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/* Copyright © 2005-2008 Roger Leigh <rleigh@debian.org>
*
* schroot is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* schroot is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*
*********************************************************************/
#include <config.h>
#include "sbuild-chroot-block-device.h"
#include "sbuild-format-detail.h"
#include "sbuild-lock.h"
#include "sbuild-util.h"
#include <cerrno>
#include <cstring>
#include <boost/format.hpp>
using boost::format;
using namespace sbuild;
chroot_block_device_base::chroot_block_device_base ():
chroot(),
chroot_mountable(),
device()
{
}
chroot_block_device_base::~chroot_block_device_base ()
{
}
std::string const&
chroot_block_device_base::get_device () const
{
return this->device;
}
void
chroot_block_device_base::set_device (std::string const& device)
{
if (!is_absname(device))
throw error(device, DEVICE_ABS);
this->device = device;
}
std::string
chroot_block_device_base::get_path () const
{
return get_mount_location() + get_location();
}
void
chroot_block_device_base::set_mount_device (std::string const& mount_device)
{
// Setting the mount device is not permitted for block_device chroots.
}
std::string const&
chroot_block_device_base::get_mount_device () const
{
return this->device;
}
std::string const&
chroot_block_device_base::get_chroot_type () const
{
static const std::string type("block-device");
return type;
}
void
chroot_block_device_base::setup_env (environment& env)
{
chroot::setup_env(env);
chroot_mountable::setup_env(env);
env.add("CHROOT_DEVICE", get_device());
}
void
chroot_block_device_base::setup_lock (chroot::setup_type type,
bool lock,
int status)
{
/* Only lock during setup, not exec. */
if (type == EXEC_START || type == EXEC_STOP)
return;
/* Lock is preserved through the entire session. */
if ((type == SETUP_START && lock == false) ||
(type == SETUP_STOP && lock == true))
return;
try
{
if (!stat(this->device).is_block())
{
throw error(get_device(), DEVICE_NOTBLOCK);
}
else
{
sbuild::device_lock dlock(this->device);
if (lock)
{
try
{
dlock.set_lock(lock::LOCK_EXCLUSIVE, 15);
}
catch (sbuild::lock::error const& e)
{
throw error(get_device(), DEVICE_LOCK, e);
}
}
else
{
try
{
dlock.unset_lock();
}
catch (sbuild::lock::error const& e)
{
throw error(get_device(), DEVICE_UNLOCK, e);
}
}
}
}
catch (sbuild::stat::error const& e) // Failed to stat
{
// Don't throw if stopping a session and the device stat
// failed. This is because the setup scripts shouldn't fail
// to be run if the block device no longer exists, which
// would prevent the session from being ended.
if (type != SETUP_STOP)
throw;
}
}
sbuild::chroot::session_flags
chroot_block_device_base::get_session_flags () const
{
return chroot_mountable::get_session_flags();
}
void
chroot_block_device_base::get_details (format_detail& detail) const
{
this->chroot::get_details(detail);
this->chroot_mountable::get_details(detail);
if (!this->device.empty())
detail.add(_("Device"), get_device());
}
void
chroot_block_device_base::get_keyfile (keyfile& keyfile) const
{
chroot::get_keyfile(keyfile);
chroot_mountable::get_keyfile(keyfile);
keyfile::set_object_value(*this, &chroot_block_device_base::get_device,
keyfile, get_keyfile_name(), "device");
}
void
chroot_block_device_base::set_keyfile (keyfile const& keyfile,
string_list& used_keys)
{
chroot::set_keyfile(keyfile, used_keys);
chroot_mountable::set_keyfile(keyfile, used_keys);
keyfile::get_object_value(*this, &chroot_block_device_base::set_device,
keyfile, get_keyfile_name(), "device",
keyfile::PRIORITY_REQUIRED);
used_keys.push_back("device");
}
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