doc: document databases
Signed-off-by: Allan McRae <allan@archlinux.org>
This commit is contained in:
morganamilo
Allan McRae
parent
e9ac13776e
commit
55efa43f23
1 changed files with 249 additions and 219 deletions
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@ -93,6 +93,38 @@ typedef struct __alpm_pkg_t alpm_pkg_t;
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/** Transaction structure used internally by libalpm */
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/** Transaction structure used internally by libalpm */
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typedef struct __alpm_trans_t alpm_trans_t;
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typedef struct __alpm_trans_t alpm_trans_t;
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/*
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* Structures
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*/
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/** Package group */
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typedef struct _alpm_group_t {
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/** group name */
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char *name;
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/** list of alpm_pkg_t packages */
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alpm_list_t *packages;
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} alpm_group_t;
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/** File in a package */
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typedef struct _alpm_file_t {
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char *name;
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off_t size;
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mode_t mode;
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} alpm_file_t;
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/** Package filelist container */
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typedef struct _alpm_filelist_t {
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size_t count;
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alpm_file_t *files;
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} alpm_filelist_t;
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/** Local package or package file backup entry */
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typedef struct _alpm_backup_t {
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char *name;
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char *hash;
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} alpm_backup_t;
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/** @addtogroup alpm_api ALPM
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/** @addtogroup alpm_api ALPM
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* @brief The libalpm Public API
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* @brief The libalpm Public API
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@ -1122,6 +1154,223 @@ typedef int (*alpm_cb_fetch)(const char *url, const char *localpath,
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/** @} */
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/** @} */
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/** @addtogroup alpm_databases Database
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* @brief Functions to query and manipulate the database of libalpm.
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* @{
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*/
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/** Get the database of locally installed packages.
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* The returned pointer points to an internal structure
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* of libalpm which should only be manipulated through
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* libalpm functions.
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* @return a reference to the local database
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*/
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alpm_db_t *alpm_get_localdb(alpm_handle_t *handle);
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/** Get the list of sync databases.
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* Returns a list of alpm_db_t structures, one for each registered
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* sync database.
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*
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* @param handle the context handle
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* @return a reference to an internal list of alpm_db_t structures
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*/
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alpm_list_t *alpm_get_syncdbs(alpm_handle_t *handle);
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/** Register a sync database of packages.
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* Databases can not be registered when there is an active transaction.
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*
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* @param handle the context handle
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* @param treename the name of the sync repository
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* @param level what level of signature checking to perform on the
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* database; note that this must be a '.sig' file type verification
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* @return an alpm_db_t* on success (the value), NULL on error
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*/
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alpm_db_t *alpm_register_syncdb(alpm_handle_t *handle, const char *treename,
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int level);
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/** Unregister all package databases.
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* Databases can not be unregistered while there is an active transaction.
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*
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* @param handle the context handle
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int alpm_unregister_all_syncdbs(alpm_handle_t *handle);
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/** Unregister a package database.
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* Databases can not be unregistered when there is an active transaction.
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*
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* @param db pointer to the package database to unregister
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int alpm_db_unregister(alpm_db_t *db);
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/** Get the name of a package database.
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* @param db pointer to the package database
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* @return the name of the package database, NULL on error
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*/
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const char *alpm_db_get_name(const alpm_db_t *db);
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/** Get the signature verification level for a database.
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* Will return the default verification level if this database is set up
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* with ALPM_SIG_USE_DEFAULT.
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* @param db pointer to the package database
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* @return the signature verification level
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*/
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int alpm_db_get_siglevel(alpm_db_t *db);
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/** Check the validity of a database.
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* This is most useful for sync databases and verifying signature status.
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* If invalid, the handle error code will be set accordingly.
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* @param db pointer to the package database
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* @return 0 if valid, -1 if invalid (pm_errno is set accordingly)
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*/
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int alpm_db_get_valid(alpm_db_t *db);
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/** @name Server accessors
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* @{
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*/
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/** Get the list of servers assigned to this db.
