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6457 lines
187 KiB
6457 lines
187 KiB
/* |
|
* fs/cifs/cifssmb.c |
|
* |
|
* Copyright (C) International Business Machines Corp., 2002,2010 |
|
* Author(s): Steve French ([email protected]) |
|
* |
|
* Contains the routines for constructing the SMB PDUs themselves |
|
* |
|
* This library is free software; you can redistribute it and/or modify |
|
* it under the terms of the GNU Lesser General Public License as published |
|
* by the Free Software Foundation; either version 2.1 of the License, or |
|
* (at your option) any later version. |
|
* |
|
* This library is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
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* the GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
|
* along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|
*/ |
|
|
|
/* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ |
|
/* These are mostly routines that operate on a pathname, or on a tree id */ |
|
/* (mounted volume), but there are eight handle based routines which must be */ |
|
/* treated slightly differently for reconnection purposes since we never */ |
|
/* want to reuse a stale file handle and only the caller knows the file info */ |
|
|
|
#include <linux/fs.h> |
|
#include <linux/kernel.h> |
|
#include <linux/vfs.h> |
|
#include <linux/slab.h> |
|
#include <linux/posix_acl_xattr.h> |
|
#include <linux/pagemap.h> |
|
#include <linux/swap.h> |
|
#include <linux/task_io_accounting_ops.h> |
|
#include <linux/uaccess.h> |
|
#include "cifspdu.h" |
|
#include "cifsglob.h" |
|
#include "cifsacl.h" |
|
#include "cifsproto.h" |
|
#include "cifs_unicode.h" |
|
#include "cifs_debug.h" |
|
#include "smb2proto.h" |
|
#include "fscache.h" |
|
#include "smbdirect.h" |
|
#ifdef CONFIG_CIFS_DFS_UPCALL |
|
#include "dfs_cache.h" |
|
#endif |
|
|
|
#ifdef CONFIG_CIFS_POSIX |
|
static struct { |
|
int index; |
|
char *name; |
|
} protocols[] = { |
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH |
|
{LANMAN_PROT, "\2LM1.2X002"}, |
|
{LANMAN2_PROT, "\2LANMAN2.1"}, |
|
#endif /* weak password hashing for legacy clients */ |
|
{CIFS_PROT, "\2NT LM 0.12"}, |
|
{POSIX_PROT, "\2POSIX 2"}, |
|
{BAD_PROT, "\2"} |
|
}; |
|
#else |
|
static struct { |
|
int index; |
|
char *name; |
|
} protocols[] = { |
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH |
|
{LANMAN_PROT, "\2LM1.2X002"}, |
|
{LANMAN2_PROT, "\2LANMAN2.1"}, |
|
#endif /* weak password hashing for legacy clients */ |
|
{CIFS_PROT, "\2NT LM 0.12"}, |
|
{BAD_PROT, "\2"} |
|
}; |
|
#endif |
|
|
|
/* define the number of elements in the cifs dialect array */ |
|
#ifdef CONFIG_CIFS_POSIX |
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH |
|
#define CIFS_NUM_PROT 4 |
|
#else |
|
#define CIFS_NUM_PROT 2 |
|
#endif /* CIFS_WEAK_PW_HASH */ |
|
#else /* not posix */ |
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH |
|
#define CIFS_NUM_PROT 3 |
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#else |
|
#define CIFS_NUM_PROT 1 |
|
#endif /* CONFIG_CIFS_WEAK_PW_HASH */ |
|
#endif /* CIFS_POSIX */ |
|
|
|
/* |
|
* Mark as invalid, all open files on tree connections since they |
|
* were closed when session to server was lost. |
|
*/ |
|
void |
|
cifs_mark_open_files_invalid(struct cifs_tcon *tcon) |
|
{ |
|
struct cifsFileInfo *open_file = NULL; |
|
struct list_head *tmp; |
|
struct list_head *tmp1; |
|
|
|
/* list all files open on tree connection and mark them invalid */ |
|
spin_lock(&tcon->open_file_lock); |
|
list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
|
open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
|
open_file->invalidHandle = true; |
|
open_file->oplock_break_cancelled = true; |
|
} |
|
spin_unlock(&tcon->open_file_lock); |
|
|
|
mutex_lock(&tcon->crfid.fid_mutex); |
|
tcon->crfid.is_valid = false; |
|
/* cached handle is not valid, so SMB2_CLOSE won't be sent below */ |
|
close_shroot_lease_locked(&tcon->crfid); |
|
memset(tcon->crfid.fid, 0, sizeof(struct cifs_fid)); |
|
mutex_unlock(&tcon->crfid.fid_mutex); |
|
|
|
/* |
|
* BB Add call to invalidate_inodes(sb) for all superblocks mounted |
|
* to this tcon. |
|
*/ |
|
} |
|
|
|
/* reconnect the socket, tcon, and smb session if needed */ |
|
static int |
|
cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
|
{ |
|
int rc; |
|
struct cifs_ses *ses; |
|
struct TCP_Server_Info *server; |
|
struct nls_table *nls_codepage; |
|
int retries; |
|
|
|
/* |
|
* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for |
|
* tcp and smb session status done differently for those three - in the |
|
* calling routine |
|
*/ |
|
if (!tcon) |
|
return 0; |
|
|
|
ses = tcon->ses; |
|
server = ses->server; |
|
|
|
/* |
|
* only tree disconnect, open, and write, (and ulogoff which does not |
|
* have tcon) are allowed as we start force umount |
|
*/ |
|
if (tcon->tidStatus == CifsExiting) { |
|
if (smb_command != SMB_COM_WRITE_ANDX && |
|
smb_command != SMB_COM_OPEN_ANDX && |
|
smb_command != SMB_COM_TREE_DISCONNECT) { |
|
cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
|
smb_command); |
|
return -ENODEV; |
|
} |
|
} |
|
|
|
retries = server->nr_targets; |
|
|
|
/* |
|
* Give demultiplex thread up to 10 seconds to each target available for |
|
* reconnect -- should be greater than cifs socket timeout which is 7 |
|
* seconds. |
|
*/ |
|
while (server->tcpStatus == CifsNeedReconnect) { |
|
rc = wait_event_interruptible_timeout(server->response_q, |
|
(server->tcpStatus != CifsNeedReconnect), |
|
10 * HZ); |
|
if (rc < 0) { |
|
cifs_dbg(FYI, "%s: aborting reconnect due to a received signal by the process\n", |
|
__func__); |
|
return -ERESTARTSYS; |
|
} |
|
|
|
/* are we still trying to reconnect? */ |
|
if (server->tcpStatus != CifsNeedReconnect) |
|
break; |
|
|
|
if (retries && --retries) |
|
continue; |
|
|
|
/* |
|
* on "soft" mounts we wait once. Hard mounts keep |
|
* retrying until process is killed or server comes |
|
* back on-line |
|
*/ |
|
if (!tcon->retry) { |
|
cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n"); |
|
return -EHOSTDOWN; |
|
} |
|
retries = server->nr_targets; |
|
} |
|
|
|
if (!ses->need_reconnect && !tcon->need_reconnect) |
|
return 0; |
|
|
|
nls_codepage = load_nls_default(); |
|
|
|
/* |
|
* need to prevent multiple threads trying to simultaneously |
|
* reconnect the same SMB session |
|
*/ |
|
mutex_lock(&ses->session_mutex); |
|
|
|
/* |
|
* Recheck after acquire mutex. If another thread is negotiating |
|
* and the server never sends an answer the socket will be closed |
|
* and tcpStatus set to reconnect. |
|
*/ |
|
if (server->tcpStatus == CifsNeedReconnect) { |
|
rc = -EHOSTDOWN; |
|
mutex_unlock(&ses->session_mutex); |
|
goto out; |
|
} |
|
|
|
rc = cifs_negotiate_protocol(0, ses); |
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if (rc == 0 && ses->need_reconnect) |
|
rc = cifs_setup_session(0, ses, nls_codepage); |
|
|
|
/* do we need to reconnect tcon? */ |
|
if (rc || !tcon->need_reconnect) { |
|
mutex_unlock(&ses->session_mutex); |
|
goto out; |
|
} |
|
|
|
cifs_mark_open_files_invalid(tcon); |
|
rc = cifs_tree_connect(0, tcon, nls_codepage); |
|
mutex_unlock(&ses->session_mutex); |
|
cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
|
|
|
if (rc) { |
|
pr_warn_once("reconnect tcon failed rc = %d\n", rc); |
|
goto out; |
|
} |
|
|
|
atomic_inc(&tconInfoReconnectCount); |
|
|
|
/* tell server Unix caps we support */ |
|
if (cap_unix(ses)) |
|
reset_cifs_unix_caps(0, tcon, NULL, NULL); |
|
|
|
/* |
|
* Removed call to reopen open files here. It is safer (and faster) to |
|
* reopen files one at a time as needed in read and write. |
|
* |
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* FIXME: what about file locks? don't we need to reclaim them ASAP? |
|
*/ |
|
|
|
out: |
|
/* |
|
* Check if handle based operation so we know whether we can continue |
|
* or not without returning to caller to reset file handle |
|
*/ |
|
switch (smb_command) { |
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case SMB_COM_READ_ANDX: |
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case SMB_COM_WRITE_ANDX: |
|
case SMB_COM_CLOSE: |
|
case SMB_COM_FIND_CLOSE2: |
|
case SMB_COM_LOCKING_ANDX: |
|
rc = -EAGAIN; |
|
} |
|
|
|
unload_nls(nls_codepage); |
|
return rc; |
|
} |
|
|
|
/* Allocate and return pointer to an SMB request buffer, and set basic |
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SMB information in the SMB header. If the return code is zero, this |
|
function must have filled in request_buf pointer */ |
|
static int |
|
small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
|
void **request_buf) |
|
{ |
|
int rc; |
|
|
|
rc = cifs_reconnect_tcon(tcon, smb_command); |
|
if (rc) |
|
return rc; |
|
|
|
*request_buf = cifs_small_buf_get(); |
|
if (*request_buf == NULL) { |
|
/* BB should we add a retry in here if not a writepage? */ |
|
return -ENOMEM; |
|
} |
|
|
|
header_assemble((struct smb_hdr *) *request_buf, smb_command, |
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tcon, wct); |
|
|
|
if (tcon != NULL) |
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cifs_stats_inc(&tcon->num_smbs_sent); |
|
|
|
return 0; |
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} |
|
|
|
int |
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small_smb_init_no_tc(const int smb_command, const int wct, |
|
struct cifs_ses *ses, void **request_buf) |
|
{ |
|
int rc; |
|
struct smb_hdr *buffer; |
|
|
|
rc = small_smb_init(smb_command, wct, NULL, request_buf); |
|
if (rc) |
|
return rc; |
|
|
|
buffer = (struct smb_hdr *)*request_buf; |
|
buffer->Mid = get_next_mid(ses->server); |
|
if (ses->capabilities & CAP_UNICODE) |
|
buffer->Flags2 |= SMBFLG2_UNICODE; |
|
if (ses->capabilities & CAP_STATUS32) |
|
buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
|
|
|
/* uid, tid can stay at zero as set in header assemble */ |
|
|
|
/* BB add support for turning on the signing when |
|
this function is used after 1st of session setup requests */ |
|
|
|
return rc; |
|
} |
|
|
|
/* If the return code is zero, this function must fill in request_buf pointer */ |
|
static int |
|
__smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
|
void **request_buf, void **response_buf) |
|
{ |
|
*request_buf = cifs_buf_get(); |
|
if (*request_buf == NULL) { |
|
/* BB should we add a retry in here if not a writepage? */ |
|
return -ENOMEM; |
|
} |
|
/* Although the original thought was we needed the response buf for */ |
|
/* potential retries of smb operations it turns out we can determine */ |
|
/* from the mid flags when the request buffer can be resent without */ |
|
/* having to use a second distinct buffer for the response */ |
|
if (response_buf) |
|
*response_buf = *request_buf; |
|
|
|
header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, |
|
wct); |
|
|
|
if (tcon != NULL) |
|
cifs_stats_inc(&tcon->num_smbs_sent); |
|
|
|
return 0; |
|
} |
|
|
|
/* If the return code is zero, this function must fill in request_buf pointer */ |
|
static int |
|
smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
|
void **request_buf, void **response_buf) |
|
{ |
|
int rc; |
|
|
|
rc = cifs_reconnect_tcon(tcon, smb_command); |
|
if (rc) |
|
return rc; |
|
|
|
return __smb_init(smb_command, wct, tcon, request_buf, response_buf); |
|
} |
|
|
|
static int |
|
smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
|
void **request_buf, void **response_buf) |
|
{ |
|
if (tcon->ses->need_reconnect || tcon->need_reconnect) |
|
return -EHOSTDOWN; |
|
|
|
return __smb_init(smb_command, wct, tcon, request_buf, response_buf); |
|
} |
|
|
|
static int validate_t2(struct smb_t2_rsp *pSMB) |
|
{ |
|
unsigned int total_size; |
|
|
|
/* check for plausible wct */ |
|
if (pSMB->hdr.WordCount < 10) |
|
goto vt2_err; |
|
|
|
/* check for parm and data offset going beyond end of smb */ |
|
if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
|
get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) |
|
goto vt2_err; |
|
|
|
total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
|
if (total_size >= 512) |
|
goto vt2_err; |
|
|
|
/* check that bcc is at least as big as parms + data, and that it is |
|
* less than negotiated smb buffer |
|
*/ |
|
total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
|
if (total_size > get_bcc(&pSMB->hdr) || |
|
total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) |
|
goto vt2_err; |
|
|
|
return 0; |
|
vt2_err: |
|
cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
|
sizeof(struct smb_t2_rsp) + 16); |
|
return -EINVAL; |
|
} |
|
|
|
static int |
|
decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
|
{ |
|
int rc = 0; |
|
u16 count; |
|
char *guid = pSMBr->u.extended_response.GUID; |
|
struct TCP_Server_Info *server = ses->server; |
|
|
|
count = get_bcc(&pSMBr->hdr); |
|
if (count < SMB1_CLIENT_GUID_SIZE) |
|
return -EIO; |
|
|
|
spin_lock(&cifs_tcp_ses_lock); |
|
if (server->srv_count > 1) { |
|
spin_unlock(&cifs_tcp_ses_lock); |
|
if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { |
|
cifs_dbg(FYI, "server UID changed\n"); |
|
memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); |
|
} |
|
} else { |
|
spin_unlock(&cifs_tcp_ses_lock); |
|
memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); |
|
} |
|
|
|
if (count == SMB1_CLIENT_GUID_SIZE) { |
|
server->sec_ntlmssp = true; |
|
} else { |
|
count -= SMB1_CLIENT_GUID_SIZE; |
|
rc = decode_negTokenInit( |
|
pSMBr->u.extended_response.SecurityBlob, count, server); |
|
if (rc != 1) |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int |
|
cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
|
{ |
|
bool srv_sign_required = server->sec_mode & server->vals->signing_required; |
|
bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; |
|
bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; |
|
|
|
/* |
|
* Is signing required by mnt options? If not then check |
|
* global_secflags to see if it is there. |
|
*/ |
|
if (!mnt_sign_required) |
|
mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == |
|
CIFSSEC_MUST_SIGN); |
|
|
|
/* |
|
* If signing is required then it's automatically enabled too, |
|
* otherwise, check to see if the secflags allow it. |
|
*/ |
|
mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : |
|
(global_secflags & CIFSSEC_MAY_SIGN); |
|
|
|
/* If server requires signing, does client allow it? */ |
|
if (srv_sign_required) { |
|
if (!mnt_sign_enabled) { |
|
cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!\n"); |
|
return -ENOTSUPP; |
|
} |
|
server->sign = true; |
|
} |
|
|
|
/* If client requires signing, does server allow it? */ |
|
if (mnt_sign_required) { |
|
if (!srv_sign_enabled) { |
|
cifs_dbg(VFS, "Server does not support signing!\n"); |
|
return -ENOTSUPP; |
|
} |
|
server->sign = true; |
|
} |
|
|
|
if (cifs_rdma_enabled(server) && server->sign) |
|
cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled\n"); |
|
|
|
return 0; |
|
} |
|
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH |
|
static int |
|
decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
|
{ |
|
__s16 tmp; |
|
struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; |
|
|
|
if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) |
|
return -EOPNOTSUPP; |
|
|
|
server->sec_mode = le16_to_cpu(rsp->SecurityMode); |
|
server->maxReq = min_t(unsigned int, |
|
le16_to_cpu(rsp->MaxMpxCount), |
|
cifs_max_pending); |
|
set_credits(server, server->maxReq); |
|
server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
|
/* set up max_read for readpages check */ |
|
server->max_read = server->maxBuf; |
|
/* even though we do not use raw we might as well set this |
|
accurately, in case we ever find a need for it */ |
|
if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { |
|
server->max_rw = 0xFF00; |
|
server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; |
|
} else { |
|
server->max_rw = 0;/* do not need to use raw anyway */ |
|
server->capabilities = CAP_MPX_MODE; |
|
} |
|
tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); |
|
if (tmp == -1) { |
|
/* OS/2 often does not set timezone therefore |
|
* we must use server time to calc time zone. |
|
* Could deviate slightly from the right zone. |
|
* Smallest defined timezone difference is 15 minutes |
|
* (i.e. Nepal). Rounding up/down is done to match |
|
* this requirement. |
|
*/ |
|
int val, seconds, remain, result; |
|
struct timespec64 ts; |
|
time64_t utc = ktime_get_real_seconds(); |
|
ts = cnvrtDosUnixTm(rsp->SrvTime.Date, |
|
rsp->SrvTime.Time, 0); |
|
cifs_dbg(FYI, "SrvTime %lld sec since 1970 (utc: %lld) diff: %lld\n", |
|
ts.tv_sec, utc, |
|
utc - ts.tv_sec); |
|
val = (int)(utc - ts.tv_sec); |
|
seconds = abs(val); |
|
result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; |
|
remain = seconds % MIN_TZ_ADJ; |
|
if (remain >= (MIN_TZ_ADJ / 2)) |
|
result += MIN_TZ_ADJ; |
|
if (val < 0) |
|
result = -result; |
|
server->timeAdj = result; |
|
} else { |
|
server->timeAdj = (int)tmp; |
|
server->timeAdj *= 60; /* also in seconds */ |
|
} |
|
cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj); |
|
|
|
|
|
/* BB get server time for time conversions and add |
|
code to use it and timezone since this is not UTC */ |
|
|
|
if (rsp->EncryptionKeyLength == |
|
cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { |
|
memcpy(server->cryptkey, rsp->EncryptionKey, |
|
CIFS_CRYPTO_KEY_SIZE); |
|
} else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
|
return -EIO; /* need cryptkey unless plain text */ |
|
} |
|
|
|
cifs_dbg(FYI, "LANMAN negotiated\n"); |
|
return 0; |
|
} |
|
#else |
|
static inline int |
|
decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
|
{ |
|
cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n"); |
|
return -EOPNOTSUPP; |
|
} |
|
#endif |
|
|
|
static bool |
|
should_set_ext_sec_flag(enum securityEnum sectype) |
|
{ |
|
switch (sectype) { |
|
case RawNTLMSSP: |
|
case Kerberos: |
|
return true; |
|
case Unspecified: |
|
if (global_secflags & |
|
(CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) |
|
return true; |
|
fallthrough; |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
int |
|
CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
|
{ |
|
NEGOTIATE_REQ *pSMB; |
|
NEGOTIATE_RSP *pSMBr; |
|
int rc = 0; |
|
int bytes_returned; |
|
int i; |
|
struct TCP_Server_Info *server = ses->server; |
|
u16 count; |
|
|
|
if (!server) { |
|
WARN(1, "%s: server is NULL!\n", __func__); |
|
return -EIO; |
|
} |
|
|
|
rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
|
(void **) &pSMB, (void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Mid = get_next_mid(server); |
|
pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
|
|
|
if (should_set_ext_sec_flag(ses->sectype)) { |
|
cifs_dbg(FYI, "Requesting extended security\n"); |
|
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
|
} |
|
|
|
count = 0; |
|
/* |
|
* We know that all the name entries in the protocols array |
|
* are short (< 16 bytes anyway) and are NUL terminated. |
|
*/ |
|
for (i = 0; i < CIFS_NUM_PROT; i++) { |
|
size_t len = strlen(protocols[i].name) + 1; |
|
|
|
memcpy(pSMB->DialectsArray+count, protocols[i].name, len); |
|
count += len; |
|
} |
|
inc_rfc1001_len(pSMB, count); |
|
pSMB->ByteCount = cpu_to_le16(count); |
|
|
|
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc != 0) |
|
goto neg_err_exit; |
|
|
|
server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
|
cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
|
/* Check wct = 1 error case */ |
|
if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
|
/* core returns wct = 1, but we do not ask for core - otherwise |
|
small wct just comes when dialect index is -1 indicating we |
|
