fix crash on kernels without swap support. patch courtesy Seneca Cunningham

2 files changed, 9 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index f2c8b4c..d2c386c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,145 +1,146 @@
 2005-??-??	Opie 1.2.1
 	
 	
 	New Features
 	------------
-	* OpieStumbler: New application (skyhusker)
+	* OpieStumbler: Scans WiFi networks using the wireless extension scanning (skyhusker)
 
 	Fixed Bugs
 	----------
 	* #1535	- Missing line break and unnecessary location shown with Today-Calendar plugin (deller)
 	* #1565 - crash-fix in odevice.cpp while scanning the distribution table (deller)
 	* #1614 - Make Opie-console start in $HOME instead of / (skyhusker)
 	* n.a.	- always show volume and wireless applet popups inside visible screen (deller)
 	* n.a.  - scale O-Menu-Applets appropriately (mickeyl)
 	* n.a.	- libopienet: fix bugs in wireless scanning and setting SSID (skyhusker)
 	* n.a.	- Wellenreiter: relax WE version matching test a bit (mickeyl)
 	* n.a.	- scale BluezApplet appropriately (mickeyl)
+	* n.a.	- memoryapplet: fix crash in memoryapplet on kernels without swap support (seneca cunningham)
 
 	Internal
 	--------
 	* make BluezApplet use OTaskbarApplet (mickeyl)
 
 2005-03-25	Opie 1.2.0
 
 	Fixed Bugs
 	----------
 	* #1613 - AdvancedFM - scale toolbar icons appropriately (drw)
 	* #1620 - OFileSelector - show the button on press and not on press on hold (alwin)
 	* #1473 - Opie-Eye - Same as #1620 but we lack a common FileSystem Button class (zecke)
 	* n.a.  - PackageManager - fix bug where messages show up multiple times in install dialog (drw)
 	* n.a.	- make qpeglobal.h include qglobal.h (zecke)
 
 2005-03-20	Opie 1.2.0-rc1
 
 
 	New Features
 	------------
 	* Launcher: Support a static background pixmap (mickeyl)
 	* LauncherSettings: Choose whether to have a static background pixmap (mickeyl)
 	* PackageManager supports the 'lists_dir' ipkg configuration option (drw)
 	* Added hi-res inline images for large resolution devices (drw)
 	* Improved launcher icons for consistency (ar)
 	* Datebook: Added plugin system to datebook so holidays and birthdays from contacts may displayed in datebook (alwin)
 
 	Fixed Bugs
 	----------
 	* #1236 - VCards contained empty home and work address entries causing Palms to crash (eilers)
 	* #1412 - Launcher Settings - fixed default settings for background in Edit tab dialog (drw)
 	* #1472 - Opie textedit now check for unsaved changes on ESC key (ljp)
 	* #1474 - Implement GUI for Scrollbars on the Left in Appearance (zecke)
 	* #1482 - Fix double '/' in paths (zecke)
 	* #1536 - Autosave of custom locations in opie backup (ar)
 	* #1539 - Fixed displaying too long path in the delete dialog in opie-eye (zecke)
 	* #1540 - Implemented deletion of DocLnks in opie-eye (zecke)
 	* #1542 - Fixed Todo crash when priority < 1 or > 5 (drw)
 	* #1550 - Browse for alarm sound start in QPEDIR/sounds/ (zecke)
 	* #1554 - Fixed Opie-Console name in .desktop file (mickeyl)
 	* #1556 - Start to look for sound files in /opt/QtPalmtop/sounds (zecke)
 	* #1558 - Fixed opie-login breaking opie startup (mickeyl)
 	* #1560 - Fixed Opie-Console picking up the wrong shell (bluelightning)
 	* #1570 - Confirmation needed befor Restore a backup and overwrite local data (ar)
 	* #1591 - Addressbook sortorder changed by clicking on column 0 (eilers)
 	* #1599 - Security - change recommendation for opie-multiauth to opie-securityplugin (gints)
 	* #1604 - Checkbook crashed on startup (drw)
 	* #1608 - Addressbook crashed after search, which may caused by not initialzed member variable (eilers)
 	* #1608 - QueryByExampe-Datediff on SQL database did not worked properly (eilers)
 	* n.a.  - Netsystemtime - fixed UI to prevent error dialog from displaying when it shouldn't, get rid of some compiler warnings (drw)
 	* n.a.  - PackageManager - fixed where last package in status file was not shown as installed when it should be (drw)
 	* n.a.  - PackageManager - fixed bug where lists_dir was not being honored at startup (drw)
 	* n.a.  - PackageManager - provided default value for lists_dir when none is entered in configuration dialog (drw)
 	* n.a.  - OTabWidget - fixed scroll buttons, fix display position of tabs (drw)
 	* n.a.  - AddressBook - fixed sorting by 'File As' name (drw)
 	* n.a.  - AddressBook - fixed category handling for 'All' and 'Unfiled' (eilers)
 	* n.a.  - AddressBook - fixed letter picker record selection and sort records afterwards (drw)
 
