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

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