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 any user can successfully increase the nice value of 22 * the process by passing an increment value (< max. applicable limits) to 23 * nice() system call. 24 */ 25 #include <unistd.h> 26 #include <stdlib.h> 27 #include <errno.h> 28 #include <sys/resource.h> 29 #include "tst_test.h" 30 31 #define NICEINC 2 32 33 static void nice_test(void) 34 { 35 int new_nice; 36 int orig_nice; 37 38 orig_nice = SAFE_GETPRIORITY(PRIO_PROCESS, 0); 39 40 TEST(nice(NICEINC)); 41 42 if (TST_RET == -1) { 43 tst_res(TFAIL | TTERRNO, "nice(%d) returned -1", NICEINC); 44 return; 45 } 46 47 if (TST_ERR) { 48 tst_res(TFAIL | TTERRNO, "nice(%d) failed", NICEINC); 49 return; 50 } 51 52 new_nice = SAFE_GETPRIORITY(PRIO_PROCESS, 0); 53 54 if (new_nice != (orig_nice + NICEINC)) { 55 tst_res(TFAIL, "Process priority %i, expected %i", 56 new_nice, orig_nice + NICEINC); 57 return; 58 } 59 60 tst_res(TPASS, "nice(%d) passed", NICEINC); 61 62 exit(0); 63 } 64 65 static void verify_nice(void) 66 { 67 if (!SAFE_FORK()) 68 nice_test(); 69 70 tst_reap_children(); 71 } 72 73 static struct tst_test test = { 74 .forks_child = 1, 75 .test_all = verify_nice, 76 }; 77
