[dev] [slock] [patch] Set errno to 0 before getpwuid() and check it afterwards

[sin]

Hi,

Just a small fix.

bye,
sin

>From cf540c7f316619c728e921082abf5887de15ab93 Mon Sep 17 00:00:00 2001
From: sin <s...@2f30.org>
Date: Thu, 14 Nov 2013 11:24:08 +0000
Subject: [PATCH 1/2] Set errno to 0 before getpwuid() and check it afterwards

---
 slock.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/slock.c b/slock.c
index 467937c..506231e 100644
--- 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;
-- 
1.8.4.2