From a5bfffac645a7b2d8119f8bbae34df5c94832799 Mon Sep 17 00:00:00 2001
From: Timo Savola <tsavola@movial.fi>
Date: Sun, 8 Apr 2007 16:04:00 -0700
Subject: [PATCH] fuse: validate rootmode mount option

If rootmode isn't valid, we hit the BUG() in fuse_init_inode.  Now
EINVAL is returned.

Signed-off-by: Timo Savola <tsavola@movial.fi>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/fuse/inode.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'fs/fuse/inode.c')

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 5ab8e50e780..608db81219a 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -330,6 +330,8 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d, int is_bdev)
 		case OPT_ROOTMODE:
 			if (match_octal(&args[0], &value))
 				return 0;
+			if (!fuse_valid_type(value))
+				return 0;
 			d->rootmode = value;
 			d->rootmode_present = 1;
 			break;
-- 
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