Module Name: src
Committed By: kamil
Date: Tue Feb 21 08:40:16 UTC 2017
Modified Files:
src/tests/kernel/arch/amd64: t_ptrace_wait.c
Log Message:
Add new tests dbregs_dr*_dont_inherit_execve in arch/amd64
Added tests:
- dbregs_dr0_dont_inherit_execve
- dbregs_dr1_dont_inherit_execve
- dbregs_dr2_dont_inherit_execve
- dbregs_dr3_dont_inherit_execve
- dbregs_dr6_dont_inherit_execve
- dbregs_dr7_dont_inherit_execve
Debug Registers must no be inherited after exec() call.
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.23 -r1.24 src/tests/kernel/arch/amd64/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/arch/amd64/t_ptrace_wait.c
diff -u src/tests/kernel/arch/amd64/t_ptrace_wait.c:1.23 src/tests/kernel/arch/amd64/t_ptrace_wait.c:1.24
--- src/tests/kernel/arch/amd64/t_ptrace_wait.c:1.23 Mon Feb 20 06:48:49 2017
+++ src/tests/kernel/arch/amd64/t_ptrace_wait.c Tue Feb 21 08:40:16 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.23 2017/02/20 06:48:49 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.24 2017/02/21 08:40:16 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.23 2017/02/20 06:48:49 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.24 2017/02/21 08:40:16 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -6678,6 +6678,624 @@ ATF_TC_BODY(dbregs_dr7_dont_inherit_lwp,
}
#endif
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr0_dont_inherit_execve);
+ATF_TC_HEAD(dbregs_dr0_dont_inherit_execve, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that execve(2) is intercepted by tracer and Debug "
+ "Register 0 is reset");
+}
+
+ATF_TC_BODY(dbregs_dr0_dont_inherit_execve, tc)
+{
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ size_t i;
+ struct dbreg r1;
+ struct dbreg r2;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ 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 calling execve(2) from child\n");
+ execlp("/bin/echo", "/bin/echo", NULL);
+
+ FORKEE_ASSERT(0 && "Not reached");
+ }
+ 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("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[0] = (long)(intptr_t)check_happy;
+ printf("Set DR0 (r1.dr[0]) to new value %#lx\n", r1.dr[0]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ 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_stopped(status, sigval);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("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);
+
+ printf("Call GETDBREGS for the child process after execve(2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("State of the debug registers (r2):\n");
+ for (i = 0; i < __arraycount(r2.dr); i++)
+ printf("r2[%zu]=%#lx\n", i, r2.dr[i]);
+
+ printf("Assert that (r1) and (r2) are not the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, sizeof(r1)) != 0);
+
+ 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);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr1_dont_inherit_execve);
+ATF_TC_HEAD(dbregs_dr1_dont_inherit_execve, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that execve(2) is intercepted by tracer and Debug "
+ "Register 1 is reset");
+}
+
+ATF_TC_BODY(dbregs_dr1_dont_inherit_execve, tc)
+{
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ size_t i;
+ struct dbreg r1;
+ struct dbreg r2;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ 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 calling execve(2) from child\n");
+ execlp("/bin/echo", "/bin/echo", NULL);
+
+ FORKEE_ASSERT(0 && "Not reached");
+ }
+ 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("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[1] = (long)(intptr_t)check_happy;
+ printf("Set DR1 (r1.dr[1]) to new value %#lx\n", r1.dr[1]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ 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_stopped(status, sigval);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("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);
+
+ printf("Call GETDBREGS for the child process after execve(2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("State of the debug registers (r2):\n");
+ for (i = 0; i < __arraycount(r2.dr); i++)
+ printf("r2[%zu]=%#lx\n", i, r2.dr[i]);
+
+ printf("Assert that (r1) and (r2) are not the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, sizeof(r1)) != 0);
+
+ 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);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr2_dont_inherit_execve);
+ATF_TC_HEAD(dbregs_dr2_dont_inherit_execve, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that execve(2) is intercepted by tracer and Debug "
+ "Register 2 is reset");
+}
+
+ATF_TC_BODY(dbregs_dr2_dont_inherit_execve, tc)
+{
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ size_t i;
+ struct dbreg r1;
+ struct dbreg r2;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ 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 calling execve(2) from child\n");
+ execlp("/bin/echo", "/bin/echo", NULL);
+
+ FORKEE_ASSERT(0 && "Not reached");
+ }
+ 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("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[2] = (long)(intptr_t)check_happy;
+ printf("Set DR2 (r1.dr[2]) to new value %#lx\n", r1.dr[2]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ 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_stopped(status, sigval);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("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);
+
+ printf("Call GETDBREGS for the child process after execve(2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("State of the debug registers (r2):\n");
+ for (i = 0; i < __arraycount(r2.dr); i++)
+ printf("r2[%zu]=%#lx\n", i, r2.dr[i]);
+
+ printf("Assert that (r1) and (r2) are not the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, sizeof(r1)) != 0);
+
