1/* uuids-table.c : operations on the `uuids' table 2 * 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 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 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 19 * under the License. 20 * ==================================================================== 21 */ 22 23#include <apr_uuid.h> 24 25#include "bdb_compat.h" 26#include "svn_fs.h" 27#include "../fs.h" 28#include "../err.h" 29#include "dbt.h" 30#include "../trail.h" 31#include "../../libsvn_fs/fs-loader.h" 32#include "bdb-err.h" 33#include "uuids-table.h" 34 35#include "svn_private_config.h" 36 37 38/*** Creating and opening the uuids table. 39 When the table is created, the repository's uuid is 40 generated and stored as record #1. ***/ 41 42int 43svn_fs_bdb__open_uuids_table(DB **uuids_p, 44 DB_ENV *env, 45 svn_boolean_t create) 46{ 47 const u_int32_t open_flags = (create ? (DB_CREATE | DB_EXCL) : 0); 48 DB *uuids; 49 int error; 50 51 BDB_ERR(svn_fs_bdb__check_version()); 52 BDB_ERR(db_create(&uuids, env, 0)); 53 BDB_ERR(uuids->set_re_len(uuids, APR_UUID_FORMATTED_LENGTH)); 54 55 error = (uuids->open)(SVN_BDB_OPEN_PARAMS(uuids, NULL), 56 "uuids", 0, DB_RECNO, 57 open_flags, 0666); 58 59 /* This is a temporary compatibility check; it creates the 60 UUIDs table if one does not already exist. */ 61 if (error == ENOENT && (! create)) 62 { 63 BDB_ERR(uuids->close(uuids, 0)); 64 return svn_fs_bdb__open_uuids_table(uuids_p, env, TRUE); 65 } 66 67 BDB_ERR(error); 68 69 if (create) 70 { 71 char buffer[APR_UUID_FORMATTED_LENGTH + 1]; 72 DBT key, value; 73 apr_uuid_t uuid; 74 int recno = 0; 75 76 svn_fs_base__clear_dbt(&key); 77 key.data = &recno; 78 key.size = sizeof(recno); 79 key.ulen = key.size; 80 key.flags |= DB_DBT_USERMEM; 81 82 svn_fs_base__clear_dbt(&value); 83 value.data = buffer; 84 value.size = sizeof(buffer) - 1; 85 86 apr_uuid_get(&uuid); 87 apr_uuid_format(buffer, &uuid); 88 89 BDB_ERR(uuids->put(uuids, 0, &key, &value, DB_APPEND)); 90 } 91 92 *uuids_p = uuids; 93 return 0; 94} 95 96svn_error_t *svn_fs_bdb__get_uuid(svn_fs_t *fs, 97 int idx, 98 const char **uuid, 99 trail_t *trail, 100 apr_pool_t *pool) 101{ 102 base_fs_data_t *bfd = fs->fsap_data; 103 char buffer[APR_UUID_FORMATTED_LENGTH + 1]; 104 DB *uuids = bfd->uuids; 105 DBT key; 106 DBT value; 107 108 svn_fs_base__clear_dbt(&key); 109 key.data = &idx; 110 key.size = sizeof(idx); 111 112 svn_fs_base__clear_dbt(&value); 113 value.data = buffer; 114 value.size = sizeof(buffer) - 1; 115 value.ulen = value.size; 116 value.flags |= DB_DBT_USERMEM; 117 118 svn_fs_base__trail_debug(trail, "uuids", "get"); 119 SVN_ERR(BDB_WRAP(fs, N_("get repository uuid"), 120 uuids->get(uuids, trail->db_txn, &key, &value, 0))); 121 122 *uuid = apr_pstrmemdup(pool, value.data, value.size); 123 124 return SVN_NO_ERROR; 125} 126 127svn_error_t *svn_fs_bdb__set_uuid(svn_fs_t *fs, 128 int idx, 129 const char *uuid, 130 trail_t *trail, 131 apr_pool_t *pool) 132{ 133 base_fs_data_t *bfd = fs->fsap_data; 134 DB *uuids = bfd->uuids; 135 DBT key; 136 DBT value; 137 138 svn_fs_base__clear_dbt(&key); 139 key.data = &idx; 140 key.size = sizeof(idx); 141 142 svn_fs_base__clear_dbt(&value); 143 value.size = (u_int32_t) strlen(uuid); 144 value.data = apr_pstrmemdup(pool, uuid, value.size + 1); 145 146 svn_fs_base__trail_debug(trail, "uuids", "put"); 147 return BDB_WRAP(fs, N_("set repository uuid"), 148 uuids->put(uuids, trail->db_txn, &key, &value, 0)); 149} 150