sysdeps/unix/sysv/linux/alpha/bits/siginfo.h

   1 /* siginfo_t, sigevent and constants.  Linux/Alpha version.
   2    Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #if !defined _SIGNAL_H && !defined __need_siginfo_t \
  21     && !defined __need_sigevent_t
  22 # error "Never include this file directly.  Use <signal.h> instead"
  23 #endif
  24
  25 #include <bits/wordsize.h>
  26
  27 #if (!defined __have_sigval_t \
  28      && (defined _SIGNAL_H || defined __need_siginfo_t \
  29          || defined __need_sigevent_t))
  30 # define __have_sigval_t        1
  31
  32 /* Type for data associated with a signal.  */
  33 typedef union sigval
  34   {
  35     int sival_int;
  36     void *sival_ptr;
  37   } sigval_t;
  38 #endif
  39
  40 #if (!defined __have_siginfo_t \
  41      && (defined _SIGNAL_H || defined __need_siginfo_t))
  42 # define __have_siginfo_t       1
  43
  44 # define __SI_MAX_SIZE     128
  45 # if __WORDSIZE == 64
  46 #  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
  47 # else
  48 #  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
  49 # endif
  50
  51 typedef struct siginfo
  52   {
  53     int si_signo;               /* Signal number.  */
  54     int si_errno;               /* If non-zero, an errno value associated with
  55                                    this signal, as defined in <errno.h>.  */
  56     int si_code;                /* Signal code.  */
  57
  58     union
  59       {
  60         int _pad[__SI_PAD_SIZE];
  61
  62          /* kill().  */
  63         struct
  64           {
  65             __pid_t si_pid;     /* Sending process ID.  */
  66             __uid_t si_uid;     /* Real user ID of sending process.  */
  67           } _kill;
  68
  69         /* POSIX.1b timers.  */
  70         struct
  71           {
  72             unsigned int _timer1;
  73             unsigned int _timer2;
  74           } _timer;
  75
  76         /* POSIX.1b signals.  */
  77         struct
  78           {
  79             __pid_t si_pid;     /* Sending process ID.  */
  80             __uid_t si_uid;     /* Real user ID of sending process.  */
  81             sigval_t si_sigval; /* Signal value.  */
  82           } _rt;
  83
  84         /* SIGCHLD.  */
  85         struct
  86           {
  87             __pid_t si_pid;     /* Which child.  */
  88             __uid_t si_uid;     /* Real user ID of sending process.  */
  89             int si_status;      /* Exit value or signal.  */
  90             __clock_t si_utime;
  91             __clock_t si_stime;
  92           } _sigchld;
  93
  94         /* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
  95         struct
  96           {
  97             void *si_addr;      /* Faulting insn/memory ref.  */
  98           } _sigfault;
  99
 100         /* SIGPOLL.  */
 101         struct
 102           {
 103             int si_band;        /* Band event for SIGPOLL.  */
 104             int si_fd;
 105           } _sigpoll;
 106       } _sifields;
 107   } siginfo_t;
 108
 109
 110 /* X/Open requires some more fields with fixed names.  */
 111 # define si_pid         _sifields._kill.si_pid
 112 # define si_uid         _sifields._kill.si_uid
 113 # define si_timer1      _sifields._timer._timer1
 114 # define si_timer2      _sifields._timer._timer2
 115 # define si_status      _sifields._sigchld.si_status
 116 # define si_utime       _sifields._sigchld.si_utime
 117 # define si_stime       _sifields._sigchld.si_stime
 118 # define si_value       _sifields._rt.si_sigval
 119 # define si_int         _sifields._rt.si_sigval.sival_int
