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Many additions + stubs; basic kernel MIG RPC working

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Most of the newly added functions are just stubs for MIG calls. However, we now properly initialize IPC and related subsystems and we now have copyin/copyout that allows basic `mach_msg_overwrite_trap` usage.

dyld now progresses to `getHostInfo` and successfully retrieves `host_info` with a kernel MIG call (and then proceeds to die on `mach_port_deallocate`, since it hasn't been updated yet).
This commit is contained in:
Ariel Abreu 2022-01-20 00:11:51 -05:00
parent 3bfc652c9b
commit be93cc46b7
No known key found for this signature in database
GPG Key ID: D67AE16CCEA85B70
36 changed files with 1812 additions and 88 deletions
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1
.gitignore vendored Normal file
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@ -0,0 +1 @@
.gdb_history

10
duct-tape/CMakeLists.txt
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@ -129,6 +129,7 @@ add_compile_options(
-fblocks
-ffunction-sections
-fdata-sections
-Wno-incompatible-library-redeclaration
)
set(MIG_USER_SOURCE_SUFFIX "User.c")
@ -196,6 +197,7 @@ add_custom_target(kernel_mig_generate
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/upl.h
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/host_notify_reply.h
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/vm32_map_server.h
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/vm32_map_server.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/mach_notify.h
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/mach_voucher_attr_control.h
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/memory_entry_server.h
@ -237,6 +239,8 @@ add_library(darlingserver_duct_tape
src/thread.c
src/timer.c
src/traps.c
src/host.c
src/processor.c
xnu/libkern/os/refcnt.c
xnu/libkern/gen/OSAtomicOperations.c
@ -261,6 +265,9 @@ add_library(darlingserver_duct_tape
xnu/osfmk/kern/timer_call.c
xnu/osfmk/kern/clock_oldops.c
xnu/osfmk/kern/sync_sema.c
xnu/osfmk/kern/sync_lock.c
xnu/osfmk/kern/syscall_emulation.c
xnu/osfmk/kern/ux_handler.c
xnu/osfmk/ipc/ipc_entry.c
xnu/osfmk/ipc/ipc_hash.c
@ -287,6 +294,8 @@ add_library(darlingserver_duct_tape
xnu/osfmk/prng/prng_random.c
xnu/osfmk/vm/vm32_user.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/clock_priv_server.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/clock_reply_user.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/clock_server.c
@ -310,6 +319,7 @@ add_library(darlingserver_duct_tape
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/task_server.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/thread_act_server.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/mach_eventlink_server.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/mach/vm32_map_server.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/device/device_server.c
${CMAKE_CURRENT_BINARY_DIR}/xnu/osfmk/UserNotification/UNDReplyServer.c
)

9
duct-tape/include/darlingserver/duct-tape.h
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@ -2,6 +2,8 @@
#define _DARLINGSERVER_DUCT_TAPE_H_
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <libsimple/lock.h>
@ -42,6 +44,8 @@ typedef dtape_thread_handle_t (*dtape_hook_thread_create_kernel_f)(void);
typedef void (*dtape_hook_thread_start_f)(void* thread_context, dtape_thread_continuation_callback_f continuation_callback);
typedef void (*dtape_hook_current_thread_interrupt_disable_f)(void);
typedef void (*dtape_hook_current_thread_interrupt_enable_f)(void);
typedef bool (*dtape_hook_task_read_memory_f)(void* task_context, uintptr_t remote_address, void* local_buffer, size_t length);
typedef bool (*dtape_hook_task_write_memory_f)(void* task_context, uintptr_t remote_address, const void* local_buffer, size_t length);
typedef struct dtape_hooks {
dtape_hook_thread_suspend_f thread_suspend;
@ -55,13 +59,18 @@ typedef struct dtape_hooks {
dtape_hook_thread_start_f thread_start;
dtape_hook_current_thread_interrupt_disable_f current_thread_interrupt_disable;
dtape_hook_current_thread_interrupt_enable_f current_thread_interrupt_enable;
dtape_hook_task_read_memory_f task_read_memory;
dtape_hook_task_write_memory_f task_write_memory;
} dtape_hooks_t;
void dtape_init(const dtape_hooks_t* hooks);
void dtape_deinit(void);
uint32_t dtape_task_self_trap(void);
uint32_t dtape_host_self_trap(void);
uint32_t dtape_thread_self_trap(void);
uint32_t dtape_mach_reply_port(void);
int dtape_mach_msg_overwrite(uintptr_t msg, int32_t option, uint32_t send_size, uint32_t rcv_size, uint32_t rcv_name, uint32_t timeout, uint32_t notify, uintptr_t rcv_msg, uint32_t rcv_limit);
/**
* The threshold beyond which thread IDs are considered IDs for kernel threads.

33
duct-tape/internal-include/darlingserver/duct-tape/memory.h Normal file
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@ -0,0 +1,33 @@
#ifndef _DARLINGSERVER_DUCT_TAPE_MEMORY_H_
#define _DARLINGSERVER_DUCT_TAPE_MEMORY_H_
#include <stdint.h>
#include <mach/vm_types.h>
#include <os/refcnt.h>
struct dtape_task;
struct _vm_map {
uint32_t dtape_page_shift;
uint64_t max_offset;
os_refcnt_t map_refcnt;
struct dtape_task* dtape_task;
};
#define VM_MAP_PAGE_SHIFT(map) ((map) ? (map)->dtape_page_shift : PAGE_SHIFT)
struct vm_map_copy {
int type;
uint64_t offset;
uint64_t size;
};
#define VM_MAP_COPY_ENTRY_LIST 1
#define VM_MAP_COPY_OBJECT 2
#define VM_MAP_COPY_KERNEL_BUFFER 3
void dtape_memory_init(void);
vm_map_t dtape_vm_map_create(struct dtape_task* task);
void dtape_vm_map_destroy(vm_map_t map);
#endif // _DARLINGSERVER_DUCT_TAPE_MEMORY_H_

6
duct-tape/internal-include/darlingserver/duct-tape/processor.h Normal file
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@ -0,0 +1,6 @@
#ifndef _DARLINGSERVER_DUCT_TAPE_PROCESOR_H_
#define _DARLINGSERVER_DUCT_TAPE_PROCESOR_H_
void dtape_processor_init(void);
#endif // _DARLINGSERVER_DUCT_TAPE_PROCESOR_H_

16
duct-tape/internal-include/darlingserver/duct-tape/stubs.h
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@ -3,10 +3,18 @@
#include <stdbool.h>
void dtape_stub_log(const char* function_name, int safety);
void dtape_stub_log(const char* function_name, int safety, const char* subsection);
#define dtape_stub() (dtape_stub_log(__FUNCTION__, 0))
#define dtape_stub_safe() (dtape_stub_log(__FUNCTION__, 1))
#define dtape_stub_unsafe() (dtape_stub_log(__FUNCTION__, -1))
// for general functions where it's unknown whether they can be safely stubbed or not
#define dtape_stub(...) (dtape_stub_log(__FUNCTION__, 0, "" __VA_ARGS__))
// for functions that have been confirmed to be okay being stubbed
#define dtape_stub_safe(...) (dtape_stub_log(__FUNCTION__, 1, "" __VA_ARGS__))
// for functions that have been confirmed to require an actual implementation (rather than a simple stub)
#define dtape_stub_unsafe(...) ({ \
dtape_stub_log(__FUNCTION__, -1, "" __VA_ARGS__); \
__builtin_unreachable(); \
}) \
#endif // _DARLINGSERVER_DUCT_TAPE_STUBS_H_

2
duct-tape/internal-include/darlingserver/duct-tape/task.h
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@ -15,4 +15,6 @@ static dtape_task_t* dtape_task_for_xnu_task(task_t xnu_task) {
return (dtape_task_t*)((char*)xnu_task - offsetof(dtape_task_t, xnu_task));
};
void dtape_task_init(void);
#endif // _DARLINGSERVER_DUCT_TAPE_TASK_H_

157
duct-tape/src/host.c Normal file
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@ -0,0 +1,157 @@
#include <darlingserver/duct-tape/stubs.h>
#include <kern/host.h>
#include <mach_debug/mach_debug.h>
#include <libsimple/lock.h>
// Linux sysinfo (from the sysinfo man page)
struct sysinfo {
long uptime;
unsigned long loads[3];
unsigned long totalram;
unsigned long freeram;
unsigned long sharedram;
unsigned long bufferram;
unsigned long totalswap;
unsigned long freeswap;
unsigned short procs;
unsigned long totalhigh;
unsigned long freehigh;
unsigned int mem_unit;
char _f[20 - 2 * sizeof(long) - sizeof(int)];
};
int sysinfo(struct sysinfo *info);
// Linux sysconf
long sysconf(int name);
#define _SC_NPROCESSORS_CONF 83
#define _SC_NPROCESSORS_ONLN 84
static void cache_sysinfo(void* context) {
struct sysinfo* cached_sysinfo = context;
if (sysinfo(cached_sysinfo) < 0) {
panic("Failed to retrieve sysinfo");
}
};
kern_return_t host_info(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t* count) {
static libsimple_once_t once_token = LIBSIMPLE_ONCE_INITIALIZER;
static struct sysinfo cached_sysinfo;
if (host == HOST_NULL) {
return KERN_INVALID_ARGUMENT;
}
switch (flavor) {
case HOST_BASIC_INFO: {
host_basic_info_t basic_info = (host_basic_info_t)info;
// need at least enough space for the legacy structure
if (*count < HOST_BASIC_INFO_OLD_COUNT) {
return KERN_FAILURE;
}
libsimple_once(&once_token, cache_sysinfo, &cached_sysinfo);
basic_info->memory_size = cached_sysinfo.totalram;
#if __x86_64__ || __i386__
basic_info->cpu_type = CPU_TYPE_X86;
basic_info->cpu_subtype = CPU_SUBTYPE_X86_ARCH1;
#else
#error Unknown CPU type
#endif
basic_info->max_cpus = sysconf(_SC_NPROCESSORS_CONF);
basic_info->avail_cpus = sysconf(_SC_NPROCESSORS_ONLN);
// if there's room for the modern structure, fill in some additional info
if (*count >= HOST_BASIC_INFO_COUNT) {
// TODO: properly differentiate physical vs. logical cores
dtape_stub_safe("modern HOST_BASIC_INFO");
basic_info->cpu_threadtype = CPU_THREADTYPE_NONE;
basic_info->physical_cpu = basic_info->avail_cpus;
basic_info->physical_cpu_max = basic_info->max_cpus;
basic_info->logical_cpu = basic_info->avail_cpus;
basic_info->logical_cpu_max = basic_info->max_cpus;
basic_info->max_mem = basic_info->memory_size;
*count = HOST_BASIC_INFO_COUNT;
} else {
*count = HOST_BASIC_INFO_OLD_COUNT;
}
return KERN_SUCCESS;
}
case HOST_DEBUG_INFO_INTERNAL:
return KERN_NOT_SUPPORTED;
case HOST_SCHED_INFO:
dtape_stub_unsafe("HOST_SCHED_INFO");
case HOST_RESOURCE_SIZES:
dtape_stub_unsafe("HOST_RESOURCE_SIZES");
case HOST_PRIORITY_INFO:
dtape_stub_unsafe("HOST_PRIORITY_INFO");
case HOST_PREFERRED_USER_ARCH:
dtape_stub_unsafe("HOST_PREFERRED_USER_ARCH");
case HOST_CAN_HAS_DEBUGGER:
dtape_stub_unsafe("HOST_CAN_HAS_DEBUGGER");
case HOST_VM_PURGABLE:
dtape_stub_unsafe("HOST_VM_PURGABLE");
case HOST_MACH_MSG_TRAP:
case HOST_SEMAPHORE_TRAPS:
*count = 0;
return KERN_SUCCESS;
default:
return KERN_INVALID_ARGUMENT;
}
};
kern_return_t host_default_memory_manager(host_priv_t host_priv, memory_object_default_t* default_manager, memory_object_cluster_size_t cluster_size) {
dtape_stub_unsafe();
};
kern_return_t host_get_boot_info(host_priv_t host_priv, kernel_boot_info_t boot_info) {
dtape_stub_unsafe();
};
kern_return_t host_get_UNDServer(host_priv_t host_priv, UNDServerRef* serverp) {
dtape_stub_unsafe();
};
kern_return_t host_set_UNDServer(host_priv_t host_priv, UNDServerRef server) {
dtape_stub_unsafe();
};
kern_return_t host_lockgroup_info(host_t host, lockgroup_info_array_t* lockgroup_infop, mach_msg_type_number_t* lockgroup_infoCntp) {
dtape_stub_unsafe();
};
kern_return_t host_reboot(host_priv_t host_priv, int options) {
dtape_stub_unsafe();
};
kern_return_t host_security_create_task_token(host_security_t host_security, task_t parent_task, security_token_t sec_token, audit_token_t audit_token, host_priv_t host_priv, ledger_port_array_t ledger_ports, mach_msg_type_number_t num_ledger_ports, boolean_t inherit_memory, task_t* child_task) {
dtape_stub_safe();
return KERN_NOT_SUPPORTED;
};
kern_return_t host_security_set_task_token(host_security_t host_security, task_t task, security_token_t sec_token, audit_token_t audit_token, host_priv_t host_priv) {
dtape_stub_unsafe();
};
kern_return_t host_virtual_physical_table_info(host_t host, hash_info_bucket_array_t* infop, mach_msg_type_number_t* countp) {
dtape_stub_unsafe();
};
kern_return_t host_statistics(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t vm_stats(void* info, unsigned int* count) {
dtape_stub_unsafe();
};

