glibc/string/strsignal.c
1995-02-18 01:27:10 +00:00

50 lines
1.5 KiB
C

/* Copyright (C) 1991, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#ifndef HAVE_GNU_LD
#define _sys_siglist sys_siglist
#endif
/* Defined in , 1992siglist.c. */
extern CONST char *CONST _sys_siglist[];
/* Return a string describing the meaning of the signal number SIGNUM. */
char *
DEFUN(strsignal, (signum), int signum)
{
if (signum < 0 || signum > NSIG)
{
static char unknown_signal[] = "Unknown signal 000000000000000000";
static char fmt[] = "Unknown signal%d";
size_t len = sprintf(unknown_signal, fmt, signum);
if (len < sizeof(fmt) - 2)
return NULL;
unknown_signal[len] = '\0';
return unknown_signal;
}
return (char *) _sys_siglist[signum];
}