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-rw-r--r--lib/fstree/deduplicate.c133
1 files changed, 0 insertions, 133 deletions
diff --git a/lib/fstree/deduplicate.c b/lib/fstree/deduplicate.c
deleted file mode 100644
index 00815a6..0000000
--- a/lib/fstree/deduplicate.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * deduplicate.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "fstree.h"
-
-#include <string.h>
-
-file_info_t *fragment_by_chksum(file_info_t *fi, uint32_t chksum,
- size_t frag_size, file_info_t *list,
- size_t block_size)
-{
- file_info_t *it;
-
- for (it = list; it != NULL; it = it->next) {
- if (it == fi)
- continue;
-
- if (!(it->flags & FILE_FLAG_HAS_FRAGMENT))
- continue;
-
- if (it->flags & FILE_FLAG_FRAGMENT_IS_DUPLICATE)
- continue;
-
- if ((it->size % block_size) != frag_size)
- continue;
-
- if (it->fragment_chksum == chksum)
- break;
- }
-
- return it;
-}
-
-static size_t get_block_count(file_info_t *fi, size_t block_size)
-{
- size_t count = fi->size / block_size;
-
- if ((fi->size % block_size) && !(fi->flags & FILE_FLAG_HAS_FRAGMENT))
- ++count;
-
- while (count > 0 && fi->blocks[count - 1].size == 0)
- --count;
-
- return count;
-}
-
-static size_t find_first_match(file_info_t *file, file_info_t *cmp,
- size_t idx, size_t cmp_blk_count)
-{
- size_t i;
-
- for (i = 0; i < cmp_blk_count; ++i) {
- if (memcmp(file->blocks + idx, cmp->blocks + i,
- sizeof(file->blocks[idx])) == 0) {
- break;
- }
- }
-
- return i;
-}
-
-uint64_t find_equal_blocks(file_info_t *file, file_info_t *list,
- size_t block_size)
-{
- size_t start, first_match, i, j, block_count, cmp_blk_count;
- uint64_t location;
- file_info_t *it;
-
- block_count = get_block_count(file, block_size);
- if (block_count == 0)
- return 0;
-
- for (start = 0; start < block_count; ++start) {
- if (file->blocks[start].size != 0)
- break;
- }
-
- for (it = list; it != NULL; it = it->next) {
- if (it == file)
- continue;
-
- if (it->flags & FILE_FLAG_BLOCKS_ARE_DUPLICATE)
- continue;
-
- cmp_blk_count = get_block_count(it, block_size);
- if (cmp_blk_count == 0)
- continue;
-
- first_match = find_first_match(file, it, start, cmp_blk_count);
- if (first_match == cmp_blk_count)
- continue;
-
- i = start;
- j = first_match;
-
- while (i < block_count && j < cmp_blk_count) {
- if (file->blocks[i].size == 0) {
- ++i;
- continue;
- }
-
- if (it->blocks[j].size == 0) {
- ++j;
- continue;
- }
-
- if (memcmp(it->blocks + j, file->blocks + i,
- sizeof(file->blocks[i])) != 0) {
- break;
- }
-
- ++i;
- ++j;
- }
-
- if (i == block_count)
- break;
- }
-
- if (it == NULL)
- return 0;
-
- location = it->startblock;
-
- for (i = 0; i < first_match; ++i)
- location += it->blocks[i].size & ((1 << 24) - 1);
-
- return location;
-}