1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_ASM_GENERIC_SIGINFO_H 3 #define _UAPI_ASM_GENERIC_SIGINFO_H 4 5 #include <linux/compiler.h> 6 #include <linux/types.h> 7 8 typedef union sigval { 9 int sival_int; 10 void __user *sival_ptr; 11 } sigval_t; 12 13 #define SI_MAX_SIZE 128 14 15 /* 16 * The default "si_band" type is "long", as specified by POSIX. 17 * However, some architectures want to override this to "int" 18 * for historical compatibility reasons, so we allow that. 19 */ 20 #ifndef __ARCH_SI_BAND_T 21 #define __ARCH_SI_BAND_T long 22 #endif 23 24 #ifndef __ARCH_SI_CLOCK_T 25 #define __ARCH_SI_CLOCK_T __kernel_clock_t 26 #endif 27 28 #ifndef __ARCH_SI_ATTRIBUTES 29 #define __ARCH_SI_ATTRIBUTES 30 #endif 31 32 union __sifields { 33 /* kill() */ 34 struct { 35 __kernel_pid_t _pid; /* sender's pid */ 36 __kernel_uid32_t _uid; /* sender's uid */ 37 } _kill; 38 39 /* POSIX.1b timers */ 40 struct { 41 __kernel_timer_t _tid; /* timer id */ 42 int _overrun; /* overrun count */ 43 sigval_t _sigval; /* same as below */ 44 int _sys_private; /* not to be passed to user */ 45 } _timer; 46 47 /* POSIX.1b signals */ 48 struct { 49 __kernel_pid_t _pid; /* sender's pid */ 50 __kernel_uid32_t _uid; /* sender's uid */ 51 sigval_t _sigval; 52 } _rt; 53 54 /* SIGCHLD */ 55 struct { 56 __kernel_pid_t _pid; /* which child */ 57 __kernel_uid32_t _uid; /* sender's uid */ 58 int _status; /* exit code */ 59 __ARCH_SI_CLOCK_T _utime; 60 __ARCH_SI_CLOCK_T _stime; 61 } _sigchld; 62 63 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ 64 struct { 65 void __user *_addr; /* faulting insn/memory ref. */ 66 #ifdef __ia64__ 67 int _imm; /* immediate value for "break" */ 68 unsigned int _flags; /* see ia64 si_flags */ 69 unsigned long _isr; /* isr */ 70 #endif 71 72 #define __ADDR_BND_PKEY_PAD (__alignof__(void *) < sizeof(short) ? \ 73 sizeof(short) : __alignof__(void *)) 74 union { 75 /* used on alpha and sparc */ 76 int _trapno; /* TRAP # which caused the signal */ 77 /* 78 * used when si_code=BUS_MCEERR_AR or 79 * used when si_code=BUS_MCEERR_AO 80 */ 81 short _addr_lsb; /* LSB of the reported address */ 82 /* used when si_code=SEGV_BNDERR */ 83 struct { 84 char _dummy_bnd[__ADDR_BND_PKEY_PAD]; 85 void __user *_lower; 86 void __user *_upper; 87 } _addr_bnd; 88 /* used when si_code=SEGV_PKUERR */ 89 struct { 90 char _dummy_pkey[__ADDR_BND_PKEY_PAD]; 91 __u32 _pkey; 92 } _addr_pkey; 93 /* used when si_code=TRAP_PERF */ 94 struct { 95 unsigned long _data; 96 __u32 _type; 97 } _perf; 98 }; 99 } _sigfault; 100 101 /* SIGPOLL */ 102 struct { 103 __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 104 int _fd; 105 } _sigpoll; 106 107 /* SIGSYS */ 108 struct { 109 void __user *_call_addr; /* calling user insn */ 110 int _syscall; /* triggering system call number */ 111 unsigned int _arch; /* AUDIT_ARCH_* of syscall */ 112 } _sigsys; 113 }; 114 115 #ifndef __ARCH_HAS_SWAPPED_SIGINFO 116 #define __SIGINFO \ 117 struct { \ 118 int si_signo; \ 119 int si_errno; \ 120 int si_code; \ 121 union __sifields _sifields; \ 122 } 123 #else 124 #define __SIGINFO \ 125 struct { \ 126 int si_signo; \ 127 int si_code; \ 128 int si_errno; \ 129 union __sifields _sifields; \ 130 } 131 #endif /* __ARCH_HAS_SWAPPED_SIGINFO */ 132 133 typedef struct siginfo { 134 union { 135 __SIGINFO; 136 int _si_pad[SI_MAX_SIZE/sizeof(int)]; 137 }; 138 } __ARCH_SI_ATTRIBUTES siginfo_t; 139 140 /* 141 * How these fields are to be accessed. 