static int fat_unformat_aux(struct ph_param *params, const struct ph_options *options, const uint64_t start_offset, alloc_data_t *list_search_space)
{
int ind_stop=0;
uint64_t offset;
uint64_t offset_end;
unsigned char *buffer_start;
unsigned char *buffer;
time_t start_time;
time_t previous_time;
const unsigned int blocksize=params->blocksize;
const unsigned int read_size=(blocksize>65536?blocksize:65536);
alloc_data_t *current_search_space;
file_recovery_t file_recovery;
disk_t *disk=params->disk;
const partition_t *partition=params->partition;
reset_file_recovery(&file_recovery);
file_recovery.blocksize=blocksize;
buffer_start=(unsigned char *)MALLOC(READ_SIZE);
buffer=buffer_start;
start_time=time(NULL);
previous_time=start_time;
current_search_space=td_list_entry(list_search_space->list.prev, alloc_data_t, list);
if(current_search_space==list_search_space)
{
free(buffer_start);
return 0;
}
offset_end=current_search_space->end;
current_search_space=td_list_entry(list_search_space->list.next, alloc_data_t, list);
offset=set_search_start(params, ¤t_search_space, list_search_space);
if(options->verbose>0)
info_list_search_space(list_search_space, current_search_space, disk->sector_size, 0, options->verbose);
disk->pread(disk, buffer, READ_SIZE, offset);
for(;offset < offset_end; offset+=blocksize)
{
if(memcmp(buffer, ". ", 8+3)==0 &&
memcmp(&buffer[0x20], ".. ", 8+3)==0)
{
file_data_t *dir_list;
dir_list=dir_fat_aux(buffer,read_size,0,0);
if(dir_list!=NULL)
{
const file_data_t *current_file;
log_info("Sector %llu\n", (long long unsigned)offset/disk->sector_size);
dir_aff_log(NULL, dir_list);
del_search_space(list_search_space, offset, offset + blocksize -1);
current_file=dir_list;
while(current_file!=NULL)
{
if(strcmp(current_file->name,".")==0 &&
LINUX_S_ISDIR(current_file->stat.st_mode)!=0 &&
current_file!=dir_list)
current_file=NULL;
else if(current_file->stat.st_ino>2 &&
LINUX_S_ISREG(current_file->stat.st_mode)!=0)
{
const uint64_t file_start=start_offset + (uint64_t)(current_file->stat.st_ino - 2) * blocksize;
#ifdef DJGPP
const uint64_t file_end=file_start+(current_file->file_size+blocksize-1)/blocksize*blocksize - 1;
#else
const uint64_t file_end=file_start+(current_file->stat.st_size+blocksize-1)/blocksize*blocksize - 1;
#endif
if(file_end < partition->part_offset + partition->part_size)
{
if(fat_copy_file(disk, partition, blocksize, start_offset, params->recup_dir, params->dir_num, current_file)==0)
{
params->file_nbr++;
del_search_space(list_search_space, file_start, file_end);
}
current_file=current_file->next;
}
else
current_file=NULL;
}
else
current_file=current_file->next;
}
delete_list_file(dir_list);
}
}
buffer+=blocksize;
if(buffer+read_size>buffer_start+READ_SIZE)
{
buffer=buffer_start;
if(options->verbose>1)
{
log_verbose("Reading sector %10llu/%llu\n",
(unsigned long long)((offset-partition->part_offset)/disk->sector_size),
(unsigned long long)((partition->part_size-1)/disk->sector_size));
}
if(disk->pread(disk, buffer, READ_SIZE, offset) != READ_SIZE)
{
#ifdef HAVE_NCURSES
wmove(stdscr,11,0);
wclrtoeol(stdscr);
wprintw(stdscr,"Error reading sector %10lu\n",
(unsigned long)((offset-partition->part_offset)/disk->sector_size));
#endif
}
#ifdef HAVE_NCURSES
{
