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/* * Copyright (c) 2000-2024 Apple 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, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include <darwintest.h> #include <stdint.h> #include "mocks/osfmk/unit_test_utils.h" #include "mocks/osfmk/mock_vm.h" #include <vm/vm_object_internal.h> #include <vm/vm_map_lock_internal.h> #include <vm/vm_page_internal.h> #include <vm/vm_entry_lock_internal.h> #include <vm/memory_object_internal.h> #include <kern/page_decrypt.h> #include <sys/mman.h> #include <mach/vm32_map_server.h> #include <sys/bsdtask_info.h> #include <vm/vm_fault.h> #include <vm/vm_iokit.h> #include <vm/vm_map_internal.h> #include <vm/vm_map_lock_internal.h> #include <vm/vm_protos.h> #include <vm/vm_test_utils_internal.h> #define UT_MODULE osfmk T_GLOBAL_META( T_META_NAMESPACE("xnu.unit.vm.vm_map_misc_api_tests"), T_META_RADAR_COMPONENT_NAME("xnu"), T_META_RADAR_COMPONENT_VERSION("VM"), T_META_RUN_CONCURRENTLY(true) ); static vm_map_entry_t assert_lookup_entry(vm_map_t map, mach_vm_address_t addr) { vm_map_ilk_lock(map); vm_map_entry_t entry = vm_map_lookup(map, addr); T_ASSERT_NE_PTR(entry, NULL, "expected a map entry at map %p address 0x%llx", map, addr); vm_map_ilk_unlock(map); return entry; } static __attribute__((overloadable)) vm_map_entry_t enter_obj_entry(vm_map_t map, vm_map_address_t start, vm_map_size_t size, vm_prot_t cur_prot, bool needs_copy, vm_object_t obj, vm_object_offset_t offset) { kern_return_t kr = vm_map_enter(map, &start, size, 0, VM_MAP_KERNEL_FLAGS_FIXED(), obj, offset, needs_copy, cur_prot, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); T_QUIET; T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_enter"); return assert_lookup_entry(map, start); } static __attribute__((overloadable)) vm_map_entry_t enter_obj_entry(vm_map_t map, vm_map_address_t start, vm_map_size_t size, vm_prot_t cur_prot, bool needs_copy, vm_object_t obj) { return enter_obj_entry(map, start, size, cur_prot, needs_copy, obj, 0); } static __attribute__((overloadable)) vm_map_entry_t enter_obj_entry(vm_map_t map, vm_map_address_t start, vm_map_size_t size, vm_prot_t cur_prot, bool needs_copy) { /* non NULL obj to avoid coalesce */ return enter_obj_entry(map, start, size, cur_prot, needs_copy, vm_object_allocate(size, map->serial_id)); } vm_map_address_t MAP_BASE = 0x010000000; // avoid the pmap_shared_region __enum_closed_decl(map_options_t, uint8_t, { WITH_PAGE, WITH_OBJECT, NO_OBJECT, NO_OBJECT_NOT_WRITABLE, WITH_SUBMAP, }); static vm_map_t create_map(map_options_t options, bool two_entries) { vm_map_address_t start = MAP_BASE; vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); kern_return_t kr; vm_map_kernel_flags_t vmk_flags = VM_MAP_KERNEL_FLAGS_FIXED(); vm_object_t object = VM_OBJECT_NULL; if (options == WITH_OBJECT || options == WITH_PAGE) { object = vm_object_allocate(PAGE_SIZE, map->serial_id); if (options == WITH_PAGE) { vm_page_t m = vm_page_grab_options(0); T_ASSERT_NOTNULL(m, "page"); m->vmp_busy = FALSE; vm_object_lock(object); vm_page_insert(m, object, vm_object_trunc_page(0)); vm_object_unlock(object); } } if (options == WITH_SUBMAP) { vm_map_t submap = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); submap->is_nested_map = true; submap->vmmap_sealed = VM_MAP_WILL_BE_SEALED; start = 0x180000000ULL; kr = vm_map_enter(map, &start, 0x180000000ULL, 0, VM_MAP_KERNEL_FLAGS_FIXED(.vmkf_submap = true, .vmkf_nested_pmap = true), (vm_object_t) submap, 0, false, VM_PROT_DEFAULT, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); } else { vm_prot_t prot = VM_PROT_DEFAULT; if (options == NO_OBJECT_NOT_WRITABLE) { prot = VM_PROT_READ; } kr = vm_map_enter(map, &start, PAGE_SIZE, 0, VM_MAP_KERNEL_FLAGS_FIXED(), object, 0, false, prot, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); } T_QUIET; T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_enter"); if (two_entries) { start += PAGE_SIZE; kr = vm_map_enter(map, &start, PAGE_SIZE, 0, VM_MAP_KERNEL_FLAGS_FIXED(), object, 0, false, VM_PROT_DEFAULT, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); } T_QUIET; T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_enter"); return map; } vm_page_t get_first_page(vm_map_t map, vm_map_offset_t addr) { vm_map_entry_t entry; entry = assert_lookup_entry(map, addr); vm_object_t object = VME_OBJECT(entry); vm_object_lock_shared(object); vm_page_t page = vm_page_lookup(object, 0); vm_object_unlock(object); // vm_entry_unlock_shared(map, entry); return page; } T_DECL(vm_map_sign_tests, "test vm_map_sign_tests") { /* Test vm_map_sign working */ vm_map_t map = create_map(WITH_PAGE, false); kern_return_t kr = vm_map_sign(map, MAP_BASE, MAP_BASE + PAGE_SIZE); vm_page_t page = get_first_page(map, MAP_BASE); T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_sign"); T_ASSERT_EQ((int) page->vmp_cs_validated, VMP_CS_ALL_TRUE, "Sign worked"); /* Test vm_map_sign changing bits */ page = get_first_page(map, MAP_BASE); page->vmp_busy = true; page->vmp_cs_validated = VMP_CS_ALL_FALSE; kr = vm_map_sign(map, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ(kr, KERN_FAILURE, "vm_map_sign"); T_ASSERT_EQ((int) page->vmp_cs_validated, VMP_CS_ALL_FALSE, "bits changed"); /* Test vm_map_sign failing with null page */ map = create_map(WITH_OBJECT, false); kr = vm_map_sign(map, MAP_BASE, MAP_BASE + PAGE_SIZE); page = get_first_page(map, MAP_BASE); T_ASSERT_EQ(kr, KERN_FAILURE, "vm_map_sign"); /* Test vm_map_sign failing with no obj */ map = create_map(NO_OBJECT, false); kr = vm_map_sign(map, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ(kr, KERN_INVALID_ARGUMENT, "vm_map_sign"); /* Test vm_map_sign failing with a range too large*/ map = create_map(WITH_PAGE, true); kr = vm_map_sign(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 2); page = get_first_page(map, MAP_BASE); T_ASSERT_EQ(kr, KERN_INVALID_ARGUMENT, "vm_map_sign"); T_ASSERT_EQ((int) page->vmp_cs_validated, VMP_CS_ALL_FALSE, "bits changed"); /* Test vm_map_sign failing with submap */ map = create_map(WITH_SUBMAP, false); kr = vm_map_sign(map, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ(kr, KERN_INVALID_ADDRESS, "vm_map_sign"); /* Test vm_map_sign failing with no map */ kr = vm_map_sign(VM_MAP_NULL, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ(kr, KERN_INVALID_ARGUMENT, "vm_map_sign"); /* Test vm_map_sign failing with overflow */ kr = vm_map_sign(map, MAP_BASE, MAP_BASE - PAGE_SIZE); T_ASSERT_EQ(kr, KERN_INVALID_ADDRESS, "vm_map_sign"); /* Test vm_map_sign failing with empty range */ kr = vm_map_sign(vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0) , MAP_BASE, MAP_BASE - PAGE_SIZE); T_ASSERT_EQ(kr, KERN_INVALID_ADDRESS, "vm_map_sign"); } struct pmap_remove_options_call; typedef struct pmap_remove_options_call *pmap_remove_options_call_t; extern pmap_remove_options_call_t make_pmap_remove_options_intercept( pmap_t pmap, vm_map_address_t start, vm_map_address_t end, int options); extern void _prepare_for_pmap_remove_options_call(pmap_remove_options_call_t *calls, uint32_t calls_count); extern bool verify_pmap_remove_options_intercept_calls(); #define countof(arr) (sizeof(arr) / sizeof((arr)[0])) #define prepare_for_pmap_remove_options_call(calls) _prepare_for_pmap_remove_options_call((calls), countof((calls))) T_DECL(vm_map_disconnect_page_mappings_tests, "test vm_map_disconnect_page_mappings") { vm_map_t map = create_map(WITH_OBJECT, false); prepare_for_pmap_remove_options_call((pmap_remove_options_call_t[]){make_pmap_remove_options_intercept(map->pmap, MAP_BASE, MAP_BASE + PAGE_SIZE, 0)}); int result = vm_map_disconnect_page_mappings(map, false); T_ASSERT_TRUE(verify_pmap_remove_options_intercept_calls(), "pmap remove worked"); T_ASSERT_EQ(result, 0, "no physical footprint"); map = create_map(NO_OBJECT, false); prepare_for_pmap_remove_options_call((pmap_remove_options_call_t[]){}); result = vm_map_disconnect_page_mappings(map, false); T_ASSERT_TRUE(verify_pmap_remove_options_intercept_calls(), "pmap remove worked"); T_ASSERT_EQ(result, 0, "no physical footprint"); map = create_map(WITH_OBJECT, true); pmap_remove_options_call_t first = make_pmap_remove_options_intercept(map->pmap, MAP_BASE, MAP_BASE + PAGE_SIZE, 0); pmap_remove_options_call_t second = make_pmap_remove_options_intercept(map->pmap, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2, 0); pmap_remove_options_call_t calls[] = {first, second}; prepare_for_pmap_remove_options_call(calls); result = vm_map_disconnect_page_mappings(map, false); T_ASSERT_TRUE(verify_pmap_remove_options_intercept_calls(), "pmap remove worked"); T_ASSERT_EQ(result, 0, "no physical footprint"); map = create_map(WITH_SUBMAP, false); prepare_for_pmap_remove_options_call((pmap_remove_options_call_t[]){make_pmap_remove_options_intercept(map->pmap, 0x180000000ULL, 0x180000000ULL + 0x180000000ULL, 0)}); result = vm_map_disconnect_page_mappings(map, true); T_ASSERT_TRUE(verify_pmap_remove_options_intercept_calls(), "pmap remove worked"); T_ASSERT_EQ(result, 0, "no physical footprint"); } T_DECL(vm_map_check_protection_tests, "test vm_map_check_protection") { bool success; uint64_t map_start = 0x00001000000000; uint64_t map_end = 0xfffffffff00000; vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), map_start, map_end, 0); /* empty map */ success = vm_map_check_protection(map, map_start, map_end, VM_PROT_DEFAULT, NULL); T_ASSERT_FALSE(success, "empty"); /* Size zero test, no entry */ success = vm_map_check_protection(map, map_start, map_start, VM_PROT_DEFAULT, NULL); T_ASSERT_FALSE(success, "size zero"); vm_map_entry_t vm_entry = enter_obj_entry(map, map_start, PAGE_SIZE, VM_PROT_DEFAULT, false); /* Size zero test, yes entry */ success = vm_map_check_protection(map, map_start, map_start, VM_PROT_DEFAULT, NULL); T_ASSERT_TRUE(success, "size zero with entry"); /* normal call */ success = vm_map_check_protection(map, map_start, map_start + PAGE_SIZE, VM_PROT_DEFAULT, NULL); T_ASSERT_TRUE(success, "valid call"); success = vm_map_check_protection(map, map_start, map_start + PAGE_SIZE * 2, VM_PROT_DEFAULT, NULL); T_ASSERT_FALSE(success, "partially mapped range"); vm_entry->protection = VM_PROT_READ; success = vm_map_check_protection(map, map_start, map_start + PAGE_SIZE, VM_PROT_DEFAULT, NULL); T_ASSERT_FALSE(success, "bad prots"); map = create_map(WITH_OBJECT, false); bool result = vm_map_check_protection(map, MAP_BASE, MAP_BASE + PAGE_SIZE, VM_PROT_ALL, (vm_sanitize_caller_t) 1); T_ASSERT_TRUE(!result, "vm_map_check_protection"); result = vm_map_check_protection(map, MAP_BASE, MAP_BASE + PAGE_SIZE, VM_PROT_DEFAULT, (vm_sanitize_caller_t) 1); T_ASSERT_TRUE(result, "vm_map_check_protection"); } T_DECL(vm_map_purgable_control, "test vm_map_purgable_control") { int state; vm_map_t map = create_map(WITH_SUBMAP, false); kern_return_t kr = vm_map_purgable_control(map, MAP_BASE, VM_PURGABLE_GET_STATE, &state); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "vm_map_purgable_control"); map = create_map(NO_OBJECT, false); kr = vm_map_purgable_control(map, MAP_BASE * 0x500, VM_PURGABLE_GET_STATE, &state); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "vm_map_purgable_control"); kr = vm_map_purgable_control(map, MAP_BASE, VM_PURGABLE_GET_STATE, &state); T_ASSERT_EQ_INT(kr, KERN_INVALID_ARGUMENT, "vm_map_purgable_control"); map = create_map(NO_OBJECT_NOT_WRITABLE, false); kr = vm_map_purgable_control(map, MAP_BASE, VM_PURGABLE_SET_STATE, &state); T_ASSERT_EQ_INT(kr, KERN_PROTECTION_FAILURE, "vm_map_purgable_control"); } T_DECL(vm_map_sizes, "test vm_map_sizes") { uint64_t map_end = 0xfffffffff00000; vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, map_end, 0); mach_vm_size_t size, free, largest_free; /* Test with empty map */ vm_map_sizes(map, &size, &free, &largest_free); T_ASSERT_EQ_ULLONG(size, map_end - MAP_BASE, "size"); T_ASSERT_EQ_ULLONG(free, map_end - MAP_BASE, "free"); T_ASSERT_EQ_ULLONG(largest_free, map_end - MAP_BASE, "largest free"); /* test with one entry */ vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); vm_map_sizes(map, &size, &free, &largest_free); T_ASSERT_EQ_ULLONG(size, map_end - MAP_BASE, "size"); T_ASSERT_EQ_ULLONG(free, map_end - MAP_BASE - PAGE_SIZE, "free"); T_ASSERT_EQ_ULLONG(largest_free, map_end - MAP_BASE - PAGE_SIZE, "largest free"); /* Test largest_free != free */ vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 3, MAP_BASE + PAGE_SIZE * 4); vm_map_sizes(map, &size, &free, &largest_free); T_ASSERT_EQ_ULLONG(size, map_end - MAP_BASE, "size"); T_ASSERT_EQ_ULLONG(free, map_end - MAP_BASE - PAGE_SIZE * 2, "free"); T_ASSERT_EQ_ULLONG(largest_free, map_end - MAP_BASE - PAGE_SIZE * 4, "largest free"); /* null map */ vm_map_sizes(VM_MAP_NULL, &size, &free, &largest_free); T_ASSERT_EQ_ULLONG(size, 0ULL, "size"); T_ASSERT_EQ_ULLONG(free, 0ULL, "free"); T_ASSERT_EQ_ULLONG(largest_free, 0ULL, "largest free"); } T_DECL(vm_map_raise_min_offset, "test vm_map_raise_min_offset") { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffffff, 0); kern_return_t kr = vm_map_raise_min_offset(map, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_raise_min_offset"); T_ASSERT_EQ_ULLONG(map->min_offset, MAP_BASE + PAGE_SIZE, "min_offset"); /* Try moving it back */ kr = vm_map_raise_min_offset(map, MAP_BASE); T_ASSERT_NE_INT(kr, KERN_SUCCESS, "vm_map_raise_min_offset"); T_ASSERT_EQ_ULLONG(map->min_offset, MAP_BASE + PAGE_SIZE, "min_offset"); /* Try past max offset */ kr = vm_map_raise_min_offset(map, 0xfffffffffffff + 1); T_ASSERT_NE_INT(kr, KERN_SUCCESS, "vm_map_raise_min_offset"); T_ASSERT_EQ_ULLONG(map->min_offset, MAP_BASE + PAGE_SIZE, "min_offset"); /* try past an entry */ vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); kr = vm_map_raise_min_offset(map, MAP_BASE + PAGE_SIZE * 2); T_ASSERT_NE_INT(kr, KERN_SUCCESS, "vm_map_raise_min_offset"); T_ASSERT_EQ_ULLONG(map->min_offset, MAP_BASE + PAGE_SIZE, "min_offset"); } static void check_tpro(vm_map_entry_t entry) { T_ASSERT_EQ_INT((bool) entry->vme_permanent, true, "Permanent set"); T_ASSERT_EQ_INT((bool) entry->used_for_tpro, true, "tpro set"); T_ASSERT_EQ_INT((int) entry->protection, VM_PROT_READ, "prot set"); } static void check_not_tpro(vm_map_entry_t entry) { T_ASSERT_EQ_INT((bool) entry->vme_permanent, false, "Permanent set"); T_ASSERT_EQ_INT((bool) entry->used_for_tpro, false, "tpro set"); T_ASSERT_EQ_INT((int) entry->protection, VM_PROT_DEFAULT, "prot set"); } static void init_entry_for_tpro(vm_map_entry_t entry) { entry->vme_permanent = false; entry->max_protection = VM_PROT_DEFAULT; entry->protection = VM_PROT_DEFAULT; entry->used_for_tpro = false; } T_DECL(vm_map_set_tpro_range, "vm_map_set_tpro_range") { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffffff, 0); vm_map_set_tpro(map); /* empty range */ bool result = vm_map_set_tpro_range(map, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ_INT(result, false, "vm_map_set_tpro_range"); /* range with two entry */ vm_map_entry_t entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); vm_map_entry_t entry2 = vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); init_entry_for_tpro(entry); init_entry_for_tpro(entry2); result = vm_map_set_tpro_range(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 2); T_ASSERT_EQ_INT(result, true, "vm_map_set_tpro_range"); check_tpro(entry); check_tpro(entry2); /* test with submap in range */ entry->is_sub_map = true; init_entry_for_tpro(entry); init_entry_for_tpro(entry2); result = vm_map_set_tpro_range(map, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ_INT(result, false, "vm_map_set_tpro_range"); check_not_tpro(entry); check_not_tpro(entry2); /* test with hole */ entry->is_sub_map = false; vm_map_entry_t entry3 = vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 3, MAP_BASE + PAGE_SIZE * 4); result = vm_map_set_tpro_range(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 4); T_ASSERT_EQ_INT(result, false, "vm_map_set_tpro_range"); check_tpro(entry); check_tpro(entry2); check_not_tpro(entry3); /* test null map */ result = vm_map_set_tpro_range(VM_MAP_NULL, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ_INT(result, false, "vm_map_set_tpro_range"); } #if VM_SCAN_FOR_SHADOW_CHAIN T_DECL(vm_map_shadow_max, "test vm_map_shadow_max") { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffffff, 0); /* null map */ int result = vm_map_shadow_max(VM_MAP_NULL); T_ASSERT_EQ_INT(result, 0, "null map"); /* empty map */ result = vm_map_shadow_max(map); T_ASSERT_EQ_INT(result, 0, "empty map"); vm_map_entry_t entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); vm_map_entry_t entry2 = vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); /* null objs */ result = vm_map_shadow_max(map); T_ASSERT_EQ_INT(result, 0, "null obj"); /* submap too */ vm_map_entry_t entry3 = vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 2, MAP_BASE + PAGE_SIZE * 3); entry3->is_sub_map = true; vm_map_t submap = vm_map_create_options(kernel_pmap, MAP_BASE, 0xfffffffffffff, 0); assert(vm_entry_try_lock_exclusive(entry3)); VME_SUBMAP_SET(entry3, submap); vm_entry_unlock_exclusive(map, entry3); result = vm_map_shadow_max(map); T_ASSERT_EQ_INT(result, 0, "with submap"); vm_object_t obj = vm_object_allocate(PAGE_SIZE, map->serial_id); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, obj, false, 0); vm_entry_unlock_exclusive(map, entry); /* with an obj */ result = vm_map_shadow_max(map); T_ASSERT_EQ_INT(result, 0, "no shadow"); /* with obj with shadow depth 1 */ obj->shadow = vm_object_allocate(PAGE_SIZE, map->serial_id); result = vm_map_shadow_max(map); T_ASSERT_EQ_INT(result, 1, "depth 1"); /* and with obj of shadow depth 2 */ vm_object_t obj2 = vm_object_allocate(PAGE_SIZE, map->serial_id); assert(vm_entry_try_lock_exclusive(entry2)); VME_OBJECT_SET(entry2, obj2, false, 0); vm_entry_unlock_exclusive(map, entry2); obj2->shadow = vm_object_allocate(PAGE_SIZE, map->serial_id); obj2->shadow->shadow = vm_object_allocate(PAGE_SIZE, map->serial_id); result = vm_map_shadow_max(map); T_ASSERT_EQ_INT(result, 2, "depth 2"); } #endif /* VM_SCAN_FOR_SHADOW_CHAIN */ T_DECL(vm_map_entry_has_device_pager, "test vm_map_entry_has_device_pager") { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, MAP_BASE + PAGE_SIZE * 20, 0); /* from range_configure */ /* NULL MAP*/ bool result = vm_map_entry_has_device_pager(VM_MAP_NULL, MAP_BASE); T_ASSERT_EQ_INT(result, false, "null map"); /* no entry */ result = vm_map_entry_has_device_pager(map, MAP_BASE); T_ASSERT_EQ_INT(result, false, "no entry"); vm_map_entry_t entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); /* no obj */ result = vm_map_entry_has_device_pager(map, MAP_BASE); T_ASSERT_EQ_INT(result, false, "no obj"); /* no pager */ vm_object_t obj = vm_object_allocate(PAGE_SIZE, map->serial_id); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, obj, false, 0); vm_entry_unlock_exclusive(map, entry); result = vm_map_entry_has_device_pager(map, MAP_BASE); T_ASSERT_EQ_INT(result, false, "no pager"); /* wrong pager */ vm_object_lock(obj); vm_object_compressor_pager_create(obj); vm_object_unlock(obj); result = vm_map_entry_has_device_pager(map, MAP_BASE); T_ASSERT_EQ_INT(result, false, "wrong pager"); /* And right pager*/ vm_object_t device_pager_obj = memory_object_to_vm_object(device_pager_setup((memory_object_t) NULL, (uintptr_t) NULL, PAGE_SIZE, 0)); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, device_pager_obj, false, 0); vm_entry_unlock_exclusive(map, entry); result = vm_map_entry_has_device_pager(map, MAP_BASE); T_ASSERT_EQ_INT(result, true, "device pager"); } T_DECL(vm_map_set_cache_attr, "test vm_map_set_cache_attr") { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffff0000, 0); kern_return_t kr; /* empty map */ kr = vm_map_set_cache_attr(map, MAP_BASE); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "empty map"); vm_map_entry_t entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); /* null objs */ kr = vm_map_set_cache_attr(map, MAP_BASE); T_ASSERT_EQ_INT(kr, KERN_INVALID_ARGUMENT, "null obj"); /* submap test */ vm_map_entry_t entry2 = vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); entry2->is_sub_map = true; vm_map_t submap = vm_map_create_options(kernel_pmap, MAP_BASE, 0xfffffffffffff, 0); assert(vm_entry_try_lock_exclusive(entry2)); VME_SUBMAP_SET(entry2, submap); vm_entry_unlock_exclusive(map, entry2); kr = vm_map_set_cache_attr(map, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ_INT(kr, KERN_INVALID_ARGUMENT, "with submap"); vm_object_t obj = vm_object_allocate(PAGE_SIZE, map->serial_id); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, obj, false, 0); vm_entry_unlock_exclusive(map, entry); /* with an obj */ obj->set_cache_attr = false; kr = vm_map_set_cache_attr(map, MAP_BASE); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_set_cache_attr"); T_ASSERT_EQ_INT((int)obj->set_cache_attr, true, "vm_map_set_cache_attr"); } T_DECL(vm_map_apple_protected, "test vm_map_apple_protected") { struct pager_crypt_info crypt_info = {}; vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffff0000, 0); kern_return_t kr; /* empty map */ kr = vm_map_apple_protected(map, MAP_BASE, MAP_BASE + PAGE_SIZE, 0, &crypt_info, CRYPTID_APP_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "empty map"); vm_map_entry_t entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ(entry->vme_start, (vm_map_offset_t)MAP_BASE, "entry"); /* null objs */ kr = vm_map_apple_protected(map, MAP_BASE, MAP_BASE + PAGE_SIZE, 0, &crypt_info, CRYPTID_APP_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_INVALID_ARGUMENT, "null obj"); T_ASSERT_EQ_PTR(entry, assert_lookup_entry(map, MAP_BASE), "entry should not change"); /* overflowing values */ kr = vm_map_apple_protected(map, MAP_BASE, MAP_BASE - PAGE_SIZE, 0, &crypt_info, CRYPTID_APP_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "overflow"); T_ASSERT_EQ_PTR(entry, assert_lookup_entry(map, MAP_BASE), "entry should not change"); vm_map_entry_t entry2 = vm_test_add_map_entry(map, 0x180000000ULL, 0x180000000ULL * 2); entry2->is_sub_map = true; vm_map_t submap = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); submap->is_nested_map = true; assert(vm_entry_try_lock_exclusive(entry2)); VME_SUBMAP_SET(entry2, submap); vm_entry_unlock_exclusive(map, entry2); /* submap */ kr = vm_map_apple_protected(map, 0x180000000ULL, 0x180000000ULL + PAGE_SIZE * 2, 0, &crypt_info, CRYPTID_APP_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_INVALID_ARGUMENT, "with submap"); T_ASSERT_EQ_PTR(entry, assert_lookup_entry(map, MAP_BASE), "entry should not change"); vm_object_t obj = vm_object_allocate(PAGE_SIZE, map->serial_id); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, obj, false, 0); vm_entry_unlock_exclusive(map, entry); /* with obj */ kr = vm_map_apple_protected(map, MAP_BASE, MAP_BASE + PAGE_SIZE, 0, &crypt_info, CRYPTID_APP_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_INVALID_ARGUMENT, "with obj bad perms"); T_ASSERT_EQ_PTR(entry, assert_lookup_entry(map, MAP_BASE), "entry should not change"); /* add exec, strip write, try again */ entry->protection |= VM_PROT_EXECUTE; entry->protection &= ~VM_PROT_WRITE; kr = vm_map_apple_protected(map, MAP_BASE, MAP_BASE + PAGE_SIZE, 0, &crypt_info, CRYPTID_APP_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_apple_protected valid setup"); { vm_map_entry_t new_entry = assert_lookup_entry(map, MAP_BASE); T_ASSERT_NE_PTR(entry, new_entry, "entry should change"); entry = new_entry; } /* strip exec, try model */ entry->protection &= ~VM_PROT_EXECUTE; kr = vm_map_apple_protected(map, MAP_BASE, MAP_BASE + PAGE_SIZE, 0, &crypt_info, CRYPTID_MODEL_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_apple_protected valid setup"); { vm_map_entry_t new_entry = assert_lookup_entry(map, MAP_BASE); T_ASSERT_NE_PTR(entry, new_entry, "entry should change"); entry = new_entry; } /* test clipping */ map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffff0000, 0); entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 3); obj = vm_object_allocate(PAGE_SIZE * 3, map->serial_id); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, obj, false, 0); vm_entry_unlock_exclusive(map, entry); kr = vm_map_apple_protected(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2, 0, &crypt_info, CRYPTID_MODEL_ENCRYPTION); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_apple_protected valid setup"); entry = assert_lookup_entry(map, MAP_BASE + PAGE_SIZE); T_ASSERT_EQ_ULLONG(entry->vme_start, MAP_BASE + PAGE_SIZE, "clipped start"); T_ASSERT_EQ_ULLONG(entry->vme_end, MAP_BASE + PAGE_SIZE * 2, "clipped end"); } #ifdef HAS_MTE extern kern_return_t vm_map_page_tags_get(vm_map_t map, vm_address_t page_addr, uint64_t *buf, vm_size_t size); T_DECL(vm_map_page_tags_get, "test vm_map_page_tags_get") { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffff0000, 0); kern_return_t kr; uint64_t buf[64]; /* empty map */ kr = vm_map_page_tags_get(map, MAP_BASE, buf, sizeof(buf)); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "empty map"); vm_map_entry_t entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); /* null objs */ kr = vm_map_page_tags_get(map, MAP_BASE, buf, sizeof(buf)); T_ASSERT_EQ_INT(kr, KERN_FAILURE, "null obj"); /* submap test */ vm_map_entry_t entry2 = vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); entry2->is_sub_map = true; vm_map_t submap = vm_map_create_options(kernel_pmap, MAP_BASE, 0xfffffffffffff, 0); assert(vm_entry_try_lock_exclusive(entry2)); VME_SUBMAP_SET(entry2, submap); vm_entry_unlock_exclusive(map, entry2); kr = vm_map_page_tags_get(map, MAP_BASE, buf, sizeof(buf)); T_ASSERT_EQ_INT(kr, KERN_FAILURE, "with submap"); vm_object_t obj = vm_object_allocate(PAGE_SIZE, map->serial_id); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, obj, false, 0); vm_entry_unlock_exclusive(map, entry); /* with an obj */ kr = vm_map_page_tags_get(map, MAP_BASE, buf, sizeof(buf)); T_ASSERT_EQ_INT(kr, KERN_FAILURE, "vm_map_set_cache_attr"); /* with a mte obj */ obj->wimg_bits = VM_WIMG_MTE; kr = vm_map_page_tags_get(map, MAP_BASE, buf, sizeof(buf)); T_ASSERT_EQ_INT(kr, KERN_FAILURE, "no page"); /* grab a page, mark it wired, fill the tag buffer */ vm_page_t page = vm_page_grab_options(VM_PAGE_GRAB_MTE); vm_object_lock(obj); page->vmp_wire_count++; vm_page_insert(page, obj, 0); vm_page_wakeup_done(obj, page); vm_object_unlock(obj); uint64_t written_tags[64]; written_tags[0] = 1; ppnum_t page_phys = VM_PAGE_GET_PHYS_PAGE(page); /* fill the buffer with the page's tags */ vm_address_t vcur = phystokv(ptoa(page_phys)); mte_bulk_write_tags((caddr_t)vcur, PAGE_SIZE, (mte_bulk_taglist_t *)written_tags, sizeof(written_tags)); /* with a page */ kr = vm_map_page_tags_get(map, MAP_BASE, buf, sizeof(buf)); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "no page"); page->vmp_wire_count--; T_ASSERT_EQ_INT(0, memcmp(&buf, &written_tags, sizeof(buf)), "memcmp"); } #endif #ifdef CONFIG_FREEZE #include <vm/vm_pageout.h> T_DECL(vm_map_freeze, "test vm_map_freeze") { uint32_t purge_count, wired_count, clean_count, dirty_count, dirty_budget = 100, shared_count; int error; vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, 0xfffffffffff0000, 0); kern_return_t kr; current_task()->map = map; vm_config.freezer_swap_is_active = true; /* test empty map */ kr = vm_map_freeze(current_task(), &purge_count, &wired_count, &clean_count, &dirty_count, dirty_budget, &shared_count, &error, FREEZE_NONE); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_freeze"); vm_map_entry_t entry = vm_test_add_map_entry(map, MAP_BASE, MAP_BASE + PAGE_SIZE); /* test no object */ kr = vm_map_freeze(current_task(), &purge_count, &wired_count, &clean_count, &dirty_count, dirty_budget, &shared_count, &error, FREEZE_NONE); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_freeze"); /* Test with a page */ vm_object_t obj = vm_object_allocate(PAGE_SIZE, map->serial_id); assert(vm_entry_try_lock_exclusive(entry)); VME_OBJECT_SET(entry, obj, false, 0); vm_entry_unlock_exclusive(map, entry); vm_page_t page = vm_page_grab_options(0); vm_object_lock(obj); vm_page_insert(page, obj, vm_object_trunc_page(0)); vm_object_unlock(obj); kr = vm_map_freeze(current_task(), &purge_count, &wired_count, &clean_count, &dirty_count, dirty_budget, &shared_count, &error, FREEZE_NONE); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_freeze"); vm_object_lock_shared(obj); T_ASSERT_TRUE(vm_page_queue_empty(&obj->memq), "pages removed"); vm_object_unlock(obj); /* test with shared object and page */ vm_object_reference(obj); page = vm_page_grab_options(0); vm_object_lock(obj); vm_page_insert(page, obj, vm_object_trunc_page(0)); vm_object_unlock(obj); kr = vm_map_freeze(current_task(), &purge_count, &wired_count, &clean_count, &dirty_count, dirty_budget, &shared_count, &error, FREEZE_NONE); T_ASSERT_EQ_INT(kr, KERN_FAILURE, "vm_map_freeze"); vm_object_lock_shared(obj); T_ASSERT_TRUE(!vm_page_queue_empty(&obj->memq), "pages not removed"); vm_object_unlock(obj); /* and test eval only doesn't do anything */ vm_object_deallocate(obj); kr = vm_map_freeze(current_task(), &purge_count, &wired_count, &clean_count, &dirty_count, dirty_budget, &shared_count, &error, FREEZE_EVAL_ONLY); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_freeze"); vm_object_lock_shared(obj); T_ASSERT_TRUE(!vm_page_queue_empty(&obj->memq), "pages