stdio/psignal.c

   1 /* Copyright (C) 1991, 1992 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 Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 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 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <stdio.h>
  21 #include <signal.h>
  22
  23
  24 #ifndef HAVE_GNU_LD
  25 #define _sys_siglist    sys_siglist
  26 #endif
  27
  28 /* Defined in sys_siglist.c.  */
  29 extern CONST char *CONST _sys_siglist[];
  30
  31
  32 /* Print out on stderr a line consisting of the test in S, a colon, a space,
  33    a message describing the meaning of the signal number SIG and a newline.
  34    If S is NULL or "", the colon and space are omitted.  */
  35 void
  36 DEFUN(psignal, (sig, s), int sig AND register CONST char *s)
  37 {
  38   CONST char *colon;
  39
  40   if (s == NULL || s == '\0')
  41     s = colon = "";
  42   else
  43     colon = ": ";
  44
  45   if (sig >= 0 && sig < NSIG)
  46     (void) fprintf(stderr, "%s%s%s\n", s, colon, _sys_siglist[sig]);
  47   else
  48     (void) fprintf(stderr, "%s%sUnknown signal %d\n", s, colon, sig);
  49 }