1 /* 2 * Copyright (c) 2010-2014 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 #ifndef __LIBKERNEL_INIT_H 30 #define __LIBKERNEL_INIT_H 31 32 #include <ptrauth.h> 33 #include <stdbool.h> 34 #include <sys/types.h> 35 #include <mach/mach.h> 36 #include <mach/message.h> 37 #include <mach/mach_types.h> 38 39 #ifndef __OS_VOUCHER_PRIVATE__ 40 // We cannot include the actual os/voucher_private.h definition of voucher_t 41 // here, as that also marks the voucher_XXX functions as exported, which causes 42 // a compile error when we attempt to mark them hidden in the .c file. 43 // 44 // The Libsystem init.c file does include os/voucher_private.h though, as well 45 // as this file, and this typedef causes an error if it is unguarded. 46 struct voucher_s; 47 typedef struct voucher_s *voucher_t; 48 #endif 49 50 #if __PTRAUTH_INTRINSICS__ && __has_builtin(__builtin_ptrauth_string_discriminator) 51 #define LIBKERNEL_FUNCTION_PTRAUTH(f) \ 52 __ptrauth(ptrauth_key_function_pointer,1, \ 53 __builtin_ptrauth_string_discriminator("libkernel_functions_" # f) \ 54 ) f 55 #else 56 #define LIBKERNEL_FUNCTION_PTRAUTH(f) f 57 #endif 58 59 typedef const struct _libkernel_functions { 60 /* The following functions are included in version 1 of this structure */ 61 unsigned long version; 62 void* (*LIBKERNEL_FUNCTION_PTRAUTH(dlsym))(void*, const char*); 63 void* (*LIBKERNEL_FUNCTION_PTRAUTH(malloc))(size_t); 64 void(*LIBKERNEL_FUNCTION_PTRAUTH(free))(void*); 65 void* (*LIBKERNEL_FUNCTION_PTRAUTH(realloc))(void*, size_t); 66 void(*LIBKERNEL_FUNCTION_PTRAUTH(_pthread_exit_if_canceled))(int); 67 68 /* The following functions are included in version 2 of this structure */ 69 void *reserved1; 70 void *reserved2; 71 void *reserved3; 72 void *reserved4; 73 void *reserved5; 74 75 /* The following functions are included in version 3 of this structure */ 76 void(*LIBKERNEL_FUNCTION_PTRAUTH(pthread_clear_qos_tsd))(mach_port_t); 77 78 /* The following functions are included in version 4 of this structure */ 79 int(*LIBKERNEL_FUNCTION_PTRAUTH(pthread_current_stack_contains_np))(const void *, size_t); 80 81 /* Subsequent versions must only add pointers! */ 82 } *_libkernel_functions_t; 83 84 typedef const struct _libkernel_string_functions { 85 /* The following functions are included in version 1 of this structure */ 86 unsigned long version; 87 void (*bzero)(void *s, size_t n); 88 void * (*memchr)(const void *s, int c, size_t n); 89 int (*memcmp)(const void *s1, const void *s2, size_t n); 90 void * (*memmove)(void *dst, const void *src, size_t n); 91 void * (*memccpy)(void *__restrict dst, const void *__restrict src, int c, size_t n); 92 void * (*memset)(void *b, int c, size_t len); 93 char * (*strchr)(const char *s, int c); 94 int (*strcmp)(const char *s1, const char *s2); 95 char * (*strcpy)(char * restrict dst, const char * restrict src); 96 size_t (*strlcat)(char * restrict dst, const char * restrict src, size_t maxlen); 97 size_t (*strlcpy)(char * restrict dst, const char * restrict src, size_t maxlen); 98 size_t (*strlen)(const char *str); 99 int (*strncmp)(const char *s1, const char *s2, size_t n); 100 char * (*strncpy)(char * restrict dst, const char * restrict src, size_t maxlen); 101 size_t (*strnlen)(const char *s, size_t maxlen); 102 char * (*strstr)(const char *s, const char *find); 103 /* Subsequent versions must only add pointers! */ 104 } *_libkernel_string_functions_t; 105 106 typedef const struct _libkernel_voucher_functions { 107 /* The following functions are included in version 1 of this structure */ 108 unsigned long version; 109 boolean_t (*voucher_mach_msg_set)(mach_msg_header_t*); 110 void (*voucher_mach_msg_clear)(mach_msg_header_t*); 111 voucher_mach_msg_state_t (*voucher_mach_msg_adopt)(mach_msg_header_t*); 112 void (*voucher_mach_msg_revert)(voucher_mach_msg_state_t); 113 114 /* version 2 is skipped */ 115 116 /* The following functions are included in version 3 of this structure */ 117 mach_msg_size_t (*voucher_mach_msg_fill_aux)(mach_msg_aux_header_t*, mach_msg_size_t); 118 119 /* Subsequent versions must only add pointers! */ 120 } *_libkernel_voucher_functions_t; 121 122 typedef struct _libkernel_late_init_config { 123 unsigned long version; 124 125 /* Version 1 fields */ 126 bool enable_system_version_compat; 127 128 /* Version 2 fields */ 129 bool enable_ios_version_compat; 130 131 /* Version 3 fields */ 132 bool enable_posix_spawn_filtering; 133 } *_libkernel_late_init_config_t; 134 135 struct ProgramVars; /* forward reference */ 136 137 void __libkernel_init(_libkernel_functions_t fns, const char *envp[], 138 const char *apple[], const struct ProgramVars *vars); 139 140 kern_return_t __libkernel_platform_init(_libkernel_string_functions_t fns); 141 142 kern_return_t __libkernel_voucher_init(_libkernel_voucher_functions_t fns); 143 144 void __libkernel_init_late(_libkernel_late_init_config_t config); 145 146 typedef struct _libkernel_init_after_boot_tasks_config { 147 unsigned long version; 148 149 /* Version 1 fields */ 150 bool enable_posix_spawn_filtering; 151 } *_libkernel_init_after_boot_tasks_config_t; 152 153 void __libkernel_init_after_boot_tasks( 154 _libkernel_init_after_boot_tasks_config_t config); 155 156 #endif // __LIBKERNEL_INIT_H 157