Module Name: src
Committed By: kamil
Date: Tue Feb 28 13:19:50 UTC 2017
Modified Files:
src/tests/kernel: t_ptrace_wait.c
Log Message:
Add new test syscallemu1 in t_ptrace_wait*
syscallemu1:
Verify that exit(2) can be intercepted with PT_SYSCALLEMU
This test is failing as PT_SYSCALL does not stop the process on syscall
entry. This renders PT_SYSCALL broken on NetBSD.
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.73 -r1.74 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:1.73 src/tests/kernel/t_ptrace_wait.c:1.74
--- src/tests/kernel/t_ptrace_wait.c:1.73 Fri Feb 24 06:17:48 2017
+++ src/tests/kernel/t_ptrace_wait.c Tue Feb 28 13:19:50 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.73 2017/02/24 06:17:48 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.74 2017/02/28 13:19:50 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.73 2017/02/24 06:17:48 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.74 2017/02/28 13:19:50 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -7470,6 +7470,77 @@ ATF_TC_BODY(syscall1, tc)
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
+ATF_TC(syscallemu1);
+ATF_TC_HEAD(syscallemu1, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that exit(2) can be intercepted with PT_SYSCALLEMU");
+}
+
+ATF_TC_BODY(syscallemu1, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+
+ 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);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ syscall(SYS_exit, 100);
+
+ 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("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_SYSCALL, 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, SIGTRAP);
+
+ printf("Set SYSCALLEMU for intercepted syscall\n");
+ ATF_REQUIRE(ptrace(PT_SYSCALLEMU, child, (void *)1, 0) != -1);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_SYSCALL, 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, SIGTRAP);
+
+ 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_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
ATF_TP_ADD_TCS(tp)
{
setvbuf(stdout, NULL, _IONBF, 0);
@@ -7600,5 +7671,7 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, syscall1);
+ ATF_TP_ADD_TC(tp, syscallemu1);
+
return atf_no_error();
}