could not negotiate a common dialect */ |
|
rc = -EOPNOTSUPP; |
|
goto neg_err_exit; |
|
} else if (pSMBr->hdr.WordCount == 13) { |
|
server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
|
rc = decode_lanman_negprot_rsp(server, pSMBr); |
|
goto signing_check; |
|
} else if (pSMBr->hdr.WordCount != 17) { |
|
/* unknown wct */ |
|
rc = -EOPNOTSUPP; |
|
goto neg_err_exit; |
|
} |
|
/* else wct == 17, NTLM or better */ |
|
|
|
server->sec_mode = pSMBr->SecurityMode; |
|
if ((server->sec_mode & SECMODE_USER) == 0) |
|
cifs_dbg(FYI, "share mode security\n"); |
|
|
|
/* one byte, so no need to convert this or EncryptionKeyLen from |
|
little endian */ |
|
server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
|
cifs_max_pending); |
|
set_credits(server, server->maxReq); |
|
/* probably no need to store and check maxvcs */ |
|
server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
|
/* set up max_read for readpages check */ |
|
server->max_read = server->maxBuf; |
|
server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
|
cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
|
server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
|
server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
|
server->timeAdj *= 60; |
|
|
|
if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
|
server->negflavor = CIFS_NEGFLAVOR_UNENCAP; |
|
memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
|
CIFS_CRYPTO_KEY_SIZE); |
|
} else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
|
server->capabilities & CAP_EXTENDED_SECURITY) { |
|
server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
|
rc = decode_ext_sec_blob(ses, pSMBr); |
|
} else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
|
rc = -EIO; /* no crypt key only if plain text pwd */ |
|
} else { |
|
server->negflavor = CIFS_NEGFLAVOR_UNENCAP; |
|
server->capabilities &= ~CAP_EXTENDED_SECURITY; |
|
} |
|
|
|
signing_check: |
|
if (!rc) |
|
rc = cifs_enable_signing(server, ses->sign); |
|
neg_err_exit: |
|
cifs_buf_release(pSMB); |
|
|
|
cifs_dbg(FYI, "negprot rc %d\n", rc); |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
|
{ |
|
struct smb_hdr *smb_buffer; |
|
int rc = 0; |
|
|
|
cifs_dbg(FYI, "In tree disconnect\n"); |
|
|
|
/* BB: do we need to check this? These should never be NULL. */ |
|
if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) |
|
return -EIO; |
|
|
|
/* |
|
* No need to return error on this operation if tid invalidated and |
|
* closed on server already e.g. due to tcp session crashing. Also, |
|
* the tcon is no longer on the list, so no need to take lock before |
|
* checking this. |
|
*/ |
|
if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
|
return 0; |
|
|
|
rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
|
(void **)&smb_buffer); |
|
if (rc) |
|
return rc; |
|
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
|
cifs_small_buf_release(smb_buffer); |
|
if (rc) |
|
cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
|
|
|
/* No need to return error on this operation if tid invalidated and |
|
closed on server already e.g. due to tcp session crashing */ |
|
if (rc == -EAGAIN) |
|
rc = 0; |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* This is a no-op for now. We're not really interested in the reply, but |
|
* rather in the fact that the server sent one and that server->lstrp |
|
* gets updated. |
|
* |
|
* FIXME: maybe we should consider checking that the reply matches request? |
|
*/ |
|
static void |
|
cifs_echo_callback(struct mid_q_entry *mid) |
|
{ |
|
struct TCP_Server_Info *server = mid->callback_data; |
|
struct cifs_credits credits = { .value = 1, .instance = 0 }; |
|
|
|
DeleteMidQEntry(mid); |
|
add_credits(server, &credits, CIFS_ECHO_OP); |
|
} |
|
|
|
int |
|
CIFSSMBEcho(struct TCP_Server_Info *server) |
|
{ |
|
ECHO_REQ *smb; |
|
int rc = 0; |
|
struct kvec iov[2]; |
|
struct smb_rqst rqst = { .rq_iov = iov, |
|
.rq_nvec = 2 }; |
|
|
|
cifs_dbg(FYI, "In echo request\n"); |
|
|
|
rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); |
|
if (rc) |
|
return rc; |
|
|
|
if (server->capabilities & CAP_UNICODE) |
|
smb->hdr.Flags2 |= SMBFLG2_UNICODE; |
|
|
|
/* set up echo request */ |
|
smb->hdr.Tid = 0xffff; |
|
smb->hdr.WordCount = 1; |
|
put_unaligned_le16(1, &smb->EchoCount); |
|
put_bcc(1, &smb->hdr); |
|
smb->Data[0] = 'a'; |
|
inc_rfc1001_len(smb, 3); |
|
|
|
iov[0].iov_len = 4; |
|
iov[0].iov_base = smb; |
|
iov[1].iov_len = get_rfc1002_length(smb); |
|
iov[1].iov_base = (char *)smb + 4; |
|
|
|
rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
|
server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL); |
|
if (rc) |
|
cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
|
|
|
cifs_small_buf_release(smb); |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
|
{ |
|
LOGOFF_ANDX_REQ *pSMB; |
|
int rc = 0; |
|
|
|
cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
|
|
|
/* |
|
* BB: do we need to check validity of ses and server? They should |
|
* always be valid since we have an active reference. If not, that |
|
* should probably be a BUG() |
|
*/ |
|
if (!ses || !ses->server) |
|
return -EIO; |
|
|
|
mutex_lock(&ses->session_mutex); |
|
if (ses->need_reconnect) |
|
goto session_already_dead; /* no need to send SMBlogoff if uid |
|
already closed due to reconnect */ |
|
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
|
if (rc) { |
|
mutex_unlock(&ses->session_mutex); |
|
return rc; |
|
} |
|
|
|
pSMB->hdr.Mid = get_next_mid(ses->server); |
|
|
|
if (ses->server->sign) |
|
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
|
|
|
pSMB->hdr.Uid = ses->Suid; |
|
|
|
pSMB->AndXCommand = 0xFF; |
|
rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
session_already_dead: |
|
mutex_unlock(&ses->session_mutex); |
|
|
|
/* if session dead then we do not need to do ulogoff, |
|
since server closed smb session, no sense reporting |
|
error */ |
|
if (rc == -EAGAIN) |
|
rc = 0; |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fileName, __u16 type, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
TRANSACTION2_SPI_REQ *pSMB = NULL; |
|
TRANSACTION2_SPI_RSP *pSMBr = NULL; |
|
struct unlink_psx_rq *pRqD; |
|
int name_len; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, param_offset, offset, byte_count; |
|
|
|
cifs_dbg(FYI, "In POSIX delete\n"); |
|
PsxDelete: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, fileName); |
|
} |
|
|
|
params = 6 + name_len; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = 0; /* BB double check this with jra */ |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
|
|
/* Setup pointer to Request Data (inode type) */ |
|
pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); |
|
pRqD->type = cpu_to_le16(type); |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); |
|
|
|
pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); |
|
pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
|
cifs_buf_release(pSMB); |
|
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
|
|
|
if (rc == -EAGAIN) |
|
goto PsxDelete; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
DELETE_FILE_REQ *pSMB = NULL; |
|
DELETE_FILE_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
DelFileRetry: |
|
rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
|
PATH_MAX, cifs_sb->local_nls, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->fileName, name); |
|
} |
|
pSMB->SearchAttributes = |
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); |
|
pSMB->BufferFormat = 0x04; |
|
inc_rfc1001_len(pSMB, name_len + 1); |
|
pSMB->ByteCount = cpu_to_le16(name_len + 1); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
|
if (rc) |
|
cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto DelFileRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
DELETE_DIRECTORY_REQ *pSMB = NULL; |
|
DELETE_DIRECTORY_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
|
RmDirRetry: |
|
rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
|
PATH_MAX, cifs_sb->local_nls, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->DirName, name); |
|
} |
|
|
|
pSMB->BufferFormat = 0x04; |
|
inc_rfc1001_len(pSMB, name_len + 1); |
|
pSMB->ByteCount = cpu_to_le16(name_len + 1); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
|
if (rc) |
|
cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto RmDirRetry; |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode, |
|
struct cifs_tcon *tcon, const char *name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
int rc = 0; |
|
CREATE_DIRECTORY_REQ *pSMB = NULL; |
|
CREATE_DIRECTORY_RSP *pSMBr = NULL; |
|
int bytes_returned; |
|
int name_len; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
|
MkDirRetry: |
|
rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
|
PATH_MAX, cifs_sb->local_nls, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->DirName, name); |
|
} |
|
|
|
pSMB->BufferFormat = 0x04; |
|
inc_rfc1001_len(pSMB, name_len + 1); |
|
pSMB->ByteCount = cpu_to_le16(name_len + 1); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
|
if (rc) |
|
cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto MkDirRetry; |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
|
__u32 posix_flags, __u64 mode, __u16 *netfid, |
|
FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, |
|
const char *name, const struct nls_table *nls_codepage, |
|
int remap) |
|
{ |
|
TRANSACTION2_SPI_REQ *pSMB = NULL; |
|
TRANSACTION2_SPI_RSP *pSMBr = NULL; |
|
int name_len; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, param_offset, offset, byte_count, count; |
|
OPEN_PSX_REQ *pdata; |
|
OPEN_PSX_RSP *psx_rsp; |
|
|
|
cifs_dbg(FYI, "In POSIX Create\n"); |
|
PsxCreat: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, name); |
|
} |
|
|
|
params = 6 + name_len; |
|
count = sizeof(OPEN_PSX_REQ); |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
|
pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
|
pdata->Permissions = cpu_to_le64(mode); |
|
pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
|
pdata->OpenFlags = cpu_to_le32(*pOplock); |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
|
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Posix create returned %d\n", rc); |
|
goto psx_create_err; |
|
} |
|
|
|
cifs_dbg(FYI, "copying inode info\n"); |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
|
rc = -EIO; /* bad smb */ |
|
goto psx_create_err; |
|
} |
|
|
|
/* copy return information to pRetData */ |
|
psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
|
+ le16_to_cpu(pSMBr->t2.DataOffset)); |
|
|
|
*pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
|
if (netfid) |
|
*netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
|
/* Let caller know file was created so we can set the mode. */ |
|
/* Do we care about the CreateAction in any other cases? */ |
|
if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
|
*pOplock |= CIFS_CREATE_ACTION; |
|
/* check to make sure response data is there */ |
|
if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
|
pRetData->Type = cpu_to_le32(-1); /* unknown */ |
|
cifs_dbg(NOISY, "unknown type\n"); |
|
} else { |
|
if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
|
+ sizeof(FILE_UNIX_BASIC_INFO)) { |
|
cifs_dbg(VFS, "Open response data too small\n"); |
|
pRetData->Type = cpu_to_le32(-1); |
|
goto psx_create_err; |
|
} |
|
memcpy((char *) pRetData, |
|
(char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
|
sizeof(FILE_UNIX_BASIC_INFO)); |
|
} |
|
|
|
psx_create_err: |
|
cifs_buf_release(pSMB); |
|
|
|
if (posix_flags & SMB_O_DIRECTORY) |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
|
else |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
|
|
|
if (rc == -EAGAIN) |
|
goto PsxCreat; |
|
|
|
return rc; |
|
} |
|
|
|
static __u16 convert_disposition(int disposition) |
|
{ |
|
__u16 ofun = 0; |
|
|
|
switch (disposition) { |
|
case FILE_SUPERSEDE: |
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; |
|
break; |
|
case FILE_OPEN: |
|
ofun = SMBOPEN_OAPPEND; |
|
break; |
|
case FILE_CREATE: |
|
ofun = SMBOPEN_OCREATE; |
|
break; |
|
case FILE_OPEN_IF: |
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; |
|
break; |
|
case FILE_OVERWRITE: |
|
ofun = SMBOPEN_OTRUNC; |
|
break; |
|
case FILE_OVERWRITE_IF: |
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; |
|
break; |
|
default: |
|
cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
|
ofun = SMBOPEN_OAPPEND; /* regular open */ |
|
} |
|
return ofun; |
|
} |
|
|
|
static int |
|
access_flags_to_smbopen_mode(const int access_flags) |
|
{ |
|
int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); |
|
|
|
if (masked_flags == GENERIC_READ) |
|
return SMBOPEN_READ; |
|
else if (masked_flags == GENERIC_WRITE) |
|
return SMBOPEN_WRITE; |
|
|
|
/* just go for read/write */ |
|
return SMBOPEN_READWRITE; |
|
} |
|
|
|
int |
|
SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fileName, const int openDisposition, |
|
const int access_flags, const int create_options, __u16 *netfid, |
|
int *pOplock, FILE_ALL_INFO *pfile_info, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
int rc = -EACCES; |
|
OPENX_REQ *pSMB = NULL; |
|
OPENX_RSP *pSMBr = NULL; |
|
int bytes_returned; |
|
int name_len; |
|
__u16 count; |
|
|
|
OldOpenRetry: |
|
rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->AndXCommand = 0xFF; /* none */ |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
count = 1; /* account for one byte pad to word boundary */ |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
|
fileName, PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
count = 0; /* no pad */ |
|
name_len = copy_path_name(pSMB->fileName, fileName); |
|
} |
|
if (*pOplock & REQ_OPLOCK) |
|
pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); |
|
else if (*pOplock & REQ_BATCHOPLOCK) |
|
pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
|
|
|
pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
|
pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
|
pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
|
/* set file as system file if special file such |
|
as fifo and server expecting SFU style and |
|
no Unix extensions */ |
|
|
|
if (create_options & CREATE_OPTION_SPECIAL) |
|
pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); |
|
else /* BB FIXME BB */ |
|
pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); |
|
|
|
if (create_options & CREATE_OPTION_READONLY) |
|
pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); |
|
|
|
/* BB FIXME BB */ |
|
/* pSMB->CreateOptions = cpu_to_le32(create_options & |
|
CREATE_OPTIONS_MASK); */ |
|
/* BB FIXME END BB */ |
|
|
|
pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); |
|
pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
|
count += name_len; |
|
inc_rfc1001_len(pSMB, count); |
|
|
|
pSMB->ByteCount = cpu_to_le16(count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *)pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
|
if (rc) { |
|
cifs_dbg(FYI, "Error in Open = %d\n", rc); |
|
} else { |
|
/* BB verify if wct == 15 */ |
|
|
|
/* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
|
|
|
*netfid = pSMBr->Fid; /* cifs fid stays in le */ |
|
/* Let caller know file was created so we can set the mode. */ |
|
/* Do we care about the CreateAction in any other cases? */ |
|
/* BB FIXME BB */ |
|
/* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
|
*pOplock |= CIFS_CREATE_ACTION; */ |
|
/* BB FIXME END */ |
|
|
|
if (pfile_info) { |
|
pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
|
pfile_info->LastAccessTime = 0; /* BB fixme */ |
|
pfile_info->LastWriteTime = 0; /* BB fixme */ |
|
pfile_info->ChangeTime = 0; /* BB fixme */ |
|
pfile_info->Attributes = |
|
cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
|
/* the file_info buf is endian converted by caller */ |
|
pfile_info->AllocationSize = |
|
cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); |
|
pfile_info->EndOfFile = pfile_info->AllocationSize; |
|
pfile_info->NumberOfLinks = cpu_to_le32(1); |
|
pfile_info->DeletePending = 0; |
|
} |
|
} |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto OldOpenRetry; |
|
return rc; |
|
} |
|
|
|
int |
|
CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
|
FILE_ALL_INFO *buf) |
|
{ |
|
int rc; |
|
OPEN_REQ *req = NULL; |
|
OPEN_RSP *rsp = NULL; |
|
int bytes_returned; |
|
int name_len; |
|
__u16 count; |
|
struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
|
struct cifs_tcon *tcon = oparms->tcon; |
|
int remap = cifs_remap(cifs_sb); |
|
const struct nls_table *nls = cifs_sb->local_nls; |
|
int create_options = oparms->create_options; |
|
int desired_access = oparms->desired_access; |
|
int disposition = oparms->disposition; |
|
const char *path = oparms->path; |
|
|
|
openRetry: |
|
rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
|
(void **)&rsp); |
|
if (rc) |
|
return rc; |
|
|
|
/* no commands go after this */ |
|
req->AndXCommand = 0xFF; |
|
|
|
if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
/* account for one byte pad to word boundary */ |
|
count = 1; |
|
name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), |
|
path, PATH_MAX, nls, remap); |
|
/* trailing null */ |
|
name_len++; |
|
name_len *= 2; |
|
req->NameLength = cpu_to_le16(name_len); |
|
} else { |
|
/* BB improve check for buffer overruns BB */ |
|
/* no pad */ |
|
count = 0; |
|
name_len = copy_path_name(req->fileName, path); |
|
req->NameLength = cpu_to_le16(name_len); |
|
} |
|
|
|
if (*oplock & REQ_OPLOCK) |
|
req->OpenFlags = cpu_to_le32(REQ_OPLOCK); |
|
else if (*oplock & REQ_BATCHOPLOCK) |
|
req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); |
|
|
|
req->DesiredAccess = cpu_to_le32(desired_access); |
|
req->AllocationSize = 0; |
|
|
|
/* |
|
* Set file as system file if special file such as fifo and server |
|
* expecting SFU style and no Unix extensions. |
|
*/ |
|
if (create_options & CREATE_OPTION_SPECIAL) |
|
req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
|
else |
|
req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
|
|
|
/* |
|
* XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case |
|
* sensitive checks for other servers such as Samba. |
|
*/ |
|
if (tcon->ses->capabilities & CAP_UNIX) |
|
req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
|
|
|
if (create_options & CREATE_OPTION_READONLY) |
|
req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
|
|
|
req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); |
|
req->CreateDisposition = cpu_to_le32(disposition); |
|
req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
|
|
|
/* BB Expirement with various impersonation levels and verify */ |
|
req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
|
req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; |
|
|
|
count += name_len; |
|
inc_rfc1001_len(req, count); |
|
|
|
req->ByteCount = cpu_to_le16(count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, |
|
(struct smb_hdr *)rsp, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
|
if (rc) { |
|
cifs_dbg(FYI, "Error in Open = %d\n", rc); |
|
cifs_buf_release(req); |
|
if (rc == -EAGAIN) |
|
goto openRetry; |
|
return rc; |
|
} |
|
|
|
/* 1 byte no need to le_to_cpu */ |
|
*oplock = rsp->OplockLevel; |
|
/* cifs fid stays in le */ |
|
oparms->fid->netfid = rsp->Fid; |
|
oparms->fid->access = desired_access; |
|
|
|
/* Let caller know file was created so we can set the mode. */ |
|
/* Do we care about the CreateAction in any other cases? */ |
|
if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) |
|
*oplock |= CIFS_CREATE_ACTION; |
|
|
|
if (buf) { |
|
/* copy from CreationTime to Attributes */ |
|
memcpy((char *)buf, (char *)&rsp->CreationTime, 36); |
|
/* the file_info buf is endian converted by caller */ |
