From 3fed284f931a60d58d7896c6e1d9d2d0b22da6c1 Mon Sep 17 00:00:00 2001
From: Zach Brown <zab@redhat.com>
Date: Fri, 11 Oct 2013 09:21:46 -0700
Subject: btrfs-progs: check fopen failure in cmds-send

Check for fopen() failure.  This shows up in static analysis as a
possible null pointer derference.

Signed-off-by: Zach Brown <zab@redhat.com>
Laughed-at-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---
 cmds-send.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'cmds-send.c')

diff --git a/cmds-send.c b/cmds-send.c
index 374d0403..81b3e496 100644
--- a/cmds-send.c
+++ b/cmds-send.c
@@ -72,6 +72,9 @@ int find_mount_root(const char *path, char **mount_root)
 	close(fd);
 
 	mnttab = fopen("/proc/mounts", "r");
+	if (!mnttab)
+		return -errno;
+
 	while ((ent = getmntent(mnttab))) {
 		len = strlen(ent->mnt_dir);
 		if (strncmp(ent->mnt_dir, path, len) == 0) {
-- 
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