testsuite/nsswitch/getgrgid.c

   1 /*
   2  * Lookup a group by gid.
   3  */
   4
   5 #include <stdio.h>
   6 #include <grp.h>
   7 #include <sys/types.h>
   8
   9 int main(int argc, char **argv)
  10 {
  11     struct group *gr;
  12     gid_t gid;
  13
  14     /* Check args */
  15
  16     if (argc != 2) {
  17         printf("ERROR: no arg specified\n");
  18         exit(1);
  19     }
  20
  21     if ((gid = atoi(argv[1])) == 0) {
  22         printf("ERROR: invalid gid specified\n");
  23         exit(1);
  24     }
  25
  26     /* Do getgrgid() */
  27
  28     if ((gr = getgrgid(gid)) == NULL) {
  29         printf("FAIL: gid %d does not exist\n", gid);
  30         exit(1);
  31     }
  32
  33     /* Print group info */
  34
  35     printf("PASS: gid %d exists\n", gid);
  36     printf("gr_name = %s\n", gr->gr_name);
  37     printf("gr_passwd = %s\n", gr->gr_passwd);
  38     printf("gr_gid = %d\n", gr->gr_gid);
  39
  40     /* Group membership */
  41
  42     if (gr->gr_mem != NULL) {
  43         int i = 0;
  44
  45         printf("gr_mem = ");
  46         while(gr->gr_mem[i] != NULL) {
  47             printf("%s", gr->gr_mem[i]);
  48             i++;
  49             if (gr->gr_mem != NULL) {
  50                 printf(",");
  51             }
  52         }
  53         printf("\n");
  54     }
  55
  56     exit(0);
  57 }