = 0; |
|
memset(&file_info->Reserved[0], 0, 3); |
|
|
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_comp_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info)); |
|
} |
|
|
|
static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb2_file_attr_tag_info *file_info; |
|
|
|
if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { |
|
pr_err("no right to read the attributes : 0x%x\n", |
|
fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer; |
|
file_info->FileAttributes = fp->f_ci->m_fattr; |
|
file_info->ReparseTag = 0; |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb2_file_attr_tag_info)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info)); |
|
return 0; |
|
} |
|
|
|
static int find_file_posix_info(struct smb2_query_info_rsp *rsp, |
|
struct ksmbd_file *fp, void *rsp_org) |
|
{ |
|
struct smb311_posix_qinfo *file_info; |
|
struct inode *inode = file_inode(fp->filp); |
|
u64 time; |
|
|
|
file_info = (struct smb311_posix_qinfo *)rsp->Buffer; |
|
file_info->CreationTime = cpu_to_le64(fp->create_time); |
|
time = ksmbd_UnixTimeToNT(inode->i_atime); |
|
file_info->LastAccessTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(inode->i_mtime); |
|
file_info->LastWriteTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(inode->i_ctime); |
|
file_info->ChangeTime = cpu_to_le64(time); |
|
file_info->DosAttributes = fp->f_ci->m_fattr; |
|
file_info->Inode = cpu_to_le64(inode->i_ino); |
|
file_info->EndOfFile = cpu_to_le64(inode->i_size); |
|
file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9); |
|
file_info->HardLinks = cpu_to_le32(inode->i_nlink); |
|
file_info->Mode = cpu_to_le32(inode->i_mode); |
|
file_info->DeviceId = cpu_to_le32(inode->i_rdev); |
|
rsp->OutputBufferLength = |
|
cpu_to_le32(sizeof(struct smb311_posix_qinfo)); |
|
inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo)); |
|
return 0; |
|
} |
|
|
|
static int smb2_get_info_file(struct ksmbd_work *work, |
|
struct smb2_query_info_req *req, |
|
struct smb2_query_info_rsp *rsp, void *rsp_org) |
|
{ |
|
struct ksmbd_file *fp; |
|
int fileinfoclass = 0; |
|
int rc = 0; |
|
int file_infoclass_size; |
|
unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; |
|
|
|
if (test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_PIPE)) { |
|
/* smb2 info file called for pipe */ |
|
return smb2_get_info_file_pipe(work->sess, req, rsp); |
|
} |
|
|
|
if (work->next_smb2_rcv_hdr_off) { |
|
if (!has_file_id(le64_to_cpu(req->VolatileFileId))) { |
|
ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
|
work->compound_fid); |
|
id = work->compound_fid; |
|
pid = work->compound_pfid; |
|
} |
|
} |
|
|
|
if (!has_file_id(id)) { |
|
id = le64_to_cpu(req->VolatileFileId); |
|
pid = le64_to_cpu(req->PersistentFileId); |
|
} |
|
|
|
fp = ksmbd_lookup_fd_slow(work, id, pid); |
|
if (!fp) |
|
return -ENOENT; |
|
|
|
fileinfoclass = req->FileInfoClass; |
|
|
|
switch (fileinfoclass) { |
|
case FILE_ACCESS_INFORMATION: |
|
get_file_access_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_BASIC_INFORMATION: |
|
rc = get_file_basic_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_BASIC_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_STANDARD_INFORMATION: |
|
get_file_standard_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_ALIGNMENT_INFORMATION: |
|
get_file_alignment_info(rsp, rsp_org); |
|
file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_ALL_INFORMATION: |
|
rc = get_file_all_info(work, rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_ALL_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_ALTERNATE_NAME_INFORMATION: |
|
get_file_alternate_info(work, rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_STREAM_INFORMATION: |
|
get_file_stream_info(work, rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_STREAM_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_INTERNAL_INFORMATION: |
|
get_file_internal_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_NETWORK_OPEN_INFORMATION: |
|
rc = get_file_network_open_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_EA_INFORMATION: |
|
get_file_ea_info(rsp, rsp_org); |
|
file_infoclass_size = FILE_EA_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_FULL_EA_INFORMATION: |
|
rc = smb2_get_ea(work, fp, req, rsp, rsp_org); |
|
file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_POSITION_INFORMATION: |
|
get_file_position_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_POSITION_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_MODE_INFORMATION: |
|
get_file_mode_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_MODE_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_COMPRESSION_INFORMATION: |
|
get_file_compression_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE; |
|
break; |
|
|
|
case FILE_ATTRIBUTE_TAG_INFORMATION: |
|
rc = get_file_attribute_tag_info(rsp, fp, rsp_org); |
|
file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE; |
|
break; |
|
case SMB_FIND_FILE_POSIX_INFO: |
|
if (!work->tcon->posix_extensions) { |
|
pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
|
rc = -EOPNOTSUPP; |
|
} else { |
|
rc = find_file_posix_info(rsp, fp, rsp_org); |
|
file_infoclass_size = sizeof(struct smb311_posix_qinfo); |
|
} |
|
break; |
|
default: |
|
ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n", |
|
fileinfoclass); |
|
rc = -EOPNOTSUPP; |
|
} |
|
if (!rc) |
|
rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
|
rsp, |
|
file_infoclass_size); |
|
ksmbd_fd_put(work, fp); |
|
return rc; |
|
} |
|
|
|
static int smb2_get_info_filesystem(struct ksmbd_work *work, |
|
struct smb2_query_info_req *req, |
|
struct smb2_query_info_rsp *rsp, void *rsp_org) |
|
{ |
|
struct ksmbd_session *sess = work->sess; |
|
struct ksmbd_conn *conn = sess->conn; |
|
struct ksmbd_share_config *share = work->tcon->share_conf; |
|
int fsinfoclass = 0; |
|
struct kstatfs stfs; |
|
struct path path; |
|
int rc = 0, len; |
|
int fs_infoclass_size = 0; |
|
|
|
rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path); |
|
if (rc) { |
|
pr_err("cannot create vfs path\n"); |
|
return -EIO; |
|
} |
|
|
|
rc = vfs_statfs(&path, &stfs); |
|
if (rc) { |
|
pr_err("cannot do stat of path %s\n", share->path); |
|
path_put(&path); |
|
return -EIO; |
|
} |
|
|
|
fsinfoclass = req->FileInfoClass; |
|
|
|
switch (fsinfoclass) { |
|
case FS_DEVICE_INFORMATION: |
|
{ |
|
struct filesystem_device_info *info; |
|
|
|
info = (struct filesystem_device_info *)rsp->Buffer; |
|
|
|
info->DeviceType = cpu_to_le32(stfs.f_type); |
|
info->DeviceCharacteristics = cpu_to_le32(0x00000020); |
|
rsp->OutputBufferLength = cpu_to_le32(8); |
|
inc_rfc1001_len(rsp_org, 8); |
|
fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_ATTRIBUTE_INFORMATION: |
|
{ |
|
struct filesystem_attribute_info *info; |
|
size_t sz; |
|
|
|
info = (struct filesystem_attribute_info *)rsp->Buffer; |
|
info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS | |
|
FILE_PERSISTENT_ACLS | |
|
FILE_UNICODE_ON_DISK | |
|
FILE_CASE_PRESERVED_NAMES | |
|
FILE_CASE_SENSITIVE_SEARCH | |
|
FILE_SUPPORTS_BLOCK_REFCOUNTING); |
|
|
|
info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps); |
|
|
|
info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen); |
|
len = smbConvertToUTF16((__le16 *)info->FileSystemName, |
|
"NTFS", PATH_MAX, conn->local_nls, 0); |
|
len = len * 2; |
|
info->FileSystemNameLen = cpu_to_le32(len); |
|
sz = sizeof(struct filesystem_attribute_info) - 2 + len; |
|
rsp->OutputBufferLength = cpu_to_le32(sz); |
|
inc_rfc1001_len(rsp_org, sz); |
|
fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_VOLUME_INFORMATION: |
|
{ |
|
struct filesystem_vol_info *info; |
|
size_t sz; |
|
|
|
info = (struct filesystem_vol_info *)(rsp->Buffer); |
|
info->VolumeCreationTime = 0; |
|
/* Taking dummy value of serial number*/ |
|
info->SerialNumber = cpu_to_le32(0xbc3ac512); |
|
len = smbConvertToUTF16((__le16 *)info->VolumeLabel, |
|
share->name, PATH_MAX, |
|
conn->local_nls, 0); |
|
len = len * 2; |
|
info->VolumeLabelSize = cpu_to_le32(len); |
|
info->Reserved = 0; |
|
sz = sizeof(struct filesystem_vol_info) - 2 + len; |
|
rsp->OutputBufferLength = cpu_to_le32(sz); |
|
inc_rfc1001_len(rsp_org, sz); |
|
fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_SIZE_INFORMATION: |
|
{ |
|
struct filesystem_info *info; |
|
|
|
info = (struct filesystem_info *)(rsp->Buffer); |
|
info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
|
info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree); |
|
info->SectorsPerAllocationUnit = cpu_to_le32(1); |
|
info->BytesPerSector = cpu_to_le32(stfs.f_bsize); |
|
rsp->OutputBufferLength = cpu_to_le32(24); |
|
inc_rfc1001_len(rsp_org, 24); |
|
fs_infoclass_size = FS_SIZE_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_FULL_SIZE_INFORMATION: |
|
{ |
|
struct smb2_fs_full_size_info *info; |
|
|
|
info = (struct smb2_fs_full_size_info *)(rsp->Buffer); |
|
info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
|
info->CallerAvailableAllocationUnits = |
|
cpu_to_le64(stfs.f_bavail); |
|
info->ActualAvailableAllocationUnits = |
|
cpu_to_le64(stfs.f_bfree); |
|
info->SectorsPerAllocationUnit = cpu_to_le32(1); |
|
info->BytesPerSector = cpu_to_le32(stfs.f_bsize); |
|
rsp->OutputBufferLength = cpu_to_le32(32); |
|
inc_rfc1001_len(rsp_org, 32); |
|
fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_OBJECT_ID_INFORMATION: |
|
{ |
|
struct object_id_info *info; |
|
|
|
info = (struct object_id_info *)(rsp->Buffer); |
|
|
|
if (!user_guest(sess->user)) |
|
memcpy(info->objid, user_passkey(sess->user), 16); |
|
else |
|
memset(info->objid, 0, 16); |
|
|
|
info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC); |
|
info->extended_info.version = cpu_to_le32(1); |
|
info->extended_info.release = cpu_to_le32(1); |
|
info->extended_info.rel_date = 0; |
|
memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0")); |
|
rsp->OutputBufferLength = cpu_to_le32(64); |
|
inc_rfc1001_len(rsp_org, 64); |
|
fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_SECTOR_SIZE_INFORMATION: |
|
{ |
|
struct smb3_fs_ss_info *info; |
|
|
|
info = (struct smb3_fs_ss_info *)(rsp->Buffer); |
|
|
|
info->LogicalBytesPerSector = cpu_to_le32(stfs.f_bsize); |
|
info->PhysicalBytesPerSectorForAtomicity = |
|
cpu_to_le32(stfs.f_bsize); |
|
info->PhysicalBytesPerSectorForPerf = cpu_to_le32(stfs.f_bsize); |
|
info->FSEffPhysicalBytesPerSectorForAtomicity = |
|
cpu_to_le32(stfs.f_bsize); |
|
info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE | |
|
SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE); |
|
info->ByteOffsetForSectorAlignment = 0; |
|
info->ByteOffsetForPartitionAlignment = 0; |
|
rsp->OutputBufferLength = cpu_to_le32(28); |
|
inc_rfc1001_len(rsp_org, 28); |
|
fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_CONTROL_INFORMATION: |
|
{ |
|
/* |
|
* TODO : The current implementation is based on |
|
* test result with win7(NTFS) server. It's need to |
|
* modify this to get valid Quota values |
|
* from Linux kernel |
|
*/ |
|
struct smb2_fs_control_info *info; |
|
|
|
info = (struct smb2_fs_control_info *)(rsp->Buffer); |
|
info->FreeSpaceStartFiltering = 0; |
|
info->FreeSpaceThreshold = 0; |
|
info->FreeSpaceStopFiltering = 0; |
|
info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID); |
|
info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID); |
|
info->Padding = 0; |
|
rsp->OutputBufferLength = cpu_to_le32(48); |
|
inc_rfc1001_len(rsp_org, 48); |
|
fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE; |
|
break; |
|
} |
|
case FS_POSIX_INFORMATION: |
|
{ |
|
struct filesystem_posix_info *info; |
|
|
|
if (!work->tcon->posix_extensions) { |
|
pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
|
rc = -EOPNOTSUPP; |
|
} else { |
|
info = (struct filesystem_posix_info *)(rsp->Buffer); |
|
info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize); |
|
info->BlockSize = cpu_to_le32(stfs.f_bsize); |
|
info->TotalBlocks = cpu_to_le64(stfs.f_blocks); |
|
info->BlocksAvail = cpu_to_le64(stfs.f_bfree); |
|
info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail); |
|
info->TotalFileNodes = cpu_to_le64(stfs.f_files); |
|
info->FreeFileNodes = cpu_to_le64(stfs.f_ffree); |
|
rsp->OutputBufferLength = cpu_to_le32(56); |
|
inc_rfc1001_len(rsp_org, 56); |
|
fs_infoclass_size = FS_POSIX_INFORMATION_SIZE; |
|
} |
|
break; |
|
} |
|
default: |
|
path_put(&path); |
|
return -EOPNOTSUPP; |
|
} |
|
rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
|
rsp, |
|
fs_infoclass_size); |
|
path_put(&path); |
|
return rc; |
|
} |
|
|
|
static int smb2_get_info_sec(struct ksmbd_work *work, |
|
struct smb2_query_info_req *req, |
|
struct smb2_query_info_rsp *rsp, void *rsp_org) |
|
{ |
|
struct ksmbd_file *fp; |
|
struct user_namespace *user_ns; |
|
struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL; |
|
struct smb_fattr fattr = {{0}}; |
|
struct inode *inode; |
|
__u32 secdesclen; |
|
unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; |
|
int addition_info = le32_to_cpu(req->AdditionalInformation); |
|
int rc; |
|
|
|
if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO | |
|
PROTECTED_DACL_SECINFO | |
|
UNPROTECTED_DACL_SECINFO)) { |
|
pr_err("Unsupported addition info: 0x%x)\n", |
|
addition_info); |
|
|
|
pntsd->revision = cpu_to_le16(1); |
|
pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED); |
|
pntsd->osidoffset = 0; |
|
pntsd->gsidoffset = 0; |
|
pntsd->sacloffset = 0; |
|
pntsd->dacloffset = 0; |
|
|
|