12
duct-tape/src/locks.c
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@ -226,6 +226,18 @@ void lck_ticket_assert_owned(lck_ticket_t* tlock) {
lck_spin_assert(&tlock->dtape_lock, LCK_ASSERT_OWNED);
};
//
// read-write lock
//
lck_rw_type_t lck_rw_done(lck_rw_t* lock) {
dtape_stub_unsafe();
};
void lck_rw_lock_exclusive(lck_rw_t* lock) {
dtape_stub_unsafe();
};
// <copied from="xnu://7195.141.2/osfmk/kern/locks.c">
/*

404
duct-tape/src/memory.c
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@ -1,4 +1,7 @@
#include <darlingserver/duct-tape/stubs.h>
#include <darlingserver/duct-tape/memory.h>
#include <darlingserver/duct-tape/task.h>
#include <darlingserver/duct-tape/hooks.h>
#include <kern/zalloc.h>
#include <kern/kalloc.h>
@ -6,6 +9,8 @@
#include <stdlib.h>
#include <mach_debug/mach_debug.h>
struct zone {
const char* name;
vm_size_t size;
@ -17,13 +22,14 @@ struct kalloc_heap KHEAP_DEFAULT[1];
struct kalloc_heap KHEAP_DATA_BUFFERS[1];
// stub
vm_map_t kernel_map;
vm_size_t kalloc_max_prerounded = 0;
void* calloc(size_t count, size_t size);
void* aligned_alloc(size_t alignment, size_t size);
void* mmap(void* addr, size_t length, int prot, int flags, int fd, long int offset);
int munmap(void* addr, size_t length);
long sysconf(int name);
#define MAP_ANONYMOUS 0x20
#define MAP_PRIVATE 0x02
@ -34,6 +40,44 @@ int munmap(void* addr, size_t length);
#define MAP_FAILED ((void*)-1)
#define _SC_PAGESIZE 30
void dtape_memory_init(void) {
};
vm_map_t dtape_vm_map_create(struct dtape_task* task) {
vm_map_t map = malloc(sizeof(struct _vm_map));
if (!map) {
return map;
}
os_ref_init(&map->map_refcnt, NULL);
map->max_offset = MACH_VM_MAX_ADDRESS;
map->dtape_page_shift = __builtin_ctzl(sysconf(_SC_PAGESIZE));
map->dtape_task = task;
return map;
};
void dtape_vm_map_destroy(vm_map_t map) {
if (os_ref_release(&map->map_refcnt) != 0) {
panic("VM map still in-use at destruction");
}
free(map);
};
void vm_map_reference(vm_map_t map) {
os_ref_retain(&map->map_refcnt);
};
void vm_map_deallocate(vm_map_t map) {
os_ref_release_live(&map->map_refcnt);
};
// TODO: zone-based allocations could be optimized to not just use malloc
zone_t zone_create(const char* name, vm_size_t size, zone_create_flags_t flags) {
@ -136,3 +180,361 @@ kern_return_t kernel_memory_allocate(vm_map_t map, vm_offset_t* addrp, vm_size_t
kern_return_t vm_deallocate(vm_map_t map, vm_offset_t start, vm_size_t size) {
return munmap((void*)start, size) == 0;
};
kern_return_t vm_allocate_kernel(vm_map_t map, vm_offset_t* addr, vm_size_t size, int flags, vm_tag_t tag) {
mach_vm_offset_t tmp;
kern_return_t status = mach_vm_allocate_kernel(map, &tmp, size, flags, tag);
if (status == KERN_SUCCESS) {
*addr = tmp;
}
return status;
};
kern_return_t kmem_alloc(vm_map_t map, vm_offset_t* addrp, vm_size_t size, vm_tag_t tag) {
return kernel_memory_allocate(map, addrp, size, 0, 0, tag);
};
void kmem_free(vm_map_t map, vm_offset_t addr, vm_size_t size) {
vm_deallocate(map, addr, size);
};
kern_return_t copyoutmap(vm_map_t map, void* fromdata, vm_map_address_t toaddr, vm_size_t length) {
if (map == kernel_map) {
memmove(fromdata, (void*)toaddr, length);
return KERN_SUCCESS;
} else {
return dtape_hooks->task_write_memory(map->dtape_task->context, toaddr, fromdata, length) ? KERN_SUCCESS : KERN_FAILURE;
}
};
kern_return_t copyinmap(vm_map_t map, vm_map_offset_t fromaddr, void* todata, vm_size_t length) {
if (map == kernel_map) {
memmove((void*)fromaddr, todata, length);
return KERN_SUCCESS;
} else {
return dtape_hooks->task_read_memory(map->dtape_task->context, fromaddr, todata, length) ? KERN_SUCCESS : KERN_FAILURE;
}
};
int (copyin)(const user_addr_t user_addr, void* kernel_addr, vm_size_t nbytes) {
return (copyinmap(current_map(), user_addr, kernel_addr, nbytes) == KERN_SUCCESS) ? 0 : 1;
};
int (copyout)(const void* kernel_addr, user_addr_t user_addr, vm_size_t nbytes) {
// it doesn't actually modify kernel_addr
return (copyoutmap(current_map(), (void*)kernel_addr, user_addr, nbytes) == KERN_SUCCESS) ? 0 : 1;
};
int copyinmsg(const user_addr_t user_addr, char* kernel_addr, mach_msg_size_t nbytes) {
return (copyin)(user_addr, kernel_addr, nbytes);
};
int copyoutmsg(const char* kernel_addr, user_addr_t user_addr, mach_msg_size_t nbytes) {
return (copyout)(kernel_addr, user_addr, nbytes);
};
kern_return_t kmem_suballoc(vm_map_t parent, vm_offset_t* addr, vm_size_t size, boolean_t pageable, int flags, vm_map_kernel_flags_t vmk_flags, vm_tag_t tag, vm_map_t* new_map) {
// this is enough to satisfy ipc_init
dtape_stub();
*new_map = parent;
return KERN_SUCCESS;
};
kern_return_t _mach_make_memory_entry(vm_map_t target_map, memory_object_size_t* size, memory_object_offset_t offset, vm_prot_t permission, ipc_port_t* object_handle, ipc_port_t parent_entry) {
dtape_stub_unsafe();
};
kern_return_t mach_memory_entry_access_tracking(ipc_port_t entry_port, int* access_tracking, uint32_t* access_tracking_reads, uint32_t* access_tracking_writes) {
dtape_stub_unsafe();
};
kern_return_t mach_memory_entry_ownership(ipc_port_t entry_port, task_t owner, int ledger_tag, int ledger_flags) {
dtape_stub_unsafe();
};
kern_return_t mach_memory_entry_purgable_control(ipc_port_t entry_port, vm_purgable_t control, int* state) {
dtape_stub_unsafe();
};
kern_return_t mach_memory_info(host_priv_t host, mach_zone_name_array_t* namesp, mach_msg_type_number_t* namesCntp, mach_zone_info_array_t* infop, mach_msg_type_number_t* infoCntp, mach_memory_info_array_t* memoryInfop, mach_msg_type_number_t* memoryInfoCntp) {
dtape_stub_unsafe();
};
kern_return_t mach_memory_object_memory_entry(host_t host, boolean_t internal, vm_size_t size, vm_prot_t permission, memory_object_t pager, ipc_port_t* entry_handle) {
dtape_stub_unsafe();
};
kern_return_t mach_memory_object_memory_entry_64(host_t host, boolean_t internal, vm_object_offset_t size, vm_prot_t permission, memory_object_t pager, ipc_port_t* entry_handle) {
dtape_stub_unsafe();
};
void pmap_require(pmap_t pmap) {
dtape_stub_safe();
};
kern_return_t vm_allocate_cpm(host_priv_t host_priv, vm_map_t map, vm_address_t* addr, vm_size_t size, int flags) {
dtape_stub_unsafe();
};
kern_return_t vm32_mapped_pages_info(vm_map_t map, page_address_array_t* pages, mach_msg_type_number_t* pages_count) {
dtape_stub_unsafe();
};
kern_return_t vm32_region_info(vm_map_t map, vm32_offset_t address, vm_info_region_t* regionp, vm_info_object_array_t* objectsp, mach_msg_type_number_t* objectsCntp) {
dtape_stub_unsafe();
};
kern_return_t vm32_region_info_64(vm_map_t map, vm32_offset_t address, vm_info_region_64_t* regionp, vm_info_object_array_t* objectsp, mach_msg_type_number_t* objectsCntp) {
dtape_stub_unsafe();
};
memory_object_t convert_port_to_memory_object(mach_port_t port) {
dtape_stub_unsafe();
};
vm_map_t convert_port_entry_to_map(ipc_port_t port) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_behavior_set(vm_map_t map, mach_vm_offset_t start, mach_vm_size_t size, vm_behavior_t new_behavior) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_copy(vm_map_t map, mach_vm_address_t source_address, mach_vm_size_t size, mach_vm_address_t dest_address) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_deallocate(vm_map_t map, mach_vm_offset_t start, mach_vm_size_t size) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_inherit(vm_map_t map, mach_vm_offset_t start, mach_vm_size_t size, vm_inherit_t new_inheritance) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_machine_attribute(vm_map_t map, mach_vm_address_t addr, mach_vm_size_t size, vm_machine_attribute_t attribute, vm_machine_attribute_val_t* value) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_map_external(vm_map_t target_map, mach_vm_offset_t* address, mach_vm_size_t initial_size, mach_vm_offset_t mask, int flags, ipc_port_t port, vm_object_offset_t offset, boolean_t copy, vm_prot_t cur_protection, vm_prot_t max_protection, vm_inherit_t inheritance) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_msync(vm_map_t map, mach_vm_address_t address, mach_vm_size_t size, vm_sync_t sync_flags) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_page_info(vm_map_t map, mach_vm_address_t address, vm_page_info_flavor_t flavor, vm_page_info_t info, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_page_query(vm_map_t map, mach_vm_offset_t offset, int* disposition, int* ref_count) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_page_range_query(vm_map_t map, mach_vm_offset_t address, mach_vm_size_t size, mach_vm_address_t dispositions_addr, mach_vm_size_t* dispositions_count) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_protect(vm_map_t map, mach_vm_offset_t start, mach_vm_size_t size, boolean_t set_maximum, vm_prot_t new_protection) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_purgable_control(vm_map_t map, mach_vm_offset_t address, vm_purgable_t control, int* state) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_read(vm_map_t map, mach_vm_address_t addr, mach_vm_size_t size, pointer_t* data, mach_msg_type_number_t* data_size) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_read_list(vm_map_t