sbuild 1.4.23
Public Member Functions | Protected Member Functions | Private Attributes | Friends
sbuild::chroot_btrfs_snapshot Class Reference

A chroot stored on an BTRFS logical volume (LV). More...

#include <sbuild-chroot-btrfs-snapshot.h>

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List of all members.

Public Member Functions

virtual ~chroot_btrfs_snapshot ()
 The destructor.
virtual chroot::ptr clone () const
 Copy the chroot.
virtual chroot::ptr clone_session (std::string const &session_id, std::string const &user, bool root) const
 Create a session chroot.
virtual chroot::ptr clone_source () const
 Create a source chroot.
std::string const & get_source_subvolume () const
 Get the source subvolume path.
void set_source_subvolume (std::string const &source_subvolume)
 Set the source subvolume path.
std::string const & get_snapshot_directory () const
 Get the snapshot directory.
void set_snapshot_directory (std::string const &snapshot_directory)
 Set the snapshot directory.
std::string const & get_snapshot_name () const
 Get the snapshot name.
void set_snapshot_name (std::string const &snapshot_name)
 Set the snapshot name.
virtual std::string const & get_chroot_type () const
 Get the type of the chroot.
virtual std::string get_path () const
 Get the path to the chroot.
virtual void setup_env (chroot const &chroot, environment &env) const
 Set environment.
virtual session_flags get_session_flags (chroot const &chroot) const
 Get the session flags of the chroot.

Protected Member Functions

 chroot_btrfs_snapshot ()
 The constructor.
 chroot_btrfs_snapshot (const chroot_btrfs_snapshot &rhs)
 The copy constructor.
virtual void setup_lock (chroot::setup_type type, bool lock, int status)
 Unlock a chroot during setup.
virtual void get_details (chroot const &chroot, format_detail &detail) const
 Get detailed information about the chroot for output.
virtual void get_keyfile (chroot const &chroot, keyfile &keyfile) const
 Copy the chroot properties into a keyfile.
virtual void set_keyfile (chroot &chroot, keyfile const &keyfile, string_list &used_keys)
 Set the chroot properties from a keyfile.

Private Attributes

std::string source_subvolume
 Btrfs source subvolume.
std::string snapshot_directory
 Btrfs snapshot path.
std::string snapshot_name
 Btrfs snapshot name.

Friends

class chroot

Detailed Description

A chroot stored on an BTRFS logical volume (LV).

A snapshot LV will be created and mounted on demand.


Member Function Documentation

sbuild::chroot::ptr chroot_btrfs_snapshot::clone ( ) const [virtual]

Copy the chroot.

This is a virtual copy constructor.

Returns:
a shared_ptr to the new copy of the chroot.

Implements sbuild::chroot.

References chroot_btrfs_snapshot().

Referenced by clone_source().

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sbuild::chroot::ptr chroot_btrfs_snapshot::clone_session ( std::string const &  name,
std::string const &  user,
bool  root 
) const [virtual]

Create a session chroot.

Parameters:
namethe identifier (session_id) for the new session.
userthe user creating the session.
roottrue if the user has root access, otherwise false.
Returns:
a session chroot.

Implements sbuild::chroot.

References chroot_btrfs_snapshot().

sbuild::chroot::ptr chroot_btrfs_snapshot::clone_source ( ) const [virtual]

Create a source chroot.

Returns:
a source chroot.

Implements sbuild::chroot.

References clone().

std::string const & chroot_btrfs_snapshot::get_chroot_type ( ) const [virtual]

Get the type of the chroot.

Returns:
the chroot type.

Implements sbuild::chroot.

void chroot_btrfs_snapshot::get_details ( chroot const &  chroot,
format_detail detail 
) const [protected, virtual]

Get detailed information about the chroot for output.

Parameters:
chrootthe chroot to use.
detailthe details to output to.

Implements sbuild::chroot.

References sbuild::_(), sbuild::format_detail::add(), get_snapshot_directory(), get_snapshot_name(), and get_source_subvolume().

void chroot_btrfs_snapshot::get_keyfile ( chroot const &  chroot,
keyfile keyfile 
) const [protected, virtual]

Copy the chroot properties into a keyfile.

The keyfile group with the name of the chroot will be set; if it already exists, it will be removed before setting it.

Parameters:
chrootthe chroot to use.
keyfilethe keyfile to use.

Implements sbuild::chroot.

References sbuild::chroot::get_name(), get_snapshot_directory(), get_snapshot_name(), get_source_subvolume(), and sbuild::basic_keyfile< K, P >::set_object_value().

std::string chroot_btrfs_snapshot::get_path ( ) const [virtual]

Get the path to the chroot.

