le_cfgAdmin_interface.h

    1 
    2 
    3 /*
    4  * ====================== WARNING ======================
    5  *
    6  * THE CONTENTS OF THIS FILE HAVE BEEN AUTO-GENERATED.
    7  * DO NOT MODIFY IN ANY WAY.
    8  *
    9  * ====================== WARNING ======================
   10  */
   11 
   12 /**
   13  * @page c_configAdmin Config Tree Admin API
   14  *
   15  * @ref le_cfgAdmin_interface.h "API Reference"
   16  *
   17  * The Config Tree Admin API is intended to provide tools help with administration of Trees.  These
   18  * administration functions are provided as a separate API for security reasons. The Admin API needs
   19  * to be explicitly included to use these admin functions keeping access separate from the main app
   20  * permissions.
   21  *
   22  * The API includes the following functions:
   23  * - an iterator function to walk the current list of trees.
   24  * - an import function to bulk load the data (full or partial) into a tree.
   25  * - an export function to save the contents of a tree.
   26  * - a delete function to remove a tree and all its objects.
   27  *
   28  * Example of @b Iterating the List of Trees:
   29  *
   30  * @code
   31  * void ListTrees(void)
   32  * {
   33  *     // Open a tree iterator.  Note that this isn't the same iterator that you would be using for
   34  *     // read and write transactions.
   35  *     le_cfgAdmin_IteratorRef_t iteratorRef = le_cfgAdmin_CreateTreeIterator();
   36  *
   37  *     LE_INFO("Listing configuration Trees in the current system...");
   38  *
   39  *     // The iteratorRef starts at item -1, so we need to start with calling NextTree in our loop.
   40  *     while (le_cfgAdmin_NextTree(iteratorRef) == LE_OK)
   41  *     {
   42  *         // Simply extract the name of the tree and dump it to the device log.
   43  *         char treeName[MAX_TREE_NAME_BYTES] = "";
   44  *
   45  *         if (le_cfgAdmin_GetTreeName(iteratorRef, treeName, sizeof(treeName)) == LE_OK)
   46  *         {
   47  *             LE_INFO("Tree: '%s'", treeName);
   48  *         }
   49  *     }
   50  *
   51  *     // Again, this isn't a regular config node iterator, so you need to use the cfgAdmin
   52  *     // release on the tree iterator.
   53  *     le_cfgAdmin_ReleaseTreeIterator(iteratorRef);
   54  * }
   55  * @endcode
   56  *
   57  * Example of @b Importing a Tree:
   58  *
   59  * @code
   60  * void ImportMyTree(const char* filePath)
   61  * {
   62  *     static char resolvedPath[PATH_MAX] = "";
   63  *
   64  *     // Because the configTree is a seperate process, we need to make sure that the path we
   65  *     // received is an absolute path.
   66  *     LE_FATAL_IF(realpath(filePath, resolvedPath) == NULL, "Could not resolve filePath: %m");
   67  *
   68  *     // Open a write transaction on /myData, as we will be writing to the configTree.
   69  *     le_cfg_IteratorRef_t iteratorRef = le_cfg_CreateReadTxn("/myData");
   70  *
   71  *     // Our iterator is currently on /myData, so everything under that node is replaced.  If we
   72  *     // want to replace the whole tree we could supply a "/" here instead of using the iterator's
   73  *     // current location.  Alternativly, we could have opened or moved the iterator to "/" in the
   74  *     // first place.
   75  *     LE_FATAL_IF(le_cfgAdmin_ExportTree(iteratorRef, resolvedPath, "") != LE_OK,
   76  *                 "Error occured while writing config data.");
   77  *
   78  *     // Close up the iterator,free it's resources, and commit the new data to the configTree.
   79  *     le_cfg_CommitTxn(iteratorRef);
   80  * }
   81  *
   82  * // To import the config data back from ./myData.cfg:
   83  * ImportMyData("./myData.cfg");
   84  * @endcode
   85  *
   86  * Example of @b Exporting a Tree
   87  *
   88  * @code
   89  * void ExportMyData(const char* filePath)
   90  * {
   91  *     static char resolvedPath[PATH_MAX] = "";
   92  *
   93  *     // Because the configTree is a seperate process, we need to make sure that the path we
   94  *     // received is an absolute path.
