diff options
Diffstat (limited to 'tests/sys/kern/ptrace_test.c')
| -rw-r--r-- | tests/sys/kern/ptrace_test.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tests/sys/kern/ptrace_test.c b/tests/sys/kern/ptrace_test.c index c5160d066af7..d36dfe951e20 100644 --- a/tests/sys/kern/ptrace_test.c +++ b/tests/sys/kern/ptrace_test.c @@ -4523,6 +4523,73 @@ ATF_TC_BODY(ptrace__PT_ATTACH_no_EINTR, tc) ATF_REQUIRE(timespeccmp(&shm->sleep_time, &twelve_sec, <=)); } +ATF_TC_WITHOUT_HEAD(ptrace__PT_DETACH_continued); +ATF_TC_BODY(ptrace__PT_DETACH_continued, tc) +{ + char buf[256]; + pid_t debuggee, debugger; + int dpipe[2] = {-1, -1}, status; + + /* Setup the debuggee's pipe, which we'll use to let it terminate. */ + ATF_REQUIRE(pipe(dpipe) == 0); + ATF_REQUIRE((debuggee = fork()) != -1); + + if (debuggee == 0) { + ssize_t readsz; + + /* + * The debuggee will just absorb everything until the parent + * closes it. In the process, we expect it to get SIGSTOP'd, + * then ptrace(2)d and finally, it should resume after we detach + * and the parent will be notified. + */ + close(dpipe[1]); + while ((readsz = read(dpipe[0], buf, sizeof(buf))) != 0) { + if (readsz > 0 || errno == EINTR) + continue; + _exit(1); + } + + _exit(0); + } + + close(dpipe[0]); + + ATF_REQUIRE(kill(debuggee, SIGSTOP) == 0); + REQUIRE_EQ(waitpid(debuggee, &status, WUNTRACED), debuggee); + ATF_REQUIRE(WIFSTOPPED(status)); + + /* Child is stopped, enter the debugger to attach/detach. */ + ATF_REQUIRE((debugger = fork()) != -1); + if (debugger == 0) { + REQUIRE_EQ(ptrace(PT_ATTACH, debuggee, 0, 0), 0); + REQUIRE_EQ(waitpid(debuggee, &status, 0), debuggee); + ATF_REQUIRE(WIFSTOPPED(status)); + REQUIRE_EQ(WSTOPSIG(status), SIGSTOP); + + REQUIRE_EQ(ptrace(PT_DETACH, debuggee, 0, 0), 0); + _exit(0); + } + + REQUIRE_EQ(waitpid(debugger, &status, 0), debugger); + ATF_REQUIRE(WIFEXITED(status)); + REQUIRE_EQ(WEXITSTATUS(status), 0); + + REQUIRE_EQ(waitpid(debuggee, &status, WCONTINUED), debuggee); + ATF_REQUIRE(WIFCONTINUED(status)); + + /* + * Closing the pipe will trigger the debuggee to exit now that the + * child has resumed following detach. + */ + close(dpipe[1]); + + REQUIRE_EQ(waitpid(debuggee, &status, 0), debuggee); + ATF_REQUIRE(WIFEXITED(status)); + REQUIRE_EQ(WEXITSTATUS(status), 0); + +} + ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, ptrace__parent_wait_after_trace_me); @@ -4592,6 +4659,7 @@ ATF_TP_ADD_TCS(tp) ATF_TP_ADD_TC(tp, ptrace__PT_SC_REMOTE_getpid); ATF_TP_ADD_TC(tp, ptrace__reap_kill_stopped); ATF_TP_ADD_TC(tp, ptrace__PT_ATTACH_no_EINTR); + ATF_TP_ADD_TC(tp, ptrace__PT_DETACH_continued); return (atf_no_error()); } |