not removed"); vm_object_unlock(obj); } #endif /* CONFIG_FREEZE */ static vm_map_t setup_vm_map_region_recurse_64_submap_map() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); kern_return_t kr; vm_map_kernel_flags_t vmk_flags = VM_MAP_KERNEL_FLAGS_FIXED(); vm_object_t object = VM_OBJECT_NULL; vm_map_address_t start = MAP_BASE; /* MAP_BASE object */ kr = vm_map_enter(map, &start, PAGE_SIZE, 0, VM_MAP_KERNEL_FLAGS_FIXED(), VM_OBJECT_NULL, 0, false, VM_PROT_DEFAULT, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); T_QUIET; T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_enter"); /* 0x180000000ULL submap */ vm_map_t submap = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); submap->is_nested_map = true; start = 0x180000000ULL; submap->vmmap_sealed = VM_MAP_WILL_BE_SEALED; kr = vm_map_enter(map, &start, 0x180000000ULL, 0, VM_MAP_KERNEL_FLAGS_FIXED(.vmkf_submap = true, .vmkf_nested_pmap = true), (vm_object_t) submap, 0, false, VM_PROT_DEFAULT, VM_PROT_DEFAULT, VM_INHERIT_SHARE); T_QUIET; T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_enter"); /* Entry at 0 of submap */ start = 0; kr = vm_map_enter(submap, &start, PAGE_SIZE, 0, VM_MAP_KERNEL_FLAGS_FIXED(), VM_OBJECT_NULL, 0, false, VM_PROT_DEFAULT, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); T_QUIET; T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_enter"); /* Entry at PAGE_SIZE * 2 of submap */ start = PAGE_SIZE * 2; kr = vm_map_enter(submap, &start, PAGE_SIZE * 2, 0, VM_MAP_KERNEL_FLAGS_FIXED(), VM_OBJECT_NULL, 0, false, VM_PROT_DEFAULT, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); T_QUIET; T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_enter"); vm_map_seal(submap, true); return map; } /* test we get the proper share_mode from region recurse */ static void vm_map_region_recurse_64_share_tests() { vm_map_t map = create_map(WITH_OBJECT, false); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 3, MAP_BASE + PAGE_SIZE * 4); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 5, MAP_BASE + PAGE_SIZE * 15); vm_map_entry_t entry; struct vm_region_submap_info_64 submap_info; vm_map_address_t addr = MAP_BASE; vm_map_size_t size; natural_t depth = 1; mach_msg_type_number_t count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; vm_object_t obj; kern_return_t kr; entry = assert_lookup_entry(map, addr); obj = VME_OBJECT(entry); /* Take one obj ref outside of map */ vm_object_reference(obj); vm_object_lock(obj); obj->has_been_shared_permanently = true; /* Mark it has been shared, but never clipped */ vm_object_unlock(obj); kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); T_ASSERT_EQ_INT(submap_info.share_mode, SM_SHARED, "Should be shared"); /* And mark it clipped */ vm_object_lock(obj); obj->has_been_clipped = true; vm_object_unlock(obj); kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); T_ASSERT_EQ_INT(submap_info.share_mode, SM_SHARED_ALIASED, "Should be shared and aliased"); /* And unmark it shared */ vm_object_lock(obj); obj->has_been_shared_permanently = false; vm_object_unlock(obj); kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); T_ASSERT_EQ_INT(submap_info.share_mode, SM_PRIVATE_ALIASED, "Should be private aliased"); } /* test the short info flavor of vm_map_region_recurse*/ static void vm_map_region_recurse_64_short_info_tests() { vm_map_t map = setup_vm_map_region_recurse_64_submap_map(); /* Quick test to make sure short_info isn't completely broken */ struct vm_region_submap_short_info_64 submap_info; vm_map_address_t addr = MAP_BASE; vm_map_size_t size; natural_t depth = 1; mach_msg_type_number_t count = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64; kern_return_t kr = vm_map_region_recurse_64(map, &addr, &size, &depth, (vm_region_submap_info_64_t) &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); } #include <vm/vm_iokit.h> #include <kern/ledger.h> static void init_task_with_ledgers(task_t new_task) { task_objq_lock_init(new_task); lck_mtx_init(&new_task->lock, &task_lck_grp, &task_lck_attr); queue_init(&new_task->task_objq); task_t ktask = kernel_task; kernel_task = NULL; init_task_ledgers(); current_task()->ledger = ledger_instantiate(&task_ledger_template); kernel_task = ktask; } static vm_map_t create_vm_map_with_ledger_tagged_obj( mach_vm_address_t addr, vm_object_t obj, mach_vm_size_t mapping_size) { /* Make a map, add the object */ pmap_t pmap = pmap_create_options(current_task()->ledger, 0, PMAP_CREATE_64BIT); vm_map_t map = vm_map_create_options(pmap, 0, 0xffff00000, 0); /* smaller map so we can test footprint feature */ T_ASSERT_EQ_PTR(current_task()->ledger, map->pmap->ledger, "pmap"); /* And create an object that will be billed in the ledger */ vm_object_lock(obj); obj->copy_strategy = MEMORY_OBJECT_COPY_NONE; kern_return_t kr = vm_object_ownership_change( obj, VM_LEDGER_TAG_DEFAULT, current_task(), /* new owner */ 0, FALSE); /* task_objq locked? */ vm_object_unlock(obj); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_object_ownership_change"); kr = vm_map_enter(map, &addr, mapping_size, 0, VM_MAP_KERNEL_FLAGS_FIXED(), obj, 0, false, VM_PROT_DEFAULT, VM_PROT_DEFAULT, VM_INHERIT_DEFAULT); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "mach_vm_map"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); return map; } static void insert_page_into_obj_to_increase_phys_footprint(vm_object_t obj) { /* Insert a page, so we can increase the physical footprint */ vm_page_t m = vm_page_grab_options(0); T_ASSERT_NOTNULL(m, "page"); vm_object_lock(obj); obj->purgable = VM_PURGABLE_VOLATILE; vm_page_insert(m, obj, vm_object_trunc_page(0)); vm_page_lockspin_queues(); vm_page_wire(m, VM_KERN_MEMORY_OSFMK, false); vm_page_unlock_queues(); vm_object_unlock(obj); } /* * Test to see if the proper thing is returned when there is a physical footprint * and task_region_footprint is true. * It should be a "fake entry" after the last entry in the map */ static void vm_map_region_recurse_64_physical_footprint_tests() { kern_return_t kr; mach_vm_size_t size; ipc_port_t mem_entry; mach_vm_address_t addr = MAP_BASE; /* Setup the task/ledger */ init_task_with_ledgers(current_task()); task_self_region_footprint_set(true); /* Make a map, add the object */ vm_object_t obj = vm_object_allocate(PAGE_SIZE * 2, VM_MAP_SERIAL_NONE); vm_map_t map = create_vm_map_with_ledger_tagged_obj(addr, obj, PAGE_SIZE); /* Check simple case vm region works */ struct vm_region_submap_info_64 submap_info; natural_t depth = 1; mach_msg_type_number_t count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; /* first entry */ kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* Check vm_region's fake region. We have no footprint yet, so this should fail */ addr = MAP_BASE + PAGE_SIZE; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "vm_map_region_recurse_64"); insert_page_into_obj_to_increase_phys_footprint(obj); /* And check the physical footprint actually accounts for the page we added */ kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE + PAGE_SIZE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); } /* * Test region recurse on a map with a submap. * Make sure the address/depth work properly */ static void vm_map_region_recurse_64_submap_tests() { vm_map_t map = setup_vm_map_region_recurse_64_submap_map(); struct vm_region_submap_info_64 submap_info; vm_map_address_t addr = MAP_BASE; vm_map_size_t size; natural_t depth = 1; mach_msg_type_number_t count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; /* first entry */ kern_return_t kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* first entry again, addr in the entry */ addr = MAP_BASE + 1; depth = 1; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* Test we get the submap entry with a depth = 0, addr before start */ addr = MAP_BASE + PAGE_SIZE; depth = 0; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) 0x180000000ULL, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* Test we get the submap entry with a depth = 0, addr at start */ addr = 0x180000000ULL; depth = 0; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) 0x180000000ULL, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* Test we get the submap entry with a depth = 0, addr in entry */ addr = 0x190000000ULL; depth = 0; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) 0x180000000ULL, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* And now the with depth != 0 */ /* addr before entry */ addr = MAP_BASE + PAGE_SIZE + 1; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 1, "depth correct"); /* Addr at start */ addr = 0x180000000ULL; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 1, "depth correct"); /* Addr in entry */ addr = 0x180000001ULL; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 1, "depth correct"); /* Addr in auto inserted hole filling gap in sealed submap */ addr = 0x180000000ULL + PAGE_SIZE; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL + PAGE_SIZE * 1, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 1, "depth correct"); /* Addr at second entry in submap */ addr = 0x180000000ULL + PAGE_SIZE * 2; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL + PAGE_SIZE * 2, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE * 2, "size correct"); T_ASSERT_EQ_INT(depth, 1, "depth correct"); /* Addr at gap at the end */ addr = 0x180000000ULL + PAGE_SIZE * 4; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL + PAGE_SIZE * 4, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) 0x17fff0000, "size correct"); T_ASSERT_EQ_INT(depth, 1, "depth correct"); /* Addr still in gap at the end */ addr = 0x190000000ULL; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, 