Reading all file permissions:

file-permissions ( path -- n )

Reading individual file permissions:

uid? ( obj -- ? )

gid? ( obj -- ? )

sticky? ( obj -- ? )

user-read? ( obj -- ? )

user-write? ( obj -- ? )

user-execute? ( obj -- ? )

group-read? ( obj -- ? )

group-write? ( obj -- ? )

group-execute? ( obj -- ? )

other-read? ( obj -- ? )

other-write? ( obj -- ? )

other-execute? ( obj -- ? )

Changing file permissions:

add-file-permissions ( path n -- )

remove-file-permissions ( path n -- )

set-file-permissions ( path n -- )

Writing individual file permissions:

set-uid ( path ? -- )

set-gid ( path ? -- )

set-sticky ( path ? -- )

set-user-read ( path ? -- )

set-user-write ( path ? -- )

set-user-execute ( path ? -- )

set-group-read ( path ? -- )

set-group-write ( path ? -- )

set-group-execute ( path ? -- )

set-other-read ( path ? -- )

set-other-write ( path ? -- )

set-other-execute ( path ? -- )