secdesclen = sizeof(struct smb_ntsd); |
|
rsp->OutputBufferLength = cpu_to_le32(secdesclen); |
|
inc_rfc1001_len(rsp_org, secdesclen); |
|
|
|
return 0; |
|
} |
|
|
|
if (work->next_smb2_rcv_hdr_off) { |
|
if (!has_file_id(le64_to_cpu(req->VolatileFileId))) { |
|
ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
|
work->compound_fid); |
|
id = work->compound_fid; |
|
pid = work->compound_pfid; |
|
} |
|
} |
|
|
|
if (!has_file_id(id)) { |
|
id = le64_to_cpu(req->VolatileFileId); |
|
pid = le64_to_cpu(req->PersistentFileId); |
|
} |
|
|
|
fp = ksmbd_lookup_fd_slow(work, id, pid); |
|
if (!fp) |
|
return -ENOENT; |
|
|
|
user_ns = file_mnt_user_ns(fp->filp); |
|
inode = file_inode(fp->filp); |
|
ksmbd_acls_fattr(&fattr, user_ns, inode); |
|
|
|
if (test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_ACL_XATTR)) |
|
ksmbd_vfs_get_sd_xattr(work->conn, user_ns, |
|
fp->filp->f_path.dentry, &ppntsd); |
|
|
|
rc = build_sec_desc(user_ns, pntsd, ppntsd, addition_info, |
|
&secdesclen, &fattr); |
|
posix_acl_release(fattr.cf_acls); |
|
posix_acl_release(fattr.cf_dacls); |
|
kfree(ppntsd); |
|
ksmbd_fd_put(work, fp); |
|
if (rc) |
|
return rc; |
|
|
|
rsp->OutputBufferLength = cpu_to_le32(secdesclen); |
|
inc_rfc1001_len(rsp_org, secdesclen); |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_query_info() - handler for smb2 query info command |
|
* @work: smb work containing query info request buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_query_info(struct ksmbd_work *work) |
|
{ |
|
struct smb2_query_info_req *req; |
|
struct smb2_query_info_rsp *rsp, *rsp_org; |
|
int rc = 0; |
|
|
|
rsp_org = work->response_buf; |
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
ksmbd_debug(SMB, "GOT query info request\n"); |
|
|
|
switch (req->InfoType) { |
|
case SMB2_O_INFO_FILE: |
|
ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); |
|
rc = smb2_get_info_file(work, req, rsp, (void *)rsp_org); |
|
break; |
|
case SMB2_O_INFO_FILESYSTEM: |
|
ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n"); |
|
rc = smb2_get_info_filesystem(work, req, rsp, (void *)rsp_org); |
|
break; |
|
case SMB2_O_INFO_SECURITY: |
|
ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); |
|
rc = smb2_get_info_sec(work, req, rsp, (void *)rsp_org); |
|
break; |
|
default: |
|
ksmbd_debug(SMB, "InfoType %d not supported yet\n", |
|
req->InfoType); |
|
rc = -EOPNOTSUPP; |
|
} |
|
|
|
if (rc < 0) { |
|
if (rc == -EACCES) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
else if (rc == -ENOENT) |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
else if (rc == -EIO) |
|
rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; |
|
else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0) |
|
rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; |
|
smb2_set_err_rsp(work); |
|
|
|
ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", |
|
rc); |
|
return rc; |
|
} |
|
rsp->StructureSize = cpu_to_le16(9); |
|
rsp->OutputBufferOffset = cpu_to_le16(72); |
|
inc_rfc1001_len(rsp_org, 8); |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_close_pipe() - handler for closing IPC pipe |
|
* @work: smb work containing close request buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
static noinline int smb2_close_pipe(struct ksmbd_work *work) |
|
{ |
|
u64 id; |
|
struct smb2_close_req *req = work->request_buf; |
|
struct smb2_close_rsp *rsp = work->response_buf; |
|
|
|
id = le64_to_cpu(req->VolatileFileId); |
|
ksmbd_session_rpc_close(work->sess, id); |
|
|
|
rsp->StructureSize = cpu_to_le16(60); |
|
rsp->Flags = 0; |
|
rsp->Reserved = 0; |
|
rsp->CreationTime = 0; |
|
rsp->LastAccessTime = 0; |
|
rsp->LastWriteTime = 0; |
|
rsp->ChangeTime = 0; |
|
rsp->AllocationSize = 0; |
|
rsp->EndOfFile = 0; |
|
rsp->Attributes = 0; |
|
inc_rfc1001_len(rsp, 60); |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_close() - handler for smb2 close file command |
|
* @work: smb work containing close request buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
int smb2_close(struct ksmbd_work *work) |
|
{ |
|
u64 volatile_id = KSMBD_NO_FID; |
|
u64 sess_id; |
|
struct smb2_close_req *req; |
|
struct smb2_close_rsp *rsp; |
|
struct smb2_close_rsp *rsp_org; |
|
struct ksmbd_conn *conn = work->conn; |
|
struct ksmbd_file *fp; |
|
struct inode *inode; |
|
u64 time; |
|
int err = 0; |
|
|
|
rsp_org = work->response_buf; |
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
if (test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_PIPE)) { |
|
ksmbd_debug(SMB, "IPC pipe close request\n"); |
|
return smb2_close_pipe(work); |
|
} |
|
|
|
sess_id = le64_to_cpu(req->hdr.SessionId); |
|
if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) |
|
sess_id = work->compound_sid; |
|
|
|
work->compound_sid = 0; |
|
if (check_session_id(conn, sess_id)) { |
|
work->compound_sid = sess_id; |
|
} else { |
|
rsp->hdr.Status = STATUS_USER_SESSION_DELETED; |
|
if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
err = -EBADF; |
|
goto out; |
|
} |
|
|
|
if (work->next_smb2_rcv_hdr_off && |
|
!has_file_id(le64_to_cpu(req->VolatileFileId))) { |
|
if (!has_file_id(work->compound_fid)) { |
|
/* file already closed, return FILE_CLOSED */ |
|
ksmbd_debug(SMB, "file already closed\n"); |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
err = -EBADF; |
|
goto out; |
|
} else { |
|
ksmbd_debug(SMB, |
|
"Compound request set FID = %llu:%llu\n", |
|
work->compound_fid, |
|
work->compound_pfid); |
|
volatile_id = work->compound_fid; |
|
|
|
/* file closed, stored id is not valid anymore */ |
|
work->compound_fid = KSMBD_NO_FID; |
|
work->compound_pfid = KSMBD_NO_FID; |
|
} |
|
} else { |
|
volatile_id = le64_to_cpu(req->VolatileFileId); |
|
} |
|
ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id); |
|
|
|
rsp->StructureSize = cpu_to_le16(60); |
|
rsp->Reserved = 0; |
|
|
|
if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) { |
|
fp = ksmbd_lookup_fd_fast(work, volatile_id); |
|
if (!fp) { |
|
err = -ENOENT; |
|
goto out; |
|
} |
|
|
|
inode = file_inode(fp->filp); |
|
rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB; |
|
rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 : |
|
cpu_to_le64(inode->i_blocks << 9); |
|
rsp->EndOfFile = cpu_to_le64(inode->i_size); |
|
rsp->Attributes = fp->f_ci->m_fattr; |
|
rsp->CreationTime = cpu_to_le64(fp->create_time); |
|
time = ksmbd_UnixTimeToNT(inode->i_atime); |
|
rsp->LastAccessTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(inode->i_mtime); |
|
rsp->LastWriteTime = cpu_to_le64(time); |
|
time = ksmbd_UnixTimeToNT(inode->i_ctime); |
|
rsp->ChangeTime = cpu_to_le64(time); |
|
ksmbd_fd_put(work, fp); |
|
} else { |
|
rsp->Flags = 0; |
|
rsp->AllocationSize = 0; |
|
rsp->EndOfFile = 0; |
|
rsp->Attributes = 0; |
|
rsp->CreationTime = 0; |
|
rsp->LastAccessTime = 0; |
|
rsp->LastWriteTime = 0; |
|
rsp->ChangeTime = 0; |
|
} |
|
|
|
err = ksmbd_close_fd(work, volatile_id); |
|
out: |
|
if (err) { |
|
if (rsp->hdr.Status == 0) |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
smb2_set_err_rsp(work); |
|
} else { |
|
inc_rfc1001_len(rsp_org, 60); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_echo() - handler for smb2 echo(ping) command |
|
* @work: smb work containing echo request buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
int smb2_echo(struct ksmbd_work *work) |
|
{ |
|
struct smb2_echo_rsp *rsp = work->response_buf; |
|
|
|
rsp->StructureSize = cpu_to_le16(4); |
|
rsp->Reserved = 0; |
|
inc_rfc1001_len(rsp, 4); |
|
return 0; |
|
} |
|
|
|
static int smb2_rename(struct ksmbd_work *work, |
|
struct ksmbd_file *fp, |
|
struct user_namespace *user_ns, |
|
struct smb2_file_rename_info *file_info, |
|
struct nls_table *local_nls) |
|
{ |
|
struct ksmbd_share_config *share = fp->tcon->share_conf; |
|
char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL; |
|
char *pathname = NULL; |
|
struct path path; |
|
bool file_present = true; |
|
int rc; |
|
|
|
ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n"); |
|
pathname = kmalloc(PATH_MAX, GFP_KERNEL); |
|
if (!pathname) |
|
return -ENOMEM; |
|
|
|
abs_oldname = d_path(&fp->filp->f_path, pathname, PATH_MAX); |
|
if (IS_ERR(abs_oldname)) { |
|
rc = -EINVAL; |
|
goto out; |
|
} |
|
old_name = strrchr(abs_oldname, '/'); |
|
if (old_name && old_name[1] != '\0') { |
|
old_name++; |
|
} else { |
|
ksmbd_debug(SMB, "can't get last component in path %s\n", |
|
abs_oldname); |
|
rc = -ENOENT; |
|
goto out; |
|
} |
|
|
|
new_name = smb2_get_name(share, |
|
file_info->FileName, |
|
le32_to_cpu(file_info->FileNameLength), |
|
local_nls); |
|
if (IS_ERR(new_name)) { |
|
rc = PTR_ERR(new_name); |
|
goto out; |
|
} |
|
|
|
if (strchr(new_name, ':')) { |
|
int s_type; |
|
char *xattr_stream_name, *stream_name = NULL; |
|
size_t xattr_stream_size; |
|
int len; |
|
|
|
rc = parse_stream_name(new_name, &stream_name, &s_type); |
|
if (rc < 0) |
|
goto out; |
|
|
|
len = strlen(new_name); |
|
if (len > 0 && new_name[len - 1] != '/') { |
|
pr_err("not allow base filename in rename\n"); |
|
rc = -ESHARE; |
|
goto out; |
|
} |
|
|
|
rc = ksmbd_vfs_xattr_stream_name(stream_name, |
|
&xattr_stream_name, |
|
&xattr_stream_size, |
|
s_type); |
|
if (rc) |
|
goto out; |
|
|
|
rc = ksmbd_vfs_setxattr(user_ns, |
|
fp->filp->f_path.dentry, |
|
xattr_stream_name, |
|
NULL, 0, 0); |
|
if (rc < 0) { |
|
pr_err("failed to store stream name in xattr: %d\n", |
|
rc); |
|
rc = -EINVAL; |
|
goto out; |
|
} |
|
|
|
goto out; |
|
} |
|
|
|
ksmbd_debug(SMB, "new name %s\n", new_name); |
|
rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1); |
|
if (rc) { |
|
if (rc != -ENOENT) |
|
goto out; |
|
file_present = false; |
|
} else { |
|
path_put(&path); |
|
} |
|
|
|
if (ksmbd_share_veto_filename(share, new_name)) { |
|
rc = -ENOENT; |
|
ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name); |
|
goto out; |
|
} |
|
|
|
if (file_info->ReplaceIfExists) { |
|
if (file_present) { |
|
rc = ksmbd_vfs_remove_file(work, new_name); |
|
if (rc) { |
|
if (rc != -ENOTEMPTY) |
|
rc = -EINVAL; |
|
ksmbd_debug(SMB, "cannot delete %s, rc %d\n", |
|
new_name, rc); |
|
goto out; |
|
} |
|
} |
|
} else { |
|
if (file_present && |
|
strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) { |
|
rc = -EEXIST; |
|
ksmbd_debug(SMB, |
|
"cannot rename already existing file\n"); |
|
goto out; |
|
} |
|
} |
|
|
|
rc = ksmbd_vfs_fp_rename(work, fp, new_name); |
|
out: |
|
kfree(pathname); |
|
if (!IS_ERR(new_name)) |
|
kfree(new_name); |
|
return rc; |
|
} |
|
|
|
static int smb2_create_link(struct ksmbd_work *work, |
|
struct ksmbd_share_config *share, |
|
struct smb2_file_link_info *file_info, |
|
struct file *filp, |
|
struct nls_table *local_nls) |
|
{ |
|
char *link_name = NULL, *target_name = NULL, *pathname = NULL; |
|
struct path path; |
|
bool file_present = true; |
|
int rc; |
|
|
|
ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n"); |
|
pathname = kmalloc(PATH_MAX, GFP_KERNEL); |
|
if (!pathname) |
|
return -ENOMEM; |
|
|
|
link_name = smb2_get_name(share, |
|
file_info->FileName, |
|
le32_to_cpu(file_info->FileNameLength), |
|
local_nls); |
|
if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) { |
|
rc = -EINVAL; |
|
goto out; |
|
} |
|
|
|
ksmbd_debug(SMB, "link name is %s\n", link_name); |
|
target_name = d_path(&filp->f_path, pathname, PATH_MAX); |
|
if (IS_ERR(target_name)) { |
|
rc = -EINVAL; |
|
goto out; |
|
} |
|
|
|
ksmbd_debug(SMB, "target name is %s\n", target_name); |
|
rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0); |
|
if (rc) { |
|
if (rc != -ENOENT) |
|
goto out; |
|
file_present = false; |
|
} else { |
|
path_put(&path); |
|
} |
|
|
|
if (file_info->ReplaceIfExists) { |
|
if (file_present) { |
|
rc = ksmbd_vfs_remove_file(work, link_name); |
|
if (rc) { |
|
rc = -EINVAL; |
|
ksmbd_debug(SMB, "cannot delete %s\n", |
|
link_name); |
|
goto out; |
|
} |
|
} |
|
} else { |
|
if (file_present) { |
|
rc = -EEXIST; |
|
ksmbd_debug(SMB, "link already exists\n"); |
|
goto out; |
|
} |
|
} |
|
|
|
rc = ksmbd_vfs_link(work, target_name, link_name); |
|
if (rc) |
|
rc = -EINVAL; |
|
out: |
|
if (!IS_ERR(link_name)) |
|
kfree(link_name); |
|
kfree(pathname); |
|
return rc; |
|
} |
|
|
|
static int set_file_basic_info(struct ksmbd_file *fp, char *buf, |
|
struct ksmbd_share_config *share) |
|
{ |
|
struct smb2_file_all_info *file_info; |
|
struct iattr attrs; |
|
struct timespec64 ctime; |
|
struct file *filp; |
|
struct inode *inode; |
|
struct user_namespace *user_ns; |
|
int rc = 0; |
|
|
|
if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE)) |
|
return -EACCES; |
|
|
|
file_info = (struct smb2_file_all_info *)buf; |
|
attrs.ia_valid = 0; |
|
filp = fp->filp; |
|
inode = file_inode(filp); |
|
user_ns = file_mnt_user_ns(filp); |
|
|
|
if (file_info->CreationTime) |
|
fp->create_time = le64_to_cpu(file_info->CreationTime); |
|
|
|
if (file_info->LastAccessTime) { |
|
attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime); |
|
attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
|
} |
|
|
|
if (file_info->ChangeTime) { |
|
attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime); |
|
ctime = attrs.ia_ctime; |
|
attrs.ia_valid |= ATTR_CTIME; |
|
} else { |
|
ctime = inode->i_ctime; |
|
} |
|
|
|
if (file_info->LastWriteTime) { |
|
attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime); |
|
attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
|
} |
|
|
|
if (file_info->Attributes) { |
|
if (!S_ISDIR(inode->i_mode) && |
|
file_info->Attributes & ATTR_DIRECTORY_LE) { |