0x180000000ULL + PAGE_SIZE * 4, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) 0x17fff0000, "size correct"); T_ASSERT_EQ_INT(depth, 1, "depth correct"); /* Addr after the end of everything */ addr = 0x180000000ULL * 2; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "vm_map_region_recurse_64"); /* then test after anything (depth=0)*/ addr = 0x180000000ULL * 2; depth = 0; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "vm_map_region_recurse_64"); } /* * Check region recurse gives the right addr/size/depth for various calls * on a basic map. The map includes a gap from MAP_BASE + PAGE_SIZE * 2 to * MAP_BASE + PAGE_SIZE * 3 and PAGE_SIZE*4, PAGE_SIZE*5 */ static void vm_map_region_recurse_64_basic_map_tests() { vm_map_t map = create_map(NO_OBJECT, false); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 3, MAP_BASE + PAGE_SIZE * 4); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 5, MAP_BASE + PAGE_SIZE * 15); struct vm_region_submap_info_64 submap_info; vm_map_address_t addr = MAP_BASE; vm_map_size_t size; natural_t depth = 1; mach_msg_type_number_t count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; /* first entry, addr at start */ kern_return_t kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* first entry again, addr in the entry */ addr = MAP_BASE + 1; depth = 1; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* first entry again, addr near the end of the entry */ addr = MAP_BASE + PAGE_SIZE - 1; depth = 1; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* second entry, addr at start */ addr = MAP_BASE + PAGE_SIZE; depth = 1; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE + PAGE_SIZE, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* third entry , checking the gap is handled correctly */ addr = MAP_BASE + PAGE_SIZE * 2; depth = 1; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE + PAGE_SIZE * 3, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* fourth entry, checking the unusual size is handled correctly */ addr = MAP_BASE + PAGE_SIZE * 4; depth = 1; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "vm_map_region_recurse_64"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE + PAGE_SIZE * 5, "addr correct"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE * 10, "size correct"); T_ASSERT_EQ_INT(depth, 0, "depth correct"); /* then test after anything */ addr = MAP_BASE + PAGE_SIZE * 15; depth = 100; count = VM_REGION_SUBMAP_INFO_V2_COUNT_64; kr = vm_map_region_recurse_64(map, &addr, &size, &depth, &submap_info, &count); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "vm_map_region_recurse_64"); } T_DECL(vm_map_region_recurse, "test vm_map_region_recurse") { vm_map_region_recurse_64_basic_map_tests(); vm_map_region_recurse_64_submap_tests(); vm_map_region_recurse_64_share_tests(); vm_map_region_recurse_64_short_info_tests(); vm_map_region_recurse_64_physical_footprint_tests(); } static void basic_checker(void * data, vm_prot_t prot) { vm_region_basic_info_t basic = (vm_region_basic_info_t) data; T_ASSERT_EQ_INT(basic->protection, prot, "protection"); } static void basic64_checker(void * data, vm_prot_t prot) { vm_region_basic_info_64_t basic = (vm_region_basic_info_64_t)data; T_ASSERT_EQ_INT(basic->protection, prot, "protection"); } static void extended_checker(void * data, vm_prot_t prot) { vm_region_extended_info_t extended = (vm_region_extended_info_t) data; T_ASSERT_EQ_INT(extended->protection, prot, "protection"); T_ASSERT_EQ_INT(extended->share_mode, SM_EMPTY, "share mode"); } static void extended_checker__legacy(void * data, vm_prot_t prot) { vm_region_extended_info_t extended = (vm_region_extended_info_t) data; T_ASSERT_EQ_INT(extended->protection, prot, "protection"); T_ASSERT_EQ_INT(extended->share_mode, SM_EMPTY, "share mode"); } static void top_checker(void * data, vm_prot_t prot) { vm_region_top_info_t top = (vm_region_top_info_t) data; T_ASSERT_EQ_INT(top->shared_pages_resident, 0, "pages resident"); T_ASSERT_EQ_INT(top->share_mode, SM_EMPTY, "share mode"); } /* * Run a variety of tests, checking the address and size are always as expected * Additionally a checker can be supplied to verify the protection * (and any other flavor specific attributes are correct) */ static void run_vm_region_tests( vm_map_t map, void * type, void (*checker)(void *, vm_prot_t), vm_region_flavor_t flavor, int count_expected) { mach_vm_size_t size; mach_vm_address_t addr; kern_return_t kr; mach_msg_type_number_t count = count_expected; addr = MAP_BASE; kr = vm_map_region(map, &addr, &size, flavor, (vm_region_info_t) type, &count, NULL); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "region "); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "region addr"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size"); checker(type, VM_PROT_READ); addr += 1; kr = vm_map_region(map, &addr, &size, flavor, (vm_region_info_t) type, &count, NULL); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "region (VM_REGION_BASIC_INFO)"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE, "region (VM_REGION_BASIC_INFO) addr"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size"); checker(type, VM_PROT_READ); addr += PAGE_SIZE; kr = vm_map_region(map, &addr, &size, flavor, (vm_region_info_t) type, &count, NULL); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "region (VM_REGION_BASIC_INFO)"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE + PAGE_SIZE, "region (VM_REGION_BASIC_INFO) addr"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE, "size"); checker(type, VM_PROT_DEFAULT); addr = MAP_BASE + PAGE_SIZE * 5; kr = vm_map_region(map, &addr, &size, flavor, (vm_region_info_t) type, &count, NULL); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "region (VM_REGION_BASIC_INFO)"); T_ASSERT_EQ_ULLONG(addr, MAP_BASE + PAGE_SIZE * 3, "region (VM_REGION_BASIC_INFO) addr"); T_ASSERT_EQ_ULLONG(size, (unsigned long long) PAGE_SIZE * 12, "size"); checker(type, VM_PROT_DEFAULT); } T_DECL(vm_map_region, "test vm_map_region") { vm_map_t map = create_map(NO_OBJECT_NOT_WRITABLE, false); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 2); vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 3, MAP_BASE + PAGE_SIZE * 15); struct vm_region_basic_info basic; run_vm_region_tests(map, &basic, basic_checker, VM_REGION_BASIC_INFO, VM_REGION_BASIC_INFO_COUNT); struct vm_region_basic_info_64 basic64; run_vm_region_tests(map, &basic64, basic64_checker, VM_REGION_BASIC_INFO_64, VM_REGION_BASIC_INFO_COUNT_64); struct vm_region_extended_info extended; run_vm_region_tests(map, &extended, extended_checker, VM_REGION_EXTENDED_INFO, VM_REGION_EXTENDED_INFO_COUNT); struct vm_region_extended_info__legacy extended_legacy; run_vm_region_tests(map, &extended, extended_checker__legacy, VM_REGION_EXTENDED_INFO__legacy, VM_REGION_EXTENDED_INFO_COUNT__legacy); struct vm_region_top_info top; run_vm_region_tests(map, &top, top_checker, VM_REGION_TOP_INFO, VM_REGION_TOP_INFO_COUNT); } static vm_page_info_basic_t call_vm_map_page_range_info_internal( vm_map_t map, mach_vm_address_t start, mach_vm_address_t end, kern_return_t expected_kr) { uint64_t num_pages = end - start; vm_map_size_t info_size = num_pages * sizeof(vm_page_info_basic_data_t); void * info = kalloc_data(info_size, Z_WAITOK); mach_msg_type_number_t count = VM_PAGE_INFO_BASIC_COUNT; kern_return_t kr = vm_map_page_range_info_internal(map, start, end, vm_map_page_shift(map), VM_PAGE_INFO_BASIC, info, &count); T_ASSERT_EQ_INT(kr, expected_kr, "vm_map_page_range_info_internal"); return (vm_page_info_basic_t)info; } static void check_vm_page_info_basic_t( vm_page_info_basic_t info, int ref_count, int depth, int disposition, mach_vm_offset_t offset) { T_QUIET; T_ASSERT_EQ_INT(info->ref_count, ref_count, "Ref count"); T_QUIET; T_ASSERT_EQ_ULLONG(info->offset, offset, "offset"); T_QUIET; T_ASSERT_EQ_INT(info->depth, depth, "depth"); T_QUIET; T_ASSERT_EQ_INT(info->disposition, disposition, "disposition"); } /* Check to make sure the physical footprint option works properly */ static void test_vm_map_page_range_info_internal_footprint() { vm_object_t obj = vm_object_allocate(PAGE_SIZE * 2, VM_MAP_SERIAL_NONE); init_task_with_ledgers(current_task()); task_self_region_footprint_set(true); vm_map_t map = create_vm_map_with_ledger_tagged_obj(MAP_BASE, obj, PAGE_SIZE); kern_return_t kr; /* Basic test to make sure simple calls work */ vm_page_info_basic_t info = call_vm_map_page_range_info_internal(map, MAP_BASE, MAP_BASE + PAGE_SIZE, KERN_SUCCESS); T_ASSERT_NE_PTR(NULL, info, "call_vm_map_page_range_info_internal"); check_vm_page_info_basic_t(info, 1, 0, 0, 0); /* Check the fake region. We have no footprint yet, but it assumes any calls are valid and returns info for it. */ info = call_vm_map_page_range_info_internal(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 3, KERN_SUCCESS); T_ASSERT_NE_PTR(NULL, info, "call_vm_map_page_range_info_internal"); check_vm_page_info_basic_t(info, 1, 0, VM_PAGE_QUERY_PAGE_PAGED_OUT, 0); check_vm_page_info_basic_t(&info[1], 1, 0, VM_PAGE_QUERY_PAGE_PRESENT | VM_PAGE_QUERY_PAGE_DIRTY | VM_PAGE_QUERY_PAGE_REF, 0); insert_page_into_obj_to_increase_phys_footprint(obj); /* And now redo the call with a page. */ info = call_vm_map_page_range_info_internal(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 3, KERN_SUCCESS); check_vm_page_info_basic_t(info, 1, 0, VM_PAGE_QUERY_PAGE_PAGED_OUT, 0); check_vm_page_info_basic_t(&info[1], 1, 0, VM_PAGE_QUERY_PAGE_PRESENT | VM_PAGE_QUERY_PAGE_DIRTY | VM_PAGE_QUERY_PAGE_REF, 0); /* And then turn off the footprint option, check we get 0s for the gap. */ task_self_region_footprint_set(false); info = call_vm_map_page_range_info_internal(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 