/*
* Copyright (c) 2025 Apple Computer, Inc. All rights reserved.
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* @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
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*/
#include <darwintest.h>
#include <mach/host_info.h>
#include <mach/mach_host.h>
#include <spawn.h>
#include <sys/wait.h>
#include "test_utils.h"
#define ILP32_POINTER_BYTES (4)
T_GLOBAL_META(
T_META_RADAR_COMPONENT_NAME("xnu"),
T_META_RADAR_COMPONENT_VERSION("arm"),
T_META_OWNER("jwilkey"));
T_DECL(bingrade_vm_force_arm64_32, "Test forced arm64_32 binary grading policy for VM",
T_META_RUN_CONCURRENTLY(true),
T_META_REQUIRES_SYSCTL_EQ("kern.hv_vmm_present", 1),
T_META_BOOTARGS_SET("force-arm64-32=1"),
T_META_ENABLED(TARGET_OS_WATCH),
T_META_TAG_VM_PREFERRED)
{
pid_t pid;
int status;
/* 32-bit process should succeed. */
{
char * const argv[] = {"bingrade_helper_arm32", NULL};
const int rc = posix_spawn(&pid, argv[0], NULL, NULL, argv, NULL);
T_QUIET; T_ASSERT_POSIX_ZERO(rc, "32-bit process should spawn.");
pid = waitpid(pid, &status, 0);
T_QUIET; T_ASSERT_POSIX_SUCCESS(pid, NULL);
T_QUIET; T_ASSERT_TRUE(WIFEXITED(status), NULL);
T_ASSERT_EQ(WEXITSTATUS(status), ILP32_POINTER_BYTES, "32-bit process should succeed.");
}
/* 64-bit process should be rejected. */
{
char * const argv[] = {"bingrade_helper_arm64", NULL};
const int rc = posix_spawn(NULL, argv[0], NULL, NULL, argv, NULL);
T_ASSERT_POSIX_ERROR(rc, EBADARCH, "64-bit process should be rejected.");
}
/* Fat binary should select 32-bit process. */
{
char * const argv[] = {"bingrade_helper_arm_fat", NULL};
const int rc = posix_spawn(&pid, argv[0], NULL, NULL, argv, NULL);
T_QUIET; T_ASSERT_POSIX_ZERO(rc, "Fat binary should spawn.");
pid = waitpid(pid, &status, 0);
T_QUIET; T_ASSERT_POSIX_SUCCESS(pid, NULL);
T_QUIET; T_ASSERT_TRUE(WIFEXITED(status), NULL);
T_ASSERT_EQ(WEXITSTATUS(status), ILP32_POINTER_BYTES,
"Fat binary should select 32-bit process.");
}
}
T_DECL(gestalt_vm_force_arm64_32, "Test forced arm64_32 mode host_info CPU architecture",
T_META_RUN_CONCURRENTLY(true),
T_META_REQUIRES_SYSCTL_EQ("kern.hv_vmm_present", 1),
T_META_BOOTARGS_SET("force-arm64-32=1"),
T_META_ENABLED(TARGET_OS_WATCH),
T_META_TAG_VM_PREFERRED)
{
mach_msg_type_number_t count = HOST_PREFERRED_USER_ARCH_COUNT;
host_preferred_user_arch_data_t hi;
kern_return_t kr;
kr = host_info(mach_host_self(), HOST_PREFERRED_USER_ARCH, (host_info_t)&hi, &count);
T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "host_info");
T_QUIET; T_ASSERT_EQ(count, HOST_PREFERRED_USER_ARCH_COUNT, NULL);
T_ASSERT_EQ(hi.cpu_type, CPU_TYPE_ARM64_32, NULL);
T_ASSERT_EQ(hi.cpu_subtype, CPU_SUBTYPE_ARM64_32_V8, NULL);
}