| /* revs-txns.c : operations on revision and transactions |
| * |
| * ==================================================================== |
| * 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 <apr_tables.h> |
| #include <apr_pools.h> |
| |
| #include "svn_pools.h" |
| #include "svn_time.h" |
| #include "svn_fs.h" |
| #include "svn_props.h" |
| #include "svn_hash.h" |
| #include "svn_io.h" |
| |
| #include "fs.h" |
| #include "dag.h" |
| #include "err.h" |
| #include "trail.h" |
| #include "tree.h" |
| #include "revs-txns.h" |
| #include "key-gen.h" |
| #include "id.h" |
| #include "bdb/rev-table.h" |
| #include "bdb/txn-table.h" |
| #include "bdb/copies-table.h" |
| #include "bdb/changes-table.h" |
| #include "../libsvn_fs/fs-loader.h" |
| |
| #include "svn_private_config.h" |
| #include "private/svn_fs_util.h" |
| |
| |
| /*** Helpers ***/ |
| |
| /* Set *txn_p to a transaction object allocated in POOL for the |
| transaction in FS whose id is TXN_ID. If EXPECT_DEAD is set, this |
| transaction must be a dead one, else an error is returned. If |
| EXPECT_DEAD is not set, the transaction must *not* be a dead one, |
| else an error is returned. */ |
| static svn_error_t * |
| get_txn(transaction_t **txn_p, |
| svn_fs_t *fs, |
| const char *txn_id, |
| svn_boolean_t expect_dead, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| SVN_ERR(svn_fs_bdb__get_txn(&txn, fs, txn_id, trail, pool)); |
| if (expect_dead && (txn->kind != transaction_kind_dead)) |
| return svn_error_createf(SVN_ERR_FS_TRANSACTION_NOT_DEAD, 0, |
| _("Transaction is not dead: '%s'"), txn_id); |
| if ((! expect_dead) && (txn->kind == transaction_kind_dead)) |
| return svn_error_createf(SVN_ERR_FS_TRANSACTION_DEAD, 0, |
| _("Transaction is dead: '%s'"), txn_id); |
| *txn_p = txn; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| /* This is only for symmetry with the get_txn() helper. */ |
| #define put_txn svn_fs_bdb__put_txn |
| |
| |
| |
| /*** Revisions ***/ |
| |
| /* Return the committed transaction record *TXN_P and its ID *TXN_ID |
| (as long as those parameters aren't NULL) for the revision REV in |
| FS as part of TRAIL. */ |
| static svn_error_t * |
| get_rev_txn(transaction_t **txn_p, |
| const char **txn_id, |
| svn_fs_t *fs, |
| svn_revnum_t rev, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| revision_t *revision; |
| transaction_t *txn; |
| |
| SVN_ERR(svn_fs_bdb__get_rev(&revision, fs, rev, trail, pool)); |
| if (revision->txn_id == NULL) |
| return svn_fs_base__err_corrupt_fs_revision(fs, rev); |
| |
| SVN_ERR(get_txn(&txn, fs, revision->txn_id, FALSE, trail, pool)); |
| if (txn->revision != rev) |
| return svn_fs_base__err_corrupt_txn(fs, revision->txn_id); |
| |
| if (txn_p) |
| *txn_p = txn; |
| if (txn_id) |
| *txn_id = revision->txn_id; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__rev_get_root(const svn_fs_id_t **root_id_p, |
| svn_fs_t *fs, |
| svn_revnum_t rev, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| |
| SVN_ERR(get_rev_txn(&txn, NULL, fs, rev, trail, pool)); |
| if (txn->root_id == NULL) |
| return svn_fs_base__err_corrupt_fs_revision(fs, rev); |
| |
| *root_id_p = txn->root_id; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__rev_get_txn_id(const char **txn_id_p, |
| svn_fs_t *fs, |
| svn_revnum_t rev, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| revision_t *revision; |
| |
| SVN_ERR(svn_fs_bdb__get_rev(&revision, fs, rev, trail, pool)); |
| if (revision->txn_id == NULL) |
