FS_SETACL(1)

NAME

fs_setacl - Sets the ACL for a directory

SYNOPSIS

fs setacl -dir <directory>+ -acl <access list entries>+
    [-clear] [-negative] [-id] [-if] [-help]

fs sa -d <directory>+ -a <access list entries>+
    [-c] [-n] [-id] [-if] [-h]

fs seta -d <directory>+ -a <access list entries>+
    [-c] [-n] [-id] [-if] [-h]

DESCRIPTION

The fs setacl command adds the access control list (ACL) entries specified with the -acl argument to the ACL of each directory named by the -dir argument.

If the -dir argument designates a pathname in DFS filespace (accessed via the AFS/DFS Migration Toolkit Protocol Translator), it can be a
file as well as a directory. The ACL must already include an entry for "mask_obj", however. For more details, refer to the IBM AFS/DFS Migration Toolkit Administration Guide and Reference.

Only user and group entries are acceptable values for the -acl argument. Do not place machine entries (IP addresses) directly on an
ACL; instead, make the machine entry a group member and place the group on the ACL.

To completely erase the existing ACL before adding the new entries,
provide the -clear flag. To add the specified entries to the "Negative rights" section of the ACL (deny rights to specified users or groups), provide the -negative flag.

To display an ACL, use the fs listacl command. To copy an ACL from one directory to another, use the fs copyacl command.

CAUTIONS

If the ACL already grants certain permissions to a user or group, the
permissions specified with the fs setacl command replace the existing permissions, rather than being added to them.

Setting negative permissions is generally unnecessary and not
recommended. Simply omitting a user or group from the "Normal rights"
section of the ACL is normally adequate to prevent access. In
particular, note that it is futile to deny permissions that are granted to members of the system:anyuser group on the same ACL; the user needs only to issue the unlog command to receive the denied permissions.

When including the -clear option, be sure to reinstate an entry for each directory's owner that includes at least the "l" (lookup)
permission. Without that permission, it is impossible to resolve the
"dot" (".") and "dot dot" ("..") shorthand from within the directory.
(The directory's owner does implicitly have the "a" (administer)
permission even on a cleared ACL, but must know to use it to add other permissions.)

OPTIONS

-dir <directory>+: Names each AFS directory, or DFS directory or file, for which the
set the ACL. Partial pathnames are interpreted relative to the
current working directory.; Specify the read/write path to each directory (or DFS file), to
avoid the failure that results from attempting to change a readonly volume. By convention, the read/write path is indicated by
placing a period before the cell name at the pathname's second
level (for example, /afs/.abc.com). For further discussion of the concept of read/write and read-only paths through the filespace,
see the fs mkmount reference page.
-acl <access list entries>+: Defines a list of one or more ACL entries, each a pair that names:; o A user name or group name as listed in the Protection Database.; o One or more ACL permissions, indicated either by combining the
individual letters or by one of the four acceptable shorthand
words.; in that order, separated by a space (thus every instance of this
argument has two parts). The accepted AFS abbreviations and
shorthand words, and the meaning of each, are as follows:; 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.; all Equals all seven permissions ("rlidwka").; none
No permissions. Removes the user/group from the ACL, but does
not guarantee they have no permissions if they belong to groups that remain on the ACL.; read
Equals the "r" (read) and "l" (lookup) permissions.; write
Equals all permissions except "a" (administer), that is,
"rlidwk".; It is acceptable to mix entries that combine the individual letters with entries that use the shorthand words, but not use both types
of notation within an individual pairing of user or group and
permissions.; To learn the proper format and acceptable values for DFS ACL
entries, see the IBM AFS/DFS Migration Toolkit Administration Guide and Reference.
-clear: Removes all existing entries on each ACL before adding the entries specified with the -acl argument.
-negative: Places the specified ACL entries in the "Negative rights" section
of each ACL, explicitly denying the rights to the user or group,
even if entries on the accompanying "Normal rights" section of the ACL grant them permissions.; This argument is not supported for DFS files or directories,
because DFS does not implement negative ACL permissions.
-id Places the ACL entries on the Initial Container ACL of each DFS: directory, which are the only file system objects for which this
flag is supported.
-if Places the ACL entries on the Initial Object ACL of each DFS: directory, which are the only file system objects for which this
flag is supported.
-help: Prints the online help for this command. All other valid options
are ignored.

EXAMPLES

The following example adds two entries to the "Normal rights" section of the current working directory's ACL: the first entry grants "r" (read) and "l" (lookup) permissions to the group pat:friends, while the other (using the "write" shorthand) gives all permissions except "a" (administer) to the user "smith".: % fs setacl -dir . -acl pat:friends rl smith write; % fs listacl -path .
Access list for . is
Normal rights:
pat:friends rl
smith rlidwk; The following example includes the -clear flag, which removes the existing permissions (as displayed with the fs listacl command) from the current working directory's reports subdirectory and replaces them with a new set.

% fs listacl -dir reports
Access list for reports is
Normal rights:
system:authuser rl
pat:friends rlid
smith rlidwk
pat rlidwka

Negative rights:

terry rl

% fs setacl -clear -dir reports -acl pat all smith write system:anyuser rl

% fs listacl -dir reports
Access list for reports is
Normal rights:

system:anyuser rl
smith rlidwk
pat rlidwka

The following example use the -dir and -acl switches because it sets the ACL for more than one directory (both the current working directory and its public subdirectory).

% fs setacl -dir . public -acl pat:friends rli

% fs listacl -path . public
Access list for . is
Normal rights:
pat rlidwka
pat:friends rli

Access list for public is
Normal rights:

pat rlidwka
pat:friends rli

PRIVILEGE REQUIRED

The issuer must have the "a" (administer) permission on the directory's ACL, a member of the system:administrators group, or, as a special
case, must be the UID owner of the top-level directory of the volume
containing this directory. The last provision allows the UID owner of a volume to repair accidental ACL errors without requiring intervention by a member of system:administrators.

Earlier versions of OpenAFS also extended implicit administer
permission to the owner of any directory. In current versions of
OpenAFS, only the owner of the top-level directory of the volume has
this special permission.

COPYRIGHT

This documentation is covered by the IBM Public License Version 1.0.
It was converted from HTML to POD by software written by Chas Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.

docs.sk

komplexný repozitár dokumentácie

Najnavštevovanejšie