1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * 07/2001 Ported by Wayne Boyer 4 * Copyright (c) 2016 Cyril Hrubis <chrubis (at) suse.cz> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 14 * the GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 /* 21 * Verify that, nice(2) fails when, a non-root user attempts to increase 22 * the priority of a process by specifying a negative increment value. 23 */ 24 #include <pwd.h> 25 #include <unistd.h> 26 #include <errno.h> 27 #include "tst_test.h" 28 29 #define NICEINC -10 30 31 static void verify_nice(void) 32 { 33 TEST(nice(NICEINC)); 34 35 if (TEST_RETURN != -1) { 36 tst_res(TFAIL, "nice(%i) succeded unexpectedly (returned %li)", 37 NICEINC, TEST_RETURN); 38 return; 39 } 40 41 if (TEST_ERRNO != EPERM) { 42 tst_res(TFAIL | TTERRNO, "nice(%i) should fail with EPERM", 43 NICEINC); 44 return; 45 } 46 47 tst_res(TPASS, "nice(%i) failed with EPERM", NICEINC); 48 } 49 50 static void setup(void) 51 { 52 struct passwd *ltpuser; 53 54 ltpuser = SAFE_GETPWNAM("nobody"); 55 SAFE_SETUID(ltpuser->pw_uid); 56 } 57 58 static struct tst_test test = { 59 .tid = "nice04", 60 .setup = setup, 61 .test_all = verify_nice, 62 .needs_root = 1, 63 }; 64
