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Property:avmntpd (avmcmd)

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Info
  
Name-Collision - multiple objects in this wiki use the name avmntpd!
avmntpd (avmcmd) SNTP client daemon.
avmntpd (process) SNTP client daemon.
avmntpd (watchdog) SNTP client daemon.

AVM-Command

Goto:   Examples  -  Endpoints  -  Events  -  Config  -  Source  -  Dependencies   -   Model-Matrix   -   Symbols   -   SMW-Browser

Details

avmntpd is a new SNTP client daemon.

It is subscribed to the state_iface_inet state in the AVMIPC-Datastore and gets active when it turns CONNECTED.
Since fw 7.39 ~100k it is triggered by the STATE_IFACE_INET_FAMILY state instead.

It then performs a SNTP request to the time server and starts / restarts / controls chronyd on success and sets the avmipc
state STATE_SYSTEMTIMESTATUS_FBSTATE.

The job of avmntpd is apparently to quickly get a system time, while letting chronyd maintain its precision and distribution.

fw 7.39 help:

root@fritz:/var/mod/root# avmntpd -?

usage: avmntpd [options]

options:
  -?                 - print this help
  -s                 - stop daemon. (NOTSET)
  -p STRING          - Pidfile. ("/var/run/avmntpd.pid")
  -D STRING          - switch debug logs on. (FUNC)

start daemon:   avmntpd
stop daemon :   avmntpd -s

Examples

Internet connection status triggering avmntpd:

root@fritz:/var/mod/root# aicmd avmipcd datastore query state_iface_inet full

state_iface_inet: local:avmntpd local:_anony-ctlmgr-1860-2765839584 local:vpnd
   DATA: <<!EOF!
CONNECTED^@!EOF!

Excerpt from supportdata 7.39 which calls 'showshringbuf avmntpd':

##### BEGIN SECTION avmntpd

1970-01-01 01:00:35.481 - reconfig
1970-01-01 01:00:35.550 - chronyd_notify v4 = 0, v6 = 0
1970-01-01 01:00:47.550 - chronyd_notify v4 = 0, v6 = 0
1970-01-01 01:02:08.562 - chronyd_notify v4 = 0, v6 = 0
1970-01-01 01:02:09.124 - chronyd_notify v4 = 1, v6 = 0
1970-01-01 01:02:09.124 - now online, starting sntp
1970-01-01 01:02:09.125 - dns_query: resolving server ntp1.t-online.de
1970-01-01 01:02:09.141 - dns_complete() append for ntp1.t-online.de: 194.25.134.196
1970-01-01 01:02:09.142 - sntp_query(): send ntp request to 194.25.134.196:123
1970-01-01 01:02:09.164 - system time is 1649694689.499489 seconds behind
1970-01-01 01:02:09.164 - setting time, deviation is 1649694689 seconds
2022-04-11 18:33:38.674 - chronyd_notify v4 = 1, v6 = 0
2022-04-11 18:33:38.679 - chronyd: started

##### END SECTION avmntpd

Another sample:

##### BEGIN SECTION avmntpd

1970-01-01 01:00:35.050 - reconfig
1970-01-01 01:02:59.172 - chronyd_notify v4 = 0, v6 = 0
1970-01-01 01:03:02.172 - chronyd_notify v4 = 0, v6 = 0
1970-01-01 01:03:02.423 - chronyd_notify v4 = 1, v6 = 0
1970-01-01 01:03:02.423 - now online, starting sntp
1970-01-01 01:03:02.423 - dns_query: resolving server ntp1.t-online.de
1970-01-01 01:03:02.432 - dns_complete() append for ntp1.t-online.de: 194.25.134.196
1970-01-01 01:03:02.433 - sntp_query(): send ntp request to 194.25.134.196:123
1970-01-01 01:03:02.463 - system time is 1648231340.317181 seconds behind
1970-01-01 01:03:02.463 - setting time, deviation is 1648231340 seconds
2022-03-25 19:05:22.785 - chronyd_notify v4 = 1, v6 = 1
2022-03-25 19:05:22.788 - chronyd: started
2022-03-26 03:05:22.789 - chronyc: >>> refresh
2022-03-26 03:05:22.847 - chronyc: <<< 200 OK
2022-03-26 11:05:22.791 - chronyc: >>> refresh
2022-03-26 11:05:22.798 - chronyc: <<< 200 OK