| return svn_fs_base__err_corrupt_fs_revision(fs, rev); |
| |
| *txn_id_p = revision->txn_id; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| static svn_error_t * |
| txn_body_youngest_rev(void *baton, trail_t *trail) |
| { |
| return svn_fs_bdb__youngest_rev(baton, trail->fs, trail, trail->pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__youngest_rev(svn_revnum_t *youngest_p, |
| svn_fs_t *fs, |
| apr_pool_t *pool) |
| { |
| svn_revnum_t youngest; |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_youngest_rev, &youngest, |
| TRUE, pool)); |
| *youngest_p = youngest; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| struct revision_proplist_args { |
| apr_hash_t **table_p; |
| svn_revnum_t rev; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_revision_proplist(void *baton, trail_t *trail) |
| { |
| struct revision_proplist_args *args = baton; |
| transaction_t *txn; |
| |
| SVN_ERR(get_rev_txn(&txn, NULL, trail->fs, args->rev, trail, trail->pool)); |
| *(args->table_p) = txn->proplist; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__revision_proplist(apr_hash_t **table_p, |
| svn_fs_t *fs, |
| svn_revnum_t rev, |
| svn_boolean_t refresh, |
| apr_pool_t *result_pool, |
| apr_pool_t *scratch_pool) |
| { |
| struct revision_proplist_args args; |
| apr_hash_t *table; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| args.table_p = &table; |
| args.rev = rev; |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_revision_proplist, &args, |
| FALSE, result_pool)); |
| |
| *table_p = table ? table : apr_hash_make(result_pool); |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__revision_prop(svn_string_t **value_p, |
| svn_fs_t *fs, |
| svn_revnum_t rev, |
| const char *propname, |
| svn_boolean_t refresh, |
| apr_pool_t *result_pool, |
| apr_pool_t *scratch_pool) |
| { |
| struct revision_proplist_args args; |
| apr_hash_t *table; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| /* Get the proplist. */ |
| args.table_p = &table; |
| args.rev = rev; |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_revision_proplist, &args, |
| FALSE, result_pool)); |
| |
| /* And then the prop from that list (if there was a list). */ |
| *value_p = svn_hash_gets(table, propname); |
| |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__set_rev_prop(svn_fs_t *fs, |
| svn_revnum_t rev, |
| const char *name, |
| const svn_string_t *const *old_value_p, |
| const svn_string_t *value, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| const char *txn_id; |
| const svn_string_t *present_value; |
| |
| SVN_ERR(get_rev_txn(&txn, &txn_id, fs, rev, trail, pool)); |
| present_value = svn_hash_gets(txn->proplist, name); |
| |
| /* If there's no proplist, but we're just deleting a property, exit now. */ |
| if ((! txn->proplist) && (! value)) |
| return SVN_NO_ERROR; |
| |
| /* Now, if there's no proplist, we know we need to make one. */ |
| if (! txn->proplist) |
| txn->proplist = apr_hash_make(pool); |
| |
| /* Set the property. */ |
| if (old_value_p) |
| { |
| const svn_string_t *wanted_value = *old_value_p; |
| if ((!wanted_value != !present_value) |
| || (wanted_value && present_value |
| && !svn_string_compare(wanted_value, present_value))) |
| { |
| /* What we expected isn't what we found. */ |
| return svn_error_createf(SVN_ERR_FS_PROP_BASEVALUE_MISMATCH, NULL, |
| _("revprop '%s' has unexpected value in " |
| "filesystem"), |
| name); |
| } |
| /* Fall through. */ |
