aboutsummaryrefslogtreecommitdiff
path: root/fs/cifs/inode.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/cifs/inode.c')
-rw-r--r--fs/cifs/inode.c239
1 files changed, 186 insertions, 53 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 93f77d438d3..94979309698 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -52,7 +52,7 @@ static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral)
/* check if server can support readpages */
- if (cifs_sb->tcon->ses->server->maxBuf <
+ if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf <
PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
else
@@ -288,8 +288,8 @@ int cifs_get_file_info_unix(struct file *filp)
struct cifs_fattr fattr;
struct inode *inode = filp->f_path.dentry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *tcon = cifs_sb->tcon;
struct cifsFileInfo *cfile = filp->private_data;
+ struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink);
xid = GetXid();
rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data);
@@ -313,15 +313,21 @@ int cifs_get_inode_info_unix(struct inode **pinode,
FILE_UNIX_BASIC_INFO find_data;
struct cifs_fattr fattr;
struct cifsTconInfo *tcon;
+ struct tcon_link *tlink;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
- tcon = cifs_sb->tcon;
cFYI(1, "Getting info on %s", full_path);
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
+
/* could have done a find first instead but this returns more info */
rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+ cifs_put_tlink(tlink);
if (!rc) {
cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
@@ -332,6 +338,13 @@ int cifs_get_inode_info_unix(struct inode **pinode,
return rc;
}
+ /* check for Minshall+French symlinks */
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
+ int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
+ if (tmprc)
+ cFYI(1, "CIFSCheckMFSymlink: %d", tmprc);
+ }
+
if (*pinode == NULL) {
/* get new inode */
cifs_fill_uniqueid(sb, &fattr);
@@ -353,7 +366,8 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
int rc;
int oplock = 0;
__u16 netfid;
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct tcon_link *tlink;
+ struct cifsTconInfo *tcon;
char buf[24];
unsigned int bytes_read;
char *pbuf;
@@ -372,7 +386,12 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
return -EINVAL; /* EOPNOTSUPP? */
}
- rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
+
+ rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ,
CREATE_NOT_DIR, &netfid, &oplock, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
@@ -380,7 +399,7 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
if (rc == 0) {
int buf_type = CIFS_NO_BUFFER;
/* Read header */
- rc = CIFSSMBRead(xid, pTcon, netfid,
+ rc = CIFSSMBRead(xid, tcon, netfid,
24 /* length */, 0 /* offset */,
&bytes_read, &pbuf, &buf_type);
if ((rc == 0) && (bytes_read >= 8)) {
@@ -422,8 +441,9 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
fattr->cf_dtype = DT_REG;
rc = -EOPNOTSUPP; /* or some unknown SFU type */
}
- CIFSSMBClose(xid, pTcon, netfid);
+ CIFSSMBClose(xid, tcon, netfid);
}
+ cifs_put_tlink(tlink);
return rc;
}
@@ -441,11 +461,19 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
ssize_t rc;
char ea_value[4];
__u32 mode;
+ struct tcon_link *tlink;
+ struct cifsTconInfo *tcon;
- rc = CIFSSMBQAllEAs(xid, cifs_sb->tcon, path, "SETFILEBITS",
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
+
+ rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS",
ea_value, 4 /* size of buf */, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+ cifs_put_tlink(tlink);
if (rc < 0)
return (int)rc;
else if (rc > 3) {
@@ -468,6 +496,8 @@ static void
cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
struct cifs_sb_info *cifs_sb, bool adjust_tz)
{
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+
memset(fattr, 0, sizeof(*fattr));
fattr->cf_cifsattrs = le32_to_cpu(info->Attributes);
if (info->DeletePending)
@@ -482,8 +512,8 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
if (adjust_tz) {
- fattr->cf_ctime.tv_sec += cifs_sb->tcon->ses->server->timeAdj;
- fattr->cf_mtime.tv_sec += cifs_sb->tcon->ses->server->timeAdj;
+ fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj;
+ fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj;
}
fattr->cf_eof = le64_to_cpu(info->EndOfFile);
@@ -515,8 +545,8 @@ int cifs_get_file_info(struct file *filp)
struct cifs_fattr fattr;
struct inode *inode = filp->f_path.dentry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *tcon = cifs_sb->tcon;
struct cifsFileInfo *cfile = filp->private_data;
+ struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink);
xid = GetXid();
rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data);
@@ -554,26 +584,33 @@ int cifs_get_inode_info(struct inode **pinode,
{
int rc = 0, tmprc;
struct cifsTconInfo *pTcon;
+ struct tcon_link *tlink;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
char *buf = NULL;
bool adjustTZ = false;
struct cifs_fattr fattr;
- pTcon = cifs_sb->tcon;
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ pTcon = tlink_tcon(tlink);
+
cFYI(1, "Getting info on %s", full_path);
if ((pfindData == NULL) && (*pinode != NULL)) {
if (CIFS_I(*pinode)->clientCanCacheRead) {
cFYI(1, "No need to revalidate cached inode sizes");
- return rc;
+ goto cgii_exit;
}
}
/* if file info not passed in then get it from server */
if (pfindData == NULL) {
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
- if (buf == NULL)
- return -ENOMEM;
+ if (buf == NULL) {
+ rc = -ENOMEM;
+ goto cgii_exit;
+ }
pfindData = (FILE_ALL_INFO *)buf;
/* could do find first instead but this returns more info */
@@ -661,6 +698,13 @@ int cifs_get_inode_info(struct inode **pinode,
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
cifs_sfu_mode(&fattr, full_path, cifs_sb, xid);
+ /* check for Minshall+French symlinks */
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
+ tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
+ if (tmprc)
+ cFYI(1, "CIFSCheckMFSymlink: %d", tmprc);
+ }
+
if (!*pinode) {
*pinode = cifs_iget(sb, &fattr);
if (!*pinode)
@@ -671,6 +715,7 @@ int cifs_get_inode_info(struct inode **pinode,
cgii_exit:
kfree(buf);
+ cifs_put_tlink(tlink);
return rc;
}
@@ -683,6 +728,7 @@ char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
int pplen = cifs_sb->prepathlen;
int dfsplen;
char *full_path = NULL;
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
/* if no prefix path, simply set path to the root of share to "" */
if (pplen == 0) {
@@ -692,8 +738,8 @@ char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
return full_path;
}
- if (cifs_sb->tcon && (cifs_sb->tcon->Flags & SMB_SHARE_IS_IN_DFS))
- dfsplen = strnlen(cifs_sb->tcon->treeName, MAX_TREE_SIZE + 1);
+ if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
+ dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
else
dfsplen = 0;
@@ -702,7 +748,7 @@ char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
return full_path;
if (dfsplen) {
- strncpy(full_path, cifs_sb->tcon->treeName, dfsplen);
+ strncpy(full_path, tcon->treeName, dfsplen);
/* switch slash direction in prepath depending on whether
* windows or posix style path names
*/
@@ -801,6 +847,8 @@ retry_iget5_locked:
inode->i_flags |= S_NOATIME | S_NOCMTIME;
if (inode->i_state & I_NEW) {
inode->i_ino = hash;
+ if (S_ISREG(inode->i_mode))
+ inode->i_data.backing_dev_info = sb->s_bdi;
#ifdef CONFIG_CIFS_FSCACHE
/* initialize per-inode cache cookie pointer */
CIFS_I(inode)->fscache = NULL;
@@ -816,18 +864,18 @@ retry_iget5_locked:
struct inode *cifs_root_iget(struct super_block *sb, unsigned long ino)
{
int xid;
- struct cifs_sb_info *cifs_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct inode *inode = NULL;
long rc;
char *full_path;
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
- cifs_sb = CIFS_SB(sb);
full_path = cifs_build_path_to_root(cifs_sb);
if (full_path == NULL)
return ERR_PTR(-ENOMEM);
xid = GetXid();
- if (cifs_sb->tcon->unix_ext)
+ if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
@@ -838,10 +886,10 @@ struct inode *cifs_root_iget(struct super_block *sb, unsigned long ino)
#ifdef CONFIG_CIFS_FSCACHE
/* populate tcon->resource_id */
- cifs_sb->tcon->resource_id = CIFS_I(inode)->uniqueid;
+ tcon->resource_id = CIFS_I(inode)->uniqueid;
#endif
- if (rc && cifs_sb->tcon->ipc) {
+ if (rc && tcon->ipc) {
cFYI(1, "ipc connection - fake read inode");
inode->i_mode |= S_IFDIR;
inode->i_nlink = 2;
@@ -877,7 +925,8 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid,
struct cifsFileInfo *open_file;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct tcon_link *tlink = NULL;
+ struct cifsTconInfo *pTcon;
FILE_BASIC_INFO info_buf;
if (attrs == NULL)
@@ -916,13 +965,22 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid,
/*
* If the file is already open for write, just use that fileid
*/
- open_file = find_writable_file(cifsInode);
+ open_file = find_writable_file(cifsInode, true);
if (open_file) {
netfid = open_file->netfid;
netpid = open_file->pid;
+ pTcon = tlink_tcon(open_file->tlink);
goto set_via_filehandle;
}
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ rc = PTR_ERR(tlink);
+ tlink = NULL;
+ goto out;
+ }
+ pTcon = tlink_tcon(tlink);
+
/*
* NT4 apparently returns success on this call, but it doesn't
* really work.
