sbuild::chroot Class Reference

Common chroot data. More...

#include <sbuild-chroot.h>

Inheritance diagram for sbuild::chroot:

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List of all members.

Public Types

enum  setup_type {
  SETUP_START, SETUP_RECOVER, SETUP_STOP, EXEC_START,
  EXEC_STOP
}
 Type of setup to perform. More...
enum  session_flags { SESSION_NOFLAGS = 0, SESSION_CREATE = 1 << 0, SESSION_CLONE = 1 << 1, SESSION_PURGE = 1 << 2 }
 Chroot session properties. More...
enum  error_code {
  CHROOT_CREATE, CHROOT_DEVICE, CHROOT_TYPE, DEVICE_ABS,
  DEVICE_LOCK, DEVICE_NOTBLOCK, DEVICE_UNLOCK, FILE_ABS,
  FILE_LOCK, FILE_NOTREG, FILE_OWNER, FILE_PERMS,
  FILE_UNLOCK, LOCATION_ABS, SESSION_UNLINK, SESSION_WRITE
}
 Error codes. More...
typedef custom_error< error_codeerror
 Exception type.
typedef std::tr1::shared_ptr
< chroot
ptr
 A shared_ptr to a chroot object.

Public Member Functions

virtual ~chroot ()
 The destructor.
virtual ptr clone () const =0
 Copy the chroot.
std::string const & get_name () const
 Get the name of the chroot.
void set_name (std::string const &name)
 Set the name of the chroot.
std::string const & get_description () const
 Get the description of the chroot.
void set_description (std::string const &description)
 Set the description of the chroot.
virtual std::string const & get_mount_location () const
 Get the mount location of the chroot.
void set_mount_location (std::string const &location)
 Set the mount location of the chroot.
virtual std::string const & get_location () const
 Get the location of the chroot.
virtual std::string get_path () const
 Get the path to the chroot.
virtual std::string const & get_mount_device () const
 Get the mount device of the chroot.
void set_mount_device (std::string const &device)
 Set the mount device of the chroot.
unsigned int get_priority () const
 Get the priority of the chroot.
void set_priority (unsigned int priority)
 Set the priority of a chroot.
string_list const & get_users () const
 Get the users allowed to access the chroot.
void set_users (string_list const &users)
 Set the users allowed to access the chroot.
string_list const & get_groups () const
 Get the groups allowed to access the chroot.
void set_groups (string_list const &groups)
 Set the users allowed to access the chroot.
string_list const & get_root_users () const
 Get the users allowed to access the chroot as root.
void set_root_users (string_list const &users)
 Set the users allowed to access the chroot as root.
string_list const & get_root_groups () const
 Get the groups allowed to access the chroot as root.
void set_root_groups (string_list const &groups)
 Set the groups allowed to access the chroot as root.
string_list const & get_aliases () const
 Get the aliases of the chroot.
void set_aliases (string_list const &aliases)
 Set the aliases of the chroot.
regex const & get_environment_filter () const
 Get the environment filter of the chroot.
void set_environment_filter (regex const &environment_filter)
 Get the environment filter of the chroot.
bool get_active () const
 Get the activity status of the chroot.
void set_active (bool active)
 Set the activity status of the chroot.
bool get_original () const
 Get the originality of the chroot.
void set_original (bool original)
 Set the originality of the chroot.
bool get_run_setup_scripts () const
 Check if chroot setup scripts will be run.
void set_run_setup_scripts (bool run_setup_scripts)
 Set whether chroot setup scripts will be run.
bool get_run_exec_scripts () const
 Check if chroot exec scripts will be run.
void set_run_exec_scripts (bool run_exec_scripts)
 Set whether chroot exec scripts will be run.
std::string const & get_script_config () const
 Get the script configuration file for the chroot.
void set_script_config (std::string const &script_config)
 Set the script configuration file for the chroot.
string_list const & get_command_prefix () const
 Get the command_prefix for the chroot.
void set_command_prefix (string_list const &command_prefix)
 Set the command_prefix for the chroot.
personality const & get_persona () const
 Get the process execution domain for the chroot.
void set_persona (personality const &persona)
 Set the process execution domain for the chroot.
virtual std::string const & get_chroot_type () const =0
 Get the type of the chroot.
virtual void setup_env (environment &env)
 Set environment.
void lock (setup_type type)
 Lock a chroot during setup.
void unlock (setup_type type, int status)
 Unlock a chroot during setup.
virtual session_flags get_session_flags () const =0
 Get the session flags of the chroot.

