Class, Operator, and Rights Syntax (System Administration Guide: Naming and Directory Services (FNS and NIS+))

System Administration Guide: Naming and Directory Services (FNS and NIS+)

Class, Operator, and Rights Syntax

Access rights, whether specified in an environment variable or a command, are identified with three types of arguments: class, operator, and right.

Class. Class refers to the type of NIS+ principal (authorization class) to which the rights will apply.

Table 15–7 Access Rights Syntax—Class


Class	Description
`n`	Nobody: all unauthenticated requests
`o`	The owner of the object or table entry
`g`	The group owner of the object or table entry
`w`	World: all authenticated principals
`a`	All: shorthand for owner, group, and world (this is the default)

Operator. The operator indicates the kind of operation that will be performed with the rights.

Table 15–8 Access Rights Syntax—Operator


Operator	Description
`+`	Adds the access rights specified by right
`-`	Revokes the access rights specified by right
`=`	Explicitly changes the access rights specified by right; in other words, revokes all existing rights and replaces them with the new access rights.

Rights. The rights are the access rights themselves. The accepted values for each are listed below.

Table 15–9 Access Rights Syntax—Rights


Right	Description
`r`	Reads the object definition or table entry
`m`	Modifies the object definition or table entry
`c`	Creates a table entry or column
`d`	Destroys a table entry or column

You can combine operations on a single command line by separating each operation from the next with a comma (,).

Table 15–10 Class, Operator, and Rights Syntax—Examples


Operations	Syntax
Add read access rights to the owner class	`o+r`
Change owner. group, and world classes' access rights to modify only from whatever they were before	`a=m`
Add read and modify rights to the world and nobody classes	`wn+m`
Remove all four rights from the group, world, and nobody classes	`gwn-rmcd`
Add create and destroy rights to the owner class and add read and modify rights to the world and nobody classes	`o+cd,wn+rm`