map, mach_vm_read_entry_t data_list, natural_t count) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_read_overwrite(vm_map_t map, mach_vm_address_t address, mach_vm_size_t size, mach_vm_address_t data, mach_vm_size_t* data_size) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_region(vm_map_t map, mach_vm_offset_t* address, mach_vm_size_t* size, vm_region_flavor_t flavor, vm_region_info_t info, mach_msg_type_number_t* count, mach_port_t* object_name) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_region_recurse(vm_map_t map, mach_vm_address_t* address, mach_vm_size_t* size, uint32_t* depth, vm_region_recurse_info_t info, mach_msg_type_number_t* infoCnt) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_remap_external(vm_map_t target_map, mach_vm_offset_t* address, mach_vm_size_t size, mach_vm_offset_t mask, int flags, vm_map_t src_map, mach_vm_offset_t memory_address, boolean_t copy, vm_prot_t* cur_protection, vm_prot_t* max_protection, vm_inherit_t inheritance) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_remap_new_external(vm_map_t target_map, mach_vm_offset_t* address, mach_vm_size_t size, mach_vm_offset_t mask, int flags, mach_port_t src_tport, mach_vm_offset_t memory_address, boolean_t copy, vm_prot_t* cur_protection, vm_prot_t* max_protection, vm_inherit_t inheritance) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_wire_external(host_priv_t host_priv, vm_map_t map, mach_vm_offset_t start, mach_vm_size_t size, vm_prot_t access) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_write(vm_map_t map, mach_vm_address_t address, pointer_t data, mach_msg_type_number_t size) {
dtape_stub_unsafe();
};
kern_return_t mach_vm_allocate_kernel(vm_map_t map, mach_vm_offset_t* addr, mach_vm_size_t size, int flags, vm_tag_t tag) {
dtape_stub_unsafe();
};
kern_return_t mach_zone_force_gc(host_t host) {
dtape_stub_unsafe();
};
kern_return_t mach_zone_get_btlog_records(host_priv_t host, mach_zone_name_t name, zone_btrecord_array_t* recsp, mach_msg_type_number_t* recsCntp) {
dtape_stub_safe();
return KERN_FAILURE;
};
kern_return_t mach_zone_get_zlog_zones(host_priv_t host, mach_zone_name_array_t* namesp, mach_msg_type_number_t* namesCntp) {
dtape_stub_safe();
return KERN_FAILURE;
};
kern_return_t mach_zone_info(host_priv_t host, mach_zone_name_array_t* namesp, mach_msg_type_number_t* namesCntp, mach_zone_info_array_t* infop, mach_msg_type_number_t* infoCntp) {
dtape_stub_unsafe();
};
kern_return_t mach_zone_info_for_largest_zone(host_priv_t host, mach_zone_name_t* namep, mach_zone_info_t* infop) {
dtape_stub_unsafe();
};
kern_return_t mach_zone_info_for_zone(host_priv_t host, mach_zone_name_t name, mach_zone_info_t* infop) {
dtape_stub_unsafe();
};
boolean_t vm_kernel_map_is_kernel(vm_map_t map) {
dtape_stub_unsafe();
};
kern_return_t vm_map_copyin_common(vm_map_t src_map, vm_map_address_t src_addr, vm_map_size_t len, boolean_t src_destroy, boolean_t src_volatile, vm_map_copy_t* copy_result, boolean_t use_maxprot) {
dtape_stub_unsafe();
};
kern_return_t vm_map_copyout_size(vm_map_t dst_map, vm_map_address_t* dst_addr, vm_map_copy_t copy, vm_map_size_t copy_size) {
dtape_stub_unsafe();
};
kern_return_t vm_map_copy_overwrite(vm_map_t dst_map, vm_map_offset_t dst_addr, vm_map_copy_t copy, vm_map_size_t copy_size, boolean_t interruptible) {
dtape_stub_unsafe();
};
boolean_t vm_map_copy_validate_size(vm_map_t dst_map, vm_map_copy_t copy, vm_map_size_t* size) {
dtape_stub_unsafe();
};
kern_return_t vm_map_page_query_internal(vm_map_t target_map, vm_map_offset_t offset, int* disposition, int* ref_count) {
dtape_stub_unsafe();
};
kern_return_t vm_map_purgable_control(vm_map_t map, vm_map_offset_t address, vm_purgable_t control, int* state) {
dtape_stub_unsafe();
};
void vm_map_read_deallocate(vm_map_read_t map) {
dtape_stub_unsafe();
};
kern_return_t vm_map_region(vm_map_t map, vm_map_offset_t* address, vm_map_size_t* size, vm_region_flavor_t flavor, vm_region_info_t info, mach_msg_type_number_t* count, mach_port_t* object_name) {
dtape_stub_unsafe();
};
kern_return_t vm_map_region_recurse_64(vm_map_t map, vm_map_offset_t* address, vm_map_size_t* size, natural_t* nesting_depth, vm_region_submap_info_64_t submap_info, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t vm_map_unwire(vm_map_t map, vm_map_offset_t start, vm_map_offset_t end, boolean_t user_wire) {
dtape_stub_unsafe();
};
kern_return_t vm_map_wire_kernel(vm_map_t map, vm_map_offset_t start, vm_map_offset_t end, vm_prot_t caller_prot, vm_tag_t tag, boolean_t user_wire) {
dtape_stub_unsafe();
};
kern_return_t vm32__task_wire(vm_map_t map, boolean_t must_wire) {
dtape_stub_unsafe();
};
kern_return_t vm32__map_exec_lockdown(vm_map_t map) {
dtape_stub_unsafe();
};
// <copied from="xnu://7195.141.2/osfmk/vm/vm_user.c">
/*
* mach_vm_allocate allocates "zero fill" memory in the specfied
* map.
*/
kern_return_t
mach_vm_allocate_external(
vm_map_t map,
mach_vm_offset_t *addr,
mach_vm_size_t size,
int flags)
{
vm_tag_t tag;
VM_GET_FLAGS_ALIAS(flags, tag);
return mach_vm_allocate_kernel(map, addr, size, flags, tag);
}
/*
* vm_wire -
* Specify that the range of the virtual address space
* of the target task must not cause page faults for
* the indicated accesses.
*
* [ To unwire the pages, specify VM_PROT_NONE. ]
*/
kern_return_t
vm_wire(
host_priv_t host_priv,
vm_map_t map,
vm_offset_t start,
vm_size_t size,
vm_prot_t access)
{
kern_return_t rc;
if (host_priv == HOST_PRIV_NULL) {
return KERN_INVALID_HOST;
}
if (map == VM_MAP_NULL) {
return KERN_INVALID_TASK;
}
if ((access & ~VM_PROT_ALL) || (start + size < start)) {
return KERN_INVALID_ARGUMENT;
}
if (size == 0) {
rc = KERN_SUCCESS;
} else if (access != VM_PROT_NONE) {
rc = vm_map_wire_kernel(map,
vm_map_trunc_page(start,
VM_MAP_PAGE_MASK(map)),
vm_map_round_page(start + size,
VM_MAP_PAGE_MASK(map)),
access, VM_KERN_MEMORY_OSFMK,
TRUE);
} else {
rc = vm_map_unwire(map,
vm_map_trunc_page(start,
VM_MAP_PAGE_MASK(map)),
vm_map_round_page(start + size,
VM_MAP_PAGE_MASK(map)),
TRUE);
}
return rc;
}
// </copied>

70
duct-tape/src/misc.c
View File

@ -1,6 +1,9 @@
#include <darlingserver/duct-tape.h>
#include <darlingserver/duct-tape/hooks.h>
#include <darlingserver/duct-tape/log.h>
#include <darlingserver/duct-tape/processor.h>
#include <darlingserver/duct-tape/memory.h>
#include <darlingserver/duct-tape/task.h>
#include <kern/waitq.h>
#include <kern/clock.h>
@ -15,35 +18,69 @@
#include <sys/types.h>
const dtape_hooks_t* dtape_hooks;
char version[] = "Darling 11.5";
int vsnprintf(char* buffer, size_t buffer_size, const char* format, va_list args);
ssize_t getrandom(void* buf, size_t buflen, unsigned int flags);
void ipc_table_init(void);
void ipc_init(void);
void mig_init(void);
void host_notify_init(void);
void user_data_attr_manager_init(void);
void ipc_voucher_init(void);
void dtape_logv(dtape_log_level_t level, const char* format, va_list args) {
char message[4096];
vsnprintf(message, sizeof(message), format, args);
dtape_hooks->log(level, message);
};
void dtape_log(dtape_log_level_t level, const char* format, ...) {
char message[4096];
va_list args;
va_start(args, format);
vsnprintf(message, sizeof(message), format, args);
dtape_logv(level, format, args);
va_end(args);
dtape_hooks->log(level, message);
};
void dtape_init(const dtape_hooks_t* hooks) {
dtape_hooks = hooks;
ipc_space_zone = zone_create("ipc spaces", sizeof(struct ipc_space), ZC_NOENCRYPT);
dtape_log_debug("dtape_processor_init");
dtape_processor_init();
ipc_table_init();
dtape_log_debug("dtape_memory_init");
dtape_memory_init();
ipc_space_zone = zone_create("ipc spaces", sizeof(struct ipc_space), ZC_NOENCRYPT);
ipc_kmsg_zone = zone_create("ipc kmsgs", IKM_SAVED_KMSG_SIZE, ZC_CACHING | ZC_ZFREE_CLEARMEM);
ipc_object_zones[IOT_PORT] = zone_create("ipc ports", sizeof(struct ipc_port), ZC_NOENCRYPT | ZC_CACHING | ZC_ZFREE_CLEARMEM | ZC_NOSEQUESTER);
ipc_object_zones[IOT_PORT_SET] = zone_create("ipc port sets", sizeof(struct ipc_pset), ZC_NOENCRYPT | ZC_ZFREE_CLEARMEM | ZC_NOSEQUESTER);
lck_mtx_init(&realhost.lock, LCK_GRP_NULL, LCK_ATTR_NULL);
dtape_log_debug("ipc_table_init");
ipc_table_init();
dtape_log_debug("ipc_voucher_init");
ipc_voucher_init();
dtape_log_debug("dtape_task_init");
dtape_task_init();
dtape_log_debug("ipc_init");
ipc_init();
dtape_log_debug("mig_init");
mig_init();
dtape_log_debug("host_notify_init");
host_notify_init();
dtape_log_debug("user_data_attr_manager_init");
user_data_attr_manager_init();
dtape_log_debug("waitq_bootstrap");
waitq_bootstrap();
@ -70,3 +107,22 @@ void dtape_deinit(void) {
void read_frandom(void* buffer, unsigned int numBytes) {
getrandom(buffer, numBytes, 0);
};
void kprintf(const char* fmt, ...) {
va_list args;
va_start(args, fmt);
dtape_logv(dtape_log_level_info, fmt, args);
va_end(args);
};
int scnprintf(char* buffer, size_t buffer_size, const char* format, ...) {
va_list args;
va_start(args, format);
int code = vsnprintf(buffer, buffer_size, format, args);
va_end(args);
if (code < 0) {
return code;
} else {
return strnlen(buffer, buffer_size);
}
};

