1 /* 2 * Copyright (c) 2015 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifdef HAVE_CONFIG_H 29 # include "config.h" 30 #endif 31 32 #include <stdio.h> 33 #include <stdint.h> 34 #include <time.h> 35 #include <fcntl.h> 36 #include <unistd.h> 37 #include <sys/syscall.h> 38 39 #if defined __NR_timerfd_create \ 40 && defined __NR_timerfd_gettime \ 41 && defined __NR_timerfd_settime \ 42 && defined O_CLOEXEC 43 44 int 45 main(void) 46 { 47 (void) close(0); 48 if (syscall(__NR_timerfd_create, CLOCK_MONOTONIC, O_CLOEXEC | O_NONBLOCK)) 49 return 77; 50 puts("timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC|TFD_NONBLOCK) = 0"); 51 52 struct { 53 struct itimerspec its; 54 uint32_t pad[4]; 55 } old = { 56 .pad = { 0xdeadbeef, 0xbadc0ded, 0xdeadbeef, 0xbadc0ded } 57 }, new = { 58 .its = { 59 .it_interval = { 0xdeface1, 0xdeface2 }, 60 .it_value = { 0xdeface3, 0xdeface4 } 61 }, 62 .pad = { 0xdeadbeef, 0xbadc0ded, 0xdeadbeef, 0xbadc0ded } 63 }; 64 65 if (syscall(__NR_timerfd_settime, 0, 0, &new.its, &old.its)) 66 return 77; 67 printf("timerfd_settime(0, 0" 68 ", {it_interval={%jd, %jd}, it_value={%jd, %jd}}" 69 ", {it_interval={%jd, %jd}, it_value={%jd, %jd}}" 70 ") = 0\n", 71 (intmax_t) new.its.it_interval.tv_sec, 72 (intmax_t) new.its.it_interval.tv_nsec, 73 (intmax_t) new.its.it_value.tv_sec, 74 (intmax_t) new.its.it_value.tv_nsec, 75 (intmax_t) old.its.it_interval.tv_sec, 76 (intmax_t) old.its.it_interval.tv_nsec, 77 (intmax_t) old.its.it_value.tv_sec, 78 (intmax_t) old.its.it_value.tv_nsec); 79 80 if (syscall(__NR_timerfd_gettime, 0, &old.its)) 81 return 77; 82 printf("timerfd_gettime(0" 83 ", {it_interval={%jd, %jd}, it_value={%jd, %jd}}" 84 ") = 0\n", 85 (intmax_t) old.its.it_interval.tv_sec, 86 (intmax_t) old.its.it_interval.tv_nsec, 87 (intmax_t) old.its.it_value.tv_sec, 88 (intmax_t) old.its.it_value.tv_nsec); 89 90 puts("+++ exited with 0 +++"); 91 return 0; 92 } 93 94 #else 95 96 int 97 main(void) 98 { 99 return 77; 100 } 101 102 #endif 103
