[CIFS] Make cifs_unlink consistent in checks for null inode
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index f36b4e4..9c869a6 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -962,13 +962,21 @@
goto out_close;
}
+
+/*
+ * If dentry->d_inode is null (usually meaning the cached dentry
+ * is a negative dentry) then we would attempt a standard SMB delete, but
+ * if that fails we can not attempt the fall back mechanisms on EACESS
+ * but will return the EACESS to the caller. Note that the VFS does not call
+ * unlink on negative dentries currently.
+ */
int cifs_unlink(struct inode *dir, struct dentry *dentry)
{
int rc = 0;
int xid;
char *full_path = NULL;
struct inode *inode = dentry->d_inode;
- struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+ 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;
@@ -1012,7 +1020,7 @@
rc = cifs_rename_pending_delete(full_path, dentry, xid);
if (rc == 0)
drop_nlink(inode);
- } else if (rc == -EACCES && dosattr == 0) {
+ } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
if (attrs == NULL) {
rc = -ENOMEM;
@@ -1020,7 +1028,8 @@
}
/* try to reset dos attributes */
- origattr = cifsInode->cifsAttrs;
+ cifs_inode = CIFS_I(inode);
+ origattr = cifs_inode->cifsAttrs;
if (origattr == 0)
origattr |= ATTR_NORMAL;
dosattr = origattr & ~ATTR_READONLY;
@@ -1041,13 +1050,13 @@
out_reval:
if (inode) {
- cifsInode = CIFS_I(inode);
- cifsInode->time = 0; /* will force revalidate to get info
+ cifs_inode = CIFS_I(inode);
+ cifs_inode->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);
+ cifs_inode = CIFS_I(dir);
CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
kfree(full_path);