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 }; 95 } _sigfault; 96 97 /* SIGPOLL */ 98 struct { 99 __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 100 int _fd; 101 } _sigpoll; 102 103 /* SIGSYS */ 104 struct { 105 void __user *_call_addr; /* calling user insn */ 106 int _syscall; /* triggering system call number */ 107 unsigned int _arch; /* AUDIT_ARCH_* of syscall */ 108 } _sigsys; 109 }; 110 111 #ifndef __ARCH_HAS_SWAPPED_SIGINFO 112 #define __SIGINFO \ 113 struct { \ 114 int si_signo; \ 115 int si_errno; \ 116 int si_code; \ 117 union __sifields _sifields; \ 118 } 119 #else 120 #define __SIGINFO \ 121 struct { \ 122 int si_signo; \ 123 int si_code; \ 124 int si_errno; \ 125 union __sifields _sifields; \ 126 } 127 #endif /* __ARCH_HAS_SWAPPED_SIGINFO */ 128 129 typedef struct siginfo { 130 union { 131 __SIGINFO; 132 int _si_pad[SI_MAX_SIZE/sizeof(int)]; 133 }; 134 } __ARCH_SI_ATTRIBUTES siginfo_t; 135 136 /* 137 * How these fields are to be accessed. 138 */ 139 #define si_pid _sifields._kill._pid 140 #define si_uid _sifields._kill._uid 141 #define si_tid _sifields._timer._tid 142 #define si_overrun _sifields._timer._overrun 143 #define si_sys_private _sifields._timer._sys_private 144 #define si_status _sifields._sigchld._status 145 #define si_utime _sifields._sigchld._utime 146 #define si_stime _sifields._sigchld._stime 147 #define si_value _sifields._rt._sigval 148 #define si_int _sifields._rt._sigval.sival_int 149 #define si_ptr _sifields._rt._sigval.sival_ptr 150 #define si_addr _sifields._sigfault._addr 151 #ifdef __ARCH_SI_TRAPNO 152 #define si_trapno _sifields._sigfault._trapno 153 #endif 154 #define si_addr_lsb _sifields._sigfault._addr_lsb 155 #define si_lower _sifields._sigfault._addr_bnd._lower 156 #define si_upper _sifields._sigfault._addr_bnd._upper 157 #define si_pkey _sifields._sigfault._addr_pkey._pkey 158 #define si_band _sifields._sigpoll._band 159 #define si_fd _sifields._sigpoll._fd 160 #define si_call_addr _sifields._sigsys._call_addr 161 #define si_syscall _sifields._sigsys._syscall 162 #define si_arch _sifields._sigsys._arch 163 164 /* 165 * si_code values 166 * Digital reserves positive values for kernel-generated signals. 167 */ 168 #define SI_USER 0 /* sent by kill, sigsend, raise */ 169 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 170 #define SI_QUEUE -1 /* sent by sigqueue */ 171 #define SI_TIMER -2 /* sent by timer expiration */ 172 #define SI_MESGQ -3 /* sent by real time mesq state change */ 173 #define SI_ASYNCIO -4 /* sent by AIO completion */ 174 #define SI_SIGIO -5 /* sent by queued SIGIO */ 175 #define SI_TKILL -6 /* sent by tkill system call */ 176 #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 177 #define SI_ASYNCNL -60 /* sent by glibc async name lookup completion */ 178 179 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 180 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 181 182 /* 183 * SIGILL si_codes 184 */ 185 #define ILL_ILLOPC 1 /* illegal opcode */ 186 #define ILL_ILLOPN 2 /* illegal operand */ 187 #define ILL_ILLADR 3 /* illegal addressing mode */ 188 #define ILL_ILLTRP 4 /* illegal trap */ 189 #define ILL_PRVOPC 5 /* privileged opcode */ 190 #define ILL_PRVREG 6 /* privileged register */ 191 #define ILL_COPROC 7 /* coprocessor error */ 192 #define ILL_BADSTK 8 /* internal stack error */ 193 #define ILL_BADIADDR 9 /* unimplemented instruction address */ 194 #define __ILL_BREAK 10 /* illegal break */ 195 #define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */ 196 #define NSIGILL 11 197 198 /* 199 * SIGFPE si_codes 200 */ 201 #define FPE_INTDIV 1 /* integer divide by zero */ 202 #define FPE_INTOVF 2 /* integer overflow */ 203 #define FPE_FLTDIV 3 /* floating point divide by zero */ 204 #define FPE_FLTOVF 4 /* floating point overflow */ 205 #define FPE_FLTUND 5 /* floating point underflow */ 206 #define FPE_FLTRES 6 /* floating point inexact result */ 207 #define FPE_FLTINV 7 /* floating point invalid operation */ 208 #define FPE_FLTSUB 8 /* subscript out of range */ 209 #define __FPE_DECOVF 9 /* decimal overflow */ 210 #define __FPE_DECDIV 10 /* decimal division by zero */ 211 #define __FPE_DECERR 11 /* packed decimal error */ 212 #define __FPE_INVASC 12 /* invalid ASCII digit */ 213 #define __FPE_INVDEC 13 /* invalid decimal digit */ 214 #define FPE_FLTUNK 14 /* undiagnosed floating-point exception */ 215 #define FPE_CONDTRAP 15 /* trap on condition */ 216 #define NSIGFPE 15 217 218 /* 219 * SIGSEGV si_codes 220 */ 221 #define SEGV_MAPERR 1 /* address not mapped to object */ 222 #define SEGV_ACCERR 2 /* invalid permissions for mapped object */ 223 #define SEGV_BNDERR 3 /* failed address bound checks */ 224 #ifdef __ia64__ 225 # define __SEGV_PSTKOVF 4 /* paragraph stack overflow */ 226 #else 227 # define SEGV_PKUERR 4 /* failed protection key checks */ 228 #endif 229 #define SEGV_ACCADI 5 /* ADI not enabled for mapped object */ 230 #define SEGV_ADIDERR 6 /* Disrupting MCD error */ 231 #define SEGV_ADIPERR 7 /* Precise MCD exception */ 232 #define NSIGSEGV 7 233 234 /* 235 * SIGBUS si_codes 236 */ 237 #define BUS_ADRALN 1 /* invalid address alignment */ 238 #define BUS_ADRERR 2 /* non-existent physical address */ 239 #define BUS_OBJERR 3 /* object specific hardware error */ 240 /* hardware memory error consumed on a machine check: action required */ 241 #define BUS_MCEERR_AR 4 242 /* hardware memory error detected in process but not consumed: action optional*/ 243 #define BUS_MCEERR_AO 5 244 #define NSIGBUS 5 245 246 /* 247 * SIGTRAP si_codes 248 */ 249 #define TRAP_BRKPT 1 /* process breakpoint */ 250 #define TRAP_TRACE 2 /* process trace trap */ 251 #define TRAP_BRANCH 3 /* process taken branch trap */ 252 #define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */ 253 #define TRAP_UNK 5 /* undiagnosed trap */ 254 #define NSIGTRAP 5 255 256 /* 257 * There is an additional set of SIGTRAP si_codes used by ptrace 258 * that are of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP) 259 */ 260 261 /* 262 * SIGCHLD si_codes 263 */ 264 #define CLD_EXITED 1 /* child has exited */ 265 #define CLD_KILLED 2 /* child was killed */ 266 #define CLD_DUMPED 3 /* child terminated abnormally */ 267 #define CLD_TRAPPED 4 /* traced child has trapped */ 268 #define CLD_STOPPED 5 /* child has stopped */ 269 #define CLD_CONTINUED 6 /* stopped child has continued */ 270 #define NSIGCHLD 6 271 272 /* 273 * SIGPOLL (or any other signal without signal specific si_codes) si_codes 274 */ 275 #define POLL_IN 1 /* data input available */ 276 #define POLL_OUT 2 /* output buffers available */ 277 #define POLL_MSG 3 /* input message available */ 278 #define POLL_ERR 4 /* i/o error */ 279 #define POLL_PRI 5 /* high priority input available */ 280 #define POLL_HUP 6 /* device disconnected */ 281 #define NSIGPOLL 6 282 283 /* 284 * SIGSYS si_codes 285 */ 286 #define SYS_SECCOMP 1 /* seccomp triggered */ 287 #define NSIGSYS 1 288 289 /* 290 * SIGEMT si_codes 291 */ 292 #define EMT_TAGOVF 1 /* tag overflow */ 293 #define NSIGEMT 1 294 295 /* 296 * sigevent definitions 297 * 298 * It seems likely that SIGEV_THREAD will have to be handled from 299 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 300 * thread manager then catches and does the appropriate nonsense. 301 * However, everything is written out here so as to not get lost. 302 */ 303 #define SIGEV_SIGNAL 0 /* notify via signal */ 304 #define SIGEV_NONE 1 /* other notification: meaningless */ 305 #define SIGEV_THREAD 2 /* deliver via thread creation */ 306 #define SIGEV_THREAD_ID 4 /* deliver to thread */ 307 308 /* 309 * This works because the alignment is ok on all current architectures 310 * but we leave open this being overridden in the future 311 */ 312 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE 313 #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 314 #endif 315 316 #define SIGEV_MAX_SIZE 64 317 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 318 / sizeof(int)) 319 320 typedef struct sigevent { 321 sigval_t sigev_value; 322 int sigev_signo; 323 int sigev_notify; 324 union { 325 int _pad[SIGEV_PAD_SIZE]; 326 int _tid; 327 328 struct { 329 void (*_function)(sigval_t); 330 void *_attribute; /* really pthread_attr_t */ 331 } _sigev_thread; 332 } _sigev_un; 333 } sigevent_t; 334 335 #define sigev_notify_function _sigev_un._sigev_thread._function 336 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute 337 #define sigev_notify_thread_id _sigev_un._tid 338 339 340 #endif /* _UAPI_ASM_GENERIC_SIGINFO_H */ 341
