stdio-common/psignal.c

   1 /* Copyright (C) 1991, 1992, 1995, 1996, 1997 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 not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <stdio.h>
  20 #include <signal.h>
  21 #include <libintl.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 psignal (int sig, const char *s)
  37 {
  38   const char *colon, *desc;
  39
  40   if (s == NULL || s == '\0')
  41     s = colon = "";
  42   else
  43     colon = ": ";
  44
  45   if (sig >= 0 && sig < NSIG && (desc = _sys_siglist[sig]) != NULL)
  46     (void) fprintf (stderr, "%s%s%s\n", s, colon, _(desc));
  47   else
  48     (void) fprintf (stderr, _("%s%sUnknown signal %d\n"), s, colon, sig);
  49 }