1 /* 2 * Copyright (c) 2017 FUJITSU LIMITED. All rights reserved. 3 * Author: Xiao Yang <yangx.jy (at) cn.fujitsu.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 */ 15 16 /* 17 * Test for EFAULT when rlim points outside the accessible address space. 18 */ 19 20 #define _GNU_SOURCE 21 #include <errno.h> 22 #include <sys/resource.h> 23 #include <sys/time.h> 24 #include <sys/wait.h> 25 #include <stdlib.h> 26 27 #include "tst_test.h" 28 29 static void verify_setrlimit(void) 30 { 31 int status; 32 pid_t pid; 33 34 pid = SAFE_FORK(); 35 if (!pid) { 36 TEST(setrlimit(RLIMIT_NOFILE, (void *) -1)); 37 if (TEST_RETURN != -1) { 38 tst_res(TFAIL, "setrlimit() succeeded unexpectedly"); 39 exit(0); 40 } 41 42 /* Usually, setrlimit() should return EFAULT */ 43 if (TEST_ERRNO == EFAULT) { 44 tst_res(TPASS | TTERRNO, 45 "setrlimit() failed as expected"); 46 } else { 47 tst_res(TFAIL | TTERRNO, 48 "setrlimit() should fail with EFAULT, got"); 49 } 50 51 exit(0); 52 } 53 54 SAFE_WAITPID(pid, &status, 0); 55 56 /* If glibc has to convert between 32bit and 64bit struct rlimit 57 * in some cases, it is possible to get SegFault. 58 */ 59 if (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) { 60 tst_res(TPASS, "setrlimit() caused SIGSEGV"); 61 return; 62 } 63 64 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) 65 return; 66 67 tst_res(TBROK, "child %s", tst_strstatus(status)); 68 } 69 70 static struct tst_test test = { 71 .test_all = verify_setrlimit, 72 .forks_child = 1, 73 }; 74
