NAME

sysconfigtab − Configurable subsystem definition database file

SYNOPSIS

/etc/sysconfigtab

DESCRIPTION

The sysconfigtab file contains initial values for the attributes of subsystems that can be dynamically configured.  The information in the sysconfigtab file is loaded into an in-memory kernel database when the system boots.  At subsystem configuration time, values in the in-memory kernel database override default values coded into the subsystem. 

The sysconfigtab file consists of formatted entries. The first line in an entry specifies the subsystem name.  Subsequent lines specify the subsystems’ attributes and values.  Comment lines are allowed within an entry. The following shows the syntax of a subsystem entry: subsystem-name: #This is a comment describing the subsystem
  attribute1 = value1
  attribute2 = value2, value3

The following list details the rules you follow to create sysconfigtab entries:

       •Terminate the subsystem name with a colon (:). 

       •Terminate each attribute name and value pair with a newline character. 

       •Separate attribute names from values with an equal sign (=). 

       •For attributes that have more than one value, separate values in the list with a comma (,). 

       •Use blanks and tabs at the beginning and end of lines to help the readability of the file. 

       •Omit quotation marks (") from string values. You can include blank or tab characters in the middle of a string, but leading or trailing blanks are ignored. 

       •Use a number sign (#) at the beginning of comment lines. 

If you include comments that are specific to the subsystem, place the comment after the line containing the subsystem name.  The sysconfigdb command, which you use to maintain the sysconfigtab file, considers a sysconfigtab entry to begin with the subsystem name and end with either the next subsystem name or the end of the file.  Any comments that appear before a subsystem name are considered to be part of the preceding subsystem and are deleted if the preceding subsystem is deleted. 

For a list of the subsystem attributes you can configure, see the System Administration manual.  For information about loadable device driver attributes, see the Writing Device Drivers: Tutorial manual. 

RESTRICTIONS

The maximum length of a stanza entry is 40960 bytes.  An entry cannot contain more than 2048 fields (lines). 

The maximum length of a stanza field is 500 bytes. 

EXAMPLES

The following shows an example stanza entry that could appear in the configurable subsystem database:

proc:
             max_proc_per_user = 50
             max_threads_per_user = 300

The preceding entry defines the max_proc_per_user and max_threads_per_user attributes for the proc subsystem. 

RELATED INFORMATION

Commands:  sysconfig(8), sysconfigdb(8), cfgmgr(8)

Files:  stanza(4)

System Administration
Writing Device Drivers: Tutorial