##### END SECTION avmntpd

Endpoints

aicmd endpoint(s) provided by avmntpd, with these functions: (fw 7.39)

root@fritz:/var/mod/root# aicmd avmntpd

# provided by avmntpd: - fw 7.39+

HELP                                     - show help
SLABDUMP                                 - show slab allocation
SLABSHOW                                 - show slab information
QUIT                                     - disconnect

# provided by libewnwlinux.so: - fw 7.01+

ewnwlinux show csockshell                - show shells running
ewnwlinux show genetlink                 - show gerneric netlink families

# provided by libavmcsock.so: - fw 7.01+

avmcsock show csock                      - show all csock
avmcsock show dnsconfig                  - show all dns context
avmcsock show timercb                    - show all timer
avmcsock show debughandles               - show all debughandles
avmcsock show cprocess                   - show all processes
avmcsock set debug                       - set debug flags

# provided by libavmcsock.so: - fw 7.29+

avmcsock show cbcontext                  - show all cbdata
avmcsock show daemon                     - show daemon status
avmcsock show cbuf                       - show cbuf status

# provided by libavmcsock.so: - fw 7.39+

avmcsock getsymbol <address>             - get symbol for address
avmcsock show dnsglobal                  - show all dns global values
avmcsock show dnscache                   - show cache
avmcsock show dnsqueries                 - show all pending queries
avmcsock show avmipc [endpoint shmatch]  - show avmipc events and states
avmcsock ctimer show                     - show all timer
avmcsock ctimer overview                 - show ctimer overview
avmcsock iotrace format unctrl|hexdump   - set format for csock iotrace
avmcsock iotrace file                    - enable iotrace to file
avmcsock iotrace enable                  - enable iotrace via debugmsg
avmcsock iotrace disable                 - disable iotrace
avmcsock iotrace match help|<match>      - show allowed matches or set match
avmcsock iotrace reset                   - remove all matches
avmcsock iotrace show                    - show configuration

msgsend endpoint(s) provided by avmntpd, with these functions: (endpoints + commands, collected manually)

avmntpd reload      # from avmntpd.service

Events

Daily updated index of AVM-Events and AVMIPC-Datastore nodes affecting this command. Last update: 2023-02-07 06:39 GMT.
The owners of Event-Sinks and Event-Sources are manual research, which may be incomplete or even wrong.
A * in the Mod column marks info from Supportdata-Probes, which will always stay incomplete.
A ** in the Mod column marks info from Supportdata2 probes, which by their nature will stay way more incomplete.
A - in the Mod column marks manual research, the Firmware then shows where the item occurs, not the Relation.

Relation Typ Object Mod Firmware Info Origin
Endpoint sock me_avmntpd.ctl 8* 7.39 - 7.51 avmipc_command endpoint of avmntpd AVM
Listens to avmipc @ 11** 7.39 - 7.51 Special event for listeners of nameless private messages. AVM
Listens to avmipc aicmd_listener 11** 7.39 - 7.51 Special event covering all aicmd compatible listeners. AVM
Listens to avmipc state_iface_inet 1** 7.39 State of the internet connection in JSON format. AVM
Listens to avmipc STATE_IFACE_INET_FAMILY 11** 7.39 - 7.51 State of the internet connection in JSON format. AVM
Command cmd avmntpd (avmcmd) 32 7.39 - 7.51 SNTP client daemon. AVM
Sends avmipc STATE_SYSTEMTIMESTATUS_FBSTATE - 7.39 - 7.51 State of the validity of the system time in JSON format. AVM
7 event relations for this command

Config

Daily updated index of Configuration files accessed by this command. Last update: 2023-02-07 06:39 GMT.
A - in the Mod column marks manual research, the Firmware then shows where the item occurs, not the Relation.

