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455147a360
apr_dbm does not provide thread-safe locking: * modules/dav/fs/mod_dav_fs.c (dav_fs_get_server_conf): Replaces dav_get_lockdb_path. (dav_fs_pre_config, dav_fs_child_init): New hooks. (dav_fs_post_config): Create & store the mutex here. (register_hooks): Register new hooks. * modules/dav/fs/repos.h: Expose new dav_fs_server_conf struct. * modules/dav/fs/lock.c (dav_fs_lockdb_cleanup): New cleanup which unlocks and closes the dbm handle. (dav_fs_really_open_lockdb): Lock the mutex here, register a cleanup. (dav_fs_open_lockdb): Adjust to use dav_fs_get_server_conf. (dav_fs_close_lockdb): Run the cleanup here. Github: closes #395 git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1914438 13f79535-47bb-0310-9956-ffa450edef68
119 lines
4.7 KiB
C
119 lines
4.7 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file repos.h
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* @brief Declarations for the filesystem repository implementation
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*
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* @addtogroup MOD_DAV
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* @{
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*/
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#ifndef _DAV_FS_REPOS_H_
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#define _DAV_FS_REPOS_H_
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#include "util_mutex.h"
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/* the subdirectory to hold all DAV-related information for a directory */
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#define DAV_FS_STATE_DIR ".DAV"
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#define DAV_FS_STATE_FILE_FOR_DIR ".state_for_dir"
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#define DAV_FS_LOCK_NULL_FILE ".locknull"
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#define DAV_FS_TMP_PREFIX ".davfs.tmp" /* prefix for tmp files */
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#define DAV_FS_QUOTA_UNSET 0
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#define DAV_FS_QUOTA_OFF -1
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#define DAV_FS_QUOTA_NONE -2
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#define DAV_FS_BYTES_ERROR -1
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/* ensure that our state subdirectory is present */
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void dav_fs_ensure_state_dir(apr_pool_t *p, const char *dirname);
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/* return the storage pool associated with a resource */
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apr_pool_t *dav_fs_pool(const dav_resource *resource);
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/* return the full pathname for a resource */
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const char *dav_fs_pathname(const dav_resource *resource);
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/* same as dav_fs_pathname() with directories' trailing slash */
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const char *dav_fs_fname(const dav_resource *resource);
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/* return the size for a resource, -1 if unknown */
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apr_off_t dav_fs_size(const dav_resource *resource);
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/* return the directory and filename for a resource */
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dav_error * dav_fs_dir_file_name(const dav_resource *resource,
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const char **dirpath,
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const char **fname);
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/* return the list of locknull members in this resource's directory */
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dav_error * dav_fs_get_locknull_members(const dav_resource *resource,
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dav_buffer *pbuf);
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/* DBM functions used by the repository and locking providers */
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extern const dav_hooks_db dav_hooks_db_dbm;
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dav_error * dav_dbm_open_direct(apr_pool_t *p, const char *pathname,
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const char *dbmtype, int ro, dav_db **pdb);
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void dav_dbm_get_statefiles(apr_pool_t *p, const char *fname,
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const char **state1, const char **state2);
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dav_error * dav_dbm_delete(dav_db *db, apr_datum_t key);
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dav_error * dav_dbm_store(dav_db *db, apr_datum_t key, apr_datum_t value);
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dav_error * dav_dbm_fetch(dav_db *db, apr_datum_t key, apr_datum_t *pvalue);
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void dav_dbm_freedatum(dav_db *db, apr_datum_t data);
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int dav_dbm_exists(dav_db *db, apr_datum_t key);
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void dav_dbm_close(dav_db *db);
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/* Per-server configuration. */
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typedef struct {
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const char *lockdb_path;
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const char *lockdb_type;
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apr_global_mutex_t *lockdb_mutex;
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} dav_fs_server_conf;
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/* Returns server configuration for the request. */
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const dav_fs_server_conf *dav_fs_get_server_conf(const request_rec *r);
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dav_error *dav_fs_get_quota(const request_rec *r, const char *path,
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apr_off_t *quota_bytes);
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apr_off_t dav_fs_get_used_bytes(request_rec *r, const char *path);
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apr_off_t dav_fs_get_available_bytes(request_rec *r,
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const char *path, int *fs_low);
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const dav_hooks_locks *dav_fs_get_lock_hooks(request_rec *r);
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const dav_hooks_propdb *dav_fs_get_propdb_hooks(request_rec *r);
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void dav_fs_gather_propsets(apr_array_header_t *uris);
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int dav_fs_find_liveprop(const dav_resource *resource,
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const char *ns_uri, const char *name,
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const dav_hooks_liveprop **hooks);
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void dav_fs_insert_all_liveprops(request_rec *r, const dav_resource *resource,
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dav_prop_insert what, apr_text_header *phdr);
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int dav_fs_quota_precondition(request_rec *r,
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dav_resource *src, const dav_resource *dst,
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const apr_xml_doc *doc, dav_error **err);
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int dav_fs_method_precondition(request_rec *r,
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dav_resource *src, const dav_resource *dst,
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const apr_xml_doc *doc, dav_error **err);
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void dav_fs_register(apr_pool_t *p);
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#endif /* _DAV_FS_REPOS_H_ */
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/** @} */
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