| } |
| |
| /* If the prop-set is a no-op, skip the actual write. */ |
| if ((!present_value && !value) |
| || (present_value && value |
| && svn_string_compare(present_value, value))) |
| return SVN_NO_ERROR; |
| |
| svn_hash_sets(txn->proplist, name, value); |
| |
| /* Overwrite the revision. */ |
| return put_txn(fs, txn, txn_id, trail, pool); |
| } |
| |
| |
| struct change_rev_prop_args { |
| svn_revnum_t rev; |
| const char *name; |
| const svn_string_t *const *old_value_p; |
| const svn_string_t *value; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_change_rev_prop(void *baton, trail_t *trail) |
| { |
| struct change_rev_prop_args *args = baton; |
| |
| return svn_fs_base__set_rev_prop(trail->fs, args->rev, |
| args->name, args->old_value_p, args->value, |
| trail, trail->pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__change_rev_prop(svn_fs_t *fs, |
| svn_revnum_t rev, |
| const char *name, |
| const svn_string_t *const *old_value_p, |
| const svn_string_t *value, |
| apr_pool_t *pool) |
| { |
| struct change_rev_prop_args args; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| args.rev = rev; |
| args.name = name; |
| args.old_value_p = old_value_p; |
| args.value = value; |
| return svn_fs_base__retry_txn(fs, txn_body_change_rev_prop, &args, |
| TRUE, pool); |
| } |
| |
| |
| |
| /*** Transactions ***/ |
| |
| svn_error_t * |
| svn_fs_base__txn_make_committed(svn_fs_t *fs, |
| const char *txn_name, |
| svn_revnum_t revision, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| |
| SVN_ERR_ASSERT(SVN_IS_VALID_REVNUM(revision)); |
| |
| /* Make sure the TXN is not committed already. */ |
| SVN_ERR(get_txn(&txn, fs, txn_name, FALSE, trail, pool)); |
| if (txn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(fs, txn_name); |
| |
| /* Convert TXN to a committed transaction. */ |
| txn->base_id = NULL; |
| txn->revision = revision; |
| txn->kind = transaction_kind_committed; |
| return put_txn(fs, txn, txn_name, trail, pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__txn_get_revision(svn_revnum_t *revision, |
| svn_fs_t *fs, |
| const char *txn_name, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| SVN_ERR(get_txn(&txn, fs, txn_name, FALSE, trail, pool)); |
| *revision = txn->revision; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__get_txn_ids(const svn_fs_id_t **root_id_p, |
| const svn_fs_id_t **base_root_id_p, |
| svn_fs_t *fs, |
| const char *txn_name, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| |
| SVN_ERR(get_txn(&txn, fs, txn_name, FALSE, trail, pool)); |
| if (txn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(fs, txn_name); |
| |
| *root_id_p = txn->root_id; |
| *base_root_id_p = txn->base_id; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__set_txn_root(svn_fs_t *fs, |
| const char *txn_name, |
| const svn_fs_id_t *new_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| |
| SVN_ERR(get_txn(&txn, fs, txn_name, FALSE, trail, pool)); |
| if (txn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(fs, txn_name); |
| |
| if (! svn_fs_base__id_eq(txn->root_id, new_id)) |
| { |
| txn->root_id = new_id; |
| SVN_ERR(put_txn(fs, txn, txn_name, trail, pool)); |
| } |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__set_txn_base(svn_fs_t *fs, |
| const char *txn_name, |
| const svn_fs_id_t *new_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| |
| SVN_ERR(get_txn(&txn, fs, txn_name, FALSE, trail, pool)); |
