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Date: Tue, 9 Jun 2015 14:59:22 +0200
From: Julien Ramseier <j.ramseier@...il.com>
To: musl@...ts.openwall.com
Subject: getgrgid and errno
Hello,
I’m encountering a strange problem with getgrgid.
Calling this function with a non-existent group sets errno to ENOENT instead of 0.
This small test program below prints getgrgid: No such file or directory.
#include <sys/types.h>
#include <grp.h>
#include <stddef.h>
#include <errno.h>
int main(void) {
errno = 0;
struct group *g = getgrgid(1234);
perror("getgrgid");
}
However, when stepping through __getgr_a with gdb, errno seems to be correctly set to 0:
167 if (rv) errno = rv;
(gdb)
168 return rv;
(gdb) p rv
$6 = 0
So I really don’t know what’s going on…Am I missing something?
-
Julien
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