142 */ 143 #define si_pid _sifields._kill._pid 144 #define si_uid _sifields._kill._uid 145 #define si_tid _sifields._timer._tid 146 #define si_overrun _sifields._timer._overrun 147 #define si_sys_private _sifields._timer._sys_private 148 #define si_status _sifields._sigchld._status 149 #define si_utime _sifields._sigchld._utime 150 #define si_stime _sifields._sigchld._stime 151 #define si_value _sifields._rt._sigval 152 #define si_int _sifields._rt._sigval.sival_int 153 #define si_ptr _sifields._rt._sigval.sival_ptr 154 #define si_addr _sifields._sigfault._addr 155 #define si_trapno _sifields._sigfault._trapno 156 #define si_addr_lsb _sifields._sigfault._addr_lsb 157 #define si_lower _sifields._sigfault._addr_bnd._lower 158 #define si_upper _sifields._sigfault._addr_bnd._upper 159 #define si_pkey _sifields._sigfault._addr_pkey._pkey 160 #define si_perf_data _sifields._sigfault._perf._data 161 #define si_perf_type _sifields._sigfault._perf._type 162 #define si_band _sifields._sigpoll._band 163 #define si_fd _sifields._sigpoll._fd 164 #define si_call_addr _sifields._sigsys._call_addr 165 #define si_syscall _sifields._sigsys._syscall 166 #define si_arch _sifields._sigsys._arch 167 168 /* 169 * si_code values 170 * Digital reserves positive values for kernel-generated signals. 171 */ 172 #define SI_USER 0 /* sent by kill, sigsend, raise */ 173 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 174 #define SI_QUEUE -1 /* sent by sigqueue */ 175 #define SI_TIMER -2 /* sent by timer expiration */ 176 #define SI_MESGQ -3 /* sent by real time mesq state change */ 177 #define SI_ASYNCIO -4 /* sent by AIO completion */ 178 #define SI_SIGIO -5 /* sent by queued SIGIO */ 179 #define SI_TKILL -6 /* sent by tkill system call */ 180 #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 181 #define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */ 182 183 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 184 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 185 186 /* 187 * SIGILL si_codes 188 */ 189 #define ILL_ILLOPC 1 /* illegal opcode */ 190 #define ILL_ILLOPN 2 /* illegal operand */ 191 #define ILL_ILLADR 3 /* illegal addressing mode */ 192 #define ILL_ILLTRP 4 /* illegal trap */ 193 #define ILL_PRVOPC 5 /* privileged opcode */ 194 #define ILL_PRVREG 6 /* privileged register */ 195 #define ILL_COPROC 7 /* coprocessor error */ 196 #define ILL_BADSTK 8 /* internal stack error */ 197 #define ILL_BADIADDR 9 /* unimplemented instruction address */ 198 #define __ILL_BREAK 10 /* illegal break */ 199 #define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */ 200 #define NSIGILL 11 201 202 /* 203 * SIGFPE si_codes 204 */ 205 #define FPE_INTDIV 1 /* integer divide by zero */ 206 #define FPE_INTOVF 2 /* integer overflow */ 207 #define FPE_FLTDIV 3 /* floating point divide by zero */ 208 #define FPE_FLTOVF 4 /* floating point overflow */ 209 #define FPE_FLTUND 5 /* floating point underflow */ 210 #define FPE_FLTRES 6 /* floating point inexact result */ 211 #define FPE_FLTINV 7 /* floating point invalid operation */ 212 #define FPE_FLTSUB 8 /* subscript out of range */ 213 #define __FPE_DECOVF 9 /* decimal overflow */ 214 #define __FPE_DECDIV 10 /* decimal division by zero */ 215 #define __FPE_DECERR 11 /* packed decimal error */ 216 #define __FPE_INVASC 12 /* invalid ASCII digit */ 217 #define __FPE_INVDEC 13 /* invalid decimal digit */ 218 #define FPE_FLTUNK 14 /* undiagnosed floating-point exception */ 219 #define FPE_CONDTRAP 15 /* trap on condition */ 220 #define NSIGFPE 15 221 222 /* 223 * SIGSEGV si_codes 224 */ 225 #define SEGV_MAPERR 1 /* address not mapped to object */ 226 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */ 227 #define SEGV_BNDERR 3 /* failed address bound checks */ 228 #ifdef __ia64__ 229 # define __SEGV_PSTKOVF 4 /* paragraph stack overflow */ 230 #else 231 # define SEGV_PKUERR 4 /* failed protection key checks */ 232 #endif 233 #define SEGV_ACCADI 5 /* ADI not enabled for mapped object */ 234 #define SEGV_ADIDERR 6 /* Disrupting MCD error */ 235 #define SEGV_ADIPERR 7 /* Precise MCD exception */ 236 #define SEGV_MTEAERR 8 /* Asynchronous ARM MTE error */ 237 #define SEGV_MTESERR 9 /* Synchronous ARM MTE exception */ 238 #define NSIGSEGV 9 239 240 /* 241 * SIGBUS si_codes 242 */ 243 #define BUS_ADRALN 1 /* invalid address alignment */ 244 #define BUS_ADRERR 2 /* non-existent physical address */ 245 #define BUS_OBJERR 3 /* object specific hardware error */ 246 /* hardware memory error consumed on a machine check: action required */ 247 #define BUS_MCEERR_AR 4 248 /* hardware memory error detected in process but not consumed: action optional*/ 249 #define BUS_MCEERR_AO 5 250 #define NSIGBUS 5 251 252 /* 253 * SIGTRAP si_codes 254 */ 255 #define TRAP_BRKPT 1 /* process breakpoint */ 256 #define TRAP_TRACE 2 /* process trace trap */ 257 #define TRAP_BRANCH 3 /* process taken branch trap */ 258 #define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */ 259 #define TRAP_UNK 5 /* undiagnosed trap */ 260 #define TRAP_PERF 6 /* perf event with sigtrap=1 */ 261 #define NSIGTRAP 6 262 263 /* 264 * There is an additional set of SIGTRAP si_codes used by ptrace 265 * that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP) 266 */ 267 268 /* 269 * SIGCHLD si_codes 270 */ 271 #define CLD_EXITED 1 /* child has exited */ 272 #define CLD_KILLED 2 /* child was killed */ 273 #define CLD_DUMPED 3 /* child terminated abnormally */ 274 #define CLD_TRAPPED 4 /* traced child has trapped */ 275 #define CLD_STOPPED 5 /* child has stopped */ 276 #define CLD_CONTINUED 6 /* stopped child has continued */ 277 #define NSIGCHLD 6 278 279 /* 280 * SIGPOLL (or any other signal without signal specific si_codes) si_codes 281 */ 282 #define POLL_IN 1 /* data input available */ 283 #define POLL_OUT 2 /* output buffers available */ 284 #define POLL_MSG 3 /* input message available */ 285 #define POLL_ERR 4 /* i/o error */ 286 #define POLL_PRI 5 /* high priority input available */ 287 #define POLL_HUP 6 /* device disconnected */ 288 #define NSIGPOLL 6 289 290 /* 291 * SIGSYS si_codes 292 */ 293 #define SYS_SECCOMP 1 /* seccomp triggered */ 294 #define SYS_USER_DISPATCH 2 /* syscall user dispatch triggered */ 295 #define NSIGSYS 2 296 297 /* 298 * SIGEMT si_codes 299 */ 300 #define EMT_TAGOVF 1 /* tag overflow */ 301 #define NSIGEMT 1 302 303 /* 304 * sigevent definitions 305 * 306 * It seems likely that SIGEV_THREAD will have to be handled from 307 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 308 * thread manager then catches and does the appropriate nonsense. 309 * However, everything is written out here so as to not get lost. 310 */ 311 #define SIGEV_SIGNAL 0 /* notify via signal */ 312 #define SIGEV_NONE 1 /* other notification: meaningless */ 313 #define SIGEV_THREAD 2 /* deliver via thread creation */ 314 #define SIGEV_THREAD_ID 4 /* deliver to thread */ 315 316 /* 317 * This works because the alignment is ok on all current architectures 318 * but we leave open this being overridden in the future 319 */ 320 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE 321 #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 322 #endif 323 324 #define SIGEV_MAX_SIZE 64 325 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 326 / sizeof(int)) 327 328 typedef struct sigevent { 329 sigval_t sigev_value; 330 int sigev_signo; 331 int sigev_notify; 332 union { 333 int _pad[SIGEV_PAD_SIZE]; 334 int _tid; 335 336 struct { 337 void (*_function)(sigval_t); 338 void *_attribute; /* really pthread_attr_t */ 339 } _sigev_thread; 340 } _sigev_un; 341 } sigevent_t; 342 343 #define sigev_notify_function _sigev_un._sigev_thread._function 344 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute 345 #define sigev_notify_thread_id _sigev_un._tid 346 347 348 #endif /* _UAPI_ASM_GENERIC_SIGINFO_H */ 349