|
pr_err("can't change a file to a directory\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == ATTR_NORMAL_LE)) |
|
fp->f_ci->m_fattr = file_info->Attributes | |
|
(fp->f_ci->m_fattr & ATTR_DIRECTORY_LE); |
|
} |
|
|
|
if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) && |
|
(file_info->CreationTime || file_info->Attributes)) { |
|
struct xattr_dos_attrib da = {0}; |
|
|
|
da.version = 4; |
|
da.itime = fp->itime; |
|
da.create_time = fp->create_time; |
|
da.attr = le32_to_cpu(fp->f_ci->m_fattr); |
|
da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | |
|
XATTR_DOSINFO_ITIME; |
|
|
|
rc = ksmbd_vfs_set_dos_attrib_xattr(user_ns, |
|
filp->f_path.dentry, &da); |
|
if (rc) |
|
ksmbd_debug(SMB, |
|
"failed to restore file attribute in EA\n"); |
|
rc = 0; |
|
} |
|
|
|
if (attrs.ia_valid) { |
|
struct dentry *dentry = filp->f_path.dentry; |
|
struct inode *inode = d_inode(dentry); |
|
|
|
if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
|
return -EACCES; |
|
|
|
inode_lock(inode); |
|
rc = notify_change(user_ns, dentry, &attrs, NULL); |
|
if (!rc) { |
|
inode->i_ctime = ctime; |
|
mark_inode_dirty(inode); |
|
} |
|
inode_unlock(inode); |
|
} |
|
return rc; |
|
} |
|
|
|
static int set_file_allocation_info(struct ksmbd_work *work, |
|
struct ksmbd_file *fp, char *buf) |
|
{ |
|
/* |
|
* TODO : It's working fine only when store dos attributes |
|
* is not yes. need to implement a logic which works |
|
* properly with any smb.conf option |
|
*/ |
|
|
|
struct smb2_file_alloc_info *file_alloc_info; |
|
loff_t alloc_blks; |
|
struct inode *inode; |
|
int rc; |
|
|
|
if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
|
return -EACCES; |
|
|
|
file_alloc_info = (struct smb2_file_alloc_info *)buf; |
|
alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9; |
|
inode = file_inode(fp->filp); |
|
|
|
if (alloc_blks > inode->i_blocks) { |
|
smb_break_all_levII_oplock(work, fp, 1); |
|
rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, |
|
alloc_blks * 512); |
|
if (rc && rc != -EOPNOTSUPP) { |
|
pr_err("vfs_fallocate is failed : %d\n", rc); |
|
return rc; |
|
} |
|
} else if (alloc_blks < inode->i_blocks) { |
|
loff_t size; |
|
|
|
/* |
|
* Allocation size could be smaller than original one |
|
* which means allocated blocks in file should be |
|
* deallocated. use truncate to cut out it, but inode |
|
* size is also updated with truncate offset. |
|
* inode size is retained by backup inode size. |
|
*/ |
|
size = i_size_read(inode); |
|
rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512); |
|
if (rc) { |
|
pr_err("truncate failed! filename : %s, err %d\n", |
|
fp->filename, rc); |
|
return rc; |
|
} |
|
if (size < alloc_blks * 512) |
|
i_size_write(inode, size); |
|
} |
|
return 0; |
|
} |
|
|
|
static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
|
char *buf) |
|
{ |
|
struct smb2_file_eof_info *file_eof_info; |
|
loff_t newsize; |
|
struct inode *inode; |
|
int rc; |
|
|
|
if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
|
return -EACCES; |
|
|
|
file_eof_info = (struct smb2_file_eof_info *)buf; |
|
newsize = le64_to_cpu(file_eof_info->EndOfFile); |
|
inode = file_inode(fp->filp); |
|
|
|
/* |
|
* If FILE_END_OF_FILE_INFORMATION of set_info_file is called |
|
* on FAT32 shared device, truncate execution time is too long |
|
* and network error could cause from windows client. because |
|
* truncate of some filesystem like FAT32 fill zero data in |
|
* truncated range. |
|
*/ |
|
if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) { |
|
ksmbd_debug(SMB, "filename : %s truncated to newsize %lld\n", |
|
fp->filename, newsize); |
|
rc = ksmbd_vfs_truncate(work, fp, newsize); |
|
if (rc) { |
|
ksmbd_debug(SMB, "truncate failed! filename : %s err %d\n", |
|
fp->filename, rc); |
|
if (rc != -EAGAIN) |
|
rc = -EBADF; |
|
return rc; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
|
char *buf) |
|
{ |
|
struct user_namespace *user_ns; |
|
struct ksmbd_file *parent_fp; |
|
struct dentry *parent; |
|
struct dentry *dentry = fp->filp->f_path.dentry; |
|
int ret; |
|
|
|
if (!(fp->daccess & FILE_DELETE_LE)) { |
|
pr_err("no right to delete : 0x%x\n", fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
user_ns = file_mnt_user_ns(fp->filp); |
|
if (ksmbd_stream_fd(fp)) |
|
goto next; |
|
|
|
parent = dget_parent(dentry); |
|
ret = ksmbd_vfs_lock_parent(user_ns, parent, dentry); |
|
if (ret) { |
|
dput(parent); |
|
return ret; |
|
} |
|
|
|
parent_fp = ksmbd_lookup_fd_inode(d_inode(parent)); |
|
inode_unlock(d_inode(parent)); |
|
dput(parent); |
|
|
|
if (parent_fp) { |
|
if (parent_fp->daccess & FILE_DELETE_LE) { |
|
pr_err("parent dir is opened with delete access\n"); |
|
return -ESHARE; |
|
} |
|
} |
|
next: |
|
return smb2_rename(work, fp, user_ns, |
|
(struct smb2_file_rename_info *)buf, |
|
work->sess->conn->local_nls); |
|
} |
|
|
|
static int set_file_disposition_info(struct ksmbd_file *fp, char *buf) |
|
{ |
|
struct smb2_file_disposition_info *file_info; |
|
struct inode *inode; |
|
|
|
if (!(fp->daccess & FILE_DELETE_LE)) { |
|
pr_err("no right to delete : 0x%x\n", fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
inode = file_inode(fp->filp); |
|
file_info = (struct smb2_file_disposition_info *)buf; |
|
if (file_info->DeletePending) { |
|
if (S_ISDIR(inode->i_mode) && |
|
ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY) |
|
return -EBUSY; |
|
ksmbd_set_inode_pending_delete(fp); |
|
} else { |
|
ksmbd_clear_inode_pending_delete(fp); |
|
} |
|
return 0; |
|
} |
|
|
|
static int set_file_position_info(struct ksmbd_file *fp, char *buf) |
|
{ |
|
struct smb2_file_pos_info *file_info; |
|
loff_t current_byte_offset; |
|
unsigned long sector_size; |
|
struct inode *inode; |
|
|
|
inode = file_inode(fp->filp); |
|
file_info = (struct smb2_file_pos_info *)buf; |
|
current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset); |
|
sector_size = inode->i_sb->s_blocksize; |
|
|
|
if (current_byte_offset < 0 || |
|
(fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE && |
|
current_byte_offset & (sector_size - 1))) { |
|
pr_err("CurrentByteOffset is not valid : %llu\n", |
|
current_byte_offset); |
|
return -EINVAL; |
|
} |
|
|
|
fp->filp->f_pos = current_byte_offset; |
|
return 0; |
|
} |
|
|
|
static int set_file_mode_info(struct ksmbd_file *fp, char *buf) |
|
{ |
|
struct smb2_file_mode_info *file_info; |
|
__le32 mode; |
|
|
|
file_info = (struct smb2_file_mode_info *)buf; |
|
mode = file_info->Mode; |
|
|
|
if ((mode & ~FILE_MODE_INFO_MASK) || |
|
(mode & FILE_SYNCHRONOUS_IO_ALERT_LE && |
|
mode & FILE_SYNCHRONOUS_IO_NONALERT_LE)) { |
|
pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode)); |
|
return -EINVAL; |
|
} |
|
|
|
/* |
|
* TODO : need to implement consideration for |
|
* FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT |
|
*/ |
|
ksmbd_vfs_set_fadvise(fp->filp, mode); |
|
fp->coption = mode; |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_set_info_file() - handler for smb2 set info command |
|
* @work: smb work containing set info command buffer |
|
* @fp: ksmbd_file pointer |
|
* @info_class: smb2 set info class |
|
* @share: ksmbd_share_config pointer |
|
* |
|
* Return: 0 on success, otherwise error |
|
* TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH |
|
*/ |
|
static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp, |
|
int info_class, char *buf, |
|
struct ksmbd_share_config *share) |
|
{ |
|
switch (info_class) { |
|
case FILE_BASIC_INFORMATION: |
|
return set_file_basic_info(fp, buf, share); |
|
|
|
case FILE_ALLOCATION_INFORMATION: |
|
return set_file_allocation_info(work, fp, buf); |
|
|
|
case FILE_END_OF_FILE_INFORMATION: |
|
return set_end_of_file_info(work, fp, buf); |
|
|
|
case FILE_RENAME_INFORMATION: |
|
if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
ksmbd_debug(SMB, |
|
"User does not have write permission\n"); |
|
return -EACCES; |
|
} |
|
return set_rename_info(work, fp, buf); |
|
|
|
case FILE_LINK_INFORMATION: |
|
return smb2_create_link(work, work->tcon->share_conf, |
|
(struct smb2_file_link_info *)buf, fp->filp, |
|
work->sess->conn->local_nls); |
|
|
|
case FILE_DISPOSITION_INFORMATION: |
|
if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
ksmbd_debug(SMB, |
|
"User does not have write permission\n"); |
|
return -EACCES; |
|
} |
|
return set_file_disposition_info(fp, buf); |
|
|
|
case FILE_FULL_EA_INFORMATION: |
|
{ |
|
if (!(fp->daccess & FILE_WRITE_EA_LE)) { |
|
pr_err("Not permitted to write ext attr: 0x%x\n", |
|
fp->daccess); |
|
return -EACCES; |
|
} |
|
|
|
return smb2_set_ea((struct smb2_ea_info *)buf, |
|
&fp->filp->f_path); |
|
} |
|
|
|
case FILE_POSITION_INFORMATION: |
|
return set_file_position_info(fp, buf); |
|
|
|
case FILE_MODE_INFORMATION: |
|
return set_file_mode_info(fp, buf); |
|
} |
|
|
|
pr_err("Unimplemented Fileinfoclass :%d\n", info_class); |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info, |
|
char *buffer, int buf_len) |
|
{ |
|
struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer; |
|
|
|
fp->saccess |= FILE_SHARE_DELETE_LE; |
|
|
|
return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd, |
|
buf_len, false); |
|
} |
|
|
|
/** |
|
* smb2_set_info() - handler for smb2 set info command handler |
|
* @work: smb work containing set info request buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_set_info(struct ksmbd_work *work) |
|
{ |
|
struct smb2_set_info_req *req; |
|
struct smb2_set_info_rsp *rsp, *rsp_org; |
|
struct ksmbd_file *fp; |
|
int rc = 0; |
|
unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; |
|
|
|
ksmbd_debug(SMB, "Received set info request\n"); |
|
|
|
rsp_org = work->response_buf; |
|
if (work->next_smb2_rcv_hdr_off) { |
|
req = ksmbd_req_buf_next(work); |
|
rsp = ksmbd_resp_buf_next(work); |
|
if (!has_file_id(le64_to_cpu(req->VolatileFileId))) { |
|
ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
|
work->compound_fid); |
|
id = work->compound_fid; |
|
pid = work->compound_pfid; |
|
} |
|
} else { |
|
req = work->request_buf; |
|
rsp = work->response_buf; |
|
} |
|
|
|
if (!has_file_id(id)) { |
|
id = le64_to_cpu(req->VolatileFileId); |
|
pid = le64_to_cpu(req->PersistentFileId); |
|
} |
|
|
|
fp = ksmbd_lookup_fd_slow(work, id, pid); |
|
if (!fp) { |
|
ksmbd_debug(SMB, "Invalid id for close: %u\n", id); |
|
rc = -ENOENT; |
|
goto err_out; |
|
} |
|
|
|
switch (req->InfoType) { |
|
case SMB2_O_INFO_FILE: |
|
ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); |
|
rc = smb2_set_info_file(work, fp, req->FileInfoClass, |
|
req->Buffer, work->tcon->share_conf); |
|
break; |
|
case SMB2_O_INFO_SECURITY: |
|
ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); |
|
if (ksmbd_override_fsids(work)) { |
|
rc = -ENOMEM; |
|
goto err_out; |
|
} |
|
rc = smb2_set_info_sec(fp, |
|
le32_to_cpu(req->AdditionalInformation), |
|
req->Buffer, |
|
le32_to_cpu(req->BufferLength)); |
|
ksmbd_revert_fsids(work); |
|
break; |
|
default: |
|
rc = -EOPNOTSUPP; |
|
} |
|
|
|
if (rc < 0) |
|
goto err_out; |
|
|
|
rsp->StructureSize = cpu_to_le16(2); |
|
inc_rfc1001_len(rsp_org, 2); |
|
ksmbd_fd_put(work, fp); |
|
return 0; |
|
|
|
err_out: |
|
if (rc == -EACCES || rc == -EPERM || rc == -EXDEV) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
else if (rc == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else if (rc == -ESHARE) |
|
rsp->hdr.Status = STATUS_SHARING_VIOLATION; |
|
else if (rc == -ENOENT) |
|
rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; |
|
else if (rc == -EBUSY || rc == -ENOTEMPTY) |
|
rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY; |
|
else if (rc == -EAGAIN) |
|
rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; |
|
else if (rc == -EBADF || rc == -ESTALE) |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
else if (rc == -EEXIST) |
|
rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; |
|
else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP) |
|
rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; |
|
smb2_set_err_rsp(work); |
|
ksmbd_fd_put(work, fp); |
|
ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc); |
|
return rc; |
|
} |
|
|
|
/** |
|
* smb2_read_pipe() - handler for smb2 read from IPC pipe |
|
* @work: smb work containing read IPC pipe command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
static noinline int smb2_read_pipe(struct ksmbd_work *work) |
|
{ |
|
int nbytes = 0, err; |
|
u64 id; |
|
struct ksmbd_rpc_command *rpc_resp; |
|
struct smb2_read_req *req = work->request_buf; |
|
struct smb2_read_rsp *rsp = work->response_buf; |
|
|
|
id = le64_to_cpu(req->VolatileFileId); |
|
|
|
inc_rfc1001_len(rsp, 16); |
|
rpc_resp = ksmbd_rpc_read(work->sess, id); |
|
if (rpc_resp) { |
|
if (rpc_resp->flags != KSMBD_RPC_OK) { |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
work->aux_payload_buf = |
|
kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO); |
|
if (!work->aux_payload_buf) { |
|
err = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
memcpy(work->aux_payload_buf, rpc_resp->payload, |
|
rpc_resp->payload_sz); |
|
|
|
nbytes = rpc_resp->payload_sz; |
|
work->resp_hdr_sz = get_rfc1002_len(rsp) + 4; |
|
work->aux_payload_sz = nbytes; |
|
kvfree(rpc_resp); |
|
} |
|
|
|
rsp->StructureSize = cpu_to_le16(17); |
|
rsp->DataOffset = 80; |
|
rsp->Reserved = 0; |
|
rsp->DataLength = cpu_to_le32(nbytes); |
|
rsp->DataRemaining = 0; |
|
rsp->Reserved2 = 0; |
|
inc_rfc1001_len(rsp, nbytes); |
|
return 0; |
|
|
|
out: |
|
rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; |
|
smb2_set_err_rsp(work); |
|
kvfree(rpc_resp); |
|
return err; |
|
} |
|
|
|
static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work, |
|
struct smb2_read_req *req, void *data_buf, |
|
size_t length) |
|
{ |
|
struct smb2_buffer_desc_v1 *desc = |
|
(struct smb2_buffer_desc_v1 *)&req->Buffer[0]; |
|
int err; |
|
|
|
if (work->conn->dialect == SMB30_PROT_ID && |
|
req->Channel != SMB2_CHANNEL_RDMA_V1) |
|
return -EINVAL; |
|
|
|
if (req->ReadChannelInfoOffset == 0 || |
|
le16_to_cpu(req->ReadChannelInfoLength) < sizeof(*desc)) |
|
return -EINVAL; |
|
|
|
work->need_invalidate_rkey = |
|
(req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE); |
|
work->remote_key = le32_to_cpu(desc->token); |
|
|
|
err = ksmbd_conn_rdma_write(work->conn, data_buf, length, |
|
le32_to_cpu(desc->token), |
|
le64_to_cpu(desc->offset), |
|
le32_to_cpu(desc->length)); |
|
if (err) |
|
return err; |
|
|
|
return length; |
|
} |
|
|
|
/** |
|
* smb2_read() - handler for smb2 read from file |
|
* @work: smb work containing read command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_read(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_read_req *req; |
|
struct smb2_read_rsp *rsp, *rsp_org; |
|
struct ksmbd_file *fp; |
|
loff_t offset; |
|
size_t length, mincount; |
|
ssize_t nbytes = 0, remain_bytes = 0; |
|
int err = 0; |
|
|
|
rsp_org = work->response_buf; |
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
if (test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_PIPE)) { |
|
ksmbd_debug(SMB, "IPC pipe read request\n"); |
|
return smb2_read_pipe(work); |
|
} |
|
|
|
fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId), |
|
le64_to_cpu(req->PersistentFileId)); |
|
if (!fp) { |
|
err = -ENOENT; |
|
goto out; |
|
} |
|
|
|
if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { |
|
pr_err("Not permitted to read : 0x%x\n", fp->daccess); |
|
err = -EACCES; |
|
goto out; |
|
} |
|
|
|
offset = le64_to_cpu(req->Offset); |
|
length = le32_to_cpu(req->Length); |
|
mincount = le32_to_cpu(req->MinimumCount); |
|
|
|
if (length > conn->vals->max_read_size) { |
|
ksmbd_debug(SMB, "limiting read size to max size(%u)\n", |
|
conn->vals->max_read_size); |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n", |
|
fp->filp->f_path.dentry, offset, length); |
|
|
|
work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
|
if (!work->aux_payload_buf) { |
|
err = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
nbytes = ksmbd_vfs_read(work, fp, length, &offset); |
|
if (nbytes < 0) { |
|
err = nbytes; |
|
goto out; |
|
} |
|
|
|
if ((nbytes == 0 && length != 0) || nbytes < mincount) { |
|
kvfree(work->aux_payload_buf); |
|
work->aux_payload_buf = NULL; |
|
rsp->hdr.Status = STATUS_END_OF_FILE; |
|
smb2_set_err_rsp(work); |
|
ksmbd_fd_put(work, fp); |
|
return 0; |
|
} |
|
|
|
ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n", |
|
nbytes, offset, mincount); |
|
|
|
if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE || |
|
req->Channel == SMB2_CHANNEL_RDMA_V1) { |
|
/* write data to the client using rdma channel */ |
|
remain_bytes = smb2_read_rdma_channel(work, req, |
|
work->aux_payload_buf, |
|
nbytes); |
|
kvfree(work->aux_payload_buf); |
|
work->aux_payload_buf = NULL; |
|
|
|
nbytes = 0; |
|
if (remain_bytes < 0) { |
|
err = (int)remain_bytes; |
|
goto out; |
|
} |
|
} |
|
|
|
rsp->StructureSize = cpu_to_le16(17); |
|
rsp->DataOffset = 80; |
|
rsp->Reserved = 0; |
|
rsp->DataLength = cpu_to_le32(nbytes); |
|
rsp->DataRemaining = cpu_to_le32(remain_bytes); |
|
rsp->Reserved2 = 0; |
|
inc_rfc1001_len(rsp_org, 16); |
|
work->resp_hdr_sz = get_rfc1002_len(rsp_org) + 4; |
|
work->aux_payload_sz = nbytes; |
|
inc_rfc1001_len(rsp_org, nbytes); |
|
ksmbd_fd_put(work, fp); |
|
return 0; |
|
|
|
out: |
|
if (err) { |
|
if (err == -EISDIR) |
|
rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST; |
|
else if (err == -EAGAIN) |
|
rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; |
|
else if (err == -ENOENT) |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
else if (err == -EACCES) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
else if (err == -ESHARE) |
|
rsp->hdr.Status = STATUS_SHARING_VIOLATION; |
|
else if (err == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
|
|
smb2_set_err_rsp(work); |
|
} |
|
ksmbd_fd_put(work, fp); |
|
return err; |
|
} |
|
|
|
/** |
|
* smb2_write_pipe() - handler for smb2 write on IPC pipe |
|
* @work: smb work containing write IPC pipe command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
static noinline int smb2_write_pipe(struct ksmbd_work *work) |
|
{ |
|
struct smb2_write_req *req = work->request_buf; |
|
struct smb2_write_rsp *rsp = work->response_buf; |
|
struct ksmbd_rpc_command *rpc_resp; |
|
u64 id = 0; |
|
int err = 0, ret = 0; |
|
char *data_buf; |
|
size_t length; |
|
|
|
length = le32_to_cpu(req->Length); |
|
id = le64_to_cpu(req->VolatileFileId); |
|
|
|
if (le16_to_cpu(req->DataOffset) == |
|
(offsetof(struct smb2_write_req, Buffer) - 4)) { |
|
data_buf = (char *)&req->Buffer[0]; |
|
} else { |
|
if ((le16_to_cpu(req->DataOffset) > get_rfc1002_len(req)) || |
|
(le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req))) { |
|
pr_err("invalid write data offset %u, smb_len %u\n", |
|
le16_to_cpu(req->DataOffset), |
|
get_rfc1002_len(req)); |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
data_buf = (char *)(((char *)&req->hdr.ProtocolId) + |
|
le16_to_cpu(req->DataOffset)); |
|
} |
|
|
|
rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length); |
|
if (rpc_resp) { |
|
if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { |
|
rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
|
kvfree(rpc_resp); |
|
smb2_set_err_rsp(work); |
|
return -EOPNOTSUPP; |
|
} |
|
if (rpc_resp->flags != KSMBD_RPC_OK) { |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
smb2_set_err_rsp(work); |
|
kvfree(rpc_resp); |
|
return ret; |
|
} |
|
kvfree(rpc_resp); |
|
} |
|
|
|
rsp->StructureSize = cpu_to_le16(17); |
|
rsp->DataOffset = 0; |
|
rsp->Reserved = 0; |
|
rsp->DataLength = cpu_to_le32(length); |
|
rsp->DataRemaining = 0; |
|
rsp->Reserved2 = 0; |
|
inc_rfc1001_len(rsp, 16); |
|
return 0; |
|
out: |
|
if (err) { |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
smb2_set_err_rsp(work); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work, |
|
struct smb2_write_req *req, |
|
struct ksmbd_file *fp, |
|
loff_t offset, size_t length, bool sync) |
|
{ |
|
struct smb2_buffer_desc_v1 *desc; |
|
char *data_buf; |
|
int ret; |
|
ssize_t nbytes; |
|
|
|
desc = (struct smb2_buffer_desc_v1 *)&req->Buffer[0]; |
|
|
|
if (work->conn->dialect == SMB30_PROT_ID && |
|
req->Channel != SMB2_CHANNEL_RDMA_V1) |
|
return -EINVAL; |
|
|
|
if (req->Length != 0 || req->DataOffset != 0) |
|
return -EINVAL; |
|
|
|
if (req->WriteChannelInfoOffset == 0 || |
|
le16_to_cpu(req->WriteChannelInfoLength) < sizeof(*desc)) |
|
return -EINVAL; |
|
|
|
work->need_invalidate_rkey = |
|
(req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE); |
|
work->remote_key = le32_to_cpu(desc->token); |
|
|
|
data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
|
if (!data_buf) |
|
return -ENOMEM; |
|
|
|
ret = ksmbd_conn_rdma_read(work->conn, data_buf, length, |
|
le32_to_cpu(desc->token), |
|
le64_to_cpu(desc->offset), |
|
le32_to_cpu(desc->length)); |
|
if (ret < 0) { |
|
kvfree(data_buf); |
|
return ret; |
|
} |
|
|
|
ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes); |
|
kvfree(data_buf); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return nbytes; |
|
} |
|
|
|
/** |
|
* smb2_write() - handler for smb2 write from file |
|
* @work: smb work containing write command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_write(struct ksmbd_work *work) |
|
{ |
|
struct smb2_write_req *req; |
|
struct smb2_write_rsp *rsp, *rsp_org; |
|
struct ksmbd_file *fp = NULL; |
|
loff_t offset; |
|
size_t length; |
|
ssize_t nbytes; |
|
char *data_buf; |
|
bool writethrough = false; |
|
int err = 0; |
|
|
|
rsp_org = work->response_buf; |
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) { |
|
ksmbd_debug(SMB, "IPC pipe write request\n"); |
|
return smb2_write_pipe(work); |
|
} |
|
|
|
if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
ksmbd_debug(SMB, "User does not have write permission\n"); |
|
err = -EACCES; |
|
goto out; |
|
} |
|
|
|
fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId), |
|
le64_to_cpu(req->PersistentFileId)); |
|
if (!fp) { |
|
err = -ENOENT; |
|
goto out; |
|
} |
|
|
|
if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { |
|
pr_err("Not permitted to write : 0x%x\n", fp->daccess); |
|
err = -EACCES; |
|
goto out; |
|
} |
|
|
|
offset = le64_to_cpu(req->Offset); |
|
length = le32_to_cpu(req->Length); |
|
|
|
if (length > work->conn->vals->max_write_size) { |
|
ksmbd_debug(SMB, "limiting write size to max size(%u)\n", |
|
work->conn->vals->max_write_size); |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH) |
|
writethrough = true; |
|
|
|
if (req->Channel != SMB2_CHANNEL_RDMA_V1 && |
|
req->Channel != SMB2_CHANNEL_RDMA_V1_INVALIDATE) { |
|
if (le16_to_cpu(req->DataOffset) == |
|
(offsetof(struct smb2_write_req, Buffer) - 4)) { |
|
data_buf = (char *)&req->Buffer[0]; |
|
} else { |
|
if ((le16_to_cpu(req->DataOffset) > get_rfc1002_len(req)) || |
|
(le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req))) { |
|
pr_err("invalid write data offset %u, smb_len %u\n", |
|
le16_to_cpu(req->DataOffset), |
|
get_rfc1002_len(req)); |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
data_buf = (char *)(((char *)&req->hdr.ProtocolId) + |
|
le16_to_cpu(req->DataOffset)); |
|
} |
|
|
|
ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags)); |
|
if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH) |
|
writethrough = true; |
|
|
|
ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n", |
|
fp->filp->f_path.dentry, offset, length); |
|
err = ksmbd_vfs_write(work, fp, data_buf, length, &offset, |
|
writethrough, &nbytes); |
|
if (err < 0) |
|
goto out; |
|
} else { |
|
/* read data from the client using rdma channel, and |
|
* write the data. |
|
*/ |
|
nbytes = smb2_write_rdma_channel(work, req, fp, offset, |
|
le32_to_cpu(req->RemainingBytes), |
|
writethrough); |
|
if (nbytes < 0) { |
|
err = (int)nbytes; |
|
goto out; |
|
} |
|
} |
|
|
|
rsp->StructureSize = cpu_to_le16(17); |
|
rsp->DataOffset = 0; |
|
rsp->Reserved = 0; |
|
rsp->DataLength = cpu_to_le32(nbytes); |
|
rsp->DataRemaining = 0; |
|
rsp->Reserved2 = 0; |
|
inc_rfc1001_len(rsp_org, 16); |
|
ksmbd_fd_put(work, fp); |
|
return 0; |
|
|
|
out: |
|
if (err == -EAGAIN) |
|
rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; |
|
else if (err == -ENOSPC || err == -EFBIG) |
|
rsp->hdr.Status = STATUS_DISK_FULL; |
|
else if (err == -ENOENT) |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
else if (err == -EACCES) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
else if (err == -ESHARE) |
|
rsp->hdr.Status = STATUS_SHARING_VIOLATION; |
|
else if (err == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
|
|
smb2_set_err_rsp(work); |
|
ksmbd_fd_put(work, fp); |
|
return err; |
|
} |
|
|
|
/** |
|
* smb2_flush() - handler for smb2 flush file - fsync |
|
* @work: smb work containing flush command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_flush(struct ksmbd_work *work) |
|
{ |
|
struct smb2_flush_req *req; |
|
struct smb2_flush_rsp *rsp, *rsp_org; |
|
int err; |
|
|
|
rsp_org = work->response_buf; |
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", |
|
le64_to_cpu(req->VolatileFileId)); |
|
|
|
err = ksmbd_vfs_fsync(work, |
|
le64_to_cpu(req->VolatileFileId), |
|
le64_to_cpu(req->PersistentFileId)); |
|
if (err) |
|
goto out; |
|
|
|
rsp->StructureSize = cpu_to_le16(4); |
|
rsp->Reserved = 0; |
|
inc_rfc1001_len(rsp_org, 4); |
|
return 0; |
|
|
|
out: |
|
if (err) { |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
smb2_set_err_rsp(work); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
/** |
|
* smb2_cancel() - handler for smb2 cancel command |
|
* @work: smb work containing cancel command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_cancel(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_hdr *hdr = work->request_buf; |
|
struct smb2_hdr *chdr; |
|
struct ksmbd_work *cancel_work = NULL; |
|
int canceled = 0; |
|
struct list_head *command_list; |
|
|
|
ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n", |
|
hdr->MessageId, hdr->Flags); |
|
|
|
if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) { |
|
command_list = &conn->async_requests; |
|
|
|
spin_lock(&conn->request_lock); |
|
list_for_each_entry(cancel_work, command_list, |
|
async_request_entry) { |
|
chdr = cancel_work->request_buf; |
|
|
|
if (cancel_work->async_id != |
|
le64_to_cpu(hdr->Id.AsyncId)) |
|
continue; |
|
|
|
ksmbd_debug(SMB, |
|
"smb2 with AsyncId %llu cancelled command = 0x%x\n", |
|
le64_to_cpu(hdr->Id.AsyncId), |
|
le16_to_cpu(chdr->Command)); |
|
canceled = 1; |
|
break; |
|
} |
|
spin_unlock(&conn->request_lock); |
|
} else { |
|
command_list = &conn->requests; |
|
|
|
spin_lock(&conn->request_lock); |
|
list_for_each_entry(cancel_work, command_list, request_entry) { |
|
chdr = cancel_work->request_buf; |
|
|
|
if (chdr->MessageId != hdr->MessageId || |
|
cancel_work == work) |
|
continue; |
|
|
|
ksmbd_debug(SMB, |
|
"smb2 with mid %llu cancelled command = 0x%x\n", |
|
le64_to_cpu(hdr->MessageId), |