|
buf->AllocationSize = rsp->AllocationSize; |
|
buf->EndOfFile = rsp->EndOfFile; |
|
buf->NumberOfLinks = cpu_to_le32(1); |
|
buf->DeletePending = 0; |
|
} |
|
|
|
cifs_buf_release(req); |
|
return rc; |
|
} |
|
|
|
/* |
|
* Discard any remaining data in the current SMB. To do this, we borrow the |
|
* current bigbuf. |
|
*/ |
|
int |
|
cifs_discard_remaining_data(struct TCP_Server_Info *server) |
|
{ |
|
unsigned int rfclen = server->pdu_size; |
|
int remaining = rfclen + server->vals->header_preamble_size - |
|
server->total_read; |
|
|
|
while (remaining > 0) { |
|
int length; |
|
|
|
length = cifs_discard_from_socket(server, |
|
min_t(size_t, remaining, |
|
CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
|
if (length < 0) |
|
return length; |
|
server->total_read += length; |
|
remaining -= length; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
__cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid, |
|
bool malformed) |
|
{ |
|
int length; |
|
|
|
length = cifs_discard_remaining_data(server); |
|
dequeue_mid(mid, malformed); |
|
mid->resp_buf = server->smallbuf; |
|
server->smallbuf = NULL; |
|
return length; |
|
} |
|
|
|
static int |
|
cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
|
{ |
|
struct cifs_readdata *rdata = mid->callback_data; |
|
|
|
return __cifs_readv_discard(server, mid, rdata->result); |
|
} |
|
|
|
int |
|
cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
|
{ |
|
int length, len; |
|
unsigned int data_offset, data_len; |
|
struct cifs_readdata *rdata = mid->callback_data; |
|
char *buf = server->smallbuf; |
|
unsigned int buflen = server->pdu_size + |
|
server->vals->header_preamble_size; |
|
bool use_rdma_mr = false; |
|
|
|
cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n", |
|
__func__, mid->mid, rdata->offset, rdata->bytes); |
|
|
|
/* |
|
* read the rest of READ_RSP header (sans Data array), or whatever we |
|
* can if there's not enough data. At this point, we've read down to |
|
* the Mid. |
|
*/ |
|
len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
|
HEADER_SIZE(server) + 1; |
|
|
|
length = cifs_read_from_socket(server, |
|
buf + HEADER_SIZE(server) - 1, len); |
|
if (length < 0) |
|
return length; |
|
server->total_read += length; |
|
|
|
if (server->ops->is_session_expired && |
|
server->ops->is_session_expired(buf)) { |
|
cifs_reconnect(server); |
|
return -1; |
|
} |
|
|
|
if (server->ops->is_status_pending && |
|
server->ops->is_status_pending(buf, server)) { |
|
cifs_discard_remaining_data(server); |
|
return -1; |
|
} |
|
|
|
/* set up first two iov for signature check and to get credits */ |
|
rdata->iov[0].iov_base = buf; |
|
rdata->iov[0].iov_len = server->vals->header_preamble_size; |
|
rdata->iov[1].iov_base = buf + server->vals->header_preamble_size; |
|
rdata->iov[1].iov_len = |
|
server->total_read - server->vals->header_preamble_size; |
|
cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
|
rdata->iov[0].iov_base, rdata->iov[0].iov_len); |
|
cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n", |
|
rdata->iov[1].iov_base, rdata->iov[1].iov_len); |
|
|
|
/* Was the SMB read successful? */ |
|
rdata->result = server->ops->map_error(buf, false); |
|
if (rdata->result != 0) { |
|
cifs_dbg(FYI, "%s: server returned error %d\n", |
|
__func__, rdata->result); |
|
/* normal error on read response */ |
|
return __cifs_readv_discard(server, mid, false); |
|
} |
|
|
|
/* Is there enough to get to the rest of the READ_RSP header? */ |
|
if (server->total_read < server->vals->read_rsp_size) { |
|
cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n", |
|
__func__, server->total_read, |
|
server->vals->read_rsp_size); |
|
rdata->result = -EIO; |
|
return cifs_readv_discard(server, mid); |
|
} |
|
|
|
data_offset = server->ops->read_data_offset(buf) + |
|
server->vals->header_preamble_size; |
|
if (data_offset < server->total_read) { |
|
/* |
|
* win2k8 sometimes sends an offset of 0 when the read |
|
* is beyond the EOF. Treat it as if the data starts just after |
|
* the header. |
|
*/ |
|
cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
|
__func__, data_offset); |
|
data_offset = server->total_read; |
|
} else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { |
|
/* data_offset is beyond the end of smallbuf */ |
|
cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
|
__func__, data_offset); |
|
rdata->result = -EIO; |
|
return cifs_readv_discard(server, mid); |
|
} |
|
|
|
cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n", |
|
__func__, server->total_read, data_offset); |
|
|
|
len = data_offset - server->total_read; |
|
if (len > 0) { |
|
/* read any junk before data into the rest of smallbuf */ |
|
length = cifs_read_from_socket(server, |
|
buf + server->total_read, len); |
|
if (length < 0) |
|
return length; |
|
server->total_read += length; |
|
} |
|
|
|
/* how much data is in the response? */ |
|
#ifdef CONFIG_CIFS_SMB_DIRECT |
|
use_rdma_mr = rdata->mr; |
|
#endif |
|
data_len = server->ops->read_data_length(buf, use_rdma_mr); |
|
if (!use_rdma_mr && (data_offset + data_len > buflen)) { |
|
/* data_len is corrupt -- discard frame */ |
|
rdata->result = -EIO; |
|
return cifs_readv_discard(server, mid); |
|
} |
|
|
|
length = rdata->read_into_pages(server, rdata, data_len); |
|
if (length < 0) |
|
return length; |
|
|
|
server->total_read += length; |
|
|
|
cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n", |
|
server->total_read, buflen, data_len); |
|
|
|
/* discard anything left over */ |
|
if (server->total_read < buflen) |
|
return cifs_readv_discard(server, mid); |
|
|
|
dequeue_mid(mid, false); |
|
mid->resp_buf = server->smallbuf; |
|
server->smallbuf = NULL; |
|
return length; |
|
} |
|
|
|
static void |
|
cifs_readv_callback(struct mid_q_entry *mid) |
|
{ |
|
struct cifs_readdata *rdata = mid->callback_data; |
|
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); |
|
struct TCP_Server_Info *server = tcon->ses->server; |
|
struct smb_rqst rqst = { .rq_iov = rdata->iov, |
|
.rq_nvec = 2, |
|
.rq_pages = rdata->pages, |
|
.rq_offset = rdata->page_offset, |
|
.rq_npages = rdata->nr_pages, |
|
.rq_pagesz = rdata->pagesz, |
|
.rq_tailsz = rdata->tailsz }; |
|
struct cifs_credits credits = { .value = 1, .instance = 0 }; |
|
|
|
cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
|
__func__, mid->mid, mid->mid_state, rdata->result, |
|
rdata->bytes); |
|
|
|
switch (mid->mid_state) { |
|
case MID_RESPONSE_RECEIVED: |
|
/* result already set, check signature */ |
|
if (server->sign) { |
|
int rc = 0; |
|
|
|
rc = cifs_verify_signature(&rqst, server, |
|
mid->sequence_number); |
|
if (rc) |
|
cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
|
rc); |
|
} |
|
/* FIXME: should this be counted toward the initiating task? */ |
|
task_io_account_read(rdata->got_bytes); |
|
cifs_stats_bytes_read(tcon, rdata->got_bytes); |
|
break; |
|
case MID_REQUEST_SUBMITTED: |
|
case MID_RETRY_NEEDED: |
|
rdata->result = -EAGAIN; |
|
if (server->sign && rdata->got_bytes) |
|
/* reset bytes number since we can not check a sign */ |
|
rdata->got_bytes = 0; |
|
/* FIXME: should this be counted toward the initiating task? */ |
|
task_io_account_read(rdata->got_bytes); |
|
cifs_stats_bytes_read(tcon, rdata->got_bytes); |
|
break; |
|
default: |
|
rdata->result = -EIO; |
|
} |
|
|
|
queue_work(cifsiod_wq, &rdata->work); |
|
DeleteMidQEntry(mid); |
|
add_credits(server, &credits, 0); |
|
} |
|
|
|
/* cifs_async_readv - send an async write, and set up mid to handle result */ |
|
int |
|
cifs_async_readv(struct cifs_readdata *rdata) |
|
{ |
|
int rc; |
|
READ_REQ *smb = NULL; |
|
int wct; |
|
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); |
|
struct smb_rqst rqst = { .rq_iov = rdata->iov, |
|
.rq_nvec = 2 }; |
|
|
|
cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
|
__func__, rdata->offset, rdata->bytes); |
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) |
|
wct = 12; |
|
else { |
|
wct = 10; /* old style read */ |
|
if ((rdata->offset >> 32) > 0) { |
|
/* can not handle this big offset for old */ |
|
return -EIO; |
|
} |
|
} |
|
|
|
rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); |
|
if (rc) |
|
return rc; |
|
|
|
smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); |
|
smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); |
|
|
|
smb->AndXCommand = 0xFF; /* none */ |
|
smb->Fid = rdata->cfile->fid.netfid; |
|
smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
|
if (wct == 12) |
|
smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); |
|
smb->Remaining = 0; |
|
smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); |
|
smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); |
|
if (wct == 12) |
|
smb->ByteCount = 0; |
|
else { |
|
/* old style read */ |
|
struct smb_com_readx_req *smbr = |
|
(struct smb_com_readx_req *)smb; |
|
smbr->ByteCount = 0; |
|
} |
|
|
|
/* 4 for RFC1001 length + 1 for BCC */ |
|
rdata->iov[0].iov_base = smb; |
|
rdata->iov[0].iov_len = 4; |
|
rdata->iov[1].iov_base = (char *)smb + 4; |
|
rdata->iov[1].iov_len = get_rfc1002_length(smb); |
|
|
|
kref_get(&rdata->refcount); |
|
rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
|
cifs_readv_callback, NULL, rdata, 0, NULL); |
|
|
|
if (rc == 0) |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
|
else |
|
kref_put(&rdata->refcount, cifs_readdata_release); |
|
|
|
cifs_small_buf_release(smb); |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
|
unsigned int *nbytes, char **buf, int *pbuf_type) |
|
{ |
|
int rc = -EACCES; |
|
READ_REQ *pSMB = NULL; |
|
READ_RSP *pSMBr = NULL; |
|
char *pReadData = NULL; |
|
int wct; |
|
int resp_buf_type = 0; |
|
struct kvec iov[1]; |
|
struct kvec rsp_iov; |
|
__u32 pid = io_parms->pid; |
|
__u16 netfid = io_parms->netfid; |
|
__u64 offset = io_parms->offset; |
|
struct cifs_tcon *tcon = io_parms->tcon; |
|
unsigned int count = io_parms->length; |
|
|
|
cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) |
|
wct = 12; |
|
else { |
|
wct = 10; /* old style read */ |
|
if ((offset >> 32) > 0) { |
|
/* can not handle this big offset for old */ |
|
return -EIO; |
|
} |
|
} |
|
|
|
*nbytes = 0; |
|
rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); |
|
|
|
/* tcon and ses pointer are checked in smb_init */ |
|
if (tcon->ses->server == NULL) |
|
return -ECONNABORTED; |
|
|
|
pSMB->AndXCommand = 0xFF; /* none */ |
|
pSMB->Fid = netfid; |
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
|
if (wct == 12) |
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
|
|
|
pSMB->Remaining = 0; |
|
pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); |
|
pSMB->MaxCountHigh = cpu_to_le32(count >> 16); |
|
if (wct == 12) |
|
pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
|
else { |
|
/* old style read */ |
|
struct smb_com_readx_req *pSMBW = |
|
(struct smb_com_readx_req *)pSMB; |
|
pSMBW->ByteCount = 0; |
|
} |
|
|
|
iov[0].iov_base = (char *)pSMB; |
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
|
rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
|
CIFS_LOG_ERROR, &rsp_iov); |
|
cifs_small_buf_release(pSMB); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
|
pSMBr = (READ_RSP *)rsp_iov.iov_base; |
|
if (rc) { |
|
cifs_dbg(VFS, "Send error in read = %d\n", rc); |
|
} else { |
|
int data_length = le16_to_cpu(pSMBr->DataLengthHigh); |
|
data_length = data_length << 16; |
|
data_length += le16_to_cpu(pSMBr->DataLength); |
|
*nbytes = data_length; |
|
|
|
/*check that DataLength would not go beyond end of SMB */ |
|
if ((data_length > CIFSMaxBufSize) |
|
|| (data_length > count)) { |
|
cifs_dbg(FYI, "bad length %d for count %d\n", |
|
data_length, count); |
|
rc = -EIO; |
|
*nbytes = 0; |
|
} else { |
|
pReadData = (char *) (&pSMBr->hdr.Protocol) + |
|
le16_to_cpu(pSMBr->DataOffset); |
|
/* if (rc = copy_to_user(buf, pReadData, data_length)) { |
|
cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
|
rc = -EFAULT; |
|
}*/ /* can not use copy_to_user when using page cache*/ |
|
if (*buf) |
|
memcpy(*buf, pReadData, data_length); |
|
} |
|
} |
|
|
|
if (*buf) { |
|
free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
|
} else if (resp_buf_type != CIFS_NO_BUFFER) { |
|
/* return buffer to caller to free */ |
|
*buf = rsp_iov.iov_base; |
|
if (resp_buf_type == CIFS_SMALL_BUFFER) |
|
*pbuf_type = CIFS_SMALL_BUFFER; |
|
else if (resp_buf_type == CIFS_LARGE_BUFFER) |
|
*pbuf_type = CIFS_LARGE_BUFFER; |
|
} /* else no valid buffer on return - leave as null */ |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
return rc; |
|
} |
|
|
|
|
|
int |
|
CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
|
unsigned int *nbytes, const char *buf) |
|
{ |
|
int rc = -EACCES; |
|
WRITE_REQ *pSMB = NULL; |
|
WRITE_RSP *pSMBr = NULL; |
|
int bytes_returned, wct; |
|
__u32 bytes_sent; |
|
__u16 byte_count; |
|
__u32 pid = io_parms->pid; |
|
__u16 netfid = io_parms->netfid; |
|
__u64 offset = io_parms->offset; |
|
struct cifs_tcon *tcon = io_parms->tcon; |
|
unsigned int count = io_parms->length; |
|
|
|
*nbytes = 0; |
|
|
|
/* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
|
if (tcon->ses == NULL) |
|
return -ECONNABORTED; |
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) |
|
wct = 14; |
|
else { |
|
wct = 12; |
|
if ((offset >> 32) > 0) { |
|
/* can not handle big offset for old srv */ |
|
return -EIO; |
|
} |
|
} |
|
|
|
rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); |
|
|
|
/* tcon and ses pointer are checked in smb_init */ |
|
if (tcon->ses->server == NULL) |
|
return -ECONNABORTED; |
|
|
|
pSMB->AndXCommand = 0xFF; /* none */ |
|
pSMB->Fid = netfid; |
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
|
if (wct == 14) |
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
|
|
|
pSMB->Reserved = 0xFFFFFFFF; |
|
pSMB->WriteMode = 0; |
|
pSMB->Remaining = 0; |
|
|
|
/* Can increase buffer size if buffer is big enough in some cases ie we |
|
can send more if LARGE_WRITE_X capability returned by the server and if |
|
our buffer is big enough or if we convert to iovecs on socket writes |
|
and eliminate the copy to the CIFS buffer */ |
|
if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
|
bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
|
} else { |
|
bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) |
|
& ~0xFF; |
|
} |
|
|
|
if (bytes_sent > count) |
|
bytes_sent = count; |
|
pSMB->DataOffset = |
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
|
if (buf) |
|
memcpy(pSMB->Data, buf, bytes_sent); |
|
else if (count != 0) { |
|
/* No buffer */ |
|
cifs_buf_release(pSMB); |
|
return -EINVAL; |
|
} /* else setting file size with write of zero bytes */ |
|
if (wct == 14) |
|
byte_count = bytes_sent + 1; /* pad */ |
|
else /* wct == 12 */ |
|
byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
|
|
|
pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
|
pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
|
|
if (wct == 14) |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
else { /* old style write has byte count 4 bytes earlier |
|
so 4 bytes pad */ |
|
struct smb_com_writex_req *pSMBW = |
|
(struct smb_com_writex_req *)pSMB; |
|
pSMBW->ByteCount = cpu_to_le16(byte_count); |
|
} |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in write = %d\n", rc); |
|
} else { |
|
*nbytes = le16_to_cpu(pSMBr->CountHigh); |
|
*nbytes = (*nbytes) << 16; |
|
*nbytes += le16_to_cpu(pSMBr->Count); |
|
|
|
/* |
|
* Mask off high 16 bits when bytes written as returned by the |
|
* server is greater than bytes requested by the client. Some |
|
* OS/2 servers are known to set incorrect CountHigh values. |
|
*/ |
|
if (*nbytes > count) |
|
*nbytes &= 0xFFFF; |
|
} |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
|
|
return rc; |
|
} |
|
|
|
void |
|
cifs_writedata_release(struct kref *refcount) |
|
{ |
|
struct cifs_writedata *wdata = container_of(refcount, |
|
struct cifs_writedata, refcount); |
|
#ifdef CONFIG_CIFS_SMB_DIRECT |
|
if (wdata->mr) { |
|
smbd_deregister_mr(wdata->mr); |
|
wdata->mr = NULL; |
|
} |
|
#endif |
|
|
|
if (wdata->cfile) |
|
cifsFileInfo_put(wdata->cfile); |
|
|
|
kvfree(wdata->pages); |
|
kfree(wdata); |
|
} |
|
|
|
/* |
|
* Write failed with a retryable error. Resend the write request. It's also |
|
* possible that the page was redirtied so re-clean the page. |
|
*/ |
|
static void |
|
cifs_writev_requeue(struct cifs_writedata *wdata) |
|
{ |
|
int i, rc = 0; |
|
struct inode *inode = d_inode(wdata->cfile->dentry); |
|
struct TCP_Server_Info *server; |
|
unsigned int rest_len; |
|
|
|
server = tlink_tcon(wdata->cfile->tlink)->ses->server; |
|
i = 0; |
|
rest_len = wdata->bytes; |
|
do { |
|
struct cifs_writedata *wdata2; |
|
unsigned int j, nr_pages, wsize, tailsz, cur_len; |
|
|
|
wsize = server->ops->wp_retry_size(inode); |
|
if (wsize < rest_len) { |
|
nr_pages = wsize / PAGE_SIZE; |
|
if (!nr_pages) { |
|
rc = -ENOTSUPP; |
|
break; |
|
} |
|
cur_len = nr_pages * PAGE_SIZE; |
|
tailsz = PAGE_SIZE; |
|
} else { |
|
nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
|
cur_len = rest_len; |
|
tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
|
} |
|
|
|
wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); |
|
if (!wdata2) { |
|
rc = -ENOMEM; |
|
break; |
|
} |
|
|
|
for (j = 0; j < nr_pages; j++) { |
|
wdata2->pages[j] = wdata->pages[i + j]; |
|
lock_page(wdata2->pages[j]); |
|
clear_page_dirty_for_io(wdata2->pages[j]); |
|
} |
|
|
|
wdata2->sync_mode = wdata->sync_mode; |
|
wdata2->nr_pages = nr_pages; |
|
wdata2->offset = page_offset(wdata2->pages[0]); |
|
wdata2->pagesz = PAGE_SIZE; |
|
wdata2->tailsz = tailsz; |
|
wdata2->bytes = cur_len; |
|
|
|
rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY, |
|
&wdata2->cfile); |
|
if (!wdata2->cfile) { |
|
cifs_dbg(VFS, "No writable handle to retry writepages rc=%d\n", |
|
rc); |
|
if (!is_retryable_error(rc)) |
|
rc = -EBADF; |
|
} else { |
|
wdata2->pid = wdata2->cfile->pid; |
|
rc = server->ops->async_writev(wdata2, |
|
cifs_writedata_release); |
|
} |
|
|
|
for (j = 0; j < nr_pages; j++) { |
|
unlock_page(wdata2->pages[j]); |
|
if (rc != 0 && !is_retryable_error(rc)) { |
|
SetPageError(wdata2->pages[j]); |
|
end_page_writeback(wdata2->pages[j]); |
|
put_page(wdata2->pages[j]); |
|
} |
|
} |
|
|
|
kref_put(&wdata2->refcount, cifs_writedata_release); |
|
if (rc) { |
|
if (is_retryable_error(rc)) |
|
continue; |
|
i += nr_pages; |
|
break; |
|
} |
|
|
|
rest_len -= cur_len; |
|
i += nr_pages; |
|
} while (i < wdata->nr_pages); |
|
|
|
/* cleanup remaining pages from the original wdata */ |
|
for (; i < wdata->nr_pages; i++) { |
|
SetPageError(wdata->pages[i]); |
|
end_page_writeback(wdata->pages[i]); |
|
put_page(wdata->pages[i]); |
|
} |
|
|
|
if (rc != 0 && !is_retryable_error(rc)) |
|
mapping_set_error(inode->i_mapping, rc); |
|
kref_put(&wdata->refcount, cifs_writedata_release); |
|
} |
|
|
|
void |
|
cifs_writev_complete(struct work_struct *work) |
|
{ |
|
struct cifs_writedata *wdata = container_of(work, |
|
struct cifs_writedata, work); |
|
struct inode *inode = d_inode(wdata->cfile->dentry); |
|
int i = 0; |
|
|
|
if (wdata->result == 0) { |
|
spin_lock(&inode->i_lock); |
|
cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
|
spin_unlock(&inode->i_lock); |
|
cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), |
|
wdata->bytes); |
|
} else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) |
|
return cifs_writev_requeue(wdata); |
|
|
|
for (i = 0; i < wdata->nr_pages; i++) { |
|
struct page *page = wdata->pages[i]; |
|
if (wdata->result == -EAGAIN) |
|
__set_page_dirty_nobuffers(page); |
|
else if (wdata->result < 0) |
|
SetPageError(page); |
|
end_page_writeback(page); |
|
put_page(page); |
|
} |
|
