1#ifndef _X8664_SIGINFO_H 2#define _X8664_SIGINFO_H 3 4#include <linux/types.h> 5 6typedef union sigval { 7 int sival_int; 8 void *sival_ptr; 9} sigval_t; 10 11#define SI_MAX_SIZE 128 12#define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 3) 13 14typedef struct siginfo { 15 int si_signo; 16 int si_errno; 17 int si_code; 18 19 union { 20 int _pad[SI_PAD_SIZE]; 21 22 /* kill() */ 23 struct { 24 pid_t _pid; /* sender's pid */ 25 uid_t _uid; /* sender's uid */ 26 } _kill; 27 28 /* POSIX.1b timers */ 29 struct { 30 unsigned int _timer1; 31 unsigned int _timer2; 32 } _timer; 33 34 /* POSIX.1b signals */ 35 struct { 36 pid_t _pid; /* sender's pid */ 37 uid_t _uid; /* sender's uid */ 38 sigval_t _sigval; 39 } _rt; 40 41 /* SIGCHLD */ 42 struct { 43 pid_t _pid; /* which child */ 44 uid_t _uid; /* sender's uid */ 45 int _status; /* exit code */ 46 clock_t _utime; 47 clock_t _stime; 48 } _sigchld; 49 50 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ 51 struct { 52 void *_addr; /* faulting insn/memory ref. */ 53 } _sigfault; 54 55 /* SIGPOLL */ 56 struct { 57 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 58 int _fd; 59 } _sigpoll; 60 } _sifields; 61} siginfo_t; 62 63/* 64 * How these fields are to be accessed. 65 */ 66#define si_pid _sifields._kill._pid 67#define si_uid _sifields._kill._uid 68#define si_status _sifields._sigchld._status 69#define si_utime _sifields._sigchld._utime 70#define si_stime _sifields._sigchld._stime 71#define si_value _sifields._rt._sigval 72#define si_int _sifields._rt._sigval.sival_int 73#define si_ptr _sifields._rt._sigval.sival_ptr 74#define si_addr _sifields._sigfault._addr 75#define si_band _sifields._sigpoll._band 76#define si_fd _sifields._sigpoll._fd 77 78#ifdef __KERNEL__ 79#define __SI_MASK 0xffff0000 80#define __SI_KILL (0 << 16) 81#define __SI_TIMER (1 << 16) 82#define __SI_POLL (2 << 16) 83#define __SI_FAULT (3 << 16) 84#define __SI_CHLD (4 << 16) 85#define __SI_RT (5 << 16) 86#define __SI_CODE(T,N) ((T) << 16 | ((N) & 0xffff)) 87#else 88#define __SI_KILL 0 89#define __SI_TIMER 0 90#define __SI_POLL 0 91#define __SI_FAULT 0 92#define __SI_CHLD 0 93#define __SI_RT 0 94#define __SI_CODE(T,N) (N) 95#endif 96 97/* 98 * si_code values 99 * Digital reserves positive values for kernel-generated signals. 100 * ... And Linux ignores that convention -AK. 101 */ 102#define SI_USER 0 /* sent by kill, sigsend, raise */ 103#define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 104#define SI_QUEUE -1 /* sent by sigqueue */ 105#define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */ 106#define SI_MESGQ -3 /* sent by real time mesq state change */ 107#define SI_ASYNCIO -4 /* sent by AIO completion */ 108#define SI_SIGIO -5 /* sent by queued SIGIO */ 109#define SI_TKILL -6 /* sent by tkill system call */ 110 111#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 112#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 113 114/* 115 * SIGILL si_codes 116 */ 117#define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */ 118#define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */ 119#define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */ 120#define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */ 121#define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */ 122#define ILL_PRVREG (__SI_FAULT|6) /* privileged register */ 123#define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */ 124#define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */ 125#define NSIGILL 8 126 127/* 128 * SIGFPE si_codes 129 */ 130#define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */ 131#define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */ 132#define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */ 133#define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */ 134#define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */ 135#define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */ 136#define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */ 137#define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */ 138#define NSIGFPE 8 139 140/* 141 * SIGSEGV si_codes 142 */ 143#define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ 144#define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ 145#define NSIGSEGV 2 146 147/* 148 * SIGBUS si_codes 149 */ 150#define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */ 151#define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */ 152#define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */ 153#define NSIGBUS 3 154 155/* 156 * SIGTRAP si_codes 157 */ 158#define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */ 159#define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */ 160#define NSIGTRAP 2 161 162/* 163 * SIGCHLD si_codes 164 */ 165#define CLD_EXITED (__SI_CHLD|1) /* child has exited */ 166#define CLD_KILLED (__SI_CHLD|2) /* child was killed */ 167#define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */ 168#define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */ 169#define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */ 170#define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */ 171#define NSIGCHLD 6 172 173/* 174 * SIGPOLL si_codes 175 */ 176#define POLL_IN (__SI_POLL|1) /* data input available */ 177#define POLL_OUT (__SI_POLL|2) /* output buffers available */ 178#define POLL_MSG (__SI_POLL|3) /* input message available */ 179#define POLL_ERR (__SI_POLL|4) /* i/o error */ 180#define POLL_PRI (__SI_POLL|5) /* high priority input available */ 181#define POLL_HUP (__SI_POLL|6) /* device disconnected */ 182#define NSIGPOLL 6 183 184/* 185 * sigevent definitions 186 * 187 * It seems likely that SIGEV_THREAD will have to be handled from 188 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 189 * thread manager then catches and does the appropriate nonsense. 190 * However, everything is written out here so as to not get lost. 191 */ 192#define SIGEV_SIGNAL 0 /* notify via signal */ 193#define SIGEV_NONE 1 /* other notification: meaningless */ 194#define SIGEV_THREAD 2 /* deliver via thread creation */ 195 196#define SIGEV_MAX_SIZE 64 197#define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 198 199typedef struct sigevent { 200 sigval_t sigev_value; 201 int sigev_signo; 202 int sigev_notify; 203 union { 204 int _pad[SIGEV_PAD_SIZE]; 205 206 struct { 207 void (*_function)(sigval_t); 208 void *_attribute; /* really pthread_attr_t */ 209 } _sigev_thread; 210 } _sigev_un; 211} sigevent_t; 212 213#define sigev_notify_function _sigev_un._sigev_thread._function 214#define sigev_notify_attributes _sigev_un._sigev_thread._attribute 215 216#ifdef __KERNEL__ 217#include <linux/string.h> 218 219extern inline void copy_siginfo(siginfo_t *to, siginfo_t *from) 220{ 221 if (from->si_code < 0) 222 memcpy(to, from, sizeof(siginfo_t)); 223 else 224 /* _sigchld is currently the largest know union member */ 225 memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld)); 226} 227 228extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from); 229 230#endif /* __KERNEL__ */ 231 232#endif 233