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glibc/grp/testgrp.c
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#include <grp.h> | |
#include <pwd.h> | |
#include <sys/types.h> | |
#include <unistd.h> | |
#include <stdlib.h> | |
#include <stdio.h> | |
int | |
main (int argc, char *argv[]) | |
{ | |
uid_t me; | |
struct passwd *my_passwd; | |
struct group *my_group = NULL; | |
char **members; | |
me = getuid (); | |
my_passwd = getpwuid (me); | |
if (my_passwd == NULL) | |
printf ("Cannot find user entry for UID %d\n", me); | |
else | |
{ | |
printf ("My login name is %s.\n", my_passwd->pw_name); | |
printf ("My uid is %d.\n", (int)(my_passwd->pw_uid)); | |
printf ("My home directory is %s.\n", my_passwd->pw_dir); | |
printf ("My default shell is %s.\n", my_passwd->pw_shell); | |
my_group = getgrgid (my_passwd->pw_gid); | |
if (my_group == NULL) | |
printf ("No data for group %d found\n", my_passwd->pw_gid); | |
else | |
{ | |
printf ("My default group is %s (%d).\n", | |
my_group->gr_name, (int)(my_passwd->pw_gid)); | |
printf ("The members of this group are:\n"); | |
for (members = my_group->gr_mem; *members != NULL; ++members) | |
printf (" %s\n", *members); | |
} | |
} | |
return my_passwd && my_group ? EXIT_SUCCESS : EXIT_FAILURE; | |
} |