Dmitry V. Levin
fa8c286d50
* strace.c (init): Allow -p option along with a command. (startup_child): In -D mode, record the parent of the tracer process as strace_child. (startup_attach): Save trace_tracer_pid before -D mode fork. When tracing a command in -f mode, do not check for the command's threads as it has no threads at this moment. Never attach to the tracer process. In -D mode, never attach to the parent of the tracer process, terminate that process only once at the end of startup_attach, and reset strace_child. * strace.1: Document that -p option can be used along with tracing of a command. * NEWS: Mention it. * tests/attach-p-cmd-cmd.c: New file. * tests/attach-p-cmd-p.c: Likewise. * tests/attach-p-cmd.test: New test. * tests/.gitignore: Add attach-p-cmd-cmd and attach-p-cmd-p. * tests/Makefile.am (check_PROGRAMS): Likewise. (TESTS): Add attach-p-cmd.test. This fixes Debian bug #549942.
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*
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* This file is part of attach-p-cmd strace test.
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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 <assert.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sys/time.h>
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#include <unistd.h>
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static void
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handler(int signo)
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{
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_exit(!chdir("attach-p-cmd.test -p"));
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}
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int
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main(int ac, char **av)
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{
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if (ac < 2)
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error_msg_and_fail("missing operand");
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if (ac > 2)
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error_msg_and_fail("extra operand");
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const sigset_t set = {};
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const struct sigaction act = { .sa_handler = handler };
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const struct itimerval itv = { .it_value.tv_sec = atoi(av[1]) };
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assert(sigaction(SIGALRM, &act, NULL) == 0);
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assert(sigprocmask(SIG_SETMASK, &set, NULL) == 0);
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if (setitimer(ITIMER_REAL, &itv, NULL))
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perror_msg_and_skip("setitimer");
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for (;;);
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return 0;
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}
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