file check w/ threads

check.c

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>

#define NUM_THREADS     5
#define MAXPATHSIZE		1024
#define MAXFILENAMESIZE	MAXPATHSIZE + 32

struct _filedata {
	long tid;
	char path[MAXPATHSIZE];
};

void *create_remove_file(void *_fdata) {
	FILE *fp;
	unsigned char fname[MAXFILENAMESIZE];
	unsigned char buf[256];
	
	struct _filedata *fd = (struct _filedata *) _fdata;

	sprintf(fname, "%s/%s", fd->path, "temp_fname");

	fp = fopen(fname, "wb+");
   	fprintf(fp, "tstamp + thread id #%ld!\n", fd->tid);
	fclose(fp);

	fp = fopen(fname, "rb+");
   	fread(buf, sizeof(buf), 1, fp);
	fclose(fp);

	
	unlink(fname);
   	pthread_exit(NULL);
}

int _dir_exists(char *path) {
	struct stat st;
	int i = 0;
	fprintf(stderr, "\tchecking: %s", path);
	i = stat(path, &st);
	if (i == -1) { fprintf(stderr, " dont exist (%d)\n", i); }
	else { fprintf(stderr, " exists (%d)", i); }
	return i;
}

int main (int argc, char *argv[]) {

   	long t = 0;
	char **mp = argv;
	char *c = NULL;
	
	if (argc < 2) {
		fprintf(stderr, "usage %s <path> <path> .... <path>\n", argv[0]);
		exit(-1);
	}
	mp++;
	fprintf(stderr, "Check enabled on:\n");
	for (c; (c = *(mp)) != NULL; mp++) {
		if (_dir_exists(c) > -1 ) {
			pthread_t pt;
			int r;
			struct _filedata fd;
			fd.tid = t;
			strcmp(fd.path, c);
			r = pthread_create(&pt, NULL, create_remove_file, (void *) &fd);
			fprintf(stderr, " thread created\n");
			if (r) {
	         	fprintf(stderr, "ERROR: return code from pthread_create() is %d\n", r);
	         	exit(-1);
	      	}
			t++;
		} 
	}
	
   	pthread_exit(NULL);
}