MagicXattrManager Class Reference

#include <magic_xattr.h>

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Collaboration diagram for MagicXattrManager:

Public Types
enum	EVisibility { kVisibilityAlways, kVisibilityNever, kVisibilityRootOnly }

Public Member Functions
	MagicXattrManager (MountPoint *mountpoint, EVisibility visibility, const std::set< std::string > &protected_xattrs, const std::set< gid_t > &privileged_xattr_gids)
BaseMagicXattr *	GetLocked (const std::string &name, PathString path, catalog::DirectoryEntry *d)
std::string	GetListString (catalog::DirectoryEntry *dirent)
void	Register (const std::string &name, BaseMagicXattr *magic_xattr)
void	Freeze ()
bool	IsPrivilegedGid (gid_t gid)
EVisibility	visibility ()
std::set< gid_t >	privileged_xattr_gids ()
MountPoint *	mount_point ()
bool	is_frozen () const

Protected Attributes
std::map< std::string, BaseMagicXattr * >	xattr_list_
MountPoint *	mount_point_
EVisibility	visibility_
const std::set< std::string >	protected_xattrs_
const std::set< gid_t >	privileged_xattr_gids_

Private Member Functions
void	SanityCheckProtectedXattrs ()

Private Attributes
bool	is_frozen_

Additional Inherited Members
Protected Member Functions inherited from SingleCopy
	SingleCopy ()

Detailed Description

This class is acting as a user entry point for magic extended attributes. It instantiates all defined attributes in the constructor. Users can:

1. Register additional attributes
2. Get a string containing zero-byte delimited list of attribute names (used in "cvmfs.cc")
3. Get an attribute by name. Specifically, get a RAII wrapper around a singleton attribute instance. This means that the attribute instance registered with the manager does not get cloned or copied inside Get(). Instead, member variables are set and the original instance is returned. A mutex prevents from race conditions in case of concurrent access.

Definition at line 170 of file magic_xattr.h.

Member Enumeration Documentation

enum MagicXattrManager::EVisibility

Enumerator
kVisibilityAlways
kVisibilityNever
kVisibilityRootOnly

Definition at line 172 of file magic_xattr.h.

Constructor & Destructor Documentation

MagicXattrManager::MagicXattrManager	(	MountPoint *	mountpoint,
		EVisibility	visibility,
		const std::set< std::string > &	protected_xattrs,
		const std::set< gid_t > &	priviledged_xattr_gids
	)

This file is part of the CernVM File System.

Definition at line 19 of file magic_xattr.cc.

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Member Function Documentation

void MagicXattrManager::Freeze ( )

inline

Freezes the current setup of MagicXattrManager. No new extended attributes can be added. Only after freezing MagicXattrManager can registered attributes be accessed.

Definition at line 194 of file magic_xattr.h.

Referenced by RegisterMagicXattrs().

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std::string MagicXattrManager::GetListString

(

catalog::DirectoryEntry *

dirent

)

Definition at line 77 of file magic_xattr.cc.

Referenced by cvmfs::cvmfs_listxattr().

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BaseMagicXattr * MagicXattrManager::GetLocked	(	const std::string &	name,
		PathString	path,
		catalog::DirectoryEntry *	d
	)

The returned BaseMagicXattr* is supposed to be wrapped by a MagicXattrRAIIWrapper

Definition at line 119 of file magic_xattr.cc.

Referenced by cvmfs::cvmfs_getxattr().

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bool MagicXattrManager::is_frozen ( ) const

inline

Definition at line 202 of file magic_xattr.h.

Referenced by BaseMagicXattr::PrepareValueFencedProtected().

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bool MagicXattrManager::IsPrivilegedGid

(

gid_t

gid

)

Definition at line 154 of file magic_xattr.cc.

Referenced by BaseMagicXattr::PrepareValueFencedProtected().

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MountPoint* MagicXattrManager::mount_point ( )

inline

Definition at line 201 of file magic_xattr.h.