Static Public Member Functions

static ptr create (std::string const &type)
 Create a chroot.

Protected Member Functions

 chroot ()
 The constructor.
virtual void set_location (std::string const &location)
 Set the location of the chroot.
virtual void setup_session_info (bool start)
 Set up persistent session information.
virtual void setup_lock (setup_type type, bool lock, int status)=0
 Unlock a chroot during setup.
virtual void get_details (format_detail &detail) const
 Get detailed information about the chroot for output.
void print_details (std::ostream &stream) const
 Print detailed information about the chroot to a stream.
virtual void get_keyfile (keyfile &keyfile) const
 Copy the chroot properties into a keyfile.
virtual void set_keyfile (keyfile const &keyfile, string_list &used_keys)
 Set the chroot properties from a keyfile.

Private Attributes

std::string name
 Chroot name.
std::string description
 Chroot description.
unsigned int priority
 Chroot prioroty.
string_list users
 Users allowed to access the chroot.
string_list groups
 Groups allowed to access the chroot.
string_list root_users
 Users allowed to access the chroot as root.
string_list root_groups
 Groups allowed to access the chroot as root.
string_list aliases
 Alternative names for the chroot.
regex environment_filter
 Environment filter regex.
std::string mount_location
 Location to mount chroot in the filesystem (if any).
std::string location
 Location inside the mount location root.
std::string mount_device
 Block device to mount (if any).
bool active
 Chroot activity status.
bool original
 Was the chroot automatically generated?
bool run_setup_scripts
 Run chroot setup scripts?
bool run_exec_scripts
 Run chroot exec scripts?
std::string script_config
 Configuration of the setup and exec scripts.
string_list command_prefix
 Command prefix.
personality persona
 Process execution domain (Linux only).

Friends

std::ostream & operator<< (std::ostream &stream, ptr const &rhs)
 Print detailed information about the chroot to a stream.
keyfile const & operator>> (keyfile const &keyfile, ptr &rhs)
 Chroot initialisation from a keyfile.
keyfileoperator<< (keyfile &keyfile, ptr const &rhs)
 Chroot serialisation to a keyfile.


Detailed Description

Common chroot data.

This class contains all of the metadata associated with a single chroot, for all chroot types. This is the in-core representation of a chroot definition in the configuration file, and may be initialised directly from an open keyfile.


Member Typedef Documentation

Exception type.

typedef std::tr1::shared_ptr<chroot> sbuild::chroot::ptr

A shared_ptr to a chroot object.


Member Enumeration Documentation

Error codes.

Enumerator:
CHROOT_CREATE  Chroot creation failed.
CHROOT_DEVICE  Chroot device name not set.
CHROOT_TYPE  Unknown chroot type.
DEVICE_ABS  Device must have an absolute path.
DEVICE_LOCK  Failed to lock device.
DEVICE_NOTBLOCK  File is not a block device.
DEVICE_UNLOCK  Failed to unlock device.
FILE_ABS  File must have an absolute path.
FILE_LOCK  Failed to acquire lock.
FILE_NOTREG  File is not a regular file.
FILE_OWNER  File is not owned by user root.
FILE_PERMS  File has write permissions for others.
FILE_UNLOCK  Failed to discard lock.
LOCATION_ABS  Location must have an absolute path.
SESSION_UNLINK  Failed to unlink session file.
SESSION_WRITE  Failed to write session file.

Chroot session properties.

Enumerator:
SESSION_NOFLAGS  No flags are set.
SESSION_CREATE  The chroot supports session creation.
SESSION_CLONE  The chroot supports cloning.
SESSION_PURGE  The chroot should be purged.

Type of setup to perform.

Enumerator:
SETUP_START  Activate a chroot.
SETUP_RECOVER  Reactivate a chroot.
SETUP_STOP  Deactivate a chroot.
EXEC_START  Start executing a command in an active chroot.
EXEC_STOP  End executing a command in an active chroot.


Constructor & Destructor Documentation

sbuild::chroot::chroot (  )  [protected]

The constructor.

sbuild::chroot::~chroot (  )  [virtual]

The destructor.


Member Function Documentation

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

Copy the chroot.

This is a virtual copy constructor.

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

Implemented in sbuild::chroot_block_device, sbuild::chroot_directory, sbuild::chroot_file, sbuild::chroot_loopback, sbuild::chroot_lvm_snapshot, and sbuild::chroot_plain.

sbuild::chroot::ptr sbuild::chroot::create ( std::string const &  type  )  [static]

Create a chroot.