time_t current_time;
current_time=time(NULL);
if(current_time>previous_time)
{
const time_t elapsed_time=current_time - params->real_start_time;
previous_time=current_time;
wmove(stdscr,9,0);
wclrtoeol(stdscr);
log_info("Reading sector %10llu/%llu, %u files found\n",
(unsigned long long)((offset-partition->part_offset)/disk->sector_size),
(unsigned long long)(partition->part_size/disk->sector_size), params->file_nbr);
wprintw(stdscr,"Reading sector %10llu/%llu, %u files found\n",
(unsigned long long)((offset-partition->part_offset)/disk->sector_size),
(unsigned long long)(partition->part_size/disk->sector_size), params->file_nbr);
wmove(stdscr,10,0);
wclrtoeol(stdscr);
wprintw(stdscr,"Elapsed time %uh%02um%02us",
(unsigned)(elapsed_time/60/60),
(unsigned)(elapsed_time/60%60),
(unsigned)(elapsed_time%60));
if(offset-partition->part_offset!=0)
{
wprintw(stdscr," - Estimated time to completion %uh%02um%02u\n",
(unsigned)((partition->part_offset+partition->part_size-1-offset)*elapsed_time/(offset-partition->part_offset)/3600),
(unsigned)(((partition->part_offset+partition->part_size-1-offset)*elapsed_time/(offset-partition->part_offset)/60)%60),
(unsigned)((partition->part_offset+partition->part_size-1-offset)*elapsed_time/(offset-partition->part_offset))%60);
}
wrefresh(stdscr);
if(check_enter_key_or_s(stdscr))
{
log_info("PhotoRec has been stopped\n");
params->offset=offset;
offset = offset_end;
ind_stop=1;
}
}
}
#endif
}
}
free(buffer_start);
return ind_stop;
}
static int pfind_sectors_per_cluster(disk_t *disk, partition_t *partition, const int verbose, unsigned int *sectors_per_cluster, uint64_t *offset_org, alloc_data_t *list_search_space)
{
uint64_t offset=0;
unsigned int nbr_subdir=0;
sector_cluster_t sector_cluster[10];
alloc_data_t *current_search_space;
unsigned char *buffer_start=(unsigned char *)MALLOC(READ_SIZE);
unsigned char *buffer=buffer_start;
current_search_space=td_list_entry(list_search_space->list.next, alloc_data_t, list);
if(current_search_space!=list_search_space)
offset=current_search_space->start;
if(verbose>0)
info_list_search_space(list_search_space, current_search_space, disk->sector_size, 0, verbose);
#ifdef HAVE_NCURSES
wmove(stdscr,22,0);
wattrset(stdscr, A_REVERSE);
waddstr(stdscr," Stop ");
wattroff(stdscr, A_REVERSE);
#endif
disk->pread(disk, buffer_start, READ_SIZE, offset);
while(current_search_space!=list_search_space && nbr_subdir<10)
{
const uint64_t old_offset=offset;
#ifdef HAVE_NCURSES
if((offset&(1024*disk->sector_size-1))==0)
{
wmove(stdscr,9,0);
wclrtoeol(stdscr);
wprintw(stdscr,"Search subdirectory %10lu/%lu %u",(unsigned long)(offset/disk->sector_size),(unsigned long)(partition->part_size/disk->sector_size),nbr_subdir);
wrefresh(stdscr);
}
#endif
if(memcmp(buffer, ". ", 8+3)==0 &&
memcmp(&buffer[0x20], ".. ", 8+3)==0)
{
const unsigned long int cluster=(buffer[0*0x20+0x15]<<24) + (buffer[0*0x20+0x14]<<16) +
(buffer[0*0x20+0x1B]<<8) + buffer[0*0x20+0x1A];
log_info("sector %lu, cluster %lu\n",
(unsigned long)(offset/disk->sector_size), cluster);
sector_cluster[nbr_subdir].cluster=cluster;
sector_cluster[nbr_subdir].sector=offset/disk->sector_size;
log_flush();
nbr_subdir++;
}
get_next_sector(list_search_space, ¤t_search_space, &offset, 512);
