-#define _GNU_SOURCE
-#include <pwd.h>
-#include <stdio.h>
-#include <unistd.h>
-
-char *cuserid(char *buf)
-{
- struct passwd pw, *ppw;
- long pwb[256];
- if (getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw))
- return 0;
- snprintf(buf, L_cuserid, "%s", pw.pw_name);
- return buf;
-}