This is a factory function.

Parameters:
type the type of chroot to create.
Returns:
a shared_ptr to the new chroot.

References CHROOT_CREATE, and CHROOT_TYPE.

Referenced by sbuild::chroot_config::load_keyfile().

bool sbuild::chroot::get_active (  )  const

string_list const & sbuild::chroot::get_aliases (  )  const

Get the aliases of the chroot.

These are alternative names for the chroot.

Returns:
a list of names.

References aliases.

Referenced by get_details(), and get_keyfile().

virtual std::string const& sbuild::chroot::get_chroot_type (  )  const [pure virtual]

string_list const & sbuild::chroot::get_command_prefix (  )  const

Get the command_prefix for the chroot.

This is a command to prefix to any command run in the chroot.

Returns:
the command prefix.

References command_prefix.

Referenced by get_details(), and get_keyfile().

std::string const & sbuild::chroot::get_description (  )  const

Get the description of the chroot.

Returns:
the description.

References description.

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

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

regex const & sbuild::chroot::get_environment_filter (  )  const

Get the environment filter of the chroot.

This is a POSIX extended regular expression used to remove insecure environment variables from the chroot environment.

Returns:
the filter

References environment_filter.

Referenced by get_details(), and get_keyfile().

string_list const & sbuild::chroot::get_groups (  )  const

Get the groups allowed to access the chroot.

Returns:
a list of groups.

References groups.

Referenced by get_details(), and get_keyfile().

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

std::string const & sbuild::chroot::get_location (  )  const [virtual]

Get the location of the chroot.

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

Returns:
the mount location.

Reimplemented in sbuild::chroot_directory, and sbuild::chroot_mountable.

References location.

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

std::string const & sbuild::chroot::get_mount_device (  )  const [virtual]

Get the mount device of the chroot.

Returns:
the device.

Reimplemented in sbuild::chroot_block_device, sbuild::chroot_loopback, sbuild::chroot_lvm_snapshot, and sbuild::chroot_mountable.

References mount_device.

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

std::string const & sbuild::chroot::get_mount_location (  )  const [virtual]

Get the mount location of the chroot.

Returns:
the mount location.

References mount_location.

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

std::string const & sbuild::chroot::get_name (  )  const

bool sbuild::chroot::get_original (  )  const

Get the originality of the chroot.

Returns:
true if original, false if generated.

References original.

std::string sbuild::chroot::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.

Reimplemented in sbuild::chroot_directory.

References get_location(), and get_mount_location().

Referenced by get_details(), and setup_env().

personality const & sbuild::chroot::get_persona (  )  const

Get the process execution domain for the chroot.

Returns:
the personality.

References persona.

Referenced by get_details(), and get_keyfile().

unsigned int sbuild::chroot::get_priority (  )  const

Get the priority of the chroot.

This is a number indicating whether than a ditribution is older than another.

Returns:
the priority.

References priority.

Referenced by get_details(), and get_keyfile().

string_list const & sbuild::chroot::get_root_groups (  )  const

Get the groups allowed to access the chroot as root.

Members of these groups can switch to root without authenticating themselves.

Returns:
a list of groups.

References root_groups.

Referenced by get_details(), and get_keyfile().

string_list const & sbuild::chroot::get_root_users (  )  const

Get the users allowed to access the chroot as root.

Members of these users can switch to root without authenticating themselves.

Returns:
a list of users.

References root_users.

Referenced by get_details(), and get_keyfile().

bool sbuild::chroot::get_run_exec_scripts (  )  const

Check if chroot exec scripts will be run.

Returns:
true if exec scripts will be run, otherwise false.

References run_exec_scripts.

Referenced by get_details(), and get_keyfile().

bool sbuild::chroot::get_run_setup_scripts (  )  const

Check if chroot setup scripts will be run.

Returns:
true if setup scripts will be run, otherwise false.

References run_setup_scripts.

Referenced by get_details(), get_keyfile(), sbuild::chroot_directory::get_path(), sbuild::chroot_directory::get_session_flags(), sbuild::session::run_impl(), and sbuild::chroot_directory::setup_lock().

std::string const & sbuild::chroot::get_script_config (  )  const

Get the script configuration file for the chroot.

This is a filename, either relative to the configured pkgsysconfdir or an absolute path.

Returns:
the configuration file name.

