NAME¶

nfs4_setfacl, nfs4_editfacl - manipulate NFSv4 file/directory access control lists

SYNOPSIS¶

nfs4_setfacl [OPTIONS] COMMAND file...
nfs4_editfacl [OPTIONS] file...

DESCRIPTION¶

nfs4_setfacl manipulates the NFSv4 Access Control List (ACL) of one or more files (or directories), provided they are on a mounted NFSv4 filesystem which supports ACLs.

nfs4_editfacl is equivalent to nfs4_setfacl -e.

Refer to the nfs4_acl(5) manpage for information about NFSv4 ACL terminology and syntax.

PERMISSIONS ALIASES¶

With nfs4_setfacl, one can use simple abbreviations ("aliases") to express generic "read" (R), generic "write" (W), and generic "execute" (X) permissions, familiar from the POSIX mode bits used by, e.g., chmod(1). To use these aliases, one can put them in the permissions field of an NFSv4 ACE and nfs4_setfacl will convert them: an R is expanded to rntcy, a W is expanded to watTNcCy (with D added to directory ACEs), and an X is expanded to xtcy. Please refer to the nfs4_acl(5) manpage for information on specific NFSv4 ACE permissions.

For example, if one wanted to grant generic "read" and "write" access on a file, the NFSv4 permissions field would normally contain something like rwatTnNcCy. Instead, one might use aliases to accomplish the same goal with RW.

The two permissions not included in any of the aliases are d (delete) and o (write-owner). However, they can still be used: e.g., a permissions field consisting of Wdo expresses generic "write" access as well as the ability to delete and change ownership.

EXAMPLES¶

Assume that the file `foo' has the following NFSv4 ACL for the following examples:

A::OWNER@:rwatTnNcCy
D::OWNER@:x
A:g:GROUP@:rtncy
D:g:GROUP@:waxTC
A::EVERYONE@:rtncy
D::EVERYONE@:waxTC

-

add ACE granting `alice@nfsdomain.org' generic "read" and "execute" access (defaults to prepending ACE to ACL):
$ nfs4_setfacl -a A::alice@nfsdomain.org:rxtncy foo

-

add the same ACE as above, but using aliases:
$ nfs4_setfacl -a A::alice@nfsdomain.org:RX foo

-

edit existing ACL in a text editor and set modified ACL on clean save/exit:
$ nfs4_setfacl -e foo

-

set ACL (overwrites original) to contents of a spec_file named `newacl.txt':
$ nfs4_setfacl -S newacl.txt foo

-

recursively set the ACLs of all files and subdirectories in the current directory, skipping all symlinks encountered, to the ACL contained in the spec_file named `newacl.txt':
$ nfs4_setfacl -R -P -S newacl.txt *

-

delete the first ACE, but only print the resulting ACL (does not save changes):
$ nfs4_setfacl --test -x 1 foo

-

delete the last two ACEs above:
$ nfs4_setfacl -x A::EVERYONE@rtncy,D::EVERYONE@:waxTC foo

-

modify (in-place) the second ACE above:
$ nfs4_setfacl -m D::OWNER@:x D::OWNER@:xo foo

-

set ACLs of `bar' and `frobaz' to ACL of `foo':
$ nfs4_getfacl foo | nfs4_setfacl -S - bar frobaz

AUTHORS¶

nfs4_setfacl was written by people at CITI, the Center for Information Technology Integration (http://www.citi.umich.edu). This manpage was written by David Richter.

CONTACT¶

Please send bug reports, feature requests, and comments to <nfsv4@linux-nfs.org>.

SEE ALSO¶

nfs4_getfacl(1), nfs4_acl(5), RFC3530 (NFSv4.0), NFSv4.1 Minor Version Draft.