MountEntry.cpp

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/* 
 * Confdump-Agent - Dump static and runtime system configuration
 * Copyright (C) 2009-2012  Straton IT, SAS
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 * 
 * This program 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/>.
 */

extern "C"
{
    #include <mntent.h>
    #include <errno.h>
}

#include "Confdump/System/LinuxDumper.hpp"
#include "Confdump/System/Linux/MountEntry.hpp"

using boost::shared_ptr;

namespace Confdump
{

namespace System
{

namespace Linux
{

MountEntry::MountEntry( const struct mntent *entry )
 :  fileSystem_( QString::fromLocal8Bit( entry->mnt_fsname ) ),
    mountPoint_( QString::fromLocal8Bit( entry->mnt_dir ) ),
    type_( QString::fromLocal8Bit( entry->mnt_type ) ),
    options_( QString::fromLocal8Bit( entry->mnt_opts ) ),
    checkFrequency_( entry->mnt_freq ),
    checkPassNumber_( entry->mnt_passno )
{
}

MountEntry::~MountEntry()
{
}

QString MountEntry::fileSystem() const
{
    return fileSystem_;
}

QString MountEntry::mountPoint() const
{
    return mountPoint_;
}

QString MountEntry::type() const
{
    return type_;
}

QString MountEntry::options() const
{
    return options_;
}

std::vector< shared_ptr< MountEntry > > MountEntry::allMountEntriesFrom( boost::shared_ptr<LinuxDumper> driver, const boost::filesystem::path &fstab_path )
{
    // FIXME: this reads the file twice, so it could be modified meanwhile. The
    // right way would be to write the slurped file to a temporary location and
    // to setmntent() the result. However, we don't have temporary files OO
    // handling so far.

    driver->systemContext().slurpConfigurationFile( fstab_path, "CD_MountEntry" );
    FILE *fstab = setmntent( fstab_path.string().c_str(), "r" );
    if ( !fstab )
    {
        using namespace boost::system;
        throw system_error( errno, system_category, "setmntent " + fstab_path.string() );
    }

    std::vector< shared_ptr< MountEntry > > mountEntries;
    while ( struct mntent *systemEntry = getmntent( fstab ) )
    {
        shared_ptr< MountEntry > entry( new MountEntry( systemEntry ) );
        mountEntries.push_back( entry );
    }

    return mountEntries;
}

} // ns Linux
} // ns System
} // ns Confdump