mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
739 lines
20 KiB
739 lines
20 KiB
// SPDX-License-Identifier: LGPL-2.1 |
|
/* |
|
* fs/cifs/smb2inode.c |
|
* |
|
* Copyright (C) International Business Machines Corp., 2002, 2011 |
|
* Etersoft, 2012 |
|
* Author(s): Pavel Shilovsky ([email protected]), |
|
* Steve French ([email protected]) |
|
* |
|
*/ |
|
#include <linux/fs.h> |
|
#include <linux/stat.h> |
|
#include <linux/slab.h> |
|
#include <linux/pagemap.h> |
|
#include <asm/div64.h> |
|
#include "cifsfs.h" |
|
#include "cifspdu.h" |
|
#include "cifsglob.h" |
|
#include "cifsproto.h" |
|
#include "cifs_debug.h" |
|
#include "cifs_fs_sb.h" |
|
#include "cifs_unicode.h" |
|
#include "fscache.h" |
|
#include "smb2glob.h" |
|
#include "smb2pdu.h" |
|
#include "smb2proto.h" |
|
|
|
static void |
|
free_set_inf_compound(struct smb_rqst *rqst) |
|
{ |
|
if (rqst[1].rq_iov) |
|
SMB2_set_info_free(&rqst[1]); |
|
if (rqst[2].rq_iov) |
|
SMB2_close_free(&rqst[2]); |
|
} |
|
|
|
|
|
struct cop_vars { |
|
struct cifs_open_parms oparms; |
|
struct kvec rsp_iov[3]; |
|
struct smb_rqst rqst[3]; |
|
struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; |
|
struct kvec qi_iov[1]; |
|
struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; |
|
struct kvec close_iov[1]; |
|
struct smb2_file_rename_info rename_info; |
|
struct smb2_file_link_info link_info; |
|
}; |
|
|
|
static int |
|
smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, |
|
struct cifs_sb_info *cifs_sb, const char *full_path, |
|
__u32 desired_access, __u32 create_disposition, |
|
__u32 create_options, umode_t mode, void *ptr, int command, |
|
struct cifsFileInfo *cfile) |
|
{ |
|
struct cop_vars *vars = NULL; |
|
struct kvec *rsp_iov; |
|
struct smb_rqst *rqst; |
|
int rc; |
|
__le16 *utf16_path = NULL; |
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
|
struct cifs_fid fid; |
|
struct cifs_ses *ses = tcon->ses; |
|
struct TCP_Server_Info *server; |
|
int num_rqst = 0; |
|
int resp_buftype[3]; |
|
struct smb2_query_info_rsp *qi_rsp = NULL; |
|
int flags = 0; |
|
__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0}; |
|
unsigned int size[2]; |
|
void *data[2]; |
|
int len; |
|
|
|
vars = kzalloc(sizeof(*vars), GFP_ATOMIC); |
|
if (vars == NULL) |
|
return -ENOMEM; |
|
rqst = &vars->rqst[0]; |
|
rsp_iov = &vars->rsp_iov[0]; |
|
|
|
server = cifs_pick_channel(ses); |
|
|
|
if (smb3_encryption_required(tcon)) |
|
flags |= CIFS_TRANSFORM_REQ; |
|
|
|
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
|
|
|
/* We already have a handle so we can skip the open */ |
|
if (cfile) |
|
goto after_open; |
|
|
|
/* Open */ |
|
utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
|
if (!utf16_path) { |
|
rc = -ENOMEM; |
|
goto finished; |
|
} |
|
|
|
vars->oparms.tcon = tcon; |
|
vars->oparms.desired_access = desired_access; |
|
vars->oparms.disposition = create_disposition; |
|
vars->oparms.create_options = cifs_create_options(cifs_sb, create_options); |
|
vars->oparms.fid = &fid; |
|
vars->oparms.reconnect = false; |
|
vars->oparms.mode = mode; |
|
vars->oparms.cifs_sb = cifs_sb; |
|
|
|
rqst[num_rqst].rq_iov = &vars->open_iov[0]; |
|
rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE; |
|
rc = SMB2_open_init(tcon, server, |
|
&rqst[num_rqst], &oplock, &vars->oparms, |
|
utf16_path); |
|
kfree(utf16_path); |
|
if (rc) |
|
goto finished; |
|
|
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
after_open: |
|
num_rqst++; |
|
rc = 0; |
|
|
|
/* Operation */ |
|
switch (command) { |
|
case SMB2_OP_QUERY_INFO: |
|
rqst[num_rqst].rq_iov = &vars->qi_iov[0]; |