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* @param db pointer to the database to get the servers from
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* @return a char* list of servers
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*/
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alpm_list_t *alpm_db_get_servers(const alpm_db_t *db);
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/** Sets the list of servers for the database to use.
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* @param db the database to set the servers
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* @param servers a char* list of servers. Note: the database will
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* take ownership of the list and it should no longer be
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* freed by the caller
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*/
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int alpm_db_set_servers(alpm_db_t *db, alpm_list_t *servers);
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/** Add a download server to a database.
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* @param db database pointer
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* @param url url of the server
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int alpm_db_add_server(alpm_db_t *db, const char *url);
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/** Remove a download server from a database.
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* @param db database pointer
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* @param url url of the server
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* @return 0 on success, 1 on server not present,
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* -1 on error (pm_errno is set accordingly)
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*/
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int alpm_db_remove_server(alpm_db_t *db, const char *url);
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/* End of server accessors */
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/** @} */
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/** Update package databases.
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*
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* An update of the package databases in the list \a dbs will be attempted.
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* Unless \a force is true, the update will only be performed if the remote
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* databases were modified since the last update.
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*
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* This operation requires a database lock, and will return an applicable error
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* if the lock could not be obtained.
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*
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* Example:
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* @code
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* alpm_list_t *dbs = alpm_get_syncdbs(config->handle);
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* ret = alpm_db_update(config->handle, dbs, force);
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* if(ret < 0) {
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* pm_printf(ALPM_LOG_ERROR, _("failed to synchronize all databases (%s)\n"),
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* alpm_strerror(alpm_errno(config->handle)));
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* }
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* @endcode
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*
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* @note After a successful update, the \link alpm_db_get_pkgcache()
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* package cache \endlink will be invalidated
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* @param handle the context handle
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* @param dbs list of package databases to update
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* @param force if true, then forces the update, otherwise update only in case
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* the databases aren't up to date
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int alpm_db_update(alpm_handle_t *handle, alpm_list_t *dbs, int force);
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/** Get a package entry from a package database.
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* Looking up a package is O(1) and will be significantly faster than
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* iterating over the pkgcahe.
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* @param db pointer to the package database to get the package from
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* @param name of the package
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* @return the package entry on success, NULL on error
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*/
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alpm_pkg_t *alpm_db_get_pkg(alpm_db_t *db, const char *name);
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/** Get the package cache of a package database.
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* This is a list of all packages the db contains.
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* @param db pointer to the package database to get the package from
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* @return the list of packages on success, NULL on error
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*/
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alpm_list_t *alpm_db_get_pkgcache(alpm_db_t *db);
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/** Get a group entry from a package database.
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* Looking up a group is O(1) and will be significantly faster than
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* iterating over the groupcahe.
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* @param db pointer to the package database to get the group from
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* @param name of the group
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* @return the groups entry on success, NULL on error
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*/
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alpm_group_t *alpm_db_get_group(alpm_db_t *db, const char *name);
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/** Get the group cache of a package database.
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* @param db pointer to the package database to get the group from
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* @return the list of groups on success, NULL on error
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*/
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alpm_list_t *alpm_db_get_groupcache(alpm_db_t *db);
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/** Searches a database with regular expressions.
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* @param db pointer to the package database to search in
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* @param needles a list of regular expressions to search for
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* @param ret pointer to list for storing packages matching all
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* regular expressions - must point to an empty (NULL) alpm_list_t *.
