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

   1 /* siginfo_t, sigevent and constants.  Linux/Alpha version.
   2    Copyright (C) 1997-2002, 2003 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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    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 #if (!defined __have_sigval_t \
  26      && (defined _SIGNAL_H || defined __need_siginfo_t \
  27          || defined __need_sigevent_t))
  28 # define __have_sigval_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 #endif
  37
  38 #if (!defined __have_siginfo_t \
  39      && (defined _SIGNAL_H || defined __need_siginfo_t))
  40 # define __have_siginfo_t       1
  41
  42 # define __SI_MAX_SIZE     128
  43 # define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
  44
  45 typedef struct siginfo
  46   {
  47     int si_signo;               /* Signal number.  */
  48     int si_errno;               /* If non-zero, an errno value associated with
  49                                    this signal, as defined in <errno.h>.  */
  50     int si_code;                /* Signal code.  */
  51
  52     union
  53       {
  54         int _pad[__SI_PAD_SIZE];
  55
  56          /* kill().  */
  57         struct
  58           {
  59             __pid_t si_pid;     /* Sending process ID.  */
  60             __uid_t si_uid;     /* Real user ID of sending process.  */
  61           } _kill;
  62
  63         /* POSIX.1b timers.  */
  64         struct
  65           {
  66             int si_tid;         /* Timer ID.  */
  67             int si_overrun;     /* Overrun count.  */
  68             sigval_t si_sigval; /* Signal value.  */
  69           } _timer;
  70
  71         /* POSIX.1b signals.  */
  72         struct
  73           {
  74             __pid_t si_pid;     /* Sending process ID.  */
  75             __uid_t si_uid;     /* Real user ID of sending process.  */
  76             sigval_t si_sigval; /* Signal value.  */
  77           } _rt;
  78
  79         /* SIGCHLD.  */
  80         struct
  81           {
  82             __pid_t si_pid;     /* Which child.  */
  83             __uid_t si_uid;     /* Real user ID of sending process.  */
  84             int si_status;      /* Exit value or signal.  */
  85             __clock_t si_utime;
  86             __clock_t si_stime;
  87           } _sigchld;
  88
  89         /* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
  90         struct
  91           {
  92             void *si_addr;      /* Faulting insn/memory ref.  */
  93           } _sigfault;
  94
  95         /* SIGPOLL.  */
  96         struct
  97           {
  98             int si_band;        /* Band event for SIGPOLL.  */
  99             int si_fd;
 100           } _sigpoll;
 101       } _sifields;
 102   } siginfo_t;
 103
 104
 105 /* X/Open requires some more fields with fixed names.  */
 106 # define si_pid         _sifields._kill.si_pid
 107 # define si_uid         _sifields._kill.si_uid
 108 # define si_timerid     _sifields._timer.si_tid
 109 # define si_overrun     _sifields._timer.si_overrun
 110 # define si_status      _sifields._sigchld.si_status
 111 # define si_utime       _sifields._sigchld.si_utime
 112 # define si_stime       _sifields._sigchld.si_stime
 113 # define si_value       _sifields._rt.si_sigval
 114 # define si_int         _sifields._rt.si_sigval.sival_int
 115 # define si_ptr         _sifields._rt.si_sigval.sival_ptr
 116 # define si_addr        _sifields._sigfault.si_addr
 117 # define si_band        _sifields._sigpoll.si_band
 118 # define si_fd          _sifields._sigpoll.si_fd
 119