| if (txn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(fs, txn_name); |
| |
| if (! svn_fs_base__id_eq(txn->base_id, new_id)) |
| { |
| txn->base_id = new_id; |
| SVN_ERR(put_txn(fs, txn, txn_name, trail, pool)); |
| } |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__add_txn_copy(svn_fs_t *fs, |
| const char *txn_name, |
| const char *copy_id, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| |
| /* Get the transaction and ensure its mutability. */ |
| SVN_ERR(get_txn(&txn, fs, txn_name, FALSE, trail, pool)); |
| if (txn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(fs, txn_name); |
| |
| /* Allocate a new array if this transaction has no copies. */ |
| if (! txn->copies) |
| txn->copies = apr_array_make(pool, 1, sizeof(copy_id)); |
| |
| /* Add COPY_ID to the array. */ |
| APR_ARRAY_PUSH(txn->copies, const char *) = copy_id; |
| |
| /* Finally, write out the transaction. */ |
| return put_txn(fs, txn, txn_name, trail, pool); |
| } |
| |
| |
| |
| /* Generic transaction operations. */ |
| |
| struct txn_proplist_args { |
| apr_hash_t **table_p; |
| const char *id; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_txn_proplist(void *baton, trail_t *trail) |
| { |
| transaction_t *txn; |
| struct txn_proplist_args *args = baton; |
| |
| SVN_ERR(get_txn(&txn, trail->fs, args->id, FALSE, trail, trail->pool)); |
| if (txn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(trail->fs, args->id); |
| |
| *(args->table_p) = txn->proplist; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| |
| svn_error_t * |
| svn_fs_base__txn_proplist_in_trail(apr_hash_t **table_p, |
| const char *txn_id, |
| trail_t *trail) |
| { |
| struct txn_proplist_args args; |
| apr_hash_t *table; |
| |
| args.table_p = &table; |
| args.id = txn_id; |
| SVN_ERR(txn_body_txn_proplist(&args, trail)); |
| |
| *table_p = table ? table : apr_hash_make(trail->pool); |
| return SVN_NO_ERROR; |
| } |
| |
| |
| |
| svn_error_t * |
| svn_fs_base__txn_proplist(apr_hash_t **table_p, |
| svn_fs_txn_t *txn, |
| apr_pool_t *pool) |
| { |
| struct txn_proplist_args args; |
| apr_hash_t *table; |
| svn_fs_t *fs = txn->fs; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| args.table_p = &table; |
| args.id = txn->id; |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_txn_proplist, &args, |
| FALSE, pool)); |
| |
| *table_p = table ? table : apr_hash_make(pool); |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__txn_prop(svn_string_t **value_p, |
| svn_fs_txn_t *txn, |
| const char *propname, |
| apr_pool_t *pool) |
| { |
| struct txn_proplist_args args; |
| apr_hash_t *table; |
| svn_fs_t *fs = txn->fs; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| /* Get the proplist. */ |
| args.table_p = &table; |
| args.id = txn->id; |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_txn_proplist, &args, |
| FALSE, pool)); |
| |
| /* And then the prop from that list (if there was a list). */ |
| *value_p = svn_hash_gets(table, propname); |
| |
| return SVN_NO_ERROR; |
| } |
| |
| |
| |
| struct change_txn_prop_args { |
| svn_fs_t *fs; |
| const char *id; |
| const char *name; |
| const svn_string_t *value; |
| }; |
| |
| |
| svn_error_t * |
| svn_fs_base__set_txn_prop(svn_fs_t *fs, |
| const char *txn_name, |
| const char *name, |
| const svn_string_t *value, |
| trail_t *trail, |
| apr_pool_t *pool) |
| { |
| transaction_t *txn; |
| |
| SVN_ERR(get_txn(&txn, fs, txn_name, FALSE, trail, pool)); |
