Module Name: src
Committed By: kamil
Date: Wed May 16 02:47:25 UTC 2018
Modified Files:
src/tests/lib/libc/sys: t_ptrace_wait.c
Log Message:
Add a new ATF ptrace(2) test: traceme_vfork_exec
Verify PT_TRACE_ME followed by exec(3) in a vfork(2)ed child.
This tests passes correctly.
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.42 -r1.43 src/tests/lib/libc/sys/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/lib/libc/sys/t_ptrace_wait.c
diff -u src/tests/lib/libc/sys/t_ptrace_wait.c:1.42 src/tests/lib/libc/sys/t_ptrace_wait.c:1.43
--- src/tests/lib/libc/sys/t_ptrace_wait.c:1.42 Wed May 16 01:36:29 2018
+++ src/tests/lib/libc/sys/t_ptrace_wait.c Wed May 16 02:47:25 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.42 2018/05/16 01:36:29 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.43 2018/05/16 02:47:25 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.42 2018/05/16 01:36:29 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.43 2018/05/16 02:47:25 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -500,6 +500,67 @@ ATF_TC_BODY(traceme_vfork_breakpoint, tc
/// ----------------------------------------------------------------------------
+ATF_TC(traceme_vfork_exec);
+ATF_TC_HEAD(traceme_vfork_exec, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify PT_TRACE_ME followed by exec(3) in a vfork(2)ed child");
+}
+
+ATF_TC_BODY(traceme_vfork_exec, tc)
+{
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ DPRINTF("Before forking process PID=%d\n", getpid());
+ SYSCALL_REQUIRE((child = vfork()) != -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 calling execve(2) from child\n");
+ execlp("/bin/echo", "/bin/echo", NULL);
+
+ /* NOTREACHED */
+ FORKEE_ASSERTX(0 && "Not reached");
+ }
+ 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("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ SYSCALL_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_EXEC);
+
+ 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\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
+/// ----------------------------------------------------------------------------
+
#if defined(TWAIT_HAVE_PID)
ATF_TC(attach1);
ATF_TC_HEAD(attach1, tc)
@@ -6969,6 +7030,8 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, traceme_vfork_breakpoint);
+ ATF_TP_ADD_TC(tp, traceme_vfork_exec);
+
ATF_TP_ADD_TC_HAVE_PID(tp, attach1);
ATF_TP_ADD_TC_HAVE_PID(tp, attach2);
ATF_TP_ADD_TC(tp, attach3);