@@ -966,6 +1024,8 @@ set_via_filehandle:
else
cifsFileInfo_put(open_file);
out:
+ if (tlink != NULL)
+ cifs_put_tlink(tlink);
return rc;
}
@@ -983,10 +1043,16 @@ cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid)
struct inode *inode = dentry->d_inode;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct tcon_link *tlink;
+ struct cifsTconInfo *tcon;
__u32 dosattr, origattr;
FILE_BASIC_INFO *info_buf = NULL;
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
+
rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
&netfid, &oplock, NULL, cifs_sb->local_nls,
@@ -1055,6 +1121,7 @@ out_close:
CIFSSMBClose(xid, tcon, netfid);
out:
kfree(info_buf);
+ cifs_put_tlink(tlink);
return rc;
/*
@@ -1094,12 +1161,18 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry)
struct cifsInodeInfo *cifs_inode;
struct super_block *sb = dir->i_sb;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
- struct cifsTconInfo *tcon = cifs_sb->tcon;
+ struct tcon_link *tlink;
+ struct cifsTconInfo *tcon;
struct iattr *attrs = NULL;
__u32 dosattr = 0, origattr = 0;
cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry);
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
+
xid = GetXid();
/* Unlink can be called from rename so we can not take the
@@ -1107,8 +1180,7 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry)
full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
rc = -ENOMEM;
- FreeXid(xid);
- return rc;
+ goto unlink_out;
}
if ((tcon->ses->capabilities & CAP_UNIX) &&
@@ -1174,10 +1246,11 @@ out_reval:
dir->i_ctime = dir->i_mtime = current_fs_time(sb);
cifs_inode = CIFS_I(dir);
CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
-
+unlink_out:
kfree(full_path);
kfree(attrs);
FreeXid(xid);
+ cifs_put_tlink(tlink);
return rc;
}
@@ -1186,6 +1259,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
int rc = 0, tmprc;
int xid;
struct cifs_sb_info *cifs_sb;
+ struct tcon_link *tlink;
struct cifsTconInfo *pTcon;
char *full_path = NULL;
struct inode *newinode = NULL;
@@ -1193,16 +1267,18 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
cFYI(1, "In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode);
- xid = GetXid();
-
cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb->tcon;
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ pTcon = tlink_tcon(tlink);
+
+ xid = GetXid();
full_path = build_path_from_dentry(direntry);
if (full_path == NULL) {
rc = -ENOMEM;
- FreeXid(xid);
- return rc;
+ goto mkdir_out;
}
if ((pTcon->ses->capabilities & CAP_UNIX) &&
@@ -1360,6 +1436,7 @@ mkdir_get_info:
mkdir_out:
kfree(full_path);
FreeXid(xid);
+ cifs_put_tlink(tlink);
return rc;
}
@@ -1368,6 +1445,7 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
int rc = 0;
int xid;
struct cifs_sb_info *cifs_sb;
+ struct tcon_link *tlink;
struct cifsTconInfo *pTcon;
char *full_path = NULL;
struct cifsInodeInfo *cifsInode;
@@ -1376,18 +1454,23 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
xid = GetXid();
- cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb->tcon;
-
full_path = build_path_from_dentry(direntry);
if (full_path == NULL) {
rc = -ENOMEM;
- FreeXid(xid);
- return rc;
+ goto rmdir_exit;
}
+ cifs_sb = CIFS_SB(inode->i_sb);
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ rc = PTR_ERR(tlink);
+ goto rmdir_exit;
+ }
+ pTcon = tlink_tcon(tlink);
+
rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ cifs_put_tlink(tlink);
if (!rc) {
drop_nlink(inode);
@@ -1408,6 +1491,7 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
current_fs_time(inode->i_sb);
+rmdir_exit:
kfree(full_path);
FreeXid(xid);
return rc;
@@ -1418,10 +1502,16 @@ cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
struct dentry *to_dentry, const char *toPath)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct tcon_link *tlink;
+ struct cifsTconInfo *pTcon;
__u16 srcfid;
int oplock, rc;
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ pTcon = tlink_tcon(tlink);
+
/* try path-based rename first */
rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
@@ -1433,11 +1523,11 @@ cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
* rename by filehandle to various Windows servers.