|
le16_to_cpu(chdr->Command)); |
|
canceled = 1; |
|
break; |
|
} |
|
spin_unlock(&conn->request_lock); |
|
} |
|
|
|
if (canceled) { |
|
cancel_work->state = KSMBD_WORK_CANCELLED; |
|
if (cancel_work->cancel_fn) |
|
cancel_work->cancel_fn(cancel_work->cancel_argv); |
|
} |
|
|
|
/* For SMB2_CANCEL command itself send no response*/ |
|
work->send_no_response = 1; |
|
return 0; |
|
} |
|
|
|
struct file_lock *smb_flock_init(struct file *f) |
|
{ |
|
struct file_lock *fl; |
|
|
|
fl = locks_alloc_lock(); |
|
if (!fl) |
|
goto out; |
|
|
|
locks_init_lock(fl); |
|
|
|
fl->fl_owner = f; |
|
fl->fl_pid = current->tgid; |
|
fl->fl_file = f; |
|
fl->fl_flags = FL_POSIX; |
|
fl->fl_ops = NULL; |
|
fl->fl_lmops = NULL; |
|
|
|
out: |
|
return fl; |
|
} |
|
|
|
static int smb2_set_flock_flags(struct file_lock *flock, int flags) |
|
{ |
|
int cmd = -EINVAL; |
|
|
|
/* Checking for wrong flag combination during lock request*/ |
|
switch (flags) { |
|
case SMB2_LOCKFLAG_SHARED: |
|
ksmbd_debug(SMB, "received shared request\n"); |
|
cmd = F_SETLKW; |
|
flock->fl_type = F_RDLCK; |
|
flock->fl_flags |= FL_SLEEP; |
|
break; |
|
case SMB2_LOCKFLAG_EXCLUSIVE: |
|
ksmbd_debug(SMB, "received exclusive request\n"); |
|
cmd = F_SETLKW; |
|
flock->fl_type = F_WRLCK; |
|
flock->fl_flags |= FL_SLEEP; |
|
break; |
|
case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
|
ksmbd_debug(SMB, |
|
"received shared & fail immediately request\n"); |
|
cmd = F_SETLK; |
|
flock->fl_type = F_RDLCK; |
|
break; |
|
case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
|
ksmbd_debug(SMB, |
|
"received exclusive & fail immediately request\n"); |
|
cmd = F_SETLK; |
|
flock->fl_type = F_WRLCK; |
|
break; |
|
case SMB2_LOCKFLAG_UNLOCK: |
|
ksmbd_debug(SMB, "received unlock request\n"); |
|
flock->fl_type = F_UNLCK; |
|
cmd = 0; |
|
break; |
|
} |
|
|
|
return cmd; |
|
} |
|
|
|
static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock, |
|
unsigned int cmd, int flags, |
|
struct list_head *lock_list) |
|
{ |
|
struct ksmbd_lock *lock; |
|
|
|
lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL); |
|
if (!lock) |
|
return NULL; |
|
|
|
lock->cmd = cmd; |
|
lock->fl = flock; |
|
lock->start = flock->fl_start; |
|
lock->end = flock->fl_end; |
|
lock->flags = flags; |
|
if (lock->start == lock->end) |
|
lock->zero_len = 1; |
|
INIT_LIST_HEAD(&lock->clist); |
|
INIT_LIST_HEAD(&lock->flist); |
|
INIT_LIST_HEAD(&lock->llist); |
|
list_add_tail(&lock->llist, lock_list); |
|
|
|
return lock; |
|
} |
|
|
|
static void smb2_remove_blocked_lock(void **argv) |
|
{ |
|
struct file_lock *flock = (struct file_lock *)argv[0]; |
|
|
|
ksmbd_vfs_posix_lock_unblock(flock); |
|
wake_up(&flock->fl_wait); |
|
} |
|
|
|
static inline bool lock_defer_pending(struct file_lock *fl) |
|
{ |
|
/* check pending lock waiters */ |
|
return waitqueue_active(&fl->fl_wait); |
|
} |
|
|
|
/** |
|
* smb2_lock() - handler for smb2 file lock command |
|
* @work: smb work containing lock command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_lock(struct ksmbd_work *work) |
|
{ |
|
struct smb2_lock_req *req = work->request_buf; |
|
struct smb2_lock_rsp *rsp = work->response_buf; |
|
struct smb2_lock_element *lock_ele; |
|
struct ksmbd_file *fp = NULL; |
|
struct file_lock *flock = NULL; |
|
struct file *filp = NULL; |
|
int lock_count; |
|
int flags = 0; |
|
int cmd = 0; |
|
int err = -EIO, i, rc = 0; |
|
u64 lock_start, lock_length; |
|
struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2; |
|
struct ksmbd_conn *conn; |
|
int nolock = 0; |
|
LIST_HEAD(lock_list); |
|
LIST_HEAD(rollback_list); |
|
int prior_lock = 0; |
|
|
|
ksmbd_debug(SMB, "Received lock request\n"); |
|
fp = ksmbd_lookup_fd_slow(work, |
|
le64_to_cpu(req->VolatileFileId), |
|
le64_to_cpu(req->PersistentFileId)); |
|
if (!fp) { |
|
ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", |
|
le64_to_cpu(req->VolatileFileId)); |
|
err = -ENOENT; |
|
goto out2; |
|
} |
|
|
|
filp = fp->filp; |
|
lock_count = le16_to_cpu(req->LockCount); |
|
lock_ele = req->locks; |
|
|
|
ksmbd_debug(SMB, "lock count is %d\n", lock_count); |
|
if (!lock_count) { |
|
err = -EINVAL; |
|
goto out2; |
|
} |
|
|
|
for (i = 0; i < lock_count; i++) { |
|
flags = le32_to_cpu(lock_ele[i].Flags); |
|
|
|
flock = smb_flock_init(filp); |
|
if (!flock) |
|
goto out; |
|
|
|
cmd = smb2_set_flock_flags(flock, flags); |
|
|
|
lock_start = le64_to_cpu(lock_ele[i].Offset); |
|
lock_length = le64_to_cpu(lock_ele[i].Length); |
|
if (lock_start > U64_MAX - lock_length) { |
|
pr_err("Invalid lock range requested\n"); |
|
rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
|
goto out; |
|
} |
|
|
|
if (lock_start > OFFSET_MAX) |
|
flock->fl_start = OFFSET_MAX; |
|
else |
|
flock->fl_start = lock_start; |
|
|
|
lock_length = le64_to_cpu(lock_ele[i].Length); |
|
if (lock_length > OFFSET_MAX - flock->fl_start) |
|
lock_length = OFFSET_MAX - flock->fl_start; |
|
|
|
flock->fl_end = flock->fl_start + lock_length; |
|
|
|
if (flock->fl_end < flock->fl_start) { |
|
ksmbd_debug(SMB, |
|
"the end offset(%llx) is smaller than the start offset(%llx)\n", |
|
flock->fl_end, flock->fl_start); |
|
rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
|
goto out; |
|
} |
|
|
|
/* Check conflict locks in one request */ |
|
list_for_each_entry(cmp_lock, &lock_list, llist) { |
|
if (cmp_lock->fl->fl_start <= flock->fl_start && |
|
cmp_lock->fl->fl_end >= flock->fl_end) { |
|
if (cmp_lock->fl->fl_type != F_UNLCK && |
|
flock->fl_type != F_UNLCK) { |
|
pr_err("conflict two locks in one request\n"); |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
} |
|
} |
|
|
|
smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list); |
|
if (!smb_lock) { |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
} |
|
|
|
list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { |
|
if (smb_lock->cmd < 0) { |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) { |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) && |
|
smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) || |
|
(prior_lock == SMB2_LOCKFLAG_UNLOCK && |
|
!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) { |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
prior_lock = smb_lock->flags; |
|
|
|
if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) && |
|
!(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY)) |
|
goto no_check_cl; |
|
|
|
nolock = 1; |
|
/* check locks in connection list */ |
|
read_lock(&conn_list_lock); |
|
list_for_each_entry(conn, &conn_list, conns_list) { |
|
spin_lock(&conn->llist_lock); |
|
list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) { |
|
if (file_inode(cmp_lock->fl->fl_file) != |
|
file_inode(smb_lock->fl->fl_file)) |
|
continue; |
|
|
|
if (smb_lock->fl->fl_type == F_UNLCK) { |
|
if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file && |
|
cmp_lock->start == smb_lock->start && |
|
cmp_lock->end == smb_lock->end && |
|
!lock_defer_pending(cmp_lock->fl)) { |
|
nolock = 0; |
|
list_del(&cmp_lock->flist); |
|
list_del(&cmp_lock->clist); |
|
spin_unlock(&conn->llist_lock); |
|
read_unlock(&conn_list_lock); |
|
|
|
locks_free_lock(cmp_lock->fl); |
|
kfree(cmp_lock); |
|
goto out_check_cl; |
|
} |
|
continue; |
|
} |
|
|
|
if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) { |
|
if (smb_lock->flags & SMB2_LOCKFLAG_SHARED) |
|
continue; |
|
} else { |
|
if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED) |
|
continue; |
|
} |
|
|
|
/* check zero byte lock range */ |
|
if (cmp_lock->zero_len && !smb_lock->zero_len && |
|
cmp_lock->start > smb_lock->start && |
|
cmp_lock->start < smb_lock->end) { |
|
spin_unlock(&conn->llist_lock); |
|
read_unlock(&conn_list_lock); |
|
pr_err("previous lock conflict with zero byte lock range\n"); |
|
goto out; |
|
} |
|
|
|
if (smb_lock->zero_len && !cmp_lock->zero_len && |
|
smb_lock->start > cmp_lock->start && |
|
smb_lock->start < cmp_lock->end) { |
|
spin_unlock(&conn->llist_lock); |
|
read_unlock(&conn_list_lock); |
|
pr_err("current lock conflict with zero byte lock range\n"); |
|
goto out; |
|
} |
|
|
|
if (((cmp_lock->start <= smb_lock->start && |
|
cmp_lock->end > smb_lock->start) || |
|
(cmp_lock->start < smb_lock->end && |
|
cmp_lock->end >= smb_lock->end)) && |
|
!cmp_lock->zero_len && !smb_lock->zero_len) { |
|
spin_unlock(&conn->llist_lock); |
|
read_unlock(&conn_list_lock); |
|
pr_err("Not allow lock operation on exclusive lock range\n"); |
|
goto out; |
|
} |
|
} |
|
spin_unlock(&conn->llist_lock); |
|
} |
|
read_unlock(&conn_list_lock); |
|
out_check_cl: |
|
if (smb_lock->fl->fl_type == F_UNLCK && nolock) { |
|
pr_err("Try to unlock nolocked range\n"); |
|
rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED; |
|
goto out; |
|
} |
|
|
|
no_check_cl: |
|
if (smb_lock->zero_len) { |
|
err = 0; |
|
goto skip; |
|
} |
|
|
|
flock = smb_lock->fl; |
|
list_del(&smb_lock->llist); |
|
retry: |
|
rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL); |
|
skip: |
|
if (flags & SMB2_LOCKFLAG_UNLOCK) { |
|
if (!rc) { |
|
ksmbd_debug(SMB, "File unlocked\n"); |
|
} else if (rc == -ENOENT) { |
|
rsp->hdr.Status = STATUS_NOT_LOCKED; |
|
goto out; |
|
} |
|
locks_free_lock(flock); |
|
kfree(smb_lock); |
|
} else { |
|
if (rc == FILE_LOCK_DEFERRED) { |
|
void **argv; |
|
|
|
ksmbd_debug(SMB, |
|
"would have to wait for getting lock\n"); |
|
spin_lock(&work->conn->llist_lock); |
|
list_add_tail(&smb_lock->clist, |
|
&work->conn->lock_list); |
|
spin_unlock(&work->conn->llist_lock); |
|
list_add(&smb_lock->llist, &rollback_list); |
|
|
|
argv = kmalloc(sizeof(void *), GFP_KERNEL); |
|
if (!argv) { |
|
err = -ENOMEM; |
|
goto out; |
|
} |
|
argv[0] = flock; |
|
|
|
rc = setup_async_work(work, |
|
smb2_remove_blocked_lock, |
|
argv); |
|
if (rc) { |
|
err = -ENOMEM; |
|
goto out; |
|
} |
|
spin_lock(&fp->f_lock); |
|
list_add(&work->fp_entry, &fp->blocked_works); |
|
spin_unlock(&fp->f_lock); |
|
|
|
smb2_send_interim_resp(work, STATUS_PENDING); |
|
|
|
ksmbd_vfs_posix_lock_wait(flock); |
|
|
|
if (work->state != KSMBD_WORK_ACTIVE) { |
|
list_del(&smb_lock->llist); |
|
spin_lock(&work->conn->llist_lock); |
|
list_del(&smb_lock->clist); |
|
spin_unlock(&work->conn->llist_lock); |
|
locks_free_lock(flock); |
|
|
|
if (work->state == KSMBD_WORK_CANCELLED) { |
|
spin_lock(&fp->f_lock); |
|
list_del(&work->fp_entry); |
|
spin_unlock(&fp->f_lock); |
|
rsp->hdr.Status = |
|
STATUS_CANCELLED; |
|
kfree(smb_lock); |
|
smb2_send_interim_resp(work, |
|
STATUS_CANCELLED); |
|
work->send_no_response = 1; |
|
goto out; |
|
} |
|
init_smb2_rsp_hdr(work); |
|
smb2_set_err_rsp(work); |
|
rsp->hdr.Status = |
|
STATUS_RANGE_NOT_LOCKED; |
|
kfree(smb_lock); |
|
goto out2; |
|
} |
|
|
|
list_del(&smb_lock->llist); |
|
spin_lock(&work->conn->llist_lock); |
|
list_del(&smb_lock->clist); |
|
spin_unlock(&work->conn->llist_lock); |
|
|
|
spin_lock(&fp->f_lock); |
|
list_del(&work->fp_entry); |
|
spin_unlock(&fp->f_lock); |
|
goto retry; |
|
} else if (!rc) { |
|
spin_lock(&work->conn->llist_lock); |
|
list_add_tail(&smb_lock->clist, |
|
&work->conn->lock_list); |
|
list_add_tail(&smb_lock->flist, |
|
&fp->lock_list); |
|
spin_unlock(&work->conn->llist_lock); |
|
list_add(&smb_lock->llist, &rollback_list); |
|
ksmbd_debug(SMB, "successful in taking lock\n"); |
|
} else { |
|
goto out; |
|
} |
|
} |
|
} |
|
|
|
if (atomic_read(&fp->f_ci->op_count) > 1) |
|
smb_break_all_oplock(work, fp); |
|
|
|
rsp->StructureSize = cpu_to_le16(4); |
|
ksmbd_debug(SMB, "successful in taking lock\n"); |
|
rsp->hdr.Status = STATUS_SUCCESS; |
|
rsp->Reserved = 0; |
|
inc_rfc1001_len(rsp, 4); |
|
ksmbd_fd_put(work, fp); |
|
return 0; |
|
|
|
out: |
|
list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { |
|
locks_free_lock(smb_lock->fl); |
|
list_del(&smb_lock->llist); |
|
kfree(smb_lock); |
|
} |
|
|
|
list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) { |
|
struct file_lock *rlock = NULL; |
|
|
|
rlock = smb_flock_init(filp); |
|
rlock->fl_type = F_UNLCK; |
|
rlock->fl_start = smb_lock->start; |
|
rlock->fl_end = smb_lock->end; |
|
|
|
rc = vfs_lock_file(filp, 0, rlock, NULL); |
|
if (rc) |
|
pr_err("rollback unlock fail : %d\n", rc); |
|
|
|
list_del(&smb_lock->llist); |
|
spin_lock(&work->conn->llist_lock); |
|
if (!list_empty(&smb_lock->flist)) |
|
list_del(&smb_lock->flist); |
|
list_del(&smb_lock->clist); |
|
spin_unlock(&work->conn->llist_lock); |
|
|
|
locks_free_lock(smb_lock->fl); |
|
locks_free_lock(rlock); |
|
kfree(smb_lock); |
|
} |
|
out2: |
|
ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err); |
|
|
|
if (!rsp->hdr.Status) { |
|
if (err == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else if (err == -ENOMEM) |
|
rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; |
|
else if (err == -ENOENT) |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
else |
|
rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED; |
|
} |
|
|
|
smb2_set_err_rsp(work); |
|
ksmbd_fd_put(work, fp); |
|
return err; |
|
} |
|
|
|
static int fsctl_copychunk(struct ksmbd_work *work, struct smb2_ioctl_req *req, |
|
struct smb2_ioctl_rsp *rsp) |
|
{ |
|
struct copychunk_ioctl_req *ci_req; |
|
struct copychunk_ioctl_rsp *ci_rsp; |
|
struct ksmbd_file *src_fp = NULL, *dst_fp = NULL; |
|
struct srv_copychunk *chunks; |
|
unsigned int i, chunk_count, chunk_count_written = 0; |
|
unsigned int chunk_size_written = 0; |
|
loff_t total_size_written = 0; |
|
int ret, cnt_code; |
|
|
|
cnt_code = le32_to_cpu(req->CntCode); |
|
ci_req = (struct copychunk_ioctl_req *)&req->Buffer[0]; |
