+++ /dev/null
-/*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2011 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * Fuzzer to fuzz a file
- */
-
-#include <string.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <pthread.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-
-int main(int argc, char *argv[])
-{
- int prob = 10000;
- int h;
- int flen = 0;
- int changesPerBuffer = 0;
- int b;
- char c;
- unsigned char buffer[1000000];
- int bufsize;
- int x;
- int i;
- int nbuffers;
-
- while((c = getopt(argc,argv,"p:")) != -1){
- switch(c){
- case 'p':
- prob = atoi(optarg);
- break;
- }
- }
- if(prob < 100){
- printf("-p value less than 100 is invalid\n");
- return 1;
- }
-
- if(optind >= argc){
- printf(" Needs a file name to fuzz\n");
- return 1;
- }
-
- h = open(argv[optind], O_RDWR);
- flen = lseek(h,0,SEEK_END);
- lseek(h,0,SEEK_SET);
- if(flen < 1){
- printf(" File is too short\n");
- return 1;
- }
-
- nbuffers = (flen + sizeof(buffer) - 1) / sizeof(buffer);
-
- changesPerBuffer = 1+ (sizeof(buffer) * 8) / prob;
-
- printf("Fuzzing file %s. Size %d, probablity 1/%d, changing %d bits in each of %d buffers\n",
- argv[optind],flen,prob,changesPerBuffer,nbuffers);
-
- srand(time(0));
-
- for(b = 0; b < nbuffers; b++){
- /* printf("buffer %d\n",b); */
- lseek(h,b * sizeof(buffer),SEEK_SET);
- bufsize = read(h,buffer,sizeof(buffer));
- for(i = 0; i < changesPerBuffer; i++){
- x = rand() % (sizeof(buffer) * 8);
- buffer[x >> 3] ^= (1 << (x & 7));
- }
- lseek(h,b * sizeof(buffer),SEEK_SET);
- write(h,buffer,bufsize);
- }
- close(h);
- return 0;
-}