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Diffstat (limited to 'fs/cifs/dir.c')
-rw-r--r--fs/cifs/dir.c65
1 files changed, 48 insertions, 17 deletions
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 23ec28a4c11..bb3ea06ca6f 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -137,7 +137,6 @@ cifs_new_fileinfo(struct inode *newinode, __u16 fileHandle, struct file *file,
{
struct cifsFileInfo *pCifsFile;
struct cifsInodeInfo *pCifsInode;
- struct cifs_sb_info *cifs_sb = CIFS_SB(mnt->mnt_sb);
pCifsFile = kzalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
if (pCifsFile == NULL)
@@ -191,7 +190,8 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
__u32 posix_flags = 0;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifs_fattr fattr;
- struct cifsTconInfo *tcon = cifs_sb_tcon(cifs_sb);
+ struct tcon_link *tlink;
+ struct cifsTconInfo *tcon;
cFYI(1, "posix open %s", full_path);
@@ -226,10 +226,20 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
posix_flags |= SMB_O_DIRECT;
mode &= ~current_umask();
+
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ rc = PTR_ERR(tlink);
+ goto posix_open_ret;
+ }
+
+ tcon = tlink_tcon(tlink);
rc = CIFSPOSIXCreate(xid, tcon, posix_flags, mode, pnetfid, presp_data,
poplock, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+ cifs_put_tlink(tlink);
+
if (rc)
goto posix_open_ret;
@@ -290,6 +300,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
int desiredAccess = GENERIC_READ | GENERIC_WRITE;
__u16 fileHandle;
struct cifs_sb_info *cifs_sb;
+ struct tcon_link *tlink;
struct cifsTconInfo *tcon;
char *full_path = NULL;
FILE_ALL_INFO *buf = NULL;
@@ -299,13 +310,12 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
xid = GetXid();
cifs_sb = CIFS_SB(inode->i_sb);
- tcon = cifs_sb_tcon(cifs_sb);
-
- full_path = build_path_from_dentry(direntry);
- if (full_path == NULL) {
- rc = -ENOMEM;
- goto cifs_create_out;
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ FreeXid(xid);
+ return PTR_ERR(tlink);
}
+ tcon = tlink_tcon(tlink);
if (oplockEnabled)
oplock = REQ_OPLOCK;
@@ -315,6 +325,12 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
else
oflags = FMODE_READ | SMB_O_CREAT;
+ full_path = build_path_from_dentry(direntry);
+ if (full_path == NULL) {
+ rc = -ENOMEM;
+ goto cifs_create_out;
+ }
+
if (tcon->unix_ext && (tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
@@ -481,6 +497,7 @@ cifs_create_set_dentry:
cifs_create_out:
kfree(buf);
kfree(full_path);
+ cifs_put_tlink(tlink);
FreeXid(xid);
return rc;
}
@@ -491,6 +508,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
int rc = -EPERM;
int xid;
struct cifs_sb_info *cifs_sb;
+ struct tcon_link *tlink;
struct cifsTconInfo *pTcon;
char *full_path = NULL;
struct inode *newinode = NULL;
@@ -503,10 +521,14 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
if (!old_valid_dev(device_number))
return -EINVAL;
- xid = GetXid();
-
cifs_sb = CIFS_SB(inode->i_sb);
- pTcon = cifs_sb_tcon(cifs_sb);
+ 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) {
@@ -606,6 +628,7 @@ mknod_out:
kfree(full_path);
kfree(buf);
FreeXid(xid);
+ cifs_put_tlink(tlink);
return rc;
}
@@ -619,6 +642,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
__u16 fileHandle = 0;
bool posix_open = false;
struct cifs_sb_info *cifs_sb;
+ struct tcon_link *tlink;
struct cifsTconInfo *pTcon;
struct cifsFileInfo *cfile;
struct inode *newInode = NULL;
@@ -633,7 +657,12 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
/* check whether path exists */
cifs_sb = CIFS_SB(parent_dir_inode->i_sb);
- pTcon = cifs_sb_tcon(cifs_sb);
+ tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink)) {
+ FreeXid(xid);
+ return (struct dentry *)tlink;
+ }
+ pTcon = tlink_tcon(tlink);
/*
* Don't allow the separator character in a path component.
@@ -644,8 +673,8 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
for (i = 0; i < direntry->d_name.len; i++)
if (direntry->d_name.name[i] == '\\') {
cFYI(1, "Invalid file name");
- FreeXid(xid);
- return ERR_PTR(-EINVAL);
+ rc = -EINVAL;
+ goto lookup_out;
}
}
@@ -655,7 +684,8 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
*/
if (nd && (nd->flags & LOOKUP_EXCL)) {
d_instantiate(direntry, NULL);
- return NULL;
+ rc = 0;
+ goto lookup_out;
}
/* can not grab the rename sem here since it would
@@ -663,8 +693,8 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
in which we already have the sb rename sem */
full_path = build_path_from_dentry(direntry);
if (full_path == NULL) {
- FreeXid(xid);
- return ERR_PTR(-ENOMEM);
+ rc = -ENOMEM;
+ goto lookup_out;
}
if (direntry->d_inode != NULL) {
@@ -760,6 +790,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
lookup_out:
kfree(full_path);
+ cifs_put_tlink(tlink);
FreeXid(xid);
return ERR_PTR(rc);
}