From: Ronald Zachariah <rozachar@cisco.com>
Date: Thu, 28 Apr 2016 05:08:34 +0000 (+0200)
Subject: fs: ext4: fix symlink read function
X-Git-Tag: v2016.05~41
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=37f23885e4905ff500a8524328aa3084ac11cdb4;p=platform%2Fkernel%2Fu-boot.git

fs: ext4: fix symlink read function

The function ext4fs_read_symlink was unable to handle a symlink
which had target name of exactly 60 characters.

Signed-off-by: Ronald Zachariah <rozachar@cisco.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Cc: Tom Rini <trini@konsulko.com>
---

diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index 84fba76..40b798a 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -2040,7 +2040,7 @@ static char *ext4fs_read_symlink(struct ext2fs_node *node)
 	if (!symlink)
 		return 0;
 
-	if (__le32_to_cpu(diro->inode.size) <= 60) {
+	if (__le32_to_cpu(diro->inode.size) < sizeof(diro->inode.b.symlink)) {
 		strncpy(symlink, diro->inode.b.symlink,
 			 __le32_to_cpu(diro->inode.size));
 	} else {