org.apache.hadoop.fs
Class FsShellPermissions.Chmod

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.hadoop.fs.shell.Command
          org.apache.hadoop.fs.shell.FsCommand
              org.apache.hadoop.fs.FsShellPermissions
                  org.apache.hadoop.fs.FsShellPermissions.Chmod

All Implemented Interfaces:

Configurable

Enclosing class:

org.apache.hadoop.fs.FsShellPermissions

public static class FsShellPermissions.Chmod
extends org.apache.hadoop.fs.FsShellPermissions

The pattern is almost as flexible as mode allowed by chmod shell command. The main restriction is that we recognize only rwxXt. To reduce errors we also enforce octal mode specifications of either 3 digits without a sticky bit setting or four digits with a sticky bit setting.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.fs.FsShellPermissions

FsShellPermissions.Chgrp, FsShellPermissions.Chmod, FsShellPermissions.Chown

Field Summary

static String	DESCRIPTION
static String	NAME
protected org.apache.hadoop.fs.permission.ChmodParser	pp
static String	USAGE

Fields inherited from class org.apache.hadoop.fs.shell.Command

args, err, exceptions, exitCode, name, numErrors, out, recursive

Constructor Summary

FsShellPermissions.Chmod()

Method Summary

protected void	processOptions(LinkedList<String> args) Must be implemented by commands to process the command line flags and check the bounds of the remaining arguments.
protected void	processPath(org.apache.hadoop.fs.shell.PathData item) Hook for commands to implement an operation to be applied on each path for the command.

Methods inherited from class org.apache.hadoop.fs.FsShellPermissions

registerCommands

Methods inherited from class org.apache.hadoop.fs.shell.FsCommand

getCommandName, run, runAll

Methods inherited from class org.apache.hadoop.fs.shell.Command

displayError, displayError, displayWarning, exitCodeForError, expandArgument, expandArguments, getDepth, getDescription, getName, getReplacementCommand, getUsage, isDeprecated, isRecursive, processArgument, processArguments, processNonexistentPath, processPathArgument, processPaths, processRawArguments, recursePath, run, setName, setRecursive

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

USAGE

public static final String USAGE

See Also:

Constant Field Values

DESCRIPTION

public static final String DESCRIPTION

See Also:

Constant Field Values

pp

protected org.apache.hadoop.fs.permission.ChmodParser pp

Constructor Detail

FsShellPermissions.Chmod

public FsShellPermissions.Chmod()

Method Detail

processOptions

protected void processOptions(LinkedList<String> args)
                       throws IOException

Description copied from class: org.apache.hadoop.fs.shell.Command

Must be implemented by commands to process the command line flags and check the bounds of the remaining arguments. If an IllegalArgumentException is thrown, the FsShell object will print the short usage of the command.

Overrides:

processOptions in class org.apache.hadoop.fs.shell.Command

Parameters:

args - the command line arguments

Throws:

IOException

processPath

protected void processPath(org.apache.hadoop.fs.shell.PathData item)
                    throws IOException

Description copied from class: org.apache.hadoop.fs.shell.Command

Hook for commands to implement an operation to be applied on each path for the command. Note implementation of this method is optional if earlier methods in the chain handle the operation.

Overrides:

processPath in class org.apache.hadoop.fs.shell.Command

Parameters:

item - a PathData object

Throws:

IOException - if anything else goes wrong in the user-implementation