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