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int alpm_db_search(alpm_db_t *db, const alpm_list_t *needles,
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alpm_list_t **ret);
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/** The usage level of a database. */
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typedef enum _alpm_db_usage_t {
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/** Enable refreshes for this database */
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ALPM_DB_USAGE_SYNC = 1,
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/** Enable search for this database */
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ALPM_DB_USAGE_SEARCH = (1 << 1),
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/** Enable installing packages from this database */
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ALPM_DB_USAGE_INSTALL = (1 << 2),
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/** Enable sysupgrades with this database */
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ALPM_DB_USAGE_UPGRADE = (1 << 3),
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/** Enable all usage levels */
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ALPM_DB_USAGE_ALL = (1 << 4) - 1,
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} alpm_db_usage_t;
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/** @name Usage accessors
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* @{
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*/
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/** Sets the usage of a database.
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* @param db pointer to the package database to set the status for
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* @param usage a bitmask of alpm_db_usage_t values
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* @return 0 on success, or -1 on error
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*/
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int alpm_db_set_usage(alpm_db_t *db, int usage);
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/** Gets the usage of a database.
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* @param db pointer to the package database to get the status of
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* @param usage pointer to an alpm_db_usage_t to store db's status
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* @return 0 on success, or -1 on error
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*/
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int alpm_db_get_usage(alpm_db_t *db, int *usage);
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/* End of usage accessors */
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/** @} */
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/* End of alpm_databases */
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/** @} */
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/*
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/*
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* Enumerations
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* Enumerations
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* These ones are used in multiple contexts, so are forward-declared.
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* These ones are used in multiple contexts, so are forward-declared.
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@ -1151,37 +1400,6 @@ typedef enum _alpm_pkgvalidation_t {
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ALPM_PKG_VALIDATION_SIGNATURE = (1 << 3)
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ALPM_PKG_VALIDATION_SIGNATURE = (1 << 3)
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} alpm_pkgvalidation_t;
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} alpm_pkgvalidation_t;
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/*
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* Structures
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*/
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/** Package group */
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typedef struct _alpm_group_t {
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/** group name */
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char *name;
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/** list of alpm_pkg_t packages */
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alpm_list_t *packages;
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} alpm_group_t;
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/** File in a package */
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typedef struct _alpm_file_t {
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char *name;
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off_t size;
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mode_t mode;
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} alpm_file_t;
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/** Package filelist container */
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typedef struct _alpm_filelist_t {
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size_t count;
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alpm_file_t *files;
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} alpm_filelist_t;
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/** Local package or package file backup entry */
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typedef struct _alpm_backup_t {
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char *name;
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char *hash;
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} alpm_backup_t;
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/*
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/*
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* Logging facilities
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* Logging facilities
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*/
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*/
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@ -1404,194 +1622,6 @@ int alpm_option_set_parallel_downloads(alpm_handle_t *handle, unsigned int num_s
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/** @} */
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/** @} */
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/** @addtogroup alpm_api_databases Database Functions
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* Functions to query and manipulate the database of libalpm.
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* @{
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*/
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/** Get the database of locally installed packages.
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* The returned pointer points to an internal structure
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* of libalpm which should only be manipulated through
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* libalpm functions.
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* @return a reference to the local database
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*/
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alpm_db_t *alpm_get_localdb(alpm_handle_t *handle);
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/** Get the list of sync databases.
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* Returns a list of alpm_db_t structures, one for each registered
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* sync database.
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* @param handle the context handle
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* @return a reference to an internal list of alpm_db_t structures
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*/
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alpm_list_t *alpm_get_syncdbs(alpm_handle_t *handle);
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/** Register a sync database of packages.
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* @param handle the context handle
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* @param treename the name of the sync repository
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* @param level what level of signature checking to perform on the
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* database; note that this must be a '.sig' file type verification
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* @return an alpm_db_t* on success (the value), NULL on error
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*/
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alpm_db_t *alpm_register_syncdb(alpm_handle_t *handle, const char *treename,
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int level);
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/** Unregister all package databases.
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* @param handle the context handle
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int alpm_unregister_all_syncdbs(alpm_handle_t *handle);
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/** Unregister a package database.
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* @param db pointer to the package database to unregister
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int alpm_db_unregister(alpm_db_t *db);
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/** Get the name of a package database.
