tests/test_syscall_setgroups32.c

   1 #include "config.h"
   2
   3 #include <stdarg.h>
   4 #include <stddef.h>
   5 #include <setjmp.h>
   6 #include <cmocka.h>
   7
   8 #include <errno.h>
   9 #include <string.h>
  10 #include <sys/types.h>
  11 #include <unistd.h>
  12
  13 #include <grp.h>
  14
  15 #ifdef HAVE_SYS_SYSCALL_H
  16 #include <sys/syscall.h>
  17 #endif
  18 #ifdef HAVE_SYSCALL_H
  19 #include <syscall.h>
  20 #endif
  21
  22 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
  23
  24 static void test_uwrap_syscall_setgroups32(void **state)
  25 {
  26         gid_t glist[] = { 100, 200, 300, 400, 500 };
  27         gid_t rlist[16];
  28         int rc = -1;
  29
  30         (void) state; /* unused */
  31
  32         rc = syscall(SYS_setgroups32, ARRAY_SIZE(glist), glist);
  33         assert_int_equal(rc, 0);
  34
  35         rc = getgroups(ARRAY_SIZE(rlist), rlist);
  36         assert_int_equal(rc, 5);
  37
  38         assert_memory_equal(glist, rlist, sizeof(glist));
  39
  40         /* Drop all supplementary groups. This is often done by daemons */
  41         memset(rlist, 0, sizeof(rlist));
  42         rc = syscall(SYS_setgroups32, 0, NULL);
  43         assert_int_equal(rc, 0);
  44
  45         rc = getgroups(ARRAY_SIZE(rlist), rlist);
  46         assert_int_equal(rc, 0);
  47
  48         assert_int_equal(rlist[0], 0);
  49 }
  50
  51 int main(void) {
  52         int rc;
  53
  54         const struct CMUnitTest uwrap_tests[] = {
  55                 cmocka_unit_test(test_uwrap_syscall_setgroups32),
  56         };
  57
  58         rc = cmocka_run_group_tests(uwrap_tests, NULL, NULL);
  59
  60         return rc;
  61 }