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-rw-r--r--fs/cifs/inode.c90
1 files changed, 41 insertions, 49 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 9c548f110102..511c52616794 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -665,40 +665,34 @@ struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
return inode;
}
-int cifs_unlink(struct inode *inode, struct dentry *direntry)
+int cifs_unlink(struct inode *dir, struct dentry *dentry)
{
int rc = 0;
int xid;
- struct cifs_sb_info *cifs_sb;
- struct cifsTconInfo *pTcon;
char *full_path = NULL;
+ struct inode *inode = dentry->d_inode;
struct cifsInodeInfo *cifsInode;
+ struct super_block *sb = dir->i_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifsTconInfo *tcon = cifs_sb->tcon;
FILE_BASIC_INFO *pinfo_buf;
- cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
+ cFYI(1, ("cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry));
xid = GetXid();
- if (inode)
- cifs_sb = CIFS_SB(inode->i_sb);
- else
- cifs_sb = CIFS_SB(direntry->d_sb);
- pTcon = cifs_sb->tcon;
-
- /* Unlink can be called from rename so we can not grab the sem here
- since we deadlock otherwise */
-/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
- full_path = build_path_from_dentry(direntry);
-/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
+ /* Unlink can be called from rename so we can not take the
+ * sb->s_vfs_rename_mutex here */
+ full_path = build_path_from_dentry(dentry);
if (full_path == NULL) {
FreeXid(xid);
return -ENOMEM;
}
- if ((pTcon->ses->capabilities & CAP_UNIX) &&
+ if ((tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
- le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
- rc = CIFSPOSIXDelFile(xid, pTcon, full_path,
+ le64_to_cpu(tcon->fsUnixInfo.Capability))) {
+ rc = CIFSPOSIXDelFile(xid, tcon, full_path,
SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
cFYI(1, ("posix del rc %d", rc));
@@ -706,31 +700,31 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
goto psx_del_no_retry;
}
- rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
+ rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
psx_del_no_retry:
if (!rc) {
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ if (inode)
+ drop_nlink(inode);
} else if (rc == -ENOENT) {
- d_drop(direntry);
+ d_drop(dentry);
} else if (rc == -ETXTBSY) {
int oplock = 0;
__u16 netfid;
- rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
+ rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, DELETE,
CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
&netfid, &oplock, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc == 0) {
- CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
+ CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ CIFSSMBClose(xid, tcon, netfid);
+ if (inode)
+ drop_nlink(inode);
}
} else if (rc == -EACCES) {
/* try only if r/o attribute set in local lookup data? */
@@ -738,8 +732,8 @@ psx_del_no_retry:
if (pinfo_buf) {
/* ATTRS set to normal clears r/o bit */
pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
- if (!(pTcon->ses->flags & CIFS_SES_NT4))
- rc = CIFSSMBSetPathInfo(xid, pTcon, full_path,
+ if (!(tcon->ses->flags & CIFS_SES_NT4))
+ rc = CIFSSMBSetPathInfo(xid, tcon, full_path,
pinfo_buf,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
@@ -750,7 +744,7 @@ psx_del_no_retry:
if (rc == -EOPNOTSUPP) {
int oplock = 0;
__u16 netfid;
- /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
+ /* rc = CIFSSMBSetAttrLegacy(xid, tcon,
full_path,
(__u16)ATTR_NORMAL,
cifs_sb->local_nls);
@@ -761,7 +755,7 @@ psx_del_no_retry:
/* BB could scan to see if we already have it open
and pass in pid of opener to function */
- rc = CIFSSMBOpen(xid, pTcon, full_path,
+ rc = CIFSSMBOpen(xid, tcon, full_path,
FILE_OPEN, SYNCHRONIZE |
FILE_WRITE_ATTRIBUTES, 0,
&netfid, &oplock, NULL,
@@ -769,28 +763,28 @@ psx_del_no_retry:
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc == 0) {
- rc = CIFSSMBSetFileInfo(xid, pTcon,
+ rc = CIFSSMBSetFileInfo(xid, tcon,
pinfo_buf,
netfid,
current->tgid);
- CIFSSMBClose(xid, pTcon, netfid);
+ CIFSSMBClose(xid, tcon, netfid);
}
}
kfree(pinfo_buf);
}
if (rc == 0) {
- rc = CIFSSMBDelFile(xid, pTcon, full_path,
+ rc = CIFSSMBDelFile(xid, tcon, full_path,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (!rc) {
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ if (inode)
+ drop_nlink(inode);
} else if (rc == -ETXTBSY) {
int oplock = 0;
__u16 netfid;
- rc = CIFSSMBOpen(xid, pTcon, full_path,
+ rc = CIFSSMBOpen(xid, tcon, full_path,
FILE_OPEN, DELETE,
CREATE_NOT_DIR |
CREATE_DELETE_ON_CLOSE,
@@ -799,30 +793,28 @@ psx_del_no_retry:
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc == 0) {
- CIFSSMBRenameOpenFile(xid, pTcon,
+ CIFSSMBRenameOpenFile(xid, tcon,
netfid, NULL,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- CIFSSMBClose(xid, pTcon, netfid);
- if (direntry->d_inode)
- drop_nlink(direntry->d_inode);
+ CIFSSMBClose(xid, tcon, netfid);
+ if (inode)
+ drop_nlink(inode);
}
/* BB if rc = -ETXTBUSY goto the rename logic BB */
}
}
}
- if (direntry->d_inode) {
- cifsInode = CIFS_I(direntry->d_inode);
- cifsInode->time = 0; /* will force revalidate to get info
- when needed */
- direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
- }
if (inode) {
- inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
cifsInode = CIFS_I(inode);
- cifsInode->time = 0; /* force revalidate of dir as well */
+ cifsInode->time = 0; /* will force revalidate to get info
+ when needed */
+ inode->i_ctime = current_fs_time(sb);
}
+ dir->i_ctime = dir->i_mtime = current_fs_time(sb);
+ cifsInode = CIFS_I(dir);
+ cifsInode->time = 0; /* force revalidate of dir as well */
kfree(full_path);
FreeXid(xid);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.