components/user.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <errno.h>
   3 #include <pwd.h>
   4 #include <stdio.h>
   5 #include <string.h>
   6 #include <sys/types.h>
   7 #include <unistd.h>
   8
   9 #include "../util.h"
  10
  11 const char *
  12 gid(void)
  13 {
  14         return bprintf("%d", getgid());
  15 }
  16
  17 const char *
  18 username(void)
  19 {
  20         struct passwd *pw;
  21
  22         if (!(pw = getpwuid(geteuid()))) {
  23                 fprintf(stderr, "getpwuid '%d': %s\n", geteuid(), strerror(errno));
  24                 return NULL;
  25         }
  26
  27         return bprintf("%s", pw->pw_name);
  28 }
  29
  30 const char *
  31 uid(void)
  32 {
  33         return bprintf("%d", geteuid());
  34 }