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73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
/*-
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* Copyright (c) 2023 Dmitry Chagin <dchagin@FreeBSD.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/wait.h>
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#include <execinfo.h>
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <atf-c.h>
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#define BT_FUNCTIONS 10
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void handler(int);
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__noinline void
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handler(int signum __unused)
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{
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void *addresses[BT_FUNCTIONS];
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char **symbols;
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size_t n, i, match;
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n = backtrace(addresses, nitems(addresses));
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ATF_REQUIRE(n > 1);
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symbols = backtrace_symbols(addresses, n);
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ATF_REQUIRE(symbols != NULL);
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match = -1;
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for (i = 0; i < n; i++) {
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printf("%zu: %p, %s\n", i, addresses[i], symbols[i]);
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if (strstr(symbols[i], "<main+") != NULL)
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match = i;
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}
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ATF_REQUIRE(match > 0);
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printf("match at %zu, symbols %zu\n", match, n);
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}
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ATF_TC_WITHOUT_HEAD(test_backtrace_sigtramp);
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ATF_TC_BODY(test_backtrace_sigtramp, tc)
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{
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struct sigaction act;
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pid_t child;
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int status;
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memset(&act, 0, sizeof(act));
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act.sa_handler = handler;
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sigemptyset(&act.sa_mask);
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sigaction(SIGUSR1, &act, NULL);
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child = fork();
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ATF_REQUIRE(child != -1);
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if (child == 0) {
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kill(getppid(), SIGUSR1);
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_exit(0);
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} else
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wait(&status);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, test_backtrace_sigtramp);
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return (atf_no_error());
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}
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