 	Internal
 	--------
 	* Worked around bug in Qt/Embedded 2.3.10: qt_version() returns 231 (mickeyl)
 	* Killed the need for weak symbols in QtE (zecke)
 	* Added optional building libqpe without inline images (mickeyl)
 	* OColorButton - fixed so does not emit a colorSelected signal inside of resizeEvent (drw)
 
 2005-02-03	Opie 1.1.9
 
 	New Features
 	------------
 	* Number of icon columns in Launcher is customizable through Launcher.conf (hrw,zecke,mickeyl)
 	* Number of icon columns in Launcher is customizable through LauncherSettings (mickeyl)
 	* Usability enhancements in OpieIRC (skyhusker)
 
 	Fixed Bugs
 	----------
 	* #1501 - Fixed bug in todo sql backend (eilers)
 	* #1505 - Added more Swap sizes in memoryapplet (mickeyl)
 	* #1525 - Hopefully fixed double alarms and not removing alarms set with the Clock application (zecke)
 	* #1533 - Security Owner Dialog (shown in case of unsuccessfull authentiacation) wasn't able to display information in non latin1 encoding (zecke)
 	* n.a. - Removed hard coded font sizes in a couple of inputmethods (mickeyl)
 	* n.a. - Removed MediumDlg appearing prior to FirstUsage wizard (i.e. calibration) (mickeyl)
 	* n.a. - Fixed numerous buglets in OpieIRC (skyhusker)
 
 	Internal
 	--------
 	* Added the Qtopia 1.7 SDK macros for quick-apps to easa compilation of 3rd party apps against our headers (mickeyl)
 	* You can now use the Opie build system in combination with a OpenEmbedded staging area which makes a nice cross development environment (mickeyl)
 	* Made Opie compilable with Qt/Embedded 2.3.10 (ar)
 	* Changed Launcher to get default orientation from ODevice w/ QWS_DISPLAY overriding (mickeyl)
 	* Build tree cleanups (mickeyl)
 
 2004-11-26	Opie 1.1.8
 
 	New Features
 	------------
 	* PackageManager supports installation of local ipkg files (drw)
 	* PackageManager supports linking of applications to root (drw)
 	* PackageManager supports src/gz feeds (drw,wimpie)
 	* Added a syslog information tab to sysinfo (mickeyl)
 	* Added new, more consistent, PIM icons + a GIMP teplate (ar)
 
 	Fixed Bugs
 	----------
 	* #1017 - Tetrix doesn't display correctly for high resolution screens (drw)
 	* #1269 - VCards were imported into personal area if it was activated (eilers)
 	* #1464 - Packagemanager dont set active filter after install a package (drw)
 	* #1479 - Improved VCard-Parser to import VCards created by Evolution 2 and Apple Addressbook (eilers)
 	* #1493 - Fixed one column layout bug of the launcher (hrw)
 	* n.a. - PackageManager - (Minor UI tweak) in filter dialog, when option is enabled, set focus to widget that corresponds to that option (drw)
 	* n.a. - PackageManager - (Minor UI tweak) fix double entry in source feed configuration when adding a new feed (drw)
 	* n.a. - Battery Applet - fix sizing of battery info popup (drw,mickeyl)
 
 	Internal
 	--------
 	* Moved libopie1 to unsupported (mickeyl)
 	* Implemented generic queryByExample() with incremental searching. A lot of internal changes of the Pim2-library (eilers)
 	* Added fast and full featured and incremental sorted() for SQL addressbook backend (eilers)
 
