mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 02:50:09 +00:00
144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/* error.c -- error handler for noninteractive utilities
|
|
Copyright (C) 1990, 91, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU C Library. Its master source is NOT part of
|
|
the C library, however. The master source lives in /gd/gnu/lib.
|
|
|
|
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. */
|
|
|
|
/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
|
|
#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
|
|
# if __STDC__
|
|
# include <stdarg.h>
|
|
# define VA_START(args, lastarg) va_start(args, lastarg)
|
|
# else
|
|
# include <varargs.h>
|
|
# define VA_START(args, lastarg) va_start(args)
|
|
# endif
|
|
#else
|
|
# define va_alist a1, a2, a3, a4, a5, a6, a7, a8
|
|
# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
|
|
#endif
|
|
|
|
#if STDC_HEADERS || _LIBC
|
|
# include <stdlib.h>
|
|
# include <string.h>
|
|
#else
|
|
void exit ();
|
|
#endif
|
|
|
|
/* If NULL, error will flush stdout, then print on stderr the program
|
|
name, a colon and a space. Otherwise, error will call this
|
|
function without parameters instead. */
|
|
void (*error_print_progname) (
|
|
#if __STDC__
|
|
void
|
|
#endif
|
|
);
|
|
|
|
/* This variable is incremented each time `error' is called. */
|
|
unsigned int error_message_count;
|
|
|
|
#ifdef _LIBC
|
|
/* In the GNU C library, there is a predefined variable for this. */
|
|
|
|
#define program_name program_invocation_name
|
|
#include <errno.h>
|
|
|
|
#else
|
|
|
|
/* The calling program should define program_name and set it to the
|
|
name of the executing program. */
|
|
extern char *program_name;
|
|
|
|
#if HAVE_STRERROR
|
|
# ifndef strerror /* On some systems, strerror is a macro */
|
|
char *strerror ();
|
|
# endif
|
|
#else
|
|
static char *
|
|
private_strerror (errnum)
|
|
int errnum;
|
|
{
|
|
extern char *sys_errlist[];
|
|
extern int sys_nerr;
|
|
|
|
if (errnum > 0 && errnum <= sys_nerr)
|
|
return sys_errlist[errnum];
|
|
return "Unknown system error";
|
|
}
|
|
#define strerror private_strerror
|
|
#endif /* HAVE_STRERROR */
|
|
#endif /* _LIBC */
|
|
|
|
/* Print the program name and error message MESSAGE, which is a printf-style
|
|
format string with optional args.
|
|
If ERRNUM is nonzero, print its corresponding system error message.
|
|
Exit with status STATUS if it is nonzero. */
|
|
/* VARARGS */
|
|
|
|
void
|
|
#if defined(VA_START) && __STDC__
|
|
error (int status, int errnum, const char *message, ...)
|
|
#else
|
|
error (status, errnum, message, va_alist)
|
|
int status;
|
|
int errnum;
|
|
char *message;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
#ifdef VA_START
|
|
va_list args;
|
|
#endif
|
|
|
|
if (error_print_progname)
|
|
(*error_print_progname) ();
|
|
else
|
|
{
|
|
fflush (stdout);
|
|
fprintf (stderr, "%s: ", program_name);
|
|
}
|
|
|
|
#ifdef VA_START
|
|
VA_START (args, message);
|
|
# if HAVE_VPRINTF || _LIBC
|
|
vfprintf (stderr, message, args);
|
|
# else
|
|
_doprnt (message, args, stderr);
|
|
# endif
|
|
va_end (args);
|
|
#else
|
|
fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
|
|
#endif
|
|
|
|
++error_message_count;
|
|
|
|
if (errnum)
|
|
fprintf (stderr, ": %s", strerror (errnum));
|
|
putc ('\n', stderr);
|
|
fflush (stderr);
|
|
if (status)
|
|
exit (status);
|
|
}
|