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[src/trunk]: src/tests/lib/libc/sys Add new fork/vfork ATF trests in t_ptrace...
details: https://anonhg.NetBSD.org/src/rev/5ea08eac15ee
branches: trunk
changeset: 450975:5ea08eac15ee
user: kamil <kamil%NetBSD.org@localhost>
date: Wed May 01 18:20:23 2019 +0000
description:
Add new fork/vfork ATF trests in t_ptrace_wait*
Add new tests:
- fork_detach_forker
- vfork_detach_vforker
- vfork_detach_vforkerdone
- fork_kill_forker
- vfork_kill_vforker
- vfork_kill_vforkerdone
All tests pass with recent kernel changes.
diffstat:
tests/lib/libc/sys/t_ptrace_wait.c | 200 ++++++++++++++++++++++++++++++++++++-
1 files changed, 197 insertions(+), 3 deletions(-)
diffs (228 lines):
diff -r 8de6f25d5853 -r 5ea08eac15ee tests/lib/libc/sys/t_ptrace_wait.c
--- a/tests/lib/libc/sys/t_ptrace_wait.c Wed May 01 18:01:54 2019 +0000
+++ b/tests/lib/libc/sys/t_ptrace_wait.c Wed May 01 18:20:23 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.115 2019/04/30 22:39:31 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.116 2019/05/01 18:20:23 kamil Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.115 2019/04/30 22:39:31 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.116 2019/05/01 18:20:23 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -3199,6 +3199,187 @@
/// ----------------------------------------------------------------------------
+#if defined(TWAIT_HAVE_PID)
+static void
+fork_detach_forker_body(bool detachfork, bool detachvfork,
+ bool detachvforkdone, bool kill_process)
+{
+ const int exitval = 5;
+ const int exitval2 = 15;
+ const int sigval = SIGSTOP;
+ pid_t child, child2 = 0, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ ptrace_state_t state;
+ const int slen = sizeof(state);
+ ptrace_event_t event;
+ const int elen = sizeof(event);
+
+ pid_t (*fn)(void);
+ int op;
+
+ ATF_REQUIRE((detachfork && !detachvfork && !detachvforkdone) ||
+ (!detachfork && detachvfork && !detachvforkdone) ||
+ (!detachfork && !detachvfork && detachvforkdone));
+
+ if (detachfork)
+ fn = fork;
+ else
+ fn = vfork;
+
+ DPRINTF("Before forking process PID=%d\n", getpid());
+ SYSCALL_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ DPRINTF("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ FORKEE_ASSERT((child2 = (fn)()) != -1);
+
+ if (child2 == 0)
+ _exit(exitval2);
+
+ FORKEE_REQUIRE_SUCCESS
+ (wpid = TWAIT_GENERIC(child2, &status, 0), child2);
+
+ forkee_status_exited(status, exitval2);
+
+ DPRINTF("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ DPRINTF("Set EVENT_MASK for the child %d\n", child);
+ event.pe_set_event = PTRACE_FORK | PTRACE_VFORK | PTRACE_VFORK_DONE;
+ SYSCALL_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1);
+
+ DPRINTF("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ DPRINTF("Before calling %s() for the child %d\n", TWAIT_FNAME, child);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ SYSCALL_REQUIRE(
+ ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
+ op = (fn == fork) ? PTRACE_FORK : PTRACE_VFORK;
+ ATF_REQUIRE_EQ(state.pe_report_event & op, op);
+
+ child2 = state.pe_other_pid;
+ DPRINTF("Reported ptrace event with forkee %d\n", child2);
+
+ if (detachfork || detachvfork)
+ op = kill_process ? PT_KILL : PT_DETACH;
+ else
+ op = PT_CONTINUE;
+ SYSCALL_REQUIRE(ptrace(op, child, (void *)1, 0) != -1);
+
+ DPRINTF("Before calling %s() for the forkee %d of the child %d\n",
+ TWAIT_FNAME, child2, child);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0), child2);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ SYSCALL_REQUIRE(
