[src/trunk]: src/tests/kernel Add io_read_auxv1 in t_ptrace_wait{, 3, 4, 6, id, pid}

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

details:   https://anonhg.NetBSD.org/src/rev/f2e5a010a695
branches:  trunk
changeset: 350887:f2e5a010a695
user:      kamil <kamil%NetBSD.org@localhost>
date:      Wed Jan 25 17:01:57 2017 +0000

description:
Add io_read_auxv1 in t_ptrace_wait{,3,4,6,id,pid}

io_read_auxv1:
    Verify PT_READ_AUXV called for tracee

Sponsored by <The NetBSD Foundation>

diffstat:

 tests/kernel/t_ptrace_wait.c |  73 ++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 71 insertions(+), 2 deletions(-)

diffs (108 lines):

diff -r da502007eae4 -r f2e5a010a695 tests/kernel/t_ptrace_wait.c
--- a/tests/kernel/t_ptrace_wait.c      Wed Jan 25 16:11:54 2017 +0000
+++ b/tests/kernel/t_ptrace_wait.c      Wed Jan 25 17:01:57 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_ptrace_wait.c,v 1.60 2017/01/14 19:17:10 kamil Exp $ */
+/*     $NetBSD: t_ptrace_wait.c,v 1.61 2017/01/25 17:01:57 kamil Exp $ */
 
 /*-
  * Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.60 2017/01/14 19:17:10 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.61 2017/01/25 17:01:57 kamil Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -37,6 +37,7 @@
 #include <sys/sysctl.h>
 #include <sys/wait.h>
 #include <machine/reg.h>
+#include <elf.h>
 #include <err.h>
 #include <errno.h>
 #include <lwp.h>
@@ -2407,6 +2408,72 @@
        TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
 }
 
+ATF_TC(io_read_auxv1);
+ATF_TC_HEAD(io_read_auxv1, tc)
+{
+       atf_tc_set_md_var(tc, "descr",
+           "Verify PT_READ_AUXV called for tracee");
+}
+
+ATF_TC_BODY(io_read_auxv1, tc)
+{
+       const int exitval = 5;
+       const int sigval = SIGSTOP;
+       pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+       int status;
+#endif
+       AuxInfo ai[100], *aip;
+       struct ptrace_io_desc io = {
+               .piod_op = PIOD_READ_AUXV,
+               .piod_offs = 0,
+               .piod_addr = ai,
+               .piod_len = sizeof(ai)
+       };
+
+       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);
+
+               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 AUXV from tracee (PID=%d) by tracer (PID=%d)\n",
+           child, getpid());
+       ATF_REQUIRE(ptrace(PT_IO, child, &io, 0) != -1);
+
+       printf("Asserting that AUXV length (%zu) is > 0\n", io.piod_len);
+       ATF_REQUIRE(io.piod_len > 0);
+
+       for (aip = ai; aip->a_type != AT_NULL; aip++)
+               printf("a_type=%#llx a_v=%#llx\n",
+                   (long long int)aip->a_type, (long long int)aip->a_v);
+
+       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(read_d1);
 ATF_TC_HEAD(read_d1, tc)
 {
@@ -5667,6 +5734,8 @@
        ATF_TP_ADD_TC(tp, read_i3);
        ATF_TP_ADD_TC(tp, read_i4);
 
+       ATF_TP_ADD_TC(tp, io_read_auxv1);
+
        ATF_TP_ADD_TC_HAVE_GPREGS(tp, regs1);
        ATF_TP_ADD_TC_HAVE_GPREGS(tp, regs2);
        ATF_TP_ADD_TC_HAVE_GPREGS(tp, regs3);