*/
if (rc == 0 || rc != -ETXTBSY)
- return rc;
+ goto do_rename_exit;
/* open-file renames don't work across directories */
if (to_dentry->d_parent != from_dentry->d_parent)
- return rc;
+ goto do_rename_exit;
/* open the file to be renamed -- we need DELETE perms */
rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE,
@@ -1453,7 +1543,8 @@ cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
CIFSSMBClose(xid, pTcon, srcfid);
}
-
+do_rename_exit:
+ cifs_put_tlink(tlink);
return rc;
}
@@ -1463,13 +1554,17 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
char *fromName = NULL;
char *toName = NULL;
struct cifs_sb_info *cifs_sb;
+ struct tcon_link *tlink;
struct cifsTconInfo *tcon;
FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
FILE_UNIX_BASIC_INFO *info_buf_target;
int xid, rc, tmprc;
cifs_sb = CIFS_SB(source_dir->i_sb);
- tcon = cifs_sb->tcon;
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ tcon = tlink_tcon(tlink);
xid = GetXid();
@@ -1545,6 +1640,7 @@ cifs_rename_exit:
kfree(fromName);
kfree(toName);
FreeXid(xid);
+ cifs_put_tlink(tlink);
return rc;
}
@@ -1597,11 +1693,12 @@ int cifs_revalidate_file(struct file *filp)
{
int rc = 0;
struct inode *inode = filp->f_path.dentry->d_inode;
+ struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
if (!cifs_inode_needs_reval(inode))
goto check_inval;
- if (CIFS_SB(inode->i_sb)->tcon->unix_ext)
+ if (tlink_tcon(cfile->tlink)->unix_ext)
rc = cifs_get_file_info_unix(filp);
else
rc = cifs_get_file_info(filp);
@@ -1642,7 +1739,7 @@ int cifs_revalidate_dentry(struct dentry *dentry)
"jiffies %ld", full_path, inode, inode->i_count.counter,
dentry, dentry->d_time, jiffies);
- if (CIFS_SB(sb)->tcon->unix_ext)
+ if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
@@ -1658,13 +1755,29 @@ check_inval:
}
int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
- struct kstat *stat)
+ struct kstat *stat)
{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
int err = cifs_revalidate_dentry(dentry);
+
if (!err) {
generic_fillattr(dentry->d_inode, stat);
stat->blksize = CIFS_MAX_MSGSIZE;
stat->ino = CIFS_I(dentry->d_inode)->uniqueid;
+
+ /*
+ * If on a multiuser mount without unix extensions, and the
+ * admin hasn't overridden them, set the ownership to the
+ * fsuid/fsgid of the current process.
+ */
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
+ !tcon->unix_ext) {
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
+ stat->uid = current_fsuid();
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
+ stat->gid = current_fsgid();
+ }
}
return err;
}
@@ -1706,7 +1819,8 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
struct cifsFileInfo *open_file;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct tcon_link *tlink = NULL;
+ struct cifsTconInfo *pTcon = NULL;
/*
* To avoid spurious oplock breaks from server, in the case of
@@ -1717,10 +1831,11 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
* writebehind data than the SMB timeout for the SetPathInfo
* request would allow
*/
- open_file = find_writable_file(cifsInode);
+ open_file = find_writable_file(cifsInode, true);
if (open_file) {
__u16 nfid = open_file->netfid;
__u32 npid = open_file->pid;
+ pTcon = tlink_tcon(open_file->tlink);
rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid,
npid, false);
cifsFileInfo_put(open_file);
@@ -1735,6 +1850,13 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
rc = -EINVAL;
if (rc != 0) {
+ if (pTcon == NULL) {
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+ pTcon = tlink_tcon(tlink);
+ }
+
/* Set file size by pathname rather than by handle
either because no valid, writeable file handle for
it was found or because there was an error setting
@@ -1764,6 +1886,8 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
CIFSSMBClose(xid, pTcon, netfid);
}
}
+ if (tlink)
+ cifs_put_tlink(tlink);
}
if (rc == 0) {
@@ -1784,7 +1908,8 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
struct inode *inode = direntry->d_inode;
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct tcon_link *tlink;
+ struct cifsTconInfo *pTcon;
struct cifs_unix_set_info_args *args = NULL;
struct cifsFileInfo *open_file;
@@ -1871,17 +1996,25 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
args->ctime = NO_CHANGE_64;
args->device = 0;
- open_file = find_writable_file(cifsInode);
+ open_file = find_writable_file(cifsInode, true);
if (open_file) {
u16 nfid = open_file->netfid;
u32 npid = open_file->pid;
+ pTcon = tlink_tcon(open_file->tlink);
rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
cifsFileInfo_put(open_file);
} else {
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ rc = PTR_ERR(tlink);
+ goto out;
+ }
+ pTcon = tlink_tcon(tlink);
rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+ cifs_put_tlink(tlink);
}
if (rc)
@@ -2062,7 +2195,7 @@ cifs_setattr(struct dentry *direntry, struct iattr *attrs)
{
struct inode *inode = direntry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *pTcon = cifs_sb->tcon;
+ struct cifsTconInfo *pTcon = cifs_sb_master_tcon(cifs_sb);
if (pTcon->unix_ext)
return cifs_setattr_unix(direntry, attrs);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 17:08:22 +0000