Module Name: src
Committed By: kamil
Date: Wed Nov 23 05:00:20 UTC 2016
Modified Files:
src/tests/kernel: t_ptrace_wait.c
Log Message:
Add io_read_write_handshake to t_ptrace_wait{,3,4,6,id,pid}
Verify PT_IO with PIOD_READ_D and PIOD_WRITE_D handshake
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.22 -r1.23 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:1.22 src/tests/kernel/t_ptrace_wait.c:1.23
--- src/tests/kernel/t_ptrace_wait.c:1.22 Wed Nov 23 03:02:56 2016
+++ src/tests/kernel/t_ptrace_wait.c Wed Nov 23 05:00:20 2016
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.22 2016/11/23 03:02:56 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.23 2016/11/23 05:00:20 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.22 2016/11/23 03:02:56 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.23 2016/11/23 05:00:20 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -3107,6 +3107,92 @@ ATF_TC_BODY(write4, tc)
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
+ATF_TC(io_read_write_handshake);
+ATF_TC_HEAD(io_read_write_handshake, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify PT_IO with PIOD_READ_D and PIOD_WRITE_D handshake");
+}
+
+ATF_TC_BODY(io_read_write_handshake, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+ uint8_t lookup_me_fromtracee = 0;
+ const uint8_t magic_fromtracee = (uint8_t)random();
+ uint8_t lookup_me_totracee = 0;
+ const uint8_t magic_totracee = (uint8_t)random();
+ struct ptrace_io_desc io_fromtracee = {
+ .piod_op = PIOD_READ_D,
+ .piod_offs = &lookup_me_fromtracee,
+ .piod_addr = &lookup_me_fromtracee,
+ .piod_len = sizeof(lookup_me_fromtracee)
+ };
+ struct ptrace_io_desc io_totracee = {
+ .piod_op = PIOD_WRITE_D,
+ .piod_offs = &lookup_me_totracee,
+ .piod_addr = &lookup_me_totracee,
+ .piod_len = sizeof(lookup_me_totracee)
+ };
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+
+ printf("Before forking process PID=%d\n", getpid());
+ child = atf_utils_fork();
+ if (child == 0) {
+ printf("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ lookup_me_fromtracee = magic_fromtracee;
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ FORKEE_ASSERT_EQ(lookup_me_totracee, magic_totracee);
+
+ 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("Read lookup_me_fromtracee PID=%d by tracer (PID=%d)\n",
+ child, getpid());
+ ATF_REQUIRE(ptrace(PT_IO, child, &io_fromtracee, 0) != -1);
+
+ ATF_REQUIRE_EQ_MSG(lookup_me_fromtracee, magic_fromtracee,
+ "got value %" PRIx8 " != expected %" PRIx8, lookup_me_fromtracee,
+ magic_fromtracee);
+
+ lookup_me_totracee = magic_totracee;
+
+ printf("Write lookup_me_totracee to PID=%d by tracer (PID=%d)\n",
+ child, getpid());
+ ATF_REQUIRE(ptrace(PT_IO, child, &io_totracee, 0) != -1);
+
+ ATF_REQUIRE_EQ_MSG(lookup_me_totracee, magic_totracee,
+ "got value %" PRIx8 " != expected %" PRIx8, lookup_me_totracee,
+ magic_totracee);
+
+ 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));
+}
+
#if defined(TWAIT_HAVE_PID)
#define ATF_TP_ADD_TC_HAVE_PID(a,b) ATF_TP_ADD_TC(a,b)
#else
@@ -3159,5 +3245,7 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, write3);
ATF_TP_ADD_TC(tp, write4);
+ ATF_TP_ADD_TC(tp, io_read_write_handshake);
+
return atf_no_error();
}