| if (txn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(fs, txn_name); |
| |
| /* If there's no proplist, but we're just deleting a property, exit now. */ |
| if ((! txn->proplist) && (! value)) |
| return SVN_NO_ERROR; |
| |
| /* Now, if there's no proplist, we know we need to make one. */ |
| if (! txn->proplist) |
| txn->proplist = apr_hash_make(pool); |
| |
| /* Set the property. */ |
| if (svn_hash_gets(txn->proplist, SVN_FS__PROP_TXN_CLIENT_DATE) |
| && !strcmp(name, SVN_PROP_REVISION_DATE)) |
| svn_hash_sets(txn->proplist, SVN_FS__PROP_TXN_CLIENT_DATE, |
| svn_string_create("1", pool)); |
| svn_hash_sets(txn->proplist, name, value); |
| |
| /* Now overwrite the transaction. */ |
| return put_txn(fs, txn, txn_name, trail, pool); |
| } |
| |
| |
| static svn_error_t * |
| txn_body_change_txn_prop(void *baton, trail_t *trail) |
| { |
| struct change_txn_prop_args *args = baton; |
| return svn_fs_base__set_txn_prop(trail->fs, args->id, args->name, |
| args->value, trail, trail->pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__change_txn_prop(svn_fs_txn_t *txn, |
| const char *name, |
| const svn_string_t *value, |
| apr_pool_t *pool) |
| { |
| struct change_txn_prop_args args; |
| svn_fs_t *fs = txn->fs; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| args.id = txn->id; |
| args.name = name; |
| args.value = value; |
| return svn_fs_base__retry_txn(fs, txn_body_change_txn_prop, &args, |
| TRUE, pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__change_txn_props(svn_fs_txn_t *txn, |
| const apr_array_header_t *props, |
| apr_pool_t *pool) |
| { |
| apr_pool_t *iterpool = svn_pool_create(pool); |
| int i; |
| |
| for (i = 0; i < props->nelts; i++) |
| { |
| svn_prop_t *prop = &APR_ARRAY_IDX(props, i, svn_prop_t); |
| |
| svn_pool_clear(iterpool); |
| |
| SVN_ERR(svn_fs_base__change_txn_prop(txn, prop->name, |
| prop->value, iterpool)); |
| } |
| svn_pool_destroy(iterpool); |
| |
| return SVN_NO_ERROR; |
| } |
| |
| |
| /* Creating a transaction */ |
| |
| static txn_vtable_t txn_vtable = { |
| svn_fs_base__commit_txn, |
| svn_fs_base__abort_txn, |
| svn_fs_base__txn_prop, |
| svn_fs_base__txn_proplist, |
| svn_fs_base__change_txn_prop, |
| svn_fs_base__txn_root, |
| svn_fs_base__change_txn_props |
| }; |
| |
| |
| /* Allocate and return a new transaction object in POOL for FS whose |
| transaction ID is ID. ID is not copied. */ |
| static svn_fs_txn_t * |
| make_txn(svn_fs_t *fs, |
| const char *id, |
| svn_revnum_t base_rev, |
| apr_pool_t *pool) |
| { |
| svn_fs_txn_t *txn = apr_pcalloc(pool, sizeof(*txn)); |
| |
| txn->fs = fs; |
| txn->id = id; |
| txn->base_rev = base_rev; |
| txn->vtable = &txn_vtable; |
| txn->fsap_data = NULL; |
| |
| return txn; |
| } |
| |
| |
| struct begin_txn_args |
| { |
| svn_fs_txn_t **txn_p; |
| svn_revnum_t base_rev; |
| apr_uint32_t flags; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_begin_txn(void *baton, trail_t *trail) |
| { |
| struct begin_txn_args *args = baton; |
| const svn_fs_id_t *root_id; |
| const char *txn_id; |
| |
| SVN_ERR(svn_fs_base__rev_get_root(&root_id, trail->fs, args->base_rev, |
| trail, trail->pool)); |
| SVN_ERR(svn_fs_bdb__create_txn(&txn_id, trail->fs, root_id, |
| trail, trail->pool)); |
| |
| if (args->flags & SVN_FS_TXN_CHECK_OOD) |
| { |
| struct change_txn_prop_args cpargs; |
| cpargs.fs = trail->fs; |
| cpargs.id = txn_id; |
| cpargs.name = SVN_FS__PROP_TXN_CHECK_OOD; |
| cpargs.value = svn_string_create("true", trail->pool); |
| |