3, KERN_SUCCESS); T_ASSERT_NE_PTR(NULL, info, "call_vm_map_page_range_info_internal"); check_vm_page_info_basic_t(info, 0, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); } /* Check to make sure we get the function doesn't change any ref counts accidentally */ static void test_vm_map_page_range_info_internal_obj_refcount() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); vm_object_t object = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_t shadow = vm_object_allocate(PAGE_SIZE, map->serial_id); object->shadow = shadow; shadow->vo_copy = object; vm_object_reference(shadow); /* Make it have refcount of 2 */ enter_obj_entry(map, MAP_BASE, PAGE_SIZE, VM_PROT_DEFAULT, false, object); call_vm_map_page_range_info_internal(map, MAP_BASE, MAP_BASE + PAGE_SIZE, KERN_SUCCESS); T_ASSERT_EQ(os_ref_get_count_raw(&shadow->ref_count), 2, "shadow refcount"); T_ASSERT_EQ(os_ref_get_count_raw(&object->ref_count), 1, "object refcount"); } /* Test if the call starts below map min we get the right behavior */ static void test_vm_map_page_range_beyond_map_min() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE - PAGE_SIZE, MAP_BASE + PAGE_SIZE, 0); vm_object_t obj1 = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_t obj2 = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_reference(obj1); enter_obj_entry(map, MAP_BASE - PAGE_SIZE, PAGE_SIZE, VM_PROT_DEFAULT, false, obj1); /* entry before map min */ enter_obj_entry(map, MAP_BASE, PAGE_SIZE, VM_PROT_DEFAULT, false, obj2); map->min_offset += PAGE_SIZE; vm_page_info_basic_t info; /* Test before map min */ info = call_vm_map_page_range_info_internal(map, MAP_BASE - PAGE_SIZE, MAP_BASE + PAGE_SIZE, KERN_SUCCESS); check_vm_page_info_basic_t(info, 2, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 1, 0, 0, 0); } /* Test if the call starts above map max we get the right behavior */ static void test_vm_map_page_range_beyond_map_max() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), MAP_BASE, MAP_BASE + PAGE_SIZE * 2, 0); vm_object_t obj1 = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_t obj2 = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_reference(obj1); enter_obj_entry(map, MAP_BASE, PAGE_SIZE, VM_PROT_DEFAULT, false, obj1); /* entry before map min */ enter_obj_entry(map, MAP_BASE + PAGE_SIZE, PAGE_SIZE, VM_PROT_DEFAULT, false, obj2); map->min_offset -= PAGE_SIZE; vm_page_info_basic_t info; /* Test after map max */ info = call_vm_map_page_range_info_internal(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 2, KERN_SUCCESS); check_vm_page_info_basic_t(info, 2, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 1, 0, 0, 0); } /* Check we get the proper offsets returned */ static void test_vm_map_page_range_offsets() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); vm_object_t obj1 = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_t obj2 = vm_object_allocate(PAGE_SIZE, map->serial_id); enter_obj_entry(map, MAP_BASE, PAGE_SIZE, VM_PROT_DEFAULT, false, obj1); /* entry before map min */ /* PAGE_SIZE gap */ enter_obj_entry(map, MAP_BASE + PAGE_SIZE * 2, PAGE_SIZE * 3, VM_PROT_DEFAULT, false, obj2); /* obj2 is [page, empty ]*/ insert_page_into_obj_to_increase_phys_footprint(obj2); vm_page_info_basic_t info; info = call_vm_map_page_range_info_internal(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 6, KERN_SUCCESS); check_vm_page_info_basic_t(info, 1, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); check_vm_page_info_basic_t(&info[2], 1, 0, VM_PAGE_QUERY_PAGE_PRESENT, 0); check_vm_page_info_basic_t(&info[3], 1, 0, 0, PAGE_SIZE); check_vm_page_info_basic_t(&info[4], 1, 0, 0, PAGE_SIZE * 2); check_vm_page_info_basic_t(&info[5], 0, 0, 0, 0); T_LOG("done with %p", map); } /* Check we get the right shadow chain depth */ static void test_vm_map_page_range_depth() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); vm_object_t obj1 = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_t obj2 = vm_object_allocate(PAGE_SIZE, map->serial_id); vm_object_reference(obj2); /* prevent panic on shadow chain collapse */ enter_obj_entry(map, MAP_BASE, PAGE_SIZE, VM_PROT_DEFAULT, false, obj2); obj2->shadow = obj1; insert_page_into_obj_to_increase_phys_footprint(obj1); vm_page_info_basic_t info; info = call_vm_map_page_range_info_internal(map, MAP_BASE, MAP_BASE + PAGE_SIZE, KERN_SUCCESS); check_vm_page_info_basic_t(info, 2, 1, VM_PAGE_QUERY_PAGE_PRESENT, 0); } static void test_vm_map_page_range_submap() { vm_map_t map = setup_vm_map_region_recurse_64_submap_map(); task_self_region_footprint_set(true); vm_page_info_basic_t info; info = call_vm_map_page_range_info_internal(map, 0x180000000ULL, 0x180000000ULL + PAGE_SIZE * 2, KERN_SUCCESS); check_vm_page_info_basic_t(info, 1, 0, 0, 0); } static void test_vm_map_page_range_hole_at_end() { vm_object_t obj = vm_object_allocate(PAGE_SIZE * 2, VM_MAP_SERIAL_NONE); /* First, let's test without the footprint */ vm_map_t map = create_vm_map_with_ledger_tagged_obj(MAP_BASE, obj, PAGE_SIZE); /* and throw an entry super late in the map */ vm_test_add_map_entry(map, MAP_BASE + PAGE_SIZE * 50, MAP_BASE + PAGE_SIZE * 51); kern_return_t kr; task_self_region_footprint_set(false); /* Basic test to make sure simple calls work. Include a gap at the end */ vm_page_info_basic_t info = call_vm_map_page_range_info_internal(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 2, KERN_SUCCESS); T_ASSERT_NE_PTR(NULL, info, "call_vm_map_page_range_info_internal"); check_vm_page_info_basic_t(info, 1, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); /* gap */ /* starting and ending in the gap */ info = call_vm_map_page_range_info_internal(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 3, KERN_SUCCESS); T_ASSERT_NE_PTR(NULL, info, "call_vm_map_page_range_info_internal"); check_vm_page_info_basic_t(info, 0, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); /* gap */ check_vm_page_info_basic_t(&info[2], 0, 0, 0, 0); /* gap */ /* at the fake region, starting in gap */ info = call_vm_map_page_range_info_internal(map, MAP_BASE + PAGE_SIZE * 49, MAP_BASE + PAGE_SIZE * 51, KERN_SUCCESS); check_vm_page_info_basic_t(info, 0, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); /* gap */ /* enable the footprint */ task_self_region_footprint_set(true); insert_page_into_obj_to_increase_phys_footprint(obj); /* valid start, end in gap */ info = call_vm_map_page_range_info_internal(map, MAP_BASE, MAP_BASE + PAGE_SIZE * 2, KERN_SUCCESS); T_ASSERT_NE_PTR(NULL, info, "call_vm_map_page_range_info_internal"); check_vm_page_info_basic_t(info, 1, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); /* gap */ /* starting an ending in the gap */ info = call_vm_map_page_range_info_internal(map, MAP_BASE + PAGE_SIZE, MAP_BASE + PAGE_SIZE * 3, KERN_SUCCESS); check_vm_page_info_basic_t(info, 0, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); /* gap */ check_vm_page_info_basic_t(&info[2], 0, 0, 0, 0); /* gap */ /* at the fake region, starting in gap */ info = call_vm_map_page_range_info_internal(map, MAP_BASE + PAGE_SIZE * 49, MAP_BASE + PAGE_SIZE * 52, KERN_SUCCESS); check_vm_page_info_basic_t(info, 0, 0, 0, 0); check_vm_page_info_basic_t(&info[1], 0, 0, 0, 0); /* gap */ check_vm_page_info_basic_t(&info[2], 1, 0, VM_PAGE_QUERY_PAGE_PAGED_OUT, 0); /* fake region */ } T_DECL(vm_map_page_range_info_internal, "test vm_map_page_range_info_internal") { /* This function already has pretty thorough tests from the vm_configurator via mincore. */ test_vm_map_page_range_info_internal_footprint(); test_vm_map_page_range_info_internal_obj_refcount(); test_vm_map_page_range_beyond_map_min(); test_vm_map_page_range_beyond_map_max(); test_vm_map_page_range_offsets(); test_vm_map_page_range_depth(); test_vm_map_page_range_submap(); test_vm_map_page_range_hole_at_end(); } static void vm_map_corpse_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); T_ASSERT_EQ_INT(vm_map_is_corpse_source(map), false, "vm_map_is_corpse_source"); vm_map_set_corpse_source(map); T_ASSERT_EQ_INT(vm_map_is_corpse_source(map), true, "vm_map_is_corpse_source"); vm_map_unset_corpse_source(map); T_ASSERT_EQ_INT(vm_map_is_corpse_source(map), false, "vm_map_is_corpse_source"); vm_map_destroy(map); } static void vm_map_alien_tests() { #if XNU_TARGET_OS_OSX vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); T_ASSERT_EQ_INT(vm_map_is_alien(map), false, "alien"); vm_map_mark_alien(map); T_ASSERT_EQ_INT(vm_map_is_alien(map), true, "alien"); vm_map_destroy(map); #endif /* XNU_TARGET_OS_OSX */ } static void vm_map_sec_access_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); T_ASSERT_EQ_INT(vm_map_has_sec_access(map), false, "sec_access"); vm_map_mark_has_sec_access(map); T_ASSERT_EQ_INT(vm_map_has_sec_access(map), true, "sec_access"); vm_map_remove_sec_access(map); T_ASSERT_EQ_INT(vm_map_has_sec_access(map), false, "sec_access"); vm_map_ilk_lock(map); vm_map_mark_has_sec_access_ilocked(map); vm_map_ilk_unlock(map); T_ASSERT_EQ_INT(vm_map_has_sec_access(map), true, "sec_access"); vm_map_destroy(map); } static void vm_map_tpro_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); T_ASSERT_EQ_INT(vm_map_tpro_enforcement(map), false, "tpro off"); map->pmap->xprr_tpro_enabled = true; vm_map_set_tpro_enforcement(map); T_ASSERT_EQ_INT(vm_map_tpro_enforcement(map), true, "tpro on"); vm_map_destroy(map); } static void vm_map_single_jit_tests() { #if XNU_TARGET_OS_OSX vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); T_ASSERT_EQ_INT((int) map->single_jit, false, "single_jit"); vm_map_single_jit(map); T_ASSERT_EQ_INT((int) map->single_jit, true, "single_jit"); vm_map_destroy(map); #endif /* XNU_TARGET_OS_OSX */ } static void vm_map_setup_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); vm_map_setup(map, current_task()); T_ASSERT_EQ_PTR(map->owning_task, current_task(), "task