if (wdata->result != -EAGAIN) |
|
mapping_set_error(inode->i_mapping, wdata->result); |
|
kref_put(&wdata->refcount, cifs_writedata_release); |
|
} |
|
|
|
struct cifs_writedata * |
|
cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
|
{ |
|
struct page **pages = |
|
kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); |
|
if (pages) |
|
return cifs_writedata_direct_alloc(pages, complete); |
|
|
|
return NULL; |
|
} |
|
|
|
struct cifs_writedata * |
|
cifs_writedata_direct_alloc(struct page **pages, work_func_t complete) |
|
{ |
|
struct cifs_writedata *wdata; |
|
|
|
wdata = kzalloc(sizeof(*wdata), GFP_NOFS); |
|
if (wdata != NULL) { |
|
wdata->pages = pages; |
|
kref_init(&wdata->refcount); |
|
INIT_LIST_HEAD(&wdata->list); |
|
init_completion(&wdata->done); |
|
INIT_WORK(&wdata->work, complete); |
|
} |
|
return wdata; |
|
} |
|
|
|
/* |
|
* Check the mid_state and signature on received buffer (if any), and queue the |
|
* workqueue completion task. |
|
*/ |
|
static void |
|
cifs_writev_callback(struct mid_q_entry *mid) |
|
{ |
|
struct cifs_writedata *wdata = mid->callback_data; |
|
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
|
unsigned int written; |
|
WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; |
|
struct cifs_credits credits = { .value = 1, .instance = 0 }; |
|
|
|
switch (mid->mid_state) { |
|
case MID_RESPONSE_RECEIVED: |
|
wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); |
|
if (wdata->result != 0) |
|
break; |
|
|
|
written = le16_to_cpu(smb->CountHigh); |
|
written <<= 16; |
|
written += le16_to_cpu(smb->Count); |
|
/* |
|
* Mask off high 16 bits when bytes written as returned |
|
* by the server is greater than bytes requested by the |
|
* client. OS/2 servers are known to set incorrect |
|
* CountHigh values. |
|
*/ |
|
if (written > wdata->bytes) |
|
written &= 0xFFFF; |
|
|
|
if (written < wdata->bytes) |
|
wdata->result = -ENOSPC; |
|
else |
|
wdata->bytes = written; |
|
break; |
|
case MID_REQUEST_SUBMITTED: |
|
case MID_RETRY_NEEDED: |
|
wdata->result = -EAGAIN; |
|
break; |
|
default: |
|
wdata->result = -EIO; |
|
break; |
|
} |
|
|
|
queue_work(cifsiod_wq, &wdata->work); |
|
DeleteMidQEntry(mid); |
|
add_credits(tcon->ses->server, &credits, 0); |
|
} |
|
|
|
/* cifs_async_writev - send an async write, and set up mid to handle result */ |
|
int |
|
cifs_async_writev(struct cifs_writedata *wdata, |
|
void (*release)(struct kref *kref)) |
|
{ |
|
int rc = -EACCES; |
|
WRITE_REQ *smb = NULL; |
|
int wct; |
|
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
|
struct kvec iov[2]; |
|
struct smb_rqst rqst = { }; |
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
|
wct = 14; |
|
} else { |
|
wct = 12; |
|
if (wdata->offset >> 32 > 0) { |
|
/* can not handle big offset for old srv */ |
|
return -EIO; |
|
} |
|
} |
|
|
|
rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); |
|
if (rc) |
|
goto async_writev_out; |
|
|
|
smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
|
smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); |
|
|
|
smb->AndXCommand = 0xFF; /* none */ |
|
smb->Fid = wdata->cfile->fid.netfid; |
|
smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
|
if (wct == 14) |
|
smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); |
|
smb->Reserved = 0xFFFFFFFF; |
|
smb->WriteMode = 0; |
|
smb->Remaining = 0; |
|
|
|
smb->DataOffset = |
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
|
|
|
/* 4 for RFC1001 length + 1 for BCC */ |
|
iov[0].iov_len = 4; |
|
iov[0].iov_base = smb; |
|
iov[1].iov_len = get_rfc1002_length(smb) + 1; |
|
iov[1].iov_base = (char *)smb + 4; |
|
|
|
rqst.rq_iov = iov; |
|
rqst.rq_nvec = 2; |
|
rqst.rq_pages = wdata->pages; |
|
rqst.rq_offset = wdata->page_offset; |
|
rqst.rq_npages = wdata->nr_pages; |
|
rqst.rq_pagesz = wdata->pagesz; |
|
rqst.rq_tailsz = wdata->tailsz; |
|
|
|
cifs_dbg(FYI, "async write at %llu %u bytes\n", |
|
wdata->offset, wdata->bytes); |
|
|
|
smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); |
|
smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); |
|
|
|
if (wct == 14) { |
|
inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); |
|
put_bcc(wdata->bytes + 1, &smb->hdr); |
|
} else { |
|
/* wct == 12 */ |
|
struct smb_com_writex_req *smbw = |
|
(struct smb_com_writex_req *)smb; |
|
inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); |
|
put_bcc(wdata->bytes + 5, &smbw->hdr); |
|
iov[1].iov_len += 4; /* pad bigger by four bytes */ |
|
} |
|
|
|
kref_get(&wdata->refcount); |
|
rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
|
cifs_writev_callback, NULL, wdata, 0, NULL); |
|
|
|
if (rc == 0) |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
|
else |
|
kref_put(&wdata->refcount, release); |
|
|
|
async_writev_out: |
|
cifs_small_buf_release(smb); |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
|
unsigned int *nbytes, struct kvec *iov, int n_vec) |
|
{ |
|
int rc; |
|
WRITE_REQ *pSMB = NULL; |
|
int wct; |
|
int smb_hdr_len; |
|
int resp_buf_type = 0; |
|
__u32 pid = io_parms->pid; |
|
__u16 netfid = io_parms->netfid; |
|
__u64 offset = io_parms->offset; |
|
struct cifs_tcon *tcon = io_parms->tcon; |
|
unsigned int count = io_parms->length; |
|
struct kvec rsp_iov; |
|
|
|
*nbytes = 0; |
|
|
|
cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
|
wct = 14; |
|
} else { |
|
wct = 12; |
|
if ((offset >> 32) > 0) { |
|
/* can not handle big offset for old srv */ |
|
return -EIO; |
|
} |
|
} |
|
rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); |
|
|
|
/* tcon and ses pointer are checked in smb_init */ |
|
if (tcon->ses->server == NULL) |
|
return -ECONNABORTED; |
|
|
|
pSMB->AndXCommand = 0xFF; /* none */ |
|
pSMB->Fid = netfid; |
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
|
if (wct == 14) |
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
|
pSMB->Reserved = 0xFFFFFFFF; |
|
pSMB->WriteMode = 0; |
|
pSMB->Remaining = 0; |
|
|
|
pSMB->DataOffset = |
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
|
|
|
pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
|
pSMB->DataLengthHigh = cpu_to_le16(count >> 16); |
|
/* header + 1 byte pad */ |
|
smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; |
|
if (wct == 14) |
|
inc_rfc1001_len(pSMB, count + 1); |
|
else /* wct == 12 */ |
|
inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
|
if (wct == 14) |
|
pSMB->ByteCount = cpu_to_le16(count + 1); |
|
else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { |
|
struct smb_com_writex_req *pSMBW = |
|
(struct smb_com_writex_req *)pSMB; |
|
pSMBW->ByteCount = cpu_to_le16(count + 5); |
|
} |
|
iov[0].iov_base = pSMB; |
|
if (wct == 14) |
|
iov[0].iov_len = smb_hdr_len + 4; |
|
else /* wct == 12 pad bigger by four bytes */ |
|
iov[0].iov_len = smb_hdr_len + 8; |
|
|
|
rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
|
&rsp_iov); |
|
cifs_small_buf_release(pSMB); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
|
} else if (resp_buf_type == 0) { |
|
/* presumably this can not happen, but best to be safe */ |
|
rc = -EIO; |
|
} else { |
|
WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
|
*nbytes = le16_to_cpu(pSMBr->CountHigh); |
|
*nbytes = (*nbytes) << 16; |
|
*nbytes += le16_to_cpu(pSMBr->Count); |
|
|
|
/* |
|
* Mask off high 16 bits when bytes written as returned by the |
|
* server is greater than bytes requested by the client. OS/2 |
|
* servers are known to set incorrect CountHigh values. |
|
*/ |
|
if (*nbytes > count) |
|
*nbytes &= 0xFFFF; |
|
} |
|
|
|
free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
|
|
return rc; |
|
} |
|
|
|
int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
|
const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, |
|
const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
|
{ |
|
int rc = 0; |
|
LOCK_REQ *pSMB = NULL; |
|
struct kvec iov[2]; |
|
struct kvec rsp_iov; |
|
int resp_buf_type; |
|
__u16 count; |
|
|
|
cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
|
num_lock, num_unlock); |
|
|
|
rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->Timeout = 0; |
|
pSMB->NumberOfLocks = cpu_to_le16(num_lock); |
|
pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); |
|
pSMB->LockType = lock_type; |
|
pSMB->AndXCommand = 0xFF; /* none */ |
|
pSMB->Fid = netfid; /* netfid stays le */ |
|
|
|
count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); |
|
inc_rfc1001_len(pSMB, count); |
|
pSMB->ByteCount = cpu_to_le16(count); |
|
|
|
iov[0].iov_base = (char *)pSMB; |
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - |
|
(num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); |
|
iov[1].iov_base = (char *)buf; |
|
iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); |
|
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
|
rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, |
|
CIFS_NO_RSP_BUF, &rsp_iov); |
|
cifs_small_buf_release(pSMB); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
|
const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
|
const __u64 offset, const __u32 numUnlock, |
|
const __u32 numLock, const __u8 lockType, |
|
const bool waitFlag, const __u8 oplock_level) |
|
{ |
|
int rc = 0; |
|
LOCK_REQ *pSMB = NULL; |
|
/* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
|
int bytes_returned; |
|
int flags = 0; |
|
__u16 count; |
|
|
|
cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
|
(int)waitFlag, numLock); |
|
rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
|
|
|
if (rc) |
|
return rc; |
|
|
|
if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
|
/* no response expected */ |
|
flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP; |
|
pSMB->Timeout = 0; |
|
} else if (waitFlag) { |
|
flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
|
pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
|
} else { |
|
pSMB->Timeout = 0; |
|
} |
|
|
|
pSMB->NumberOfLocks = cpu_to_le16(numLock); |
|
pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); |
|
pSMB->LockType = lockType; |
|
pSMB->OplockLevel = oplock_level; |
|
pSMB->AndXCommand = 0xFF; /* none */ |
|
pSMB->Fid = smb_file_id; /* netfid stays le */ |
|
|
|
if ((numLock != 0) || (numUnlock != 0)) { |
|
pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
|
/* BB where to store pid high? */ |
|
pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); |
|
pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); |
|
pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); |
|
pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); |
|
count = sizeof(LOCKING_ANDX_RANGE); |
|
} else { |
|
/* oplock break */ |
|
count = 0; |
|
} |
|
inc_rfc1001_len(pSMB, count); |
|
pSMB->ByteCount = cpu_to_le16(count); |
|
|
|
if (waitFlag) |
|
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMB, &bytes_returned); |
|
else |
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
|
cifs_small_buf_release(pSMB); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
|
const __u16 smb_file_id, const __u32 netpid, |
|
const loff_t start_offset, const __u64 len, |
|
struct file_lock *pLockData, const __u16 lock_type, |
|
const bool waitFlag) |
|
{ |
|
struct smb_com_transaction2_sfi_req *pSMB = NULL; |
|
struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
|
struct cifs_posix_lock *parm_data; |
|
int rc = 0; |
|
int timeout = 0; |
|
int bytes_returned = 0; |
|
int resp_buf_type = 0; |
|
__u16 params, param_offset, offset, byte_count, count; |
|
struct kvec iov[1]; |
|
struct kvec rsp_iov; |
|
|
|
cifs_dbg(FYI, "Posix Lock\n"); |
|
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
|
|
|
if (rc) |
|
return rc; |
|
|
|
pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
|
|
|
params = 6; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
|
offset = param_offset + params; |
|
|
|
count = sizeof(struct cifs_posix_lock); |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
if (pLockData) |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
|
else |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
parm_data = (struct cifs_posix_lock *) |
|
(((char *) &pSMB->hdr.Protocol) + offset); |
|
|
|
parm_data->lock_type = cpu_to_le16(lock_type); |
|
if (waitFlag) { |
|
timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
|
parm_data->lock_flags = cpu_to_le16(1); |
|
pSMB->Timeout = cpu_to_le32(-1); |
|
} else |
|
pSMB->Timeout = 0; |
|
|
|
parm_data->pid = cpu_to_le32(netpid); |
|
parm_data->start = cpu_to_le64(start_offset); |
|
parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
|
|
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->Fid = smb_file_id; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
if (waitFlag) { |
|
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned); |
|
} else { |
|
iov[0].iov_base = (char *)pSMB; |
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
|
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
|
&resp_buf_type, timeout, &rsp_iov); |
|
pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; |
|
} |
|
cifs_small_buf_release(pSMB); |
|
|
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
|
} else if (pLockData) { |
|
/* lock structure can be returned on get */ |
|
__u16 data_offset; |
|
__u16 data_count; |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
|
rc = -EIO; /* bad smb */ |
|
goto plk_err_exit; |
|
} |
|
data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
data_count = le16_to_cpu(pSMBr->t2.DataCount); |
|
if (data_count < sizeof(struct cifs_posix_lock)) { |
|
rc = -EIO; |
|
goto plk_err_exit; |
|
} |
|
parm_data = (struct cifs_posix_lock *) |
|
((char *)&pSMBr->hdr.Protocol + data_offset); |
|
if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
|
pLockData->fl_type = F_UNLCK; |
|
else { |
|
if (parm_data->lock_type == |
|
cpu_to_le16(CIFS_RDLCK)) |
|
pLockData->fl_type = F_RDLCK; |
|
else if (parm_data->lock_type == |
|
cpu_to_le16(CIFS_WRLCK)) |
|
pLockData->fl_type = F_WRLCK; |
|
|
|
pLockData->fl_start = le64_to_cpu(parm_data->start); |
|
pLockData->fl_end = pLockData->fl_start + |
|
le64_to_cpu(parm_data->length) - 1; |
|
pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
|
} |
|
} |
|
|
|
plk_err_exit: |
|
free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
|
|
return rc; |
|
} |
|
|
|
|
|
int |
|
CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
|
{ |
|
int rc = 0; |
|
CLOSE_REQ *pSMB = NULL; |
|
cifs_dbg(FYI, "In CIFSSMBClose\n"); |
|
|
|
/* do not retry on dead session on close */ |
|
rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); |
|
if (rc == -EAGAIN) |
|
return 0; |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->FileID = (__u16) smb_file_id; |
|
pSMB->LastWriteTime = 0xFFFFFFFF; |
|
pSMB->ByteCount = 0; |
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
|
if (rc) { |
|
if (rc != -EINTR) { |
|
/* EINTR is expected when user ctl-c to kill app */ |
|
cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
|
} |
|
} |
|
|
|
/* Since session is dead, file will be closed on server already */ |
|
if (rc == -EAGAIN) |
|
rc = 0; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
|
{ |
|
int rc = 0; |
|
FLUSH_REQ *pSMB = NULL; |
|
cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
|
|
|
rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->FileID = (__u16) smb_file_id; |
|
pSMB->ByteCount = 0; |
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
|
if (rc) |
|
cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *from_name, const char *to_name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
int rc = 0; |
|
RENAME_REQ *pSMB = NULL; |
|
RENAME_RSP *pSMBr = NULL; |
|
int bytes_returned; |
|
int name_len, name_len2; |
|
__u16 count; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
cifs_dbg(FYI, "In CIFSSMBRename\n"); |
|
renameRetry: |
|
rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->BufferFormat = 0x04; |
|
pSMB->SearchAttributes = |
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | |
|
ATTR_DIRECTORY); |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
|
from_name, PATH_MAX, |
|
cifs_sb->local_nls, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
pSMB->OldFileName[name_len] = 0x04; /* pad */ |
|
/* protocol requires ASCII signature byte on Unicode string */ |
|
pSMB->OldFileName[name_len + 1] = 0x00; |
|
name_len2 = |
|
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
|
to_name, PATH_MAX, cifs_sb->local_nls, |
|
remap); |
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
|
name_len2 *= 2; /* convert to bytes */ |
|
} else { |
|
name_len = copy_path_name(pSMB->OldFileName, from_name); |
|
name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
|
name_len2++; /* signature byte */ |
|
} |
|
|
|
count = 1 /* 1st signature byte */ + name_len + name_len2; |
|
inc_rfc1001_len(pSMB, count); |
|
pSMB->ByteCount = cpu_to_le16(count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto renameRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
|
int netfid, const char *target_name, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
struct smb_com_transaction2_sfi_req *pSMB = NULL; |
|
struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
|
struct set_file_rename *rename_info; |
|
char *data_offset; |
|
char dummy_string[30]; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
int len_of_str; |
|
__u16 params, param_offset, offset, count, byte_count; |
|
|
|
cifs_dbg(FYI, "Rename to File by handle\n"); |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 6; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
|
offset = param_offset + params; |
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
|
rename_info = (struct set_file_rename *) data_offset; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
|
byte_count = 3 /* pad */ + params; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
/* construct random name ".cifs_tmp<inodenum><mid>" */ |
|
rename_info->overwrite = cpu_to_le32(1); |
|
rename_info->root_fid = 0; |
|
/* unicode only call */ |
|
if (target_name == NULL) { |
|
sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
|
len_of_str = |
|
cifsConvertToUTF16((__le16 *)rename_info->target_name, |
|
dummy_string, 24, nls_codepage, remap); |
|
} else { |
|
len_of_str = |
|
cifsConvertToUTF16((__le16 *)rename_info->target_name, |
|
target_name, PATH_MAX, nls_codepage, |
|
remap); |
|
} |
|
rename_info->target_name_len = cpu_to_le32(2 * len_of_str); |
|
count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
|
byte_count += count; |
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->Fid = netfid; |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
|
rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fromName, const __u16 target_tid, const char *toName, |
|
const int flags, const struct nls_table *nls_codepage, int remap) |
|
{ |
|
int rc = 0; |
|
COPY_REQ *pSMB = NULL; |
|
COPY_RSP *pSMBr = NULL; |
|
int bytes_returned; |
|
int name_len, name_len2; |
|
__u16 count; |
|
|
|
cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
|
copyRetry: |
|
rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->BufferFormat = 0x04; |
|
pSMB->Tid2 = target_tid; |
|
|
|
pSMB->Flags = cpu_to_le16(flags & COPY_TREE); |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
|
fromName, PATH_MAX, nls_codepage, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
pSMB->OldFileName[name_len] = 0x04; /* pad */ |
|
/* protocol requires ASCII signature byte on Unicode string */ |
|
pSMB->OldFileName[name_len + 1] = 0x00; |
|
name_len2 = |
|
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
|
toName, PATH_MAX, nls_codepage, remap); |
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
|
name_len2 *= 2; /* convert to bytes */ |
|
} else { |
|
name_len = copy_path_name(pSMB->OldFileName, fromName); |
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
