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/*
* part of ethersrv-linux
* http://etherdfs.sourceforge.net
*
* Copyright (C) 2017 Mateusz Viste
*/
#include <stdio.h>
#include <unistd.h>
#include "lock.h"
/* acquire the lock file */
int lockme(char *lockfile) {
FILE *fd;
/* does the file exist? */
fd = fopen(lockfile, "rb");
if (fd != NULL) {
fclose(fd);
return(-1);
}
/* file doesn't seem to exist - create it then */
fd = fopen(lockfile, "wb");
if (fd == NULL) return(-1);
fclose(fd);
return(0);
}
/* release the lock file */
void unlockme(char *lockfile) {
unlink(lockfile);
}
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