[src/trunk]: src/tests/kernel Add new tests read[1234] in t_ptrace_wait{, 3, 4, ...

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6e8adda0026f
branches:  trunk
changeset: 349080:6e8adda0026f
user:      kamil <kamil%NetBSD.org@localhost>
date:      Wed Nov 23 03:02:56 2016 +0000

description:
Add new tests read[1234] in t_ptrace_wait{,3,4,6,id,pid}

read1:
    Verify PT_READ_D called once

read2:
    Verify PT_READ_D called twice

read3:
    Verify PT_READ_D called three times

read4:
    Verify PT_READ_D called four times

Sponsored by <The NetBSD Foundation>

diffstat:

 tests/kernel/t_ptrace_wait.c |  325 ++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 323 insertions(+), 2 deletions(-)

diffs (truncated from 353 to 300 lines):

diff -r bfee2cdf0b4a -r 6e8adda0026f tests/kernel/t_ptrace_wait.c
--- a/tests/kernel/t_ptrace_wait.c      Wed Nov 23 01:49:05 2016 +0000
+++ b/tests/kernel/t_ptrace_wait.c      Wed Nov 23 03:02:56 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_ptrace_wait.c,v 1.21 2016/11/23 01:49:05 kamil Exp $ */
+/*     $NetBSD: t_ptrace_wait.c,v 1.22 2016/11/23 03:02:56 kamil Exp $ */
 
 /*-
  * Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.21 2016/11/23 01:49:05 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.22 2016/11/23 03:02:56 kamil Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -2525,6 +2525,322 @@
        TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
 }
 
+ATF_TC(read1);
+ATF_TC_HEAD(read1, tc)
+{
+       atf_tc_set_md_var(tc, "descr",
+           "Verify PT_READ_D called once");
+}
+
+ATF_TC_BODY(read1, tc)
+{
+       const int exitval = 5;
+       const int sigval = SIGSTOP;
+       pid_t child, wpid;
+       int lookup_me = 0;
+       const int magic = (int)random();
+#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 = magic;
+
+               printf("Before raising %s from child\n", strsignal(sigval));
+               FORKEE_ASSERT(raise(sigval) == 0);
+
+               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 new lookup_me from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       errno = 0;
+       lookup_me = ptrace(PT_READ_D, child, &lookup_me, 0);
+       ATF_REQUIRE_EQ(errno, 0);
+
+       ATF_REQUIRE_EQ_MSG(lookup_me, magic,
+           "got value %" PRIx8 " != expected %" PRIx8, lookup_me, magic);
+
+       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_TC(read2);
+ATF_TC_HEAD(read2, tc)
+{
+       atf_tc_set_md_var(tc, "descr",
+           "Verify PT_READ_D called twice");
+}
+
+ATF_TC_BODY(read2, tc)
+{
+       const int exitval = 5;
+       const int sigval = SIGSTOP;
+       pid_t child, wpid;
+       int lookup_me1 = 0;
+       int lookup_me2 = 0;
+       const int magic1 = (int)random();
+       const int magic2 = (int)random();
+#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_me1 = magic1;
+               lookup_me2 = magic2;
+
+               printf("Before raising %s from child\n", strsignal(sigval));
+               FORKEE_ASSERT(raise(sigval) == 0);
+
+               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 new lookup_me1 from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       errno = 0;
+       lookup_me1 = ptrace(PT_READ_D, child, &lookup_me1, 0);
+       ATF_REQUIRE_EQ(errno, 0);
+
+       ATF_REQUIRE_EQ_MSG(lookup_me1, magic1,
+           "got value %" PRIx8 " != expected %" PRIx8, lookup_me1, magic1);
+
+       printf("Read new lookup_me2 from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       errno = 0;
+       lookup_me2 = ptrace(PT_READ_D, child, &lookup_me2, 0);
+       ATF_REQUIRE_EQ(errno, 0);
+
+       ATF_REQUIRE_EQ_MSG(lookup_me2, magic2,
+           "got value %" PRIx8 " != expected %" PRIx8, lookup_me2, magic2);
+
+       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_TC(read3);
+ATF_TC_HEAD(read3, tc)
+{
+       atf_tc_set_md_var(tc, "descr",
+           "Verify PT_READ_D called three times");
+}
+
+ATF_TC_BODY(read3, tc)
+{
+       const int exitval = 5;
+       const int sigval = SIGSTOP;
+       pid_t child, wpid;
+       int lookup_me1 = 0;
+       int lookup_me2 = 0;
+       int lookup_me3 = 0;
+       const int magic1 = (int)random();
+       const int magic2 = (int)random();
+       const int magic3 = (int)random();
+#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_me1 = magic1;
+               lookup_me2 = magic2;
+               lookup_me3 = magic3;
+
+               printf("Before raising %s from child\n", strsignal(sigval));
+               FORKEE_ASSERT(raise(sigval) == 0);
+
+               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 new lookup_me1 from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       errno = 0;
+       lookup_me1 = ptrace(PT_READ_D, child, &lookup_me1, 0);
+       ATF_REQUIRE_EQ(errno, 0);
+
+       ATF_REQUIRE_EQ_MSG(lookup_me1, magic1,
+           "got value %" PRIx8 " != expected %" PRIx8, lookup_me1, magic1);
+
+       printf("Read new lookup_me2 from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       errno = 0;
+       lookup_me2 = ptrace(PT_READ_D, child, &lookup_me2, 0);
+       ATF_REQUIRE_EQ(errno, 0);
+
+       ATF_REQUIRE_EQ_MSG(lookup_me2, magic2,
+           "got value %" PRIx8 " != expected %" PRIx8, lookup_me2, magic2);
+
+       printf("Read new lookup_me3 from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       errno = 0;
+       lookup_me3 = ptrace(PT_READ_D, child, &lookup_me3, 0);
+       ATF_REQUIRE_EQ(errno, 0);
+
+       ATF_REQUIRE_EQ_MSG(lookup_me3, magic3,
+           "got value %" PRIx8 " != expected %" PRIx8, lookup_me3, magic3);
+
+       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_TC(read4);
+ATF_TC_HEAD(read4, tc)
+{
+       atf_tc_set_md_var(tc, "descr",
+           "Verify PT_READ_D called four times");
+}
+
+ATF_TC_BODY(read4, tc)
+{
+       const int exitval = 5;
+       const int sigval = SIGSTOP;
+       pid_t child, wpid;
+       int lookup_me1 = 0;
+       int lookup_me2 = 0;
+       int lookup_me3 = 0;
+       int lookup_me4 = 0;
+       const int magic1 = (int)random();
+       const int magic2 = (int)random();
+       const int magic3 = (int)random();
+       const int magic4 = (int)random();
+#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_me1 = magic1;
+               lookup_me2 = magic2;
+               lookup_me3 = magic3;
+               lookup_me4 = magic4;
+
+               printf("Before raising %s from child\n", strsignal(sigval));
+               FORKEE_ASSERT(raise(sigval) == 0);
+
+               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 new lookup_me1 from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       errno = 0;
+       lookup_me1 = ptrace(PT_READ_D, child, &lookup_me1, 0);
+       ATF_REQUIRE_EQ(errno, 0);
+
+       ATF_REQUIRE_EQ_MSG(lookup_me1, magic1,
+           "got value %" PRIx8 " != expected %" PRIx8, lookup_me1, magic1);
+
+       printf("Read new lookup_me2 from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());