sysdeps/unix/sysv/linux/x86/bits/siginfo.h

   1 /* siginfo_t, sigevent and constants.  Linux x86-64 version.
   2    Copyright (C) 2012-2014 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #if !defined _SIGNAL_H && !defined __need_siginfo_t \
  20     && !defined __need_sigevent_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_sigval_t \
  27      && (defined _SIGNAL_H || defined __need_siginfo_t \
  28          || defined __need_sigevent_t))
  29 # define __have_sigval_t        1
  30
  31 /* Type for data associated with a signal.  */
  32 typedef union sigval
  33   {
  34     int sival_int;
  35     void *sival_ptr;
  36   } sigval_t;
  37 #endif
  38
  39 #if (!defined __have_siginfo_t \
  40      && (defined _SIGNAL_H || defined __need_siginfo_t))
  41 # define __have_siginfo_t       1
  42
  43 # define __SI_MAX_SIZE     128
  44 # if __WORDSIZE == 64
  45 #  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 4)
  46 # else
  47 #  define __SI_PAD_SIZE     ((__SI_MAX_SIZE / sizeof (int)) - 3)
  48 # endif
  49
  50 # if defined __x86_64__ && __WORDSIZE == 32
  51 /* si_utime and si_stime must be 4 byte aligned for x32 to match the
  52    kernel.  We align siginfo_t to 8 bytes so that si_utime and si_stime
  53    are actually aligned to 8 bytes since their offsets are multiple of
  54    8 bytes.  */
  55 typedef __clock_t __attribute__ ((__aligned__ (4))) __sigchld_clock_t;
  56 #  define __SI_ALIGNMENT __attribute__ ((__aligned__ (8)))
  57 # else
  58 typedef __clock_t __sigchld_clock_t;
  59 #  define __SI_ALIGNMENT
  60 # endif
  61
  62 typedef struct
  63   {
  64     int si_signo;               /* Signal number.  */
  65     int si_errno;               /* If non-zero, an errno value associated with
  66                                    this signal, as defined in <errno.h>.  */
  67     int si_code;                /* Signal code.  */
  68
  69     union
  70       {
  71         int _pad[__SI_PAD_SIZE];
  72
  73          /* kill().  */
  74         struct
  75           {
  76             __pid_t si_pid;     /* Sending process ID.  */
  77             __uid_t si_uid;     /* Real user ID of sending process.  */
  78           } _kill;
  79
  80         /* POSIX.1b timers.  */
  81         struct
  82           {
  83             int si_tid;         /* Timer ID.  */
  84             int si_overrun;     /* Overrun count.  */
  85             sigval_t si_sigval; /* Signal value.  */
  86           } _timer;
  87
  88         /* POSIX.1b signals.  */
  89         struct
  90           {
  91             __pid_t si_pid;     /* Sending process ID.  */
  92             __uid_t si_uid;     /* Real user ID of sending process.  */
  93             sigval_t si_sigval; /* Signal value.  */
  94           } _rt;
  95
  96         /* SIGCHLD.  */
  97         struct
  98           {
  99             __pid_t si_pid;     /* Which child.  */
 100             __uid_t si_uid;     /* Real user ID of sending process.  */
 101             int si_status;      /* Exit value or signal.  */
 102             __sigchld_clock_t si_utime;
 103             __sigchld_clock_t si_stime;
 104           } _sigchld;
 105
 106         /* SIGILL, SIGFPE, SIGSEGV, SIGBUS.  */
 107         struct
 108           {
 109             void *si_addr;      /* Faulting insn/memory ref.  */
 110             short int si_addr_lsb;      /* Valid LSB of the reported address.  */
 111           } _sigfault;
 112
 113         /* SIGPOLL.  */
 114         struct
 115           {
 116             long int si_band;   /* Band event for SIGPOLL.  */
 117             int si_fd;
 118           } _sigpoll;
 119
 120         /* SIGSYS.  */
 121         struct
 122           {
 123             void *_call_addr;   /* Calling user insn.  */
 124             int _syscall;       /* Triggering system call number.  */
 125             unsigned int _arch; /* AUDIT_ARCH_* of syscall.  */
 126           } _sigsys;
 127       } _sifields;
 128   } siginfo_t __SI_ALIGNMENT;
 129
 130
 131 /* X/Open requires some more fields with fixed names.  */
 132 # define si_pid         _sifields._kill.si_pid
 133 # define si_uid         _sifields._kill.si_uid
 134 # define si_timerid     _sifields._timer.si_tid
 135 # define si_overrun     _sifields._timer.si_overrun