+ 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);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr3_dont_inherit_execve);
+ATF_TC_HEAD(dbregs_dr3_dont_inherit_execve, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that execve(2) is intercepted by tracer and Debug "
+ "Register 3 is reset");
+}
+
+ATF_TC_BODY(dbregs_dr3_dont_inherit_execve, tc)
+{
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ size_t i;
+ struct dbreg r1;
+ struct dbreg r2;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ 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 calling execve(2) from child\n");
+ execlp("/bin/echo", "/bin/echo", NULL);
+
+ FORKEE_ASSERT(0 && "Not reached");
+ }
+ 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("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[3] = (long)(intptr_t)check_happy;
+ printf("Set DR3 (r1.dr[3]) to new value %#lx\n", r1.dr[3]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ 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_stopped(status, sigval);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("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);
+
+ printf("Call GETDBREGS for the child process after execve(2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("State of the debug registers (r2):\n");
+ for (i = 0; i < __arraycount(r2.dr); i++)
+ printf("r2[%zu]=%#lx\n", i, r2.dr[i]);
+
+ printf("Assert that (r1) and (r2) are not the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, sizeof(r1)) != 0);
+
+ 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);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr6_dont_inherit_execve);
+ATF_TC_HEAD(dbregs_dr6_dont_inherit_execve, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that execve(2) is intercepted by tracer and Debug "
+ "Register 6 is reset");
+}
+
+ATF_TC_BODY(dbregs_dr6_dont_inherit_execve, tc)
+{
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ size_t i;
+ struct dbreg r1;
+ struct dbreg r2;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ 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 calling execve(2) from child\n");
+ execlp("/bin/echo", "/bin/echo", NULL);
+
+ FORKEE_ASSERT(0 && "Not reached");
+ }
+ 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("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[6] = 1; /* breakpoint condition dr0 detected */
+ printf("Set DR6 (r1.dr[6]) to new value %#lx\n", r1.dr[6]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ 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_stopped(status, sigval);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("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);
+
+ printf("Call GETDBREGS for the child process after execve(2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("State of the debug registers (r2):\n");
+ for (i = 0; i < __arraycount(r2.dr); i++)
+ printf("r2[%zu]=%#lx\n", i, r2.dr[i]);
+
+ printf("Assert that (r1) and (r2) are not the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, sizeof(r1)) != 0);
+
+ 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);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(HAVE_DBREGS)
+ATF_TC(dbregs_dr7_dont_inherit_execve);
+ATF_TC_HEAD(dbregs_dr7_dont_inherit_execve, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that execve(2) is intercepted by tracer and Debug "
+ "Register 7 is reset");
+}
+
+ATF_TC_BODY(dbregs_dr7_dont_inherit_execve, tc)
+{
+ const int sigval = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ size_t i;
+ struct dbreg r1;
+ struct dbreg r2;
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ 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 calling execve(2) from child\n");
+ execlp("/bin/echo", "/bin/echo", NULL);
+
+ FORKEE_ASSERT(0 && "Not reached");
+ }
+ 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("Call GETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r1, 0) != -1);
+
+ printf("State of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ r1.dr[7] = __BIT(16); /* break on data writes dr0 */
+ printf("Set DR7 (r1.dr[7]) to new value %#lx\n", r1.dr[7]);
+
+ printf("New state of the debug registers (r1):\n");
+ for (i = 0; i < __arraycount(r1.dr); i++)
+ printf("r1[%zu]=%#lx\n", i, r1.dr[i]);
+
+ printf("Call SETDBREGS for the child process (r1)\n");
+ ATF_REQUIRE(ptrace(PT_SETDBREGS, child, &r1, 0) != -1);
+
+ 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_stopped(status, sigval);
+
+ printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+ printf("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ printf("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);
+
+ printf("Call GETDBREGS for the child process after execve(2)\n");
+ ATF_REQUIRE(ptrace(PT_GETDBREGS, child, &r2, 0) != -1);
+
+ printf("State of the debug registers (r2):\n");
+ for (i = 0; i < __arraycount(r2.dr); i++)
+ printf("r2[%zu]=%#lx\n", i, r2.dr[i]);
+
+ printf("Assert that (r1) and (r2) are not the same\n");
+ ATF_REQUIRE(memcmp(&r1, &r2, sizeof(r1)) != 0);
+
+ 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);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
ATF_TP_ADD_TCS(tp)
{
setvbuf(stdout, NULL, _IONBF, 0);
@@ -6759,5 +7377,12 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr6_dont_inherit_lwp);
ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr7_dont_inherit_lwp);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr0_dont_inherit_execve);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr1_dont_inherit_execve);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr2_dont_inherit_execve);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr3_dont_inherit_execve);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr6_dont_inherit_execve);
+ ATF_TP_ADD_TC_HAVE_DBREGS(tp, dbregs_dr7_dont_inherit_execve);
+
return atf_no_error();
}
