62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/*
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* Check decoding of ERESTARTSYS error code.
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*
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* Copyright (c) 2016-2018 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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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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