|
name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName); |
|
name_len2++; /* signature byte */ |
|
} |
|
|
|
count = 1 /* 1st signature byte */ + name_len + name_len2; |
|
inc_rfc1001_len(pSMB, count); |
|
pSMB->ByteCount = cpu_to_le16(count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
|
rc, le16_to_cpu(pSMBr->CopyCount)); |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto copyRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fromName, const char *toName, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
TRANSACTION2_SPI_REQ *pSMB = NULL; |
|
TRANSACTION2_SPI_RSP *pSMBr = NULL; |
|
char *data_offset; |
|
int name_len; |
|
int name_len_target; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, param_offset, offset, byte_count; |
|
|
|
cifs_dbg(FYI, "In Symlink Unix style\n"); |
|
createSymLinkRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
|
/* find define for this maxpathcomponent */ |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
|
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, fromName); |
|
} |
|
params = 6 + name_len; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len_target = |
|
cifsConvertToUTF16((__le16 *) data_offset, toName, |
|
/* find define for this maxpathcomponent */ |
|
PATH_MAX, nls_codepage, remap); |
|
name_len_target++; /* trailing null */ |
|
name_len_target *= 2; |
|
} else { |
|
name_len_target = copy_path_name(data_offset, toName); |
|
} |
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max on data count below from sess */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + name_len_target; |
|
pSMB->DataCount = cpu_to_le16(name_len_target); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
|
rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto createSymLinkRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fromName, const char *toName, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
TRANSACTION2_SPI_REQ *pSMB = NULL; |
|
TRANSACTION2_SPI_RSP *pSMBr = NULL; |
|
char *data_offset; |
|
int name_len; |
|
int name_len_target; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, param_offset, offset, byte_count; |
|
|
|
cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
|
createHardLinkRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
|
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, toName); |
|
} |
|
params = 6 + name_len; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len_target = |
|
cifsConvertToUTF16((__le16 *) data_offset, fromName, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len_target++; /* trailing null */ |
|
name_len_target *= 2; |
|
} else { |
|
name_len_target = copy_path_name(data_offset, fromName); |
|
} |
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max on data count below from sess*/ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + name_len_target; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->DataCount = cpu_to_le16(name_len_target); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
|
rc); |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto createHardLinkRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *from_name, const char *to_name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
int rc = 0; |
|
NT_RENAME_REQ *pSMB = NULL; |
|
RENAME_RSP *pSMBr = NULL; |
|
int bytes_returned; |
|
int name_len, name_len2; |
|
__u16 count; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
|
winCreateHardLinkRetry: |
|
|
|
rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->SearchAttributes = |
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | |
|
ATTR_DIRECTORY); |
|
pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); |
|
pSMB->ClusterCount = 0; |
|
|
|
pSMB->BufferFormat = 0x04; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
|
PATH_MAX, cifs_sb->local_nls, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
|
|
/* protocol specifies ASCII buffer format (0x04) for unicode */ |
|
pSMB->OldFileName[name_len] = 0x04; |
|
pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ |
|
name_len2 = |
|
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
|
to_name, PATH_MAX, cifs_sb->local_nls, |
|
remap); |
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
|
name_len2 *= 2; /* convert to bytes */ |
|
} else { |
|
name_len = copy_path_name(pSMB->OldFileName, from_name); |
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
|
name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
|
name_len2++; /* signature byte */ |
|
} |
|
|
|
count = 1 /* string type byte */ + name_len + name_len2; |
|
inc_rfc1001_len(pSMB, count); |
|
pSMB->ByteCount = cpu_to_le16(count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto winCreateHardLinkRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
|
const unsigned char *searchName, char **symlinkinfo, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
/* SMB_QUERY_FILE_UNIX_LINK */ |
|
TRANSACTION2_QPI_REQ *pSMB = NULL; |
|
TRANSACTION2_QPI_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
__u16 params, byte_count; |
|
char *data_start; |
|
|
|
cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
|
|
|
querySymLinkRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, |
|
searchName, PATH_MAX, nls_codepage, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, searchName); |
|
} |
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
|
} else { |
|
/* decode response */ |
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
/* BB also check enough total bytes returned */ |
|
if (rc || get_bcc(&pSMBr->hdr) < 2) |
|
rc = -EIO; |
|
else { |
|
bool is_unicode; |
|
u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
|
|
|
data_start = ((char *) &pSMBr->hdr.Protocol) + |
|
le16_to_cpu(pSMBr->t2.DataOffset); |
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
|
is_unicode = true; |
|
else |
|
is_unicode = false; |
|
|
|
/* BB FIXME investigate remapping reserved chars here */ |
|
*symlinkinfo = cifs_strndup_from_utf16(data_start, |
|
count, is_unicode, nls_codepage); |
|
if (!*symlinkinfo) |
|
rc = -ENOMEM; |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto querySymLinkRetry; |
|
return rc; |
|
} |
|
|
|
/* |
|
* Recent Windows versions now create symlinks more frequently |
|
* and they use the "reparse point" mechanism below. We can of course |
|
* do symlinks nicely to Samba and other servers which support the |
|
* CIFS Unix Extensions and we can also do SFU symlinks and "client only" |
|
* "MF" symlinks optionally, but for recent Windows we really need to |
|
* reenable the code below and fix the cifs_symlink callers to handle this. |
|
* In the interim this code has been moved to its own config option so |
|
* it is not compiled in by default until callers fixed up and more tested. |
|
*/ |
|
int |
|
CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
|
__u16 fid, char **symlinkinfo, |
|
const struct nls_table *nls_codepage) |
|
{ |
|
int rc = 0; |
|
int bytes_returned; |
|
struct smb_com_transaction_ioctl_req *pSMB; |
|
struct smb_com_transaction_ioctl_rsp *pSMBr; |
|
bool is_unicode; |
|
unsigned int sub_len; |
|
char *sub_start; |
|
struct reparse_symlink_data *reparse_buf; |
|
struct reparse_posix_data *posix_buf; |
|
__u32 data_offset, data_count; |
|
char *end_of_smb; |
|
|
|
cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); |
|
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->TotalParameterCount = 0 ; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le32(2); |
|
/* BB find exact data count max from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
|
pSMB->MaxSetupCount = 4; |
|
pSMB->Reserved = 0; |
|
pSMB->ParameterOffset = 0; |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 4; |
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); |
|
pSMB->IsFsctl = 1; /* FSCTL */ |
|
pSMB->IsRootFlag = 0; |
|
pSMB->Fid = fid; /* file handle always le */ |
|
pSMB->ByteCount = 0; |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
|
goto qreparse_out; |
|
} |
|
|
|
data_offset = le32_to_cpu(pSMBr->DataOffset); |
|
data_count = le32_to_cpu(pSMBr->DataCount); |
|
if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { |
|
/* BB also check enough total bytes returned */ |
|
rc = -EIO; /* bad smb */ |
|
goto qreparse_out; |
|
} |
|
if (!data_count || (data_count > 2048)) { |
|
rc = -EIO; |
|
cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); |
|
goto qreparse_out; |
|
} |
|
end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
|
reparse_buf = (struct reparse_symlink_data *) |
|
((char *)&pSMBr->hdr.Protocol + data_offset); |
|
if ((char *)reparse_buf >= end_of_smb) { |
|
rc = -EIO; |
|
goto qreparse_out; |
|
} |
|
if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
|
cifs_dbg(FYI, "NFS style reparse tag\n"); |
|
posix_buf = (struct reparse_posix_data *)reparse_buf; |
|
|
|
if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { |
|
cifs_dbg(FYI, "unsupported file type 0x%llx\n", |
|
le64_to_cpu(posix_buf->InodeType)); |
|
rc = -EOPNOTSUPP; |
|
goto qreparse_out; |
|
} |
|
is_unicode = true; |
|
sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); |
|
if (posix_buf->PathBuffer + sub_len > end_of_smb) { |
|
cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
|
rc = -EIO; |
|
goto qreparse_out; |
|
} |
|
*symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, |
|
sub_len, is_unicode, nls_codepage); |
|
goto qreparse_out; |
|
} else if (reparse_buf->ReparseTag != |
|
cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { |
|
rc = -EOPNOTSUPP; |
|
goto qreparse_out; |
|
} |
|
|
|
/* Reparse tag is NTFS symlink */ |
|
sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + |
|
reparse_buf->PathBuffer; |
|
sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); |
|
if (sub_start + sub_len > end_of_smb) { |
|
cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
|
rc = -EIO; |
|
goto qreparse_out; |
|
} |
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
|
is_unicode = true; |
|
else |
|
is_unicode = false; |
|
|
|
/* BB FIXME investigate remapping reserved chars here */ |
|
*symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, |
|
nls_codepage); |
|
if (!*symlinkinfo) |
|
rc = -ENOMEM; |
|
qreparse_out: |
|
cifs_buf_release(pSMB); |
|
|
|
/* |
|
* Note: On -EAGAIN error only caller can retry on handle based calls |
|
* since file handle passed in no longer valid. |
|
*/ |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, |
|
__u16 fid) |
|
{ |
|
int rc = 0; |
|
int bytes_returned; |
|
struct smb_com_transaction_compr_ioctl_req *pSMB; |
|
struct smb_com_transaction_ioctl_rsp *pSMBr; |
|
|
|
cifs_dbg(FYI, "Set compression for %u\n", fid); |
|
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); |
|
|
|
pSMB->TotalParameterCount = 0; |
|
pSMB->TotalDataCount = cpu_to_le32(2); |
|
pSMB->MaxParameterCount = 0; |
|
pSMB->MaxDataCount = 0; |
|
pSMB->MaxSetupCount = 4; |
|
pSMB->Reserved = 0; |
|
pSMB->ParameterOffset = 0; |
|
pSMB->DataCount = cpu_to_le32(2); |
|
pSMB->DataOffset = |
|
cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, |
|
compression_state) - 4); /* 84 */ |
|
pSMB->SetupCount = 4; |
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
|
pSMB->ParameterCount = 0; |
|
pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
|
pSMB->IsFsctl = 1; /* FSCTL */ |
|
pSMB->IsRootFlag = 0; |
|
pSMB->Fid = fid; /* file handle always le */ |
|
/* 3 byte pad, followed by 2 byte compress state */ |
|
pSMB->ByteCount = cpu_to_le16(5); |
|
inc_rfc1001_len(pSMB, 5); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
/* |
|
* Note: On -EAGAIN error only caller can retry on handle based calls |
|
* since file handle passed in no longer valid. |
|
*/ |
|
return rc; |
|
} |
|
|
|
|
|
#ifdef CONFIG_CIFS_POSIX |
|
|
|
/*Convert an Access Control Entry from wire format to local POSIX xattr format*/ |
|
static void cifs_convert_ace(struct posix_acl_xattr_entry *ace, |
|
struct cifs_posix_ace *cifs_ace) |
|
{ |
|
/* u8 cifs fields do not need le conversion */ |
|
ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); |
|
ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); |
|
ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); |
|
/* |
|
cifs_dbg(FYI, "perm %d tag %d id %d\n", |
|
ace->e_perm, ace->e_tag, ace->e_id); |
|
*/ |
|
|
|
return; |
|
} |
|
|
|
/* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ |
|
static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, |
|
const int acl_type, const int size_of_data_area) |
|
{ |
|
int size = 0; |
|
int i; |
|
__u16 count; |
|
struct cifs_posix_ace *pACE; |
|
struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; |
|
struct posix_acl_xattr_header *local_acl = (void *)trgt; |
|
|
|
if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) |
|
return -EOPNOTSUPP; |
|
|
|
if (acl_type == ACL_TYPE_ACCESS) { |
|
count = le16_to_cpu(cifs_acl->access_entry_count); |
|
pACE = &cifs_acl->ace_array[0]; |
|
size = sizeof(struct cifs_posix_acl); |
|
size += sizeof(struct cifs_posix_ace) * count; |
|
/* check if we would go beyond end of SMB */ |
|
if (size_of_data_area < size) { |
|
cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", |
|
size_of_data_area, size); |
|
return -EINVAL; |
|
} |
|
} else if (acl_type == ACL_TYPE_DEFAULT) { |
|
count = le16_to_cpu(cifs_acl->access_entry_count); |
|
size = sizeof(struct cifs_posix_acl); |
|
size += sizeof(struct cifs_posix_ace) * count; |
|
/* skip past access ACEs to get to default ACEs */ |
|
pACE = &cifs_acl->ace_array[count]; |
|
count = le16_to_cpu(cifs_acl->default_entry_count); |
|
size += sizeof(struct cifs_posix_ace) * count; |
|
/* check if we would go beyond end of SMB */ |
|
if (size_of_data_area < size) |
|
return -EINVAL; |
|
} else { |
|
/* illegal type */ |
|
return -EINVAL; |
|
} |
|
|
|
size = posix_acl_xattr_size(count); |
|
if ((buflen == 0) || (local_acl == NULL)) { |
|
/* used to query ACL EA size */ |
|
} else if (size > buflen) { |
|
return -ERANGE; |
|
} else /* buffer big enough */ { |
|
struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
|
|
|
local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
|
for (i = 0; i < count ; i++) { |
|
cifs_convert_ace(&ace[i], pACE); |
|
pACE++; |
|
} |
|
} |
|
return size; |
|
} |
|
|
|
static void convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, |
|
const struct posix_acl_xattr_entry *local_ace) |
|
{ |
|
cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); |
|
cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); |
|
/* BB is there a better way to handle the large uid? */ |
|
if (local_ace->e_id == cpu_to_le32(-1)) { |
|
/* Probably no need to le convert -1 on any arch but can not hurt */ |
|
cifs_ace->cifs_uid = cpu_to_le64(-1); |
|
} else |
|
cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
|
/* |
|
cifs_dbg(FYI, "perm %d tag %d id %d\n", |
|
ace->e_perm, ace->e_tag, ace->e_id); |
|
*/ |
|
} |
|
|
|
/* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ |
|
static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, |
|
const int buflen, const int acl_type) |
|
{ |
|
__u16 rc = 0; |
|
struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; |
|
struct posix_acl_xattr_header *local_acl = (void *)pACL; |
|
struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); |
|
int count; |
|
int i; |
|
|
|
if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
|
return 0; |
|
|
|
count = posix_acl_xattr_count((size_t)buflen); |
|
cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n", |
|
count, buflen, le32_to_cpu(local_acl->a_version)); |
|
if (le32_to_cpu(local_acl->a_version) != 2) { |
|
cifs_dbg(FYI, "unknown POSIX ACL version %d\n", |
|
le32_to_cpu(local_acl->a_version)); |
|
return 0; |
|
} |
|
cifs_acl->version = cpu_to_le16(1); |
|
if (acl_type == ACL_TYPE_ACCESS) { |
|
cifs_acl->access_entry_count = cpu_to_le16(count); |
|
cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
|
} else if (acl_type == ACL_TYPE_DEFAULT) { |
|
cifs_acl->default_entry_count = cpu_to_le16(count); |
|
cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
|
} else { |
|
cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); |
|
return 0; |
|
} |
|
for (i = 0; i < count; i++) |
|
convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); |
|
if (rc == 0) { |
|
rc = (__u16)(count * sizeof(struct cifs_posix_ace)); |
|
rc += sizeof(struct cifs_posix_acl); |
|
/* BB add check to make sure ACL does not overflow SMB */ |
|
} |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
|
const unsigned char *searchName, |
|
char *acl_inf, const int buflen, const int acl_type, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
/* SMB_QUERY_POSIX_ACL */ |
|
TRANSACTION2_QPI_REQ *pSMB = NULL; |
|
TRANSACTION2_QPI_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); |
|
|
|
queryAclRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, |
|
searchName, PATH_MAX, nls_codepage, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
pSMB->FileName[name_len] = 0; |
|
pSMB->FileName[name_len+1] = 0; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, searchName); |
|
} |
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max data count below from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(4000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16( |
|
offsetof(struct smb_com_transaction2_qpi_req, |
|
InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); |
|
} else { |
|
/* decode response */ |
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
/* BB also check enough total bytes returned */ |
|
if (rc || get_bcc(&pSMBr->hdr) < 2) |
|
rc = -EIO; /* bad smb */ |
|
else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
|
rc = cifs_copy_posix_acl(acl_inf, |
|
(char *)&pSMBr->hdr.Protocol+data_offset, |
|
buflen, acl_type, count); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto queryAclRetry; |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
|
const unsigned char *fileName, |
|
const char *local_acl, const int buflen, |
|
const int acl_type, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
struct smb_com_transaction2_spi_req *pSMB = NULL; |
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL; |
|
char *parm_data; |
|
int name_len; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, byte_count, data_count, param_offset, offset; |
|
|
|
cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); |
|
setAclRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, fileName); |
|
} |
|
params = 6 + name_len; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find max SMB size from sess */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
parm_data = ((char *) &pSMB->hdr.Protocol) + offset; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
|
|
/* convert to on the wire format for POSIX ACL */ |
|
data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
|
|
|
if (data_count == 0) { |
|
rc = -EOPNOTSUPP; |
|
goto setACLerrorExit; |
|
} |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); |
|
byte_count = 3 /* pad */ + params + data_count; |
|
pSMB->DataCount = cpu_to_le16(data_count); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); |
|
|
|
setACLerrorExit: |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto setAclRetry; |
|
return rc; |
|
} |
|
|
|
/* BB fix tabs in this function FIXME BB */ |
|
int |
|
CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
|
const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
|
{ |
|
int rc = 0; |
|
struct smb_t2_qfi_req *pSMB = NULL; |
|
struct smb_t2_qfi_rsp *pSMBr = NULL; |
|
int bytes_returned; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In GetExtAttr\n"); |
|
if (tcon == NULL) |
|
return -ENODEV; |
|
|
|
GetExtAttrRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2 /* level */ + 2 /* fid */; |
