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275063d23c
Add a new 'dealloc' list per disk to record files that were removed or modified during a scan. This list is saved in the content file (new format version SNAPCNT4) so that past parity contributions of those files can be imported from previous snapshots.
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
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// Copyright (C) 2013 Andrea Mazzoleni
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#ifndef __IMPORT_H
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#define __IMPORT_H
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#include "elem.h"
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#include "state.h"
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/****************************************************************************/
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/* import */
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/**
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* Import block.
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* Block used to import data external when recovering by hash.
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*/
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struct snapraid_import_block {
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struct snapraid_import_file* file; /**< Back pointer to the file owning this block. */
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unsigned size; /**< Size of the block. */
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data_off_t offset; /**< Position of the block in the file. */
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unsigned char hash[HASH_MAX]; /**< Hash of the block. */
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unsigned char prevhash[HASH_MAX]; /**< Previous hash of the block. Valid only if we are in rehash state. */
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/* nodes for data structures */
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tommy_hashdyn_node nodeset;
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tommy_hashdyn_node prevnodeset;
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};
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/**
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* Import file.
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* File used to import data external when recovering by hash.
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*/
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struct snapraid_import_file {
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data_off_t size; /**< Size of the file. */
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struct snapraid_import_block* blockimp; /**< All the blocks of the file. */
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block_off_t blockmax; /**< Number of blocks. */
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char* path; /**< Full path of the file. */
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int is_runtime; /**< If the hash was obtained at runtime */
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/* nodes for data structures */
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tommy_node nodelist;
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};
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/**
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* Deallocate an import file.
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*/
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void import_file_free(struct snapraid_import_file* file);
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/**
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* Fetch a block from the specified hash.
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* Return ==0 if the block is found, and copied into buffer.
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*/
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int state_import_fetch(struct snapraid_state* state, int prevhash, struct snapraid_block* missing_block, unsigned char* buffer);
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/**
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* Import files from the specified directory.
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*/
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void state_import(struct snapraid_state* state, const char* dir);
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/**
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* Import files from the dealloc list.
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*/
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void state_dealloc(struct snapraid_state* state, const char* dir, tommy_list* dealloclist);
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#endif
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