50 lines
984 B
C
50 lines
984 B
C
/*
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* Check fault injection along with signal injection.
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*
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* Copyright (c) 2017-2018 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 <unistd.h>
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#include <sys/stat.h>
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#include <asm/unistd.h>
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static struct stat before, after;
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static void
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handler(int sig)
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{
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if (stat(".", &after))
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syscall(__NR_exit_group, 2);
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if (before.st_dev != after.st_dev || before.st_ino != after.st_ino)
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syscall(__NR_exit_group, 3);
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syscall(__NR_exit_group, 0);
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}
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int
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main(void)
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{
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const struct sigaction act = { .sa_handler = handler };
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if (sigaction(SIGUSR1, &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, SIGUSR1);
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if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
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perror_msg_and_fail("sigprocmask");
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if (stat(".", &before))
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perror_msg_and_fail("stat");
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syscall(__NR_chdir, ".");
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syscall(__NR_exit_group, 1);
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return 1;
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}
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