|
pSMB->t2.TotalDataCount = 0; |
|
pSMB->t2.MaxParameterCount = cpu_to_le16(4); |
|
/* BB find exact max data count below from sess structure BB */ |
|
pSMB->t2.MaxDataCount = cpu_to_le16(4000); |
|
pSMB->t2.MaxSetupCount = 0; |
|
pSMB->t2.Reserved = 0; |
|
pSMB->t2.Flags = 0; |
|
pSMB->t2.Timeout = 0; |
|
pSMB->t2.Reserved2 = 0; |
|
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, |
|
Fid) - 4); |
|
pSMB->t2.DataCount = 0; |
|
pSMB->t2.DataOffset = 0; |
|
pSMB->t2.SetupCount = 1; |
|
pSMB->t2.Reserved3 = 0; |
|
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->t2.TotalParameterCount = cpu_to_le16(params); |
|
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); |
|
pSMB->Pad = 0; |
|
pSMB->Fid = netfid; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
|
} else { |
|
/* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
/* BB also check enough total bytes returned */ |
|
if (rc || get_bcc(&pSMBr->hdr) < 2) |
|
/* If rc should we check for EOPNOSUPP and |
|
disable the srvino flag? or in caller? */ |
|
rc = -EIO; /* bad smb */ |
|
else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
|
struct file_chattr_info *pfinfo; |
|
/* BB Do we need a cast or hash here ? */ |
|
if (count != 16) { |
|
cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n"); |
|
rc = -EIO; |
|
goto GetExtAttrOut; |
|
} |
|
pfinfo = (struct file_chattr_info *) |
|
(data_offset + (char *) &pSMBr->hdr.Protocol); |
|
*pExtAttrBits = le64_to_cpu(pfinfo->mode); |
|
*pMask = le64_to_cpu(pfinfo->mask); |
|
} |
|
} |
|
GetExtAttrOut: |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto GetExtAttrRetry; |
|
return rc; |
|
} |
|
|
|
#endif /* CONFIG_POSIX */ |
|
|
|
/* |
|
* Initialize NT TRANSACT SMB into small smb request buffer. This assumes that |
|
* all NT TRANSACTS that we init here have total parm and data under about 400 |
|
* bytes (to fit in small cifs buffer size), which is the case so far, it |
|
* easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of |
|
* returned setup area) and MaxParameterCount (returned parms size) must be set |
|
* by caller |
|
*/ |
|
static int |
|
smb_init_nttransact(const __u16 sub_command, const int setup_count, |
|
const int parm_len, struct cifs_tcon *tcon, |
|
void **ret_buf) |
|
{ |
|
int rc; |
|
__u32 temp_offset; |
|
struct smb_com_ntransact_req *pSMB; |
|
|
|
rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, |
|
(void **)&pSMB); |
|
if (rc) |
|
return rc; |
|
*ret_buf = (void *)pSMB; |
|
pSMB->Reserved = 0; |
|
pSMB->TotalParameterCount = cpu_to_le32(parm_len); |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->DataCount = pSMB->TotalDataCount; |
|
temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + |
|
(setup_count * 2) - 4 /* for rfc1001 length itself */; |
|
pSMB->ParameterOffset = cpu_to_le32(temp_offset); |
|
pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); |
|
pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ |
|
pSMB->SubCommand = cpu_to_le16(sub_command); |
|
return 0; |
|
} |
|
|
|
static int |
|
validate_ntransact(char *buf, char **ppparm, char **ppdata, |
|
__u32 *pparmlen, __u32 *pdatalen) |
|
{ |
|
char *end_of_smb; |
|
__u32 data_count, data_offset, parm_count, parm_offset; |
|
struct smb_com_ntransact_rsp *pSMBr; |
|
u16 bcc; |
|
|
|
*pdatalen = 0; |
|
*pparmlen = 0; |
|
|
|
if (buf == NULL) |
|
return -EINVAL; |
|
|
|
pSMBr = (struct smb_com_ntransact_rsp *)buf; |
|
|
|
bcc = get_bcc(&pSMBr->hdr); |
|
end_of_smb = 2 /* sizeof byte count */ + bcc + |
|
(char *)&pSMBr->ByteCount; |
|
|
|
data_offset = le32_to_cpu(pSMBr->DataOffset); |
|
data_count = le32_to_cpu(pSMBr->DataCount); |
|
parm_offset = le32_to_cpu(pSMBr->ParameterOffset); |
|
parm_count = le32_to_cpu(pSMBr->ParameterCount); |
|
|
|
*ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; |
|
*ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; |
|
|
|
/* should we also check that parm and data areas do not overlap? */ |
|
if (*ppparm > end_of_smb) { |
|
cifs_dbg(FYI, "parms start after end of smb\n"); |
|
return -EINVAL; |
|
} else if (parm_count + *ppparm > end_of_smb) { |
|
cifs_dbg(FYI, "parm end after end of smb\n"); |
|
return -EINVAL; |
|
} else if (*ppdata > end_of_smb) { |
|
cifs_dbg(FYI, "data starts after end of smb\n"); |
|
return -EINVAL; |
|
} else if (data_count + *ppdata > end_of_smb) { |
|
cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
|
*ppdata, data_count, (data_count + *ppdata), |
|
end_of_smb, pSMBr); |
|
return -EINVAL; |
|
} else if (parm_count + data_count > bcc) { |
|
cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
|
return -EINVAL; |
|
} |
|
*pdatalen = data_count; |
|
*pparmlen = parm_count; |
|
return 0; |
|
} |
|
|
|
/* Get Security Descriptor (by handle) from remote server for a file or dir */ |
|
int |
|
CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
|
struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
|
{ |
|
int rc = 0; |
|
int buf_type = 0; |
|
QUERY_SEC_DESC_REQ *pSMB; |
|
struct kvec iov[1]; |
|
struct kvec rsp_iov; |
|
|
|
cifs_dbg(FYI, "GetCifsACL\n"); |
|
|
|
*pbuflen = 0; |
|
*acl_inf = NULL; |
|
|
|
rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
|
8 /* parm len */, tcon, (void **) &pSMB); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->MaxParameterCount = cpu_to_le32(4); |
|
/* BB TEST with big acls that might need to be e.g. larger than 16K */ |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Fid = fid; /* file handle always le */ |
|
pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | |
|
CIFS_ACL_DACL); |
|
pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ |
|
inc_rfc1001_len(pSMB, 11); |
|
iov[0].iov_base = (char *)pSMB; |
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
|
|
|
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
|
0, &rsp_iov); |
|
cifs_small_buf_release(pSMB); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
|
} else { /* decode response */ |
|
__le32 *parm; |
|
__u32 parm_len; |
|
__u32 acl_len; |
|
struct smb_com_ntransact_rsp *pSMBr; |
|
char *pdata; |
|
|
|
/* validate_nttransact */ |
|
rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
|
&pdata, &parm_len, pbuflen); |
|
if (rc) |
|
goto qsec_out; |
|
pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
|
|
|
cifs_dbg(FYI, "smb %p parm %p data %p\n", |
|
pSMBr, parm, *acl_inf); |
|
|
|
if (le32_to_cpu(pSMBr->ParameterCount) != 4) { |
|
rc = -EIO; /* bad smb */ |
|
*pbuflen = 0; |
|
goto qsec_out; |
|
} |
|
|
|
/* BB check that data area is minimum length and as big as acl_len */ |
|
|
|
acl_len = le32_to_cpu(*parm); |
|
if (acl_len != *pbuflen) { |
|
cifs_dbg(VFS, "acl length %d does not match %d\n", |
|
acl_len, *pbuflen); |
|
if (*pbuflen > acl_len) |
|
*pbuflen = acl_len; |
|
} |
|
|
|
/* check if buffer is big enough for the acl |
|
header followed by the smallest SID */ |
|
if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || |
|
(*pbuflen >= 64 * 1024)) { |
|
cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
|
rc = -EINVAL; |
|
*pbuflen = 0; |
|
} else { |
|
*acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
|
if (*acl_inf == NULL) { |
|
*pbuflen = 0; |
|
rc = -ENOMEM; |
|
} |
|
} |
|
} |
|
qsec_out: |
|
free_rsp_buf(buf_type, rsp_iov.iov_base); |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
|
struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
|
{ |
|
__u16 byte_count, param_count, data_count, param_offset, data_offset; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
SET_SEC_DESC_REQ *pSMB = NULL; |
|
void *pSMBr; |
|
|
|
setCifsAclRetry: |
|
rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
|
|
param_count = 8; |
|
param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; |
|
data_count = acllen; |
|
data_offset = param_offset + param_count; |
|
byte_count = 3 /* pad */ + param_count; |
|
|
|
pSMB->DataCount = cpu_to_le32(data_count); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->MaxParameterCount = cpu_to_le32(4); |
|
pSMB->MaxDataCount = cpu_to_le32(16384); |
|
pSMB->ParameterCount = cpu_to_le32(param_count); |
|
pSMB->ParameterOffset = cpu_to_le32(param_offset); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->DataOffset = cpu_to_le32(data_offset); |
|
pSMB->SetupCount = 0; |
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); |
|
pSMB->ByteCount = cpu_to_le16(byte_count+data_count); |
|
|
|
pSMB->Fid = fid; /* file handle always le */ |
|
pSMB->Reserved2 = 0; |
|
pSMB->AclFlags = cpu_to_le32(aclflag); |
|
|
|
if (pntsd && acllen) { |
|
memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
|
data_offset, pntsd, acllen); |
|
inc_rfc1001_len(pSMB, byte_count + data_count); |
|
} else |
|
inc_rfc1001_len(pSMB, byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
|
|
cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
|
bytes_returned, rc); |
|
if (rc) |
|
cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto setCifsAclRetry; |
|
|
|
return (rc); |
|
} |
|
|
|
|
|
/* Legacy Query Path Information call for lookup to old servers such |
|
as Win9x/WinME */ |
|
int |
|
SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *search_name, FILE_ALL_INFO *data, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
QUERY_INFORMATION_REQ *pSMB; |
|
QUERY_INFORMATION_RSP *pSMBr; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
|
|
cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
|
QInfRetry: |
|
rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, |
|
search_name, PATH_MAX, nls_codepage, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, search_name); |
|
} |
|
pSMB->BufferFormat = 0x04; |
|
name_len++; /* account for buffer type byte */ |
|
inc_rfc1001_len(pSMB, (__u16)name_len); |
|
pSMB->ByteCount = cpu_to_le16(name_len); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
|
} else if (data) { |
|
struct timespec64 ts; |
|
__u32 time = le32_to_cpu(pSMBr->last_write_time); |
|
|
|
/* decode response */ |
|
/* BB FIXME - add time zone adjustment BB */ |
|
memset(data, 0, sizeof(FILE_ALL_INFO)); |
|
ts.tv_nsec = 0; |
|
ts.tv_sec = time; |
|
/* decode time fields */ |
|
data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
|
data->LastWriteTime = data->ChangeTime; |
|
data->LastAccessTime = 0; |
|
data->AllocationSize = |
|
cpu_to_le64(le32_to_cpu(pSMBr->size)); |
|
data->EndOfFile = data->AllocationSize; |
|
data->Attributes = |
|
cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
|
} else |
|
rc = -EIO; /* bad buffer passed in */ |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto QInfRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
u16 netfid, FILE_ALL_INFO *pFindData) |
|
{ |
|
struct smb_t2_qfi_req *pSMB = NULL; |
|
struct smb_t2_qfi_rsp *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
__u16 params, byte_count; |
|
|
|
QFileInfoRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2 /* level */ + 2 /* fid */; |
|
pSMB->t2.TotalDataCount = 0; |
|
pSMB->t2.MaxParameterCount = cpu_to_le16(4); |
|
/* BB find exact max data count below from sess structure BB */ |
|
pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
|
pSMB->t2.MaxSetupCount = 0; |
|
pSMB->t2.Reserved = 0; |
|
pSMB->t2.Flags = 0; |
|
pSMB->t2.Timeout = 0; |
|
pSMB->t2.Reserved2 = 0; |
|
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, |
|
Fid) - 4); |
|
pSMB->t2.DataCount = 0; |
|
pSMB->t2.DataOffset = 0; |
|
pSMB->t2.SetupCount = 1; |
|
pSMB->t2.Reserved3 = 0; |
|
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->t2.TotalParameterCount = cpu_to_le16(params); |
|
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); |
|
pSMB->Pad = 0; |
|
pSMB->Fid = netfid; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
|
rc = -EIO; |
|
else if (get_bcc(&pSMBr->hdr) < 40) |
|
rc = -EIO; /* bad smb */ |
|
else if (pFindData) { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
memcpy((char *) pFindData, |
|
(char *) &pSMBr->hdr.Protocol + |
|
data_offset, sizeof(FILE_ALL_INFO)); |
|
} else |
|
rc = -ENOMEM; |
|
} |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto QFileInfoRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *search_name, FILE_ALL_INFO *data, |
|
int legacy /* old style infolevel */, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
/* level 263 SMB_QUERY_FILE_ALL_INFO */ |
|
TRANSACTION2_QPI_REQ *pSMB = NULL; |
|
TRANSACTION2_QPI_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
__u16 params, byte_count; |
|
|
|
/* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
|
QPathInfoRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, search_name); |
|
} |
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(4000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
if (legacy) |
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
|
else |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
|
rc = -EIO; |
|
else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
|
rc = -EIO; /* bad smb */ |
|
else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
|
rc = -EIO; /* 24 or 26 expected but we do not read |
|
last field */ |
|
else if (data) { |
|
int size; |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
|
|
/* |
|
* On legacy responses we do not read the last field, |
|
* EAsize, fortunately since it varies by subdialect and |
|
* also note it differs on Set vs Get, ie two bytes or 4 |
|
* bytes depending but we don't care here. |
|
*/ |
|
if (legacy) |
|
size = sizeof(FILE_INFO_STANDARD); |
|
else |
|
size = sizeof(FILE_ALL_INFO); |
|
memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
|
data_offset, size); |
|
} else |
|
rc = -ENOMEM; |
|
} |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto QPathInfoRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
|
{ |
|
struct smb_t2_qfi_req *pSMB = NULL; |
|
struct smb_t2_qfi_rsp *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
__u16 params, byte_count; |
|
|
|
UnixQFileInfoRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2 /* level */ + 2 /* fid */; |
|
pSMB->t2.TotalDataCount = 0; |
|
pSMB->t2.MaxParameterCount = cpu_to_le16(4); |
|
/* BB find exact max data count below from sess structure BB */ |
|
pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
|
pSMB->t2.MaxSetupCount = 0; |
|
pSMB->t2.Reserved = 0; |
|
pSMB->t2.Flags = 0; |
|
pSMB->t2.Timeout = 0; |
|
pSMB->t2.Reserved2 = 0; |
|
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, |
|
Fid) - 4); |
|
pSMB->t2.DataCount = 0; |
|
pSMB->t2.DataOffset = 0; |
|
pSMB->t2.SetupCount = 1; |
|
pSMB->t2.Reserved3 = 0; |
|
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->t2.TotalParameterCount = cpu_to_le16(params); |
|
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
|
pSMB->Pad = 0; |
|
pSMB->Fid = netfid; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
|
cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
|
rc = -EIO; /* bad smb */ |
|
} else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
memcpy((char *) pFindData, |
|
(char *) &pSMBr->hdr.Protocol + |
|
data_offset, |
|
sizeof(FILE_UNIX_BASIC_INFO)); |
|
} |
|
} |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto UnixQFileInfoRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
const unsigned char *searchName, |
|
FILE_UNIX_BASIC_INFO *pFindData, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
/* SMB_QUERY_FILE_UNIX_BASIC */ |
|
TRANSACTION2_QPI_REQ *pSMB = NULL; |
|
TRANSACTION2_QPI_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
int name_len; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
|
UnixQPathInfoRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, searchName); |
|
} |
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(4000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
|
cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
|
rc = -EIO; /* bad smb */ |
|
} else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
memcpy((char *) pFindData, |
|
(char *) &pSMBr->hdr.Protocol + |
|
data_offset, |
|
sizeof(FILE_UNIX_BASIC_INFO)); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto UnixQPathInfoRetry; |
|
|
|
return rc; |
|
} |
|
|
|
/* xid, tcon, searchName and codepage are input parms, rest are returned */ |
|
int |
|
CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *searchName, struct cifs_sb_info *cifs_sb, |
|
__u16 *pnetfid, __u16 search_flags, |
|
struct cifs_search_info *psrch_inf, bool msearch) |
|
{ |
|
/* level 257 SMB_ */ |
|
TRANSACTION2_FFIRST_REQ *pSMB = NULL; |
|
TRANSACTION2_FFIRST_RSP *pSMBr = NULL; |
|
T2_FFIRST_RSP_PARMS *parms; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
int name_len, remap; |
|
__u16 params, byte_count; |
|
struct nls_table *nls_codepage; |
|
|
|
cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
|
|
|
findFirstRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
nls_codepage = cifs_sb->local_nls; |
|
remap = cifs_remap(cifs_sb); |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
|
PATH_MAX, nls_codepage, remap); |
|
/* We can not add the asterik earlier in case |
|
it got remapped to 0xF03A as if it were part of the |
|
directory name instead of a wildcard */ |
|
name_len *= 2; |
|
if (msearch) { |
|
pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); |
|
pSMB->FileName[name_len+1] = 0; |
|
pSMB->FileName[name_len+2] = '*'; |
|
pSMB->FileName[name_len+3] = 0; |
|
name_len += 4; /* now the trailing null */ |
|
/* null terminate just in case */ |
|
pSMB->FileName[name_len] = 0; |
|
pSMB->FileName[name_len+1] = 0; |
|
name_len += 2; |
|
} |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, searchName); |
|
if (msearch) { |
|
if (WARN_ON_ONCE(name_len > PATH_MAX-2)) |
|
name_len = PATH_MAX-2; |
|
/* overwrite nul byte */ |
|
pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb); |
|
pSMB->FileName[name_len] = '*'; |
|
pSMB->FileName[name_len+1] = 0; |
|
name_len += 2; |
|
} |
|
} |
|
|
|
params = 12 + name_len /* includes null */ ; |
|
pSMB->TotalDataCount = 0; /* no EAs */ |
|
pSMB->MaxParameterCount = cpu_to_le16(10); |
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16( |
|
offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
|
- 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); |
|
pSMB->SearchAttributes = |
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | |
|
ATTR_DIRECTORY); |
|
pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
|
pSMB->SearchFlags = cpu_to_le16(search_flags); |
|
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
|
|
|
/* BB what should we set StorageType to? Does it matter? BB */ |
|
pSMB->SearchStorageType = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
|
|
|
if (rc) {/* BB add logic to retry regular search if Unix search |
|
rejected unexpectedly by server */ |
|
/* BB Add code to handle unsupported level rc */ |
|
cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
/* BB eventually could optimize out free and realloc of buf */ |
|
/* for this case */ |
|
if (rc == -EAGAIN) |
|
goto findFirstRetry; |
|
} else { /* decode response */ |
|
/* BB remember to free buffer if error BB */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
if (rc == 0) { |
|
unsigned int lnoff; |
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
|
psrch_inf->unicode = true; |
|
else |
|
psrch_inf->unicode = false; |
|
|
|
psrch_inf->ntwrk_buf_start = (char *)pSMBr; |
|
psrch_inf->smallBuf = false; |
|
psrch_inf->srch_entries_start = |
|
(char *) &pSMBr->hdr.Protocol + |
|
le16_to_cpu(pSMBr->t2.DataOffset); |
|
parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
|
le16_to_cpu(pSMBr->t2.ParameterOffset)); |
|
|
|
if (parms->EndofSearch) |
|
psrch_inf->endOfSearch = true; |
|
else |
|
psrch_inf->endOfSearch = false; |
|
|
|
psrch_inf->entries_in_buffer = |
|
le16_to_cpu(parms->SearchCount); |
|
psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
|