buffer+=512;
if( old_offset+512!=offset ||
buffer+512>buffer_start+READ_SIZE)
{
buffer=buffer_start;
if(verbose>1)
{
log_verbose("Reading sector %10llu/%llu\n",
(unsigned long long)((offset-partition->part_offset)/disk->sector_size),
(unsigned long long)((partition->part_size-1)/disk->sector_size));
}
if(disk->pread(disk, buffer_start, READ_SIZE, offset) != READ_SIZE)
{
}
}
} /* end while(current_search_space!=list_search_space) */
free(buffer_start);
return find_sectors_per_cluster_aux(sector_cluster,nbr_subdir,sectors_per_cluster,offset_org,verbose,partition->part_size/disk->sector_size, UP_UNK);
}
static int pfind_sectors_per_cluster(disk_t *disk, partition_t *partition, const int verbose, unsigned int *sectors_per_cluster, uint64_t *offset_org, alloc_data_t *list_search_space)
{
uint64_t offset=0;
uint64_t next_offset=0;
uint64_t diff_offset=0;
time_t previous_time=0;
unsigned int nbr_subdir=0;
sector_cluster_t sector_cluster[10];
alloc_data_t *current_search_space;
unsigned char *buffer_start=(unsigned char *)MALLOC(READ_SIZE);
unsigned char *buffer=buffer_start;
assert(disk->sector_size!=0);
current_search_space=td_list_first_entry(&list_search_space->list, alloc_data_t, list);
if(current_search_space!=list_search_space)
offset=current_search_space->start;
if(verbose>0)
info_list_search_space(list_search_space, current_search_space, disk->sector_size, 0, verbose);
#ifdef HAVE_NCURSES
wmove(stdscr,22,0);
wattrset(stdscr, A_REVERSE);
waddstr(stdscr," Stop ");
wattroff(stdscr, A_REVERSE);
#endif
disk->pread(disk, buffer_start, READ_SIZE, offset);
while(current_search_space!=list_search_space && nbr_subdir<10)
{
const uint64_t old_offset=offset;
if(buffer[0]=='.' && is_fat_directory(buffer))
{
const unsigned long int cluster=fat_get_cluster_from_entry((const struct msdos_dir_entry *)buffer);
log_info("sector %lu, cluster %lu\n",
(unsigned long)(offset/disk->sector_size), cluster);
sector_cluster[nbr_subdir].cluster=cluster;
sector_cluster[nbr_subdir].sector=offset/disk->sector_size;
log_flush();
nbr_subdir++;
}
get_next_sector(list_search_space, ¤t_search_space, &offset, 512);
buffer+=512;
if( old_offset+512!=offset ||
buffer+512>buffer_start+READ_SIZE)
{
buffer=buffer_start;
#ifdef HAVE_NCURSES
if(offset > next_offset)
{
const time_t current_time=time(NULL);
if(current_time==previous_time)
diff_offset<<=1;
else
diff_offset>>=1;
if(diff_offset < disk->sector_size)
diff_offset=disk->sector_size;
next_offset=offset+diff_offset;
previous_time=current_time;
wmove(stdscr,9,0);
wclrtoeol(stdscr);
wprintw(stdscr,"Search subdirectory %10lu/%lu %u",(unsigned long)(offset/disk->sector_size),(unsigned long)(partition->part_size/disk->sector_size),nbr_subdir);
wrefresh(stdscr);
}
#endif
if(verbose>1)
{
log_verbose("Reading sector %10llu/%llu\n",
(unsigned long long)((offset-partition->part_offset)/disk->sector_size),
(unsigned long long)((partition->part_size-1)/disk->sector_size));
}
if(disk->pread(disk, buffer_start, READ_SIZE, offset) != READ_SIZE)
{
#ifdef HAVE_NCURSES
wmove(stdscr,11,0);
wclrtoeol(stdscr);
wprintw(stdscr,"Error reading sector %10lu\n",
(unsigned long)((offset - partition->part_offset) / disk->sector_size));
#endif
}
}
} /* end while(current_search_space!=list_search_space) */
