System GClasses - Yuneta Simplified

Core runtime, file-system watcher, pseudo-terminal, OTA updates, and miscellaneous system services.

Source: kernel/c/root-linux/src/c_yuno.c, c_fs.c, c_pty.c, c_ota.c, c_gss_udp_s.c

C_YUNO¶

Main yuno GClass — the root grandmother of every yuno application. Manages services, configuration, logging, tracing, IP filtering, and system-wide commands.

Property	Value
States	`ST_STOPPED`, `ST_IDLE`

Commands (selection)¶

Command	Description
`view-gclass-register`	List all registered GClasses.
`view-services` / `view-top-services`	List services.
`view-gobj` / `view-gobj-tree`	Inspect the gobj tree.
`enable-gobj` / `disable-gobj`	Enable or disable a gobj.
`write-attr` / `view-attrs` / `attrs-schema`	Read/write gobj attributes.
`set-global-trace` / `set-gclass-trace` / `set-gobj-trace`	Configure trace levels.
`reset-all-traces` / `set-deep-trace`	Trace management.
`info-global-trace`	Show trace configuration.
`view-config`	Show yuno configuration.
`info-mem`	Memory usage info.
`info-cpus` / `info-ifs` / `info-os`	System information.
`list-allowed-ips` / `add-allowed-ip`	IP access control.
`truncate-log-file`	Truncate the log file.
`view-log-counters`	Show log event counters.
`add-log-handler` / `del-log-handler` / `list-log-handlers`	Log handler management.

See also the Yuno API for C helper functions.

C_FS¶

File-system watcher — monitors directory changes using the fs_watcher engine.

Property	Value
States	`ST_STOPPED`, `ST_IDLE`
Output events	`EV_ON_MESSAGE` (directory change notifications)

Key attributes¶

Attribute	Type	Description
`path`	`string`	Directory to watch.
`recursive`	`bool`	Watch subdirectories recursively.
`info`	`bool`	Report found subdirectories on startup.

C_PTY¶

Pseudo-terminal — spawns a shell or process in a PTY and provides bidirectional I/O.

Property	Value
States	`ST_STOPPED`, `ST_DISCONNECTED`, `ST_CONNECTED`
Input events	`EV_TX_DATA`, `EV_DROP`
Output events	`EV_RX_DATA`, `EV_CONNECTED`, `EV_DISCONNECTED`

Key attributes¶

Attribute	Type	Description
`process`	`string`	Command to execute (default: user’s shell).
`rows`	`integer`	Terminal rows.
`cols`	`integer`	Terminal columns.
`cwd`	`string`	Working directory.
`max_tx_queue`	`integer`	Maximum transmit queue size.

C_OTA¶

Over-the-air update manager — downloads and applies firmware updates.

Property	Value
States	`ST_STOPPED`, `ST_IDLE`, `ST_WAIT_RESPONSE`

Key attributes¶

Attribute	Type	Description
`url_ota`	`string`	OTA server URL.
`cert_pem`	`string`	TLS certificate (PEM).
`ota_state`	`string`	Current OTA state (read-only).
`force`	`bool`	Force update even if role differs.
`timeout_validate`	`integer`	Validation timeout in seconds.

Commands¶

Command	Description
`download-firmware`	Start firmware download.

C_GSS_UDP_S¶

Gossamer UDP server — manages multiple virtual channels over a single UDP socket.

Property	Value
States	`ST_STOPPED`, `ST_IDLE`
Input events	`EV_RX_DATA`, `EV_TX_DATA`, `EV_TIMEOUT`, `EV_STOPPED`
Output events	`EV_ON_MESSAGE`, `EV_ON_OPEN`, `EV_ON_CLOSE`

Key attributes¶

Attribute	Type	Description
`url`	`string`	UDP listening URL.
`timeout_base`	`integer`	Base timeout in seconds.
`seconds_inactivity`	`integer`	Channel inactivity timeout.
`disable_end_of_frame`	`bool`	Disable end-of-frame detection.