slock

commit f405f8a3716a3dfa67b7ad86aa896fad63c1c65e
parent ba3acfc0dcf1d0603bd9d6bdee1e319339b1a509
Author: sin <sin@2f30.org>
Date:   Thu, 14 Nov 2013 11:24:08 +0000

Set errno to 0 before getpwuid() and check it afterwards

Diffstat:
M
slock.c
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/slock.c b/slock.c
@@ -65,8 +65,11 @@ getpw(void) { /* only run as root */
 	const char *rval;
 	struct passwd *pw;
 
+	errno = 0;
 	pw = getpwuid(getuid());
-	if(!pw)
+	if (errno)
+		die("slock: getpwuid: %s\n", strerror(errno));
+	else if (!pw)
 		die("slock: cannot retrieve password entry (make sure to suid or sgid slock)\n");
 	endpwent();
 	rval =  pw->pw_passwd;