psrch_inf->entries_in_buffer; |
|
lnoff = le16_to_cpu(parms->LastNameOffset); |
|
if (CIFSMaxBufSize < lnoff) { |
|
cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
|
psrch_inf->last_entry = NULL; |
|
return rc; |
|
} |
|
|
|
psrch_inf->last_entry = psrch_inf->srch_entries_start + |
|
lnoff; |
|
|
|
if (pnetfid) |
|
*pnetfid = parms->SearchHandle; |
|
} else { |
|
cifs_buf_release(pSMB); |
|
} |
|
} |
|
|
|
return rc; |
|
} |
|
|
|
int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
|
__u16 searchHandle, __u16 search_flags, |
|
struct cifs_search_info *psrch_inf) |
|
{ |
|
TRANSACTION2_FNEXT_REQ *pSMB = NULL; |
|
TRANSACTION2_FNEXT_RSP *pSMBr = NULL; |
|
T2_FNEXT_RSP_PARMS *parms; |
|
char *response_data; |
|
int rc = 0; |
|
int bytes_returned; |
|
unsigned int name_len; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In FindNext\n"); |
|
|
|
if (psrch_inf->endOfSearch) |
|
return -ENOENT; |
|
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
|
byte_count = 0; |
|
pSMB->TotalDataCount = 0; /* no EAs */ |
|
pSMB->MaxParameterCount = cpu_to_le16(8); |
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16( |
|
offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); |
|
pSMB->SearchHandle = searchHandle; /* always kept as le */ |
|
pSMB->SearchCount = |
|
cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
|
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
|
pSMB->ResumeKey = psrch_inf->resume_key; |
|
pSMB->SearchFlags = cpu_to_le16(search_flags); |
|
|
|
name_len = psrch_inf->resume_name_len; |
|
params += name_len; |
|
if (name_len < PATH_MAX) { |
|
memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
|
byte_count += name_len; |
|
/* 14 byte parm len above enough for 2 byte null terminator */ |
|
pSMB->ResumeFileName[name_len] = 0; |
|
pSMB->ResumeFileName[name_len+1] = 0; |
|
} else { |
|
rc = -EINVAL; |
|
goto FNext2_err_exit; |
|
} |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
|
if (rc) { |
|
if (rc == -EBADF) { |
|
psrch_inf->endOfSearch = true; |
|
cifs_buf_release(pSMB); |
|
rc = 0; /* search probably was closed at end of search*/ |
|
} else |
|
cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc == 0) { |
|
unsigned int lnoff; |
|
|
|
/* BB fixme add lock for file (srch_info) struct here */ |
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
|
psrch_inf->unicode = true; |
|
else |
|
psrch_inf->unicode = false; |
|
response_data = (char *) &pSMBr->hdr.Protocol + |
|
le16_to_cpu(pSMBr->t2.ParameterOffset); |
|
parms = (T2_FNEXT_RSP_PARMS *)response_data; |
|
response_data = (char *)&pSMBr->hdr.Protocol + |
|
le16_to_cpu(pSMBr->t2.DataOffset); |
|
if (psrch_inf->smallBuf) |
|
cifs_small_buf_release( |
|
psrch_inf->ntwrk_buf_start); |
|
else |
|
cifs_buf_release(psrch_inf->ntwrk_buf_start); |
|
psrch_inf->srch_entries_start = response_data; |
|
psrch_inf->ntwrk_buf_start = (char *)pSMB; |
|
psrch_inf->smallBuf = false; |
|
if (parms->EndofSearch) |
|
psrch_inf->endOfSearch = true; |
|
else |
|
psrch_inf->endOfSearch = false; |
|
psrch_inf->entries_in_buffer = |
|
le16_to_cpu(parms->SearchCount); |
|
psrch_inf->index_of_last_entry += |
|
psrch_inf->entries_in_buffer; |
|
lnoff = le16_to_cpu(parms->LastNameOffset); |
|
if (CIFSMaxBufSize < lnoff) { |
|
cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
|
psrch_inf->last_entry = NULL; |
|
return rc; |
|
} else |
|
psrch_inf->last_entry = |
|
psrch_inf->srch_entries_start + lnoff; |
|
|
|
/* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
|
psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ |
|
|
|
/* BB fixme add unlock here */ |
|
} |
|
|
|
} |
|
|
|
/* BB On error, should we leave previous search buf (and count and |
|
last entry fields) intact or free the previous one? */ |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
FNext2_err_exit: |
|
if (rc != 0) |
|
cifs_buf_release(pSMB); |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
|
const __u16 searchHandle) |
|
{ |
|
int rc = 0; |
|
FINDCLOSE_REQ *pSMB = NULL; |
|
|
|
cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
|
rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
|
|
|
/* no sense returning error if session restarted |
|
as file handle has been closed */ |
|
if (rc == -EAGAIN) |
|
return 0; |
|
if (rc) |
|
return rc; |
|
|
|
pSMB->FileID = searchHandle; |
|
pSMB->ByteCount = 0; |
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
if (rc) |
|
cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
|
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
|
|
|
/* Since session is dead, search handle closed on server already */ |
|
if (rc == -EAGAIN) |
|
rc = 0; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *search_name, __u64 *inode_number, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
int rc = 0; |
|
TRANSACTION2_QPI_REQ *pSMB = NULL; |
|
TRANSACTION2_QPI_RSP *pSMBr = NULL; |
|
int name_len, bytes_returned; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
|
if (tcon == NULL) |
|
return -ENODEV; |
|
|
|
GetInodeNumberRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, |
|
search_name, PATH_MAX, nls_codepage, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, search_name); |
|
} |
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max data count below from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(4000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
|
} else { |
|
/* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
/* BB also check enough total bytes returned */ |
|
if (rc || get_bcc(&pSMBr->hdr) < 2) |
|
/* If rc should we check for EOPNOSUPP and |
|
disable the srvino flag? or in caller? */ |
|
rc = -EIO; /* bad smb */ |
|
else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
|
struct file_internal_info *pfinfo; |
|
/* BB Do we need a cast or hash here ? */ |
|
if (count < 8) { |
|
cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n"); |
|
rc = -EIO; |
|
goto GetInodeNumOut; |
|
} |
|
pfinfo = (struct file_internal_info *) |
|
(data_offset + (char *) &pSMBr->hdr.Protocol); |
|
*inode_number = le64_to_cpu(pfinfo->UniqueId); |
|
} |
|
} |
|
GetInodeNumOut: |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto GetInodeNumberRetry; |
|
return rc; |
|
} |
|
|
|
int |
|
CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
|
const char *search_name, struct dfs_info3_param **target_nodes, |
|
unsigned int *num_of_nodes, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
/* TRANS2_GET_DFS_REFERRAL */ |
|
TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; |
|
TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
__u16 params, byte_count; |
|
*num_of_nodes = 0; |
|
*target_nodes = NULL; |
|
|
|
cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
|
if (ses == NULL || ses->tcon_ipc == NULL) |
|
return -ENODEV; |
|
|
|
getDFSRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
/* server pointer checked in called function, |
|
but should never be null here anyway */ |
|
pSMB->hdr.Mid = get_next_mid(ses->server); |
|
pSMB->hdr.Tid = ses->tcon_ipc->tid; |
|
pSMB->hdr.Uid = ses->Suid; |
|
if (ses->capabilities & CAP_STATUS32) |
|
pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
|
if (ses->capabilities & CAP_DFS) |
|
pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
|
|
|
if (ses->capabilities & CAP_UNICODE) { |
|
pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
|
search_name, PATH_MAX, nls_codepage, |
|
remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { /* BB improve the check for buffer overruns BB */ |
|
name_len = copy_path_name(pSMB->RequestFileName, search_name); |
|
} |
|
|
|
if (ses->server->sign) |
|
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
|
|
|
pSMB->hdr.Uid = ses->Suid; |
|
|
|
params = 2 /* level */ + name_len /*includes null */ ; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->MaxParameterCount = 0; |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(4000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); |
|
byte_count = params + 3 /* pad */ ; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->MaxReferralLevel = cpu_to_le16(3); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
|
goto GetDFSRefExit; |
|
} |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
/* BB Also check if enough total bytes returned? */ |
|
if (rc || get_bcc(&pSMBr->hdr) < 17) { |
|
rc = -EIO; /* bad smb */ |
|
goto GetDFSRefExit; |
|
} |
|
|
|
cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
|
get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); |
|
|
|
/* parse returned result into more usable form */ |
|
rc = parse_dfs_referrals(&pSMBr->dfs_data, |
|
le16_to_cpu(pSMBr->t2.DataCount), |
|
num_of_nodes, target_nodes, nls_codepage, |
|
remap, search_name, |
|
(pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
|
|
|
GetDFSRefExit: |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto getDFSRetry; |
|
|
|
return rc; |
|
} |
|
|
|
/* Query File System Info such as free space to old servers such as Win 9x */ |
|
int |
|
SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
struct kstatfs *FSData) |
|
{ |
|
/* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ |
|
TRANSACTION2_QFSI_REQ *pSMB = NULL; |
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
|
FILE_SYSTEM_ALLOC_INFO *response_data; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "OldQFSInfo\n"); |
|
oldQFSInfoRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2; /* level */ |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 18) |
|
rc = -EIO; /* bad smb */ |
|
else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
|
get_bcc(&pSMBr->hdr), data_offset); |
|
|
|
response_data = (FILE_SYSTEM_ALLOC_INFO *) |
|
(((char *) &pSMBr->hdr.Protocol) + data_offset); |
|
FSData->f_bsize = |
|
le16_to_cpu(response_data->BytesPerSector) * |
|
le32_to_cpu(response_data-> |
|
SectorsPerAllocationUnit); |
|
/* |
|
* much prefer larger but if server doesn't report |
|
* a valid size than 4K is a reasonable minimum |
|
*/ |
|
if (FSData->f_bsize < 512) |
|
FSData->f_bsize = 4096; |
|
|
|
FSData->f_blocks = |
|
le32_to_cpu(response_data->TotalAllocationUnits); |
|
FSData->f_bfree = FSData->f_bavail = |
|
le32_to_cpu(response_data->FreeAllocationUnits); |
|
cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
|
(unsigned long long)FSData->f_blocks, |
|
(unsigned long long)FSData->f_bfree, |
|
FSData->f_bsize); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto oldQFSInfoRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
struct kstatfs *FSData) |
|
{ |
|
/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ |
|
TRANSACTION2_QFSI_REQ *pSMB = NULL; |
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
|
FILE_SYSTEM_INFO *response_data; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In QFSInfo\n"); |
|
QFSInfoRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2; /* level */ |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 24) |
|
rc = -EIO; /* bad smb */ |
|
else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
|
|
response_data = |
|
(FILE_SYSTEM_INFO |
|
*) (((char *) &pSMBr->hdr.Protocol) + |
|
data_offset); |
|
FSData->f_bsize = |
|
le32_to_cpu(response_data->BytesPerSector) * |
|
le32_to_cpu(response_data-> |
|
SectorsPerAllocationUnit); |
|
/* |
|
* much prefer larger but if server doesn't report |
|
* a valid size than 4K is a reasonable minimum |
|
*/ |
|
if (FSData->f_bsize < 512) |
|
FSData->f_bsize = 4096; |
|
|
|
FSData->f_blocks = |
|
le64_to_cpu(response_data->TotalAllocationUnits); |
|
FSData->f_bfree = FSData->f_bavail = |
|
le64_to_cpu(response_data->FreeAllocationUnits); |
|
cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
|
(unsigned long long)FSData->f_blocks, |
|
(unsigned long long)FSData->f_bfree, |
|
FSData->f_bsize); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto QFSInfoRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
|
{ |
|
/* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ |
|
TRANSACTION2_QFSI_REQ *pSMB = NULL; |
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
|
FILE_SYSTEM_ATTRIBUTE_INFO *response_data; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
|
QFSAttributeRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2; /* level */ |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 13) { |
|
/* BB also check if enough bytes returned */ |
|
rc = -EIO; /* bad smb */ |
|
} else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
response_data = |
|
(FILE_SYSTEM_ATTRIBUTE_INFO |
|
*) (((char *) &pSMBr->hdr.Protocol) + |
|
data_offset); |
|
memcpy(&tcon->fsAttrInfo, response_data, |
|
sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto QFSAttributeRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
|
{ |
|
/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ |
|
TRANSACTION2_QFSI_REQ *pSMB = NULL; |
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
|
FILE_SYSTEM_DEVICE_INFO *response_data; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
|
QFSDeviceRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2; /* level */ |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
|
|
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < |
|
sizeof(FILE_SYSTEM_DEVICE_INFO)) |
|
rc = -EIO; /* bad smb */ |
|
else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
response_data = |
|
(FILE_SYSTEM_DEVICE_INFO *) |
|
(((char *) &pSMBr->hdr.Protocol) + |
|
data_offset); |
|
memcpy(&tcon->fsDevInfo, response_data, |
|
sizeof(FILE_SYSTEM_DEVICE_INFO)); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto QFSDeviceRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
|
{ |
|
/* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ |
|
TRANSACTION2_QFSI_REQ *pSMB = NULL; |
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
|
FILE_SYSTEM_UNIX_INFO *response_data; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In QFSUnixInfo\n"); |
|
QFSUnixRetry: |
|
rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
|
(void **) &pSMB, (void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2; /* level */ |
|
pSMB->TotalDataCount = 0; |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(100); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
|
smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 13) { |
|
rc = -EIO; /* bad smb */ |
|
} else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
response_data = |
|
(FILE_SYSTEM_UNIX_INFO |
|
*) (((char *) &pSMBr->hdr.Protocol) + |
|
data_offset); |
|
memcpy(&tcon->fsUnixInfo, response_data, |
|
sizeof(FILE_SYSTEM_UNIX_INFO)); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto QFSUnixRetry; |
|
|
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
|
{ |
|
/* level 0x200 SMB_SET_CIFS_UNIX_INFO */ |
|
TRANSACTION2_SETFSI_REQ *pSMB = NULL; |
|
TRANSACTION2_SETFSI_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, param_offset, offset, byte_count; |
|
|
|
cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
|
SETFSUnixRetry: |
|
/* BB switch to small buf init to save memory */ |
|
rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
|
(void **) &pSMB, (void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 4; /* 2 bytes zero followed by info level. */ |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
|
- 4; |
|
offset = param_offset + params; |
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(4); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(100); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); |
|
byte_count = 1 /* pad */ + params + 12; |
|
|
|
pSMB->DataCount = cpu_to_le16(12); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
|
|
/* Params. */ |
|
pSMB->FileNum = 0; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); |
|
|
|
/* Data. */ |
|
pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); |
|
pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); |
|
pSMB->ClientUnixCap = cpu_to_le64(cap); |
|
|
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
if (rc) |
|
rc = -EIO; /* bad smb */ |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto SETFSUnixRetry; |
|
|
|
return rc; |
|
} |
|
|
|
|
|
|
|
int |
|
CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
struct kstatfs *FSData) |
|
{ |
|
/* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ |
|
TRANSACTION2_QFSI_REQ *pSMB = NULL; |
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL; |
|
FILE_SYSTEM_POSIX_INFO *response_data; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, byte_count; |
|
|
|
cifs_dbg(FYI, "In QFSPosixInfo\n"); |
|
QFSPosixRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
params = 2; /* level */ |
|
pSMB->TotalDataCount = 0; |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(100); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
|
smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); |
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
|
} else { /* decode response */ |
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 13) { |
|
rc = -EIO; /* bad smb */ |
|
} else { |
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
response_data = |
|
(FILE_SYSTEM_POSIX_INFO |
|
*) (((char *) &pSMBr->hdr.Protocol) + |
|
data_offset); |
|
FSData->f_bsize = |
|
le32_to_cpu(response_data->BlockSize); |
|
/* |
|
* much prefer larger but if server doesn't report |
|
* a valid size than 4K is a reasonable minimum |
|
*/ |
|
if (FSData->f_bsize < 512) |
|
FSData->f_bsize = 4096; |
|
|
|
FSData->f_blocks = |
|
le64_to_cpu(response_data->TotalBlocks); |
|
FSData->f_bfree = |
|
le64_to_cpu(response_data->BlocksAvail); |
|
if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
|
FSData->f_bavail = FSData->f_bfree; |
|
} else { |
|
FSData->f_bavail = |
|
le64_to_cpu(response_data->UserBlocksAvail); |
|
} |
|
if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
|
FSData->f_files = |
|
le64_to_cpu(response_data->TotalFileNodes); |
|
if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
|
FSData->f_ffree = |
|
le64_to_cpu(response_data->FreeFileNodes); |
|
} |
|
} |
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto QFSPosixRetry; |
|
|
|
return rc; |
|
} |
|
|
|
|
|
/* |
|
* We can not use write of zero bytes trick to set file size due to need for |
|
* large file support. Also note that this SetPathInfo is preferred to |
|
* SetFileInfo based method in next routine which is only needed to work around |
|
* a sharing violation bugin Samba which this routine can run into. |
|
*/ |
|
int |
|
CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
|
bool set_allocation) |
|
{ |
|
struct smb_com_transaction2_spi_req *pSMB = NULL; |
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL; |
|
struct file_end_of_file_info *parm_data; |
|
int name_len; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
__u16 params, byte_count, data_count, param_offset, offset; |
|
|
|
cifs_dbg(FYI, "In SetEOF\n"); |
|
SetEOFRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
|
PATH_MAX, cifs_sb->local_nls, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, file_name); |
|
} |
|
params = 6 + name_len; |
|
data_count = sizeof(struct file_end_of_file_info); |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
pSMB->MaxDataCount = cpu_to_le16(4100); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
if (set_allocation) { |
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); |
|
else |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); |
|
} else /* Set File Size */ { |
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
|
else |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
|
} |
|
|
|
parm_data = |
|
(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + |
|
offset); |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + data_count; |
|
pSMB->DataCount = cpu_to_le16(data_count); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
