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diff --git a/docs/reference-v3/func-daemon.md b/docs/reference-v3/func-daemon.md new file mode 100644 index 00000000..11f44fbf --- /dev/null +++ b/docs/reference-v3/func-daemon.md @@ -0,0 +1,146 @@ +Functions of class **afb_daemon** +============================ + +All the functions of the class **afb_daemon** use the default api. +This are internally aliased to the corresponding function of class afb_api_t. + +```C +/** + * Retrieves the common systemd's event loop of AFB + */ +struct sd_event *afb_daemon_get_event_loop(); + +/** + * Retrieves the common systemd's user/session d-bus of AFB + */ +struct sd_bus *afb_daemon_get_user_bus(); + +/** + * Retrieves the common systemd's system d-bus of AFB + */ +struct sd_bus *afb_daemon_get_system_bus(); + +/** + * Broadcasts widely the event of 'name' with the data 'object'. + * 'object' can be NULL. + * + * For convenience, the function calls 'json_object_put' for 'object'. + * Thus, in the case where 'object' should remain available after + * the function returns, the function 'json_object_get' shall be used. + * + * Calling this function is only forbidden during preinit. + * + * Returns the count of clients that received the event. + */ +int afb_daemon_broadcast_event( + const char *name, + struct json_object *object); + +/** + * Creates an event of 'name' and returns it. + * + * Calling this function is only forbidden during preinit. + * + * See afb_event_is_valid to check if there is an error. + */ +afb_event_t afb_daemon_make_event( + const char *name); + +/** + * @deprecated use bindings version 3 + * + * Send a message described by 'fmt' and following parameters + * to the journal for the verbosity 'level'. + * + * 'file', 'line' and 'func' are indicators of position of the code in source files + * (see macros __FILE__, __LINE__ and __func__). + * + * 'level' is defined by syslog standard: + * EMERGENCY 0 System is unusable + * ALERT 1 Action must be taken immediately + * CRITICAL 2 Critical conditions + * ERROR 3 Error conditions + * WARNING 4 Warning conditions + * NOTICE 5 Normal but significant condition + * INFO 6 Informational + * DEBUG 7 Debug-level messages + */ +void afb_daemon_verbose( + int level, + const char *file, + int line, + const char * func, + const char *fmt, + ...); + +/** + * @deprecated use bindings version 3 + * + * Get the root directory file descriptor. This file descriptor can + * be used with functions 'openat', 'fstatat', ... + * + * Returns the file descriptor or -1 in case of error. + */ +int afb_daemon_rootdir_get_fd(); + +/** + * Opens 'filename' within the root directory with 'flags' (see function openat) + * using the 'locale' definition (example: "jp,en-US") that can be NULL. + * + * Returns the file descriptor or -1 in case of error. + */ +int afb_daemon_rootdir_open_locale( + const char *filename, + int flags, + const char *locale); + +/** + * Queue the job defined by 'callback' and 'argument' for being executed asynchronously + * in this thread (later) or in an other thread. + * If 'group' is not NUL, the jobs queued with a same value (as the pointer value 'group') + * are executed in sequence in the order of there submission. + * If 'timeout' is not 0, it represent the maximum execution time for the job in seconds. + * At first, the job is called with 0 as signum and the given argument. + * The job is executed with the monitoring of its time and some signals like SIGSEGV and + * SIGFPE. When a such signal is catched, the job is terminated and reexecuted but with + * signum being the signal number (SIGALRM when timeout expired). + * + * Returns 0 in case of success or -1 in case of error. + */ +int afb_daemon_queue_job( + void (*callback)(int signum, void *arg), + void *argument, + void *group, + int timeout); + +/** + * Tells that it requires the API of "name" to exist + * and if 'initialized' is not null to be initialized. + * Calling this function is only allowed within init. + * + * Returns 0 in case of success or -1 in case of error. + */ +int afb_daemon_require_api( + const char *name, + int initialized); + +/** + * Create an aliased name 'as_name' for the api 'name'. + * Calling this function is only allowed within preinit. + * + * Returns 0 in case of success or -1 in case of error. + */ +int afb_daemon_add_alias(const char *name, const char *as_name); + +/** + * Creates a new api of name 'api' with brief 'info'. + * + * Returns 0 in case of success or -1 in case of error. + */ +int afb_daemon_new_api( + const char *api, + const char *info, + int noconcurrency, + int (*preinit)(void*, struct afb_api_x3 *), + void *closure); +``` |