utils.c revision 181368a3b26329f77a93b06a5d2b285d4bf5f8e3
/*
* Modem mode switcher
*
* Copyright (C) 2009 Dan Williams <dcbw@redhat.com>
*
* 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:
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include "utils.h"
static int debug_on = 0;
static int quiet = 0;
FILE *logfile = NULL;
void
do_log (int level, const char *fmt, ...)
{
va_list args;
char buffer[1024];
char tag = 'L';
if (level >= LOG_DBG && !debug_on)
return;
va_start (args, fmt);
vsnprintf (buffer, sizeof (buffer), fmt, args);
va_end (args);
if (level == LOG_ERR)
tag = 'E';
else if (level == LOG_MSG)
tag = 'L';
else if (level == LOG_DBG)
tag = 'D';
if (logfile)
fprintf (logfile, "%c: %s\n", tag, buffer);
if (!quiet)
fprintf ((level == LOG_ERR) ? stderr : stdout, "%c: %s\n", tag, buffer);
}
int
log_startup (const char *path, int do_debug, int be_quiet)
{
time_t t;
quiet = be_quiet;
debug_on = do_debug;
if (!path)
return 0;
logfile = fopen (path, "a+");
if (!logfile)
return 1;
t = time (NULL);
message ("\n**** Started: %s\n", ctime (&t));
return 0;
}
void
log_shutdown (void)
{
if (logfile)
fclose (logfile);
}