/* 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 delete_file(char *filename);
|
int create_file(char *filename);
|
|
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;
|
|
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;
|
}
|