 136 # define si_status      _sifields._sigchld.si_status
 137 # define si_utime       _sifields._sigchld.si_utime
 138 # define si_stime       _sifields._sigchld.si_stime
 139 # define si_value       _sifields._rt.si_sigval
 140 # define si_int         _sifields._rt.si_sigval.sival_int
 141 # define si_ptr         _sifields._rt.si_sigval.sival_ptr
 142 # define si_addr        _sifields._sigfault.si_addr
 143 # define si_addr_lsb    _sifields._sigfault.si_addr_lsb
 144 # define si_band        _sifields._sigpoll.si_band
 145 # define si_fd          _sifields._sigpoll.si_fd
 146 # define si_call_addr   _sifields._sigsys._call_addr
 147 # define si_syscall     _sifields._sigsys._syscall
 148 # define si_arch        _sifields._sigsys._arch
 149
 150
 151 /* Values for `si_code'.  Positive values are reserved for kernel-generated
 152    signals.  */
 153 enum
 154 {
 155   SI_ASYNCNL = -60,             /* Sent by asynch name lookup completion.  */
 156 # define SI_ASYNCNL     SI_ASYNCNL
 157   SI_TKILL = -6,                /* Sent by tkill.  */
 158 # define SI_TKILL       SI_TKILL
 159   SI_SIGIO,                     /* Sent by queued SIGIO. */
 160 # define SI_SIGIO       SI_SIGIO
 161   SI_ASYNCIO,                   /* Sent by AIO completion.  */
 162 # define SI_ASYNCIO     SI_ASYNCIO
 163   SI_MESGQ,                     /* Sent by real time mesq state change.  */
 164 # define SI_MESGQ       SI_MESGQ
 165   SI_TIMER,                     /* Sent by timer expiration.  */
 166 # define SI_TIMER       SI_TIMER
 167   SI_QUEUE,                     /* Sent by sigqueue.  */
 168 # define SI_QUEUE       SI_QUEUE
 169   SI_USER,                      /* Sent by kill, sigsend.  */
 170 # define SI_USER        SI_USER
 171   SI_KERNEL = 0x80              /* Send by kernel.  */
 172 #define SI_KERNEL       SI_KERNEL
 173 };
 174
 175
 176 /* `si_code' values for SIGILL signal.  */
 177 enum
 178 {
 179   ILL_ILLOPC = 1,               /* Illegal opcode.  */
 180 # define ILL_ILLOPC     ILL_ILLOPC
 181   ILL_ILLOPN,                   /* Illegal operand.  */
 182 # define ILL_ILLOPN     ILL_ILLOPN
 183   ILL_ILLADR,                   /* Illegal addressing mode.  */
 184 # define ILL_ILLADR     ILL_ILLADR
 185   ILL_ILLTRP,                   /* Illegal trap. */
 186 # define ILL_ILLTRP     ILL_ILLTRP
 187   ILL_PRVOPC,                   /* Privileged opcode.  */
 188 # define ILL_PRVOPC     ILL_PRVOPC
 189   ILL_PRVREG,                   /* Privileged register.  */
 190 # define ILL_PRVREG     ILL_PRVREG
 191   ILL_COPROC,                   /* Coprocessor error.  */
 192 # define ILL_COPROC     ILL_COPROC
 193   ILL_BADSTK                    /* Internal stack error.  */
 194 # define ILL_BADSTK     ILL_BADSTK
 195 };
 196
 197 /* `si_code' values for SIGFPE signal.  */
 198 enum
 199 {
 200   FPE_INTDIV = 1,               /* Integer divide by zero.  */
 201 # define FPE_INTDIV     FPE_INTDIV
 202   FPE_INTOVF,                   /* Integer overflow.  */
 203 # define FPE_INTOVF     FPE_INTOVF
 204   FPE_FLTDIV,                   /* Floating point divide by zero.  */
 205 # define FPE_FLTDIV     FPE_FLTDIV
 206   FPE_FLTOVF,                   /* Floating point overflow.  */
 207 # define FPE_FLTOVF     FPE_FLTOVF
 208   FPE_FLTUND,                   /* Floating point underflow.  */
 209 # define FPE_FLTUND     FPE_FLTUND
 210   FPE_FLTRES,                   /* Floating point inexact result.  */
 211 # define FPE_FLTRES     FPE_FLTRES
 212   FPE_FLTINV,                   /* Floating point invalid operation.  */
 213 # define FPE_FLTINV     FPE_FLTINV
 214   FPE_FLTSUB                    /* Subscript out of range.  */
 215 # define FPE_FLTSUB     FPE_FLTSUB
 216 };
 217
 218 /* `si_code' values for SIGSEGV signal.  */
 219 enum
 220 {
 221   SEGV_MAPERR = 1,              /* Address not mapped to object.  */
 222 # define SEGV_MAPERR    SEGV_MAPERR
 223   SEGV_ACCERR                   /* Invalid permissions for mapped object.  */
 224 # define SEGV_ACCERR    SEGV_ACCERR
 225 };
 226
 227 /* `si_code' values for SIGBUS signal.  */
 228 enum
 229 {
 230   BUS_ADRALN = 1,               /* Invalid address alignment.  */
 231 # define BUS_ADRALN     BUS_ADRALN
 232   BUS_ADRERR,                   /* Non-existant physical address.  */