This is the absolute path to the root of the chroot, and is typically the same as the mount location and location concatenated together, but is overridden by the chroot type if required.

Returns:
the path.

Implements sbuild::chroot.

References sbuild::chroot::get_mount_location().

sbuild::chroot::session_flags chroot_btrfs_snapshot::get_session_flags ( chroot const &  chroot) const [virtual]

Get the session flags of the chroot.

These determine how the Session controlling the chroot will operate.

Parameters:
chrootthe chroot to use.
Returns:
the session flags.

Implements sbuild::chroot.

References sbuild::chroot::SESSION_NOFLAGS, and sbuild::chroot::SESSION_PURGE.

std::string const & chroot_btrfs_snapshot::get_snapshot_directory ( ) const

Get the snapshot directory.

Returns:
the directory.

References snapshot_directory.

Referenced by get_details(), get_keyfile(), and setup_env().

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std::string const & chroot_btrfs_snapshot::get_snapshot_name ( ) const

Get the snapshot name.

This is used by "btrfs subvolume snapshot", and is the full path to the snapshot.

Returns:
the name.

References snapshot_name.

Referenced by get_details(), get_keyfile(), and setup_env().

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std::string const & chroot_btrfs_snapshot::get_source_subvolume ( ) const

Get the source subvolume path.

This is used by "btrfs subvolume snapshot".

Returns:
the source subvolume.

References source_subvolume.

Referenced by sbuild::chroot_directory::chroot_directory(), get_details(), get_keyfile(), and setup_env().

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void chroot_btrfs_snapshot::set_keyfile ( chroot chroot,
keyfile const &  keyfile,
string_list used_keys 
) [protected, virtual]

Set the chroot properties from a keyfile.

The chroot name must have previously been set, so that the correct keyfile group may be determined.

Parameters:
chrootthe chroot to use.
keyfilethe keyfile to get the properties from.
used_keysa list of the keys used will be set.

Implements sbuild::chroot.

References sbuild::chroot::get_name(), sbuild::basic_keyfile< K, P >::get_object_value(), sbuild::keyfile_base::PRIORITY_DISALLOWED, sbuild::keyfile_base::PRIORITY_REQUIRED, set_snapshot_directory(), set_snapshot_name(), and set_source_subvolume().

void chroot_btrfs_snapshot::set_snapshot_directory ( std::string const &  snapshot_directory)

Set the snapshot directory.

Parameters:
snapshot_directorythe snapshot directory.

References sbuild::chroot::DIRECTORY_ABS, sbuild::is_absname(), snapshot_directory, and source_subvolume.

Referenced by set_keyfile().

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void chroot_btrfs_snapshot::set_snapshot_name ( std::string const &  snapshot_name)

Set the snapshot name.

This is used by "btrfs subvolume snapshot", and is the full path to the snapshot.

Parameters:
snapshot_namethe snapshot name.

References sbuild::chroot::DIRECTORY_ABS, sbuild::is_absname(), snapshot_name, and source_subvolume.

Referenced by set_keyfile().

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void chroot_btrfs_snapshot::set_source_subvolume ( std::string const &  source_subvolume)

Set the source subvolume path.

This is used by "btrfs subvolume snapshot".

Parameters:
source_subvolumethe source subvolume.

References sbuild::chroot::DIRECTORY_ABS, sbuild::is_absname(), and source_subvolume.

Referenced by set_keyfile().

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void chroot_btrfs_snapshot::setup_env ( chroot const &  chroot,
environment env 
) const [virtual]

Set environment.

Set the environment that the setup scripts will see during execution.

Parameters:
chrootthe chroot to use.
envthe environment to set.

Implements sbuild::chroot.

References sbuild::environment::add(), get_snapshot_directory(), get_snapshot_name(), and get_source_subvolume().

void chroot_btrfs_snapshot::setup_lock ( chroot::setup_type  type,
bool  lock,
int  status 
) [protected, virtual]

Unlock a chroot during setup.

The locking technique (if any) may vary depending upon the chroot type and setup stage. For example, during creation of an LVM snapshot a block device might require locking, but afterwards this will change to the new block device.

An error will be thrown on failure.

Parameters:
typethe type of setup being performed
locktrue to lock, false to unlock
statusthe exit status of the setup commands (0 for success, nonzero for failure).

Implements sbuild::chroot.

References sbuild::chroot::setup_session_info(), sbuild::chroot::SETUP_START, and sbuild::chroot::SETUP_STOP.


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