/* random-del-create.c (GPL)*/
/* Hironobu SUZUKI <hironobu@h2np.net> */
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <stdlib.h>
#define FAIL 0
#define SUCCESS 1
int openlog[2] = { 0, 0 };
#define MAXNUM 0x100000
#define MAXERROR 1024
extern int box_muler(int, int);
extern void create_or_delete(char *);
int cfilecount = 0;
int dfilecount = 0;
int errorcount = 0;
int main(int ac, char **av)
{
int r;
char fname[1024];
time_t t;
int i;
int m;
if (ac != 2) {
printf("%s hex-style-filename \n", av[0]);
printf("ex) %s 00022300\n", av[0]);
exit(1);
}
sscanf(av[1], "%x", &m);
if (m < 1 || m > MAXNUM) {
printf("out of size %d\n", m);
exit(1);
}
time(&t);
srandom((unsigned int)getpid() ^
(((unsigned int)t << 16) | (unsigned int)t >> 16));
/* 00/00/00/00 */
for (i = 0; i < m; i++) {
r = random() % m;
sprintf(fname, "00/%2.2x/%2.2x/00%2.2x%2.2x%2.2x",
((r >> 16) & 0xFF),
((r >> 8) & 0xFF),
((r >> 16) & 0xFF), ((r >> 8) & 0xFF), (r & 0xFF));
create_or_delete(fname);
}
fprintf(stderr, "Total create files: %d\n", cfilecount);
fprintf(stderr, "Total delete files: %d\n", dfilecount);
fprintf(stderr, "Total error : %d\n", errorcount);
exit(0);
}
#define MAXFSIZE (192*1024)
#define AVEFSIZE (MAXFSIZE/2)
#define POOLDISKSPACE (AVEFSIZE*128)
static int disk_space_pool = 0;
void create_or_delete(char *fname)
{
int r;
int fsize;
r = (random() & 1);
if (r && disk_space_pool > POOLDISKSPACE) {
/* create */
create_file(fname);
} else {
delete_file(fname);
}
if ((errorcount > dfilecount || errorcount > cfilecount)
&& (errorcount > MAXERROR)) {
fprintf(stderr, "too much error -- stop\n");
fprintf(stderr, "Total create files: %d\n", cfilecount);
fprintf(stderr, "Total delete files: %d\n", dfilecount);
fprintf(stderr, "Total error : %d\n", errorcount);
exit(1);
}
}
int create_file(char *filename)
{
int fd;
int randomsize;
char wbuf[MAXFSIZE];
if ((fd = creat(filename, S_IRWXU)) < 0) {
errorcount++;
return (-1);
}
if ((randomsize = box_muler(0, MAXFSIZE)) < 0) {
randomsize = MAXFSIZE;
}
if (write(fd, wbuf, randomsize) < 0) {
errorcount++;
close(fd);
return (-1);
}
cfilecount++;
disk_space_pool -= randomsize;
close(fd);
return 0;
}
#include <sys/stat.h>
#include <unistd.h>
int delete_file(char *filename)
{
struct stat buf;
int st;
st = stat(filename, &buf);
if (st < 0) {
errorcount++;
return (-1);
}
disk_space_pool += buf.st_size;
if (unlink(filename) < 0) {
errorcount++;
return (-1);
}
dfilecount++;
return 0;
}