int get_superblock(struct ext_superblock_t *sb, int fd, char *buf, uint32_t size, int fs) {
int offset = align_read(fd, buf, SUPERBLOCKOFFSET, SUPERBLOCKSIZE, size, DOM0BLOCKSIZE);
if (offset < 0) {
printf("offset:%d\n", offset);
return -1;
}
if (parse_superblock(sb, buf + offset, size - offset, fs) < 0) {
printf("parse error\n");
return -1;
}
return 0;
}
struct data *parse_file(char *buf,const char *filename,char *_filename){
struct zfs_superblock *sblk = malloc(sizeof(struct zfs_superblock *));
parse_superblock(filename,sblk);
int end = 0;
while(1){
if(buf[end] == 0x0F && buf[end + 1] == 'E' && buf[end + 2] == 0x0F && buf[end + 3] == 'O' && buf[end + 4] == 0x0F && buf[end + 5] == 'F' && buf[end + 6] == 0x0F)
break;
end++;
}
end--;
printf("[end] %d [sblk.fds] %d\n",end,sblk->fds);
struct data *ret = malloc(sizeof(struct data *));
int *se = malloc(80);
if((end % 512) == 0)
se = find_unalloc_block(filename,end,*sblk);
else
se = find_unalloc_block(filename,end,*sblk);
if(!(se)){
printf("Error finding unallocated block!\n");
return -1;
}
printf("[se(0)] %d [se(1)] %d\n",se[0],se[1]);
ret->alloc = 1;
ret->startingblock = se[0];
ret->endingblock = se[1];
if(strlen(_filename) > 10)
ret->islongname = 1;
else
ret->islongname = 0;
if(ret->islongname)
ret->namelen = strlen(filename);
else
ret->namelen = 0;
ret->name = _filename;
ret->type = TYPE_FILE;
ret->blockpos = ret->startingblock;
return ret;
}
int main(int argc, char* argv[]){
if(argc != 3){
usage(argv[0]);
return -1;
}
FILE *f;
if(!(f = fopen(argv[1],"r"))){
printf("Error opening file:%s\n",argv[1]);
return -1;
}
fclose(f);
if(!(f = fopen(argv[2],"r"))){
printf("Error opening file:%s\n",argv[2]);
}
char *buf = malloc(get_end(argv[1]));
printf("Reading file to buf\n");
if(!(read_buf(buf,argv[1]))){
printf("Error reading to buffer!\n");
return -1;
}
printf("Erasing %s\n",argv[1]);
if(!(zero_out(argv[1]))){
printf("Error erasing %s\n",argv[1]);
}
printf("Rewriting\n");
if(!(write_buf(buf,argv[1]))){
printf("Error restoring %s\n",argv[1]);
}
printf("freeing memory\n");
free(buf);
printf("Reading buffer\n");
buf = malloc(get_end(argv[1]));
read_buf(buf,argv[1]);
printf("Parsing superblock\n");
struct zfs_superblock *sblk = malloc(sizeof(struct zfs_superblock *));
parse_superblock(argv[1],sblk);
if(!(sblk))
return -1;
printf("Dumping: [allocblk] %d [unallocblk] %d [tblk] %d\n [dataresv] %d [rootfsblk] %d [numoff] %d\n [numofd] %d [fds] %d\n",sblk->allocblk,sblk->unallocblk,sblk->tblk,sblk->dataresv,sblk->rootfsblk,sblk->numoff,sblk->numofd,sblk->fds);
printf("Finding datablock\n");
int db = find_datablk(*sblk,argv[1]);
if(db < 0){
printf("Error finding datablock!\n");
return -1;
}
printf("freeing buffer\n");
free(buf);
printf("Allocating memory\n");
buf = malloc(get_end(argv[2]));
if(!(buf)){
printf("Error allocating %d bytes of memory!\n",get_end(argv[2]));
}
printf("Reading buffer\n");
if(!(read_buf(buf,argv[2]))){
printf("Error reading buffer!\n");
return -1;;
}
printf("Parsing file\n");
struct data *d = parse_file(buf,argv[1],argv[2]);
if(!(d)){
printf("Error parsing file!\n");
return -1;
}
printf("Dumping: [alloc] %d [islongname] %d [namelen] %d [name] %s\n [type] %d [offset] %d [endingpos] %d [blockpos] %d\n [startingblock] %d [endingblock] %d\n"
,d->alloc,d->islongname,d->namelen,d->name,d->type,d->offset,d->endingpos,d->blockpos,d->startingblock,d->endingblock);
printf("Writing datablock\n");
if(!(write_datablk(*sblk,d,argv[1],db))){
printf("Error writing datablock!\n");
return -1;
}
}
