Module Name: src Committed By: kamil Date: Fri Jan 27 16:06:23 UTC 2017
Modified Files: src/tests/kernel: t_ptrace_wait.c Log Message: Add new test signal8 in t_ptrace_wait{,3,4,6,id,pid} signal8: Verify that masking SIGTRAP in tracee does not stop tracer from catching PTRACE_VFORK_DONE breakpoint This test is marked as broken and linked with PR kern/51918. Sponsored by <The NetBSD Foundation> To generate a diff of this commit: cvs rdiff -u -r1.66 -r1.67 src/tests/kernel/t_ptrace_wait.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/tests/kernel/t_ptrace_wait.c diff -u src/tests/kernel/t_ptrace_wait.c:1.66 src/tests/kernel/t_ptrace_wait.c:1.67 --- src/tests/kernel/t_ptrace_wait.c:1.66 Fri Jan 27 00:34:52 2017 +++ src/tests/kernel/t_ptrace_wait.c Fri Jan 27 16:06:23 2017 @@ -1,4 +1,4 @@ -/* $NetBSD: t_ptrace_wait.c,v 1.66 2017/01/27 00:34:52 kamil Exp $ */ +/* $NetBSD: t_ptrace_wait.c,v 1.67 2017/01/27 16:06:23 kamil Exp $ */ /*- * Copyright (c) 2016 The NetBSD Foundation, Inc. @@ -27,7 +27,7 @@ */ #include <sys/cdefs.h> -__RCSID("$NetBSD: t_ptrace_wait.c,v 1.66 2017/01/27 00:34:52 kamil Exp $"); +__RCSID("$NetBSD: t_ptrace_wait.c,v 1.67 2017/01/27 16:06:23 kamil Exp $"); #include <sys/param.h> #include <sys/types.h> @@ -1753,7 +1753,8 @@ ATF_TC_BODY(vforkdone1, tc) validate_status_stopped(status, sigval); - printf("Enable PTRACE_VFORK in EVENT_MASK for the child %d\n", child); + printf("Enable PTRACE_VFORK_DONE in EVENT_MASK for the child %d\n", + child); event.pe_set_event = PTRACE_VFORK_DONE; ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1); @@ -6270,6 +6271,111 @@ ATF_TC_BODY(signal7, tc) } #endif +ATF_TC(signal8); +ATF_TC_HEAD(signal8, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Verify that masking SIGTRAP in tracee does not stop tracer from " + "catching PTRACE_VFORK_DONE breakpoint"); +} + +ATF_TC_BODY(signal8, tc) +{ + const int exitval = 5; + const int exitval2 = 15; + const int sigval = SIGSTOP; + const int sigmasked = SIGTRAP; + pid_t child, child2, wpid; +#if defined(TWAIT_HAVE_STATUS) + int status; +#endif + sigset_t intmask; + ptrace_state_t state; + const int slen = sizeof(state); + ptrace_event_t event; + const int elen = sizeof(event); + + atf_tc_expect_fail("PR kern/51918"); + + printf("Before forking process PID=%d\n", getpid()); + ATF_REQUIRE((child = fork()) != -1); + if (child == 0) { + printf("Before calling PT_TRACE_ME from child %d\n", getpid()); + FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); + + sigemptyset(&intmask); + sigaddset(&intmask, sigmasked); + sigprocmask(SIG_BLOCK, &intmask, NULL); + + printf("Before raising %s from child\n", strsignal(sigval)); + FORKEE_ASSERT(raise(sigval) == 0); + + FORKEE_ASSERT((child2 = vfork()) != 1); + + if (child2 == 0) + _exit(exitval2); + + FORKEE_REQUIRE_SUCCESS + (wpid = TWAIT_GENERIC(child2, &status, 0), child2); + + forkee_status_exited(status, exitval2); + + printf("Before exiting of the child process\n"); + _exit(exitval); + } + printf("Parent process PID=%d, child's PID=%d\n", getpid(), child); + + printf("Before calling %s() for the child\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, sigval); + + printf("Enable PTRACE_VFORK_DONE in EVENT_MASK for the child %d\n", + child); + event.pe_set_event = PTRACE_VFORK_DONE; + ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, sigmasked); + + ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); + printf("report_event=%d\n", state.pe_report_event); + ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK_DONE); + + child2 = state.pe_other_pid; + printf("Reported PTRACE_VFORK_DONE event with forkee %d\n", child2); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child - expected stopped " + "SIGCHLD\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, SIGCHLD); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child - expected exited\n", + TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_exited(status, exitval); + + printf("Before calling %s() for the child - expected no process\n", + TWAIT_FNAME); + TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); +} + ATF_TP_ADD_TCS(tp) { setvbuf(stdout, NULL, _IONBF, 0); @@ -6379,6 +6485,7 @@ ATF_TP_ADD_TCS(tp) ATF_TP_ADD_TC(tp, signal5); ATF_TP_ADD_TC_HAVE_PID(tp, signal6); ATF_TP_ADD_TC_HAVE_PID(tp, signal7); + ATF_TP_ADD_TC(tp, signal8); return atf_no_error(); }