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Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c41
1 files changed, 18 insertions, 23 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 2826db35dc25..0b3138de2a3b 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -721,31 +721,22 @@ static int follow_automount(struct path *path, unsigned flags,
if (!path->dentry->d_op || !path->dentry->d_op->d_automount)
return -EREMOTE;
- /* We don't want to mount if someone supplied AT_NO_AUTOMOUNT
- * and this is the terminal part of the path.
+ /* We don't want to mount if someone's just doing a stat -
+ * unless they're stat'ing a directory and appended a '/' to
+ * the name.
+ *
+ * We do, however, want to mount if someone wants to open or
+ * create a file of any type under the mountpoint, wants to
+ * traverse through the mountpoint or wants to open the
+ * mounted directory. Also, autofs may mark negative dentries
+ * as being automount points. These will need the attentions
+ * of the daemon to instantiate them before they can be used.
*/
- if ((flags & LOOKUP_NO_AUTOMOUNT) && !(flags & LOOKUP_PARENT))
- return -EISDIR; /* we actually want to stop here */
+ if (!(flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY |
+ LOOKUP_OPEN | LOOKUP_CREATE | LOOKUP_AUTOMOUNT)) &&
+ path->dentry->d_inode)
+ return -EISDIR;
- /*
- * We don't want to mount if someone's just doing a stat and they've
- * set AT_SYMLINK_NOFOLLOW - unless they're stat'ing a directory and
- * appended a '/' to the name.
- */
- if (!(flags & LOOKUP_FOLLOW)) {
- /* We do, however, want to mount if someone wants to open or
- * create a file of any type under the mountpoint, wants to
- * traverse through the mountpoint or wants to open the mounted
- * directory.
- * Also, autofs may mark negative dentries as being automount
- * points. These will need the attentions of the daemon to
- * instantiate them before they can be used.
- */
- if (!(flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY |
- LOOKUP_OPEN | LOOKUP_CREATE)) &&
- path->dentry->d_inode)
- return -EISDIR;
- }
current->total_link_count++;
if (current->total_link_count >= 40)
return -ELOOP;
@@ -2619,6 +2610,7 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
if (!dir->i_op->rmdir)
return -EPERM;
+ dget(dentry);
mutex_lock(&dentry->d_inode->i_mutex);
error = -EBUSY;
@@ -2639,6 +2631,7 @@ int vfs_rmdir(struct inode *dir, struct dentry *dentry)
out:
mutex_unlock(&dentry->d_inode->i_mutex);
+ dput(dentry);
if (!error)
d_delete(dentry);
return error;
@@ -3028,6 +3021,7 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
if (error)
return error;
+ dget(new_dentry);
if (target)
mutex_lock(&target->i_mutex);
@@ -3048,6 +3042,7 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
out:
if (target)
mutex_unlock(&target->i_mutex);
+ dput(new_dentry);
if (!error)
if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
d_move(old_dentry,new_dentry);