parm_data->FileSize = cpu_to_le64(size); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto SetEOFRetry; |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
|
struct cifsFileInfo *cfile, __u64 size, bool set_allocation) |
|
{ |
|
struct smb_com_transaction2_sfi_req *pSMB = NULL; |
|
struct file_end_of_file_info *parm_data; |
|
int rc = 0; |
|
__u16 params, param_offset, offset, byte_count, count; |
|
|
|
cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
|
(long long)size); |
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
|
|
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); |
|
|
|
params = 6; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
|
offset = param_offset + params; |
|
|
|
count = sizeof(struct file_end_of_file_info); |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
parm_data = |
|
(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) |
|
+ offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
parm_data->FileSize = cpu_to_le64(size); |
|
pSMB->Fid = cfile->fid.netfid; |
|
if (set_allocation) { |
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); |
|
else |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); |
|
} else /* Set File Size */ { |
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
|
else |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
|
} |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
|
rc); |
|
} |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
|
|
return rc; |
|
} |
|
|
|
/* Some legacy servers such as NT4 require that the file times be set on |
|
an open handle, rather than by pathname - this is awkward due to |
|
potential access conflicts on the open, but it is unavoidable for these |
|
old servers since the only other choice is to go from 100 nanosecond DCE |
|
time and resort to the original setpathinfo level which takes the ancient |
|
DOS time format with 2 second granularity */ |
|
int |
|
CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
|
{ |
|
struct smb_com_transaction2_sfi_req *pSMB = NULL; |
|
char *data_offset; |
|
int rc = 0; |
|
__u16 params, param_offset, offset, byte_count, count; |
|
|
|
cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
|
|
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); |
|
|
|
params = 6; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
|
offset = param_offset + params; |
|
|
|
data_offset = (char *)pSMB + |
|
offsetof(struct smb_hdr, Protocol) + offset; |
|
|
|
count = sizeof(FILE_BASIC_INFO); |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find max SMB PDU from sess */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->Fid = fid; |
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); |
|
else |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
|
rc); |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
|
bool delete_file, __u16 fid, __u32 pid_of_opener) |
|
{ |
|
struct smb_com_transaction2_sfi_req *pSMB = NULL; |
|
char *data_offset; |
|
int rc = 0; |
|
__u16 params, param_offset, offset, byte_count, count; |
|
|
|
cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
|
|
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); |
|
|
|
params = 6; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
|
offset = param_offset + params; |
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
|
|
|
count = 1; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find max SMB PDU from sess */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->Fid = fid; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
*data_offset = delete_file ? 1 : 0; |
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
|
|
|
return rc; |
|
} |
|
|
|
static int |
|
CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fileName, const FILE_BASIC_INFO *data, |
|
const struct nls_table *nls_codepage, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
int oplock = 0; |
|
struct cifs_open_parms oparms; |
|
struct cifs_fid fid; |
|
int rc; |
|
|
|
oparms.tcon = tcon; |
|
oparms.cifs_sb = cifs_sb; |
|
oparms.desired_access = GENERIC_WRITE; |
|
oparms.create_options = cifs_create_options(cifs_sb, 0); |
|
oparms.disposition = FILE_OPEN; |
|
oparms.path = fileName; |
|
oparms.fid = &fid; |
|
oparms.reconnect = false; |
|
|
|
rc = CIFS_open(xid, &oparms, &oplock, NULL); |
|
if (rc) |
|
goto out; |
|
|
|
rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid); |
|
CIFSSMBClose(xid, tcon, fid.netfid); |
|
out: |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fileName, const FILE_BASIC_INFO *data, |
|
const struct nls_table *nls_codepage, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
TRANSACTION2_SPI_REQ *pSMB = NULL; |
|
TRANSACTION2_SPI_RSP *pSMBr = NULL; |
|
int name_len; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
char *data_offset; |
|
__u16 params, param_offset, offset, byte_count, count; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
cifs_dbg(FYI, "In SetTimes\n"); |
|
|
|
SetTimesRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, fileName); |
|
} |
|
|
|
params = 6 + name_len; |
|
count = sizeof(FILE_BASIC_INFO); |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
|
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); |
|
else |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto SetTimesRetry; |
|
|
|
if (rc == -EOPNOTSUPP) |
|
return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data, |
|
nls_codepage, cifs_sb); |
|
|
|
return rc; |
|
} |
|
|
|
/* Can not be used to set time stamps yet (due to old DOS time format) */ |
|
/* Can be used to set attributes */ |
|
#if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug |
|
handling it anyway and NT4 was what we thought it would be needed for |
|
Do not delete it until we prove whether needed for Win9x though */ |
|
int |
|
CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
|
__u16 dos_attrs, const struct nls_table *nls_codepage) |
|
{ |
|
SETATTR_REQ *pSMB = NULL; |
|
SETATTR_RSP *pSMBr = NULL; |
|
int rc = 0; |
|
int bytes_returned; |
|
int name_len; |
|
|
|
cifs_dbg(FYI, "In SetAttrLegacy\n"); |
|
|
|
SetAttrLgcyRetry: |
|
rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
ConvertToUTF16((__le16 *) pSMB->fileName, fileName, |
|
PATH_MAX, nls_codepage); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->fileName, fileName); |
|
} |
|
pSMB->attr = cpu_to_le16(dos_attrs); |
|
pSMB->BufferFormat = 0x04; |
|
inc_rfc1001_len(pSMB, name_len + 1); |
|
pSMB->ByteCount = cpu_to_le16(name_len + 1); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto SetAttrLgcyRetry; |
|
|
|
return rc; |
|
} |
|
#endif /* temporarily unneeded SetAttr legacy function */ |
|
|
|
static void |
|
cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, |
|
const struct cifs_unix_set_info_args *args) |
|
{ |
|
u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
|
u64 mode = args->mode; |
|
|
|
if (uid_valid(args->uid)) |
|
uid = from_kuid(&init_user_ns, args->uid); |
|
if (gid_valid(args->gid)) |
|
gid = from_kgid(&init_user_ns, args->gid); |
|
|
|
/* |
|
* Samba server ignores set of file size to zero due to bugs in some |
|
* older clients, but we should be precise - we use SetFileSize to |
|
* set file size and do not want to truncate file size to zero |
|
* accidentally as happened on one Samba server beta by putting |
|
* zero instead of -1 here |
|
*/ |
|
data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); |
|
data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); |
|
data_offset->LastStatusChange = cpu_to_le64(args->ctime); |
|
data_offset->LastAccessTime = cpu_to_le64(args->atime); |
|
data_offset->LastModificationTime = cpu_to_le64(args->mtime); |
|
data_offset->Uid = cpu_to_le64(uid); |
|
data_offset->Gid = cpu_to_le64(gid); |
|
/* better to leave device as zero when it is */ |
|
data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); |
|
data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); |
|
data_offset->Permissions = cpu_to_le64(mode); |
|
|
|
if (S_ISREG(mode)) |
|
data_offset->Type = cpu_to_le32(UNIX_FILE); |
|
else if (S_ISDIR(mode)) |
|
data_offset->Type = cpu_to_le32(UNIX_DIR); |
|
else if (S_ISLNK(mode)) |
|
data_offset->Type = cpu_to_le32(UNIX_SYMLINK); |
|
else if (S_ISCHR(mode)) |
|
data_offset->Type = cpu_to_le32(UNIX_CHARDEV); |
|
else if (S_ISBLK(mode)) |
|
data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); |
|
else if (S_ISFIFO(mode)) |
|
data_offset->Type = cpu_to_le32(UNIX_FIFO); |
|
else if (S_ISSOCK(mode)) |
|
data_offset->Type = cpu_to_le32(UNIX_SOCKET); |
|
} |
|
|
|
int |
|
CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
const struct cifs_unix_set_info_args *args, |
|
u16 fid, u32 pid_of_opener) |
|
{ |
|
struct smb_com_transaction2_sfi_req *pSMB = NULL; |
|
char *data_offset; |
|
int rc = 0; |
|
u16 params, param_offset, offset, byte_count, count; |
|
|
|
cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
|
|
|
if (rc) |
|
return rc; |
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); |
|
|
|
params = 6; |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; |
|
offset = param_offset + params; |
|
|
|
data_offset = (char *)pSMB + |
|
offsetof(struct smb_hdr, Protocol) + offset; |
|
|
|
count = sizeof(FILE_UNIX_BASIC_INFO); |
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find max SMB PDU from sess */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->Fid = fid; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
|
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
|
cifs_small_buf_release(pSMB); |
|
if (rc) |
|
cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
|
rc); |
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls |
|
since file handle passed in no longer valid */ |
|
|
|
return rc; |
|
} |
|
|
|
int |
|
CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *file_name, |
|
const struct cifs_unix_set_info_args *args, |
|
const struct nls_table *nls_codepage, int remap) |
|
{ |
|
TRANSACTION2_SPI_REQ *pSMB = NULL; |
|
TRANSACTION2_SPI_RSP *pSMBr = NULL; |
|
int name_len; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
FILE_UNIX_BASIC_INFO *data_offset; |
|
__u16 params, param_offset, offset, count, byte_count; |
|
|
|
cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
|
setPermsRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, file_name); |
|
} |
|
|
|
params = 6 + name_len; |
|
count = sizeof(FILE_UNIX_BASIC_INFO); |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
data_offset = |
|
(FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + |
|
offset); |
|
memset(data_offset, 0, count); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->DataCount = cpu_to_le16(count); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
|
|
cifs_fill_unix_set_info(data_offset, args); |
|
|
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto setPermsRetry; |
|
return rc; |
|
} |
|
|
|
#ifdef CONFIG_CIFS_XATTR |
|
/* |
|
* Do a path-based QUERY_ALL_EAS call and parse the result. This is a common |
|
* function used by listxattr and getxattr type calls. When ea_name is set, |
|
* it looks for that attribute name and stuffs that value into the EAData |
|
* buffer. When ea_name is NULL, it stuffs a list of attribute names into the |
|
* buffer. In both cases, the return value is either the length of the |
|
* resulting data or a negative error code. If EAData is a NULL pointer then |
|
* the data isn't copied to it, but the length is returned. |
|
*/ |
|
ssize_t |
|
CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
|
const unsigned char *searchName, const unsigned char *ea_name, |
|
char *EAData, size_t buf_size, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
/* BB assumes one setup word */ |
|
TRANSACTION2_QPI_REQ *pSMB = NULL; |
|
TRANSACTION2_QPI_RSP *pSMBr = NULL; |
|
int remap = cifs_remap(cifs_sb); |
|
struct nls_table *nls_codepage = cifs_sb->local_nls; |
|
int rc = 0; |
|
int bytes_returned; |
|
int list_len; |
|
struct fealist *ea_response_data; |
|
struct fea *temp_fea; |
|
char *temp_ptr; |
|
char *end_of_smb; |
|
__u16 params, byte_count, data_offset; |
|
unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
|
|
|
cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
|
QAllEAsRetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
list_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
|
PATH_MAX, nls_codepage, remap); |
|
list_len++; /* trailing null */ |
|
list_len *= 2; |
|
} else { |
|
list_len = copy_path_name(pSMB->FileName, searchName); |
|
} |
|
|
|
params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
|
pSMB->TotalDataCount = 0; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find exact max SMB PDU from sess structure BB */ |
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
pSMB->ParameterOffset = cpu_to_le16(offsetof( |
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
|
pSMB->DataCount = 0; |
|
pSMB->DataOffset = 0; |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); |
|
byte_count = params + 1 /* pad */ ; |
|
pSMB->TotalParameterCount = cpu_to_le16(params); |
|
pSMB->ParameterCount = pSMB->TotalParameterCount; |
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) { |
|
cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
|
goto QAllEAsOut; |
|
} |
|
|
|
|
|
/* BB also check enough total bytes returned */ |
|
/* BB we need to improve the validity checking |
|
of these trans2 responses */ |
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
|
if (rc || get_bcc(&pSMBr->hdr) < 4) { |
|
rc = -EIO; /* bad smb */ |
|
goto QAllEAsOut; |
|
} |
|
|
|
/* check that length of list is not more than bcc */ |
|
/* check that each entry does not go beyond length |
|
of list */ |
|
/* check that each element of each entry does not |
|
go beyond end of list */ |
|
/* validate_trans2_offsets() */ |
|
/* BB check if start of smb + data_offset > &bcc+ bcc */ |
|
|
|
data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
|
ea_response_data = (struct fealist *) |
|
(((char *) &pSMBr->hdr.Protocol) + data_offset); |
|
|
|
list_len = le32_to_cpu(ea_response_data->list_len); |
|
cifs_dbg(FYI, "ea length %d\n", list_len); |
|
if (list_len <= 8) { |
|
cifs_dbg(FYI, "empty EA list returned from server\n"); |
|
/* didn't find the named attribute */ |
|
if (ea_name) |
|
rc = -ENODATA; |
|
goto QAllEAsOut; |
|
} |
|
|
|
/* make sure list_len doesn't go past end of SMB */ |
|
end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
|
if ((char *)ea_response_data + list_len > end_of_smb) { |
|
cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
|
rc = -EIO; |
|
goto QAllEAsOut; |
|
} |
|
|
|
/* account for ea list len */ |
|
list_len -= 4; |
|
temp_fea = ea_response_data->list; |
|
temp_ptr = (char *)temp_fea; |
|
while (list_len > 0) { |
|
unsigned int name_len; |
|
__u16 value_len; |
|
|
|
list_len -= 4; |
|
temp_ptr += 4; |
|
/* make sure we can read name_len and value_len */ |
|
if (list_len < 0) { |
|
cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
|
rc = -EIO; |
|
goto QAllEAsOut; |
|
} |
|
|
|
name_len = temp_fea->name_len; |
|
value_len = le16_to_cpu(temp_fea->value_len); |
|
list_len -= name_len + 1 + value_len; |
|
if (list_len < 0) { |
|
cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
|
rc = -EIO; |
|
goto QAllEAsOut; |
|
} |
|
|
|
if (ea_name) { |
|
if (ea_name_len == name_len && |
|
memcmp(ea_name, temp_ptr, name_len) == 0) { |
|
temp_ptr += name_len + 1; |
|
rc = value_len; |
|
if (buf_size == 0) |
|
goto QAllEAsOut; |
|
if ((size_t)value_len > buf_size) { |
|
rc = -ERANGE; |
|
goto QAllEAsOut; |
|
} |
|
memcpy(EAData, temp_ptr, value_len); |
|
goto QAllEAsOut; |
|
} |
|
} else { |
|
/* account for prefix user. and trailing null */ |
|
rc += (5 + 1 + name_len); |
|
if (rc < (int) buf_size) { |
|
memcpy(EAData, "user.", 5); |
|
EAData += 5; |
|
memcpy(EAData, temp_ptr, name_len); |
|
EAData += name_len; |
|
/* null terminate name */ |
|
*EAData = 0; |
|
++EAData; |
|
} else if (buf_size == 0) { |
|
/* skip copy - calc size only */ |
|
} else { |
|
/* stop before overrun buffer */ |
|
rc = -ERANGE; |
|
break; |
|
} |
|
} |
|
temp_ptr += name_len + 1 + value_len; |
|
temp_fea = (struct fea *)temp_ptr; |
|
} |
|
|
|
/* didn't find the named attribute */ |
|
if (ea_name) |
|
rc = -ENODATA; |
|
|
|
QAllEAsOut: |
|
cifs_buf_release(pSMB); |
|
if (rc == -EAGAIN) |
|
goto QAllEAsRetry; |
|
|
|
return (ssize_t)rc; |
|
} |
|
|
|
int |
|
CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *fileName, const char *ea_name, const void *ea_value, |
|
const __u16 ea_value_len, const struct nls_table *nls_codepage, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
struct smb_com_transaction2_spi_req *pSMB = NULL; |
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL; |
|
struct fealist *parm_data; |
|
int name_len; |
|
int rc = 0; |
|
int bytes_returned = 0; |
|
__u16 params, param_offset, byte_count, offset, count; |
|
int remap = cifs_remap(cifs_sb); |
|
|
|
cifs_dbg(FYI, "In SetEA\n"); |
|
SetEARetry: |
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
|
(void **) &pSMBr); |
|
if (rc) |
|
return rc; |
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
|
name_len = |
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
|
PATH_MAX, nls_codepage, remap); |
|
name_len++; /* trailing null */ |
|
name_len *= 2; |
|
} else { |
|
name_len = copy_path_name(pSMB->FileName, fileName); |
|
} |
|
|
|
params = 6 + name_len; |
|
|
|
/* done calculating parms using name_len of file name, |
|
now use name_len to calculate length of ea name |
|
we are going to create in the inode xattrs */ |
|
if (ea_name == NULL) |
|
name_len = 0; |
|
else |
|
name_len = strnlen(ea_name, 255); |
|
|
|
count = sizeof(*parm_data) + ea_value_len + name_len; |
|
pSMB->MaxParameterCount = cpu_to_le16(2); |
|
/* BB find max SMB PDU from sess */ |
|
pSMB->MaxDataCount = cpu_to_le16(1000); |
|
pSMB->MaxSetupCount = 0; |
|
pSMB->Reserved = 0; |
|
pSMB->Flags = 0; |
|
pSMB->Timeout = 0; |
|
pSMB->Reserved2 = 0; |
|
param_offset = offsetof(struct smb_com_transaction2_spi_req, |
|
InformationLevel) - 4; |
|
offset = param_offset + params; |
|
pSMB->InformationLevel = |
|
cpu_to_le16(SMB_SET_FILE_EA); |
|
|
|
parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
|
pSMB->ParameterOffset = cpu_to_le16(param_offset); |
|
pSMB->DataOffset = cpu_to_le16(offset); |
|
pSMB->SetupCount = 1; |
|
pSMB->Reserved3 = 0; |
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); |
|
byte_count = 3 /* pad */ + params + count; |
|
pSMB->DataCount = cpu_to_le16(count); |
|
parm_data->list_len = cpu_to_le32(count); |
|
parm_data->list[0].EA_flags = 0; |
|
/* we checked above that name len is less than 255 */ |
|
parm_data->list[0].name_len = (__u8)name_len; |
|
/* EA names are always ASCII */ |
|
if (ea_name) |
|
strncpy(parm_data->list[0].name, ea_name, name_len); |
|
parm_data->list[0].name[name_len] = 0; |
|
parm_data->list[0].value_len = cpu_to_le16(ea_value_len); |
|
/* caller ensures that ea_value_len is less than 64K but |
|
we need to ensure that it fits within the smb */ |
|
|
|
/*BB add length check to see if it would fit in |
|
negotiated SMB buffer size BB */ |
|
/* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
|
if (ea_value_len) |
|
memcpy(parm_data->list[0].name+name_len+1, |
|
ea_value, ea_value_len); |
|
|
|
pSMB->TotalDataCount = pSMB->DataCount; |
|
pSMB->ParameterCount = cpu_to_le16(params); |
|
pSMB->TotalParameterCount = pSMB->ParameterCount; |
|
pSMB->Reserved4 = 0; |
|
inc_rfc1001_len(pSMB, byte_count); |
|
pSMB->ByteCount = cpu_to_le16(byte_count); |
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
|
if (rc) |
|
cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
|
|
|
cifs_buf_release(pSMB); |
|
|
|
if (rc == -EAGAIN) |
|
goto SetEARetry; |
|
|
|
return rc; |
|
} |
|
#endif
|
|
|