| SVN_ERR(txn_body_change_txn_prop(&cpargs, trail)); |
| } |
| |
| if (args->flags & SVN_FS_TXN_CHECK_LOCKS) |
| { |
| struct change_txn_prop_args cpargs; |
| cpargs.fs = trail->fs; |
| cpargs.id = txn_id; |
| cpargs.name = SVN_FS__PROP_TXN_CHECK_LOCKS; |
| cpargs.value = svn_string_create("true", trail->pool); |
| |
| SVN_ERR(txn_body_change_txn_prop(&cpargs, trail)); |
| } |
| |
| /* Put a datestamp on the newly created txn, so we always know |
| exactly how old it is. (This will help sysadmins identify |
| long-abandoned txns that may need to be manually removed.) Do |
| this before setting CLIENT_DATE so that it is not recorded as an |
| explicit setting. */ |
| { |
| struct change_txn_prop_args cpargs; |
| svn_string_t date; |
| cpargs.fs = trail->fs; |
| cpargs.id = txn_id; |
| cpargs.name = SVN_PROP_REVISION_DATE; |
| date.data = svn_time_to_cstring(apr_time_now(), trail->pool); |
| date.len = strlen(date.data); |
| cpargs.value = &date; |
| SVN_ERR(txn_body_change_txn_prop(&cpargs, trail)); |
| } |
| |
| if (args->flags & SVN_FS_TXN_CLIENT_DATE) |
| { |
| struct change_txn_prop_args cpargs; |
| cpargs.fs = trail->fs; |
| cpargs.id = txn_id; |
| cpargs.name = SVN_FS__PROP_TXN_CLIENT_DATE; |
| cpargs.value = svn_string_create("0", trail->pool); |
| |
| SVN_ERR(txn_body_change_txn_prop(&cpargs, trail)); |
| } |
| |
| *args->txn_p = make_txn(trail->fs, txn_id, args->base_rev, trail->pool); |
| return SVN_NO_ERROR; |
| } |
| |
| /* Note: it is acceptable for this function to call back into |
| public FS API interfaces because it does not itself use trails. */ |
| svn_error_t * |
| svn_fs_base__begin_txn(svn_fs_txn_t **txn_p, |
| svn_fs_t *fs, |
| svn_revnum_t rev, |
| apr_uint32_t flags, |
| apr_pool_t *pool) |
| { |
| svn_fs_txn_t *txn; |
| struct begin_txn_args args; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| args.txn_p = &txn; |
| args.base_rev = rev; |
| args.flags = flags; |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_begin_txn, &args, FALSE, pool)); |
| |
| *txn_p = txn; |
| |
| return SVN_NO_ERROR; |
| } |
| |
| |
| struct open_txn_args |
| { |
| svn_fs_txn_t **txn_p; |
| const char *name; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_open_txn(void *baton, trail_t *trail) |
| { |
| struct open_txn_args *args = baton; |
| transaction_t *fstxn; |
| svn_revnum_t base_rev = SVN_INVALID_REVNUM; |
| const char *txn_id; |
| |
| SVN_ERR(get_txn(&fstxn, trail->fs, args->name, FALSE, trail, trail->pool)); |
| if (fstxn->kind != transaction_kind_committed) |
| { |
| txn_id = svn_fs_base__id_txn_id(fstxn->base_id); |
| SVN_ERR(svn_fs_base__txn_get_revision(&base_rev, trail->fs, txn_id, |
| trail, trail->pool)); |
| } |
| |
| *args->txn_p = make_txn(trail->fs, args->name, base_rev, trail->pool); |
| return SVN_NO_ERROR; |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__open_txn(svn_fs_txn_t **txn_p, |
| svn_fs_t *fs, |
| const char *name, |
| apr_pool_t *pool) |
| { |
| svn_fs_txn_t *txn; |
| struct open_txn_args args; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| args.txn_p = &txn; |
| args.name = name; |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_open_txn, &args, FALSE, pool)); |
| |
| *txn_p = txn; |
| return SVN_NO_ERROR; |
| } |
| |
| |
| struct cleanup_txn_args |
| { |
| transaction_t **txn_p; |
| const char *name; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_cleanup_txn(void *baton, trail_t *trail) |
| { |
| struct cleanup_txn_args *args = baton; |