98
duct-tape/src/processor.c Normal file
View File

@ -0,0 +1,98 @@
#include <darlingserver/duct-tape/stubs.h>
#include <kern/processor.h>
#include <kern/kalloc.h>
processor_t processor_array[MAX_SCHED_CPUS] = {0};
struct processor_set pset0;
uint32_t processor_avail_count;
uint32_t processor_avail_count_user;
uint32_t primary_processor_avail_count;
uint32_t primary_processor_avail_count_user;
unsigned int processor_count;
simple_lock_data_t processor_list_lock;
processor_t master_processor;
void dtape_processor_init(void) {
simple_lock_init(&processor_list_lock, 0);
master_processor = kalloc(sizeof(*master_processor));
memset(master_processor, 0, sizeof(*master_processor));
};
kern_return_t processor_assign(processor_t processor, processor_set_t new_pset, boolean_t wait) {
dtape_stub_safe();
return KERN_FAILURE;
};
kern_return_t processor_control(processor_t processor, processor_info_t info, mach_msg_type_number_t count) {
dtape_stub_unsafe();
};
kern_return_t processor_exit_from_user(processor_t processor) {
dtape_stub_unsafe();
};
kern_return_t processor_get_assignment(processor_t processor, processor_set_t* pset) {
dtape_stub_unsafe();
};
kern_return_t processor_info(processor_t processor, processor_flavor_t flavor, host_t* host, processor_info_t info, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t processor_info_count(processor_flavor_t flavor, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t processor_set_create(host_t host, processor_set_t* new_set, processor_set_t* new_name) {
dtape_stub_unsafe();
};
kern_return_t processor_set_destroy(processor_set_t pset) {
dtape_stub_unsafe();
};
kern_return_t processor_set_info(processor_set_t pset, int flavor, host_t* host, processor_set_info_t info, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t processor_set_max_priority(processor_set_t pset, int max_priority, boolean_t change_threads) {
dtape_stub_unsafe();
};
kern_return_t processor_set_policy_control(processor_set_t pset, int flavor, processor_set_info_t policy_info, mach_msg_type_number_t count, boolean_t change) {
dtape_stub_unsafe();
};
kern_return_t processor_set_policy_disable(processor_set_t pset, int policy, boolean_t change_threads) {
dtape_stub_unsafe();
};
kern_return_t processor_set_policy_enable(processor_set_t pset, int policy) {
dtape_stub_unsafe();
};
kern_return_t processor_set_stack_usage(processor_set_t pset, unsigned int* totalp, vm_size_t* spacep, vm_size_t* residentp, vm_size_t* maxusagep, vm_offset_t* maxstackp) {
dtape_stub_unsafe();
};
kern_return_t processor_set_statistics(processor_set_t pset, int flavor, processor_set_info_t info, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t processor_set_tasks(processor_set_t pset, task_array_t* task_list, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t processor_set_tasks_with_flavor(processor_set_t pset, mach_task_flavor_t flavor, task_array_t* task_list, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t processor_set_threads(processor_set_t pset, thread_array_t* thread_list, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t processor_start_from_user(processor_t processor) {
dtape_stub_unsafe();
};

60
duct-tape/src/stubs.c
View File

@ -7,7 +7,17 @@
#include <sys/file_internal.h>
#include <pthread/workqueue_internal.h>
#include <kern/host.h>
#include <mach_debug/lockgroup_info.h>
unsigned int kdebug_enable = 0;
uint32_t avenrun[3] = {0};
uint32_t mach_factor[3] = {0};
vm_object_t compressor_object;
uint32_t c_segment_pages_compressed;
expired_task_statistics_t dead_task_statistics;
struct machine_info machine_info;
int sched_allow_NO_SMT_threads;
#undef panic
@ -23,7 +33,7 @@ int fflush(FILE* stream);
#define DTAPE_FATAL_STUBS 0
#endif
void dtape_stub_log(const char* function_name, int safety) {
void dtape_stub_log(const char* function_name, int safety, const char* subsection) {
dtape_log_level_t log_level;
bool do_abort;
const char* kind_info;
@ -46,7 +56,7 @@ void dtape_stub_log(const char* function_name, int safety) {
kind_info = " (safe)";
}
dtape_log(log_level, "stub%s: %s", kind_info, function_name);
dtape_log(log_level, "stub%s: %s%s%s", kind_info, function_name, subsection[0] == '\0' ? "" : ":", subsection);
if (do_abort) {
abort();
@ -171,3 +181,49 @@ boolean_t machine_timeout_suspended(void) {
dtape_stub_safe();
return true;
};
boolean_t IOTaskHasEntitlement(task_t task, const char* entitlement) {
dtape_stub_safe();
return TRUE;
};
kern_return_t kmod_create(host_priv_t host_priv, vm_address_t addr, kmod_t* id) {
dtape_stub_safe();
return KERN_NOT_SUPPORTED;
};
kern_return_t kmod_destroy(host_priv_t host_priv, kmod_t id) {
dtape_stub_safe();
return KERN_NOT_SUPPORTED;
};
kern_return_t kmod_control(host_priv_t host_priv, kmod_t id, kmod_control_flavor_t flavor, kmod_args_t* data, mach_msg_type_number_t* dataCount) {
dtape_stub_safe();
return KERN_NOT_SUPPORTED;
};
kern_return_t kmod_get_info(host_t host, kmod_info_array_t* kmod_list, mach_msg_type_number_t* kmodCount) {
dtape_stub_safe();
return KERN_NOT_SUPPORTED;
};
kern_return_t kext_request(host_priv_t hostPriv, uint32_t clientLogSpec, vm_offset_t requestIn, mach_msg_type_number_t requestLengthIn, vm_offset_t* responseOut, mach_msg_type_number_t* responseLengthOut, vm_offset_t* logDataOut, mach_msg_type_number_t* logDataLengthOut, kern_return_t* op_result) {
dtape_stub_unsafe();
};
uint32_t PE_i_can_has_debugger(uint32_t* something) {
dtape_stub_unsafe();
};
bool work_interval_port_type_render_server(mach_port_name_t port_name) {
dtape_stub_safe();
return false;
};
ipc_port_t convert_suid_cred_to_port(suid_cred_t sc) {
dtape_stub_unsafe();
};
kern_return_t handle_ux_exception(thread_t thread, int exception, mach_exception_code_t code, mach_exception_subcode_t subcode) {
dtape_stub_unsafe();
};

