stdio-common/psignal.c

   1 /* Copyright (C) 1991, 1992, 1995, 1996 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 <stdio.h>
  20 #include <signal.h>
  21
  22
  23 #ifndef HAVE_GNU_LD
  24 #define _sys_siglist    sys_siglist
  25 #endif
  26
  27 /* Defined in sys_siglist.c.  */
  28 extern const char *const _sys_siglist[];
  29
  30
  31 /* Print out on stderr a line consisting of the test in S, a colon, a space,
  32    a message describing the meaning of the signal number SIG and a newline.
  33    If S is NULL or "", the colon and space are omitted.  */
  34 void
  35 psignal (int sig, const char *s)
  36 {
  37   const char *colon, *desc;
  38
  39   if (s == NULL || s == '\0')
  40     s = colon = "";
  41   else
  42     colon = ": ";
  43
  44   if (sig >= 0 && sig < NSIG && (desc = _sys_siglist[sig]) != NULL)
  45     (void) fprintf (stderr, "%s%s%s\n", s, colon, _(desc));
  46   else
  47     (void) fprintf (stderr, _("%s%sUnknown signal %d\n"), s, colon, sig);
  48 }