| return get_txn(args->txn_p, trail->fs, args->name, TRUE, |
| trail, trail->pool); |
| } |
| |
| |
| static svn_error_t * |
| txn_body_cleanup_txn_copy(void *baton, trail_t *trail) |
| { |
| const char *copy_id = *(const char **)baton; |
| svn_error_t *err = svn_fs_bdb__delete_copy(trail->fs, copy_id, trail, |
| trail->pool); |
| |
| /* Copy doesn't exist? No sweat. */ |
| if (err && (err->apr_err == SVN_ERR_FS_NO_SUCH_COPY)) |
| { |
| svn_error_clear(err); |
| err = SVN_NO_ERROR; |
| } |
| return svn_error_trace(err); |
| } |
| |
| |
| static svn_error_t * |
| txn_body_cleanup_txn_changes(void *baton, trail_t *trail) |
| { |
| const char *key = *(const char **)baton; |
| |
| return svn_fs_bdb__changes_delete(trail->fs, key, trail, trail->pool); |
| } |
| |
| |
| struct get_dirents_args |
| { |
| apr_hash_t **dirents; |
| const svn_fs_id_t *id; |
| const char *txn_id; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_get_dirents(void *baton, trail_t *trail) |
| { |
| struct get_dirents_args *args = baton; |
| dag_node_t *node; |
| |
| /* Get the node. */ |
| SVN_ERR(svn_fs_base__dag_get_node(&node, trail->fs, args->id, |
| trail, trail->pool)); |
| |
| /* If immutable, do nothing and return. */ |
| if (! svn_fs_base__dag_check_mutable(node, args->txn_id)) |
| return SVN_NO_ERROR; |
| |
| /* If a directory, do nothing and return. */ |
| *(args->dirents) = NULL; |
| if (svn_fs_base__dag_node_kind(node) != svn_node_dir) |
| return SVN_NO_ERROR; |
| |
| /* Else it's mutable. Get its dirents. */ |
| return svn_fs_base__dag_dir_entries(args->dirents, node, |
| trail, trail->pool); |
| } |
| |
| |
| struct remove_node_args |
| { |
| const svn_fs_id_t *id; |
| const char *txn_id; |
| }; |
| |
| |
| static svn_error_t * |
| txn_body_remove_node(void *baton, trail_t *trail) |
| { |
| struct remove_node_args *args = baton; |
| return svn_fs_base__dag_remove_node(trail->fs, args->id, args->txn_id, |
| trail, trail->pool); |
| } |
| |
| |
| static svn_error_t * |
| delete_txn_tree(svn_fs_t *fs, |
| const svn_fs_id_t *id, |
| const char *txn_id, |
| apr_pool_t *pool) |
| { |
| struct get_dirents_args dirent_args; |
| struct remove_node_args rm_args; |
| apr_hash_t *dirents = NULL; |
| apr_hash_index_t *hi; |
| svn_error_t *err; |
| |
| /* If this sucker isn't mutable, there's nothing to do. */ |
| if (strcmp(svn_fs_base__id_txn_id(id), txn_id) != 0) |
| return SVN_NO_ERROR; |
| |
| /* See if the thing has dirents that need to be recursed upon. If |
| you can't find the thing itself, don't sweat it. We probably |
| already cleaned it up. */ |
| dirent_args.dirents = &dirents; |
| dirent_args.id = id; |
| dirent_args.txn_id = txn_id; |
| err = svn_fs_base__retry_txn(fs, txn_body_get_dirents, &dirent_args, |
| FALSE, pool); |
| if (err && (err->apr_err == SVN_ERR_FS_ID_NOT_FOUND)) |
| { |
| svn_error_clear(err); |
| return SVN_NO_ERROR; |
| } |
| SVN_ERR(err); |
| |
| /* If there are dirents upon which to recurse ... recurse. */ |
| if (dirents) |
| { |
| apr_pool_t *subpool = svn_pool_create(pool); |
| |
| /* Loop over hash entries */ |
| for (hi = apr_hash_first(pool, dirents); hi; hi = apr_hash_next(hi)) |
| { |
| void *val; |
| svn_fs_dirent_t *dirent; |
| |
| svn_pool_clear(subpool); |
| apr_hash_this(hi, NULL, NULL, &val); |
| dirent = val; |
| SVN_ERR(delete_txn_tree(fs, dirent->id, txn_id, subpool)); |
| } |
| svn_pool_destroy(subpool); |
| } |
| |
| /* Remove the node. */ |
| rm_args.id = id; |
| rm_args.txn_id = txn_id; |
