1 /* 2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2015-2017 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "tests.h" 30 #include <assert.h> 31 #include <stdio.h> 32 #include <stdint.h> 33 #include <signal.h> 34 #include <time.h> 35 #include <sys/time.h> 36 37 int 38 main(void) 39 { 40 #if defined __x86_64__ && defined __ILP32__ 41 /* 42 * x32 is broken from the beginning: 43 * https://lkml.org/lkml/2015/11/30/790 44 */ 45 error_msg_and_skip("x32 is broken"); 46 #else 47 const sigset_t set = {}; 48 const struct sigaction act = { .sa_handler = SIG_IGN }; 49 const struct itimerval itv = { .it_value.tv_usec = 111111 }; 50 struct timespec req = { .tv_nsec = 222222222 }, rem; 51 52 assert(sigaction(SIGALRM, &act, NULL) == 0); 53 assert(sigprocmask(SIG_SETMASK, &set, NULL) == 0); 54 if (setitimer(ITIMER_REAL, &itv, NULL)) 55 perror_msg_and_skip("setitimer"); 56 if (nanosleep(&req, &rem)) 57 perror_msg_and_fail("nanosleep"); 58 59 printf("nanosleep\\(\\{tv_sec=%lld, tv_nsec=%llu\\}" 60 ", \\{tv_sec=%lld, tv_nsec=%llu\\}\\)" 61 " = \\? ERESTART_RESTARTBLOCK \\(Interrupted by signal\\)\n", 62 (long long) req.tv_sec, zero_extend_signed_to_ull(req.tv_nsec), 63 (long long) rem.tv_sec, zero_extend_signed_to_ull(rem.tv_nsec)); 64 puts("--- SIGALRM \\{si_signo=SIGALRM, si_code=SI_KERNEL\\} ---"); 65 #ifdef __arm__ 66 /* old kernels used to overwrite ARM_r0 with -EINTR */ 67 # define ALTERNATIVE_NANOSLEEP_REQ "0xfffffffc|" 68 #else 69 # define ALTERNATIVE_NANOSLEEP_REQ "" 70 #endif 71 printf("(nanosleep\\((%s\\{tv_sec=%lld, tv_nsec=%llu\\})" 72 ", %p|restart_syscall\\(<\\.\\.\\." 73 " resuming interrupted nanosleep \\.\\.\\.>)\\) = 0\n", 74 ALTERNATIVE_NANOSLEEP_REQ, 75 (long long) req.tv_sec, zero_extend_signed_to_ull(req.tv_nsec), 76 &rem); 77 78 puts("\\+\\+\\+ exited with 0 \\+\\+\\+"); 79 return 0; 80 #endif 81 } 82