 120
 121 /* Values for `si_code'.  Positive values are reserved for kernel-generated
 122    signals.  */
 123 enum
 124 {
 125   SI_ASYNCNL = -60,             /* Sent by asynch name lookup completion.  */
 126 # define SI_ASYNCNL     SI_ASYNCNL
 127   SI_TKILL = -6,                /* Sent by tkill.  */
 128 # define SI_TKILL       SI_TKILL
 129   SI_SIGIO,                     /* Sent by queued SIGIO. */
 130 # define SI_SIGIO       SI_SIGIO
 131   SI_ASYNCIO,                   /* Sent by AIO completion.  */
 132 # define SI_ASYNCIO     SI_ASYNCIO
 133   SI_MESGQ,                     /* Sent by real time mesq state change.  */
 134 # define SI_MESGQ       SI_MESGQ
 135   SI_TIMER,                     /* Sent by timer expiration.  */
 136 # define SI_TIMER       SI_TIMER
 137   SI_QUEUE,                     /* Sent by sigqueue.  */
 138 # define SI_QUEUE       SI_QUEUE
 139   SI_USER,                      /* Sent by kill, sigsend, raise.  */
 140 # define SI_USER        SI_USER
 141   SI_KERNEL = 0x80              /* Send by kernel.  */
 142 #define SI_KERNEL       SI_KERNEL
 143 };
 144
 145
 146 /* `si_code' values for SIGILL signal.  */
 147 enum
 148 {
 149   ILL_ILLOPC = 1,               /* Illegal opcode.  */
 150 # define ILL_ILLOPC     ILL_ILLOPC
 151   ILL_ILLOPN,                   /* Illegal operand.  */
 152 # define ILL_ILLOPN     ILL_ILLOPN
 153   ILL_ILLADR,                   /* Illegal addressing mode.  */
 154 # define ILL_ILLADR     ILL_ILLADR
 155   ILL_ILLTRP,                   /* Illegal trap. */
 156 # define ILL_ILLTRP     ILL_ILLTRP
 157   ILL_PRVOPC,                   /* Privileged opcode.  */
 158 # define ILL_PRVOPC     ILL_PRVOPC
 159   ILL_PRVREG,                   /* Privileged register.  */
 160 # define ILL_PRVREG     ILL_PRVREG
 161   ILL_COPROC,                   /* Coprocessor error.  */
 162 # define ILL_COPROC     ILL_COPROC
 163   ILL_BADSTK                    /* Internal stack error.  */
 164 # define ILL_BADSTK     ILL_BADSTK
 165 };
 166
 167 /* `si_code' values for SIGFPE signal.  */
 168 enum
 169 {
 170   FPE_INTDIV = 1,               /* Integer divide by zero.  */
 171 # define FPE_INTDIV     FPE_INTDIV
 172   FPE_INTOVF,                   /* Integer overflow.  */
 173 # define FPE_INTOVF     FPE_INTOVF
 174   FPE_FLTDIV,                   /* Floating point divide by zero.  */
 175 # define FPE_FLTDIV     FPE_FLTDIV
 176   FPE_FLTOVF,                   /* Floating point overflow.  */
 177 # define FPE_FLTOVF     FPE_FLTOVF
 178   FPE_FLTUND,                   /* Floating point underflow.  */
 179 # define FPE_FLTUND     FPE_FLTUND
 180   FPE_FLTRES,                   /* Floating point inexact result.  */
 181 # define FPE_FLTRES     FPE_FLTRES
 182   FPE_FLTINV,                   /* Floating point invalid operation.  */
 183 # define FPE_FLTINV     FPE_FLTINV
 184   FPE_FLTSUB                    /* Subscript out of range.  */
 185 # define FPE_FLTSUB     FPE_FLTSUB
 186 };
 187
 188 /* `si_code' values for SIGSEGV signal.  */
 189 enum
 190 {
 191   SEGV_MAPERR = 1,              /* Address not mapped to object.  */
 192 # define SEGV_MAPERR    SEGV_MAPERR
 193   SEGV_ACCERR                   /* Invalid permissions for mapped object.  */
 194 # define SEGV_ACCERR    SEGV_ACCERR
 195 };
 196
 197 /* `si_code' values for SIGBUS signal.  */
 198 enum
 199 {
 200   BUS_ADRALN = 1,               /* Invalid address alignment.  */
 201 # define BUS_ADRALN     BUS_ADRALN
 202   BUS_ADRERR,                   /* Non-existant physical address.  */
 203 # define BUS_ADRERR     BUS_ADRERR
 204   BUS_OBJERR                    /* Object specific hardware error.  */
