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

   1 /* siginfo_t, sigevent and constants.  Linux x86-64 version.
   2    Copyright (C) 2012-2015 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 # if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
 177 /* `si_code' values for SIGILL signal.  */
 178 enum
 179 {
 180   ILL_ILLOPC = 1,               /* Illegal opcode.  */
 181 #  define ILL_ILLOPC    ILL_ILLOPC
 182   ILL_ILLOPN,                   /* Illegal operand.  */
 183 #  define ILL_ILLOPN    ILL_ILLOPN
 184   ILL_ILLADR,                   /* Illegal addressing mode.  */
 185 #  define ILL_ILLADR    ILL_ILLADR
 186   ILL_ILLTRP,                   /* Illegal trap. */
 187 #  define ILL_ILLTRP    ILL_ILLTRP
 188   ILL_PRVOPC,                   /* Privileged opcode.  */
 189 #  define ILL_PRVOPC    ILL_PRVOPC
 190   ILL_PRVREG,                   /* Privileged register.  */
 191 #  define ILL_PRVREG    ILL_PRVREG
 192   ILL_COPROC,                   /* Coprocessor error.  */
 193 #  define ILL_COPROC    ILL_COPROC
 194   ILL_BADSTK                    /* Internal stack error.  */
 195 #  define ILL_BADSTK    ILL_BADSTK
 196 };
 197
 198 /* `si_code' values for SIGFPE signal.  */
 199 enum
 200 {
 201   FPE_INTDIV = 1,               /* Integer divide by zero.  */
 202 #  define FPE_INTDIV    FPE_INTDIV
 203   FPE_INTOVF,                   /* Integer overflow.  */
 204 #  define FPE_INTOVF    FPE_INTOVF
 205   FPE_FLTDIV,                   /* Floating point divide by zero.  */
 206 #  define FPE_FLTDIV    FPE_FLTDIV
 207   FPE_FLTOVF,                   /* Floating point overflow.  */
 208 #  define FPE_FLTOVF    FPE_FLTOVF
 209   FPE_FLTUND,                   /* Floating point underflow.  */
 210 #  define FPE_FLTUND    FPE_FLTUND
 211   FPE_FLTRES,                   /* Floating point inexact result.  */
 212 #  define FPE_FLTRES    FPE_FLTRES
 213   FPE_FLTINV,                   /* Floating point invalid operation.  */
 214 #  define FPE_FLTINV    FPE_FLTINV
 215   FPE_FLTSUB                    /* Subscript out of range.  */
 216 #  define FPE_FLTSUB    FPE_FLTSUB
 217 };
 218
 219 /* `si_code' values for SIGSEGV signal.  */
 220 enum
 221 {
 222   SEGV_MAPERR = 1,              /* Address not mapped to object.  */
 223 #  define SEGV_MAPERR   SEGV_MAPERR
 224   SEGV_ACCERR                   /* Invalid permissions for mapped object.  */
 225 #  define SEGV_ACCERR   SEGV_ACCERR
 226 };
 227
 228 /* `si_code' values for SIGBUS signal.  */
 229 enum
 230 {
 231   BUS_ADRALN = 1,               /* Invalid address alignment.  */
 232 #  define BUS_ADRALN    BUS_ADRALN
 233   BUS_ADRERR,                   /* Non-existant physical address.  */
 234 #  define BUS_ADRERR    BUS_ADRERR
 235   BUS_OBJERR,                   /* Object specific hardware error.  */
 236 #  define BUS_OBJERR    BUS_OBJERR
 237   BUS_MCEERR_AR,                /* Hardware memory error: action required.  */
 238 #  define BUS_MCEERR_AR BUS_MCEERR_AR
 239   BUS_MCEERR_AO                 /* Hardware memory error: action optional.  */
 240 #  define BUS_MCEERR_AO BUS_MCEERR_AO
 241 };
 242 # endif
 243
 244 # ifdef __USE_XOPEN_EXTENDED
 245 /* `si_code' values for SIGTRAP signal.  */
 246 enum
 247 {
 248   TRAP_BRKPT = 1,               /* Process breakpoint.  */
 249 #  define TRAP_BRKPT    TRAP_BRKPT
 250   TRAP_TRACE                    /* Process trace trap.  */
 251 #  define TRAP_TRACE    TRAP_TRACE
 252 };
 253 # endif
 254
 255 # if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
 256 /* `si_code' values for SIGCHLD signal.  */
