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Diffstat (limited to '')
| -rw-r--r-- | src/knot/conf/confio.h | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/src/knot/conf/confio.h b/src/knot/conf/confio.h new file mode 100644 index 0000000..be08e97 --- /dev/null +++ b/src/knot/conf/confio.h @@ -0,0 +1,231 @@ +/* Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#pragma once + +#include "knot/conf/conf.h" + +/*! Configuration schema additional flags for dynamic changes. */ +#define CONF_IO_FACTIVE YP_FUSR1 /*!< Active confio transaction indicator. */ +#define CONF_IO_FZONE YP_FUSR2 /*!< Zone section indicator. */ +#define CONF_IO_FREF YP_FUSR3 /*!< Possibly referenced id from a zone. */ +#define CONF_IO_FDIFF_ZONES YP_FUSR4 /*!< All zones config has changed. */ +#define CONF_IO_FCHECK_ZONES YP_FUSR5 /*!< All zones config needs to check. */ +#define CONF_IO_FRLD_SRV YP_FUSR6 /*!< Reload server. */ +#define CONF_IO_FRLD_LOG YP_FUSR7 /*!< Reload logging. */ +#define CONF_IO_FRLD_MOD YP_FUSR8 /*!< Reload global modules. */ +#define CONF_IO_FRLD_ZONE YP_FUSR9 /*!< Reload a specific zone. */ +#define CONF_IO_FRLD_ZONES YP_FUSR10 /*!< Reload all zones. */ +#define CONF_IO_FRLD_ALL (CONF_IO_FRLD_SRV | CONF_IO_FRLD_LOG | \ + CONF_IO_FRLD_MOD | CONF_IO_FRLD_ZONES) + +/*! Zone configuration change type. */ +typedef enum { + CONF_IO_TNONE = 0, /*!< Unspecified. */ + CONF_IO_TSET = 1 << 0, /*!< Zone added. */ + CONF_IO_TUNSET = 1 << 1, /*!< Zone removed. */ + CONF_IO_TCHANGE = 1 << 2, /*!< Zone has changed configuration. */ + CONF_IO_TRELOAD = 1 << 3, /*!< Zone must be reloaded. */ +} conf_io_type_t; + +/*! Configuration interface output. */ +typedef struct conf_io conf_io_t; +struct conf_io { + /*! Section. */ + const yp_item_t *key0; + /*! Section item. */ + const yp_item_t *key1; + /*! Section identifier. */ + const uint8_t *id; + /*! Section identifier length. */ + size_t id_len; + /*! Consider item identifier as item data. */ + bool id_as_data; + + enum { + /*! Default item state. */ + NONE, + /*! New item indicator. */ + NEW, + /*! Old item indicator. */ + OLD + } type; + + struct { + /*! Section item data (NULL if not used). */ + conf_val_t *val; + /*! Index of data value to format (counted from 1, 0 means all). */ + size_t index; + /*! Binary data value (NULL if not used). */ + const uint8_t *bin; + /*! Length of the binary data value. */ + size_t bin_len; + } data; + + struct { + /*! Edit operation return code. */ + int code; + /*! Edit operation return error message. */ + const char *str; + } error; + + /*! Optional processing callback. */ + int (*fcn)(conf_io_t *); + /*! Miscellaneous data useful for the callback. */ + void *misc; +}; + +inline static conf_io_type_t conf_io_trie_val(trie_it_t *it) +{ + return (conf_io_type_t)(uintptr_t)(*trie_it_val(it)); +} + +/*! + * Starts new writing transaction. + * + * \param[in] child Nested transaction indicator. + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_begin( + bool child +); + +/*! + * Commits the current writing transaction. + * + * \note Remember to call conf_refresh to publish the changes into the common + * configuration. + * + * \param[in] child Nested transaction indicator. + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_commit( + bool child +); + +/*! + * Aborts the current writing transaction. + * + * \param[in] child Nested transaction indicator. + */ +void conf_io_abort( + bool child +); + +/*! + * Gets the configuration sections list or section items list. + * + * \param[in] key0 Section name (NULL to get section list). + * \param[in] key1 Item name (non-NULL to get value list). + * \param[in] id Section identifier name if needed for value list. + * \param[in] list_schema List schema items or option values. + * \param[in] get_current The current configuration or the active transaction switch. + * \param[out] io Operation output. + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_list( + const char *key0, + const char *key1, + const char *id, + bool list_schema, + bool get_current, + conf_io_t *io +); + +/*! + * Gets the configuration difference between the current configuration and + * the active transaction. + * + * \param[in] key0 Section name (NULL to diff all sections). + * \param[in] key1 Item name (NULL to diff all section items). + * \param[in] id Section identifier name (NULL to consider all section identifiers). + * \param[out] io Operation output. + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_diff( + const char *key0, + const char *key1, + const char *id, + conf_io_t *io +); + +/*! + * Gets the configuration item(s) value(s). + * + * \param[in] key0 Section name (NULL to get all sections). + * \param[in] key1 Item name (NULL to get all section items). + * \param[in] id Section identifier name (NULL to consider all section identifiers). + * \param[in] get_current The current configuration or the active transaction switch. + * \param[out] io Operation output. + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_get( + const char *key0, + const char *key1, + const char *id, + bool get_current, + conf_io_t *io +); + +/*! + * Sets the configuration item(s) value. + * + * \param[in] key0 Section name. + * \param[in] key1 Item name (NULL to add identifier only). + * \param[in] id Section identifier name (NULL to consider all section identifiers). + * \param[in] data Item data to set/add. + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_set( + const char *key0, + const char *key1, + const char *id, + const char *data +); + +/*! + * Unsets the configuration item(s) value(s). + * + * \param[in] key0 Section name (NULL to unset all sections). + * \param[in] key1 Item name (NULL to unset the whole section). + * \param[in] id Section identifier name (NULL to consider all section identifiers). + * \param[in] data Item data (NULL to unset all data). + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_unset( + const char *key0, + const char *key1, + const char *id, + const char *data +); + +/*! + * Checks the configuration database semantics in the current writing transaction. + * + * \param[out] io Operation output. + * + * \return Error code, KNOT_EOK if success. + */ +int conf_io_check( + conf_io_t *io +); |