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tests: Add a simple regression test for ptrace(PT_SC_REMOTE)

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MFC after:	1 week
This commit is contained in:
Mark Johnston 2023-05-26 15:13:20 -04:00
parent c2c9ac88c2
commit 844942888f
1 changed files with 54 additions and 1 deletions
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55
tests/sys/kern/ptrace_test.c
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@ -4318,9 +4318,61 @@ ATF_TC_BODY(ptrace__procdesc_reparent_wait_child, tc)
REQUIRE_EQ(close(pd), 0);
}
/*
* Try using PT_SC_REMOTE to get the PID of a traced child process.
*/
ATF_TC_WITHOUT_HEAD(ptrace__PT_SC_REMOTE_getpid);
ATF_TC_BODY(ptrace__PT_SC_REMOTE_getpid, tc)
{
struct ptrace_sc_remote pscr;
pid_t fpid, wpid;
int status;
ATF_REQUIRE((fpid = fork()) != -1);
if (fpid == 0) {
trace_me();
exit(0);
}
attach_child(fpid);
pscr.pscr_syscall = SYS_getpid;
pscr.pscr_nargs = 0;
pscr.pscr_args = NULL;
ATF_REQUIRE(ptrace(PT_SC_REMOTE, fpid, (caddr_t)&pscr, sizeof(pscr)) !=
-1);
ATF_REQUIRE_MSG(pscr.pscr_ret.sr_error == 0,
"remote getpid failed with error %d", pscr.pscr_ret.sr_error);
ATF_REQUIRE_MSG(pscr.pscr_ret.sr_retval[0] == fpid,
"unexpected return value %lu instead of %d",
pscr.pscr_ret.sr_retval[0], fpid);
wpid = waitpid(fpid, &status, 0);
REQUIRE_EQ(wpid, fpid);
ATF_REQUIRE(WIFSTOPPED(status));
REQUIRE_EQ(WSTOPSIG(status), SIGSTOP);
pscr.pscr_syscall = SYS_getppid;
pscr.pscr_nargs = 0;
pscr.pscr_args = NULL;
ATF_REQUIRE(ptrace(PT_SC_REMOTE, fpid, (caddr_t)&pscr, sizeof(pscr)) !=
-1);
ATF_REQUIRE_MSG(pscr.pscr_ret.sr_error == 0,
"remote getppid failed with error %d", pscr.pscr_ret.sr_error);
ATF_REQUIRE_MSG(pscr.pscr_ret.sr_retval[0] == getpid(),
"unexpected return value %lu instead of %d",
pscr.pscr_ret.sr_retval[0], fpid);
wpid = waitpid(fpid, &status, 0);
REQUIRE_EQ(wpid, fpid);
ATF_REQUIRE(WIFSTOPPED(status));
REQUIRE_EQ(WSTOPSIG(status), SIGSTOP);
ATF_REQUIRE(ptrace(PT_DETACH, fpid, (caddr_t)1, 0) != -1);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, ptrace__parent_wait_after_trace_me);
ATF_TP_ADD_TC(tp, ptrace__parent_wait_after_attach);
ATF_TP_ADD_TC(tp, ptrace__parent_sees_exit_after_child_debugger);
@ -4384,6 +4436,7 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, ptrace__proc_reparent);
ATF_TP_ADD_TC(tp, ptrace__procdesc_wait_child);
ATF_TP_ADD_TC(tp, ptrace__procdesc_reparent_wait_child);
ATF_TP_ADD_TC(tp, ptrace__PT_SC_REMOTE_getpid);
return (atf_no_error());
}