1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) International Business Machines Corp., 2001 4f08c3bdfSopenharmony_ci * Ported by Wayne Boyer 5f08c3bdfSopenharmony_ci */ 6f08c3bdfSopenharmony_ci 7f08c3bdfSopenharmony_ci/*\ 8f08c3bdfSopenharmony_ci * [Description] 9f08c3bdfSopenharmony_ci * 10f08c3bdfSopenharmony_ci * Test if setgid() system call sets errno to EPERM correctly. 11f08c3bdfSopenharmony_ci * 12f08c3bdfSopenharmony_ci * [Algorithm] 13f08c3bdfSopenharmony_ci * 14f08c3bdfSopenharmony_ci * Call setgid() to set the gid to that of root. Run this test as 15f08c3bdfSopenharmony_ci * nobody, and expect to get EPERM. 16f08c3bdfSopenharmony_ci */ 17f08c3bdfSopenharmony_ci 18f08c3bdfSopenharmony_ci#include <pwd.h> 19f08c3bdfSopenharmony_ci#include "tst_test.h" 20f08c3bdfSopenharmony_ci#include "compat_tst_16.h" 21f08c3bdfSopenharmony_ci 22f08c3bdfSopenharmony_cistatic void run(void) 23f08c3bdfSopenharmony_ci{ 24f08c3bdfSopenharmony_ci struct passwd *rootpwent; 25f08c3bdfSopenharmony_ci 26f08c3bdfSopenharmony_ci rootpwent = SAFE_GETPWNAM("root"); 27f08c3bdfSopenharmony_ci 28f08c3bdfSopenharmony_ci GID16_CHECK(rootpwent->pw_gid, setgid); 29f08c3bdfSopenharmony_ci 30f08c3bdfSopenharmony_ci TST_EXP_FAIL(SETGID(rootpwent->pw_gid), EPERM); 31f08c3bdfSopenharmony_ci} 32f08c3bdfSopenharmony_ci 33f08c3bdfSopenharmony_cistatic void setup(void) 34f08c3bdfSopenharmony_ci{ 35f08c3bdfSopenharmony_ci struct passwd *nobody = SAFE_GETPWNAM("nobody"); 36f08c3bdfSopenharmony_ci 37f08c3bdfSopenharmony_ci SAFE_SETGID(nobody->pw_gid); 38f08c3bdfSopenharmony_ci SAFE_SETUID(nobody->pw_uid); 39f08c3bdfSopenharmony_ci} 40f08c3bdfSopenharmony_ci 41f08c3bdfSopenharmony_cistatic struct tst_test test = { 42f08c3bdfSopenharmony_ci .needs_root = 1, 43f08c3bdfSopenharmony_ci .setup = setup, 44f08c3bdfSopenharmony_ci .test_all = run, 45f08c3bdfSopenharmony_ci}; 46