set"); vm_map_destroy(map); } static void vm_map_max_addr_tests() { vm_map_address_t starting_max = 0xffffc0000; vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, starting_max, 0); vm_map_set_max_addr(map, starting_max - PAGE_SIZE, false); T_ASSERT_EQ_ULLONG(map->max_offset, starting_max, "unchanged when shrunk"); vm_map_set_max_addr(map, starting_max + PAGE_SIZE, false); T_ASSERT_EQ_ULLONG(map->max_offset, starting_max + PAGE_SIZE, "changed"); vm_map_address_t last_max_offset = map->max_offset; kern_return_t kr = vm_map_raise_max_offset(map, last_max_offset - PAGE_SIZE); T_ASSERT_EQ_ULLONG(map->max_offset, last_max_offset, "unchanged when shrunk"); T_ASSERT_EQ_INT(kr, KERN_INVALID_ADDRESS, "offset shrunk"); kr = vm_map_raise_max_offset(map, last_max_offset + PAGE_SIZE); T_ASSERT_EQ_ULLONG(map->max_offset, last_max_offset + PAGE_SIZE, "grew"); T_ASSERT_EQ_INT(kr, KERN_SUCCESS, "offset shrunk"); vm_map_destroy(map); } static void vm_map_limit_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); vm_map_set_size_limit(map, 0); T_ASSERT_EQ_ULLONG(map->size_limit, 0ULL, "size limit set"); vm_map_set_data_limit(map, 0); T_ASSERT_EQ_ULLONG(map->data_limit, 0ULL, "size limit set"); vm_map_destroy(map); } static void vm_map_switch_protect_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); vm_map_switch_protect(map, true); T_ASSERT_EQ_INT((int) map->switch_protect, true, "switch_protect"); vm_map_switch_protect(map, false); T_ASSERT_EQ_INT((int) map->switch_protect, false, "switch_protect"); vm_map_destroy(map); } static void vm_map_cs_debugged_set_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); T_ASSERT_EQ_INT((int) map->cs_debugged, false, "cs_debugged"); vm_map_cs_debugged_set(map, true); T_ASSERT_EQ_INT((int) map->cs_debugged, true, "cs_debugged"); vm_map_destroy(map); } static void vm_map_cs_enforcement_set_tests() { vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), 0, 0xfffffffffffff, 0); T_ASSERT_EQ_INT((int) map->cs_enforcement, false, "cs_debugged"); vm_map_cs_enforcement_set(map, true); T_ASSERT_EQ_INT((int) map->cs_enforcement, true, "cs_debugged"); vm_map_destroy(map); } T_DECL(bit_set_apis, "Test a bunch of bit setting APIs") { vm_map_corpse_tests(); vm_map_alien_tests(); vm_map_sec_access_tests(); vm_map_tpro_tests(); vm_map_setup_tests(); vm_map_max_addr_tests(); vm_map_limit_tests(); vm_map_switch_protect_tests(); vm_map_cs_debugged_set_tests(); vm_map_cs_enforcement_set_tests(); vm_map_single_jit_tests(); } T_DECL(vm_map_machine_attribute, "test vm_map_machine_attribute") { vm_map_t map = create_map(WITH_PAGE, true); vm_machine_attribute_val_t value = 0; kern_return_t kr = vm_map_machine_attribute(map, MAP_BASE, MAP_BASE + PAGE_SIZE, MATTR_CACHE, &value); T_ASSERT_EQ(kr, KERN_SUCCESS, "vm_map_machine_attribute"); } static void test_fill_procregioninfo_footprint() { int ret; struct proc_regioninfo_internal pinfo; uintptr_t vnodeaddr; uint32_t vid; task_t task = current_task(); /* Setup the task/ledger */ init_task_with_ledgers(task); task_self_region_footprint_set(true); /* Make a map, add the object */ vm_object_t obj = vm_object_allocate(PAGE_SIZE * 2, VM_MAP_SERIAL_NONE); vm_map_t map = create_vm_map_with_ledger_tagged_obj(MAP_BASE, obj, PAGE_SIZE); task->map = map; /* empty ledgers */ bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, MAP_BASE + PAGE_SIZE, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(0, ret, "fill_procregioninfo"); insert_page_into_obj_to_increase_phys_footprint(obj); bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, MAP_BASE + PAGE_SIZE, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(1, ret, "fill_procregioninfo"); task_self_region_footprint_set(false); } T_DECL(test_fill_procregioninfo, "Call fill_procregioninfo") { int ret; struct proc_regioninfo_internal pinfo; uintptr_t vnodeaddr; uint32_t vid; task_t task = current_task(); /* Setup the task/ledger */ task_self_region_footprint_set(false); uint64_t map_start = 0x00001000000000; uint64_t map_end = 0xfffffffff00000; vm_map_t map = vm_map_create_options(pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), map_start, map_end, 0); task->map = map; /* empty map */ ret = fill_procregioninfo(task, map_start, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(0, ret, "Simple call fails because there is no entry"); vm_map_entry_t vm_entry = enter_obj_entry(map, map_start, PAGE_SIZE, VM_PROT_READ, false); vm_map_entry_t vm_submap = vm_test_add_map_entry(map, map_start + PAGE_SIZE * 2, map_start + PAGE_SIZE * 4); vm_map_entry_t vm_entry1 = enter_obj_entry(map, map_start + PAGE_SIZE * 10, PAGE_SIZE, VM_PROT_DEFAULT, false); vm_submap->is_sub_map = true; vm_map_t submap = vm_map_create_options(NULL, 0x00001000000000, 0x00001000000000 + PAGE_SIZE, 0); submap->vmmap_sealed = VM_MAP_WILL_BE_SEALED; vm_map_seal(submap, false); assert(vm_entry_try_lock_exclusive(vm_submap)); VME_SUBMAP_SET(vm_submap, submap); vm_entry_unlock_exclusive(map, vm_submap); vm_map_ilk_lock(map); assert3u(KERN_SUCCESS, ==, vm_entry_lock_exclusive(map, LCK_RW_TYPE_EXCLUSIVE, vm_entry, map_start, THREAD_UNINT)); vm_object_t obj = VME_OBJECT(vm_entry); vm_entry->protection = VM_PROT_READ; vm_entry_unlock_exclusive(map, vm_entry); vm_map_ilk_unlock(map); /* 1st entry */ bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, map_start, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(1, ret, "fill_procregioninfo"); T_ASSERT_EQ_INT(VM_PROT_READ, pinfo.pri_protection, "prot"); T_ASSERT_EQ_INT(pinfo.pri_share_mode, SM_PRIVATE, "share_mode"); T_ASSERT_EQ_ULLONG(pinfo.pri_address, map_start, "pri_address"); T_ASSERT_EQ_INT(pinfo.pri_flags, 0, "pri_flags"); /* submap */ bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, map_start + PAGE_SIZE * 2, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(1, ret, "fill_procregioninfo"); T_ASSERT_EQ_INT(VM_PROT_DEFAULT, pinfo.pri_protection, "prot"); T_ASSERT_EQ_INT(pinfo.pri_share_mode, SM_EMPTY, "share_mode"); T_ASSERT_EQ_ULLONG(pinfo.pri_address, map_start + PAGE_SIZE * 2, "pri_address"); T_ASSERT_EQ_ULLONG(pinfo.pri_size, (uint64_t)PAGE_SIZE * 2, "pri_size"); T_ASSERT_EQ_INT(pinfo.pri_flags, PROC_REGION_SUBMAP, "pri_flags"); /* 3rd entry */ bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, map_start + PAGE_SIZE * 10, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(1, ret, "fill_procregioninfo"); T_ASSERT_EQ_INT(VM_PROT_DEFAULT, pinfo.pri_protection, "prot"); T_ASSERT_EQ_INT(pinfo.pri_share_mode, SM_PRIVATE, "share_mode"); T_ASSERT_EQ_ULLONG(pinfo.pri_address, map_start + PAGE_SIZE * 10, "pri_address"); T_ASSERT_EQ_ULLONG(pinfo.pri_size, (uint64_t)PAGE_SIZE, "pri_size"); T_ASSERT_EQ_INT(pinfo.pri_flags, 0, "pri_flags"); /* 3rd entry starting before */ bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, map_start + PAGE_SIZE * 9, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(1, ret, "fill_procregioninfo"); T_ASSERT_EQ_INT(VM_PROT_DEFAULT, pinfo.pri_protection, "prot"); T_ASSERT_EQ_INT(pinfo.pri_share_mode, SM_PRIVATE, "share_mode"); T_ASSERT_EQ_ULLONG(pinfo.pri_address, map_start + PAGE_SIZE * 10, "pri_address"); T_ASSERT_EQ_ULLONG(pinfo.pri_size, (uint64_t)PAGE_SIZE, "pri_size"); T_ASSERT_EQ_INT(pinfo.pri_flags, 0, "pri_flags"); /* last entry end */ bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, map_start + PAGE_SIZE * 11, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(0, ret, "fill_procregioninfo"); test_fill_procregioninfo_footprint(); vm_map_guard_object_slab_init(map); task->map = map; vm_map_address_t guard_addr; kern_return_t kr = vm_map_enter(map, &guard_addr, 3 * PAGE_SIZE, 0, VM_MAP_KERNEL_FLAGS_ANYWHERE(), VM_OBJECT_NULL, 0, false, VM_PROT_READ | VM_PROT_WRITE, VM_PROT_READ | VM_PROT_WRITE, 0); T_ASSERT_EQ(kr, KERN_SUCCESS, "First guard object allocation should succeed"); /* 3rd entry starting before */ bzero(&pinfo, sizeof(pinfo)); ret = fill_procregioninfo(task, guard_addr + 3 * PAGE_SIZE, &pinfo, &vnodeaddr, &vid); T_ASSERT_EQ(1, ret, "fill_procregioninfo"); T_ASSERT_EQ_INT(VM_PROT_NONE, pinfo.pri_protection, "prot"); T_ASSERT_EQ_INT(pinfo.pri_share_mode, SM_EMPTY, "share_mode"); T_ASSERT_EQ_ULLONG(pinfo.pri_address, guard_addr + 3 * PAGE_SIZE, "pri_address"); } /* * Read-faults an address. * Requires the mocks installed by scoped_mocks_for_fault_addr(). */ static void fault_addr(vm_map_t map, mach_vm_address_t addr) { kern_return_t kr; kr = vm_fault(map, addr, VM_PROT_READ, false, VM_KERN_MEMORY_NONE, 0, NULL, 0); T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "read fault map %p address 0x%llx", map, addr); } /* * Install the mocks needed by fault_addr(). * These mocks expire at end of scope. */ #define scoped_mocks_for_fault_addr(void) \ T_MOCK_SET_RETVAL(vm_fault_enter_prepare, kern_return_t, KERN_SUCCESS); \ T_MOCK_SET_RETVAL(vm_fault_attempt_pmap_enter, kern_return_t, KERN_SUCCESS) struct test_page_range_info_allocation { mach_vm_address_t start; mach_vm_address_t end; bool has_object; }; static mach_vm_address_t alloc_for_page_range_info_test( vm_map_t map, struct test_page_range_info_allocation *allocs) { mach_vm_address_t last_end = 0; for (int i = 0; allocs[i].end != 0; i++) { mach_vm_address_t addr = allocs[i].start; mach_vm_size_t size = allocs[i].end - allocs[i].start; last_end = allocs[i].end; kern_return_t kr = mach_vm_allocate_kernel(map, &addr, size, VM_MAP_KERNEL_FLAGS_FIXED()); T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "alloc #%d addr 0x%llx size 0x%llx", i, addr, size); if (allocs[i].has_object) { fault_addr(map, addr); } } return last_end; } static void dealloc_for_page_range_info_test( vm_map_t map, struct test_page_range_info_allocation *allocs) { for (int i = 0; allocs[i].end != 0; i++) { mach_vm_address_t addr = allocs[i].start; mach_vm_size_t size = allocs[i].end - allocs[i].start; kern_return_t kr = mach_vm_deallocate_kernel(map, addr, size); T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "dealloc #%d addr 0x%llx size 0x%llx", i, addr, size); } } static void call_page_range_info_internal_with_page_shift( vm_map_t map, mach_vm_address_t query_start, mach_vm_address_t query_end, int effective_page_shift, const char *message) { T_QUIET; T_ASSERT_TRUE(effective_page_shift == FOURK_PAGE_SHIFT || effective_page_shift == SIXTEENK_PAGE_SHIFT, "page size"); int effective_page_size = 1 << effective_page_shift; T_QUIET; T_ASSERT_EQ(query_start % effective_page_size, 0ULL, "alignment"); T_QUIET; T_ASSERT_EQ(query_end % effective_page_size, 0ULL, "alignment"); unsigned int info_count = (query_end - query_start) / effective_page_size; vm_page_info_basic_data_t *info_array = calloc(sizeof(vm_page_info_basic_data_t), info_count + 2); unsigned int guard_prefix = 0; unsigned int guard_suffix = info_count + 1; memset(&info_array[guard_prefix], 0xAA, sizeof(info_array[guard_prefix])); memset(&info_array[guard_suffix], 0xAA, sizeof(info_array[guard_suffix])); mach_msg_type_number_t mig_count = VM_PAGE_INFO_BASIC_COUNT; kern_return_t kr = vm_map_page_range_info_internal(map, query_start, query_end, effective_page_shift, VM_PAGE_INFO_BASIC, (vm_page_info_t)&info_array[1], &mig_count); T_ASSERT_MACH_SUCCESS(kr, "vm_map_page_range_info_internal (%s)", message); T_QUIET; T_ASSERT_EQ(info_array[guard_prefix].depth, 0xAAAAAAAA, "prefix guard info (%s)", message); T_QUIET; T_ASSERT_EQ(info_array[guard_suffix].depth, 0xAAAAAAAA, "suffix guard info (%s)", message); free(info_array); } T_DECL(vm_map_page_range_info_internal_page_size_mismatch, "Test vm_map_page_range_info_internal where the " "effective page size is not the map's page size") { /* TODO write more tests of these cases (rdar://160878279) */ scoped_mocks_for_fault_addr(); /* * rdar://160380938 * If effective_page_size > map page size then * `address += effective_page_size` may skip over an entire map entry. * * rdar://163529903 * `address += effective_page_size` may skip over an entire map entry * and land in the next entry beyond its start. * * randomized seed 3156194068 * 4K-aligned hole with 16K-aligned size should not fill too many info elements. * * The loop in vm_map_page_range_info_internal must allow these. * * TODO (rdar://160878279) also verify the returned page info */ init_task_with_ledgers(current_task()); mach_vm_address_t map_start = 0x100000000; mach_vm_address_t map_end = map_start * 2; T_QUIET; T_ASSERT_EQ(map_start % SIXTEENK_PAGE_SIZE, 0ULL, "16K alignment"); vm_map_t map = vm_map_create_with_page_shift( pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), map_start, map_end, FOURK_PAGE_SHIFT, 0); T_QUIET; T_ASSERT_NOTNULL(map, "map"); mach_vm_address_t allocs_end; mach_vm_size_t size; kern_return_t kr; /* rdar://160380938 */ struct test_page_range_info_allocation alloc_160380938[] = { { .start = map_start + FOURK_PAGE_SIZE * 0, .end = map_start + FOURK_PAGE_SIZE * 1, .has_object = true }, { .start = map_start + FOURK_PAGE_SIZE * 1, .end = map_start + FOURK_PAGE_SIZE * 2, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 2, .end = map_start + FOURK_PAGE_SIZE * 3, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 3, .end = map_start + FOURK_PAGE_SIZE * 4, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 4, .end = map_start + FOURK_PAGE_SIZE * 5, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 5, .end = map_start + FOURK_PAGE_SIZE * 6, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 6, .end = map_start + FOURK_PAGE_SIZE * 7, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 7, .end = map_start + FOURK_PAGE_SIZE * 8, .has_object = false }, { .end = 0 }, }; allocs_end = alloc_for_page_range_info_test(map, alloc_160380938); task_self_region_footprint_set(true); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, FOURK_PAGE_SHIFT, "rdar://160380938 4K footprint"); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, SIXTEENK_PAGE_SHIFT, "rdar://160380938 16K footprint"); task_self_region_footprint_set(false); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, FOURK_PAGE_SHIFT, "rdar://160380938 4K no-footprint"); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, SIXTEENK_PAGE_SHIFT, "rdar://160380938 16K no-footprint"); dealloc_for_page_range_info_test(map, alloc_160380938); /* rdar://163529903 */ struct test_page_range_info_allocation alloc_163529903[] = { { .start = map_start + FOURK_PAGE_SIZE * 0, .end = map_start + FOURK_PAGE_SIZE * 1, .has_object = true }, { .start = map_start + FOURK_PAGE_SIZE * 1, .end = map_start + FOURK_PAGE_SIZE * 2, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 2, .end = map_start + FOURK_PAGE_SIZE * 3, .has_object = false }, { .start = map_start + FOURK_PAGE_SIZE * 3, .end = map_start + FOURK_PAGE_SIZE * 8, .has_object = false }, { .end = 0 }, }; allocs_end = alloc_for_page_range_info_test(map, alloc_163529903); task_self_region_footprint_set(true); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, FOURK_PAGE_SHIFT, "rdar://163529903 4K footprint"); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, SIXTEENK_PAGE_SHIFT, "rdar://163529903 16K footprint"); task_self_region_footprint_set(false); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, FOURK_PAGE_SHIFT, "rdar://163529903 4K no-footprint"); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, SIXTEENK_PAGE_SHIFT, "rdar://163529903 16K no-footprint"); dealloc_for_page_range_info_test(map, alloc_163529903); /* randomized seed 3156194068 */ struct test_page_range_info_allocation alloc_3156194068[] = { { .start = map_start + FOURK_PAGE_SIZE * 0, .end = map_start + FOURK_PAGE_SIZE * 2, .has_object = true }, /* unallocated size FOURK_PAGE_SIZE * 12 */ { .start = map_start + FOURK_PAGE_SIZE * 14, .end = map_start + FOURK_PAGE_SIZE * 24, .has_object = true }, { .end = 0 }, }; allocs_end = alloc_for_page_range_info_test(map, alloc_3156194068); task_self_region_footprint_set(true); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, FOURK_PAGE_SHIFT, "seed 3156194068 4K footprint"); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, SIXTEENK_PAGE_SHIFT, "seed 3156194068 16K footprint"); task_self_region_footprint_set(false); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, FOURK_PAGE_SHIFT, "seed 3156194068 4K no-footprint"); call_page_range_info_internal_with_page_shift(map, map_start, allocs_end, SIXTEENK_PAGE_SHIFT, "seed 3156194068 16K no-footprint"); dealloc_for_page_range_info_test(map, alloc_3156194068); } static bool random_hole(unsigned *seedp) { /* 1/8 chance of hole */ int r = rand_r(seedp); return r % 8 == 0; } static bool random_fault(unsigned *seedp) { /* 1/2 chance of fault */ int r = rand_r(seedp); return r % 2 == 0; } static mach_vm_size_t random_size_4K(unsigned *seedp) { /* even distribution of (1..16) * FOURK_PAGE_SIZE */ int r = rand_r(seedp); r = r % 16 + 1; return r * FOURK_PAGE_SIZE; } T_DECL(vm_map_page_range_info_internal_randomized, "Test vm_map_page_range_info_internal across randomized allocations and gaps") { unsigned initial_seed; if (argc >= 1) { initial_seed = atoi(argv[0]); T_LOG("USING SPECIFIED RANDOM SEED %u\n", initial_seed); } else { initial_seed = arc4random(); T_LOG("note: run `env VERBOSE=1 vm_map_misc_api_tests " "-n vm_map_page_range_info_internal_randomized %u` to " "re-run with this random seed and print the address space", initial_seed); } unsigned seed = initial_seed; bool verbose = getenv("VERBOSE"); scoped_mocks_for_fault_addr(); init_task_with_ledgers(current_task()); mach_vm_address_t map_start = 0x100000000; mach_vm_address_t map_end = map_start + 0x1000000; T_QUIET; T_ASSERT_EQ(map_start % SIXTEENK_PAGE_SIZE, 0ULL, "16K alignment"); vm_map_t map = vm_map_create_with_page_shift( pmap_create_options(NULL, 0, PMAP_CREATE_64BIT), map_start, map_end, FOURK_PAGE_SHIFT, 0); T_QUIET; T_ASSERT_NOTNULL(map, "map"); kern_return_t kr; /* * Make many randomly-sized allocations and unallocated holes. * Randomly fault in some of them to force an object to be created. */ mach_vm_address_t addr = map_start; while (addr < map_end) { bool hole = random_hole(&seed); bool fault = random_fault(&seed); mach_vm_size_t size = random_size_4K(&seed); if (addr + size >= map_end) { break; } if (hole) { if (verbose) { raw_printf("0x%llx..0x%llx hole\n", addr, addr + size); } addr += size; continue; } if (verbose) { raw_printf("0x%llx..0x%llx allocation%s\n", addr, addr + size, fault ? " (faulted)" : ""); } kr = mach_vm_allocate_kernel(map, &addr, size, VM_MAP_KERNEL_FLAGS_FIXED()); T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "alloc addr 0x%llx size 0x%llx", addr, size); if (fault) { fault_addr(map, addr); } addr += size; } char *message; asprintf(&message, "random seed %u, 4K footprint", initial_seed); task_self_region_footprint_set(true); call_page_range_info_internal_with_page_shift(map, map_start, map_end, FOURK_PAGE_SHIFT, message); free(message); asprintf(&message, "random seed %u, 4K no-footprint", initial_seed); task_self_region_footprint_set(false); call_page_range_info_internal_with_page_shift(map, map_start, map_end, FOURK_PAGE_SHIFT, message); free(message); asprintf(&message, "random seed %u, 16K footprint", initial_seed); task_self_region_footprint_set(true); call_page_range_info_internal_with_page_shift(map, map_start, map_end, SIXTEENK_PAGE_SHIFT, message); free(message); asprintf(&message, "random seed %u, 16K no-footprint", initial_seed); task_self_region_footprint_set(false); call_page_range_info_internal_with_page_shift(map, map_start, map_end, SIXTEENK_PAGE_SHIFT, message); free(message); }