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[-V1,04/22] vfs: check for directory early

Message ID 1398615293-22931-5-git-send-email-aneesh.kumar@linux.vnet.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Aneesh Kumar K.V April 27, 2014, 4:14 p.m. UTC 
From: Andreas Gruenbacher <agruen@kernel.org>

Signed-off-by: Andreas Gruenbacher <agruen@kernel.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 fs/namei.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/fs/namei.c b/fs/namei.c
index c7fee619691f..7d93d195f0e5 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3868,6 +3868,9 @@  int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_de
 	if (!inode)
 		return -ENOENT;
 
+	if (S_ISDIR(inode->i_mode))
+		return -EPERM;
+
 	error = may_create(dir, new_dentry);
 	if (error)
 		return error;
@@ -3882,8 +3885,6 @@  int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_de
 		return -EPERM;
 	if (!dir->i_op->link)
 		return -EPERM;
-	if (S_ISDIR(inode->i_mode))
-		return -EPERM;
 
 	error = security_inode_link(old_dentry, dir, new_dentry);
 	if (error)