|
ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0]; |
|
|
|
rsp->VolatileFileId = req->VolatileFileId; |
|
rsp->PersistentFileId = req->PersistentFileId; |
|
ci_rsp->ChunksWritten = |
|
cpu_to_le32(ksmbd_server_side_copy_max_chunk_count()); |
|
ci_rsp->ChunkBytesWritten = |
|
cpu_to_le32(ksmbd_server_side_copy_max_chunk_size()); |
|
ci_rsp->TotalBytesWritten = |
|
cpu_to_le32(ksmbd_server_side_copy_max_total_size()); |
|
|
|
chunks = (struct srv_copychunk *)&ci_req->Chunks[0]; |
|
chunk_count = le32_to_cpu(ci_req->ChunkCount); |
|
total_size_written = 0; |
|
|
|
/* verify the SRV_COPYCHUNK_COPY packet */ |
|
if (chunk_count > ksmbd_server_side_copy_max_chunk_count() || |
|
le32_to_cpu(req->InputCount) < |
|
offsetof(struct copychunk_ioctl_req, Chunks) + |
|
chunk_count * sizeof(struct srv_copychunk)) { |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
return -EINVAL; |
|
} |
|
|
|
for (i = 0; i < chunk_count; i++) { |
|
if (le32_to_cpu(chunks[i].Length) == 0 || |
|
le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size()) |
|
break; |
|
total_size_written += le32_to_cpu(chunks[i].Length); |
|
} |
|
|
|
if (i < chunk_count || |
|
total_size_written > ksmbd_server_side_copy_max_total_size()) { |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
return -EINVAL; |
|
} |
|
|
|
src_fp = ksmbd_lookup_foreign_fd(work, |
|
le64_to_cpu(ci_req->ResumeKey[0])); |
|
dst_fp = ksmbd_lookup_fd_slow(work, |
|
le64_to_cpu(req->VolatileFileId), |
|
le64_to_cpu(req->PersistentFileId)); |
|
ret = -EINVAL; |
|
if (!src_fp || |
|
src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) { |
|
rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; |
|
goto out; |
|
} |
|
|
|
if (!dst_fp) { |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
goto out; |
|
} |
|
|
|
/* |
|
* FILE_READ_DATA should only be included in |
|
* the FSCTL_COPYCHUNK case |
|
*/ |
|
if (cnt_code == FSCTL_COPYCHUNK && |
|
!(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) { |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
goto out; |
|
} |
|
|
|
ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp, |
|
chunks, chunk_count, |
|
&chunk_count_written, |
|
&chunk_size_written, |
|
&total_size_written); |
|
if (ret < 0) { |
|
if (ret == -EACCES) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
if (ret == -EAGAIN) |
|
rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; |
|
else if (ret == -EBADF) |
|
rsp->hdr.Status = STATUS_INVALID_HANDLE; |
|
else if (ret == -EFBIG || ret == -ENOSPC) |
|
rsp->hdr.Status = STATUS_DISK_FULL; |
|
else if (ret == -EINVAL) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
else if (ret == -EISDIR) |
|
rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; |
|
else if (ret == -E2BIG) |
|
rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE; |
|
else |
|
rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; |
|
} |
|
|
|
ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written); |
|
ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written); |
|
ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written); |
|
out: |
|
ksmbd_fd_put(work, src_fp); |
|
ksmbd_fd_put(work, dst_fp); |
|
return ret; |
|
} |
|
|
|
static __be32 idev_ipv4_address(struct in_device *idev) |
|
{ |
|
__be32 addr = 0; |
|
|
|
struct in_ifaddr *ifa; |
|
|
|
rcu_read_lock(); |
|
in_dev_for_each_ifa_rcu(ifa, idev) { |
|
if (ifa->ifa_flags & IFA_F_SECONDARY) |
|
continue; |
|
|
|
addr = ifa->ifa_address; |
|
break; |
|
} |
|
rcu_read_unlock(); |
|
return addr; |
|
} |
|
|
|
static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn, |
|
struct smb2_ioctl_req *req, |
|
struct smb2_ioctl_rsp *rsp) |
|
{ |
|
struct network_interface_info_ioctl_rsp *nii_rsp = NULL; |
|
int nbytes = 0; |
|
struct net_device *netdev; |
|
struct sockaddr_storage_rsp *sockaddr_storage; |
|
unsigned int flags; |
|
unsigned long long speed; |
|
struct sockaddr_in6 *csin6 = (struct sockaddr_in6 *)&conn->peer_addr; |
|
|
|
rtnl_lock(); |
|
for_each_netdev(&init_net, netdev) { |
|
if (netdev->type == ARPHRD_LOOPBACK) |
|
continue; |
|
|
|
flags = dev_get_flags(netdev); |
|
if (!(flags & IFF_RUNNING)) |
|
continue; |
|
|
|
nii_rsp = (struct network_interface_info_ioctl_rsp *) |
|
&rsp->Buffer[nbytes]; |
|
nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex); |
|
|
|
nii_rsp->Capability = 0; |
|
if (ksmbd_rdma_capable_netdev(netdev)) |
|
nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE); |
|
|
|
nii_rsp->Next = cpu_to_le32(152); |
|
nii_rsp->Reserved = 0; |
|
|
|
if (netdev->ethtool_ops->get_link_ksettings) { |
|
struct ethtool_link_ksettings cmd; |
|
|
|
netdev->ethtool_ops->get_link_ksettings(netdev, &cmd); |
|
speed = cmd.base.speed; |
|
} else { |
|
ksmbd_debug(SMB, "%s %s\n", netdev->name, |
|
"speed is unknown, defaulting to 1Gb/sec"); |
|
speed = SPEED_1000; |
|
} |
|
|
|
speed *= 1000000; |
|
nii_rsp->LinkSpeed = cpu_to_le64(speed); |
|
|
|
sockaddr_storage = (struct sockaddr_storage_rsp *) |
|
nii_rsp->SockAddr_Storage; |
|
memset(sockaddr_storage, 0, 128); |
|
|
|
if (conn->peer_addr.ss_family == PF_INET || |
|
ipv6_addr_v4mapped(&csin6->sin6_addr)) { |
|
struct in_device *idev; |
|
|
|
sockaddr_storage->Family = cpu_to_le16(INTERNETWORK); |
|
sockaddr_storage->addr4.Port = 0; |
|
|
|
idev = __in_dev_get_rtnl(netdev); |
|
if (!idev) |
|
continue; |
|
sockaddr_storage->addr4.IPv4address = |
|
idev_ipv4_address(idev); |
|
} else { |
|
struct inet6_dev *idev6; |
|
struct inet6_ifaddr *ifa; |
|
__u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address; |
|
|
|
sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6); |
|
sockaddr_storage->addr6.Port = 0; |
|
sockaddr_storage->addr6.FlowInfo = 0; |
|
|
|
idev6 = __in6_dev_get(netdev); |
|
if (!idev6) |
|
continue; |
|
|
|
list_for_each_entry(ifa, &idev6->addr_list, if_list) { |
|
if (ifa->flags & (IFA_F_TENTATIVE | |
|
IFA_F_DEPRECATED)) |
|
continue; |
|
memcpy(ipv6_addr, ifa->addr.s6_addr, 16); |
|
break; |
|
} |
|
sockaddr_storage->addr6.ScopeId = 0; |
|
} |
|
|
|
nbytes += sizeof(struct network_interface_info_ioctl_rsp); |
|
} |
|
rtnl_unlock(); |
|
|
|
/* zero if this is last one */ |
|
if (nii_rsp) |
|
nii_rsp->Next = 0; |
|
|
|
if (!nbytes) { |
|
rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL; |
|
return -EINVAL; |
|
} |
|
|
|
rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID); |
|
rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID); |
|
return nbytes; |
|
} |
|
|
|
static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn, |
|
struct validate_negotiate_info_req *neg_req, |
|
struct validate_negotiate_info_rsp *neg_rsp) |
|
{ |
|
int ret = 0; |
|
int dialect; |
|
|
|
dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects, |
|
neg_req->DialectCount); |
|
if (dialect == BAD_PROT_ID || dialect != conn->dialect) { |
|
ret = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) { |
|
ret = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) { |
|
ret = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) { |
|
ret = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); |
|
memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE); |
|
neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode); |
|
neg_rsp->Dialect = cpu_to_le16(conn->dialect); |
|
err_out: |
|
return ret; |
|
} |
|
|
|
static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id, |
|
struct file_allocated_range_buffer *qar_req, |
|
struct file_allocated_range_buffer *qar_rsp, |
|
int in_count, int *out_count) |
|
{ |
|
struct ksmbd_file *fp; |
|
loff_t start, length; |
|
int ret = 0; |
|
|
|
*out_count = 0; |
|
if (in_count == 0) |
|
return -EINVAL; |
|
|
|
fp = ksmbd_lookup_fd_fast(work, id); |
|
if (!fp) |
|
return -ENOENT; |
|
|
|
start = le64_to_cpu(qar_req->file_offset); |
|
length = le64_to_cpu(qar_req->length); |
|
|
|
ret = ksmbd_vfs_fqar_lseek(fp, start, length, |
|
qar_rsp, in_count, out_count); |
|
if (ret && ret != -E2BIG) |
|
*out_count = 0; |
|
|
|
ksmbd_fd_put(work, fp); |
|
return ret; |
|
} |
|
|
|
static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id, |
|
int out_buf_len, struct smb2_ioctl_req *req, |
|
struct smb2_ioctl_rsp *rsp) |
|
{ |
|
struct ksmbd_rpc_command *rpc_resp; |
|
char *data_buf = (char *)&req->Buffer[0]; |
|
int nbytes = 0; |
|
|
|
rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf, |
|
le32_to_cpu(req->InputCount)); |
|
if (rpc_resp) { |
|
if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) { |
|
/* |
|
* set STATUS_SOME_NOT_MAPPED response |
|
* for unknown domain sid. |
|
*/ |
|
rsp->hdr.Status = STATUS_SOME_NOT_MAPPED; |
|
} else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { |
|
rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
|
goto out; |
|
} else if (rpc_resp->flags != KSMBD_RPC_OK) { |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
goto out; |
|
} |
|
|
|
nbytes = rpc_resp->payload_sz; |
|
if (rpc_resp->payload_sz > out_buf_len) { |
|
rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; |
|
nbytes = out_buf_len; |
|
} |
|
|
|
if (!rpc_resp->payload_sz) { |
|
rsp->hdr.Status = |
|
STATUS_UNEXPECTED_IO_ERROR; |
|
goto out; |
|
} |
|
|
|
memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes); |
|
} |
|
out: |
|
kvfree(rpc_resp); |
|
return nbytes; |
|
} |
|
|
|
static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id, |
|
struct file_sparse *sparse) |
|
{ |
|
struct ksmbd_file *fp; |
|
struct user_namespace *user_ns; |
|
int ret = 0; |
|
__le32 old_fattr; |
|
|
|
fp = ksmbd_lookup_fd_fast(work, id); |
|
if (!fp) |
|
return -ENOENT; |
|
user_ns = file_mnt_user_ns(fp->filp); |
|
|
|
old_fattr = fp->f_ci->m_fattr; |
|
if (sparse->SetSparse) |
|
fp->f_ci->m_fattr |= ATTR_SPARSE_FILE_LE; |
|
else |
|
fp->f_ci->m_fattr &= ~ATTR_SPARSE_FILE_LE; |
|
|
|
if (fp->f_ci->m_fattr != old_fattr && |
|
test_share_config_flag(work->tcon->share_conf, |
|
KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) { |
|
struct xattr_dos_attrib da; |
|
|
|
ret = ksmbd_vfs_get_dos_attrib_xattr(user_ns, |
|
fp->filp->f_path.dentry, &da); |
|
if (ret <= 0) |
|
goto out; |
|
|
|
da.attr = le32_to_cpu(fp->f_ci->m_fattr); |
|
ret = ksmbd_vfs_set_dos_attrib_xattr(user_ns, |
|
fp->filp->f_path.dentry, &da); |
|
if (ret) |
|
fp->f_ci->m_fattr = old_fattr; |
|
} |
|
|
|
out: |
|
ksmbd_fd_put(work, fp); |
|
return ret; |
|
} |
|
|
|
static int fsctl_request_resume_key(struct ksmbd_work *work, |
|
struct smb2_ioctl_req *req, |
|
struct resume_key_ioctl_rsp *key_rsp) |
|
{ |
|
struct ksmbd_file *fp; |
|
|
|
fp = ksmbd_lookup_fd_slow(work, |
|
le64_to_cpu(req->VolatileFileId), |
|
le64_to_cpu(req->PersistentFileId)); |
|
if (!fp) |
|
return -ENOENT; |
|
|
|
memset(key_rsp, 0, sizeof(*key_rsp)); |
|
key_rsp->ResumeKey[0] = req->VolatileFileId; |
|
key_rsp->ResumeKey[1] = req->PersistentFileId; |
|
ksmbd_fd_put(work, fp); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_ioctl() - handler for smb2 ioctl command |
|
* @work: smb work containing ioctl command buffer |
|
* |
|
* Return: 0 on success, otherwise error |
|
*/ |
|
int smb2_ioctl(struct ksmbd_work *work) |
|
{ |
|
struct smb2_ioctl_req *req; |
|
struct smb2_ioctl_rsp *rsp, *rsp_org; |
|
int cnt_code, nbytes = 0; |
|
int out_buf_len; |
|
u64 id = KSMBD_NO_FID; |
|
struct ksmbd_conn *conn = work->conn; |
|
int ret = 0; |
|
|
|
rsp_org = work->response_buf; |
|
if (work->next_smb2_rcv_hdr_off) { |
|
req = ksmbd_req_buf_next(work); |
|
rsp = ksmbd_resp_buf_next(work); |
|
if (!has_file_id(le64_to_cpu(req->VolatileFileId))) { |
|
ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
|
work->compound_fid); |
|
id = work->compound_fid; |
|
} |
|
} else { |
|
req = work->request_buf; |
|
rsp = work->response_buf; |
|
} |
|
|
|
if (!has_file_id(id)) |
|
id = le64_to_cpu(req->VolatileFileId); |
|
|
|
if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) { |
|
rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
|
goto out; |
|
} |
|
|
|
cnt_code = le32_to_cpu(req->CntCode); |
|
out_buf_len = le32_to_cpu(req->MaxOutputResponse); |
|
out_buf_len = min(KSMBD_IPC_MAX_PAYLOAD, out_buf_len); |
|
|
|
switch (cnt_code) { |
|
case FSCTL_DFS_GET_REFERRALS: |
|
case FSCTL_DFS_GET_REFERRALS_EX: |
|
/* Not support DFS yet */ |
|
rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED; |
|
goto out; |
|
case FSCTL_CREATE_OR_GET_OBJECT_ID: |
|
{ |
|
struct file_object_buf_type1_ioctl_rsp *obj_buf; |
|
|
|
nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp); |
|
obj_buf = (struct file_object_buf_type1_ioctl_rsp *) |
|
&rsp->Buffer[0]; |
|
|
|
/* |
|
* TODO: This is dummy implementation to pass smbtorture |
|
* Need to check correct response later |
|
*/ |
|
memset(obj_buf->ObjectId, 0x0, 16); |
|
memset(obj_buf->BirthVolumeId, 0x0, 16); |
|
memset(obj_buf->BirthObjectId, 0x0, 16); |
|
memset(obj_buf->DomainId, 0x0, 16); |
|
|
|
break; |
|
} |
|
case FSCTL_PIPE_TRANSCEIVE: |
|
nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp); |
|
break; |
|
case FSCTL_VALIDATE_NEGOTIATE_INFO: |
|
if (conn->dialect < SMB30_PROT_ID) { |
|
ret = -EOPNOTSUPP; |
|
goto out; |
|
} |
|
|
|
ret = fsctl_validate_negotiate_info(conn, |
|
(struct validate_negotiate_info_req *)&req->Buffer[0], |
|
(struct validate_negotiate_info_rsp *)&rsp->Buffer[0]); |
|
if (ret < 0) |
|
goto out; |
|
|
|
nbytes = sizeof(struct validate_negotiate_info_rsp); |
|
rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID); |
|
rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID); |
|
break; |
|
