/*
* Copyright (c) 2021 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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*/
#include <darwintest.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/ptrace.h>
T_GLOBAL_META(
T_META_NAMESPACE("xnu.spawn"),
T_META_RADAR_COMPONENT_NAME("xnu"),
T_META_RADAR_COMPONENT_VERSION("spawn"),
T_META_OWNER("jainam_shah"),
T_META_RUN_CONCURRENTLY(true)
);
T_DECL(test_ptraceme, "Test that ptraced process is stopped when it execs", T_META_ASROOT(true), T_META_ENABLED(TARGET_OS_OSX), T_META_TAG_VM_PREFERRED)
{
int ret;
T_LOG("Parent %d: Calling fork()", getpid());
pid_t child_pid = fork();
if (child_pid == -1) {
T_FAIL("Fork failed with error: %d: %s", errno, strerror(errno));
} else if (child_pid == 0) {
/* Child */
T_LOG("Child %d: Calling ptrace(PT_TRACE_ME, 0, NULL, 0)", getpid());
ret = ptrace(PT_TRACE_ME, 0, NULL, 0);
T_EXPECT_POSIX_SUCCESS(ret, "ptrace PT_TRACE_ME");
T_LOG("Child %d: Calling execl(\"/bin/echo\", ...)", getpid());
execl("/bin/echo", "echo", "/bin/echo executed - this should not happen before parent has detached!", NULL);
T_FAIL("execl failed with error: %d: %s", errno, strerror(errno));
} else {
/* Parent */
T_LOG("Parent %d: Calling waitpid(%d, NULL, WUNTRACED)", getpid(), child_pid);
int child_status = 0;
ret = waitpid(child_pid, &child_status, WUNTRACED);
T_EXPECT_EQ(ret, child_pid, "Waitpid returned status for child pid");
T_EXPECT_TRUE(WIFSTOPPED(child_status),
"Parent %d: waitpid() indicates that child %d is now stopped for tracing", getpid(), child_pid);
T_LOG("Parent %d: Calling ptrace(PT_DETACH, %d, NULL, 0)", getpid(), child_pid);
ret = ptrace(PT_DETACH, child_pid, NULL, 0);
T_EXPECT_POSIX_SUCCESS(ret, "ptrace PT_DETACH");
T_LOG("Parent %d: Calling kill(%d, SIGTERM)", getpid(), child_pid);
kill(child_pid, SIGTERM);
T_LOG("Parent %d: Calling wait(NULL)\n", getpid());
wait(NULL);
T_END;
}
}