 205 # define BUS_OBJERR     BUS_OBJERR
 206 };
 207
 208 /* `si_code' values for SIGTRAP signal.  */
 209 enum
 210 {
 211   TRAP_BRKPT = 1,               /* Process breakpoint.  */
 212 # define TRAP_BRKPT     TRAP_BRKPT
 213   TRAP_TRACE                    /* Process trace trap.  */
 214 # define TRAP_TRACE     TRAP_TRACE
 215 };
 216
 217 /* `si_code' values for SIGCHLD signal.  */
 218 enum
 219 {
 220   CLD_EXITED = 1,               /* Child has exited.  */
 221 # define CLD_EXITED     CLD_EXITED
 222   CLD_KILLED,                   /* Child was killed.  */
 223 # define CLD_KILLED     CLD_KILLED
 224   CLD_DUMPED,                   /* Child terminated abnormally.  */
 225 # define CLD_DUMPED     CLD_DUMPED
 226   CLD_TRAPPED,                  /* Traced child has trapped.  */
 227 # define CLD_TRAPPED    CLD_TRAPPED
 228   CLD_STOPPED,                  /* Child has stopped.  */
 229 # define CLD_STOPPED    CLD_STOPPED
 230   CLD_CONTINUED                 /* Stopped child has continued.  */
 231 # define CLD_CONTINUED  CLD_CONTINUED
 232 };
 233
 234 /* `si_code' values for SIGPOLL signal.  */
 235 enum
 236 {
 237   POLL_IN = 1,                  /* Data input available.  */
 238 # define POLL_IN        POLL_IN
 239   POLL_OUT,                     /* Output buffers available.  */
 240 # define POLL_OUT       POLL_OUT
 241   POLL_MSG,                     /* Input message available.   */
 242 # define POLL_MSG       POLL_MSG
 243   POLL_ERR,                     /* I/O error.  */
 244 # define POLL_ERR       POLL_ERR
 245   POLL_PRI,                     /* High priority input available.  */
 246 # define POLL_PRI       POLL_PRI
 247   POLL_HUP                      /* Device disconnected.  */
 248 # define POLL_HUP       POLL_HUP
 249 };
 250
 251 # undef __need_siginfo_t
 252 #endif  /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
 253
 254
 255 #if (defined _SIGNAL_H || defined __need_sigevent_t) \
 256     && !defined __have_sigevent_t
 257 # define __have_sigevent_t      1
 258
 259 /* Structure to transport application-defined values with signals.  */
 260 # define __SIGEV_MAX_SIZE       64
 261 # define __SIGEV_PAD_SIZE       ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
 262
 263 typedef struct sigevent
 264   {
 265     sigval_t sigev_value;
 266     int sigev_signo;
 267     int sigev_notify;
 268
 269     union
 270       {
 271         int _pad[__SIGEV_PAD_SIZE];
 272
 273         /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
 274            thread to receive the signal.  */
 275         __pid_t _tid;
 276
 277         struct
 278           {
 279             void (*_function) (sigval_t);       /* Function to start.  */
 280             void *_attribute;                   /* Really pthread_attr_t.  */
 281           } _sigev_thread;
 282       } _sigev_un;
 283   } sigevent_t;
 284
 285 /* POSIX names to access some of the members.  */
 286 # define sigev_notify_function   _sigev_un._sigev_thread._function
 287 # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 288
 289 /* `sigev_notify' values.  */
 290 enum
 291 {
 292   SIGEV_SIGNAL = 0,             /* Notify via signal.  */
 293 # define SIGEV_SIGNAL   SIGEV_SIGNAL
 294   SIGEV_NONE,                   /* Other notification: meaningless.  */
 295 # define SIGEV_NONE     SIGEV_NONE
 296   SIGEV_THREAD,                 /* Deliver via thread creation.  */
 297 # define SIGEV_THREAD   SIGEV_THREAD
 298
 299   SIGEV_THREAD_ID = 4           /* Send signal to specific thread.  */
 300 #define SIGEV_THREAD_ID SIGEV_THREAD_ID
 301 };
 302
 303 #endif  /* have _SIGNAL_H.  */