1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2014 Fujitsu Ltd. 4 * Author: Zeng Linggang <[email protected]> 5 * Copyright (c) 2022 SUSE LLC Avinesh Kumar <[email protected]> 6 */ 7 8 /*\ 9 * [Description] 10 * 11 * Verify that setegid() fails with EPERM when the calling process is not 12 * privileged and egid does not match the current real group ID, 13 * current effective group ID, or current saved set-group-ID. 14 */ 15 16 #include <pwd.h> 17 #include "tst_test.h" 18 19 static struct passwd *ltpuser; 20 setup(void)21static void setup(void) 22 { 23 ltpuser = SAFE_GETPWNAM("nobody"); 24 SAFE_SETEUID(ltpuser->pw_uid); 25 } 26 setegid_verify(void)27static void setegid_verify(void) 28 { 29 TST_EXP_FAIL(setegid(ltpuser->pw_gid), 30 EPERM, 31 "setegid(%d)", 32 ltpuser->pw_gid); 33 } 34 35 static struct tst_test test = { 36 .setup = setup, 37 .test_all = setegid_verify, 38 .needs_root = 1 39 }; 40