| /* node-origins-table.c : operations on the `node-origins' table |
| * |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * ==================================================================== |
| */ |
| |
| #include "bdb_compat.h" |
| #include "../fs.h" |
| #include "../err.h" |
| #include "../id.h" |
| #include "dbt.h" |
| #include "../trail.h" |
| #include "bdb-err.h" |
| #include "../../libsvn_fs/fs-loader.h" |
| #include "node-origins-table.h" |
| |
| #include "svn_private_config.h" |
| |
| |
| int svn_fs_bdb__open_node_origins_table(DB **node_origins_p, |
| DB_ENV *env, |
| svn_boolean_t create) |
| { |
| const u_int32_t open_flags = (create ? (DB_CREATE | DB_EXCL) : 0); |
| DB *node_origins; |
| int error; |
| |
| BDB_ERR(svn_fs_bdb__check_version()); |
| BDB_ERR(db_create(&node_origins, env, 0)); |
| error = (node_origins->open)(SVN_BDB_OPEN_PARAMS(node_origins, NULL), |
| "node-origins", 0, DB_BTREE, |
| open_flags, 0666); |
| |
| /* Create the node-origins table if it doesn't exist. */ |
| if (error == ENOENT && (! create)) |
| { |
| BDB_ERR(node_origins->close(node_origins, 0)); |
| return svn_fs_bdb__open_node_origins_table(node_origins_p, env, TRUE); |
| } |
| |
| BDB_ERR(error); |
| |
| *node_origins_p = node_origins; |
| return 0; |
| } |
| |
| svn_error_t *svn_fs_bdb__get_node_origin(const svn_fs_id_t **origin_id, |
| svn_fs_t *fs, |
| const char *node_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| base_fs_data_t *bfd = fs->fsap_data; |
| DBT key, value; |
| int db_err; |
| |
| svn_fs_base__trail_debug(trail, "node-origins", "get"); |
| db_err = bfd->node_origins->get(bfd->node_origins, trail->db_txn, |
| svn_fs_base__str_to_dbt(&key, node_id), |
| svn_fs_base__result_dbt(&value), 0); |
| svn_fs_base__track_dbt(&value, pool); |
| |
| if (db_err == DB_NOTFOUND) |
| return svn_fs_base__err_no_such_node_origin(fs, node_id); |
| |
| *origin_id = svn_fs_base__id_parse(value.data, value.size, pool); |
| return SVN_NO_ERROR; |
| } |
| |
| svn_error_t *svn_fs_bdb__set_node_origin(svn_fs_t *fs, |
| const char *node_id, |
| const svn_fs_id_t *origin_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| base_fs_data_t *bfd = fs->fsap_data; |
| DBT key, value; |
| int db_err; |
| |
| /* Create a key from our NODE_ID. */ |
| svn_fs_base__str_to_dbt(&key, node_id); |
| |
| /* Check to see if we already have a mapping for NODE_ID. If so, |
| and the value is the same one we were about to write. That's |
| cool -- just do nothing. If, however, the value is *different*, |
| that's a red flag! */ |
| svn_fs_base__trail_debug(trail, "node-origins", "get"); |
| db_err = bfd->node_origins->get(bfd->node_origins, trail->db_txn, |
| &key, svn_fs_base__result_dbt(&value), 0); |
| svn_fs_base__track_dbt(&value, pool); |
| if (db_err != DB_NOTFOUND) |
| { |
| const svn_string_t *origin_id_str = |
| svn_fs_base__id_unparse(origin_id, pool); |
| const svn_string_t *old_origin_id_str = |
| svn_string_ncreate(value.data, value.size, pool); |
| |
| if (! svn_string_compare(origin_id_str, old_origin_id_str)) |
| return svn_error_createf |
| (SVN_ERR_FS_CORRUPT, NULL, |
| _("Node origin for '%s' exists in filesystem '%s' with a different " |
| "value (%s) than what we were about to store (%s)"), |
| node_id, fs->path, old_origin_id_str->data, origin_id_str->data); |
| else |
| return SVN_NO_ERROR; |
| } |
| |
| /* Create a value from our ORIGIN_ID, and add this record to the table. */ |
| svn_fs_base__id_to_dbt(&value, origin_id, pool); |
| svn_fs_base__trail_debug(trail, "node-origins", "put"); |
| return BDB_WRAP(fs, N_("storing node-origins record"), |
| bfd->node_origins->put(bfd->node_origins, trail->db_txn, |
| &key, &value, 0)); |
| } |
| |
| svn_error_t *svn_fs_bdb__delete_node_origin(svn_fs_t *fs, |
| const char *node_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| base_fs_data_t *bfd = fs->fsap_data; |
| DBT key; |
| |
| svn_fs_base__str_to_dbt(&key, node_id); |
| svn_fs_base__trail_debug(trail, "node-origins", "del"); |
| return BDB_WRAP(fs, N_("deleting entry from 'node-origins' table"), |
| bfd->node_origins->del(bfd->node_origins, |
| trail->db_txn, &key, 0)); |
| } |