 120 # define si_ptr         _sifields._rt.si_sigval.sival_ptr
 121 # define si_addr        _sifields._sigfault.si_addr
 122 # define si_band        _sifields._sigpoll.si_band
 123 # define si_fd          _sifields._sigpoll.si_fd
 124
 125
 126 /* Values for `si_code'.  Positive values are reserved for kernel-generated
 127    signals.  */
 128 enum
 129 {
 130   SI_SIGIO = -5,                /* Sent by queued SIGIO. */
 131 # define SI_SIGIO       SI_SIGIO
 132   SI_ASYNCIO,                   /* Sent by AIO completion.  */
 133 # define SI_ASYNCIO     SI_ASYNCIO
 134   SI_MESGQ,                     /* Sent by real time mesq state change.  */
 135 # define SI_MESGQ       SI_MESGQ
 136   SI_TIMER,                     /* Sent by timer expiration.  */
 137 # define SI_TIMER       SI_TIMER
 138   SI_QUEUE,                     /* Sent by sigqueue.  */
 139 # define SI_QUEUE       SI_QUEUE
 140   SI_USER,                      /* Sent by kill, sigsend, raise.  */
 141 # define SI_USER        SI_USER
 142   SI_KERNEL = 0x80              /* Send by kernel.  */
 143 #define SI_KERNEL       SI_KERNEL
 144 };
 145
 146
 147 /* `si_code' values for SIGILL signal.  */
 148 enum
 149 {
 150   ILL_ILLOPC = 1,               /* Illegal opcode.  */
 151 # define ILL_ILLOPC     ILL_ILLOPC
 152   ILL_ILLOPN,                   /* Illegal operand.  */
 153 # define ILL_ILLOPN     ILL_ILLOPN
 154   ILL_ILLADR,                   /* Illegal addressing mode.  */
 155 # define ILL_ILLADR     ILL_ILLADR
 156   ILL_ILLTRP,                   /* Illegal trap. */
 157 # define ILL_ILLTRP     ILL_ILLTRP
 158   ILL_PRVOPC,                   /* Privileged opcode.  */
 159 # define ILL_PRVOPC     ILL_PRVOPC
 160   ILL_PRVREG,                   /* Privileged register.  */
 161 # define ILL_PRVREG     ILL_PRVREG
 162   ILL_COPROC,                   /* Coprocessor error.  */
 163 # define ILL_COPROC     ILL_COPROC
 164   ILL_BADSTK                    /* Internal stack error.  */
 165 # define ILL_BADSTK     ILL_BADSTK
 166 };
 167
 168 /* `si_code' values for SIGFPE signal.  */
 169 enum
 170 {
 171   FPE_INTDIV = 1,               /* Integer divide by zero.  */
 172 # define FPE_INTDIV     FPE_INTDIV
 173   FPE_INTOVF,                   /* Integer overflow.  */
 174 # define FPE_INTOVF     FPE_INTOVF
 175   FPE_FLTDIV,                   /* Floating point divide by zero.  */
 176 # define FPE_FLTDIV     FPE_FLTDIV
 177   FPE_FLTOVF,                   /* Floating point overflow.  */
 178 # define FPE_FLTOVF     FPE_FLTOVF
 179   FPE_FLTUND,                   /* Floating point underflow.  */
 180 # define FPE_FLTUND     FPE_FLTUND
 181   FPE_FLTRES,                   /* Floating point inexact result.  */
 182 # define FPE_FLTRES     FPE_FLTRES
 183   FPE_FLTINV,                   /* Floating point invalid operation.  */
 184 # define FPE_FLTINV     FPE_FLTINV
 185   FPE_FLTSUB                    /* Subscript out of range.  */
 186 # define FPE_FLTSUB     FPE_FLTSUB
 187 };
 188
 189 /* `si_code' values for SIGSEGV signal.  */
 190 enum
 191 {
 192   SEGV_MAPERR = 1,              /* Address not mapped to object.  */
 193 # define SEGV_MAPERR    SEGV_MAPERR
 194   SEGV_ACCERR                   /* Invalid permissions for mapped object.  */
 195 # define SEGV_ACCERR    SEGV_ACCERR
 196 };
 197
 198 /* `si_code' values for SIGBUS signal.  */
 199 enum
 200 {
 201   BUS_ADRALN = 1,               /* Invalid address alignment.  */
 202 # define BUS_ADRALN     BUS_ADRALN
 203   BUS_ADRERR,                   /* Non-existant physical address.  */
 204 # define BUS_ADRERR     BUS_ADRERR
 205   BUS_OBJERR                    /* Object specific hardware error.  */