450
duct-tape/src/task.c
View File

@ -1,17 +1,41 @@
#include <darlingserver/duct-tape/stubs.h>
#include <darlingserver/duct-tape.h>
#include <darlingserver/duct-tape/task.h>
#include <darlingserver/duct-tape/memory.h>
#include <kern/task.h>
#include <kern/ipc_tt.h>
#include <kern/policy_internal.h>
#include <ipc/ipc_importance.h>
#include <kern/restartable.h>
#include <stdlib.h>
// stub
task_t kernel_task;
task_t kernel_task = NULL;
void dtape_task_init(void) {
// this will assign to kernel_task
if (!dtape_task_create(NULL, 0, NULL)) {
panic("Failed to create kernel task");
}
};
dtape_task_handle_t dtape_task_create(dtape_task_handle_t xparent_task, uint32_t nsid, void* context) {
if (xparent_task == NULL && nsid == 0 && kernel_task) {
dtape_task_t* task = dtape_task_for_xnu_task(kernel_task);
// don't acquire an additional reference;
// the managing Task instance acquires ownership of the kernel task
//task_reference(kernel_task);
if (task->context) {
panic("The kernel task already has a context");
} else {
task->context = context;
}
return task;
}
dtape_task_t* parent_task = xparent_task;
dtape_task_t* task = malloc(sizeof(dtape_task_t));
if (!task) {
@ -24,16 +48,26 @@ dtape_task_handle_t dtape_task_create(dtape_task_handle_t xparent_task, uint32_t
// this next section uses code adapted from XNU's task_create_internal() in osfmk/kern/task.c
os_ref_init_count(&task->xnu_task.ref_count, NULL, 1);
os_ref_init(&task->xnu_task.ref_count, NULL);
lck_mtx_init(&task->xnu_task.lock, LCK_GRP_NULL, LCK_ATTR_NULL);
queue_init(&task->xnu_task.threads);
task->xnu_task.active = true;
task->xnu_task.map = dtape_vm_map_create(task);
ipc_task_init(&task->xnu_task, parent_task ? &parent_task->xnu_task : NULL);
ipc_task_enable(&task->xnu_task);
if (xparent_task == NULL && nsid == 0) {
if (kernel_task) {
panic("Another kernel task has been created");
}
kernel_task = &task->xnu_task;
}
return task;
};
@ -48,6 +82,8 @@ void dtape_task_destroy(dtape_task_handle_t xtask) {
ipc_task_terminate(&task->xnu_task);
dtape_vm_map_destroy(task->xnu_task.map);
lck_mtx_destroy(&task->xnu_task.lock, LCK_GRP_NULL);
};
@ -63,6 +99,19 @@ int pid_from_task(task_t xtask) {
return task->saved_pid;
};
int proc_get_effective_task_policy(task_t task, int flavor) {
dtape_stub();
if (flavor == TASK_POLICY_ROLE) {
return TASK_UNSPECIFIED;
} else {
panic("Unimplemented proc_get_effective_task_policy flavor: %d", flavor);
}
};
int task_pid(task_t task) {
return pid_from_task(task);
};
void task_id_token_notify(mach_msg_header_t* msg) {
dtape_stub();
};
@ -91,3 +140,398 @@ void task_update_boost_locked(task_t task, boolean_t boost_active, task_pend_tok
void task_watchport_elem_deallocate(struct task_watchport_elem* watchport_elem) {
dtape_stub();
};
kern_return_t task_create_suid_cred(task_t task, suid_cred_path_t path, suid_cred_uid_t uid, suid_cred_t* sc_p) {
dtape_stub_unsafe();
};
kern_return_t task_create_identity_token(task_t task, task_id_token_t* tokenp) {
dtape_stub_unsafe();
};
ipc_port_t convert_task_id_token_to_port(task_id_token_t token) {
dtape_stub_unsafe();
};
task_id_token_t convert_port_to_task_id_token(ipc_port_t port) {
dtape_stub_unsafe();
};
kern_return_t task_identity_token_get_task_port(task_id_token_t token, task_flavor_t flavor, ipc_port_t* portp) {
dtape_stub_unsafe();
};
void task_id_token_release(task_id_token_t token) {
dtape_stub_unsafe();
};
kern_return_t task_dyld_process_info_notify_deregister(task_t task, mach_port_name_t rcv_name) {
dtape_stub_unsafe();
};
kern_return_t task_dyld_process_info_notify_register(task_t task, ipc_port_t sright) {
dtape_stub_unsafe();
};
kern_return_t task_generate_corpse(task_t task, ipc_port_t* corpse_task_port) {
dtape_stub_unsafe();
};
kern_return_t task_get_assignment(task_t task, processor_set_t* pset) {
dtape_stub_unsafe();
};
kern_return_t task_get_state(task_t task, int flavor, thread_state_t state, mach_msg_type_number_t* state_count) {
dtape_stub_unsafe();
};
kern_return_t task_info_from_user(mach_port_t task_port, task_flavor_t flavor, task_info_t task_info_out, mach_msg_type_number_t* task_info_count) {
dtape_stub_unsafe();
};
kern_return_t task_inspect(task_inspect_t task_insp, task_inspect_flavor_t flavor, task_inspect_info_t info_out, mach_msg_type_number_t* size_in_out) {
dtape_stub_safe();
return KERN_FAILURE;
};
bool task_is_driver(task_t task) {
dtape_stub_safe();
return false;
};
kern_return_t task_map_corpse_info(task_t task, task_t corpse_task, vm_address_t* kcd_addr_begin, uint32_t* kcd_size) {
dtape_stub_unsafe();
};
kern_return_t task_map_corpse_info_64(task_t task, task_t corpse_task, mach_vm_address_t* kcd_addr_begin, mach_vm_size_t* kcd_size) {
dtape_stub_unsafe();
};
void task_name_deallocate(task_name_t task_name) {
dtape_stub_unsafe();
};
kern_return_t task_policy_get(task_t task, task_policy_flavor_t flavor, task_policy_t policy_info, mach_msg_type_number_t* count, boolean_t* get_default) {
dtape_stub_unsafe();
};
void task_policy_get_deallocate(task_policy_get_t task_policy_get) {
dtape_stub_unsafe();
};
kern_return_t task_policy_set(task_t task, task_policy_flavor_t flavor, task_policy_t policy_info, mach_msg_type_number_t count) {
dtape_stub_unsafe();
};
void task_policy_set_deallocate(task_policy_set_t task_policy_set) {
dtape_stub_unsafe();
};
kern_return_t task_purgable_info(task_t task, task_purgable_info_t* stats) {
dtape_stub_unsafe();
};
void task_read_deallocate(task_read_t task_read) {
dtape_stub_unsafe();
};
kern_return_t task_register_dyld_image_infos(task_t task, dyld_kernel_image_info_array_t infos_copy, mach_msg_type_number_t infos_len) {
dtape_stub_unsafe();
};
kern_return_t task_register_dyld_shared_cache_image_info(task_t task, dyld_kernel_image_info_t cache_img, boolean_t no_cache, boolean_t private_cache) {
dtape_stub_unsafe();
};
kern_return_t task_restartable_ranges_register(task_t task, task_restartable_range_t* ranges, mach_msg_type_number_t count) {
dtape_stub_unsafe();
};
kern_return_t task_restartable_ranges_synchronize(task_t task) {
dtape_stub_unsafe();
};
kern_return_t task_resume(task_t task) {
dtape_stub_unsafe();
};
kern_return_t task_resume2(task_suspension_token_t task) {
dtape_stub_unsafe();
};
kern_return_t task_set_exc_guard_behavior(task_t task, task_exc_guard_behavior_t behavior) {
dtape_stub_unsafe();
};
kern_return_t task_set_info(task_t task, task_flavor_t flavor, task_info_t task_info_in, mach_msg_type_number_t task_info_count) {
dtape_stub_unsafe();
};
kern_return_t task_set_phys_footprint_limit(task_t task, int new_limit_mb, int* old_limit_mb) {
dtape_stub_unsafe();
};
kern_return_t task_set_state(task_t task, int flavor, thread_state_t state, mach_msg_type_number_t state_count) {
dtape_stub_unsafe();
};
kern_return_t task_suspend(task_t task) {
dtape_stub_unsafe();
};
kern_return_t task_suspend2(task_t task, task_suspension_token_t* suspend_token) {
dtape_stub_unsafe();
};
void task_suspension_token_deallocate(task_suspension_token_t token) {
dtape_stub_unsafe();
};
kern_return_t task_terminate(task_t task) {
dtape_stub_unsafe();
};
kern_return_t task_threads_from_user(mach_port_t port, thread_act_array_t* threads_out, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
kern_return_t task_unregister_dyld_image_infos(task_t task, dyld_kernel_image_info_array_t infos_copy, mach_msg_type_number_t infos_len) {
dtape_stub_unsafe();
};
// <copied from="xnu://7195.141.2/osfmk/kern/task_policy.c">
/*
* Check if this task should donate importance.
*
* May be called without taking the task lock. In that case, donor status can change
* so you must check only once for each donation event.
*/
boolean_t
task_is_importance_donor(task_t task)
{
if (task->task_imp_base == IIT_NULL) {
return FALSE;
}
return ipc_importance_task_is_donor(task->task_imp_base);
}
/*
* task_policy
*
* Set scheduling policy and parameters, both base and limit, for
* the given task. Policy must be a policy which is enabled for the
* processor set. Change contained threads if requested.
*/
kern_return_t
task_policy(
__unused task_t task,
__unused policy_t policy_id,
__unused policy_base_t base,
__unused mach_msg_type_number_t count,
__unused boolean_t set_limit,
__unused boolean_t change)
{
return KERN_FAILURE;
}
// </copied>
// <copied from="xnu://7195.141.2/osfmk/kern/task.c">
boolean_t
task_get_filter_msg_flag(
task_t task)
{
uint32_t flags = 0;
if (!task) {
return false;
}
flags = os_atomic_load(&task->t_flags, relaxed);
return (flags & TF_FILTER_MSG) ? TRUE : FALSE;
}
/*
* task_assign:
*
* Change the assigned processor set for the task
*/
kern_return_t
task_assign(
__unused task_t task,
__unused processor_set_t new_pset,
__unused boolean_t assign_threads)
{
return KERN_FAILURE;
}
/*
* task_assign_default:
*
* Version of task_assign to assign to default processor set.
*/
kern_return_t
task_assign_default(
task_t task,
boolean_t assign_threads)
{
return task_assign(task, &pset0, assign_threads);
}
kern_return_t
task_create(
task_t parent_task,
__unused ledger_port_array_t ledger_ports,
__unused mach_msg_type_number_t num_ledger_ports,
__unused boolean_t inherit_memory,
__unused task_t *child_task) /* OUT */
{
if (parent_task == TASK_NULL) {
return KERN_INVALID_ARGUMENT;
}
/*
* No longer supported: too many calls assume that a task has a valid
* process attached.
*/
return KERN_FAILURE;
}
kern_return_t
task_get_dyld_image_infos(__unused task_t task,
__unused dyld_kernel_image_info_array_t * dyld_images,
__unused mach_msg_type_number_t * dyld_imagesCnt)
{
return KERN_NOT_SUPPORTED;
}
kern_return_t
task_get_exc_guard_behavior(
task_t task,
task_exc_guard_behavior_t *behaviorp)
{
if (task == TASK_NULL) {
return KERN_INVALID_TASK;
}
*behaviorp = task->task_exc_guard;
return KERN_SUCCESS;
}
/* Placeholders for the task set/get voucher interfaces */
kern_return_t
task_get_mach_voucher(
task_t task,
mach_voucher_selector_t __unused which,
ipc_voucher_t *voucher)
{
if (TASK_NULL == task) {
return KERN_INVALID_TASK;
}
*voucher = NULL;
return KERN_SUCCESS;
}
kern_return_t
task_set_mach_voucher(
task_t task,
ipc_voucher_t __unused voucher)
{
if (TASK_NULL == task) {
return KERN_INVALID_TASK;
}
return KERN_SUCCESS;
}
kern_return_t
task_swap_mach_voucher(
__unused task_t task,
__unused ipc_voucher_t new_voucher,
ipc_voucher_t *in_out_old_voucher)
{
/*
* Currently this function is only called from a MIG generated
* routine which doesn't release the reference on the voucher
* addressed by in_out_old_voucher. To avoid leaking this reference,
* a call to release it has been added here.
*/
ipc_voucher_release(*in_out_old_voucher);
return KERN_NOT_SUPPORTED;
}
/*
* task_inspect_deallocate:
*
* Drop a task inspection reference.
*/
void
task_inspect_deallocate(
task_inspect_t task_inspect)
{
return task_deallocate((task_t)task_inspect);
}
kern_return_t
task_register_dyld_set_dyld_state(__unused task_t task,
__unused uint8_t dyld_state)
{
return KERN_NOT_SUPPORTED;
}
kern_return_t
task_register_dyld_get_process_state(__unused task_t task,
__unused dyld_kernel_process_info_t * dyld_process_state)
{
return KERN_NOT_SUPPORTED;
}
/*
* task_set_policy
*
* Set scheduling policy and parameters, both base and limit, for
* the given task. Policy can be any policy implemented by the
* processor set, whether enabled or not. Change contained threads
* if requested.
*/
kern_return_t
task_set_policy(
__unused task_t task,
__unused processor_set_t pset,
__unused policy_t policy_id,
__unused policy_base_t base,
__unused mach_msg_type_number_t base_count,
__unused policy_limit_t limit,
__unused mach_msg_type_number_t limit_count,
__unused boolean_t change)
{
return KERN_FAILURE;
}
kern_return_t
task_set_ras_pc(
__unused task_t task,
__unused vm_offset_t pc,
__unused vm_offset_t endpc)
{
return KERN_FAILURE;
}
// </copied>
// <copied from="xnu://7195.141.2/osfmk/kern/zalloc.c">
kern_return_t
task_zone_info(
__unused task_t task,
__unused mach_zone_name_array_t *namesp,
__unused mach_msg_type_number_t *namesCntp,
__unused task_zone_info_array_t *infop,
__unused mach_msg_type_number_t *infoCntp)
{
return KERN_FAILURE;
}
// </copied>

