diff options
| -rw-r--r-- | lib/mount_util.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/mount_util.c b/lib/mount_util.c index 5b660d6..aafddfb 100644 --- a/lib/mount_util.c +++ b/lib/mount_util.c @@ -100,8 +100,10 @@ static int add_mount(const char *progname, const char *fsname, * --no-canonicalize */ int fd = open("/dev/null", O_WRONLY); - dup2(fd, 1); - dup2(fd, 2); + if (fd >= 0) { + dup2(fd, 1); + dup2(fd, 2); + } sigprocmask(SIG_SETMASK, &oldmask, NULL); setuid(geteuid()); |