1 /* 2 * Copyright (C) 2015 Cyril Hrubis <chrubis (at) suse.cz> 3 * 4 * Based on futextest (futext_wait_uninitialized_heap.c) 5 * written by KOSAKI Motohiro <kosaki.motohiro (at) jp.fujitsu.com> 6 * 7 * Licensed under the GNU GPLv2 or later. 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 16 * the GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 /* 23 * Wait on uninitialized heap. It shold be zero and FUTEX_WAIT should return 24 * immediately. This test tests zero page handling in futex code. 25 */ 26 27 #include <errno.h> 28 29 #include "test.h" 30 #include "safe_macros.h" 31 #include "futextest.h" 32 33 const char *TCID="futex_wait04"; 34 const int TST_TOTAL=1; 35 static struct timespec to = {.tv_sec = 0, .tv_nsec = 10000}; 36 37 static void verify_futex_wait(void) 38 { 39 int res; 40 void *buf; 41 size_t pagesize = getpagesize(); 42 buf = SAFE_MMAP(NULL, NULL, pagesize, PROT_READ|PROT_WRITE, 43 MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 44 45 res = futex_wait(buf, 1, &to, 0); 46 47 if (res == -1 && errno == EWOULDBLOCK) 48 tst_resm(TPASS | TERRNO, "futex_wait() returned %i", res); 49 else 50 tst_resm(TFAIL | TERRNO, "futex_wait() returned %i", res); 51 52 SAFE_MUNMAP(NULL, buf, pagesize); 53 } 54 55 int main(int argc, char *argv[]) 56 { 57 int lc; 58 59 tst_parse_opts(argc, argv, NULL, NULL); 60 61 for (lc = 0; TEST_LOOPING(lc); lc++) 62 verify_futex_wait(); 63 64 tst_exit(); 65 } 66
