vendor/subversion/subversion-1.8.0-rc3

1 files changed, 210 insertions, 0 deletions

diff --git a/subversion/libsvn_fs_base/bdb/copies-table.c b/subversion/libsvn_fs_base/bdb/copies-table.c
new file mode 100644
index 0000000000000..7bf6ca8d70e8f
--- /dev/null
+++ b/subversion/libsvn_fs_base/bdb/copies-table.c
@@ -0,0 +1,210 @@
+/* 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(&copy_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, 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(&copy, skel, pool));
+  *copy_p = copy;
+  return SVN_NO_ERROR;
+}