Administration Reference

fs listacl

Purpose

Displays ACLs

Synopsis

fs listacl [-path <dir/file path>+]  [-id]  [-if]  [-help]
   
fs la [-p <dir/file path>+]  [-id]  [-if]  [-h] 
   
fs lista [-p <dir/file path>+]  [-id]  [-if]  [-h] 

Description

The fs listacl command displays the access control list (ACL) associated with each specified file, directory, or symbolic link. The specified element can reside in the DFS filespace if the issuer is using the AFS/DFS Migration Toolkit Protocol Translator to access DFS data (and DFS does implement per-file ACLs). To display the ACL of the current working directory, omit the -path argument.

To alter an ACL, use the fs setacl command. To copy an ACL from one directory to another, use the fs copyacl command. To remove obsolete entries from an ACL, use the fs cleanacl command.

Cautions

Placing a user or group on the Negative rights section of the ACL does not guarantee denial of permissions, if the Normal rights section grants the permissions to members of the system:anyuser group. In that case, the user needs only to issue the unlog command to obtain the permissions granted to the system:anyuser group.

Options

-path

Names each directory or file for which to display the ACL. For AFS files, the output displays the ACL from the file's parent directory; DFS files do have their own ACL. Incomplete pathnames are interpreted relative to the current working directory, which is also the default value if this argument is omitted.

-id

Displays the Initial Container ACL of each DFS directory. This argument is supported only on DFS directories accessed via the AFS/DFS Migration Toolkit Protocol Translator.

-if

Displays the Initial Object ACL of each DFS directory. This argument is supported only on DFS directories accessed via the AFS/DFS Migration Toolkit Protocol Translator.

-help

Prints the online help for this command. All other valid options are ignored.

Output

The first line of the output for each file, directory, or symbolic link reads as follows:

   Access list for directory is
   

If the issuer used shorthand notation in the pathname, such as the period (.) to represent the current current directory, that notation sometimes appears instead of the full pathname of the directory.

Next, the Normal rights header precedes a list of users and groups who are granted the indicated permissions, with one pairing of user or group and permissions on each line. If negative permissions have been assigned to any user or group, those entries follow a Negative rights header. The format of negative entries is the same as those on the Normal rights section of the ACL, but the user or group is denied rather than granted the indicated permissions.

AFS does not implement per-file ACLs, so for a file the command displays the ACL on its directory. The output for a symbolic link displays the ACL that applies to its target file or directory, rather than the ACL on the directory that houses the symbolic link.

The permissions for AFS enable the possessor to perform the indicated action:

a

(administer): change the entries on the ACL

d

(delete): remove files and subdirectories from the directory or move them to other directories

i

(insert): add files or subdirectories to the directory by copying, moving or creating

k

(lock): set read locks or write locks on the files in the directory

l

(lookup): list the files and subdirectories in the directory, stat the directory itself, and issue the fs listacl command to examine the directory's ACL

r

(read): read the contents of files in the directory; issue the ls -l command to stat the elements in the directory

w

(write): modify the contents of files in the directory, and issue the UNIX chmod command to change their mode bits

A, B, C, D, E, F, G, H:

Have no default meaning to the AFS server processes, but are made available for applications to use in controlling access to the directory's contents in additional ways. The letters must be uppercase.

For DFS files and directories, the permissions are similar, except that the DFS x (execute) permission replaces the AFS l (lookup) permission, DFS c (control) replaces AFS a (administer), and there is no DFS equivalent to the AFS k (lock) permission. The meanings of the various permissions also differ slightly, and DFS does not implement negative permissions. For a complete description of DFS permissions, see the DFS documentation and the IBM AFS/DFS Migration Toolkit Administration Guide and Reference.

Examples

The following command displays the ACL on the home directory of the user pat (the current working directory), and on its private subdirectory.

   % fs listacl -path . private
   Access list for . is
   Normal rights:
      system:authuser rl
      pat rlidwka
      pat:friends rlid
   Negative rights:
      smith rlidwka
   Access list for private is
   Normal rights:
      pat rlidwka
   

Privilege Required

If the -path argument names an AFS directory, the issuer must have the l (lookup) permission on its ACL and the ACL for every directory that precedes it in the pathname.

If the -path argument names an AFS file, the issuer must have the l (lookup) and r (read) permissions on the ACL of the file's directory, and the l permission on the ACL of each directory that precedes it in the pathname.

If the -path argument names a DFS directory or file, the issuer must have the x (execute) permission on its ACL and on the ACL of each directory that precedes it in the pathname.

Related Information

fs cleanacl

fs copyacl

fs setacl

IBM AFS/DFS Migration Toolkit Administration Guide and Reference