+ ptrace(PT_GET_PROCESS_STATE, child2, &state, slen) != -1);
+ op = (fn == fork) ? PTRACE_FORK : PTRACE_VFORK;
+ ATF_REQUIRE_EQ(state.pe_report_event & op, op);
+ ATF_REQUIRE_EQ(state.pe_other_pid, child);
+
+ DPRINTF("Before resuming the forkee process where it left off "
+ "and without signal to be sent\n");
+ SYSCALL_REQUIRE(
+ ptrace(PT_CONTINUE, child2, (void *)1, 0) != -1);
+
+ if (detachvforkdone && fn == vfork) {
+ DPRINTF("Before calling %s() for the child %d\n", TWAIT_FNAME,
+ child);
+ TWAIT_REQUIRE_SUCCESS(
+ wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ SYSCALL_REQUIRE(
+ ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
+ ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK_DONE);
+
+ child2 = state.pe_other_pid;
+ DPRINTF("Reported PTRACE_VFORK_DONE event with forkee %d\n",
+ child2);
+
+ op = kill_process ? PT_KILL : PT_DETACH;
+ DPRINTF("Before resuming the child process where it left off "
+ "and without signal to be sent\n");
+ SYSCALL_REQUIRE(ptrace(op, child, (void *)1, 0) != -1);
+ }
+
+ DPRINTF("Before calling %s() for the forkee - expected exited\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0), child2);
+
+ validate_status_exited(status, exitval2);
+
+ DPRINTF("Before calling %s() for the forkee - expected no process\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child2, &status, 0));
+
+ DPRINTF("Before calling %s() for the forkee - expected exited\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ if (kill_process) {
+ validate_status_signaled(status, SIGKILL, 0);
+ } else {
+ validate_status_exited(status, exitval);
+ }
+
+ DPRINTF("Before calling %s() for the child - expected no process\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
+#define FORK_DETACH_FORKER(name,detfork,detvfork,detvforkdone,kprocess) \
+ATF_TC(name); \
+ATF_TC_HEAD(name, tc) \
+{ \
+ atf_tc_set_md_var(tc, "descr", "Verify %s %s%s%s", \
+ kprocess ? "killed" : "detached", \
+ detfork ? "forker" : "", \
+ detvfork ? "vforker" : "", \
+ detvforkdone ? "vforker done" : ""); \
+} \
+ \
+ATF_TC_BODY(name, tc) \
+{ \
+ \
+ fork_detach_forker_body(detfork, detvfork, detvforkdone, \
+ kprocess); \
+}
+
+FORK_DETACH_FORKER(fork_detach_forker, true, false, false, false)
+#if TEST_VFORK_ENABLED
+FORK_DETACH_FORKER(vfork_detach_vforker, false, true, false, false)
+FORK_DETACH_FORKER(vfork_detach_vforkerdone, false, false, true, false)
+#endif
+FORK_DETACH_FORKER(fork_kill_forker, true, false, false, true)
+#if TEST_VFORK_ENABLED
+FORK_DETACH_FORKER(vfork_kill_vforker, false, true, false, true)
+FORK_DETACH_FORKER(vfork_kill_vforkerdone, false, false, true, true)
+#endif
+#endif
+
+/// ----------------------------------------------------------------------------
+
#if TEST_VFORK_ENABLED
static void
traceme_vfork_fork_body(pid_t (*fn)(void))
@@ -7481,7 +7662,20 @@
ATF_TP_ADD_TC_HAVE_PID(tp, vfork6);
ATF_TP_ADD_TC_HAVE_PID(tp, vfork7);
ATF_TP_ADD_TC_HAVE_PID(tp, vfork8);
-
+#endif
+
+ ATF_TP_ADD_TC_HAVE_PID(tp, fork_detach_forker);
+#if TEST_VFORK_ENABLED
+ ATF_TP_ADD_TC_HAVE_PID(tp, vfork_detach_vforker);
+ ATF_TP_ADD_TC_HAVE_PID(tp, vfork_detach_vforkerdone);
+#endif
+ ATF_TP_ADD_TC_HAVE_PID(tp, fork_kill_forker);
+#if TEST_VFORK_ENABLED
+ ATF_TP_ADD_TC_HAVE_PID(tp, vfork_kill_vforker);
+ ATF_TP_ADD_TC_HAVE_PID(tp, vfork_kill_vforkerdone);
+#endif
+
+#if TEST_VFORK_ENABLED
ATF_TP_ADD_TC(tp, traceme_vfork_fork);
ATF_TP_ADD_TC(tp, traceme_vfork_vfork);
#endif
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