218
duct-tape/src/thread.c
View File

@ -64,6 +64,8 @@ dtape_thread_handle_t dtape_thread_create(dtape_task_handle_t xtask, uint64_t ns
thread->xnu_thread.thread_id = nsid;
thread->xnu_thread.map = task->xnu_task.map;
return thread;
};
@ -200,6 +202,22 @@ void thread_set_thread_name(thread_t xthread, const char* name) {
thread->name = name;
};
__attribute__((noreturn))
void thread_syscall_return(kern_return_t ret) {
dtape_stub_unsafe();
};
thread_qos_t thread_get_requested_qos(thread_t thread, int* relpri) {
dtape_stub_safe();
*relpri = 0;
return THREAD_QOS_DEFAULT;
};
thread_qos_t thread_user_promotion_qos_for_pri(int priority) {
dtape_stub_safe();
return THREAD_QOS_DEFAULT;
};
void thread_guard_violation(thread_t thread, mach_exception_data_type_t code, mach_exception_data_type_t subcode, boolean_t fatal) {
dtape_stub();
};
@ -234,32 +252,94 @@ void sched_thread_unpromote_reason(thread_t thread, uint32_t reason, uintptr_t t
dtape_stub_safe();
};
#if 0
kern_return_t thread_wakeup_prim(event_t event, boolean_t one_thread, wait_result_t result) {
dtape_stub();
return KERN_FAILURE;
void thread_poll_yield(thread_t self) {
dtape_stub_safe();
};
kern_return_t thread_wakeup_thread(event_t event, thread_t thread) {
dtape_stub();
return KERN_FAILURE;
kern_return_t act_get_state_to_user(thread_t thread, int flavor, thread_state_t state, mach_msg_type_number_t* count) {
dtape_stub_unsafe();
};
wait_result_t assert_wait_deadline(event_t event, wait_interrupt_t interruptible, uint64_t deadline) {
dtape_stub();
return THREAD_WAITING;
kern_return_t act_set_state_from_user(thread_t thread, int flavor, thread_state_t state, mach_msg_type_number_t count) {
dtape_stub_unsafe();
};
wait_result_t assert_wait_deadline_with_leeway(event_t event, wait_interrupt_t interruptible, wait_timeout_urgency_t urgency, uint64_t deadline, uint64_t leeway) {
dtape_stub();
return THREAD_WAITING;
kern_return_t thread_abort(thread_t thread) {
dtape_stub_unsafe();
};
kern_return_t clear_wait(thread_t thread, wait_result_t result) {
dtape_stub();
return KERN_FAILURE;
kern_return_t thread_abort_safely(thread_t thread) {
dtape_stub_unsafe();
};
kern_return_t thread_convert_thread_state(thread_t thread, int direction, thread_state_flavor_t flavor, thread_state_t in_state, mach_msg_type_number_t in_state_count, thread_state_t out_state, mach_msg_type_number_t* out_state_count) {
dtape_stub_unsafe();
};
kern_return_t thread_create_from_user(task_t task, thread_t* new_thread) {
dtape_stub_unsafe();
};
kern_return_t thread_create_running_from_user(task_t task, int flavor, thread_state_t new_state, mach_msg_type_number_t new_state_count, thread_t* new_thread) {
dtape_stub_unsafe();
};
kern_return_t thread_depress_abort_from_user(thread_t thread) {
dtape_stub_safe();
return KERN_SUCCESS;
};
kern_return_t thread_get_state_to_user(thread_t thread, int flavor, thread_state_t state, mach_msg_type_number_t* state_count) {
dtape_stub_unsafe();
};
kern_return_t thread_info(thread_t thread, thread_flavor_t flavor, thread_info_t thread_info_out, mach_msg_type_number_t* thread_info_count) {
dtape_stub_unsafe();
};
void thread_inspect_deallocate(thread_inspect_t thread_inspect) {
dtape_stub_unsafe();
};
kern_return_t thread_policy(thread_t thread, policy_t policy, policy_base_t base, mach_msg_type_number_t count, boolean_t set_limit) {
dtape_stub_unsafe();
};
kern_return_t thread_policy_get(thread_t thread, thread_policy_flavor_t flavor, thread_policy_t policy_info, mach_msg_type_number_t* count, boolean_t* get_default) {
dtape_stub_unsafe();
};
kern_return_t thread_policy_set(thread_t thread, thread_policy_flavor_t flavor, thread_policy_t policy_info, mach_msg_type_number_t count) {
dtape_stub_unsafe();
};
void thread_read_deallocate(thread_read_t thread_read) {
dtape_stub_unsafe();
};
kern_return_t thread_resume(thread_t thread) {
dtape_stub_unsafe();
};
kern_return_t thread_set_mach_voucher(thread_t thread, ipc_voucher_t voucher) {
dtape_stub_unsafe();
};
kern_return_t thread_set_policy(thread_t thread, processor_set_t pset, policy_t policy, policy_base_t base, mach_msg_type_number_t base_count, policy_limit_t limit, mach_msg_type_number_t limit_count) {
dtape_stub_unsafe();
};
kern_return_t thread_set_state_from_user(thread_t thread, int flavor, thread_state_t state, mach_msg_type_number_t state_count) {
dtape_stub_unsafe();
};
kern_return_t thread_suspend(thread_t thread) {
dtape_stub_unsafe();
};
kern_return_t thread_wire(host_priv_t host_priv, thread_t thread, boolean_t wired) {
dtape_stub_unsafe();
};
#endif
// ignore the lock timeout
#define LockTimeOutUsec UINT32_MAX
@ -530,3 +610,107 @@ clear_wait(
}
// </copied>
// <copied from="xnu://7195.141.2/osfmk/kern/thread.c">
kern_return_t
thread_assign(
__unused thread_t thread,
__unused processor_set_t new_pset)
{
return KERN_FAILURE;
}
/*
* thread_assign_default:
*
* Special version of thread_assign for assigning threads to default
* processor set.
*/
kern_return_t
thread_assign_default(
thread_t thread)
{
return thread_assign(thread, &pset0);
}
/*
* thread_get_assignment
*
* Return current assignment for this thread.
*/
kern_return_t
thread_get_assignment(
thread_t thread,
processor_set_t *pset)
{
if (thread == NULL) {
return KERN_INVALID_ARGUMENT;
}
*pset = &pset0;
return KERN_SUCCESS;
}
/*
* thread_get_mach_voucher - return a voucher reference for the specified thread voucher
*
* Conditions: nothing locked
*
* NOTE: At the moment, there is no distinction between the current and effective
* vouchers because we only set them at the thread level currently.
*/
kern_return_t
thread_get_mach_voucher(
thread_act_t thread,
mach_voucher_selector_t __unused which,
ipc_voucher_t *voucherp)
{
ipc_voucher_t voucher;
if (THREAD_NULL == thread) {
return KERN_INVALID_ARGUMENT;
}
thread_mtx_lock(thread);
voucher = thread->ith_voucher;
if (IPC_VOUCHER_NULL != voucher) {
ipc_voucher_reference(voucher);
thread_mtx_unlock(thread);
*voucherp = voucher;
return KERN_SUCCESS;
}
thread_mtx_unlock(thread);
*voucherp = IPC_VOUCHER_NULL;
return KERN_SUCCESS;
}
/*
* thread_swap_mach_voucher - swap a voucher reference for the specified thread voucher
*
* Conditions: callers holds a reference on the new and presumed old voucher(s).
* nothing locked.
*
* This function is no longer supported.
*/
kern_return_t
thread_swap_mach_voucher(
__unused thread_t thread,
__unused ipc_voucher_t new_voucher,
ipc_voucher_t *in_out_old_voucher)
{
/*
* Currently this function is only called from a MIG generated
* routine which doesn't release the reference on the voucher
* addressed by in_out_old_voucher. To avoid leaking this reference,
* a call to release it has been added here.
*/
ipc_voucher_release(*in_out_old_voucher);
return KERN_NOT_SUPPORTED;
}
// </copied>

23
duct-tape/src/traps.c
View File

@ -6,6 +6,29 @@ uint32_t dtape_task_self_trap(void) {
return task_self_trap(NULL);
};
uint32_t dtape_host_self_trap(void) {
return host_self_trap(NULL);
};
uint32_t dtape_thread_self_trap(void) {
return thread_self_trap(NULL);
};
uint32_t dtape_mach_reply_port(void) {
return mach_reply_port(NULL);
};
int dtape_mach_msg_overwrite(uintptr_t msg, int32_t option, uint32_t send_size, uint32_t rcv_size, uint32_t rcv_name, uint32_t timeout, uint32_t notify, uintptr_t rcv_msg, uint32_t rcv_limit) {
struct mach_msg_overwrite_trap_args args = {
.msg = msg,
.option = option,
.send_size = send_size,
.rcv_size = rcv_size,
.rcv_name = rcv_name,
.timeout = timeout,
.priority = notify,
.rcv_msg = rcv_msg,
// no rcv_limit
};
return mach_msg_overwrite_trap(&args);
};

6
duct-tape/xnu/osfmk/ipc/ipc_init.c
View File

@ -152,8 +152,12 @@ SECURITY_READ_ONLY_LATE(vm_size_t) msg_ool_size_small;
* Purpose:
* Final initialization
*/
#ifdef __DARLING__
void
#else
__startup_func
static void
#endif // __DARLING__
ipc_init(void)
{
kern_return_t kr;
@ -207,8 +211,10 @@ ipc_init(void)
panic("ipc_init: kmem_suballoc of ipc_kernel_copy_map failed");
}
#ifndef __DARLING__
ipc_kernel_copy_map->no_zero_fill = TRUE;
ipc_kernel_copy_map->wait_for_space = TRUE;
#endif // __DARLING__
/*
* As an optimization, 'small' out of line data regions using a

13
duct-tape/xnu/osfmk/ipc/ipc_voucher.c
View File

@ -196,10 +196,19 @@ ipc_voucher_prepare_processing_recipe(
ipc_voucher_attr_manager_flags flags,
int *need_processing);
#ifdef __DARLING__
void
#else
__startup_func
static void
#endif // __DARLING__
ipc_voucher_init(void)
{
#ifdef __DARLING__
ipc_voucher_zone = zone_create("ipc vouchers", sizeof(struct ipc_voucher), ZC_NOENCRYPT | ZC_ZFREE_CLEARMEM | ZC_NOSEQUESTER);
ipc_voucher_attr_control_zone = zone_create("ipc voucher attr controls", sizeof(struct ipc_voucher_attr_control), ZC_NOENCRYPT | ZC_ZFREE_CLEARMEM);
lck_spin_init(&ivgt_lock_data, LCK_GRP_NULL, LCK_ATTR_NULL);
#endif // __DARLING__
/* initialize voucher hash */
for (iv_index_t i = 0; i < IV_HASH_BUCKETS; i++) {
queue_init(&ivht_bucket[i]);
@ -3234,8 +3243,12 @@ user_data_release(
panic("Voucher user-data manager released");
}
#ifdef __DARLING__
void
#else
__startup_func
static void
#endif // __DARLING__
user_data_attr_manager_init(void)
{
kern_return_t kr;

5
duct-tape/xnu/osfmk/ipc/mig_log.c
View File

@ -68,6 +68,11 @@
#include <mach/message.h>
#include <mach/mig_log.h>
#ifdef __DARLING__
__attribute__((format(printf, 1, 2)))
int printf(const char* format, ...);
#endif // __DARLING__
int mig_tracing, mig_errors, mig_full_tracing;
/*

