Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

System Administration Guide: Advanced Administration
Previous Next

Service Access Facility Administration (Reference)

This chapter includes reference information for administration of the Service Access Facility.

Files Associated With the SAF

The SAF uses configuration files that can be modified by using the sacadm and pmadm commands. You should not need to manually edit the configuration files.

File Name

Description

/etc/saf/_sysconfig

Per-system configuration script.

/etc/saf/_sactab

The SAC's administrative file that contains configuration data for the port monitors that the SAC controls

/etc/saf/pmtag

Home directory for port monitor pmtag

/etc/saf/pmtag/_config

Per-port monitor configuration script for port monitor pmtag if it exists

/etc/saf/pmtag/_pmtab

Port monitor pmtag's administrative file that contains port monitor-specific configuration data for the services pmtag provides

/etc/saf/pmtag/svctag

Per-service configuration script for service svctag

/var/saf/log

The SAC's log file

/var/saf/pmtag

Directory for files created by pmtag, for example, log files

/etc/saf/_sactab File

The information in the /etc/saf/_sactab file is as follows:

# VERSION=1
zsmon:ttymon::0:/usr/lib/saf/ttymon
#
# VERSION=1

Indicates the Service Access Facility version number.

zsmon

Is the name of the port monitor.

ttymon

Is the type of port monitor.

::

Indicates whether the following two flags are set:

  • d — Do not enable the port monitor.

  • x — Do not start the port monitor. No flags are set in this example.

0

Indicates the return code value. A return count of 0 indicates that the port monitor is not be restarted if the port monitor fails.

/usr/lib/saf/ttymon

Indicates the port monitor path name.

/etc/saf/pmtab/_pmtab File

The /etc/saf/pmtab/_pmtab file, such as /etc/saf/zsmon/_pmtab, is similar to the following:

# VERSION=1
ttya:u:root:reserved:reserved:reserved:/dev/term/a:I::/usr/bin/login::9600:
ldterm,ttcompat:ttya login\: ::tvi925:y:# 
# VERSION=1

Indicates the Service Access Facility version number.

ttya

Indicates the service tag.

x,u

Identifies whether the following flags are set:

  • x — Do not enable the service.

  • u — Create a utmpx entry for the service.

root

Indicates the identity assigned to the service tag.

reserved

This field is reserved for future use.

reserved

This field is reserved for future use.

reserved

This field is reserved for future use.

/dev/term/a

Indicates the TTY port path name.

/usr/bin/login

Identifies the full path name of the service to be invoked when a connection is received.

:c,b,h,I,r:

Indicates whether the following flags are set:

c — Sets the connect on carrier flag for the port.

b — Sets the port as bidirectional, allowing both incoming and outgoing traffic.

h — Suppresses an automatic hangup immediately after an incoming call is received.

I — Initializes the port.

r — Forces ttymon to wait until it receives a character from the port before ttymon prints the login: message.

9600

Identifies the TTY label defined in the /etc/ttydefs file.

ldterm,ttcompat

Identifies the STREAMS modules to be pushed.

ttya login\:

Identifies the prompt to be displayed.

:y/n:

Indicates yes or no response.

message

Identifies any inactive (disabled) response message.

tvi925

Identifies the terminal type.

y

Indicates whether the software carrier is set (y/n).

Service States

The sacadm command controls the states of services. The following table describes the possible states of services.

State

Description

Enabled

Default state – When the port monitor is added, the service operates.

Disabled

Default state – When the port monitor is removed, the service stops.

To determine the state of any particular service, use the following:

# pmadm -l -p portmon-name -ssvctag

Port Monitor States

The sacadm command controls the states of the ttymon and listen port monitors. The following table describes the possible port monitor states.

State

Description

Started

Default state – When the port monitor is added, it is automatically started.

Enabled

Default state – When the port monitor is added, it is automatically ready to accept requests for service.

Stopped

Default state – When the port monitor is removed, it is automatically stopped.

Disabled

Default state – When the port monitor is removed, it automatically continues existing services and refuses to add new services.

Starting

Intermediate state – The port monitor is in the process of starting.

Stopping

Intermediate state – The port monitor has been manually terminated, but it has not completed its shutdown procedure. The port monitor is on the way to becoming stopped.

Notrunning

Inactive state – The port monitor has been killed. All ports previously monitored are inaccessible. An external user cannot tell whether a port is disabled or notrunning.

Failed

Inactive state – The port monitor is unable to start and remain running.

To determine the state of any particular port monitor, use the following command:

# sacadm -l -p portmon-name

Port States

Ports can be enabled or disabled depending on the state of the port monitor that controls the ports.

State

Description

Serial (ttymon) port states

Enabled

The ttymon port monitor sends a prompt message to the port and provides login service to it.

Disabled

Default state of all ports if ttymon is killed or disabled. If you specify this state, ttymon sends out the disabled message when it receives a connection request.

Previous Next

 
 
  Published under the terms fo the Public Documentation License Version 1.01. Design by Interspire