1 /* 2 * Copyright (c) 2019 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 _REASON_H_ 30 #define _REASON_H_ 31 32 #include <stdint.h> 33 34 __BEGIN_DECLS 35 36 #ifdef KERNEL_PRIVATE 37 38 #include <kern/kern_cdata.h> 39 #include <os/refcnt.h> 40 41 #ifdef XNU_KERNEL_PRIVATE 42 #include <kern/locks.h> 43 44 typedef struct os_reason { 45 decl_lck_mtx_data(, osr_lock); 46 os_refcnt_t osr_refcount; 47 uint32_t osr_namespace; 48 uint64_t osr_code; 49 uint64_t osr_flags; 50 uint32_t osr_bufsize; 51 struct kcdata_descriptor osr_kcd_descriptor; 52 char *osr_kcd_buf; 53 } *os_reason_t; 54 55 #define OS_REASON_NULL ((os_reason_t) 0) 56 57 /* We only include 800 bytes of the exit reason description to not blow through the panic buffer */ 58 #define LAUNCHD_PANIC_REASON_STRING_MAXLEN "800" 59 60 void os_reason_init(void); 61 62 os_reason_t build_userspace_exit_reason(uint32_t reason_namespace, uint64_t reason_code, user_addr_t payload, uint32_t payload_size, 63 user_addr_t reason_string, uint64_t reason_flags); 64 char *launchd_exit_reason_get_string_desc(os_reason_t exit_reason); 65 66 /* The blocking allocation is currently not exported to KEXTs */ 67 int os_reason_alloc_buffer(os_reason_t cur_reason, uint32_t osr_bufsize); 68 69 #else /* XNU_KERNEL_PRIVATE */ 70 71 typedef void * os_reason_t; 72 73 #endif /* XNU_KERNEL_PRIVATE */ 74 75 os_reason_t os_reason_create(uint32_t osr_namespace, uint64_t osr_code); 76 int os_reason_alloc_buffer_noblock(os_reason_t cur_reason, uint32_t osr_bufsize); 77 struct kcdata_descriptor * os_reason_get_kcdata_descriptor(os_reason_t cur_reason); 78 void os_reason_ref(os_reason_t cur_reason); 79 void os_reason_free(os_reason_t cur_reason); 80 void os_reason_set_flags(os_reason_t cur_reason, uint64_t flags); 81 void os_reason_set_description_data(os_reason_t cur_reason, uint32_t type, void *reason_data, uint32_t reason_data_len); 82 #endif /* KERNEL_PRIVATE */ 83 84 /* 85 * Reason namespaces. 86 */ 87 #define OS_REASON_INVALID 0 88 #define OS_REASON_JETSAM 1 89 #define OS_REASON_SIGNAL 2 90 #define OS_REASON_CODESIGNING 3 91 #define OS_REASON_HANGTRACER 4 92 #define OS_REASON_TEST 5 93 #define OS_REASON_DYLD 6 94 #define OS_REASON_LIBXPC 7 95 #define OS_REASON_OBJC 8 96 #define OS_REASON_EXEC 9 97 #define OS_REASON_SPRINGBOARD 10 98 #define OS_REASON_TCC 11 99 #define OS_REASON_REPORTCRASH 12 100 #define OS_REASON_COREANIMATION 13 101 #define OS_REASON_AGGREGATED 14 102 #define OS_REASON_RUNNINGBOARD 15 103 #define OS_REASON_ASSERTIOND OS_REASON_RUNNINGBOARD /* old name */ 104 #define OS_REASON_SKYWALK 16 105 #define OS_REASON_SETTINGS 17 106 #define OS_REASON_LIBSYSTEM 18 107 #define OS_REASON_FOUNDATION 19 108 #define OS_REASON_WATCHDOG 20 109 #define OS_REASON_METAL 21 110 #define OS_REASON_WATCHKIT 22 111 #define OS_REASON_GUARD 23 112 #define OS_REASON_ANALYTICS 24 113 #define OS_REASON_SANDBOX 25 114 #define OS_REASON_SECURITY 26 115 #define OS_REASON_ENDPOINTSECURITY 27 116 #define OS_REASON_PAC_EXCEPTION 28 117 #define OS_REASON_BLUETOOTH_CHIP 29 118 #define OS_REASON_PORT_SPACE 30 119 #define OS_REASON_WEBKIT 31 120 #define OS_REASON_BACKLIGHTSERVICES 32 121 #define OS_REASON_MEDIA 33 122 123 /* 124 * Update whenever new OS_REASON namespaces are added. 