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/* Error logging facilities.
Copyright 1996, 1997 Linux International.
Contributed by Richard Henderson <rth@tamu.edu>
This file is part of the Linux modutils.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ident "$Id: logger.c 1.2 Sat, 25 Dec 1999 14:38:26 +1100 keith $"
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <errno.h>
#include <syslog.h>
#include "util.h"
/*======================================================================*/
int log;
static int silent;
int errors;
const char *error_file;
const char *program_name;
#define STOREMSG
#ifdef STOREMSG
struct cbuf {
struct cbuf *next;
int type;
char *msg;
} *head, *tail;
static void savemsg(int type, char *msg)
{
struct cbuf *me = (struct cbuf *)xmalloc(sizeof(struct cbuf));
char *s = xstrdup(msg);
me->next = NULL;
me->type = type;
me->msg = s;
if (tail)
tail->next = me;
else
head = me;
tail = me;
}
static void dumpmsg(void)
{
for (;head; head = head->next)
syslog(head->type, "%s", head->msg);
}
#endif /* STOREMSG */
void error(const char *fmt,...)
{
va_list args;
if (silent)
;
else if (log) {
char buf[1024];
int n;
if (error_file)
n = snprintf(buf, sizeof(buf), "%s: ", error_file);
else
n = 0;
va_start(args, fmt);
vsnprintf(buf + n, sizeof(buf) - n, fmt, args);
va_end(args);
#ifdef STOREMSG
savemsg(LOG_ERR, buf);
#else
syslog(LOG_ERR, "%s", buf);
#endif
} else {
if (error_file)
fprintf(stderr, "%s: ", error_file);
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
putc('\n', stderr);
}
errors++;
}
void lprintf(const char *fmt,...)
{
va_list args;
if (silent);
else if (log) {
char buf[1024];
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
#ifdef STOREMSG
savemsg(LOG_INFO, buf);
#else
syslog(LOG_INFO, "%s", buf);
#endif
} else {
va_start(args, fmt);
vfprintf(stdout, fmt, args);
va_end(args);
putchar('\n');
}
}
void setsyslog(const char *program)
{
openlog(program, LOG_CONS, LOG_DAEMON);
#ifdef STOREMSG
atexit(dumpmsg);
#endif
log = 1;
}
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