/**
* cat
*/
static int cat(ntfs_volume *vol, ntfs_inode *inode, ATTR_TYPES type,
ntfschar *name, int namelen)
{
const int bufsize = 4096;
char *buffer;
ntfs_attr *attr;
s64 bytes_read, written;
s64 offset;
u32 block_size;
buffer = malloc(bufsize);
if (!buffer)
return 1;
attr = ntfs_attr_open(inode, type, name, namelen);
if (!attr) {
ntfs_log_error("Cannot find attribute type 0x%x.\n",
le32_to_cpu(type));
free(buffer);
return 1;
}
if ((inode->mft_no < 2) && (attr->type == AT_DATA))
block_size = vol->mft_record_size;
else if (attr->type == AT_INDEX_ALLOCATION)
block_size = index_get_size(inode);
else
block_size = 0;
offset = 0;
for (;;) {
if (!opts.raw && block_size > 0) {
// These types have fixup
bytes_read = ntfs_attr_mst_pread(attr, offset, 1, block_size, buffer);
if (bytes_read > 0)
bytes_read *= block_size;
} else {
bytes_read = ntfs_attr_pread(attr, offset, bufsize, buffer);
}
//ntfs_log_info("read %lld bytes\n", bytes_read);
if (bytes_read == -1) {
ntfs_log_perror("ERROR: Couldn't read file");
break;
}
if (!bytes_read)
break;
written = fwrite(buffer, 1, bytes_read, stdout);
if (written != bytes_read) {
ntfs_log_perror("ERROR: Couldn't output all data!");
break;
}
offset += bytes_read;
}
ntfs_attr_close(attr);
free(buffer);
return 0;
}
static int ntfs_ib_read(ntfs_index_context *icx, VCN vcn, INDEX_BLOCK *dst)
{
s64 pos, ret;
ntfs_log_trace("vcn: %lld\n", (long long)vcn);
pos = ntfs_ib_vcn_to_pos(icx, vcn);
ret = ntfs_attr_mst_pread(icx->ia_na, pos, 1, icx->block_size, (u8 *)dst);
if (ret != 1) {
if (ret == -1)
ntfs_log_perror("Failed to read index block");
else
ntfs_log_error("Failed to read full index block at "
"%lld\n", (long long)pos);
return -1;
}
if (ntfs_ia_check(icx, dst, vcn))
return -1;
return 0;
}
static int ntfs_copy(disk_t *disk_car, const partition_t *partition, dir_data_t *dir_data, const file_info_t *file)
{
const unsigned long int first_inode=file->st_ino;
ntfs_inode *inode;
struct ntfs_dir_struct *ls=(struct ntfs_dir_struct*)dir_data->private_dir_data;
inode = ntfs_inode_open (ls->vol, first_inode);
if (!inode) {
log_error("ntfs_copy: ntfs_inode_open failed for %s\n", dir_data->current_directory);
return -1;
}
{
char *buffer;
char *new_file;
ntfs_attr *attr=NULL;
FILE *f_out;
char *stream_name;
s64 offset;
u32 block_size;
buffer = (char *)MALLOC(bufsize);
if (!buffer)
{
ntfs_inode_close(inode);
return -2;
}
stream_name=strrchr(dir_data->current_directory, ':');
if(stream_name)
stream_name++;
if(stream_name != NULL)
{
ntfschar *stream_name_ucs=NULL;
#ifdef NTFS_MBSTOUCS_HAVE_TWO_ARGUMENTS
const int len=ntfs_mbstoucs(stream_name, &stream_name_ucs);
#else
const int len=ntfs_mbstoucs(stream_name, &stream_name_ucs, 0);
#endif
if(len < 0)
log_error("ntfs_mbstoucs failed\n");
else
attr = ntfs_attr_open(inode, AT_DATA, stream_name_ucs, len);
}
else
attr = ntfs_attr_open(inode, AT_DATA, NULL, 0);
if (!attr)
{
log_error("Cannot find attribute type 0x%lx.\n", (long) AT_DATA);
free(buffer);
ntfs_inode_close(inode);
return -3;
}
if ((inode->mft_no < 2) && (attr->type == AT_DATA))
block_size = ls->vol->mft_record_size;
else if (attr->type == AT_INDEX_ALLOCATION)
block_size = index_get_size(inode);
else
block_size = 0;
