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 } _sifields; 94 } siginfo_t; 95 96 #endif 97 98 /* 99 * How these fields are to be accessed. 100 */ 101 #define si_pid _sifields._kill._pid 102 #define si_uid _sifields._kill._uid 103 #define si_tid _sifields._timer._tid 104 #define si_overrun _sifields._timer._overrun 105 #define si_sys_private _sifields._timer._sys_private 106 #define si_status _sifields._sigchld._status 107 #define si_utime _sifields._sigchld._utime 108 #define si_stime _sifields._sigchld._stime 109 #define si_value _sifields._rt._sigval 110 #define si_int _sifields._rt._sigval.sival_int 111 #define si_ptr _sifields._rt._sigval.sival_ptr 112 #define si_addr _sifields._sigfault._addr 113 #ifdef __ARCH_SI_TRAPNO 114 #define si_trapno _sifields._sigfault._trapno 115 #endif 116 #define si_addr_lsb _sifields._sigfault._addr_lsb 117 #define si_band _sifields._sigpoll._band 118 #define si_fd _sifields._sigpoll._fd 119 120 #define __SI_KILL 0 121 #define __SI_TIMER 0 122 #define __SI_POLL 0 123 #define __SI_FAULT 0 124 #define __SI_CHLD 0 125 #define __SI_RT 0 126 #define __SI_MESGQ 0 127 #define __SI_CODE(T,N) (N) 128 129 /* 130 * si_code values 131 * Digital reserves positive values for kernel-generated signals. 132 */ 133 #define SI_USER 0 /* sent by kill, sigsend, raise */ 134 #define SI_KERNEL 0x80 /* sent by the kernel from somewhere */ 135 #define SI_QUEUE -1 /* sent by sigqueue */ 136 #define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */ 137 #define SI_MESGQ __SI_CODE(__SI_MESGQ,-3) /* sent by real time mesq state change */ 138 #define SI_ASYNCIO -4 /* sent by AIO completion */ 139 #define SI_SIGIO -5 /* sent by queued SIGIO */ 140 #define SI_TKILL -6 /* sent by tkill system call */ 141 #define SI_DETHREAD -7 /* sent by execve() killing subsidiary threads */ 142 143 #define SI_FROMUSER(siptr) ((siptr)->si_code <= 0) 144 #define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0) 145 146 /* 147 * SIGILL si_codes 148 */ 149 #define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */ 150 #define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */ 151 #define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */ 152 #define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */ 153 #define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */ 154 #define ILL_PRVREG (__SI_FAULT|6) /* privileged register */ 155 #define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */ 156 #define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */ 157 #define NSIGILL 8 158 159 /* 160 * SIGFPE si_codes 161 */ 162 #define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */ 163 #define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */ 164 #define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */ 165 #define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */ 166 #define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */ 167 #define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */ 168 #define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */ 169 #define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */ 170 #define NSIGFPE 8 171 172 /* 173 * SIGSEGV si_codes 174 */ 175 #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ 176 #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ 177 #define NSIGSEGV 2 178 179 /* 180 * SIGBUS si_codes 181 */ 182 #define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */ 183 #define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */ 184 #define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */ 185 /* hardware memory error consumed on a machine check: action required */ 186 #define BUS_MCEERR_AR (__SI_FAULT|4) 187 /* hardware memory error detected in process but not consumed: action optional*/ 188 #define BUS_MCEERR_AO (__SI_FAULT|5) 189 #define NSIGBUS 5 190 191 /* 192 * SIGTRAP si_codes 193 */ 194 #define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */ 195 #define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */ 196 #define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */ 197 #define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint/watchpoint */ 198 #define NSIGTRAP 4 199 200 /* 201 * SIGCHLD si_codes 202 */ 203 #define CLD_EXITED (__SI_CHLD|1) /* child has exited */ 204 #define CLD_KILLED (__SI_CHLD|2) /* child was killed */ 205 #define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */ 206 #define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */ 207 #define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */ 208 #define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */ 209 #define NSIGCHLD 6 210 211 /* 212 * SIGPOLL si_codes 213 */ 214 #define POLL_IN (__SI_POLL|1) /* data input available */ 215 #define POLL_OUT (__SI_POLL|2) /* output buffers available */ 216 #define POLL_MSG (__SI_POLL|3) /* input message available */ 217 #define POLL_ERR (__SI_POLL|4) /* i/o error */ 218 #define POLL_PRI (__SI_POLL|5) /* high priority input available */ 219 #define POLL_HUP (__SI_POLL|6) /* device disconnected */ 220 #define NSIGPOLL 6 221 222 /* 223 * sigevent definitions 224 * 225 * It seems likely that SIGEV_THREAD will have to be handled from 226 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the 227 * thread manager then catches and does the appropriate nonsense. 228 * However, everything is written out here so as to not get lost. 229 */ 230 #define SIGEV_SIGNAL 0 /* notify via signal */ 231 #define SIGEV_NONE 1 /* other notification: meaningless */ 232 #define SIGEV_THREAD 2 /* deliver via thread creation */ 233 #define SIGEV_THREAD_ID 4 /* deliver to thread */ 234 235 /* 236 * This works because the alignment is ok on all current architectures 237 * but we leave open this being overridden in the future 238 */ 239 #ifndef __ARCH_SIGEV_PREAMBLE_SIZE 240 #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(int) * 2 + sizeof(sigval_t)) 241 #endif 242 243 #define SIGEV_MAX_SIZE 64 244 #define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) \ 245 / sizeof(int)) 246 247 typedef struct sigevent { 248 sigval_t sigev_value; 249 int sigev_signo; 250 int sigev_notify; 251 union { 252 int _pad[SIGEV_PAD_SIZE]; 253 int _tid; 254 255 struct { 256 void (*_function)(sigval_t); 257 void *_attribute; /* really pthread_attr_t */ 258 } _sigev_thread; 259 } _sigev_un; 260 } sigevent_t; 261 262 #define sigev_notify_function _sigev_un._sigev_thread._function 263 #define sigev_notify_attributes _sigev_un._sigev_thread._attribute 264 #define sigev_notify_thread_id _sigev_un._tid 265 266 267 #endif 268