Relation Typ Object Mod Firmware Info Origin
Config from tffs ar7.cfg (tffs) - 4.07 - 7.51 TODO AVM
Config from tffs chrony.drift (tffs) - 4.79 TODO AVM
2 config relations for this command

Source

The names of source files compiled into an executable often help to understand function blocks (and show gaps in the docs).
fw 7.39 source files:

$ strings /sbin/avmntpd | grep -e '\.c$' -e '\.cpp$'

ar7/avmntpd/avmntpd.c
ar7/avmntpd/sntp.c
ar7/avmntpd/chronyd_ctl.c  

Dependencies

Daily updated index of all dependencies of this command. Last update: 2023-02-07 07:21 GMT.
A * in the Mod column marks info from Supportdata-Probes, which will always stay incomplete.

Relation Typ Object Mod Firmware Info Origin
Started by serv avmntpd.service 32 7.39 - 7.51 supervisor service for avmntpd. AVM
Runs as proc avmntpd (process) 8* 7.39 - 7.51 SNTP client daemon. AVM
Registers wdog avmntpd (watchdog) 8* 7.39 - 7.51 SNTP client daemon. AVM
Serving sock me_avmntpd.ctl 8* 7.39 - 7.51 avmipc_command endpoint of avmntpd AVM
Depends on lib ld.so 10 7.39 - 7.51 Dynamic linker / loader Linux
Depends on lib libar7cfg.so 32 7.39 - 7.51 TFFS-Configuration API to ar7.cfg and many more. AVM
Depends on lib libavmauth.so 32 7.39 - 7.51 Fritzbox authentification helpers AVM
Depends on lib libavmcipher.so 32 7.39 - 7.51 AES / DES / Rijndael encryption / decryption. AVM
Depends on lib libavmcsock.so 32 7.39 - 7.51 Networking, I/O and helper functions AVM
Depends on lib libavmfbconf.so 32 7.39 - 7.51 API to hardcoded fbconf.cfg AVM
Depends on lib libavmfbstate.so 32 7.39 - 7.51 IPC fritzbox state notification AVM
Depends on lib libavmhmac.so 32 7.39 - 7.51 HMAC / SHA / MD5 hashing. AVM
Depends on lib libboxlib.so 32 7.39 - 7.51 Box status, logging and statistics functions AVM
Depends on lib libc.so 32 7.39 - 7.51 Standard C library Linux
Depends on lib libcrypto.so 32 7.39 - 7.51 OpenSSL general crypto and X.509 library Linux
Depends on lib libdl.so 7 7.39 - 7.50 Dynamic linking library Linux
Depends on lib libdputil.so 32 7.39 - 7.51 DataPipe / packet utilities AVM
Depends on lib libewnwlinux.so 32 7.39 - 7.51 Linux networking functions AVM
Depends on lib libewnwnet.so 32 7.39 - 7.51 Internet helper functions AVM
Depends on lib libpthread.so 7 7.39 - 7.50 POSIX threading library Linux
Depends on lib librt.so 7 7.39 - 7.50 POSIX realtime extensions library Linux
Depends on lib libsvctl.so 32 7.39 - 7.51 supervisor notification library AVM
Depends on lib libtiinterpreter.so 32 7.39 - 7.51 Preprocessor for SSI-Files by TI. AVM
Depends on lib libwdt.so 32 7.39 - 7.51 AVM-Watchdogs management API AVM
Depends on lib libwebkpiclient.so 23 7.39 - 7.51 KPI sensor for system parts which use HTTP / HTTPS AVM
Depends on lib libwebsrv.so 32 7.39 - 7.51 HTTP / HTTPS webserver and tools. AVM
Depends on lib libz.so 32 7.39 - 7.51 Zlib compressor / decompressor Linux
27 dependencies for this command