125 */ 126 #define OS_REASON_MAX_VALID_NAMESPACE OS_REASON_MEDIA 127 128 #define OS_REASON_BUFFER_MAX_SIZE 5120 129 130 #define OS_REASON_FLAG_NO_CRASH_REPORT 0x1 /* Don't create a crash report */ 131 #define OS_REASON_FLAG_GENERATE_CRASH_REPORT 0x2 /* Create a crash report - the default for userspace requests */ 132 #define OS_REASON_FLAG_FROM_USERSPACE 0x4 /* Reason created from a userspace syscall */ 133 #define OS_REASON_FLAG_FAILED_DATA_COPYIN 0x8 /* We failed to copyin data from userspace */ 134 #define OS_REASON_FLAG_PAYLOAD_TRUNCATED 0x10 /* The payload was truncated because it was longer than allowed */ 135 #define OS_REASON_FLAG_BAD_PARAMS 0x20 /* Invalid parameters were passed involved with creating this reason */ 136 #define OS_REASON_FLAG_CONSISTENT_FAILURE 0x40 /* Whatever caused this reason to be created will happen again */ 137 #define OS_REASON_FLAG_ONE_TIME_FAILURE 0x80 /* Whatever caused this reason to be created was a one time issue */ 138 #define OS_REASON_FLAG_NO_CRASHED_TID 0x100 /* Don't include the TID that processed the exit in the crash report */ 139 #define OS_REASON_FLAG_ABORT 0x200 /* Reason created from abort_* rather than terminate_* */ 140 #define OS_REASON_FLAG_SHAREDREGION_FAULT 0x400 /* Fault happened within the shared cache region */ 141 142 /* 143 * Set of flags that are allowed to be passed from userspace 144 */ 145 #define OS_REASON_FLAG_MASK_ALLOWED_FROM_USER (OS_REASON_FLAG_CONSISTENT_FAILURE | OS_REASON_FLAG_ONE_TIME_FAILURE | OS_REASON_FLAG_NO_CRASH_REPORT | OS_REASON_FLAG_ABORT) 146 147 /* 148 * Macros to encode the exit reason namespace and first 32 bits of code in exception code 149 * which is used by Report Crash as a hint. It should be only used as a hint since it 150 * looses higher 32 bits of exit reason code. 151 */ 152 #define ENCODE_OSR_NAMESPACE_TO_MACH_EXCEPTION_CODE(code, osr_namespace) \ 153 (code) = (code) | (((osr_namespace) & ((uint64_t)UINT32_MAX)) << 32) 154 #define ENCODE_OSR_CODE_TO_MACH_EXCEPTION_CODE(code, osr_code) \ 155 (code) = (code) | ((osr_code) & ((uint64_t)UINT32_MAX)) 156 157 #ifndef KERNEL 158 /* 159 * abort_with_reason: Used to exit the current process and pass along 160 * specific information about why it is being terminated. 161 * 162 * Inputs: args->reason_namespace - OS_REASON namespace specified for the reason 163 * args->reason_code - code in the specified namespace for the reason 164 * args->reason_string - additional string formatted information about the request 165 * args->reason_flags - options requested for how the process should be terminated (see OS_REASON_FLAG_* above). 166 * 167 * Outputs: Does not return. 168 */ 169 void abort_with_reason(uint32_t reason_namespace, uint64_t reason_code, const char *reason_string, uint64_t reason_flags) 170 __attribute__((noreturn, cold)); 171 172 /* 173 * abort_with_payload: Used to exit the current process and pass along 174 * specific information about why it is being terminated. The payload pointer 175 * should point to structured data that can be interpreted by the consumer of 176 * exit reason information. 177 * 178 * Inputs: args->reason_namespace - OS_REASON namespace specified for the reason 179 * args->reason_code - code in the specified namespace for the reason 180 * args->payload - pointer to payload structure in user space 181 * args->payload_size - length of payload buffer (this will be truncated to EXIT_REASON_PAYLOAD_MAX_LEN) 182 * args->reason_string - additional string formatted information about the request 183 * args->reason_flags - options requested for how the process should be terminated (see OS_REASON_FLAG_* above). 184 * 185 * Outputs: Does not return. 186 */ 187 void abort_with_payload(uint32_t reason_namespace, uint64_t reason_code, void *payload, uint32_t payload_size, const char *reason_string, 188 uint64_t reason_flags) __attribute__((noreturn, cold)); 189 190 /* 191 * terminate_with_reason: Used to terminate a specific process and pass along 192 * specific information about why it is being terminated. 