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