diff options
Diffstat (limited to 'contrib/subversion/subversion/libsvn_fs_base/revs-txns.c')
| -rw-r--r-- | contrib/subversion/subversion/libsvn_fs_base/revs-txns.c | 1102 |
1 files changed, 0 insertions, 1102 deletions
diff --git a/contrib/subversion/subversion/libsvn_fs_base/revs-txns.c b/contrib/subversion/subversion/libsvn_fs_base/revs-txns.c deleted file mode 100644 index 2ee65455d7d5..000000000000 --- a/contrib/subversion/subversion/libsvn_fs_base/revs-txns.c +++ /dev/null @@ -1,1102 +0,0 @@ -/* 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; -} |