Add a test for user signal delivery.
This test verifies we get the correct ptrace event details when a signal is posted to a traced process from userland. Reviewed by: kib (part of D7044)
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3340c45b96
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=302900
@ -1355,6 +1355,67 @@ ATF_TC_BODY(ptrace__lwp_events_exec, tc)
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ATF_REQUIRE(errno == ECHILD);
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}
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static void
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handler(int sig __unused)
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{
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}
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static void
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signal_main(void)
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{
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signal(SIGINFO, handler);
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raise(SIGINFO);
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exit(0);
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}
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/*
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* Verify that the expected ptrace event is reported for a signal.
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*/
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ATF_TC_WITHOUT_HEAD(ptrace__siginfo);
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ATF_TC_BODY(ptrace__siginfo, 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_main();
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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 event should be for the SIGINFO. */
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wpid = waitpid(fpid, &status, 0);
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ATF_REQUIRE(WIFSTOPPED(status));
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ATF_REQUIRE(WSTOPSIG(status) == SIGINFO);
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ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1);
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ATF_REQUIRE(pl.pl_event == PL_EVENT_SIGNAL);
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ATF_REQUIRE(pl.pl_flags & PL_FLAG_SI);
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ATF_REQUIRE(pl.pl_siginfo.si_code == SI_LWP);
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ATF_REQUIRE(pl.pl_siginfo.si_pid == wpid);
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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) == 0);
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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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@ -1376,6 +1437,7 @@ ATF_TP_ADD_TCS(tp)
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ATF_TP_ADD_TC(tp, ptrace__new_child_pl_syscall_code_thread);
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ATF_TP_ADD_TC(tp, ptrace__lwp_events);
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ATF_TP_ADD_TC(tp, ptrace__lwp_events_exec);
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ATF_TP_ADD_TC(tp, ptrace__siginfo);
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return (atf_no_error());
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}
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