 257 enum
 258 {
 259   CLD_EXITED = 1,               /* Child has exited.  */
 260 #  define CLD_EXITED    CLD_EXITED
 261   CLD_KILLED,                   /* Child was killed.  */
 262 #  define CLD_KILLED    CLD_KILLED
 263   CLD_DUMPED,                   /* Child terminated abnormally.  */
 264 #  define CLD_DUMPED    CLD_DUMPED
 265   CLD_TRAPPED,                  /* Traced child has trapped.  */
 266 #  define CLD_TRAPPED   CLD_TRAPPED
 267   CLD_STOPPED,                  /* Child has stopped.  */
 268 #  define CLD_STOPPED   CLD_STOPPED
 269   CLD_CONTINUED                 /* Stopped child has continued.  */
 270 #  define CLD_CONTINUED CLD_CONTINUED
 271 };
 272
 273 /* `si_code' values for SIGPOLL signal.  */
 274 enum
 275 {
 276   POLL_IN = 1,                  /* Data input available.  */
 277 #  define POLL_IN       POLL_IN
 278   POLL_OUT,                     /* Output buffers available.  */
 279 #  define POLL_OUT      POLL_OUT
 280   POLL_MSG,                     /* Input message available.   */
 281 #  define POLL_MSG      POLL_MSG
 282   POLL_ERR,                     /* I/O error.  */
 283 #  define POLL_ERR      POLL_ERR
 284   POLL_PRI,                     /* High priority input available.  */
 285 #  define POLL_PRI      POLL_PRI
 286   POLL_HUP                      /* Device disconnected.  */
 287 #  define POLL_HUP      POLL_HUP
 288 };
 289 # endif
 290
 291 # undef __need_siginfo_t
 292 #endif  /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t).  */
 293
 294
 295 #if (defined _SIGNAL_H || defined __need_sigevent_t) \
 296     && !defined __have_sigevent_t
 297 # define __have_sigevent_t      1
 298
 299 /* Structure to transport application-defined values with signals.  */
 300 # define __SIGEV_MAX_SIZE       64
 301 # if __WORDSIZE == 64
 302 #  define __SIGEV_PAD_SIZE      ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
 303 # else
 304 #  define __SIGEV_PAD_SIZE      ((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
 305 # endif
 306
 307 /* Forward declaration.  */
 308 # ifndef __have_pthread_attr_t
 309 typedef union pthread_attr_t pthread_attr_t;
 310 #  define __have_pthread_attr_t 1
 311 # endif
 312
 313 typedef struct sigevent
 314   {
 315     sigval_t sigev_value;
 316     int sigev_signo;
 317     int sigev_notify;
 318
 319     union
 320       {
 321         int _pad[__SIGEV_PAD_SIZE];
 322
 323         /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
 324            thread to receive the signal.  */
 325         __pid_t _tid;
 326
 327         struct
 328           {
 329             void (*_function) (sigval_t);       /* Function to start.  */
 330             pthread_attr_t *_attribute;         /* Thread attributes.  */
 331           } _sigev_thread;
 332       } _sigev_un;
 333   } sigevent_t;
 334
 335 /* POSIX names to access some of the members.  */
 336 # define sigev_notify_function   _sigev_un._sigev_thread._function
 337 # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
 338
 339 /* `sigev_notify' values.  */
 340 enum
 341 {
 342   SIGEV_SIGNAL = 0,             /* Notify via signal.  */
 343 # define SIGEV_SIGNAL   SIGEV_SIGNAL
 344   SIGEV_NONE,                   /* Other notification: meaningless.  */
 345 # define SIGEV_NONE     SIGEV_NONE
 346   SIGEV_THREAD,                 /* Deliver via thread creation.  */
 347 # define SIGEV_THREAD   SIGEV_THREAD
 348
 349   SIGEV_THREAD_ID = 4           /* Send signal to specific thread.  */
 350 #define SIGEV_THREAD_ID SIGEV_THREAD_ID
 351 };
 352
 353 #endif  /* have _SIGNAL_H.  */