| return svn_fs_base__retry_txn(fs, txn_body_remove_node, &rm_args, |
| TRUE, pool); |
| } |
| |
| |
| static svn_error_t * |
| txn_body_delete_txn(void *baton, trail_t *trail) |
| { |
| const char *txn_id = *(const char **)baton; |
| |
| return svn_fs_bdb__delete_txn(trail->fs, txn_id, trail, trail->pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__purge_txn(svn_fs_t *fs, |
| const char *txn_id, |
| apr_pool_t *pool) |
| { |
| struct cleanup_txn_args args; |
| transaction_t *txn; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| /* Open the transaction, expecting it to be dead. */ |
| args.txn_p = &txn; |
| args.name = txn_id; |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_cleanup_txn, &args, |
| FALSE, pool)); |
| |
| /* Delete the mutable portion of the tree hanging from the |
| transaction (which should gracefully recover if we've already |
| done this). */ |
| SVN_ERR(delete_txn_tree(fs, txn->root_id, txn_id, pool)); |
| |
| /* Kill the transaction's changes (which should gracefully recover |
| if...). */ |
| SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_cleanup_txn_changes, |
| &txn_id, TRUE, pool)); |
| |
| /* Kill the transaction's copies (which should gracefully...). */ |
| if (txn->copies) |
| { |
| int i; |
| |
| for (i = 0; i < txn->copies->nelts; i++) |
| { |
| SVN_ERR(svn_fs_base__retry_txn |
| (fs, txn_body_cleanup_txn_copy, |
| &APR_ARRAY_IDX(txn->copies, i, const char *), |
| TRUE, pool)); |
| } |
| } |
| |
| /* Kill the transaction itself (which ... just kidding -- this has |
| no graceful failure mode). */ |
| return svn_fs_base__retry_txn(fs, txn_body_delete_txn, &txn_id, |
| TRUE, pool); |
| } |
| |
| |
| static svn_error_t * |
| txn_body_abort_txn(void *baton, trail_t *trail) |
| { |
| svn_fs_txn_t *txn = baton; |
| transaction_t *fstxn; |
| |
| /* Get the transaction by its id, set it to "dead", and store the |
| transaction. */ |
| SVN_ERR(get_txn(&fstxn, txn->fs, txn->id, FALSE, trail, trail->pool)); |
| if (fstxn->kind != transaction_kind_normal) |
| return svn_fs_base__err_txn_not_mutable(txn->fs, txn->id); |
| |
| fstxn->kind = transaction_kind_dead; |
| return put_txn(txn->fs, fstxn, txn->id, trail, trail->pool); |
| } |
| |
| |
| svn_error_t * |
| svn_fs_base__abort_txn(svn_fs_txn_t *txn, |
| apr_pool_t *pool) |
| { |
| SVN_ERR(svn_fs__check_fs(txn->fs, TRUE)); |
| |
| /* Set the transaction to "dead". */ |
| SVN_ERR(svn_fs_base__retry_txn(txn->fs, txn_body_abort_txn, txn, |
| TRUE, pool)); |
| |
| /* Now, purge it. */ |
| SVN_ERR_W(svn_fs_base__purge_txn(txn->fs, txn->id, pool), |
| _("Transaction aborted, but cleanup failed")); |
| |
| return SVN_NO_ERROR; |
| } |
| |
| |
| struct list_transactions_args |
| { |
| apr_array_header_t **names_p; |
| apr_pool_t *pool; |
| }; |
| |
| static svn_error_t * |
| txn_body_list_transactions(void* baton, trail_t *trail) |
| { |
| struct list_transactions_args *args = baton; |
| return svn_fs_bdb__get_txn_list(args->names_p, trail->fs, |
| trail, args->pool); |
| } |
| |
| svn_error_t * |
| svn_fs_base__list_transactions(apr_array_header_t **names_p, |
| svn_fs_t *fs, |
| apr_pool_t *pool) |
| { |
| apr_array_header_t *names; |
| struct list_transactions_args args; |
| |
| SVN_ERR(svn_fs__check_fs(fs, TRUE)); |
| |
| args.names_p = &names; |
| args.pool = pool; |
| SVN_ERR(svn_fs_base__retry(fs, txn_body_list_transactions, &args, |
| FALSE, pool)); |
| |
| *names_p = names; |
| return SVN_NO_ERROR; |
| } |