namespace – name space description file

Namespace files describe how to construct a name space from scratch, an operation normally performed by the newns or addns subroutines (see auth(2)) which is typically called by init(8). Each line specifies one name space operation. Spaces and tabs separate arguments to operations. Blank lines and lines with # as the first non–space character are ignored. Environment variables of the form $name are expanded within arguments, where name is a UTF string terminated by white space, a /, or a $.

The known operations and their arguments are:
mount [–abcC] servename old [spec]
Mount servename on old.
bind [–abcC] new old
Bind new on old.
cd dir
Change the working directory to dir.
unmount [new] old
Unmount new from old, or everything mounted on old if new is missing.
chdev [–nr] devmask
defines a string of driver characters to restrict the current namespace to. Existing binds of drivers are left unaffected.
Clear the name space with rfork(RFCNAMEG).
. path
Execute the namespace file path. Note that path must be present in the name space being built.

The options for bind and mount are interpreted as in bind(1).

bind(1), namespace(4), init(8), chdev(1)