|
rqst[num_rqst].rq_nvec = 1; |
|
|
|
if (cfile) |
|
rc = SMB2_query_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
cfile->fid.persistent_fid, |
|
cfile->fid.volatile_fid, |
|
FILE_ALL_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, |
|
sizeof(struct smb2_file_all_info) + |
|
PATH_MAX * 2, 0, NULL); |
|
else { |
|
rc = SMB2_query_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
COMPOUND_FID, |
|
COMPOUND_FID, |
|
FILE_ALL_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, |
|
sizeof(struct smb2_file_all_info) + |
|
PATH_MAX * 2, 0, NULL); |
|
if (!rc) { |
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
smb2_set_related(&rqst[num_rqst]); |
|
} |
|
} |
|
|
|
if (rc) |
|
goto finished; |
|
num_rqst++; |
|
trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid, |
|
full_path); |
|
break; |
|
case SMB2_OP_POSIX_QUERY_INFO: |
|
rqst[num_rqst].rq_iov = &vars->qi_iov[0]; |
|
rqst[num_rqst].rq_nvec = 1; |
|
|
|
if (cfile) |
|
rc = SMB2_query_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
cfile->fid.persistent_fid, |
|
cfile->fid.volatile_fid, |
|
SMB_FIND_FILE_POSIX_INFO, |
|
SMB2_O_INFO_FILE, 0, |
|
/* TBD: fix following to allow for longer SIDs */ |
|
sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) + |
|
(sizeof(struct cifs_sid) * 2), 0, NULL); |
|
else { |
|
rc = SMB2_query_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
COMPOUND_FID, |
|
COMPOUND_FID, |
|
SMB_FIND_FILE_POSIX_INFO, |
|
SMB2_O_INFO_FILE, 0, |
|
sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) + |
|
(sizeof(struct cifs_sid) * 2), 0, NULL); |
|
if (!rc) { |
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
smb2_set_related(&rqst[num_rqst]); |
|
} |
|
} |
|
|
|
if (rc) |
|
goto finished; |
|
num_rqst++; |
|
trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path); |
|
break; |
|
case SMB2_OP_DELETE: |
|
trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path); |
|
break; |
|
case SMB2_OP_MKDIR: |
|
/* |
|
* Directories are created through parameters in the |
|
* SMB2_open() call. |
|
*/ |
|
trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path); |
|
break; |
|
case SMB2_OP_RMDIR: |
|
rqst[num_rqst].rq_iov = &vars->si_iov[0]; |
|
rqst[num_rqst].rq_nvec = 1; |
|
|
|
size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */ |
|
data[0] = &delete_pending[0]; |
|
|
|
rc = SMB2_set_info_init(tcon, server, |
|
&rqst[num_rqst], COMPOUND_FID, |
|
COMPOUND_FID, current->tgid, |
|
FILE_DISPOSITION_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, data, size); |
|
if (rc) |
|
goto finished; |
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
smb2_set_related(&rqst[num_rqst++]); |
|
trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path); |
|
break; |
|
case SMB2_OP_SET_EOF: |
|
rqst[num_rqst].rq_iov = &vars->si_iov[0]; |
|
rqst[num_rqst].rq_nvec = 1; |
|
|
|
size[0] = 8; /* sizeof __le64 */ |
|
data[0] = ptr; |
|
|
|
rc = SMB2_set_info_init(tcon, server, |
|
&rqst[num_rqst], COMPOUND_FID, |
|
COMPOUND_FID, current->tgid, |
|
FILE_END_OF_FILE_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, data, size); |
|
if (rc) |
|
goto finished; |
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
smb2_set_related(&rqst[num_rqst++]); |
|
trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path); |
|
break; |
|
case SMB2_OP_SET_INFO: |
|
rqst[num_rqst].rq_iov = &vars->si_iov[0]; |
|
rqst[num_rqst].rq_nvec = 1; |
|
|
|
|
|
size[0] = sizeof(FILE_BASIC_INFO); |
|
data[0] = ptr; |
|
|
|
if (cfile) |
|
rc = SMB2_set_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
