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Using CLI utility:
psmcli set <parameter name as in bbhm file>
Eg: psmcli set eRT.com.cisco.spvtg.ccsp.Device.WiFi.NotifyWiFiChanges true
Syscfg_create executable creates shared memory with user configuration data (/nvram/syscfg.db). This is present in the code base at the location /ccsp/utopia/source/syscfg
Apply_system_defaults executable reads the data from system_defaults file (path: /etc/utopia/system_defaults) and compares with syscfg.db, in case of any data is missing in syscfg, those defaults are written in to shared memory. On start of any module, data is read from the shared memory during initialization.
If syscgf.db does not exists (e.g in case of factory reset) apply_system_default executable writes all default data on to shared memory and syscfg_commit() gets called which in turn creates syscgf.db.
Gw_prov_utopia exe calls Init script. Init script executes all executables present in /etc/utopia/registration.d/ directory. 10_firewall exe is responsible for firewall events and it registers for sysevent callback with service name as firewall. Handler script is firewall_log_handle.sh. If any firewall event occurs sysevent is triggered with firewall-restart event name.
Firewall Initialization Process
On firewall-restart event service_start() method gets called. Ip4table and Ip6table rules are prepared by reading data from shared memory, written into /tmp/.ipt and /tmp/.ipt_v6 files respectively. Iptable rules are restored using these files.
Following sequence explains flow when a SET from SNMP, TR69 or CLI is done:
Eg. Second row entry details are saved as shown below in xml.
pcms_2::method=URL
pcms_2::always=1
pcms_2::end_time=
ManagedSiteBlock_2=pcms_2
pcms_2::alias=cpe-BlockedURL-2
pcms_2::days=
pcms_2::site=https://www.wellsfargo.com
pcms_2::ins_num=2
pcms_2::start_time=
...
PSM CLI operation information captured here PSM CLI Operations.