Referenced by AuthzMagicXattr::GetValue(), ExternalHostMagicXattr::GetValue(), ExternalTimeoutMagicXattr::GetValue(), FqrnMagicXattr::GetValue(), HostMagicXattr::GetValue(), HostListMagicXattr::GetValue(), LHashMagicXattr::GetValue(), NCleanup24MagicXattr::GetValue(), NDirOpenMagicXattr::GetValue(), NDownloadMagicXattr::GetValue(), NIOErrMagicXattr::GetValue(), NOpenMagicXattr::GetValue(), HitrateMagicXattr::GetValue(), ProxyMagicXattr::GetValue(), ProxyListMagicXattr::GetValue(), ProxyListExternalMagicXattr::GetValue(), RepoMetainfoMagicXattr::GetValue(), RxMagicXattr::GetValue(), SpeedMagicXattr::GetValue(), TimeoutMagicXattr::GetValue(), TimeoutDirectMagicXattr::GetValue(), TimestampLastIOErrMagicXattr::GetValue(), UsedFdMagicXattr::GetValue(), UsedDirPMagicXattr::GetValue(), ExternalURLMagicXattr::GetValue(), AuthzMagicXattr::PrepareValueFenced(), CatalogCountersMagicXattr::PrepareValueFenced(), ChunkListMagicXattr::PrepareValueFenced(), ChunksMagicXattr::PrepareValueFenced(), NClgMagicXattr::PrepareValueFenced(), PubkeysMagicXattr::PrepareValueFenced(), RepoCountersMagicXattr::PrepareValueFenced(), RepoMetainfoMagicXattr::PrepareValueFenced(), RevisionMagicXattr::PrepareValueFenced(), RootHashMagicXattr::PrepareValueFenced(), and TagMagicXattr::PrepareValueFenced().

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std::set<gid_t> MagicXattrManager::privileged_xattr_gids ( )

inline

Definition at line 199 of file magic_xattr.h.

void MagicXattrManager::Register	(	const std::string &	name,
		BaseMagicXattr *	magic_xattr
	)

Registers a new extended attribute. Will fail if called after Freeze().

Definition at line 135 of file magic_xattr.cc.

Referenced by MagicXattrManager(), and RegisterMagicXattrs().

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void MagicXattrManager::SanityCheckProtectedXattrs ( )

private

Definition at line 167 of file magic_xattr.cc.

Referenced by Freeze().

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EVisibility MagicXattrManager::visibility ( )

inline

Definition at line 198 of file magic_xattr.h.

Referenced by cvmfs::cvmfs_listxattr(), and GetListString().

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Member Data Documentation

bool MagicXattrManager::is_frozen_

private

Definition at line 215 of file magic_xattr.h.

Referenced by Freeze(), is_frozen(), and Register().

MountPoint* MagicXattrManager::mount_point_

protected

Definition at line 206 of file magic_xattr.h.

Referenced by GetListString(), and mount_point().

const std::set<gid_t> MagicXattrManager::privileged_xattr_gids_

protected

Definition at line 212 of file magic_xattr.h.

Referenced by IsPrivilegedGid(), privileged_xattr_gids(), and SanityCheckProtectedXattrs().

const std::set<std::string> MagicXattrManager::protected_xattrs_

protected

Definition at line 211 of file magic_xattr.h.

Referenced by Register(), and SanityCheckProtectedXattrs().

EVisibility MagicXattrManager::visibility_

protected

Definition at line 207 of file magic_xattr.h.

Referenced by visibility().

std::map<std::string, BaseMagicXattr *> MagicXattrManager::xattr_list_

protected

Definition at line 205 of file magic_xattr.h.

Referenced by GetListString(), GetLocked(), Register(), and SanityCheckProtectedXattrs().

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The documentation for this class was generated from the following files:

• /home/sftnight/jenkins/workspace/CvmfsDoxygen/label/docker-x86_64/cvmfs/cvmfs/magic_xattr.h
• /home/sftnight/jenkins/workspace/CvmfsDoxygen/label/docker-x86_64/cvmfs/cvmfs/magic_xattr.cc