1 #ifndef _ASM_GENERIC_SIGINFO_H 2 #define _ASM_GENERIC_SIGINFO_H 3 4 5 #include <linux/types.h> 6 7 typedef union sigval { 8 int sival_int; 9 void *sival_ptr; 10 } sigval_t; 11 12 /* 13 * This is the size (including padding) of the part of the 14 * struct siginfo that is before the union. 15 */ 16 #ifndef __ARCH_SI_PREAMBLE_SIZE 17 #define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int)) 18 #endif 19 20 #define SI_MAX_SIZE 128 21 #ifndef SI_PAD_SIZE 22 #define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int)) 23 #endif 24 25 #ifndef __ARCH_SI_UID_T 26 #define __ARCH_SI_UID_T __kernel_uid32_t 27 #endif 28 29 /* 30 * The default "si_band" type is "long", as specified by POSIX. 31 * However, some architectures want to override this to "int" 32 * for historical compatibility reasons, so we allow that. 33 */ 34 #ifndef __ARCH_SI_BAND_T 35 #define __ARCH_SI_BAND_T long 36 #endif 37 38 #ifndef HAVE_ARCH_SIGINFO_T 39 40 typedef struct siginfo { 41 int si_signo; 42 int si_errno; 43 int si_code; 44 45 union { 46 int _pad[SI_PAD_SIZE]; 47 48 /* kill() */ 49 struct { 50 __kernel_pid_t _pid; /* sender's pid */ 51 __ARCH_SI_UID_T _uid; /* sender's uid */ 52 } _kill; 53 54 /* POSIX.1b timers */ 55 struct { 56 __kernel_timer_t _tid; /* timer id */ 57 int _overrun; /* overrun count */ 58 char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)]; 59 sigval_t _sigval; /* same as below */ 60 int _sys_private; /* not to be passed to user */ 61 } _timer; 62 63 /* POSIX.1b signals */ 64 struct { 65 __kernel_pid_t _pid; /* sender's pid */ 66 __ARCH_SI_UID_T _uid; /* sender's uid */ 67 sigval_t _sigval; 68 } _rt; 69 70 /* SIGCHLD */ 71 struct { 72 __kernel_pid_t _pid; /* which child */ 73 __ARCH_SI_UID_T _uid; /* sender's uid */ 74 int _status; /* exit code */ 75 __kernel_clock_t _utime; 76 __kernel_clock_t _stime; 77 } _sigchld; 78 79 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ 80 struct { 81 void *_addr; /* faulting insn/memory ref. */ 82 #ifdef __ARCH_SI_TRAPNO 83 int _trapno; /* TRAP # which caused the signal */ 84 #endif 85 short _addr_lsb; /* LSB of the reported address */ 86 } _sigfault; 87 88 /* SIGPOLL */ 89 struct { 90 __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 91 int _fd; 92 } _sigpoll; 93 94 /* SIGSYS */ 95 struct { 96 void *_call_addr; /* calling user insn */ 97 int _syscall; /* triggering system call number */ 98 unsigned int _arch; /* AUDIT_ARCH_* of syscall */ 99 } _sigsys; 100 } _sifields; 101 } siginfo_t; 102 103 /* If the arch shares siginfo, then it has SIGSYS. */ 104 #define __ARCH_SIGSYS 105 #endif 106 107 /* 108 * How these fields are to be accessed. 109 */ 110 #define si_pid _sifields._kill._pid 111 #define si_uid _sifields._kill._uid 112 #define si_tid _sifields._timer._tid 113 #define si_overrun _sifields._timer._overrun 114 #define si_sys_private _sifields._timer._sys_private 115 #define si_status _sifields._sigchld._status 116 #define si_utime _sifields._sigchld._utime 117 #define si_stime _sifields._sigchld._stime 118 #define si_value _sifields._rt._sigval 119 #define si_int _sifields._rt._sigval.sival_int 120 #define si_ptr _sifields._rt._sigval.sival_ptr 121 #define si_addr _sifields._sigfault._addr 122 #ifdef __ARCH_SI_TRAPNO 123 #define si_trapno _sifields._sigfault._trapno 124 #endif 125 #define si_addr_lsb _sifields._sigfault._addr_lsb 126 #define si_band _sifields._sigpoll._band 127 #define si_fd _sifields._sigpoll._fd 128 #ifdef __ARCH_SIGSYS 129 #define si_call_addr _sifields._sigsys._call_addr 130 #define si_syscall _sifields._sigsys._syscall 131 #define si_arch _sifields._sigsys._arch 132 #endif 133 134 #define __SI_KILL 0 135 #define __SI_TIMER 0 136 #define __SI_POLL 0 137 #define __SI_FAULT 0 138 #define __SI_CHLD 0 139 #define __SI_RT 0 140 #define __SI_MESGQ 0 141 #define __SI_SYS 0 142 #define __SI_CODE(T,N) (N) 143 144 /* 145 * si_code values 146 * Digital reserves positive values for kernel-generated signals. 