1 /* load-index-cmd.c -- implements the dump-index sub-command.
3 * ====================================================================
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
20 * ====================================================================
23 #include "svn_pools.h"
25 #include "private/svn_fs_fs_private.h"
26 #include "private/svn_sorts_private.h"
30 #include "transaction.h"
32 /* A svn_sort__array compatible comparator function, sorting the
33 * svn_fs_fs__p2l_entry_t** given in LHS, RHS by offset. */
35 compare_p2l_entry_revision(const void *lhs,
38 const svn_fs_fs__p2l_entry_t *lhs_entry
39 =*(const svn_fs_fs__p2l_entry_t **)lhs;
40 const svn_fs_fs__p2l_entry_t *rhs_entry
41 =*(const svn_fs_fs__p2l_entry_t **)rhs;
43 if (lhs_entry->offset < rhs_entry->offset)
46 return lhs_entry->offset == rhs_entry->offset ? 0 : 1;
50 svn_fs_fs__load_index(svn_fs_t *fs,
51 svn_revnum_t revision,
52 apr_array_header_t *entries,
53 apr_pool_t *scratch_pool)
55 apr_pool_t *iterpool = svn_pool_create(scratch_pool);
57 /* Check the FS format number. */
58 if (! svn_fs_fs__use_log_addressing(fs))
59 return svn_error_create(SVN_ERR_FS_UNSUPPORTED_FORMAT, NULL, NULL);
61 /* P2L index must be written in offset order.
62 * Sort ENTRIES accordingly. */
63 svn_sort__array(entries, compare_p2l_entry_revision);
65 /* Treat an empty array as a no-op instead error. */
66 if (entries->nelts != 0)
68 const char *l2p_proto_index;
69 const char *p2l_proto_index;
70 svn_fs_fs__revision_file_t *rev_file;
72 /* Open rev / pack file & trim indexes + footer off it. */
73 SVN_ERR(svn_fs_fs__open_pack_or_rev_file_writable(&rev_file, fs,
76 SVN_ERR(svn_fs_fs__auto_read_footer(rev_file));
77 SVN_ERR(svn_io_file_trunc(rev_file->file, rev_file->l2p_offset,
80 /* Create proto index files for the new index data
81 * (will be cleaned up automatically with iterpool). */
82 SVN_ERR(svn_fs_fs__p2l_index_from_p2l_entries(&p2l_proto_index, fs,
85 SVN_ERR(svn_fs_fs__l2p_index_from_p2l_entries(&l2p_proto_index, fs,
89 /* Combine rev data with new index data. */
90 SVN_ERR(svn_fs_fs__add_index_data(fs, rev_file->file, l2p_proto_index,
92 rev_file->start_revision, iterpool));
95 svn_pool_destroy(iterpool);