bits/signum.h

   1 /* Copyright (C) 1991, 1993, 1996, 1998 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifdef  _SIGNAL_H
  19
  20 /* Fake signal functions.  */
  21
  22 #define SIG_ERR  ((__sighandler_t) -1)  /* Error return.  */
  23 #define SIG_DFL  ((__sighandler_t)  0)  /* Default action.  */
  24 #define SIG_IGN  ((__sighandler_t)  1)  /* Ignore signal.  */
  25
  26 #ifdef __USE_UNIX98
  27 # define SIG_HOLD ((__sighandler_t)  2) /* Add signal to hold mask.  */
  28 #endif
  29
  30 /* Signals in the 1-15 range are defined with their historical numbers.
  31    Signals in the 20-25 range are relatively new and have no ingrained
  32    numbers. */
  33
  34 /* ANSI signals.  */
  35 #define SIGINT  2       /* Interactive attention signal.  */
  36 #define SIGILL  4       /* Illegal instruction.  */
  37 #define SIGABRT 6       /* Abnormal termination.  */
  38 #define SIGFPE  8       /* Erroneous arithmetic operation.  */
  39 #define SIGSEGV 11      /* Invalid access to storage.  */
  40 #define SIGTERM 15      /* Termination request.  */
  41
  42 /* Historical signals specified by POSIX. */
  43 #define SIGHUP  1       /* Hangup.  */
  44 #define SIGQUIT 3       /* Quit.  */
  45 #define SIGKILL 9       /* Kill (cannot be blocked, caught, or ignored).  */
  46 #define SIGPIPE 13      /* Broken pipe.  */
  47 #define SIGALRM 14      /* Alarm clock.  */
  48
  49 /* New(er) POSIX signals. */
  50 #define SIGSTOP 20      /* Stop (cannot be blocked, caught, or ignored).  */
  51 #define SIGCONT 21      /* Continue.  */
  52 #define SIGTSTP 22      /* Keyboard stop.  */
  53 #define SIGTTIN 23      /* Background read from control terminal.  */
  54 #define SIGTTOU 24      /* Background write to control terminal.  */
  55 #define SIGCHLD 25      /* Child terminated or stopped.  */
  56
  57 #define _NSIG   26
  58
  59 /* Archaic names for compatibility. */
  60 #define SIGIOT  SIGABRT /* IOT instruction, abort() on a PDP11 */
  61 #define SIGCLD  SIGCHLD /* Old System V name */
  62
  63 #endif  /* <signal.h> included.  */