| /* copies-table.c : operations on the `copies' 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 <string.h> |
| |
| #include "bdb_compat.h" |
| |
| #include "private/svn_skel.h" |
| |
| #include "../fs.h" |
| #include "../err.h" |
| #include "../key-gen.h" |
| #include "dbt.h" |
| #include "../util/fs_skels.h" |
| #include "../trail.h" |
| #include "../../libsvn_fs/fs-loader.h" |
| #include "bdb-err.h" |
| #include "copies-table.h" |
| #include "rev-table.h" |
| |
| #include "svn_private_config.h" |
| |
| |
| int |
| svn_fs_bdb__open_copies_table(DB **copies_p, |
| DB_ENV *env, |
| svn_boolean_t create) |
| { |
| const u_int32_t open_flags = (create ? (DB_CREATE | DB_EXCL) : 0); |
| DB *copies; |
| |
| BDB_ERR(svn_fs_bdb__check_version()); |
| BDB_ERR(db_create(&copies, env, 0)); |
| BDB_ERR((copies->open)(SVN_BDB_OPEN_PARAMS(copies, NULL), |
| "copies", 0, DB_BTREE, |
| open_flags, 0666)); |
| |
| /* Create the initial `next-key' table entry. */ |
| if (create) |
| { |
| DBT key, value; |
| BDB_ERR(copies->put(copies, 0, |
| svn_fs_base__str_to_dbt(&key, NEXT_KEY_KEY), |
| svn_fs_base__str_to_dbt(&value, "0"), 0)); |
| } |
| |
| *copies_p = copies; |
| return 0; |
| } |
| |
| |
| /* Store COPY as a copy named COPY_ID in FS as part of TRAIL. */ |
| /* ### only has one caller; might not need to be abstracted */ |
| static svn_error_t * |
| put_copy(svn_fs_t *fs, |
| const copy_t *copy, |
| const char *copy_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| base_fs_data_t *bfd = fs->fsap_data; |
| svn_skel_t *copy_skel; |
| DBT key, value; |
| |
| /* Convert native type to skel. */ |
| SVN_ERR(svn_fs_base__unparse_copy_skel(©_skel, copy, pool)); |
| |
| /* Only in the context of this function do we know that the DB call |
| will not attempt to modify COPY_ID, so the cast belongs here. */ |
| svn_fs_base__str_to_dbt(&key, copy_id); |
| svn_fs_base__skel_to_dbt(&value, copy_skel, pool); |
| svn_fs_base__trail_debug(trail, "copies", "put"); |
| return BDB_WRAP(fs, N_("storing copy record"), |
| bfd->copies->put(bfd->copies, trail->db_txn, |
| &key, &value, 0)); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_bdb__reserve_copy_id(const char **id_p, |
| svn_fs_t *fs, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| base_fs_data_t *bfd = fs->fsap_data; |
| DBT query, result; |
| apr_size_t len; |
| char next_key[MAX_KEY_SIZE]; |
| int db_err; |
| |
| svn_fs_base__str_to_dbt(&query, NEXT_KEY_KEY); |
| |
| /* Get the current value associated with the `next-key' key in the |
| copies table. */ |
| svn_fs_base__trail_debug(trail, "copies", "get"); |
| SVN_ERR(BDB_WRAP(fs, N_("allocating new copy ID (getting 'next-key')"), |
| bfd->copies->get(bfd->copies, trail->db_txn, &query, |
| svn_fs_base__result_dbt(&result), |
| 0))); |
| svn_fs_base__track_dbt(&result, pool); |
| |
| /* Set our return value. */ |
| *id_p = apr_pstrmemdup(pool, result.data, result.size); |
| |
| /* Bump to future key. */ |
| len = result.size; |
| svn_fs_base__next_key(result.data, &len, next_key); |
| svn_fs_base__trail_debug(trail, "copies", "put"); |
| db_err = bfd->copies->put(bfd->copies, trail->db_txn, |
| svn_fs_base__str_to_dbt(&query, NEXT_KEY_KEY), |
| svn_fs_base__str_to_dbt(&result, next_key), |
| 0); |
| |
| return BDB_WRAP(fs, N_("bumping next copy key"), db_err); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_bdb__create_copy(svn_fs_t *fs, |
| const char *copy_id, |
| const char *src_path, |
| const char *src_txn_id, |
| const svn_fs_id_t *dst_noderev_id, |
| copy_kind_t kind, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| copy_t copy; |
| copy.kind = kind; |
| copy.src_path = src_path; |
| copy.src_txn_id = src_txn_id; |
| copy.dst_noderev_id = dst_noderev_id; |
| return put_copy(fs, ©, copy_id, trail, pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_bdb__delete_copy(svn_fs_t *fs, |
| const char *copy_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| base_fs_data_t *bfd = fs->fsap_data; |
| DBT key; |
| int db_err; |
| |
| svn_fs_base__str_to_dbt(&key, copy_id); |
| svn_fs_base__trail_debug(trail, "copies", "del"); |
| db_err = bfd->copies->del(bfd->copies, trail->db_txn, &key, 0); |
| if (db_err == DB_NOTFOUND) |
| return svn_fs_base__err_no_such_copy(fs, copy_id); |
| return BDB_WRAP(fs, N_("deleting entry from 'copies' table"), db_err); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_bdb__get_copy(copy_t **copy_p, |
| svn_fs_t *fs, |
| const char *copy_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| base_fs_data_t *bfd = fs->fsap_data; |
| DBT key, value; |
| int db_err; |
| svn_skel_t *skel; |
| copy_t *copy; |
| |
| /* Only in the context of this function do we know that the DB call |
| will not attempt to modify copy_id, so the cast belongs here. */ |
| svn_fs_base__trail_debug(trail, "copies", "get"); |
| db_err = bfd->copies->get(bfd->copies, trail->db_txn, |
| svn_fs_base__str_to_dbt(&key, copy_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_copy(fs, copy_id); |
| SVN_ERR(BDB_WRAP(fs, N_("reading copy"), db_err)); |
| |
| /* Unparse COPY skel */ |
| skel = svn_skel__parse(value.data, value.size, pool); |
| if (! skel) |
| return svn_fs_base__err_corrupt_copy(fs, copy_id); |
| |
| /* Convert skel to native type. */ |
| SVN_ERR(svn_fs_base__parse_copy_skel(©, skel, pool)); |
| *copy_p = copy; |
| return SVN_NO_ERROR; |
| } |