193 * 194 * Inputs: args->pid - the PID of the process to be terminated 195 * args->reason_namespace - OS_REASON namespace specified for the reason 196 * args->reason_code - code in the specified namespace for the reason 197 * args->reason_string - additional string formatted information about the request 198 * args->reason_flags - options requested for how the process should be terminated (see OS_REASON_FLAG_* above) 199 * 200 * Outputs: returns -1 and sets errno to EINVAL if the PID requested is the same as that of the calling process, invalid or the namespace provided is invalid. 201 * returns -1 and sets errno to ESRCH if we couldn't find a live process with the requested PID 202 * returns -1 and sets errno to EPERM if the caller is not privileged enough to kill the process with the requested PID 203 * returns 0 otherwise 204 */ 205 int terminate_with_reason(int pid, uint32_t reason_namespace, uint64_t reason_code, const char *reason_string, uint64_t reason_flags); 206 207 /* 208 * terminate_with_payload: Used to terminate a specific process and pass along 209 * specific information about why it is being terminated. The payload pointer 210 * should point to structured data that can be interpreted by the consumer of 211 * exit reason information. 212 * 213 * Inputs: args->pid - the PID of the process to be terminated. 214 * args->reason_namespace - OS_REASON namespace specified for the reason 215 * args->reason_code - code in the specified namespace for the reason 216 * args->payload - pointer to payload structure in user space 217 * args->payload_size - length of payload buffer (this will be truncated to EXIT_REASON_PAYLOAD_MAX_LEN) 218 * args->reason_string - additional string formatted information about the request 219 * args->reason_flags - options requested for how the process should be terminated (see OS_REASON_FLAG_* above) 220 * 221 * Outputs: returns -1 and sets errno to EINVAL if the PID requested is the same as that of the calling process, is invalid or the namespace provided is invalid. 222 * returns -1 and sets errno to ESRCH if we couldn't find a live process with the requested PID 223 * returns -1 and sets errno to EPERM if the caller is not privileged enough to kill the process with the requested PID 224 * returns 0 otherwise 225 */ 226 int terminate_with_payload(int pid, uint32_t reason_namespace, uint64_t reason_code, void *payload, uint32_t payload_size, 227 const char *reason_string, uint64_t reason_flags); 228 #endif /* KERNEL */ 229 230 /* 231 * codesigning exit reasons 232 */ 233 #define CODESIGNING_EXIT_REASON_TASKGATED_INVALID_SIG 1 234 #define CODESIGNING_EXIT_REASON_INVALID_PAGE 2 235 #define CODESIGNING_EXIT_REASON_TASK_ACCESS_PORT 3 236 237 /* 238 * exec path specific exit reasons 239 */ 240 #define EXEC_EXIT_REASON_BAD_MACHO 1 241 #define EXEC_EXIT_REASON_SUGID_FAILURE 2 242 #define EXEC_EXIT_REASON_ACTV_THREADSTATE 3 243 #define EXEC_EXIT_REASON_STACK_ALLOC 4 244 #define EXEC_EXIT_REASON_APPLE_STRING_INIT 5 245 #define EXEC_EXIT_REASON_COPYOUT_STRINGS 6 246 #define EXEC_EXIT_REASON_COPYOUT_DYNLINKER 7 247 #define EXEC_EXIT_REASON_SECURITY_POLICY 8 248 #define EXEC_EXIT_REASON_TASKGATED_OTHER 9 249 #define EXEC_EXIT_REASON_FAIRPLAY_DECRYPT 10 250 #define EXEC_EXIT_REASON_DECRYPT 11 251 #define EXEC_EXIT_REASON_UPX 12 252 #define EXEC_EXIT_REASON_NO32EXEC 13 253 #define EXEC_EXIT_REASON_WRONG_PLATFORM 14 254 #define EXEC_EXIT_REASON_MAIN_FD_ALLOC 15 255 #define EXEC_EXIT_REASON_COPYOUT_ROSETTA 16 256 /* 257 * guard reasons 258 */ 259 #define GUARD_REASON_VNODE 1 260 #define GUARD_REASON_VIRT_MEMORY 2 261 #define GUARD_REASON_MACH_PORT 3 262 263 __END_DECLS 264 265 #endif /* _REASON_H_ */ 266