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