From: Laszlo Papp <ext-laszlo.papp@nokia.com>
Date: Wed, 9 Mar 2011 15:22:07 +0000 (+0200)
Subject: Check the negative return value after an open syscall
X-Git-Tag: fuse_2_9_0~68
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b0ceaa067057cf91caa180636d2e4c3dc786a98f;p=qemu-gpiodev%2Flibfuse.git

Check the negative return value after an open syscall
---

diff --git a/lib/mount.c b/lib/mount.c
index 224ae9d..8065087 100644
--- a/lib/mount.c
+++ b/lib/mount.c
@@ -366,8 +366,10 @@ static int fuse_mount_fusermount(const char *mountpoint, const char *opts,
 
 		if (quiet) {
 			int fd = open("/dev/null", O_RDONLY);
-			dup2(fd, 1);
-			dup2(fd, 2);
+			if (fd != -1) {
+				dup2(fd, 1);
+				dup2(fd, 2);
+			}
 		}
 
 		argv[a++] = FUSERMOUNT_PROG;