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* @param db pointer to the package database
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* @return the name of the package database, NULL on error
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*/
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const char *alpm_db_get_name(const alpm_db_t *db);
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/** Get the signature verification level for a database.
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* Will return the default verification level if this database is set up
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* with ALPM_SIG_USE_DEFAULT.
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* @param db pointer to the package database
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* @return the signature verification level
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*/
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int alpm_db_get_siglevel(alpm_db_t *db);
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/** Check the validity of a database.
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* This is most useful for sync databases and verifying signature status.
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* If invalid, the handle error code will be set accordingly.
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* @param db pointer to the package database
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* @return 0 if valid, -1 if invalid (pm_errno is set accordingly)
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*/
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int alpm_db_get_valid(alpm_db_t *db);
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||||||
/** @name Accessors to the list of servers for a database.
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
/** Get the list of servers assigned to this db.
|
|
||||||
* @param db pointer to the database to get the servers from
|
|
||||||
* @return a char* list of servers
|
|
||||||
*/
|
|
||||||
alpm_list_t *alpm_db_get_servers(const alpm_db_t *db);
|
|
||||||
|
|
||||||
/** Sets the list of servers for the database to use.
|
|
||||||
* @param db the database to set the servers
|
|
||||||
* @param a char* list of servers. Note: the database will
|
|
||||||
* take ownership of the list and it should no longer be
|
|
||||||
* freed by the caller
|
|
||||||
*/
|
|
||||||
int alpm_db_set_servers(alpm_db_t *db, alpm_list_t *servers);
|
|
||||||
|
|
||||||
/** Add a download server to a database.
|
|
||||||
* @param db database pointer
|
|
||||||
* @param url url of the server
|
|
||||||
* @return 0 on success, -1 on error (pm_errno is set accordingly)
|
|
||||||
*/
|
|
||||||
int alpm_db_add_server(alpm_db_t *db, const char *url);
|
|
||||||
|
|
||||||
/** Remove a download server from a database.
|
|
||||||
* @param db database pointer
|
|
||||||
* @param url url of the server
|
|
||||||
* @return 0 on success, 1 on server not present,
|
|
||||||
* -1 on error (pm_errno is set accordingly)
|
|
||||||
*/
|
|
||||||
int alpm_db_remove_server(alpm_db_t *db, const char *url);
|
|
||||||
/** @} */
|
|
||||||
|
|
||||||
/** Update package databases
|
|
||||||
*
|
|
||||||
* An update of the package databases in the list \a dbs will be attempted.
|
|
||||||
* Unless \a force is true, the update will only be performed if the remote
|
|
||||||
* databases were modified since the last update.
|
|
||||||
*
|
|
||||||
* This operation requires a database lock, and will return an applicable error
|
|
||||||
* if the lock could not be obtained.
|
|
||||||
*
|
|
||||||
* Example:
|
|
||||||
* @code
|
|
||||||
* alpm_list_t *dbs = alpm_get_syncdbs();
|
|
||||||
* ret = alpm_db_update(config->handle, dbs, force);
|
|
||||||
* if(ret < 0) {
|
|
||||||
* pm_printf(ALPM_LOG_ERROR, _("failed to synchronize all databases (%s)\n"),
|
|
||||||
* alpm_strerror(alpm_errno(config->handle)));
|
|
||||||
* }
|
|
||||||
* @endcode
|
|
||||||
*
|
|
||||||
* @note After a successful update, the \link alpm_db_get_pkgcache()
|
|
||||||
* package cache \endlink will be invalidated
|
|
||||||
* @param handle the context handle
|
|
||||||
* @param dbs list of package databases to update
|
|
||||||
* @param force if true, then forces the update, otherwise update only in case
|
|
||||||
* the databases aren't up to date
|
|
||||||
* @return 0 on success, -1 on error (pm_errno is set accordingly)
|
|
||||||
*/
|
|
||||||
int alpm_db_update(alpm_handle_t *handle, alpm_list_t *dbs, int force);
|
|
||||||
|
|
||||||
/** Get a package entry from a package database.
