| /* |
| * Copyright (c) 2019 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "pas_config.h" |
| |
| #if LIBPAS_ENABLED |
| |
| #include "pas_dyld_state.h" |
| |
| #include <mach/mach_init.h> |
| #include <mach/task.h> |
| #include <mach/task_info.h> |
| #include "pas_log.h" |
| |
| /* This is copied from dyld_process_info_internal.h |
| |
| FIXME: Stop doing it this way. Dyld should give us the is_libsystem_initialized API |
| somehow. */ |
| typedef struct { |
| uint32_t version; |
| uint32_t infoArrayCount; |
| uint64_t infoArray; |
| uint64_t notification; |
| bool processDetachedFromSharedRegion; |
| bool libSystemInitialized; |
| /* There are more things after this, but we don't care. */ |
| } dyld_all_image_infos_64; |
| |
| static dyld_all_image_infos_64* all_image_infos; |
| |
| bool pas_dyld_is_libsystem_initialized(void) |
| { |
| dyld_all_image_infos_64* infos; |
| |
| infos = all_image_infos; |
| |
| if (!infos) { |
| task_dyld_info_data_t task_dyld_info; |
| mach_msg_type_number_t count; |
| kern_return_t result; |
| |
| count = TASK_DYLD_INFO_COUNT; |
| result = task_info(mach_task_self(), |
| TASK_DYLD_INFO, |
| (task_info_t)&task_dyld_info, |
| &count); |
| PAS_ASSERT(result == KERN_SUCCESS); |
| |
| if (!task_dyld_info.all_image_info_addr) |
| return false; |
| |
| infos = (dyld_all_image_infos_64*)task_dyld_info.all_image_info_addr; |
| |
| pas_fence(); |
| |
| all_image_infos = infos; |
| } |
| |
| return infos->libSystemInitialized; |
| } |
| |
| #endif /* LIBPAS_ENABLED */ |