   95  *     LE_FATAL_IF(realpath(filePath, resolvedPath) == NULL, "Could not resolve filePath: %m");
   96  *
   97  *     // Open a read transaction on /myData.
   98  *     le_cfg_IteratorRef_t iteratorRef = le_cfg_CreateReadTxn("/myData");
   99  *
  100  *     // Our iterator is currently on /myData, so everything under that node is exported.  If we
  101  *     // want to export the whole tree we could supply a "/" here instead of using the iterator's
  102  *     // current location.  Alternativly, we could have opened or moved the iterator to "/" in the
  103  *     // first place.
  104  *     LE_FATAL_IF(le_cfgAdmin_ExportTree(iteratorRef, resolvedPath, "") != LE_OK,
  105  *                 "Error occured while writing config data.");
  106  *
  107  *     // Close up the iterator and free it's resources.
  108  *     le_cfg_CancelTxn(iteratorRef);
  109  * }
  110  *
  111  * // To export the config tree to ./myData.cfg:
  112  * ExportMyData("./myData.cfg");
  113  * @endcode
  114  *
  115  * Example of @b Deleting a Tree
  116  *
  117  * @code
  118  * // To delete a tree simply call le_cfgAdmin_DeleteTree.  For example to delete the tree foo,
  119  * // call as follows:
  120  * le_cfgAdmin_DeleteTree("foo");
  121  * @endcode
  122  *
  123  * Copyright (C) Sierra Wireless Inc.
  124  */
  125 /**
  126  * @file le_cfgAdmin_interface.h
  127  *
  128  * Legato @ref c_configAdmin include file.
  129  *
  130  * Copyright (C) Sierra Wireless Inc.
  131  */
  132 
  133 #ifndef LE_CFGADMIN_INTERFACE_H_INCLUDE_GUARD
  134 #define LE_CFGADMIN_INTERFACE_H_INCLUDE_GUARD
  135 
  136 
  137 #include "legato.h"
  138 
  139 // Interface specific includes
  140 #include "le_cfg_interface.h"
  141 
  142 
  143 //--------------------------------------------------------------------------------------------------
  144 /**
  145  * Type for handler called when a server disconnects.
  146  */
  147 //--------------------------------------------------------------------------------------------------
  148 typedef void (*le_cfgAdmin_DisconnectHandler_t)(void *);
  149 
  150 //--------------------------------------------------------------------------------------------------
  151 /**
  152  *
  153  * Connect the current client thread to the service providing this API. Block until the service is
  154  * available.
  155  *
  156  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
  157  * called before any other functions in this API.  Normally, ConnectService is automatically called
  158  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
  159  *
  160  * This function is created automatically.
  161  */
  162 //--------------------------------------------------------------------------------------------------
  163 void le_cfgAdmin_ConnectService
  164 (
  165     void
  166 );
  167 
  168 //--------------------------------------------------------------------------------------------------
  169 /**
  170  *
  171  * Try to connect the current client thread to the service providing this API. Return with an error
  172  * if the service is not available.
  173  *
  174  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
  175  * called before any other functions in this API.  Normally, ConnectService is automatically called
  176  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
  177  *
  178  * This function is created automatically.
  179  *
  180  * @return
  181  *  - LE_OK if the client connected successfully to the service.
  182  *  - LE_UNAVAILABLE if the server is not currently offering the service to which the client is
  183  *    bound.
  184  *  - LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).
  185  *  - LE_COMM_ERROR if the Service Directory cannot be reached.
  186  */
  187 //--------------------------------------------------------------------------------------------------
  188 le_result_t le_cfgAdmin_TryConnectService
  189 (
  190     void
  191 );
  192 
  193 //--------------------------------------------------------------------------------------------------
  194 /**
  195  * Set handler called when server disconnection is detected.
  196  *
  197  * When a server connection is lost, call this handler then exit with LE_FATAL.  If a program wants
  198  * to continue without exiting, it should call longjmp() from inside the handler.
  199  */
  200 //--------------------------------------------------------------------------------------------------
  201 void le_cfgAdmin_SetServerDisconnectHandler
  202 (
  203     le_cfgAdmin_DisconnectHandler_t disconnectHandler,
  204     void *contextPtr
  205 );
  206 
  207 //--------------------------------------------------------------------------------------------------
  208 /**
  209  *
  210  * Disconnect the current client thread from the service providing this API.