cfile->fid.persistent_fid, |
|
cfile->fid.volatile_fid, current->tgid, |
|
FILE_BASIC_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, data, size); |
|
else { |
|
rc = SMB2_set_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
COMPOUND_FID, |
|
COMPOUND_FID, current->tgid, |
|
FILE_BASIC_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, data, size); |
|
if (!rc) { |
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
smb2_set_related(&rqst[num_rqst]); |
|
} |
|
} |
|
|
|
if (rc) |
|
goto finished; |
|
num_rqst++; |
|
trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid, |
|
full_path); |
|
break; |
|
case SMB2_OP_RENAME: |
|
rqst[num_rqst].rq_iov = &vars->si_iov[0]; |
|
rqst[num_rqst].rq_nvec = 2; |
|
|
|
len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX)); |
|
|
|
vars->rename_info.ReplaceIfExists = 1; |
|
vars->rename_info.RootDirectory = 0; |
|
vars->rename_info.FileNameLength = cpu_to_le32(len); |
|
|
|
size[0] = sizeof(struct smb2_file_rename_info); |
|
data[0] = &vars->rename_info; |
|
|
|
size[1] = len + 2 /* null */; |
|
data[1] = (__le16 *)ptr; |
|
|
|
if (cfile) |
|
rc = SMB2_set_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
cfile->fid.persistent_fid, |
|
cfile->fid.volatile_fid, |
|
current->tgid, FILE_RENAME_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, data, size); |
|
else { |
|
rc = SMB2_set_info_init(tcon, server, |
|
&rqst[num_rqst], |
|
COMPOUND_FID, COMPOUND_FID, |
|
current->tgid, FILE_RENAME_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, data, size); |
|
if (!rc) { |
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
smb2_set_related(&rqst[num_rqst]); |
|
} |
|
} |
|
if (rc) |
|
goto finished; |
|
num_rqst++; |
|
trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path); |
|
break; |
|
case SMB2_OP_HARDLINK: |
|
rqst[num_rqst].rq_iov = &vars->si_iov[0]; |
|
rqst[num_rqst].rq_nvec = 2; |
|
|
|
len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX)); |
|
|
|
vars->link_info.ReplaceIfExists = 0; |
|
vars->link_info.RootDirectory = 0; |
|
vars->link_info.FileNameLength = cpu_to_le32(len); |
|
|
|
size[0] = sizeof(struct smb2_file_link_info); |
|
data[0] = &vars->link_info; |
|
|
|
size[1] = len + 2 /* null */; |
|
data[1] = (__le16 *)ptr; |
|
|
|
rc = SMB2_set_info_init(tcon, server, |
|
&rqst[num_rqst], COMPOUND_FID, |
|
COMPOUND_FID, current->tgid, |
|
FILE_LINK_INFORMATION, |
|
SMB2_O_INFO_FILE, 0, data, size); |
|
if (rc) |
|
goto finished; |
|
smb2_set_next_command(tcon, &rqst[num_rqst]); |
|
smb2_set_related(&rqst[num_rqst++]); |
|
trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path); |
|
break; |
|
default: |
|
cifs_dbg(VFS, "Invalid command\n"); |
|
rc = -EINVAL; |
|
} |
|
if (rc) |
|
goto finished; |
|
|
|
/* We already have a handle so we can skip the close */ |
|
if (cfile) |
|
goto after_close; |
|
/* Close */ |
|
flags |= CIFS_CP_CREATE_CLOSE_OP; |
|
rqst[num_rqst].rq_iov = &vars->close_iov[0]; |
|
rqst[num_rqst].rq_nvec = 1; |
|
rc = SMB2_close_init(tcon, server, |
|
&rqst[num_rqst], COMPOUND_FID, |
|
COMPOUND_FID, false); |
|
smb2_set_related(&rqst[num_rqst]); |
|
if (rc) |
|
goto finished; |
|
after_close: |
|
num_rqst++; |
|
|
|
if (cfile) { |
|
cifsFileInfo_put(cfile); |
|
cfile = NULL; |
|
rc = compound_send_recv(xid, ses, server, |
|
flags, num_rqst - 2, |
|
&rqst[1], &resp_buftype[1], |
|
&rsp_iov[1]); |
|
} else |
|
rc = compound_send_recv(xid, ses, server, |
|
flags, num_rqst, |
|
rqst, resp_buftype, |
|
rsp_iov); |
|
|
|
finished: |
|
if (cfile) |
|
cifsFileInfo_put(cfile); |
|
|
|
SMB2_open_free(&rqst[0]); |
|
if (rc == -EREMCHG) { |