#if defined(__CYGWIN__) || defined(__MINGW32__)
if(stream_name)
{
/* fopen() create normal files instead of ADS with ':' replaced by an UTF char
* replace ':' by '_' instead */
stream_name--;
*stream_name='_';
f_out=fopen_local(&new_file, dir_data->local_dir, dir_data->current_directory);
}
else
f_out=fopen_local(&new_file, dir_data->local_dir, dir_data->current_directory);
#else
f_out=fopen_local(&new_file, dir_data->local_dir, dir_data->current_directory);
#endif
if(!f_out)
{
log_critical("Can't create file %s: %s\n",new_file, strerror(errno));
free(new_file);
ntfs_attr_close(attr);
free(buffer);
ntfs_inode_close(inode);
return -4;
}
offset = 0;
for (;;)
{
s64 bytes_read, written;
if (block_size > 0) {
// These types have fixup
bytes_read = ntfs_attr_mst_pread(attr, offset, 1, block_size, buffer);
bytes_read *= block_size;
} else {
bytes_read = ntfs_attr_pread(attr, offset, bufsize, buffer);
}
//ntfs_log_info("read %lld bytes\n", bytes_read);
if (bytes_read < 0) {
log_error("ERROR: Couldn't read file");
break;
}
if (!bytes_read)
break;
written = fwrite(buffer, 1, bytes_read, f_out);
if (written != bytes_read)
{
log_error("ERROR: Couldn't output all data!");
break;
}
offset += bytes_read;
}
fclose(f_out);
set_date(new_file, file->td_atime, file->td_mtime);
free(new_file);
ntfs_attr_close(attr);
free(buffer);
}
/* Finished with the inode; release it. */
ntfs_inode_close(inode);
return 0;
}
static int ntfsrec_emit_file(struct ntfsrec_copy *state, ntfs_inode *inode, const char *name) {
ntfs_attr *data_attribute;
char *old_path_end;
if (ntfsrec_append_filename(state, name, &old_path_end) == NR_FALSE) {
printf("Error: path %s and filename %s are too long.\n", state->path, name);
return NR_FALSE;
}
data_attribute = ntfs_attr_open(inode, AT_DATA, NULL, 0);
if (data_attribute != NULL) {
int output_fd;
unsigned int block_size = 0, retries = 0;
s64 offset = 0;
output_fd = open(state->path, O_WRONLY | O_CREAT);
if (output_fd != -1) {
if (inode->mft_no < 2) {
block_size = state->volume->mft_record_size;
}
for(;;) {
s64 bytes_read = 0;
if (block_size > 0) {
bytes_read = ntfs_attr_mst_pread(data_attribute, offset, 1, block_size, state->file_buffer);
bytes_read *= block_size;
} else {
bytes_read = ntfs_attr_pread(data_attribute, offset, NR_FILE_BUFFER_SIZE, state->file_buffer);
}
if (bytes_read == -1) {
unsigned int actual_size = block_size > 0 ? block_size : NR_FILE_BUFFER_SIZE;
if (retries++ < state->opt.retries) {
state->stats.retries++;
continue;
}
state->stats.errors++;
printf("Error: failed %u times to read %s, skipping %d bytes\n", retries, name, actual_size);
lseek(output_fd, actual_size, SEEK_CUR);
offset += actual_size;
continue;
}
if (bytes_read == 0) {
break;
}
if (write(output_fd, state->file_buffer, bytes_read) < 0) {
printf("Error: unable to write to output file %s\n", state->path);
if (retries++ < state->opt.retries) {
state->stats.retries++;
continue;
}
break;
}
retries = 0;
offset += bytes_read;
}
close(output_fd);
}
state->stats.files++;
ntfs_attr_close(data_attribute);
} else {
printf("Error: can't access the data for %s\n", name);
}
*old_path_end = '\0';
state->current_path_end = old_path_end;
return NR_TRUE;
}