  211  *
  212  * Normally, this function doesn't need to be called. After this function is called, there's no
  213  * longer a connection to the service, and the functions in this API can't be used. For details, see
  214  * @ref apiFilesC_client.
  215  *
  216  * This function is created automatically.
  217  */
  218 //--------------------------------------------------------------------------------------------------
  219 void le_cfgAdmin_DisconnectService
  220 (
  221     void
  222 );
  223 
  224 
  225 //--------------------------------------------------------------------------------------------------
  226 /**
  227  * Reference to an iterator object that can be used to iterate over the list of trees.
  228  */
  229 //--------------------------------------------------------------------------------------------------
  230 typedef struct le_cfgAdmin_Iterator* le_cfgAdmin_IteratorRef_t;
  231 
  232 
  233 //--------------------------------------------------------------------------------------------------
  234 /**
  235  * Read a subset of the configuration tree from the given filePath.  The tree then overwrites the
  236  * node at the given nodePath.
  237  *
  238  * This function will import a sub-tree as part of the iterator's current transaction.  This allows
  239  * you to create an iterator on a given node.  Import a sub-tree, and then examine the contents of
  240  * the import before deciding to commit the new data.
  241  *
  242  * @return This function will return one of the following values:
  243  *
  244  *         - LE_OK            - The commit was completed successfuly.
  245  *         - LE_FAULT         - An I/O error occured while reading the data.
  246  *         - LE_FORMAT_ERROR  - The configuration data being imported appears corrupted.
  247  */
  248 //--------------------------------------------------------------------------------------------------
  249 le_result_t le_cfgAdmin_ImportTree
  250 (
  251     le_cfg_IteratorRef_t iteratorRef,
  252         ///< [IN] Write iterator that is being used for the import.
  253     const char* LE_NONNULL filePath,
  254         ///< [IN] Import the tree data from the this file.
  255     const char* LE_NONNULL nodePath
  256         ///< [IN] Where in the tree should this import happen?  Leave
  257         ///<   as an empty string to use the iterator's current
  258         ///<   node.
  259 );
  260 
  261 //--------------------------------------------------------------------------------------------------
  262 /**
  263  * Take a node given from nodePath and stream it and it's children to the file given by filePath.
  264  *
  265  * This funciton uses the iterator's read transaction, and takes a snapshot of the current state of
  266  * the tree.  The data write happens immediately.
  267  *
  268  * @return This function will return one of the following values:
  269  *
  270  *         - LE_OK     - The commit was completed successfuly.
  271  *         - LE_FAULT  - An I/O error occured while writing the data.
  272  */
  273 //--------------------------------------------------------------------------------------------------
  274 le_result_t le_cfgAdmin_ExportTree
  275 (
  276     le_cfg_IteratorRef_t iteratorRef,
  277         ///< [IN] Write iterator that is being used for the export.
  278     const char* LE_NONNULL filePath,
  279         ///< [IN] Import the tree data from the this file.
  280     const char* LE_NONNULL nodePath
  281         ///< [IN] Where in the tree should this export happen?  Leave
  282         ///<   as an empty string to use the iterator's current
  283         ///<   node.
  284 );
  285 
  286 //--------------------------------------------------------------------------------------------------
  287 /**
  288  * Delete a tree from the system, both from the filesystem and from memory.
  289  */
  290 //--------------------------------------------------------------------------------------------------
  291 void le_cfgAdmin_DeleteTree
  292 (
  293     const char* LE_NONNULL treeName
  294         ///< [IN] Name of the tree to delete.
  295 );
  296 
  297 //--------------------------------------------------------------------------------------------------
  298 /**
  299  * Create a new iterator object for iterating over the list of trees currently managed by the
  300  * config tree daemon.
  301  */
  302 //--------------------------------------------------------------------------------------------------
  303 le_cfgAdmin_IteratorRef_t le_cfgAdmin_CreateTreeIterator
  304 (
  305     void
  306 );
  307 
  308 //--------------------------------------------------------------------------------------------------
  309 /**
  310  * Release the iterator and free it's memory back to the system.