|
pr_warn_once("server share %s deleted\n", tcon->treeName); |
|
tcon->need_reconnect = true; |
|
} |
|
|
|
switch (command) { |
|
case SMB2_OP_QUERY_INFO: |
|
if (rc == 0) { |
|
qi_rsp = (struct smb2_query_info_rsp *) |
|
rsp_iov[1].iov_base; |
|
rc = smb2_validate_and_copy_iov( |
|
le16_to_cpu(qi_rsp->OutputBufferOffset), |
|
le32_to_cpu(qi_rsp->OutputBufferLength), |
|
&rsp_iov[1], sizeof(struct smb2_file_all_info), |
|
ptr); |
|
} |
|
if (rqst[1].rq_iov) |
|
SMB2_query_info_free(&rqst[1]); |
|
if (rqst[2].rq_iov) |
|
SMB2_close_free(&rqst[2]); |
|
if (rc) |
|
trace_smb3_query_info_compound_err(xid, ses->Suid, |
|
tcon->tid, rc); |
|
else |
|
trace_smb3_query_info_compound_done(xid, ses->Suid, |
|
tcon->tid); |
|
break; |
|
case SMB2_OP_POSIX_QUERY_INFO: |
|
if (rc == 0) { |
|
qi_rsp = (struct smb2_query_info_rsp *) |
|
rsp_iov[1].iov_base; |
|
rc = smb2_validate_and_copy_iov( |
|
le16_to_cpu(qi_rsp->OutputBufferOffset), |
|
le32_to_cpu(qi_rsp->OutputBufferLength), |
|
&rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr); |
|
} |
|
if (rqst[1].rq_iov) |
|
SMB2_query_info_free(&rqst[1]); |
|
if (rqst[2].rq_iov) |
|
SMB2_close_free(&rqst[2]); |
|
if (rc) |
|
trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc); |
|
else |
|
trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid); |
|
break; |
|
case SMB2_OP_DELETE: |
|
if (rc) |
|
trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc); |
|
else |
|
trace_smb3_delete_done(xid, ses->Suid, tcon->tid); |
|
if (rqst[1].rq_iov) |
|
SMB2_close_free(&rqst[1]); |
|
break; |
|
case SMB2_OP_MKDIR: |
|
if (rc) |
|
trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc); |
|
else |
|
trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid); |
|
if (rqst[1].rq_iov) |
|
SMB2_close_free(&rqst[1]); |
|
break; |
|
case SMB2_OP_HARDLINK: |
|
if (rc) |
|
trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc); |
|
else |
|
trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid); |
|
free_set_inf_compound(rqst); |
|
break; |
|
case SMB2_OP_RENAME: |
|
if (rc) |
|
trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc); |
|
else |
|
trace_smb3_rename_done(xid, ses->Suid, tcon->tid); |
|
free_set_inf_compound(rqst); |
|
break; |
|
case SMB2_OP_RMDIR: |
|
if (rc) |
|
trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc); |
|
else |
|
trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid); |
|
free_set_inf_compound(rqst); |
|
break; |
|
case SMB2_OP_SET_EOF: |
|
if (rc) |
|
trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc); |
|
else |
|
trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid); |
|
free_set_inf_compound(rqst); |
|
break; |
|
case SMB2_OP_SET_INFO: |
|
if (rc) |
|
trace_smb3_set_info_compound_err(xid, ses->Suid, |
|
tcon->tid, rc); |
|
else |
|
trace_smb3_set_info_compound_done(xid, ses->Suid, |
|
tcon->tid); |
|
free_set_inf_compound(rqst); |
|
break; |
|
} |
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); |
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); |
|
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); |
|
kfree(vars); |
|
return rc; |
|
} |
|
|
|
void |
|
move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src) |
|
{ |
|
memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src); |
|
dst->CurrentByteOffset = src->CurrentByteOffset; |
|
dst->Mode = src->Mode; |
|
dst->AlignmentRequirement = src->AlignmentRequirement; |
|
dst->IndexNumber1 = 0; /* we don't use it */ |
|
} |
|
|
|
int |
|
smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, |
|
struct cifs_sb_info *cifs_sb, const char *full_path, |