References script_config.

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

virtual session_flags sbuild::chroot::get_session_flags (  )  const [pure virtual]

Get the session flags of the chroot.

These determine how the Session controlling the chroot will operate.

Returns:
the session flags.

Implemented in sbuild::chroot_block_device, sbuild::chroot_directory, sbuild::chroot_file, sbuild::chroot_loopback, sbuild::chroot_lvm_snapshot, sbuild::chroot_mountable, and sbuild::chroot_source.

Referenced by get_details(), and setup_env().

string_list const & sbuild::chroot::get_users (  )  const

Get the users allowed to access the chroot.

Returns:
a list of users.

References users.

Referenced by get_details(), and get_keyfile().

void sbuild::chroot::lock ( setup_type  type  ) 

Lock 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:
type the type of setup being performed

References setup_lock().

Referenced by setup_session_info().

void sbuild::chroot::print_details ( std::ostream &  stream  )  const [protected]

Print detailed information about the chroot to a stream.

The information is printed in plain text with one line per property.

Parameters:
stream the stream to output to.

References active, and get_details().

void sbuild::chroot::set_active ( bool  active  ) 

Set the activity status of the chroot.

Parameters:
active true if active, false if inactive

Referenced by set_keyfile().

void sbuild::chroot::set_aliases ( string_list const &  aliases  ) 

Set the aliases of the chroot.

These are alternative names for the chroot.

Parameters:
aliases a list of names.

Referenced by set_keyfile().

void sbuild::chroot::set_command_prefix ( string_list const &  command_prefix  ) 

Set the command_prefix for the chroot.

This is a command to prefix to any command run in the chroot.

Parameters:
command_prefix the command prefix.

Referenced by set_keyfile().

void sbuild::chroot::set_description ( std::string const &  description  ) 

Set the description of the chroot.

Parameters:
description the description.

Referenced by set_keyfile().

void sbuild::chroot::set_environment_filter ( regex const &  environment_filter  ) 

Get the environment filter of the chroot.

This is a POSIX extended regular expression used to remove insecure environment variables from the chroot environment.

Parameters:
environment_filter the filter.

Referenced by set_keyfile().

void sbuild::chroot::set_groups ( string_list const &  groups  ) 

Set the users allowed to access the chroot.

Parameters:
groups a list of groups.

Referenced by set_keyfile().

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

void sbuild::chroot::set_location ( std::string const &  location  )  [protected, virtual]

Set the location of the chroot.

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

Parameters:
location the mount location.

Reimplemented in sbuild::chroot_directory, and sbuild::chroot_mountable.

References sbuild::is_absname(), and LOCATION_ABS.

void sbuild::chroot::set_mount_device ( std::string const &  device  ) 

Set the mount device of the chroot.

Parameters:
device the device.

References DEVICE_ABS, sbuild::is_absname(), and mount_device.

Referenced by set_keyfile().

void sbuild::chroot::set_mount_location ( std::string const &  location  ) 

Set the mount location of the chroot.

Parameters:
location the mount location.

References sbuild::is_absname(), LOCATION_ABS, and mount_location.

Referenced by set_keyfile().

void sbuild::chroot::set_name ( std::string const &  name  ) 

Set the name of the chroot.

Parameters:
name the name.

void sbuild::chroot::set_original ( bool  original  ) 

Set the originality of the chroot.

Parameters:
original true if original, false if geneated.

void sbuild::chroot::set_persona ( personality const &  persona  ) 

Set the process execution domain for the chroot.

Parameters:
persona the personality.

Referenced by set_keyfile().

void sbuild::chroot::set_priority ( unsigned int  priority  ) 

Set the priority of a chroot.

This is a number indicating whether a distribution is older than another. For example, "oldstable" and "oldstable-security" might be 0, while "stable" and "stable-security" 1, "testing" 2 and "unstable" 3. The values are not important, but the difference between them is.

Parameters:
priority the priority.

Referenced by set_keyfile().

void sbuild::chroot::set_root_groups ( string_list const &  groups  ) 

Set the groups allowed to access the chroot as root.

Members of these groups can switch to root without authenticating themselves.

Parameters:
groups a list of groups.

References root_groups.

Referenced by set_keyfile().

void sbuild::chroot::set_root_users ( string_list const &  users  ) 

Set the users allowed to access the chroot as root.

Members of these users can switch to root without authenticating themselves.

Parameters:
users a list of users.

References root_users.