147 */ 148 #define SI_USER 0 /* sent by kill, sigsend, raise */ 149 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 150 #define SI_QUEUE -1 /* sent by sigqueue */ 151 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */ 152 #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */ 153 #define SI_ASYNCIO -4 /* sent by AIO completion */ 154 #define SI_SIGIO -5 /* sent by queued SIGIO */ 155 #define SI_TKILL -6 /* sent by tkill system call */ 156 #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 157 158 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 159 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 160 161 /* 162 * SIGILL si_codes 163 */ 164 #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */ 165 #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */ 166 #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */ 167 #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */ 168 #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */ 169 #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */ 170 #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */ 171 #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */ 172 #define NSIGILL 8 173 174 /* 175 * SIGFPE si_codes 176 */ 177 #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */ 178 #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */ 179 #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */ 180 #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */ 181 #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */ 182 #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */ 183 #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */ 184 #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */ 185 #define NSIGFPE 8 186 187 /* 188 * SIGSEGV si_codes 189 */ 190 #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ 191 #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ 192 #define NSIGSEGV 2 193 194 /* 195 * SIGBUS si_codes 196 */ 197 #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */ 198 #define BUS_ADRERR (__SI_FAULT|2) /* non-existent physical address */ 199 #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */ 200 /* hardware memory error consumed on a machine check: action required */ 201 #define BUS_MCEERR_AR (__SI_FAULT|4) 202 /* hardware memory error detected in process but not consumed: action optional*/ 203 #define BUS_MCEERR_AO (__SI_FAULT|5) 204 #define NSIGBUS 5 205 206 /* 207 * SIGTRAP si_codes 208 */ 209 #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */ 210 #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */ 211 #define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */ 212 #define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint/watchpoint */ 213 #define NSIGTRAP 4 214 215 /* 216 * SIGCHLD si_codes 217 */ 218 #define CLD_EXITED (__SI_CHLD|1) /* child has exited */ 219 #define CLD_KILLED (__SI_CHLD|2) /* child was killed */ 220 #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */ 221 #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */ 222 #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */ 223 #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */ 224 #define NSIGCHLD 6 225 226 /* 227 * SIGPOLL si_codes 228 */ 229 #define POLL_IN (__SI_POLL|1) /* data input available */ 230 #define POLL_OUT (__SI_POLL|2) /* output buffers available */ 231 #define POLL_MSG (__SI_POLL|3) /* input message available */ 232 #define POLL_ERR (__SI_POLL|4) /* i/o error */ 233 #define POLL_PRI (__SI_POLL|5) /* high priority input available */ 234 #define POLL_HUP (__SI_POLL|6) /* device disconnected */ 235 #define NSIGPOLL 6 236 237 /* 238 * SIGSYS si_codes 239 */ 240 #define SYS_SECCOMP (__SI_SYS|1) /* seccomp triggered */ 241 #define NSIGSYS 1 242 243 /* 244 * sigevent definitions 245 * 246 * It seems likely that SIGEV_THREAD will have to be handled from 247 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 248 * thread manager then catches and does the appropriate nonsense. 249 * However, everything is written out here so as to not get lost. 250 */ 251 #define SIGEV_SIGNAL 0 /* notify via signal */ 252 #define SIGEV_NONE 1 /* other notification: meaningless */ 253 #define SIGEV_THREAD 2 /* deliver via thread creation */ 254 #define SIGEV_THREAD_ID 4 /* deliver to thread */ 255 256 /* 257 * This works because the alignment is ok on all current architectures 258 * but we leave open this being overridden in the future 259 */ 260 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE 261 #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 262 #endif 263 264 #define SIGEV_MAX_SIZE 64 265 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 266 / sizeof(int)) 267 268 typedef struct sigevent { 269 sigval_t sigev_value; 270 int sigev_signo; 271 int sigev_notify; 272 union { 273 int _pad[SIGEV_PAD_SIZE]; 274 int _tid; 275 276 struct { 277 void (*_function)(sigval_t); 278 void *_attribute; /* really pthread_attr_t */ 279 } _sigev_thread; 280 } _sigev_un; 281 } sigevent_t; 282 283 #define sigev_notify_function _sigev_un._sigev_thread._function 284 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute 285 #define sigev_notify_thread_id _sigev_un._tid 286 287 288 #endif 289