case FSCTL_QUERY_NETWORK_INTERFACE_INFO: |
|
nbytes = fsctl_query_iface_info_ioctl(conn, req, rsp); |
|
if (nbytes < 0) |
|
goto out; |
|
break; |
|
case FSCTL_REQUEST_RESUME_KEY: |
|
if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
ret = fsctl_request_resume_key(work, req, |
|
(struct resume_key_ioctl_rsp *)&rsp->Buffer[0]); |
|
if (ret < 0) |
|
goto out; |
|
rsp->PersistentFileId = req->PersistentFileId; |
|
rsp->VolatileFileId = req->VolatileFileId; |
|
nbytes = sizeof(struct resume_key_ioctl_rsp); |
|
break; |
|
case FSCTL_COPYCHUNK: |
|
case FSCTL_COPYCHUNK_WRITE: |
|
if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
ksmbd_debug(SMB, |
|
"User does not have write permission\n"); |
|
ret = -EACCES; |
|
goto out; |
|
} |
|
|
|
if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
nbytes = sizeof(struct copychunk_ioctl_rsp); |
|
fsctl_copychunk(work, req, rsp); |
|
break; |
|
case FSCTL_SET_SPARSE: |
|
ret = fsctl_set_sparse(work, id, |
|
(struct file_sparse *)&req->Buffer[0]); |
|
if (ret < 0) |
|
goto out; |
|
break; |
|
case FSCTL_SET_ZERO_DATA: |
|
{ |
|
struct file_zero_data_information *zero_data; |
|
struct ksmbd_file *fp; |
|
loff_t off, len; |
|
|
|
if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
|
ksmbd_debug(SMB, |
|
"User does not have write permission\n"); |
|
ret = -EACCES; |
|
goto out; |
|
} |
|
|
|
zero_data = |
|
(struct file_zero_data_information *)&req->Buffer[0]; |
|
|
|
fp = ksmbd_lookup_fd_fast(work, id); |
|
if (!fp) { |
|
ret = -ENOENT; |
|
goto out; |
|
} |
|
|
|
off = le64_to_cpu(zero_data->FileOffset); |
|
len = le64_to_cpu(zero_data->BeyondFinalZero) - off; |
|
|
|
ret = ksmbd_vfs_zero_data(work, fp, off, len); |
|
ksmbd_fd_put(work, fp); |
|
if (ret < 0) |
|
goto out; |
|
break; |
|
} |
|
case FSCTL_QUERY_ALLOCATED_RANGES: |
|
ret = fsctl_query_allocated_ranges(work, id, |
|
(struct file_allocated_range_buffer *)&req->Buffer[0], |
|
(struct file_allocated_range_buffer *)&rsp->Buffer[0], |
|
out_buf_len / |
|
sizeof(struct file_allocated_range_buffer), &nbytes); |
|
if (ret == -E2BIG) { |
|
rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; |
|
} else if (ret < 0) { |
|
nbytes = 0; |
|
goto out; |
|
} |
|
|
|
nbytes *= sizeof(struct file_allocated_range_buffer); |
|
break; |
|
case FSCTL_GET_REPARSE_POINT: |
|
{ |
|
struct reparse_data_buffer *reparse_ptr; |
|
struct ksmbd_file *fp; |
|
|
|
reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0]; |
|
fp = ksmbd_lookup_fd_fast(work, id); |
|
if (!fp) { |
|
pr_err("not found fp!!\n"); |
|
ret = -ENOENT; |
|
goto out; |
|
} |
|
|
|
reparse_ptr->ReparseTag = |
|
smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode); |
|
reparse_ptr->ReparseDataLength = 0; |
|
ksmbd_fd_put(work, fp); |
|
nbytes = sizeof(struct reparse_data_buffer); |
|
break; |
|
} |
|
case FSCTL_DUPLICATE_EXTENTS_TO_FILE: |
|
{ |
|
struct ksmbd_file *fp_in, *fp_out = NULL; |
|
struct duplicate_extents_to_file *dup_ext; |
|
loff_t src_off, dst_off, length, cloned; |
|
|
|
dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0]; |
|
|
|
fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle, |
|
dup_ext->PersistentFileHandle); |
|
if (!fp_in) { |
|
pr_err("not found file handle in duplicate extent to file\n"); |
|
ret = -ENOENT; |
|
goto out; |
|
} |
|
|
|
fp_out = ksmbd_lookup_fd_fast(work, id); |
|
if (!fp_out) { |
|
pr_err("not found fp\n"); |
|
ret = -ENOENT; |
|
goto dup_ext_out; |
|
} |
|
|
|
src_off = le64_to_cpu(dup_ext->SourceFileOffset); |
|
dst_off = le64_to_cpu(dup_ext->TargetFileOffset); |
|
length = le64_to_cpu(dup_ext->ByteCount); |
|
cloned = vfs_clone_file_range(fp_in->filp, src_off, fp_out->filp, |
|
dst_off, length, 0); |
|
if (cloned == -EXDEV || cloned == -EOPNOTSUPP) { |
|
ret = -EOPNOTSUPP; |
|
goto dup_ext_out; |
|
} else if (cloned != length) { |
|
cloned = vfs_copy_file_range(fp_in->filp, src_off, |
|
fp_out->filp, dst_off, length, 0); |
|
if (cloned != length) { |
|
if (cloned < 0) |
|
ret = cloned; |
|
else |
|
ret = -EINVAL; |
|
} |
|
} |
|
|
|
dup_ext_out: |
|
ksmbd_fd_put(work, fp_in); |
|
ksmbd_fd_put(work, fp_out); |
|
if (ret < 0) |
|
goto out; |
|
break; |
|
} |
|
default: |
|
ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n", |
|
cnt_code); |
|
ret = -EOPNOTSUPP; |
|
goto out; |
|
} |
|
|
|
rsp->CntCode = cpu_to_le32(cnt_code); |
|
rsp->InputCount = cpu_to_le32(0); |
|
rsp->InputOffset = cpu_to_le32(112); |
|
rsp->OutputOffset = cpu_to_le32(112); |
|
rsp->OutputCount = cpu_to_le32(nbytes); |
|
rsp->StructureSize = cpu_to_le16(49); |
|
rsp->Reserved = cpu_to_le16(0); |
|
rsp->Flags = cpu_to_le32(0); |
|
rsp->Reserved2 = cpu_to_le32(0); |
|
inc_rfc1001_len(rsp_org, 48 + nbytes); |
|
|
|
return 0; |
|
|
|
out: |
|
if (ret == -EACCES) |
|
rsp->hdr.Status = STATUS_ACCESS_DENIED; |
|
else if (ret == -ENOENT) |
|
rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; |
|
else if (ret == -EOPNOTSUPP) |
|
rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
|
else if (ret < 0 || rsp->hdr.Status == 0) |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
smb2_set_err_rsp(work); |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb20_oplock_break_ack() - handler for smb2.0 oplock break command |
|
* @work: smb work containing oplock break command buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
static void smb20_oplock_break_ack(struct ksmbd_work *work) |
|
{ |
|
struct smb2_oplock_break *req = work->request_buf; |
|
struct smb2_oplock_break *rsp = work->response_buf; |
|
struct ksmbd_file *fp; |
|
struct oplock_info *opinfo = NULL; |
|
__le32 err = 0; |
|
int ret = 0; |
|
u64 volatile_id, persistent_id; |
|
char req_oplevel = 0, rsp_oplevel = 0; |
|
unsigned int oplock_change_type; |
|
|
|
volatile_id = le64_to_cpu(req->VolatileFid); |
|
persistent_id = le64_to_cpu(req->PersistentFid); |
|
req_oplevel = req->OplockLevel; |
|
ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n", |
|
volatile_id, persistent_id, req_oplevel); |
|
|
|
fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id); |
|
if (!fp) { |
|
rsp->hdr.Status = STATUS_FILE_CLOSED; |
|
smb2_set_err_rsp(work); |
|
return; |
|
} |
|
|
|
opinfo = opinfo_get(fp); |
|
if (!opinfo) { |
|
pr_err("unexpected null oplock_info\n"); |
|
rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; |
|
smb2_set_err_rsp(work); |
|
ksmbd_fd_put(work, fp); |
|
return; |
|
} |
|
|
|
if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) { |
|
rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; |
|
goto err_out; |
|
} |
|
|
|
if (opinfo->op_state == OPLOCK_STATE_NONE) { |
|
ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state); |
|
rsp->hdr.Status = STATUS_UNSUCCESSFUL; |
|
goto err_out; |
|
} |
|
|
|
if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
|
opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && |
|
(req_oplevel != SMB2_OPLOCK_LEVEL_II && |
|
req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) { |
|
err = STATUS_INVALID_OPLOCK_PROTOCOL; |
|
oplock_change_type = OPLOCK_WRITE_TO_NONE; |
|
} else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
|
req_oplevel != SMB2_OPLOCK_LEVEL_NONE) { |
|
err = STATUS_INVALID_OPLOCK_PROTOCOL; |
|
oplock_change_type = OPLOCK_READ_TO_NONE; |
|
} else if (req_oplevel == SMB2_OPLOCK_LEVEL_II || |
|
req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { |
|
err = STATUS_INVALID_DEVICE_STATE; |
|
if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
|
opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && |
|
req_oplevel == SMB2_OPLOCK_LEVEL_II) { |
|
oplock_change_type = OPLOCK_WRITE_TO_READ; |
|
} else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
|
opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && |
|
req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { |
|
oplock_change_type = OPLOCK_WRITE_TO_NONE; |
|
} else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
|
req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { |
|
oplock_change_type = OPLOCK_READ_TO_NONE; |
|
} else { |
|
oplock_change_type = 0; |
|
} |
|
} else { |
|
oplock_change_type = 0; |
|
} |
|
|
|
switch (oplock_change_type) { |
|
case OPLOCK_WRITE_TO_READ: |
|
ret = opinfo_write_to_read(opinfo); |
|
rsp_oplevel = SMB2_OPLOCK_LEVEL_II; |
|
break; |
|
case OPLOCK_WRITE_TO_NONE: |
|
ret = opinfo_write_to_none(opinfo); |
|
rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; |
|
break; |
|
case OPLOCK_READ_TO_NONE: |
|
ret = opinfo_read_to_none(opinfo); |
|
rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; |
|
break; |
|
default: |
|
pr_err("unknown oplock change 0x%x -> 0x%x\n", |
|
opinfo->level, rsp_oplevel); |
|
} |
|
|
|
if (ret < 0) { |
|
rsp->hdr.Status = err; |
|
goto err_out; |
|
} |
|
|
|
opinfo_put(opinfo); |
|
ksmbd_fd_put(work, fp); |
|
opinfo->op_state = OPLOCK_STATE_NONE; |
|
wake_up_interruptible_all(&opinfo->oplock_q); |
|
|
|
rsp->StructureSize = cpu_to_le16(24); |
|
rsp->OplockLevel = rsp_oplevel; |
|
rsp->Reserved = 0; |
|
rsp->Reserved2 = 0; |
|
rsp->VolatileFid = cpu_to_le64(volatile_id); |
|
rsp->PersistentFid = cpu_to_le64(persistent_id); |
|
inc_rfc1001_len(rsp, 24); |
|
return; |
|
|
|
err_out: |
|
opinfo->op_state = OPLOCK_STATE_NONE; |
|
wake_up_interruptible_all(&opinfo->oplock_q); |
|
|
|
opinfo_put(opinfo); |
|
ksmbd_fd_put(work, fp); |
|
smb2_set_err_rsp(work); |
|
} |
|
|
|
static int check_lease_state(struct lease *lease, __le32 req_state) |
|
{ |
|
if ((lease->new_state == |
|
(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) && |
|
!(req_state & SMB2_LEASE_WRITE_CACHING_LE)) { |
|
lease->new_state = req_state; |
|
return 0; |
|
} |
|
|
|
if (lease->new_state == req_state) |
|
return 0; |
|
|
|
return 1; |
|
} |
|
|
|
/** |
|
* smb21_lease_break_ack() - handler for smb2.1 lease break command |
|
* @work: smb work containing lease break command buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
static void smb21_lease_break_ack(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_lease_ack *req = work->request_buf; |
|
struct smb2_lease_ack *rsp = work->response_buf; |
|
struct oplock_info *opinfo; |
|
__le32 err = 0; |
|
int ret = 0; |
|
unsigned int lease_change_type; |
|
__le32 lease_state; |
|
struct lease *lease; |
|
|
|
ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n", |
|
le32_to_cpu(req->LeaseState)); |
|
opinfo = lookup_lease_in_table(conn, req->LeaseKey); |
|
if (!opinfo) { |
|
ksmbd_debug(OPLOCK, "file not opened\n"); |
|
smb2_set_err_rsp(work); |
|
rsp->hdr.Status = STATUS_UNSUCCESSFUL; |
|
return; |
|
} |
|
lease = opinfo->o_lease; |
|
|
|
if (opinfo->op_state == OPLOCK_STATE_NONE) { |
|
pr_err("unexpected lease break state 0x%x\n", |
|
opinfo->op_state); |
|
rsp->hdr.Status = STATUS_UNSUCCESSFUL; |
|
goto err_out; |
|
} |
|
|
|
if (check_lease_state(lease, req->LeaseState)) { |
|
rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; |
|
ksmbd_debug(OPLOCK, |
|
"req lease state: 0x%x, expected state: 0x%x\n", |
|
req->LeaseState, lease->new_state); |
|
goto err_out; |
|
} |
|
|
|
if (!atomic_read(&opinfo->breaking_cnt)) { |
|
rsp->hdr.Status = STATUS_UNSUCCESSFUL; |
|
goto err_out; |
|
} |
|
|
|
/* check for bad lease state */ |
|
if (req->LeaseState & |
|
(~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) { |
|
err = STATUS_INVALID_OPLOCK_PROTOCOL; |
|
if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) |
|
lease_change_type = OPLOCK_WRITE_TO_NONE; |
|
else |
|
lease_change_type = OPLOCK_READ_TO_NONE; |
|
ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", |
|
le32_to_cpu(lease->state), |
|
le32_to_cpu(req->LeaseState)); |
|
} else if (lease->state == SMB2_LEASE_READ_CACHING_LE && |
|
req->LeaseState != SMB2_LEASE_NONE_LE) { |
|
err = STATUS_INVALID_OPLOCK_PROTOCOL; |
|
lease_change_type = OPLOCK_READ_TO_NONE; |
|
ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", |
|
le32_to_cpu(lease->state), |
|
le32_to_cpu(req->LeaseState)); |
|
} else { |
|
/* valid lease state changes */ |
|
err = STATUS_INVALID_DEVICE_STATE; |
|
if (req->LeaseState == SMB2_LEASE_NONE_LE) { |
|
if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) |
|
lease_change_type = OPLOCK_WRITE_TO_NONE; |
|
else |
|
lease_change_type = OPLOCK_READ_TO_NONE; |
|
} else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) { |
|
if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) |
|
lease_change_type = OPLOCK_WRITE_TO_READ; |
|
else |
|
lease_change_type = OPLOCK_READ_HANDLE_TO_READ; |
|
} else { |
|
lease_change_type = 0; |
|
} |
|
} |
|
|
|
switch (lease_change_type) { |
|
case OPLOCK_WRITE_TO_READ: |
|
ret = opinfo_write_to_read(opinfo); |
|
break; |
|
case OPLOCK_READ_HANDLE_TO_READ: |
|
ret = opinfo_read_handle_to_read(opinfo); |
|
break; |
|
case OPLOCK_WRITE_TO_NONE: |
|
ret = opinfo_write_to_none(opinfo); |
|
break; |
|
case OPLOCK_READ_TO_NONE: |
|
ret = opinfo_read_to_none(opinfo); |
|
break; |
|
default: |
|
ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n", |
|
le32_to_cpu(lease->state), |
|
le32_to_cpu(req->LeaseState)); |
|
} |
|
|
|
lease_state = lease->state; |
|
opinfo->op_state = OPLOCK_STATE_NONE; |
|
wake_up_interruptible_all(&opinfo->oplock_q); |
|
atomic_dec(&opinfo->breaking_cnt); |
|
wake_up_interruptible_all(&opinfo->oplock_brk); |
|
opinfo_put(opinfo); |
|
|
|
if (ret < 0) { |
|
rsp->hdr.Status = err; |
|
goto err_out; |
|
} |
|
|
|
rsp->StructureSize = cpu_to_le16(36); |
|
rsp->Reserved = 0; |
|
rsp->Flags = 0; |
|
memcpy(rsp->LeaseKey, req->LeaseKey, 16); |
|
rsp->LeaseState = lease_state; |
|
rsp->LeaseDuration = 0; |
|
