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-registerList all registered GClasses. view-services / view-top-servicesList services. view-gobj / view-gobj-treeInspect the gobj tree. enable-gobj / disable-gobjEnable or disable a gobj. write-attr / view-attrs / attrs-schemaRead/write gobj attributes. set-global-trace / set-gclass-trace / set-gobj-traceConfigure trace levels. reset-all-traces / set-deep-traceTrace management. info-global-traceShow trace configuration. view-configShow yuno configuration. info-memMemory usage info. info-cpus / info-ifs / info-osSystem information. list-allowed-ips / add-allowed-ipIP access control. truncate-log-fileTruncate the log file. view-log-countersShow log event counters. add-log-handler / del-log-handler / list-log-handlersLog 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_IDLEOutput events EV_ON_MESSAGE (directory change notifications)
Key attributes ¶ Attribute Type Description pathstringDirectory to watch. recursiveboolWatch subdirectories recursively. infoboolReport 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_CONNECTEDInput events EV_TX_DATA, EV_DROPOutput events EV_RX_DATA, EV_CONNECTED, EV_DISCONNECTED
Key attributes ¶ Attribute Type Description processstringCommand to execute (default: user’s shell). rowsintegerTerminal rows. colsintegerTerminal columns. cwdstringWorking directory. max_tx_queueintegerMaximum transmit queue size.
process is remote-settable (the agent’s authz-gated open-console command),
so since 7.6.0 it is resolved against a fixed trusted-dir allowlist , never
the inherited $PATH: an absolute path is accepted only if executable, a bare
name is resolved against /bin, /usr/bin, /sbin, /usr/sbin,
/usr/local/bin (in order), a relative-with-slash name is rejected, and
anything else fails closed (no exec). The spawn uses execv, not execvp, so a
planted $PATH entry cannot hijack a bare process name.
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_otastringOTA server URL. cert_pemstringTLS certificate (PEM). ota_statestringCurrent OTA state (read-only). forceboolForce update even if role differs. timeout_validateintegerValidation timeout in seconds.
Commands ¶ Command Description download-firmwareStart firmware download.
C_GSS_UDP_S ¶ Gossamer UDP server — manages multiple virtual channels over a single
UDP socket.
Property Value States ST_STOPPED, ST_IDLEInput events EV_RX_DATA, EV_TX_DATA, EV_TIMEOUT, EV_STOPPEDOutput events EV_ON_MESSAGE, EV_ON_OPEN, EV_ON_CLOSE
Key attributes ¶ Attribute Type Description urlstringUDP listening URL. timeout_baseintegerBase timeout in seconds. seconds_inactivityintegerChannel inactivity timeout. disable_end_of_frameboolDisable end-of-frame detection.