Model-Matrix

Daily updated index of the presence, path and size of this command for each model. Last update: 2023-02-07 05:56 GMT.
Showing all models using this command. Click any column header (click-wait-click) to sort the list by the respective data.
The (main/scrpn/boot/arm/prx/atom) label in the Model column shows which CPU is meant for models with multiple Linux instances.
Note that this list is merged from Firmware-Probes of all known AVM firmware for a model, including Recovery.exe and Labor-Files.

Model Firmware Path Size
FRITZ!Box 4040 7.39 /sbin 21.5k
FRITZ!Box 4060 7.39 /sbin 21.5k
FRITZ!Box 5590 Fiber (arm) 7.39 /sbin 21.5k
FRITZ!Box 6490 Cable (arm) 7.39 /sbin 25.4k
FRITZ!Box 6490 Cable (atom) 7.39 /sbin 25.4k
FRITZ!Box 6590 Cable (arm) 7.39 /sbin 25.4k
FRITZ!Box 6590 Cable (atom) 7.39 /sbin 25.4k
FRITZ!Box 6591 Cable (arm) 7.39 /sbin 29.6k
FRITZ!Box 6591 Cable (atom) 7.39 /sbin 29.6k
FRITZ!Box 6660 Cable (arm) 7.39 /sbin 29.6k
FRITZ!Box 6660 Cable (atom) 7.39 /sbin 29.6k
FRITZ!Box 6690 Cable (arm) 7.39 - 7.50 /sbin 29.6k
FRITZ!Box 6690 Cable (atom) 7.39 - 7.50 /sbin 29.6k
FRITZ!Box 6850 LTE 7.39 /sbin 21.5k - 27.9k
FRITZ!Box 6850 5G 7.39 /sbin 21.5k
FRITZ!Box 6890 LTE 7.39 /sbin 27.8k - 27.9k
FRITZ!Box 6890 LTE v1 7.39 /sbin 27.8k - 27.9k
FRITZ!Box 6890 LTE v2 7.39 /sbin 27.8k - 27.9k
FRITZ!Box 7490 (main) 7.39 - 7.51 /sbin 28.0k
FRITZ!Box 7510 7.39 /sbin 21.5k
FRITZ!Box 7520 7.39 - 7.50 /sbin 21.5k
FRITZ!Box 7520 v2 (arm) 7.39 - 7.50 /sbin 21.5k
FRITZ!Box 7530 7.39 - 7.51 /sbin 21.5k
FRITZ!Box 7530 AX 7.39 /sbin 21.6k
FRITZ!Box 7590 7.39 - 7.51 /sbin 27.7k - 27.9k
FRITZ!Box 7590 AX 7.39 /sbin 27.7k - 27.9k
FRITZ!Repeater 1200 AX 7.39 /sbin 17.4k
FRITZ!Repeater 2400 7.39 - 7.50 /sbin 19.1k - 23.8k
FRITZ!Repeater 3000 7.39 /sbin 17.5k
FRITZ!Repeater 3000 AX 7.39 - 7.41 /sbin 17.4k
FRITZ!Repeater 6000 7.39 /sbin 17.4k
FRITZ!Smart Gateway 7.39 - 7.51 /sbin 17.4k
32 models use this command

Symbols

Daily updated index of all symbols of this command. Last update: 2023-02-07 07:21 GMT.

Firmware Symbol
7.39 - 7.51 avmntpd_shringbufmsg
7.39 - 7.51 main
7.39 sntprequest_abort
7.39 sntprequest_run
4 symbols for this command

SMW-Browser

Information is currently being retrieved from the backend.