1 /* 2 * Copyright (c) 2015-2016 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 #include "tests.h" 29 #include <assert.h> 30 #include <stdio.h> 31 #include <stdint.h> 32 #include <signal.h> 33 #include <time.h> 34 #include <sys/time.h> 35 36 int 37 main(void) 38 { 39 #if defined __x86_64__ && defined __ILP32__ 40 /* 41 * x32 is broken from the beginning: 42 * https://lkml.org/lkml/2015/11/30/790 43 */ 44 error_msg_and_skip("x32 is broken"); 45 #else 46 const sigset_t set = {}; 47 const struct sigaction act = { .sa_handler = SIG_IGN }; 48 const struct itimerval itv = { .it_value.tv_usec = 111111 }; 49 struct timespec req = { .tv_nsec = 222222222 }, rem; 50 51 assert(sigaction(SIGALRM, &act, NULL) == 0); 52 assert(sigprocmask(SIG_SETMASK, &set, NULL) == 0); 53 if (setitimer(ITIMER_REAL, &itv, NULL)) 54 perror_msg_and_skip("setitimer"); 55 if (nanosleep(&req, &rem)) 56 perror_msg_and_fail("nanosleep"); 57 58 printf("nanosleep\\(\\{tv_sec=%jd, tv_nsec=%jd\\}, " 59 "\\{tv_sec=%jd, tv_nsec=%jd\\}\\)" 60 " = \\? ERESTART_RESTARTBLOCK \\(Interrupted by signal\\)\n", 61 (intmax_t) req.tv_sec, (intmax_t) req.tv_nsec, 62 (intmax_t) rem.tv_sec, (intmax_t) rem.tv_nsec); 63 puts("--- SIGALRM \\{si_signo=SIGALRM, si_code=SI_KERNEL\\} ---"); 64 #ifdef __arm__ 65 /* old kernels used to overwrite ARM_r0 with -EINTR */ 66 # define ALTERNATIVE_NANOSLEEP_REQ "0xfffffffc|" 67 #else 68 # define ALTERNATIVE_NANOSLEEP_REQ "" 69 #endif 70 printf("(nanosleep\\((%s\\{tv_sec=%jd, tv_nsec=%jd\\}), " 71 "%p|restart_syscall\\(<\\.\\.\\." 72 " resuming interrupted nanosleep \\.\\.\\.>)\\) = 0\n", 73 ALTERNATIVE_NANOSLEEP_REQ, 74 (intmax_t) req.tv_sec, (intmax_t) req.tv_nsec, &rem); 75 76 puts("\\+\\+\\+ exited with 0 \\+\\+\\+"); 77 return 0; 78 #endif 79 } 80
