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VFS: AF_UNIX sockets should call mknod on the top layer only

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AF_UNIX sockets should call mknod on the top layer only and should not attempt
to modify the lower layer in a layered filesystem such as overlayfs.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells 2015-03-06 14:05:26 +00:00 committed by Al Viro
parent aa4d86163e
commit ee8ac4d61c
1 changed files with 1 additions and 1 deletions
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2
net/unix/af_unix.c
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@ -839,7 +839,7 @@ static int unix_mknod(const char *sun_path, umode_t mode, struct path *res)
*/
err = security_path_mknod(&path, dentry, mode, 0);
if (!err) {
err = vfs_mknod(path.dentry->d_inode, dentry, mode, 0);
err = vfs_mknod(d_inode(path.dentry), dentry, mode, 0);
if (!err) {
res->mnt = mntget(path.mnt);
res->dentry = dget(dentry);