|
|
||||||
* @param db pointer to the package database to get the package from
|
|
||||||
* @param name of the package
|
|
||||||
* @return the package entry on success, NULL on error
|
|
||||||
*/
|
|
||||||
alpm_pkg_t *alpm_db_get_pkg(alpm_db_t *db, const char *name);
|
|
||||||
|
|
||||||
/** Get the package cache of a package database.
|
|
||||||
* @param db pointer to the package database to get the package from
|
|
||||||
* @return the list of packages on success, NULL on error
|
|
||||||
*/
|
|
||||||
alpm_list_t *alpm_db_get_pkgcache(alpm_db_t *db);
|
|
||||||
|
|
||||||
/** Get a group entry from a package database.
|
|
||||||
* @param db pointer to the package database to get the group from
|
|
||||||
* @param name of the group
|
|
||||||
* @return the groups entry on success, NULL on error
|
|
||||||
*/
|
|
||||||
alpm_group_t *alpm_db_get_group(alpm_db_t *db, const char *name);
|
|
||||||
|
|
||||||
/** Get the group cache of a package database.
|
|
||||||
* @param db pointer to the package database to get the group from
|
|
||||||
* @return the list of groups on success, NULL on error
|
|
||||||
*/
|
|
||||||
alpm_list_t *alpm_db_get_groupcache(alpm_db_t *db);
|
|
||||||
|
|
||||||
/** Searches a database with regular expressions.
|
|
||||||
* @param db pointer to the package database to search in
|
|
||||||
* @param needles a list of regular expressions to search for
|
|
||||||
* @param ret pointer to list for storing packages matching all
|
|
||||||
* regular expressions - must point to an empty (NULL) alpm_list_t *.
|
|
||||||
* @return 0 on success, -1 on error (pm_errno is set accordingly)
|
|
||||||
*/
|
|
||||||
int alpm_db_search(alpm_db_t *db, const alpm_list_t *needles,
|
|
||||||
alpm_list_t **ret);
|
|
||||||
|
|
||||||
typedef enum _alpm_db_usage_t {
|
|
||||||
ALPM_DB_USAGE_SYNC = 1,
|
|
||||||
ALPM_DB_USAGE_SEARCH = (1 << 1),
|
|
||||||
ALPM_DB_USAGE_INSTALL = (1 << 2),
|
|
||||||
ALPM_DB_USAGE_UPGRADE = (1 << 3),
|
|
||||||
ALPM_DB_USAGE_ALL = (1 << 4) - 1,
|
|
||||||
} alpm_db_usage_t;
|
|
||||||
|
|
||||||
/** Sets the usage of a database.
|
|
||||||
* @param db pointer to the package database to set the status for
|
|
||||||
* @param usage a bitmask of alpm_db_usage_t values
|
|
||||||
* @return 0 on success, or -1 on error
|
|
||||||
*/
|
|
||||||
int alpm_db_set_usage(alpm_db_t *db, int usage);
|
|
||||||
|
|
||||||
/** Gets the usage of a database.
|
|
||||||
* @param db pointer to the package database to get the status of
|
|
||||||
* @param usage pointer to an alpm_db_usage_t to store db's status
|
|
||||||
* @return 0 on success, or -1 on error
|
|
||||||
*/
|
|
||||||
int alpm_db_get_usage(alpm_db_t *db, int *usage);
|
|
||||||
|
|
||||||
/** @} */
|
|
||||||
|
|
||||||
/** @addtogroup alpm_api_packages Package Functions
|
/** @addtogroup alpm_api_packages Package Functions
|
||||||
* Functions to manipulate libalpm packages
|
* Functions to manipulate libalpm packages
|
||||||
* @{
|
* @{
|
||||||
|
|
|
||||||
Loading…
Add table
Reference in a new issue