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/*
This file is part of the Opie Project
=. Copyright (C) 2004-2005 Michael 'Mickey' Lauer <mickey@Vanille.de>
.=l. Copyright (C) The Opie Team <opie-devel@handhelds.org>
.>+-=
_;:, .> :=|. This program is free software; you can
.> <`_, > . <= redistribute it and/or modify it under
:`=1 )Y*s>-.-- : the terms of the GNU Library General Public
.="- .-=="i, .._ License as published by the Free Software
- . .-<_> .<> Foundation; version 2 of the License.
._= =} :
.%`+i> _;_.
.i_,=:_. -<s. 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
..}^=.= = ; Library General Public License for more
++= -. .` .: details.
: = ...= . :.=-
-. .:....=;==+<; You should have received a copy of the GNU
-_. . . )=. = Library General Public License along with
-- :-=` this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "ofilenotify.h"
using namespace Opie::Core;
/* OPIE */
/* QT */
#include <qobject.h>
#include <qsocketnotifier.h>
#include <qsignal.h>
#include <qintdict.h>
#include <qdir.h>
/* STD */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
static QIntDict<OFileNotification> notification_list;
QSocketNotifier* OFileNotification::_sn;
int OFileNotification::_fd = -1;
#define INOTIFY_DEVICE "/dev/inotify"
namespace Opie {
namespace Core {
OFileNotification::OFileNotification( QObject* parent, const char* name )
:QObject( parent, name ), _active( false ), _multi( true )
{
qDebug( "OFileNotification::OFileNotification()" );
}
OFileNotification::~OFileNotification()
{
stop();
qDebug( "OFileNotification::~OFileNotification()" );
}
bool OFileNotification::isActive() const
{
return _active;
}
int OFileNotification::watch( const QString& path, bool sshot, OFileNotificationType type )
{
if ( QFile::exists( path ) )
{
if ( notification_list.isEmpty() )
{
OFileNotification::registerEventHandler();
}
struct inotify_watch_request iwr;
::memset( &iwr, 0, sizeof iwr );
iwr.name = const_cast<char*>( (const char*) path );
iwr.mask = type;
_wd = ::ioctl( OFileNotification::_fd, INOTIFY_WATCH, &iwr );
if ( _wd < 0 )
{
qWarning( "OFileNotification::watch(): inotify can't watch '%s': %s.", (const char*) path, strerror( errno ) );
return -1;
}
notification_list.insert( _wd, this );
_multi = !sshot;
_type = type;
_active = true;
qDebug( "OFileNotification::watch(): watching '%s' [wd=%d].", (const char*) path, _wd );
return _wd;
}
else
{
qWarning( "OFileNotification::watch(): Can't watch '%s': %s.", (const char*) path, strerror( errno ) );
return -1;
}
}
void OFileNotification::stop()
{
notification_list.remove( _wd );
_path = QString::null;
_wd = 0;
_active = false;
if ( notification_list.isEmpty() )
{
OFileNotification::unregisterEventHandler();
}
}
OFileNotificationType OFileNotification::type() const
{
return _type;
}
QString OFileNotification::path() const
{
return _path;
}
bool OFileNotification::activate()
{
emit triggered();
_signal.activate();
if ( !_multi ) stop();
return true;
}
void OFileNotification::singleShot( const QString& path, QObject* receiver, const char* member, OFileNotificationType type )
{
OFileNotification* ofn = new OFileNotification();
ofn->_signal.connect( receiver, member );
ofn->watch( path, true, type );
}
void OFileNotification::inotifyEventHandler()
{
qWarning( "OFileNotification::__eventHandler(): reached." );
char buffer[16384];
size_t buffer_i;
struct inotify_event *pevent, *event;
ssize_t r;
size_t event_size;
int count = 0;
r = ::read(_fd, buffer, 16384);
if ( r <= 0 )
return;
buffer_i = 0;
while ( buffer_i < r )
{
/* Parse events and queue them ! */
pevent = (struct inotify_event *)&buffer[buffer_i];
event_size = sizeof(struct inotify_event) + pevent->len;
qDebug( "pevent->len = %d\n", pevent->len);
OFileNotification* fn = notification_list[ pevent->wd ];
if ( fn )
fn->activate();
else
assert( false );
//event = malloc(event_size);
//memmove(event, pevent, event_size);
//queue_enqueue(event, q);
buffer_i += event_size;
count++;
}
qDebug( "received %d events...", count );
return;
}
bool OFileNotification::registerEventHandler()
{
OFileNotification::_fd = ::open( INOTIFY_DEVICE, O_RDONLY );
if ( OFileNotification::_fd < 0 )
{
qWarning( "OFileNotification::registerEventHandler(): couldn't register event handler: %s", strerror( errno ) );
return false;
}
OFileNotification::_sn = new QSocketNotifier( _fd, QSocketNotifier::Read, this, "inotify event" );
connect( OFileNotification::_sn, SIGNAL( activated(int) ), this, SLOT( inotifyEventHandler() ) );
qDebug( "OFileNotification::registerEventHandler(): done" );
return true;
}
void OFileNotification::unregisterEventHandler()
{
if ( OFileNotification::_fd )
::close( OFileNotification::_fd );
qDebug( "OFileNotification::unregisterEventHandler(): done" );
}
}
}
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