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Class ajanta.security.fileacl.FileSystemAcl 

java.lang.Object
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   +----ajanta.security.fileacl.FileAcl
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           +----ajanta.security.fileacl.FileSystemAcl
public class FileSystemAcl
extends FileAcl
This Access Control list is used by the ajanta FileSystem The rules for granting or denying access are as follows:
1. If an access control list (ACL) is associated with the file exists, then this system checks if this list contains an entry giving permission to the agent's owner for the requested operation. If so, the operation is allowed.
2. If there is no access control list (ACL) associated with a file/directory, then the system looks for the ACL of its parent directory. This rule is applied recursively, until a directory with an ACL or the root directory is reached. If no ACL is associated with the root directory, access is denied.
3. If a directory is reached with an ACL associated, this ACL is searched for the access rights given to the agent's owner. Each entry also contains an ``inheritance" right, which means that the rights given to a principal for this directory are also applicable to the files and directories contained within it if no ACL is associated with them.

Constructor Index

o FileSystemAcl(String)

Method Index

o checkPermission(URN, URN, String)
Check permission for a user
o createAclEntry(String)
Create ACL entries : read for "r","write" for "w" and inherit for "i"

Constructors

o FileSystemAcl 
 public FileSystemAcl(String root)

Methods

o createAclEntry 
 protected void createAclEntry(String line)
Create ACL entries : read for "r","write" for "w" and inherit for "i"

Overrides:
createAclEntry in class FileAcl
o checkPermission 
 public boolean checkPermission(URN userURN,
                                URN file,
                                String perm)
Check permission for a user

Overrides:
checkPermission in class FileAcl 
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