10
duct-tape/xnu/osfmk/kern/host.c
View File

@ -130,6 +130,9 @@ host_data_t realhost;
static void
get_host_vm_stats(vm_statistics64_t out)
{
#ifdef __DARLING__
memset(out, 0, sizeof(*out));
#else
out->zero_fill_count = counter_load(&vm_statistics_zero_fill_count);
out->reactivations = counter_load(&vm_statistics_reactivations);
out->pageins = counter_load(&vm_statistics_pageins);
@ -142,6 +145,7 @@ get_host_vm_stats(vm_statistics64_t out)
out->decompressions = counter_load(&vm_statistics_decompressions);
out->swapins = counter_load(&vm_statistics_swapins);
out->swapouts = counter_load(&vm_statistics_swapouts);
#endif // __DARLING__
}
vm_extmod_statistics_data_t host_extmod_statistics;
@ -179,6 +183,7 @@ host_processors(host_priv_t host_priv, processor_array_t * out_array, mach_msg_t
extern int sched_allow_NO_SMT_threads;
#ifndef __DARLING__
kern_return_t
host_info(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count)
{
@ -393,9 +398,11 @@ host_info(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_num
default: return KERN_INVALID_ARGUMENT;
}
}
#endif // __DARLING__
kern_return_t host_statistics(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count);
#ifndef __DARLING__
kern_return_t
host_statistics(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count)
{
@ -585,6 +592,7 @@ host_statistics(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_ty
default: return KERN_INVALID_ARGUMENT;
}
}
#endif // __DARLING__
extern uint32_t c_segment_pages_compressed;
@ -797,6 +805,7 @@ out:
return rate_limited;
}
#ifndef __DARLING__
kern_return_t
vm_stats(void *info, unsigned int *count)
{
@ -873,6 +882,7 @@ vm_stats(void *info, unsigned int *count)
return KERN_SUCCESS;
}
#endif // __DARLING__
kern_return_t host_statistics64(host_t host, host_flavor_t flavor, host_info_t info, mach_msg_type_number_t * count);

4
duct-tape/xnu/osfmk/kern/host_notify.c
View File

@ -55,8 +55,12 @@ static mach_msg_id_t host_notify_replyid[HOST_NOTIFY_TYPE_MAX + 1] =
{ HOST_CALENDAR_CHANGED_REPLYID,
HOST_CALENDAR_SET_REPLYID };
#ifdef __DARLING__
void
#else
__startup_func
static void
#endif // __DARLING__
host_notify_init(void)
{
for (int i = 0; i <= HOST_NOTIFY_TYPE_MAX; i++) {

8
duct-tape/xnu/osfmk/kern/ipc_kobject.c
View File

@ -238,9 +238,17 @@ static const struct mig_subsystem *mig_e[] = {
(const struct mig_subsystem *)&mach_eventlink_subsystem,
};
#ifdef __DARLING__
void
#else
static void
#endif // ___DARLING__
mig_init(void)
{
#ifdef __DARLING__
ipc_kobject_label_zone = zone_create("ipc kobject labels", sizeof(struct ipc_kobject_label), ZC_NONE);
#endif // __DARLING__
unsigned int i, n = sizeof(mig_e) / sizeof(const struct mig_subsystem *);
int howmany;
mach_msg_id_t j, pos, nentry, range;

2
duct-tape/xnu/osfmk/kern/ipc_tt.c
View File

@ -3015,6 +3015,7 @@ convert_port_to_map_with_flavor(
}
map = task->map;
#ifndef __DARLING__
if (map->pmap == kernel_pmap) {
if (flavor == TASK_FLAVOR_CONTROL) {
panic("userspace has control access to a "
@ -3027,6 +3028,7 @@ convert_port_to_map_with_flavor(
} else {
pmap_require(map->pmap);
}
#endif // __DARLING__
vm_map_reference(map);
task_unlock(task);

4
duct-tape/xnu/osfmk/kern/processor.h
View File

@ -402,7 +402,11 @@ extern uint32_t processor_avail_count_user;
extern uint32_t primary_processor_avail_count;
extern uint32_t primary_processor_avail_count_user;
#ifdef __DARLING__
extern processor_t master_processor;
#else
#define master_processor PERCPU_GET_MASTER(processor)
#endif // __DARLING__
PERCPU_DECL(struct processor, processor);
extern processor_t current_processor(void);

4
duct-tape/xnu/osfmk/kern/ux_handler.c
View File

@ -50,6 +50,10 @@
#include <libkern/section_keywords.h>
#ifdef __DARLING__
#include <mach/host_priv_server.h>
#endif // __DARLING__
/*
* Mach kobject port to reflect Mach exceptions into Unix signals.
*

8
duct-tape/xnu/osfmk/mach/vm_param.h
View File

@ -342,10 +342,10 @@ extern vm_offset_t vm_kernel_addrhash(vm_offset_t addr);
__END_DECLS
#ifdef __DARLING__
#define VM_KERNEL_ADDRHIDE(_v) (_v)
#define VM_KERNEL_UNSLIDE_OR_PERM(_v) (_v)
#define VM_KERNEL_UNSLIDE(_v) (_v)
#define VM_KERNEL_ADDRPERM(_v) (_v)
#define VM_KERNEL_ADDRHIDE(_v) ((vm_address_t)(_v))
#define VM_KERNEL_UNSLIDE_OR_PERM(_v) ((vm_offset_t)(_v))
#define VM_KERNEL_UNSLIDE(_v) ((vm_offset_t)(_v))
#define VM_KERNEL_ADDRPERM(_v) VM_KERNEL_UNSLIDE_OR_PERM(_v)
#else
#define __DO_UNSLIDE(_v) ((vm_offset_t)VM_KERNEL_STRIP_PTR(_v) - vm_kernel_slide)

5
duct-tape/xnu/osfmk/vm/vm32_user.c
View File

@ -67,7 +67,9 @@
#include <mach/boolean.h>
#include <mach/kern_return.h>
#include <mach/mach_types.h> /* to get vm_address_t */
#ifndef __DARLING__ // causes unnecessary build issues
#include <mach/memory_object.h>
#endif // __DARLING__
#include <mach/std_types.h> /* to get pointer_t */
#include <mach/vm_attributes.h>
#include <mach/vm_param.h>
@ -549,6 +551,7 @@ vm32_make_memory_entry(
return kr;
}
#ifndef __DARLING__
kern_return_t
vm32__task_wire(
vm_map_t map,
@ -579,6 +582,6 @@ vm32__map_exec_lockdown(
return KERN_SUCCESS;
}
#endif // __DARLING__
#endif /* VM32_SUPPORT */

5
duct-tape/xnu/osfmk/vm/vm_kern.h
View File

@ -457,7 +457,12 @@ extern kern_return_t vm_map_wire_and_extract_kernel(
#endif /* XNU_KERNEL_PRIVATE */
#ifdef __DARLING__
#include <kern/task.h>
#define kernel_map (kernel_task->map)
#else
extern vm_map_t kernel_map;
#endif // __DARLING__
extern vm_map_t kernel_pageable_map;
extern vm_map_t ipc_kernel_map;
extern vm_map_t g_kext_map;

15
duct-tape/xnu/osfmk/vm/vm_map.h
View File

@ -418,7 +418,7 @@ VME_OBJECT_SHADOW(
#define MAX_WIRE_COUNT 65535
#ifndef __DARLING__
/*
* Type: struct vm_map_header
*
@ -437,11 +437,15 @@ struct vm_map_header {
#endif
int page_shift; /* page shift */
};
#endif // __DARLING__
#define VM_MAP_HDR_PAGE_SHIFT(hdr) ((hdr)->page_shift)
#define VM_MAP_HDR_PAGE_SIZE(hdr) (1 << VM_MAP_HDR_PAGE_SHIFT((hdr)))
#define VM_MAP_HDR_PAGE_MASK(hdr) (VM_MAP_HDR_PAGE_SIZE((hdr)) - 1)
#ifdef __DARLING__
#include <darlingserver/duct-tape/memory.h>
#else
/*
* Type: vm_map_t [exported; contents invisible]
*
@ -527,6 +531,7 @@ struct _vm_map {
/* reserved */ pad:14;
unsigned int timestamp; /* Version number */
};
#endif // __DARLING__
#define CAST_TO_VM_MAP_ENTRY(x) ((struct vm_map_entry *)(uintptr_t)(x))
#define vm_map_to_entry(map) CAST_TO_VM_MAP_ENTRY(&(map)->hdr.links)
@ -551,6 +556,7 @@ typedef struct vm_map_version {
unsigned int main_timestamp;
} vm_map_version_t;
#ifndef __DARLING__
/*
* Type: vm_map_copy_t [exported; contents invisible]
*
@ -599,6 +605,7 @@ struct vm_map_copy {
void *XNU_PTRAUTH_SIGNED_PTR("vm_map_copy.kdata") kdata; /* KERNEL_BUFFER */
} c_u;
};
#endif // __DARLING__
#define cpy_hdr c_u.hdr
@ -644,6 +651,7 @@ vm_map_copy_adjust_to_target(
((map)->timestamp = 0 , \
lck_rw_init(&(map)->lock, &vm_map_lck_grp, &vm_map_lck_rw_attr))
#ifndef __DARLING__
#define vm_map_lock(map) \
MACRO_BEGIN \
DTRACE_VM(vm_map_lock_w); \
@ -656,6 +664,7 @@ vm_map_copy_adjust_to_target(
(map)->timestamp++; \
lck_rw_done(&(map)->lock); \
MACRO_END
#endif // __DARLING__
#define vm_map_lock_read(map) \
MACRO_BEGIN \
@ -1541,7 +1550,9 @@ extern kern_return_t vm_map_page_range_info_internal(
/*
* Macros for rounding and truncation of vm_map offsets and sizes
*/
#ifndef __DARLING__
#define VM_MAP_PAGE_SHIFT(map) ((map) ? (map)->hdr.page_shift : PAGE_SHIFT)
#endif // __DARLING__
#define VM_MAP_PAGE_SIZE(map) (1 << VM_MAP_PAGE_SHIFT((map)))
#define VM_MAP_PAGE_MASK(map) (VM_MAP_PAGE_SIZE((map)) - 1)
#define VM_MAP_PAGE_ALIGNED(x, pgmask) (((x) & (pgmask)) == 0)
@ -1597,6 +1608,7 @@ VM_MAP_POLICY_WX_STRIP_X(
return false;
}
#ifndef __DARLING__
static inline bool
VM_MAP_POLICY_ALLOW_MULTIPLE_JIT(
vm_map_t map __unused)
@ -1606,6 +1618,7 @@ VM_MAP_POLICY_ALLOW_MULTIPLE_JIT(
}
return true;
}
#endif // __DARLING__
static inline bool
VM_MAP_POLICY_ALLOW_JIT_RANDOM_ADDRESS(

2
internal-include/darlingserver/call.hpp
View File

@ -43,8 +43,6 @@ namespace DarlingServer {
MessageQueue& _replyQueue;
Address _replyAddress;
void _stopPending();
public:
Call(MessageQueue& replyQueue, std::shared_ptr<Thread> thread, Address replyAddress);
virtual ~Call();

10
internal-include/darlingserver/process.hpp
View File

@ -46,8 +46,8 @@ namespace DarlingServer {
std::vector<std::weak_ptr<Thread>> _threads;
std::string _vchrootPath;
dtape_task_handle_t _dtapeTask;
std::weak_ptr<Process> _parentProcess;
bool _startSuspended = false;
void _unregisterThreads();
@ -55,6 +55,8 @@ namespace DarlingServer {
friend struct ::DTapeHooks;
bool _readOrWriteMemory(bool isWrite, uintptr_t remoteAddress, void* localBuffer, size_t length, int* errorCode) const;
public:
using ID = pid_t;
using NSID = ID;
@ -85,6 +87,12 @@ namespace DarlingServer {
std::shared_ptr<Process> parentProcess() const;
bool startSuspended() const;
void setStartSuspended(bool startSuspended);
bool readMemory(uintptr_t remoteAddress, void* localBuffer, size_t length, int* errorCode = nullptr) const;
bool writeMemory(uintptr_t remoteAddress, const void* localBuffer, size_t length, int* errorCode = nullptr) const;
static std::shared_ptr<Process> currentProcess();
static std::shared_ptr<Process> kernelProcess();
};

