daemon.c
/* testing daemon
*
* config-edit Copyright (C) 2008-2015 by Bruce Korb - all rights reserved
*
* config-edit 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 3 of the License, or
* (at your option) any later version.
*
* config-edit 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, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include "daemon-opts.h"
int reset = 0;
static void
handle_sighup(int sig)
{
static char const * fake_av[2] = { "daemon", NULL };
optionRestore(&daemonOptions);
/*
* We use a fake arg vector because we've already saved the initial
* options into our config file. Someone has changed that config file,
* so we do not want to reprocess command line options.
*/
(void)optionProcess(&daemonOptions, 1, (char **)fake_av);
reset = 1;
}
int
main(int argc, char ** argv)
{
optionSaveState(&daemonOptions);
(void)optionProcess(&daemonOptions, argc, argv);
/*
* Save the resulting state. The command line options are augment
* the current config and are saved for future reference.
*/
if (argc > 1)
optionSaveFile(&daemonOptions);
(void)signal(SIGHUP, handle_sighup);
{
FILE * fp = fopen("daemon.pid", "w");
if (fp != NULL) {
fprintf(fp, "%d\n", getpid());
fclose(fp);
}
}
for (;;) {
printf("text: %-70s\r", OPT_ARG(TEXT));
fflush(stdout);
sleep(10);
if (reset) {
fputc('\n', stdout);
reset = 0;
}
}
}