|
FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse) |
|
{ |
|
int rc; |
|
struct smb2_file_all_info *smb2_data; |
|
__u32 create_options = 0; |
|
struct cifsFileInfo *cfile; |
|
struct cached_fid *cfid = NULL; |
|
|
|
*adjust_tz = false; |
|
*reparse = false; |
|
|
|
smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2, |
|
GFP_KERNEL); |
|
if (smb2_data == NULL) |
|
return -ENOMEM; |
|
|
|
/* If it is a root and its handle is cached then use it */ |
|
rc = open_cached_dir(xid, tcon, full_path, cifs_sb, &cfid); |
|
if (!rc) { |
|
if (tcon->crfid.file_all_info_is_valid) { |
|
move_smb2_info_to_cifs(data, |
|
&tcon->crfid.file_all_info); |
|
} else { |
|
rc = SMB2_query_info(xid, tcon, |
|
cfid->fid->persistent_fid, |
|
cfid->fid->volatile_fid, smb2_data); |
|
if (!rc) |
|
move_smb2_info_to_cifs(data, smb2_data); |
|
} |
|
close_cached_dir(cfid); |
|
goto out; |
|
} |
|
|
|
cifs_get_readable_path(tcon, full_path, &cfile); |
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, |
|
FILE_READ_ATTRIBUTES, FILE_OPEN, create_options, |
|
ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile); |
|
if (rc == -EOPNOTSUPP) { |
|
*reparse = true; |
|
create_options |= OPEN_REPARSE_POINT; |
|
|
|
/* Failed on a symbolic link - query a reparse point info */ |
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, |
|
FILE_READ_ATTRIBUTES, FILE_OPEN, |
|
create_options, ACL_NO_MODE, |
|
smb2_data, SMB2_OP_QUERY_INFO, NULL); |
|
} |
|
if (rc) |
|
goto out; |
|
|
|
move_smb2_info_to_cifs(data, smb2_data); |
|
out: |
|
kfree(smb2_data); |
|
return rc; |
|
} |
|
|
|
|
|
int |
|
smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, |
|
struct cifs_sb_info *cifs_sb, const char *full_path, |
|
struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse) |
|
{ |
|
int rc; |
|
__u32 create_options = 0; |
|
struct cifsFileInfo *cfile; |
|
struct smb311_posix_qinfo *smb2_data; |
|
|
|
*adjust_tz = false; |
|
*reparse = false; |
|
|
|
/* BB TODO: Make struct larger when add support for parsing owner SIDs */ |
|
smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo), |
|
GFP_KERNEL); |
|
if (smb2_data == NULL) |
|
return -ENOMEM; |
|
|
|
/* |
|
* BB TODO: Add support for using the cached root handle. |
|
* Create SMB2_query_posix_info worker function to do non-compounded query |
|
* when we already have an open file handle for this. For now this is fast enough |
|
* (always using the compounded version). |
|
*/ |
|
|
|
cifs_get_readable_path(tcon, full_path, &cfile); |
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, |
|
FILE_READ_ATTRIBUTES, FILE_OPEN, create_options, |
|
ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile); |
|
if (rc == -EOPNOTSUPP) { |
|
/* BB TODO: When support for special files added to Samba re-verify this path */ |
|
*reparse = true; |
|
create_options |= OPEN_REPARSE_POINT; |
|
|
|
/* Failed on a symbolic link - query a reparse point info */ |
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, |
|
FILE_READ_ATTRIBUTES, FILE_OPEN, |
|
create_options, ACL_NO_MODE, |
|
smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL); |
|
} |
|
if (rc) |
|
goto out; |
|
|
|
/* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */ |
|
memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo)); |
|
|
|
out: |
|
kfree(smb2_data); |
|
return rc; |
|
} |
|
|
|
int |
|
smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode, |
|
struct cifs_tcon *tcon, const char *name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
return smb2_compound_op(xid, tcon, cifs_sb, name, |
|
FILE_WRITE_ATTRIBUTES, FILE_CREATE, |