inc_rfc1001_len(rsp, 36); |
|
return; |
|
|
|
err_out: |
|
opinfo->op_state = OPLOCK_STATE_NONE; |
|
wake_up_interruptible_all(&opinfo->oplock_q); |
|
atomic_dec(&opinfo->breaking_cnt); |
|
wake_up_interruptible_all(&opinfo->oplock_brk); |
|
|
|
opinfo_put(opinfo); |
|
smb2_set_err_rsp(work); |
|
} |
|
|
|
/** |
|
* smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break |
|
* @work: smb work containing oplock/lease break command buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
int smb2_oplock_break(struct ksmbd_work *work) |
|
{ |
|
struct smb2_oplock_break *req = work->request_buf; |
|
struct smb2_oplock_break *rsp = work->response_buf; |
|
|
|
switch (le16_to_cpu(req->StructureSize)) { |
|
case OP_BREAK_STRUCT_SIZE_20: |
|
smb20_oplock_break_ack(work); |
|
break; |
|
case OP_BREAK_STRUCT_SIZE_21: |
|
smb21_lease_break_ack(work); |
|
break; |
|
default: |
|
ksmbd_debug(OPLOCK, "invalid break cmd %d\n", |
|
le16_to_cpu(req->StructureSize)); |
|
rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
|
smb2_set_err_rsp(work); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_notify() - handler for smb2 notify request |
|
* @work: smb work containing notify command buffer |
|
* |
|
* Return: 0 |
|
*/ |
|
int smb2_notify(struct ksmbd_work *work) |
|
{ |
|
struct smb2_notify_req *req; |
|
struct smb2_notify_rsp *rsp; |
|
|
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) { |
|
rsp->hdr.Status = STATUS_INTERNAL_ERROR; |
|
smb2_set_err_rsp(work); |
|
return 0; |
|
} |
|
|
|
smb2_set_err_rsp(work); |
|
rsp->hdr.Status = STATUS_NOT_IMPLEMENTED; |
|
return 0; |
|
} |
|
|
|
/** |
|
* smb2_is_sign_req() - handler for checking packet signing status |
|
* @work: smb work containing notify command buffer |
|
* @command: SMB2 command id |
|
* |
|
* Return: true if packed is signed, false otherwise |
|
*/ |
|
bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command) |
|
{ |
|
struct smb2_hdr *rcv_hdr2 = work->request_buf; |
|
|
|
if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) && |
|
command != SMB2_NEGOTIATE_HE && |
|
command != SMB2_SESSION_SETUP_HE && |
|
command != SMB2_OPLOCK_BREAK_HE) |
|
return true; |
|
|
|
return false; |
|
} |
|
|
|
/** |
|
* smb2_check_sign_req() - handler for req packet sign processing |
|
* @work: smb work containing notify command buffer |
|
* |
|
* Return: 1 on success, 0 otherwise |
|
*/ |
|
int smb2_check_sign_req(struct ksmbd_work *work) |
|
{ |
|
struct smb2_hdr *hdr, *hdr_org; |
|
char signature_req[SMB2_SIGNATURE_SIZE]; |
|
char signature[SMB2_HMACSHA256_SIZE]; |
|
struct kvec iov[1]; |
|
size_t len; |
|
|
|
hdr_org = hdr = work->request_buf; |
|
if (work->next_smb2_rcv_hdr_off) |
|
hdr = ksmbd_req_buf_next(work); |
|
|
|
if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) |
|
len = be32_to_cpu(hdr_org->smb2_buf_length); |
|
else if (hdr->NextCommand) |
|
len = le32_to_cpu(hdr->NextCommand); |
|
else |
|
len = be32_to_cpu(hdr_org->smb2_buf_length) - |
|
work->next_smb2_rcv_hdr_off; |
|
|
|
memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); |
|
memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); |
|
|
|
iov[0].iov_base = (char *)&hdr->ProtocolId; |
|
iov[0].iov_len = len; |
|
|
|
if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1, |
|
signature)) |
|
return 0; |
|
|
|
if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { |
|
pr_err("bad smb2 signature\n"); |
|
return 0; |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
/** |
|
* smb2_set_sign_rsp() - handler for rsp packet sign processing |
|
* @work: smb work containing notify command buffer |
|
* |
|
*/ |
|
void smb2_set_sign_rsp(struct ksmbd_work *work) |
|
{ |
|
struct smb2_hdr *hdr, *hdr_org; |
|
struct smb2_hdr *req_hdr; |
|
char signature[SMB2_HMACSHA256_SIZE]; |
|
struct kvec iov[2]; |
|
size_t len; |
|
int n_vec = 1; |
|
|
|
hdr_org = hdr = work->response_buf; |
|
if (work->next_smb2_rsp_hdr_off) |
|
hdr = ksmbd_resp_buf_next(work); |
|
|
|
req_hdr = ksmbd_req_buf_next(work); |
|
|
|
if (!work->next_smb2_rsp_hdr_off) { |
|
len = get_rfc1002_len(hdr_org); |
|
if (req_hdr->NextCommand) |
|
len = ALIGN(len, 8); |
|
} else { |
|
len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off; |
|
len = ALIGN(len, 8); |
|
} |
|
|
|
if (req_hdr->NextCommand) |
|
hdr->NextCommand = cpu_to_le32(len); |
|
|
|
hdr->Flags |= SMB2_FLAGS_SIGNED; |
|
memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); |
|
|
|
iov[0].iov_base = (char *)&hdr->ProtocolId; |
|
iov[0].iov_len = len; |
|
|
|
if (work->aux_payload_sz) { |
|
iov[0].iov_len -= work->aux_payload_sz; |
|
|
|
iov[1].iov_base = work->aux_payload_buf; |
|
iov[1].iov_len = work->aux_payload_sz; |
|
n_vec++; |
|
} |
|
|
|
if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec, |
|
signature)) |
|
memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); |
|
} |
|
|
|
/** |
|
* smb3_check_sign_req() - handler for req packet sign processing |
|
* @work: smb work containing notify command buffer |
|
* |
|
* Return: 1 on success, 0 otherwise |
|
*/ |
|
int smb3_check_sign_req(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
char *signing_key; |
|
struct smb2_hdr *hdr, *hdr_org; |
|
struct channel *chann; |
|
char signature_req[SMB2_SIGNATURE_SIZE]; |
|
char signature[SMB2_CMACAES_SIZE]; |
|
struct kvec iov[1]; |
|
size_t len; |
|
|
|
hdr_org = hdr = work->request_buf; |
|
if (work->next_smb2_rcv_hdr_off) |
|
hdr = ksmbd_req_buf_next(work); |
|
|
|
if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) |
|
len = be32_to_cpu(hdr_org->smb2_buf_length); |
|
else if (hdr->NextCommand) |
|
len = le32_to_cpu(hdr->NextCommand); |
|
else |
|
len = be32_to_cpu(hdr_org->smb2_buf_length) - |
|
work->next_smb2_rcv_hdr_off; |
|
|
|
if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { |
|
signing_key = work->sess->smb3signingkey; |
|
} else { |
|
chann = lookup_chann_list(work->sess, conn); |
|
if (!chann) |
|
return 0; |
|
signing_key = chann->smb3signingkey; |
|
} |
|
|
|
if (!signing_key) { |
|
pr_err("SMB3 signing key is not generated\n"); |
|
return 0; |
|
} |
|
|
|
memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); |
|
memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); |
|
iov[0].iov_base = (char *)&hdr->ProtocolId; |
|
iov[0].iov_len = len; |
|
|
|
if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature)) |
|
return 0; |
|
|
|
if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { |
|
pr_err("bad smb2 signature\n"); |
|
return 0; |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
/** |
|
* smb3_set_sign_rsp() - handler for rsp packet sign processing |
|
* @work: smb work containing notify command buffer |
|
* |
|
*/ |
|
void smb3_set_sign_rsp(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_hdr *req_hdr; |
|
struct smb2_hdr *hdr, *hdr_org; |
|
struct channel *chann; |
|
char signature[SMB2_CMACAES_SIZE]; |
|
struct kvec iov[2]; |
|
int n_vec = 1; |
|
size_t len; |
|
char *signing_key; |
|
|
|
hdr_org = hdr = work->response_buf; |
|
if (work->next_smb2_rsp_hdr_off) |
|
hdr = ksmbd_resp_buf_next(work); |
|
|
|
req_hdr = ksmbd_req_buf_next(work); |
|
|
|
if (!work->next_smb2_rsp_hdr_off) { |
|
len = get_rfc1002_len(hdr_org); |
|
if (req_hdr->NextCommand) |
|
len = ALIGN(len, 8); |
|
} else { |
|
len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off; |
|
len = ALIGN(len, 8); |
|
} |
|
|
|
if (conn->binding == false && |
|
le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { |
|
signing_key = work->sess->smb3signingkey; |
|
} else { |
|
chann = lookup_chann_list(work->sess, work->conn); |
|
if (!chann) |
|
return; |
|
signing_key = chann->smb3signingkey; |
|
} |
|
|
|
if (!signing_key) |
|
return; |
|
|
|
if (req_hdr->NextCommand) |
|
hdr->NextCommand = cpu_to_le32(len); |
|
|
|
hdr->Flags |= SMB2_FLAGS_SIGNED; |
|
memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); |
|
iov[0].iov_base = (char *)&hdr->ProtocolId; |
|
iov[0].iov_len = len; |
|
if (work->aux_payload_sz) { |
|
iov[0].iov_len -= work->aux_payload_sz; |
|
iov[1].iov_base = work->aux_payload_buf; |
|
iov[1].iov_len = work->aux_payload_sz; |
|
n_vec++; |
|
} |
|
|
|
if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature)) |
|
memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); |
|
} |
|
|
|
/** |
|
* smb3_preauth_hash_rsp() - handler for computing preauth hash on response |
|
* @work: smb work containing response buffer |
|
* |
|
*/ |
|
void smb3_preauth_hash_rsp(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct ksmbd_session *sess = work->sess; |
|
struct smb2_hdr *req, *rsp; |
|
|
|
if (conn->dialect != SMB311_PROT_ID) |
|
return; |
|
|
|
WORK_BUFFERS(work, req, rsp); |
|
|
|
if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE) |
|
ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp, |
|
conn->preauth_info->Preauth_HashValue); |
|
|
|
if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) { |
|
__u8 *hash_value; |
|
|
|
if (conn->binding) { |
|
struct preauth_session *preauth_sess; |
|
|
|
preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); |
|
if (!preauth_sess) |
|
return; |
|
hash_value = preauth_sess->Preauth_HashValue; |
|
} else { |
|
hash_value = sess->Preauth_HashValue; |
|
if (!hash_value) |
|
return; |
|
} |
|
ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp, |
|
hash_value); |
|
} |
|
} |
|
|
|
static void fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, char *old_buf, |
|
__le16 cipher_type) |
|
{ |
|
struct smb2_hdr *hdr = (struct smb2_hdr *)old_buf; |
|
unsigned int orig_len = get_rfc1002_len(old_buf); |
|
|
|
memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); |
|
tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; |
|
tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); |
|
tr_hdr->Flags = cpu_to_le16(0x01); |
|
if (cipher_type == SMB2_ENCRYPTION_AES128_GCM || |
|
cipher_type == SMB2_ENCRYPTION_AES256_GCM) |
|
get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
|
else |
|
get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
|
memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8); |
|
inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4); |
|
inc_rfc1001_len(tr_hdr, orig_len); |
|
} |
|
|
|
int smb3_encrypt_resp(struct ksmbd_work *work) |
|
{ |
|
char *buf = work->response_buf; |
|
struct smb2_transform_hdr *tr_hdr; |
|
struct kvec iov[3]; |
|
int rc = -ENOMEM; |
|
int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0); |
|
|
|
if (ARRAY_SIZE(iov) < rq_nvec) |
|
return -ENOMEM; |
|
|
|
tr_hdr = kzalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL); |
|
if (!tr_hdr) |
|
return rc; |
|
|
|
/* fill transform header */ |
|
fill_transform_hdr(tr_hdr, buf, work->conn->cipher_type); |
|
|
|
iov[0].iov_base = tr_hdr; |
|
iov[0].iov_len = sizeof(struct smb2_transform_hdr); |
|
buf_size += iov[0].iov_len - 4; |
|
|
|
iov[1].iov_base = buf + 4; |
|
iov[1].iov_len = get_rfc1002_len(buf); |
|
if (work->aux_payload_sz) { |
|
iov[1].iov_len = work->resp_hdr_sz - 4; |
|
|
|
iov[2].iov_base = work->aux_payload_buf; |
|
iov[2].iov_len = work->aux_payload_sz; |
|
buf_size += iov[2].iov_len; |
|
} |
|
buf_size += iov[1].iov_len; |
|
work->resp_hdr_sz = iov[1].iov_len; |
|
|
|
rc = ksmbd_crypt_message(work->conn, iov, rq_nvec, 1); |
|
if (rc) |
|
return rc; |
|
|
|
memmove(buf, iov[1].iov_base, iov[1].iov_len); |
|
tr_hdr->smb2_buf_length = cpu_to_be32(buf_size); |
|
work->tr_buf = tr_hdr; |
|
|
|
return rc; |
|
} |
|
|
|
bool smb3_is_transform_hdr(void *buf) |
|
{ |
|
struct smb2_transform_hdr *trhdr = buf; |
|
|
|
return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; |
|
} |
|
|
|
int smb3_decrypt_req(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct ksmbd_session *sess; |
|
char *buf = work->request_buf; |
|
struct smb2_hdr *hdr; |
|
unsigned int pdu_length = get_rfc1002_len(buf); |
|
struct kvec iov[2]; |
|
unsigned int buf_data_size = pdu_length + 4 - |
|
sizeof(struct smb2_transform_hdr); |
|
struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; |
|
unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); |
|
int rc = 0; |
|
|
|
sess = ksmbd_session_lookup_all(conn, le64_to_cpu(tr_hdr->SessionId)); |
|
if (!sess) { |
|
pr_err("invalid session id(%llx) in transform header\n", |
|
le64_to_cpu(tr_hdr->SessionId)); |
|
return -ECONNABORTED; |
|
} |
|
|
|
if (pdu_length + 4 < |
|
sizeof(struct smb2_transform_hdr) + sizeof(struct smb2_hdr)) { |
|
pr_err("Transform message is too small (%u)\n", |
|
pdu_length); |
|
return -ECONNABORTED; |
|
} |
|
|
|
if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) { |
|
pr_err("Transform message is broken\n"); |
|
return -ECONNABORTED; |
|
} |
|
|
|
iov[0].iov_base = buf; |
|
iov[0].iov_len = sizeof(struct smb2_transform_hdr); |
|
iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); |
|
iov[1].iov_len = buf_data_size; |
|
rc = ksmbd_crypt_message(conn, iov, 2, 0); |
|
if (rc) |
|
return rc; |
|
|
|
memmove(buf + 4, iov[1].iov_base, buf_data_size); |
|
hdr = (struct smb2_hdr *)buf; |
|
hdr->smb2_buf_length = cpu_to_be32(buf_data_size); |
|
|
|
return rc; |
|
} |
|
|
|
bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work) |
|
{ |
|
struct ksmbd_conn *conn = work->conn; |
|
struct smb2_hdr *rsp = work->response_buf; |
|
|
|
if (conn->dialect < SMB30_PROT_ID) |
|
return false; |
|
|
|
if (work->next_smb2_rcv_hdr_off) |
|
rsp = ksmbd_resp_buf_next(work); |
|
|
|
if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && |
|
rsp->Status == STATUS_SUCCESS) |
|
return true; |
|
return false; |
|
}
|
|
|