35
scripts/generate-rpc-wrappers.py
View File

@ -21,16 +21,44 @@ calls = [
]),
('task_self_trap', [], [
('port_name', 'unsigned int'),
('port_name', 'uint32_t'),
]),
('host_self_trap', [], [
('port_name', 'uint32_t'),
]),
('thread_self_trap', [], [
('port_name', 'uint32_t'),
]),
('mach_reply_port', [], [
('port_name', 'unsigned int'),
('port_name', 'uint32_t'),
]),
('kprintf', [
('string', 'char*', 'uint64_t'),
('string', 'const char*', 'uint64_t'),
('string_length', 'uint64_t'),
], []),
('started_suspended', [], [
('suspended', 'bool'),
]),
('get_tracer', [], [
('tracer', 'uint32_t'),
]),
('mach_msg_overwrite', [
('msg', 'void*', 'uint64_t'),
('option', 'int32_t'),
('send_size', 'uint32_t'),
('rcv_size', 'uint32_t'),
('rcv_name', 'uint32_t'),
('timeout', 'uint32_t'),
('notify', 'uint32_t'),
('rcv_msg', 'void*', 'uint64_t'),
('rcv_limit', 'uint32_t'),
], [])
]
@ -97,6 +125,7 @@ public_header.write("""\
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {

106
src/call.cpp
View File

@ -95,22 +95,9 @@ std::shared_ptr<DarlingServer::Thread> DarlingServer::Call::thread() const {
return _thread.lock();
};
/**
* Note that you MUST NOT have any local variables referencing `this` when this method is called.
*
* This Call object MAY be destroyed upon the return of this method.
*/
void DarlingServer::Call::_stopPending() {
// we're done processing this call; dump it
if (auto thread = _thread.lock()) {
thread->setPendingCall(nullptr);
}
};
void DarlingServer::Call::Checkin::processCall() {
// the Call creation already took care of registering the process and thread
_sendReply(0);
_stopPending();
};
void DarlingServer::Call::Checkout::processCall() {
@ -131,7 +118,6 @@ void DarlingServer::Call::Checkout::processCall() {
}
_sendReply(code);
_stopPending();
};
void DarlingServer::Call::VchrootPath::processCall() {
@ -141,22 +127,14 @@ void DarlingServer::Call::VchrootPath::processCall() {
if (auto thread = _thread.lock()) {
if (auto process = thread->process()) {
if (_body.buffer_size > 0) {
struct iovec local;
struct iovec remote;
auto tmpstr = process->vchrootPath().substr(0, _body.buffer_size - 1);
auto len = std::min(tmpstr.length() + 1, _body.buffer_size);
fullLength = process->vchrootPath().length();
// note that, despite the const cast, this is safe because the local iovec data is not modified by the call
local.iov_base = const_cast<char*>(tmpstr.c_str());
local.iov_len = len;
remote.iov_base = (void*)(uintptr_t)_body.buffer;
remote.iov_len = len;
if (process_vm_writev(process->id(), &local, 1, &remote, 1, 0) < 0) {
code = -errno;
if (!process->writeMemory(_body.buffer, tmpstr.c_str(), len, &code)) {
// writeMemory returns a positive error code, but we want a negative one
code = -code;
}
}
} else {
@ -167,7 +145,6 @@ void DarlingServer::Call::VchrootPath::processCall() {
}
_sendReply(code, fullLength);
_stopPending();
};
void DarlingServer::Call::TaskSelfTrap::processCall() {
@ -182,7 +159,34 @@ void DarlingServer::Call::TaskSelfTrap::processCall() {
callLog.debug() << "TaskSelfTrap returning port " << taskSelfPort << callLog.endLog;
_sendReply(0, taskSelfPort);
_stopPending();
};
void DarlingServer::Call::HostSelfTrap::processCall() {
if (auto thread = _thread.lock()) {
if (auto process = thread->process()) {
callLog.debug() << "Got HostSelfTrap call from " << process->nsid() << ":" << thread->nsid() << callLog.endLog;
}
}
const auto hostSelfPort = dtape_host_self_trap();
callLog.debug() << "HostSelfTrap returning port " << hostSelfPort << callLog.endLog;
_sendReply(0, hostSelfPort);
};
void DarlingServer::Call::ThreadSelfTrap::processCall() {
if (auto thread = _thread.lock()) {
if (auto process = thread->process()) {
callLog.debug() << "Got ThreadSelfTrap call from " << process->nsid() << ":" << thread->nsid() << callLog.endLog;
}
}
const auto threadSelfPort = dtape_thread_self_trap();
callLog.debug() << "ThreadSelfTrap returning port " << threadSelfPort << callLog.endLog;
_sendReply(0, threadSelfPort);
};
void DarlingServer::Call::MachReplyPort::processCall() {
@ -197,7 +201,6 @@ void DarlingServer::Call::MachReplyPort::processCall() {
callLog.debug() << "MachReplyPort returning port " << machReplyPort << callLog.endLog;
_sendReply(0, machReplyPort);
_stopPending();
};
void DarlingServer::Call::Kprintf::processCall() {
@ -209,19 +212,11 @@ void DarlingServer::Call::Kprintf::processCall() {
char* tmp = (char*)malloc(_body.string_length + 1);
if (tmp) {
struct iovec local;
struct iovec remote;
local.iov_base = tmp;
local.iov_len = _body.string_length;
remote.iov_base = (void*)(uintptr_t)_body.string;
remote.iov_len = _body.string_length;
if (process_vm_readv(process->id(), &local, 1, &remote, 1, 0) < 0) {
code = -errno;
} else {
if (process->readMemory(_body.string, tmp, _body.string_length, &code)) {
kprintfLog.info() << tmp << kprintfLog.endLog;
} else {
// readMemory returns a positive error code, but we want a negative one
code = -code;
}
free(tmp);
@ -236,5 +231,34 @@ void DarlingServer::Call::Kprintf::processCall() {
}
_sendReply(code);
_stopPending();
};
void DarlingServer::Call::StartedSuspended::processCall() {
int code = 0;
bool suspended = false;
if (auto thread = _thread.lock()) {
if (auto process = thread->process()) {
suspended = process->startSuspended();
} else {
code = -ESRCH;
}
} else {
code = -ESRCH;
}
_sendReply(code, suspended);
};
void DarlingServer::Call::GetTracer::processCall() {
int code = 0;
uint32_t tracer = 0;
callLog.warning() << "GetTracer: TODO" << callLog.endLog;
_sendReply(code, tracer);
};
void DarlingServer::Call::MachMsgOverwrite::processCall() {
_sendReply(dtape_mach_msg_overwrite(_body.msg, _body.option, _body.send_size, _body.rcv_size, _body.rcv_name, _body.timeout, _body.notify, _body.rcv_msg, _body.rcv_limit));
};

75
src/process.cpp
View File

@ -21,6 +21,8 @@
#include <darlingserver/registry.hpp>
#include <sys/syscall.h>
#include <unistd.h>
#include <sys/uio.h>
#include <darlingserver/logging.hpp>
#include <fstream>
@ -147,3 +149,76 @@ std::shared_ptr<DarlingServer::Process> DarlingServer::Process::kernelProcess()
}();
return process;
};
bool DarlingServer::Process::startSuspended() const {
std::shared_lock lock(_rwlock);
return _startSuspended;
};
void DarlingServer::Process::setStartSuspended(bool startSuspended) {
std::unique_lock lock(_rwlock);
_startSuspended = startSuspended;
};
bool DarlingServer::Process::_readOrWriteMemory(bool isWrite, uintptr_t remoteAddress, void* localBuffer, size_t length, int* errorCode) const {
struct iovec local;
struct iovec remote;
const auto func = isWrite ? process_vm_writev : process_vm_readv;
static DarlingServer::Log processMemoryAccessLog("procmem");
local.iov_base = localBuffer;
local.iov_len = length;
remote.iov_base = (void*)remoteAddress;
remote.iov_len = length;
if (func(id(), &local, 1, &remote, 1, 0) < 0) {
int code = errno;
processMemoryAccessLog.error()
<< "Failed to "
<< (isWrite ? "write " : "read ")
<< length
<< " byte(s) at "
<< remoteAddress
<< " in process "
<< id()
<< " ("
<< nsid()
<< "): "
<< code
<< " ("
<< strerror(code)
<< ")"
<< processMemoryAccessLog.endLog;
if (errorCode) {
*errorCode = code;
}
return false;
} else {
processMemoryAccessLog.debug()
<< "Successfully "
<< (isWrite ? "wrote " : "read ")
<< length
<< " byte(s) at "
<< remoteAddress
<< " in process "
<< id()
<< " ("
<< nsid()
<< ")"
<< processMemoryAccessLog.endLog;
if (errorCode) {
*errorCode = 0;
}
return true;
}
};
bool DarlingServer::Process::readMemory(uintptr_t remoteAddress, void* localBuffer, size_t length, int* errorCode) const {
return _readOrWriteMemory(false, remoteAddress, localBuffer, length, errorCode);
};
bool DarlingServer::Process::writeMemory(uintptr_t remoteAddress, const void* localBuffer, size_t length, int* errorCode) const {
// the const_cast is safe; when writing to a process' memory, localBuffer is not modified
return _readOrWriteMemory(true, remoteAddress, const_cast<void*>(localBuffer), length, errorCode);
};

10
src/server.cpp
View File

@ -125,6 +125,14 @@ struct DTapeHooks {
DarlingServer::Thread::interruptEnable();
};
static bool dtape_hook_task_read_memory(void* task_context, uintptr_t remote_address, void* local_buffer, size_t length) {
return static_cast<DarlingServer::Process*>(task_context)->readMemory(remote_address, local_buffer, length);
};
static bool dtape_hook_task_write_memory(void* task_context, uintptr_t remote_address, const void* local_buffer, size_t length) {
return static_cast<DarlingServer::Process*>(task_context)->writeMemory(remote_address, local_buffer, length);
};
static constexpr dtape_hooks_t dtape_hooks = {
.thread_suspend = dtape_hook_thread_suspend,
.thread_resume = dtape_hook_thread_resume,
@ -137,6 +145,8 @@ struct DTapeHooks {
.thread_start = dtape_hook_thread_start,
.current_thread_interrupt_disable = dtape_hook_current_thread_interrupt_disable,
.current_thread_interrupt_enable = dtape_hook_current_thread_interrupt_enable,
.task_read_memory = dtape_hook_task_read_memory,
.task_write_memory = dtape_hook_task_write_memory,
};
};

4
src/thread.cpp
View File

@ -205,7 +205,9 @@ static const auto microthreadLog = DarlingServer::Log("microthread");
// this runs in the context of the microthread (i.e. with the microthread's stack active)
void DarlingServer::Thread::microthreadWorker() {
currentThreadVar->pendingCall()->processCall();
auto call = currentThreadVar->pendingCall();
currentThreadVar->setPendingCall(nullptr);
call->processCall();
};
void DarlingServer::Thread::microthreadContinuation() {