[XFS] Check for invalid flags in xfs_attrlist_by_handle.

[linux-2.6-omap-h63xx.git] / fs / xfs / linux-2.6 / xfs_ioctl.c

diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index a42ba9d71156f84101e1068a33d4bd05e055bcd9..993f5720200ac98bb38830a998a71e1e85d1e535 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -84,17 +84,15 @@ xfs_find_handle(
        switch (cmd) {
        case XFS_IOC_PATH_TO_FSHANDLE:
        case XFS_IOC_PATH_TO_HANDLE: {
-               struct nameidata        nd;
-               int                     error;
-
-               error = user_path_walk_link((const char __user *)hreq.path, &nd);
+               struct path path;
+               int error = user_lpath((const char __user *)hreq.path, &path);
                if (error)
                        return error;
 
-               ASSERT(nd.path.dentry);
-               ASSERT(nd.path.dentry->d_inode);
-               inode = igrab(nd.path.dentry->d_inode);
-               path_put(&nd.path);
+               ASSERT(path.dentry);
+               ASSERT(path.dentry->d_inode);
+               inode = igrab(path.dentry->d_inode);
+               path_put(&path);
                break;
        }
 
@@ -470,6 +468,12 @@ xfs_attrlist_by_handle(
        if (al_hreq.buflen > XATTR_LIST_MAX)
                return -XFS_ERROR(EINVAL);
 
+       /*
+        * Reject flags, only allow namespaces.
+        */
+       if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
+               return -XFS_ERROR(EINVAL);
+
        error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, &inode);
        if (error)
                goto out;