 206 # define BUS_OBJERR     BUS_OBJERR
 207 };
 208
 209 /* `si_code' values for SIGTRAP signal.  */
 210 enum
 211 {
 212   TRAP_BRKPT = 1,               /* Process breakpoint.  */
 213 # define TRAP_BRKPT     TRAP_BRKPT
 214   TRAP_TRACE                    /* Process trace trap.  */
 215 # define TRAP_TRACE     TRAP_TRACE
 216 };
 217
 218 /* `si_code' values for SIGCHLD signal.  */
 219 enum
 220 {
 221   CLD_EXITED = 1,               /* Child has exited.  */
 222 # define CLD_EXITED     CLD_EXITED
 223   CLD_KILLED,                   /* Child was killed.  */
 224 # define CLD_KILLED     CLD_KILLED
 225   CLD_DUMPED,                   /* Child terminated abnormally.  */
 226 # define CLD_DUMPED     CLD_DUMPED
 227   CLD_TRAPPED,                  /* Traced child has trapped.  */
 228 # define CLD_TRAPPED    CLD_TRAPPED
 229   CLD_STOPPED,                  /* Child has stopped.  */
 230 # define CLD_STOPPED    CLD_STOPPED
 231   CLD_CONTINUED                 /* Stopped child has continued.  */
 232 # define CLD_CONTINUED  CLD_CONTINUED
 233 };
 234
 235 /* `si_code' values for SIGPOLL signal.  */
 236 enum
 237 {
 238   POLL_IN = 1,                  /* Data input available.  */
 239 # define POLL_IN        POLL_IN
 240   POLL_OUT,                     /* Output buffers available.  */
 241 # define POLL_OUT       POLL_OUT
 242   POLL_MSG,                     /* Input message available.   */
 243 # define POLL_MSG       POLL_MSG
 244   POLL_ERR,                     /* I/O error.  */
 245 # define POLL_ERR       POLL_ERR
 246   POLL_PRI,                     /* High priority input available.  */
 247 # define POLL_PRI       POLL_PRI
 248   POLL_HUP                      /* Device disconnected.  */
 249 # define POLL_HUP       POLL_HUP
 250 };
 251
 252 # undef __need_siginfo_t
 253 #endif  /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
 254
 255
 256 #if (defined _SIGNAL_H || defined __need_sigevent_t) \
 257     && !defined __have_sigevent_t
 258 # define __have_sigevent_t      1
 259
 260 /* Structure to transport application-defined values with signals.  */
 261 # define __SIGEV_MAX_SIZE       64
 262 # if __WORDSIZE == 64
 263 #  define __SIGEV_PAD_SIZE      ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
 264 # else
 265 #  define __SIGEV_PAD_SIZE      ((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
 266 # endif
 267
 268 /* Forward declaration of the `pthread_attr_t' type.  */
 269 struct __pthread_attr_s;
 270
 271 typedef struct sigevent
 272   {
 273     sigval_t sigev_value;
 274     int sigev_signo;
 275     int sigev_notify;
 276
 277     union
 278       {
 279         int _pad[__SIGEV_PAD_SIZE];
 280
 281         struct
 282           {
 283             void (*_function) (sigval_t);         /* Function to start.  */
 284             struct __pthread_attr_s *_attribute;  /* Really pthread_attr_t.  */
 285           } _sigev_thread;
 286       } _sigev_un;
 287   } sigevent_t;
 288
 289 /* POSIX names to access some of the members.  */
 290 # define sigev_notify_function   _sigev_un._sigev_thread._function
 291 # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 292
 293 /* `sigev_notify' values.  */
 294 enum
 295 {
 296   SIGEV_SIGNAL = 0,             /* Notify via signal.  */
 297 # define SIGEV_SIGNAL   SIGEV_SIGNAL
 298   SIGEV_NONE,                   /* Other notification: meaningless.  */
 299 # define SIGEV_NONE     SIGEV_NONE
 300   SIGEV_THREAD                  /* Deliver via thread creation.  */
 301 # define SIGEV_THREAD   SIGEV_THREAD
 302 };
 303
 304 #endif  /* have _SIGNAL_H.  */