  311  */
  312 //--------------------------------------------------------------------------------------------------
  313 void le_cfgAdmin_ReleaseTreeIterator
  314 (
  315     le_cfgAdmin_IteratorRef_t iteratorRef
  316         ///< [IN] Iterator object to release.
  317 );
  318 
  319 //--------------------------------------------------------------------------------------------------
  320 /**
  321  * Read the name of the tree currently pointed at by the iterator.
  322  *
  323  * @return LE_OK if there is enough room to copy the name into the supplied buffer.  LE_OVERFLOW if
  324  *         not.  LE_NOT_FOUND is returned if the list is empty or if the iterator hasn't been moved
  325  *         onto the first item yet.
  326  */
  327 //--------------------------------------------------------------------------------------------------
  328 le_result_t le_cfgAdmin_GetTreeName
  329 (
  330     le_cfgAdmin_IteratorRef_t iteratorRef,
  331         ///< [IN] Iterator object to read.
  332     char* name,
  333         ///< [OUT] Name of the currently referenced tree is
  334         ///<   passed in this out parameter.
  335     size_t nameSize
  336         ///< [IN]
  337 );
  338 
  339 //--------------------------------------------------------------------------------------------------
  340 /**
  341  * Move onto the next tree in the list.  If there are no more trees this function returns false,
  342  * otherwise true is returned.
  343  *
  344  * @return LE_OK if there are more trees to iterate through.  LE_NOT_FOUND if not.
  345  */
  346 //--------------------------------------------------------------------------------------------------
  347 le_result_t le_cfgAdmin_NextTree
  348 (
  349     le_cfgAdmin_IteratorRef_t iteratorRef
  350         ///< [IN] Iterator to iterate.
  351 );
  352 
  353 #endif // LE_CFGADMIN_INTERFACE_H_INCLUDE_GUARD
le_cfgAdmin_ConnectService
void le_cfgAdmin_ConnectService(void)
le_cfgAdmin_ReleaseTreeIterator
void le_cfgAdmin_ReleaseTreeIterator(le_cfgAdmin_IteratorRef_t iteratorRef)
le_cfg_interface.h
le_cfgAdmin_CreateTreeIterator
le_cfgAdmin_IteratorRef_t le_cfgAdmin_CreateTreeIterator(void)
le_result_t
le_result_t
Definition: le_basics.h:35
le_cfgAdmin_ImportTree
le_result_t le_cfgAdmin_ImportTree(le_cfg_IteratorRef_t iteratorRef, const char *LE_NONNULL filePath, const char *LE_NONNULL nodePath)
le_cfgAdmin_ExportTree
le_result_t le_cfgAdmin_ExportTree(le_cfg_IteratorRef_t iteratorRef, const char *LE_NONNULL filePath, const char *LE_NONNULL nodePath)
le_cfg_IteratorRef_t
struct le_cfg_Iterator * le_cfg_IteratorRef_t
Definition: le_cfg_interface.h:454
le_cfgAdmin_DisconnectHandler_t
void(* le_cfgAdmin_DisconnectHandler_t)(void *)
Definition: le_cfgAdmin_interface.h:148
le_cfgAdmin_DeleteTree
void le_cfgAdmin_DeleteTree(const char *LE_NONNULL treeName)
legato.h
le_cfgAdmin_GetTreeName
le_result_t le_cfgAdmin_GetTreeName(le_cfgAdmin_IteratorRef_t iteratorRef, char *name, size_t nameSize)
le_cfgAdmin_DisconnectService
void le_cfgAdmin_DisconnectService(void)
le_cfgAdmin_IteratorRef_t
struct le_cfgAdmin_Iterator * le_cfgAdmin_IteratorRef_t
Definition: le_cfgAdmin_interface.h:230
le_cfgAdmin_TryConnectService
le_result_t le_cfgAdmin_TryConnectService(void)
le_cfgAdmin_NextTree
le_result_t le_cfgAdmin_NextTree(le_cfgAdmin_IteratorRef_t iteratorRef)
le_cfgAdmin_SetServerDisconnectHandler
void le_cfgAdmin_SetServerDisconnectHandler(le_cfgAdmin_DisconnectHandler_t disconnectHandler, void *contextPtr)