 233 # define BUS_ADRERR     BUS_ADRERR
 234   BUS_OBJERR,                   /* Object specific hardware error.  */
 235 # define BUS_OBJERR     BUS_OBJERR
 236   BUS_MCEERR_AR,                /* Hardware memory error: action required.  */
 237 # define BUS_MCEERR_AR  BUS_MCEERR_AR
 238   BUS_MCEERR_AO                 /* Hardware memory error: action optional.  */
 239 # define BUS_MCEERR_AO  BUS_MCEERR_AO
 240 };
 241
 242 /* `si_code' values for SIGTRAP signal.  */
 243 enum
 244 {
 245   TRAP_BRKPT = 1,               /* Process breakpoint.  */
 246 # define TRAP_BRKPT     TRAP_BRKPT
 247   TRAP_TRACE                    /* Process trace trap.  */
 248 # define TRAP_TRACE     TRAP_TRACE
 249 };
 250
 251 /* `si_code' values for SIGCHLD signal.  */
 252 enum
 253 {
 254   CLD_EXITED = 1,               /* Child has exited.  */
 255 # define CLD_EXITED     CLD_EXITED
 256   CLD_KILLED,                   /* Child was killed.  */
 257 # define CLD_KILLED     CLD_KILLED
 258   CLD_DUMPED,                   /* Child terminated abnormally.  */
 259 # define CLD_DUMPED     CLD_DUMPED
 260   CLD_TRAPPED,                  /* Traced child has trapped.  */
 261 # define CLD_TRAPPED    CLD_TRAPPED
 262   CLD_STOPPED,                  /* Child has stopped.  */
 263 # define CLD_STOPPED    CLD_STOPPED
 264   CLD_CONTINUED                 /* Stopped child has continued.  */
 265 # define CLD_CONTINUED  CLD_CONTINUED
 266 };
 267
 268 /* `si_code' values for SIGPOLL signal.  */
 269 enum
 270 {
 271   POLL_IN = 1,                  /* Data input available.  */
 272 # define POLL_IN        POLL_IN
 273   POLL_OUT,                     /* Output buffers available.  */
 274 # define POLL_OUT       POLL_OUT
 275   POLL_MSG,                     /* Input message available.   */
 276 # define POLL_MSG       POLL_MSG
 277   POLL_ERR,                     /* I/O error.  */
 278 # define POLL_ERR       POLL_ERR
 279   POLL_PRI,                     /* High priority input available.  */
 280 # define POLL_PRI       POLL_PRI
 281   POLL_HUP                      /* Device disconnected.  */
 282 # define POLL_HUP       POLL_HUP
 283 };
 284
 285 # undef __need_siginfo_t
 286 #endif  /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
 287
 288
 289 #if (defined _SIGNAL_H || defined __need_sigevent_t) \
 290     && !defined __have_sigevent_t
 291 # define __have_sigevent_t      1
 292
 293 /* Structure to transport application-defined values with signals.  */
 294 # define __SIGEV_MAX_SIZE       64
 295 # if __WORDSIZE == 64
 296 #  define __SIGEV_PAD_SIZE      ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
 297 # else
 298 #  define __SIGEV_PAD_SIZE      ((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
 299 # endif
 300
 301 /* Forward declaration.  */
 302 # ifndef __have_pthread_attr_t
 303 typedef union pthread_attr_t pthread_attr_t;
 304 #  define __have_pthread_attr_t 1
 305 # endif
 306
 307 typedef struct sigevent
 308   {
 309     sigval_t sigev_value;
 310     int sigev_signo;
 311     int sigev_notify;
 312
 313     union
 314       {
 315         int _pad[__SIGEV_PAD_SIZE];
 316
 317         /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
 318            thread to receive the signal.  */
 319         __pid_t _tid;
 320
 321         struct
 322           {
 323             void (*_function) (sigval_t);       /* Function to start.  */
 324             pthread_attr_t *_attribute;         /* Thread attributes.  */
 325           } _sigev_thread;
 326       } _sigev_un;
 327   } sigevent_t;
 328
 329 /* POSIX names to access some of the members.  */
 330 # define sigev_notify_function   _sigev_un._sigev_thread._function
 331 # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 332
 333 /* `sigev_notify' values.  */
 334 enum
 335 {
 336   SIGEV_SIGNAL = 0,             /* Notify via signal.  */
 337 # define SIGEV_SIGNAL   SIGEV_SIGNAL
 338   SIGEV_NONE,                   /* Other notification: meaningless.  */
 339 # define SIGEV_NONE     SIGEV_NONE
 340   SIGEV_THREAD,                 /* Deliver via thread creation.  */
 341 # define SIGEV_THREAD   SIGEV_THREAD
 342
 343   SIGEV_THREAD_ID = 4           /* Send signal to specific thread.  */
 344 #define SIGEV_THREAD_ID SIGEV_THREAD_ID
 345 };
 346
 347 #endif  /* have _SIGNAL_H.  */