1  /*
       2   * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@strace.io>
       3   * Copyright (c) 2015-2023 The strace developers.
       4   * All rights reserved.
       5   *
       6   * SPDX-License-Identifier: GPL-2.0-or-later
       7   */
       8  
       9  #include "tests.h"
      10  #include <stdio.h>
      11  #include <stdint.h>
      12  #include <signal.h>
      13  #include <time.h>
      14  #include <sys/time.h>
      15  
      16  #define NANOSLEEP_NAME_RE "(nanosleep|clock_nanosleep(_time64)?)"
      17  #define NANOSLEEP_CALL_RE "(nanosleep\\(|clock_nanosleep(_time64)?\\(CLOCK_REALTIME, 0, )"
      18  
      19  int
      20  main(void)
      21  {
      22  #if defined __x86_64__ && defined __ILP32__
      23  	/*
      24  	 * x32 is broken from the beginning:
      25  	 * https://lkml.org/lkml/2015/11/30/790
      26  	 */
      27  	error_msg_and_skip("x32 is broken");
      28  #else
      29  	const sigset_t set = {};
      30  	const struct sigaction act = { .sa_handler = SIG_IGN };
      31  	const struct itimerval itv = { .it_interval.tv_usec = 22222,
      32  				       .it_value.tv_usec = 11111 };
      33  	const struct timespec req = { .tv_nsec = 222222222 };
      34  	struct timespec rem = { 0xdefaced, 0xdefaced };
      35  
      36  	if (sigaction(SIGALRM, &act, NULL))
      37  		perror_msg_and_fail("sigaction");
      38  	if (sigprocmask(SIG_SETMASK, &set, NULL))
      39  		perror_msg_and_fail("sigprocmask");
      40  	if (setitimer(ITIMER_REAL, &itv, NULL))
      41  		perror_msg_and_skip("setitimer");
      42  	if (nanosleep(&req, &rem))
      43  		perror_msg_and_fail("nanosleep");
      44  
      45  	printf("%s\\{tv_sec=0, tv_nsec=[0-9]+\\}"
      46  	       ", \\{tv_sec=[0-9]+, tv_nsec=[0-9]+\\}\\)"
      47  	       " = \\? ERESTART_RESTARTBLOCK \\(Interrupted by signal\\)\n",
      48  	       NANOSLEEP_CALL_RE);
      49  	puts("--- SIGALRM \\{si_signo=SIGALRM, si_code=SI_KERNEL\\} ---");
      50  # ifdef __arm__
      51  /* old kernels used to overwrite ARM_r0 with -EINTR */
      52  #  define ALTERNATIVE_NANOSLEEP_REQ "0xfffffffc|"
      53  # else
      54  #  define ALTERNATIVE_NANOSLEEP_REQ ""
      55  # endif
      56  	printf("(%s(%s\\{tv_sec=0, tv_nsec=[0-9]+\\})"
      57  	       ", 0x[[:xdigit:]]+|restart_syscall\\(<\\.\\.\\."
      58  	       " resuming interrupted %s \\.\\.\\.>)\\) = 0\n",
      59  	       NANOSLEEP_CALL_RE,
      60  	       ALTERNATIVE_NANOSLEEP_REQ,
      61  	       NANOSLEEP_NAME_RE);
      62  
      63  	puts("!restart_syscall\\(<\\.\\.\\."
      64  	     " resuming interrupted restart_syscall \\.\\.\\.>\\) = .*");
      65  
      66  	puts("\\+\\+\\+ exited with 0 \\+\\+\\+");
      67  	return 0;
      68  #endif
      69  }