Package org.apache.hadoop.fs.permission

Class AclUtil

java.lang.Object

org.apache.hadoop.fs.permission.AclUtil

@LimitedPrivate({"HDFS","MapReduce"})
@Unstable
public final class AclUtil
extends java.lang.Object

AclUtil contains utility methods for manipulating ACLs.

Method Summary

Modifier and Type	Method	Description
static java.util.List<AclEntry>	getAclFromPermAndEntries(FsPermission perm, java.util.List<AclEntry> entries)	Given permissions and extended ACL entries, returns the full logical ACL.
static java.util.List<AclEntry>	getMinimalAcl(FsPermission perm)	Translates the given permission bits to the equivalent minimal ACL.
static boolean	isMinimalAcl(java.util.List<AclEntry> entries)	Checks if the given entries represent a minimal ACL (contains exactly 3 entries).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getAclFromPermAndEntries

public static java.util.List<AclEntry> getAclFromPermAndEntries(FsPermission perm,
                                                                java.util.List<AclEntry> entries)

Given permissions and extended ACL entries, returns the full logical ACL.

Parameters:

perm - FsPermission containing permissions

entries - List<AclEntry> containing extended ACL entries

Returns:

List<AclEntry> containing full logical ACL

getMinimalAcl

public static java.util.List<AclEntry> getMinimalAcl(FsPermission perm)

Translates the given permission bits to the equivalent minimal ACL.

Parameters:

perm - FsPermission to translate

Returns:

List<AclEntry> containing exactly 3 entries representing the owner, group and other permissions

isMinimalAcl

public static boolean isMinimalAcl(java.util.List<AclEntry> entries)

Checks if the given entries represent a minimal ACL (contains exactly 3 entries).

Parameters:

entries - List<AclEntry> entries to check

Returns:

boolean true if the entries represent a minimal ACL