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/*
* Copyright (C) 2016 Renzo Davoli, University of Bologna
*
* openclosepidfile
*
* VDE 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, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <unistd.h>
#include <openclosepidfile.h>
void openclosepidfile(char *pidfile) {
static char *savepidfile;
if (pidfile != NULL) {
FILE *f = fopen(pidfile,"w");
if (f != NULL) {
savepidfile = pidfile;
fprintf(f,"%d\n", getpid());
fclose(f);
}
} else if (savepidfile != NULL)
unlink(savepidfile);
}
void openclosepgrpfile(char *pidfile) {
static char *savepidfile;
if (pidfile != NULL) {
FILE *f = fopen(pidfile,"w");
if (f != NULL) {
savepidfile = pidfile;
fprintf(f,"-%d\n", getpgrp());
fclose(f);
}
} else if (savepidfile != NULL)
unlink(savepidfile);
}
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