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/* Copyright © 2005-2013 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/loopback.h>
#include <sbuild/chroot/facet/session.h>
#include <sbuild/chroot/facet/session-clonable.h>
#include <sbuild/chroot/facet/source-clonable.h>
#include <sbuild/chroot/facet/mountable.h>
#ifdef SBUILD_FEATURE_UNION
#include <sbuild/chroot/facet/fsunion.h>
#endif // SBUILD_FEATURE_UNION
#include "format-detail.h"
#include "lock.h"
#include "util.h"
#include <cassert>
#include <cerrno>
#include <cstring>
#include <boost/format.hpp>
using boost::format;
using namespace sbuild;
namespace sbuild
{
namespace chroot
{
loopback::loopback ():
chroot(),
filename()
{
add_facet(facet::mountable::create());
#ifdef SBUILD_FEATURE_UNION
add_facet(facet::fsunion::create());
#endif // SBUILD_FEATURE_UNION
}
loopback::~loopback ()
{
}
loopback::loopback (const loopback& rhs):
chroot(rhs),
filename(rhs.filename)
{
}
chroot::chroot::ptr
loopback::clone () const
{
return ptr(new loopback(*this));
}
chroot::chroot::ptr
loopback::clone_session (std::string const& session_id,
std::string const& alias,
std::string const& user,
bool root) const
{
facet::session_clonable::const_ptr psess
(get_facet<facet::session_clonable>());
assert(psess);
ptr session(new loopback(*this));
psess->clone_session_setup(*this, session, session_id, alias, user, root);
return session;
}
chroot::chroot::ptr
loopback::clone_source () const
{
ptr clone(new loopback(*this));
facet::source_clonable::const_ptr psrc
(get_facet<facet::source_clonable>());
assert(psrc);
psrc->clone_source_setup(*this, clone);
return clone;
}
std::string const&
loopback::get_filename () const
{
return this->filename;
}
void
loopback::set_filename (std::string const& filename)
{
if (!is_absname(filename))
throw error(filename, FILE_ABS);
this->filename = filename;
}
std::string
loopback::get_path () const
{
facet::mountable::const_ptr pmnt
(get_facet<facet::mountable>());
std::string path(get_mount_location());
if (pmnt)
path += pmnt->get_location();
return path;
}
std::string const&
loopback::get_chroot_type () const
{
static const std::string type("loopback");
return type;
}
void
loopback::setup_env (chroot const& chroot,
environment& env) const
{
chroot::setup_env(chroot, env);
env.add("CHROOT_FILE", get_filename());
}
void
loopback::setup_lock (chroot::setup_type type,
bool lock,
int status)
{
// Check ownership and permissions.
if (type == SETUP_START && lock == true)
{
stat file_status(this->filename);
// NOTE: taken from chroot_config::check_security.
if (file_status.uid() != 0)
throw error(this->filename, FILE_OWNER);
if (file_status.check_mode(stat::PERM_OTHER_WRITE))
throw error(this->filename, FILE_PERMS);
if (!file_status.is_regular())
throw error(this->filename, FILE_NOTREG);
}
/* Create or unlink session information. */
if ((type == SETUP_START && lock == true) ||
(type == SETUP_STOP && lock == false && status == 0))
{
bool start = (type == SETUP_START);
get_facet_strict<facet::session>()->setup_session_info(start);
}
}
chroot::chroot::session_flags
loopback::get_session_flags (chroot const& chroot) const
{
return SESSION_NOFLAGS;
}
void
loopback::get_details (chroot const& chroot,
format_detail& detail) const
{
chroot::get_details(chroot, detail);
if (!this->filename.empty())
detail.add(_("File"), get_filename());
}
void
loopback::get_used_keys (string_list& used_keys) const
{
chroot::get_used_keys(used_keys);
used_keys.push_back("file");
}
void
loopback::get_keyfile (chroot const& chroot,
keyfile& keyfile) const
{
chroot::get_keyfile(chroot, keyfile);
keyfile::set_object_value(*this, &loopback::get_filename,
keyfile, get_name(), "file");
}
void
loopback::set_keyfile (chroot& chroot,
keyfile const& keyfile)
{
chroot::set_keyfile(chroot, keyfile);
keyfile::get_object_value(*this, &loopback::set_filename,
keyfile, get_name(), "file",
keyfile::PRIORITY_REQUIRED);
}
}
}
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