|
CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR, |
|
NULL); |
|
} |
|
|
|
void |
|
smb2_mkdir_setinfo(struct inode *inode, const char *name, |
|
struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, |
|
const unsigned int xid) |
|
{ |
|
FILE_BASIC_INFO data; |
|
struct cifsInodeInfo *cifs_i; |
|
struct cifsFileInfo *cfile; |
|
u32 dosattrs; |
|
int tmprc; |
|
|
|
memset(&data, 0, sizeof(data)); |
|
cifs_i = CIFS_I(inode); |
|
dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; |
|
data.Attributes = cpu_to_le32(dosattrs); |
|
cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile); |
|
tmprc = smb2_compound_op(xid, tcon, cifs_sb, name, |
|
FILE_WRITE_ATTRIBUTES, FILE_CREATE, |
|
CREATE_NOT_FILE, ACL_NO_MODE, |
|
&data, SMB2_OP_SET_INFO, cfile); |
|
if (tmprc == 0) |
|
cifs_i->cifsAttrs = dosattrs; |
|
} |
|
|
|
int |
|
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, |
|
CREATE_NOT_FILE, ACL_NO_MODE, |
|
NULL, SMB2_OP_RMDIR, NULL); |
|
} |
|
|
|
int |
|
smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, |
|
CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, |
|
ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL); |
|
} |
|
|
|
static int |
|
smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *from_name, const char *to_name, |
|
struct cifs_sb_info *cifs_sb, __u32 access, int command, |
|
struct cifsFileInfo *cfile) |
|
{ |
|
__le16 *smb2_to_name = NULL; |
|
int rc; |
|
|
|
smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); |
|
if (smb2_to_name == NULL) { |
|
rc = -ENOMEM; |
|
goto smb2_rename_path; |
|
} |
|
rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access, |
|
FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name, |
|
command, cfile); |
|
smb2_rename_path: |
|
kfree(smb2_to_name); |
|
return rc; |
|
} |
|
|
|
int |
|
smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *from_name, const char *to_name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
struct cifsFileInfo *cfile; |
|
|
|
cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile); |
|
|
|
return smb2_set_path_attr(xid, tcon, from_name, to_name, |
|
cifs_sb, DELETE, SMB2_OP_RENAME, cfile); |
|
} |
|
|
|
int |
|
smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *from_name, const char *to_name, |
|
struct cifs_sb_info *cifs_sb) |
|
{ |
|
return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, |
|
FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK, |
|
NULL); |
|
} |
|
|
|
int |
|
smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, |
|
const char *full_path, __u64 size, |
|
struct cifs_sb_info *cifs_sb, bool set_alloc) |
|
{ |
|
__le64 eof = cpu_to_le64(size); |
|
|
|
return smb2_compound_op(xid, tcon, cifs_sb, full_path, |
|
FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE, |
|
&eof, SMB2_OP_SET_EOF, NULL); |
|
} |
|
|
|
int |
|
smb2_set_file_info(struct inode *inode, const char *full_path, |
|
FILE_BASIC_INFO *buf, const unsigned int xid) |
|
{ |
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
|
struct tcon_link *tlink; |
|
int rc; |
|
|
|
if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) && |
|
(buf->LastWriteTime == 0) && (buf->ChangeTime == 0) && |
|
(buf->Attributes == 0)) |
|
return 0; /* would be a no op, no sense sending this */ |
|
|
|
tlink = cifs_sb_tlink(cifs_sb); |
|
if (IS_ERR(tlink)) |
|
return PTR_ERR(tlink); |
|
|
|
rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path, |
|
FILE_WRITE_ATTRIBUTES, FILE_OPEN, |
|
0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL); |
|
cifs_put_tlink(tlink); |
|
return rc; |
|
}
|
|
|