75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
|
|
* Copyright (C) 2013 Andrea Mazzoleni
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __IMPORT_H
|
|
#define __IMPORT_H
|
|
|
|
#include "elem.h"
|
|
#include "state.h"
|
|
|
|
/****************************************************************************/
|
|
/* import */
|
|
|
|
/**
|
|
* Import block.
|
|
* Block used to import data external when recovering by hash.
|
|
*/
|
|
struct snapraid_import_block {
|
|
struct snapraid_import_file* file; /**< Back pointer to the file owning this block. */
|
|
unsigned size; /**< Size of the block. */
|
|
data_off_t offset; /**< Position of the block in the file. */
|
|
unsigned char hash[HASH_MAX]; /**< Hash of the block. */
|
|
unsigned char prevhash[HASH_MAX]; /**< Previous hash of the block. Valid only if we are in rehash state. */
|
|
|
|
/* nodes for data structures */
|
|
tommy_hashdyn_node nodeset;
|
|
tommy_hashdyn_node prevnodeset;
|
|
};
|
|
|
|
/**
|
|
* Import file.
|
|
* File used to import data external when recovering by hash.
|
|
*/
|
|
struct snapraid_import_file {
|
|
data_off_t size; /**< Size of the file. */
|
|
struct snapraid_import_block* blockimp; /**< All the blocks of the file. */
|
|
block_off_t blockmax; /**< Number of blocks. */
|
|
char* path; /**< Full path of the file. */
|
|
|
|
/* nodes for data structures */
|
|
tommy_node nodelist;
|
|
};
|
|
|
|
/**
|
|
* Deallocate an import file.
|
|
*/
|
|
void import_file_free(struct snapraid_import_file* file);
|
|
|
|
/**
|
|
* Fetch a block from the specified hash.
|
|
* Return ==0 if the block is found, and copied into buffer.
|
|
*/
|
|
int state_import_fetch(struct snapraid_state* state, int prevhash, struct snapraid_block* missing_block, unsigned char* buffer);
|
|
|
|
/**
|
|
* Import files from the specified directory.
|
|
*/
|
|
void state_import(struct snapraid_state* state, const char* dir);
|
|
|
|
#endif
|
|
|