slock

simple X display locker utility
git clone git://git.suckless.org/slock
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commit 6a5512835485ac501d983161ca15b311a95c5649
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:
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;