Referenced by set_keyfile().

void sbuild::chroot::set_run_exec_scripts ( bool  run_exec_scripts  ) 

Set whether chroot exec scripts will be run.

Parameters:
run_exec_scripts true if exec scripts will be run, otherwise false.

Referenced by sbuild::chroot_file::chroot_file(), sbuild::chroot_lvm_snapshot::chroot_lvm_snapshot(), and set_keyfile().

void sbuild::chroot::set_run_setup_scripts ( bool  run_setup_scripts  ) 

Set whether chroot setup scripts will be run.

Parameters:
run_setup_scripts true if setup scripts will be run, otherwise false.

Referenced by sbuild::chroot_file::chroot_file(), sbuild::chroot_lvm_snapshot::chroot_lvm_snapshot(), and set_keyfile().

void sbuild::chroot::set_script_config ( std::string const &  script_config  ) 

Set the script configuration file for the chroot.

This is a filename, either relative to the configured pkgsysconfdir or an absolute path.

Parameters:
script_config the script configuration file.

Referenced by set_keyfile().

void sbuild::chroot::set_users ( string_list const &  users  ) 

Set the users allowed to access the chroot.

Parameters:
users a list of users.

Referenced by set_keyfile().

void sbuild::chroot::setup_env ( environment env  )  [virtual]

virtual void sbuild::chroot::setup_lock ( setup_type  type,
bool  lock,
int  status 
) [protected, pure 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:
type the type of setup being performed
lock true to lock, false to unlock
status the exit status of the setup commands (0 for success, nonzero for failure).

Implemented in sbuild::chroot_block_device, sbuild::chroot_directory, sbuild::chroot_file, sbuild::chroot_loopback, and sbuild::chroot_lvm_snapshot.

Referenced by lock(), and unlock().

void sbuild::chroot::setup_session_info ( bool  start  )  [protected, virtual]

void sbuild::chroot::unlock ( setup_type  type,
int  status 
)

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:
type the type of setup being performed
status the exit status of the setup commands (0 for success, nonzero for failure).

References setup_lock().


Friends And Related Function Documentation

keyfile& operator<< ( keyfile keyfile,
ptr const &  rhs 
) [friend]

Chroot serialisation to a keyfile.

std::ostream& operator<< ( std::ostream &  stream,
ptr const &  rhs 
) [friend]

Print detailed information about the chroot to a stream.

The information is printed in plain text with one line per property.

Parameters:
stream the stream to output to.
rhs the chroot to output.
Returns:
the stream.

keyfile const& operator>> ( keyfile const &  keyfile,
ptr rhs 
) [friend]

Chroot initialisation from a keyfile.


Member Data Documentation

bool sbuild::chroot::active [private]

Chroot activity status.

Referenced by get_active(), and print_details().

Alternative names for the chroot.

Referenced by sbuild::chroot_source::clone_source_setup(), and get_aliases().

Command prefix.

Referenced by get_command_prefix().

std::string sbuild::chroot::description [private]

Chroot description.

Referenced by get_description().

Environment filter regex.

Referenced by get_environment_filter().

Groups allowed to access the chroot.

Referenced by get_groups().

std::string sbuild::chroot::location [private]

Location inside the mount location root.

Referenced by get_location().

std::string sbuild::chroot::mount_device [private]

Block device to mount (if any).

Referenced by get_mount_device(), and set_mount_device().

std::string sbuild::chroot::mount_location [private]

Location to mount chroot in the filesystem (if any).

Referenced by get_mount_location(), and set_mount_location().

std::string sbuild::chroot::name [private]

Chroot name.

Referenced by get_name().

bool sbuild::chroot::original [private]

Was the chroot automatically generated?

Referenced by get_original().

Process execution domain (Linux only).

Referenced by get_persona().

unsigned int sbuild::chroot::priority [private]

Chroot prioroty.

Referenced by get_priority().

Groups allowed to access the chroot as root.

Referenced by get_root_groups(), and set_root_groups().

Users allowed to access the chroot as root.

Referenced by get_root_users(), and set_root_users().

Run chroot exec scripts?

Referenced by get_run_exec_scripts().

Run chroot setup scripts?

Referenced by get_run_setup_scripts().

std::string sbuild::chroot::script_config [private]

Configuration of the setup and exec scripts.

Referenced by get_script_config().

Users allowed to access the chroot.

Referenced by get_users().


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

Generated on Sun Mar 22 22:18:22 2009 for sbuild by  doxygen 1.5.8