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82 lines
2.6 KiB
82 lines
2.6 KiB
4 months ago
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/*
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* Check decoding of ERESTARTSYS error code.
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*
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <signal.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <unistd.h>
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static int sv[2];
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static void
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handler(int sig)
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{
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close(sv[1]);
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sv[1] = -1;
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}
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int
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main(void)
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{
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if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
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perror_msg_and_skip("socketpair");
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const struct sigaction act = {
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.sa_handler = handler,
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.sa_flags = SA_RESTART
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};
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if (sigaction(SIGALRM, &act, NULL))
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perror_msg_and_fail("sigaction");
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sigset_t mask;
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sigemptyset(&mask);
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sigaddset(&mask, SIGALRM);
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if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
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perror_msg_and_fail("sigprocmask");
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const struct itimerval itv = { .it_value.tv_usec = 123456 };
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if (setitimer(ITIMER_REAL, &itv, NULL))
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perror_msg_and_fail("setitimer");
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if (recvfrom(sv[0], &sv[1], sizeof(sv[1]), 0, NULL, NULL))
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perror_msg_and_fail("recvfrom");
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printf("recvfrom(%d, %p, %d, 0, NULL, NULL) = ? ERESTARTSYS"
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" (To be restarted if SA_RESTART is set)\n",
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sv[0], &sv[1], (int) sizeof(sv[1]));
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printf("recvfrom(%d, \"\", %d, 0, NULL, NULL) = 0\n",
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sv[0], (int) sizeof(sv[1]));
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puts("+++ exited with 0 +++");
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return 0;
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}
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