Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add new test attach4 in t_ptrace_wait{,3,4,6,id,pid} 

Assert that tracer child can PT_ATTACH to its parent.

Sponsored by <The NetBSD Foundation>.
This commit is contained in:
kamil 2016-11-12 12:54:32 +00:00
parent 3d6f4a8817
commit 83d5aa4c38
1 changed files with 82 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
tests/kernel/t_ptrace_wait.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: t_ptrace_wait.c,v 1.4 2016/11/11 17:08:54 christos Exp $ */
/* $NetBSD: t_ptrace_wait.c,v 1.5 2016/11/12 12:54:32 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_ptrace_wait.c,v 1.4 2016/11/11 17:08:54 christos Exp $");
__RCSID("$NetBSD: t_ptrace_wait.c,v 1.5 2016/11/12 12:54:32 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@ -892,6 +892,85 @@ ATF_TC_BODY(attach3, tc)
ATF_REQUIRE(close(fds_totracee[1]) == 0);
}
ATF_TC(attach4);
ATF_TC_HEAD(attach4, tc)
{
atf_tc_set_md_var(tc, "descr",
"Assert that tracer child can PT_ATTACH to its parent");
}
ATF_TC_BODY(attach4, tc)
{
int fds_totracer[2], fds_fromtracer[2];
int rv;
const int exitval_tracer = 5;
pid_t tracer, wpid;
uint8_t msg = 0xde; /* dummy message for IPC based on pipe(2) */
#if defined(TWAIT_HAVE_STATUS)
int status;
#endif
printf("Spawn tracer\n");
ATF_REQUIRE(pipe(fds_totracer) == 0);
ATF_REQUIRE(pipe(fds_fromtracer) == 0);
tracer = atf_utils_fork();
if (tracer == 0) {
FORKEE_ASSERT(close(fds_totracer[1]) == 0);
FORKEE_ASSERT(close(fds_fromtracer[0]) == 0);
/* Wait for message from the parent */
rv = read(fds_totracer[0], &msg, sizeof(msg));
FORKEE_ASSERT(rv == sizeof(msg));
printf("Attach to parent PID %d with PT_ATTACH from child\n",
getppid());
FORKEE_ASSERT(ptrace(PT_ATTACH, getppid(), NULL, 0) != -1);
printf("Wait for the stopped parent process with %s()\n",
TWAIT_FNAME);
FORKEE_REQUIRE_SUCCESS(
wpid = TWAIT_GENERIC(getppid(), &status, 0), getppid());
forkee_status_stopped(status, SIGSTOP);
printf("Resume parent with PT_DETACH\n");
FORKEE_ASSERT(ptrace(PT_DETACH, getppid(), (void *)1, 0)
!= -1);
/* Wait for message from the parent */
rv = write(fds_fromtracer[1], &msg, sizeof(msg));
FORKEE_ASSERT(rv == sizeof(msg));
_exit(exitval_tracer);
}
ATF_REQUIRE(close(fds_totracer[0]) == 0);
ATF_REQUIRE(close(fds_fromtracer[1]) == 0);
printf("Wait for the tracer to become ready\n");
rv = write(fds_totracer[1], &msg, sizeof(msg));
ATF_REQUIRE(rv == sizeof(msg));
printf("Let the tracer exit now\n");
rv = read(fds_fromtracer[0], &msg, sizeof(msg));
ATF_REQUIRE(rv == sizeof(msg));
printf("Wait for tracer to exit with %s()\n", TWAIT_FNAME);
TWAIT_REQUIRE_SUCCESS(
wpid = TWAIT_GENERIC(tracer, &status, 0), tracer);
validate_status_exited(status, exitval_tracer);
printf("Before calling %s() for tracer\n", TWAIT_FNAME);
TWAIT_REQUIRE_FAILURE(ECHILD,
wpid = TWAIT_GENERIC(tracer, &status, 0));
printf("fds_fromtracer is no longer needed - close it\n");
ATF_REQUIRE(close(fds_fromtracer[0]) == 0);
printf("fds_totracer is no longer needed - close it\n");
ATF_REQUIRE(close(fds_totracer[1]) == 0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, traceme1);
@ -904,6 +983,7 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, attach2);
#endif
ATF_TP_ADD_TC(tp, attach3);
ATF_TP_ADD_TC(tp, attach4);
#if defined(TWAIT_WAIT4TYPE)
/* TODO */