Add a test for sending a signal while stepping a thread via PT_STEP.
MFC after: 1 week
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4c52a9993b
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54cfb29e3a
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=324993
@ -3377,6 +3377,92 @@ ATF_TC_BODY(ptrace__PT_ATTACH_with_SBDRY_thread, tc)
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ATF_REQUIRE(close(fd) == 0);
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}
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static void
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sigusr1_step_handler(int sig)
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{
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CHILD_REQUIRE(sig == SIGUSR1);
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raise(SIGABRT);
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}
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/*
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* Verify that PT_STEP with a signal invokes the signal before
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* stepping the next instruction (and that the next instruction is
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* stepped correctly).
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*/
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ATF_TC_WITHOUT_HEAD(ptrace__PT_STEP_with_signal);
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ATF_TC_BODY(ptrace__PT_STEP_with_signal, tc)
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{
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struct ptrace_lwpinfo pl;
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pid_t fpid, wpid;
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int status;
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ATF_REQUIRE((fpid = fork()) != -1);
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if (fpid == 0) {
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trace_me();
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signal(SIGUSR1, sigusr1_step_handler);
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raise(SIGABRT);
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exit(1);
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}
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/* The first wait() should report the stop from SIGSTOP. */
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wpid = waitpid(fpid, &status, 0);
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ATF_REQUIRE(wpid == fpid);
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ATF_REQUIRE(WIFSTOPPED(status));
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ATF_REQUIRE(WSTOPSIG(status) == SIGSTOP);
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ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);
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/* The next stop should report the SIGABRT in the child body. */
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wpid = waitpid(fpid, &status, 0);
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ATF_REQUIRE(wpid == fpid);
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ATF_REQUIRE(WIFSTOPPED(status));
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ATF_REQUIRE(WSTOPSIG(status) == SIGABRT);
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ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
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ATF_REQUIRE(pl.pl_flags & PL_FLAG_SI);
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ATF_REQUIRE(pl.pl_siginfo.si_signo == SIGABRT);
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/* Step the child process inserting SIGUSR1. */
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ATF_REQUIRE(ptrace(PT_STEP, fpid, (caddr_t)1, SIGUSR1) == 0);
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/* The next stop should report the SIGABRT in the signal handler. */
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wpid = waitpid(fpid, &status, 0);
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ATF_REQUIRE(wpid == fpid);
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ATF_REQUIRE(WIFSTOPPED(status));
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ATF_REQUIRE(WSTOPSIG(status) == SIGABRT);
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ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
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ATF_REQUIRE(pl.pl_flags & PL_FLAG_SI);
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ATF_REQUIRE(pl.pl_siginfo.si_signo == SIGABRT);
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/* Continue the child process discarding the signal. */
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ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);
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/* The next stop should report a trace trap from PT_STEP. */
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wpid = waitpid(fpid, &status, 0);
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ATF_REQUIRE(wpid == fpid);
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ATF_REQUIRE(WIFSTOPPED(status));
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ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP);
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ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
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ATF_REQUIRE(pl.pl_flags & PL_FLAG_SI);
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ATF_REQUIRE(pl.pl_siginfo.si_signo == SIGTRAP);
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ATF_REQUIRE(pl.pl_siginfo.si_code == TRAP_TRACE);
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/* Continue the child to let it exit. */
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ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0);
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/* The last event should be for the child process's exit. */
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wpid = waitpid(fpid, &status, 0);
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ATF_REQUIRE(WIFEXITED(status));
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ATF_REQUIRE(WEXITSTATUS(status) == 1);
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wpid = wait(&status);
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ATF_REQUIRE(wpid == -1);
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ATF_REQUIRE(errno == ECHILD);
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}
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ATF_TP_ADD_TCS(tp)
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{
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@ -3428,6 +3514,7 @@ ATF_TP_ADD_TCS(tp)
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ATF_TP_ADD_TC(tp, ptrace__parent_terminate_with_pending_sigstop2);
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ATF_TP_ADD_TC(tp, ptrace__event_mask_sigkill_discard);
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ATF_TP_ADD_TC(tp, ptrace__PT_ATTACH_with_SBDRY_thread);
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ATF_TP_ADD_TC(tp, ptrace__PT_STEP_with_signal);
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return (atf_no_error());
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}
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