 2004-11-14	Opie 1.1.7
 
 	New Features
 	------------
 	* libOpieDB now uses SQLite V3 instead V2. Remember to upgrade your database files! (eilers)
 	* Backup now uses the busy indicator when backing up and restore (ar)
 	* OpiePlayer2 gained adding of Directories to the playlist (zecke)
 	* OpiePlayer2 better error handling (zecke)
 	* OpiePlayer2 progress indication while streaming (zecke)
 	* OpiePlayer2 ported to use libxine 1.0.0-rc6a (brad,zecke)
diff --git a/noncore/applets/memoryapplet/swapfile.cpp b/noncore/applets/memoryapplet/swapfile.cpp
index 4609c13..50c173b 100644
--- a/noncore/applets/memoryapplet/swapfile.cpp
+++ b/noncore/applets/memoryapplet/swapfile.cpp
@@ -1,186 +1,192 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+** Copyright (C) 2002-2005 the Opie Team <opie-devel@handhelds.org>
 **
-** This file is part of Qtopia Environment.
+** This file is part of Opie Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #include "swapfile.h"
 
 /* OPIE */
 #include <opie2/odebug.h>
 #include <qpe/resource.h>
 using namespace Opie::Core;
 
 /* QT */
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qlabel.h>
 #include <qtimer.h>
 #include <qlayout.h>
 #include <qpushbutton.h>
 #include <qhbuttongroup.h>
 #include <qradiobutton.h>
 #include <qlineedit.h>
 #include <qprogressbar.h>
 #include <qcombobox.h>
 #include <qvgroupbox.h>
 #include <qhbox.h>
 #include <qmessagebox.h>
 #include <qcopchannel_qws.h>
 
 /* STD */
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/vfs.h>
 #include <mntent.h>
 #include <unistd.h>
 #include <sys/types.h>
 
 Swapfile::Swapfile( QWidget *parent, const char *name, WFlags f )
     : QWidget( parent, name, f )
 {
+	if ( !QFile::exists( "/proc/swaps" ) )
+	{
+		QLabel *text = new QLabel( tr( "Swap disabled in kernel" ), this );
+		return;
+	}
 	// are we running as root?
 	isRoot = geteuid() == 0;
 
 	QVBoxLayout* vb = new QVBoxLayout(this, 5);
 
 	QHButtonGroup* cfsdRBG = new QHButtonGroup(tr("Swapfile location"), this);
 	cfsdRBG->setRadioButtonExclusive(true);
 	vb->addWidget(cfsdRBG);
 
 	ramRB = new QRadioButton(tr("RAM"), cfsdRBG);
 	cfRB = new QRadioButton(tr("CF Card"), cfsdRBG);
 	sdRB = new QRadioButton(tr("SD Card"), cfsdRBG);
 
 	QHBox *hb1 = new QHBox(this);
 	hb1->setSpacing(5);
 
 	swapPath1 = new QLineEdit(hb1);
 	swapPath1->setEnabled(false);
 
 	QPushButton* swapOn = new QPushButton(tr(" On "), hb1);
 	QPushButton* swapOff = new QPushButton(tr(" Off "), hb1);
 	vb->addWidget(hb1);
 
 	QVGroupBox* box1 = new QVGroupBox(tr("Manage Swapfile"), this);
 	vb->addWidget(box1);
 
 	QHBox *hb2 = new QHBox(box1);
 	hb2->setSpacing(5);
 	QPushButton* mkSwap = new QPushButton(tr("Generate"), hb2);
 	QPushButton* rmSwap = new QPushButton(tr("Remove"), hb2);
 
 	QHBox *hb3 = new QHBox(box1);
 	hb3->setSpacing(5);
 	swapSize = new QComboBox(hb3);
 	swapSize->insertStringList(QStringList::split(",", tr("2 Mb,4 Mb,6 Mb,8 Mb,16 Mb,32 Mb,64 Mb")));
 
 	mkswapProgress = new QProgressBar(3, hb3);
 	mkswapProgress->setCenterIndicator(true);
 
 	QHBox *hb4 = new QHBox(this);
 	hb4->setSpacing(5);
 
 	swapStatusIcon = new QLabel(hb4);
 	swapStatus = new QLabel("", hb4);
 	hb4->setStretchFactor(swapStatus, 99);
     vb->addWidget(hb4);
 
     connect(swapOn, SIGNAL(clicked()), this, SLOT(swapon()));
     connect(swapOff, SIGNAL(clicked()), this, SLOT(swapoff()));
     connect(cfRB, SIGNAL(clicked()), this, SLOT(cfsdchecked()));
     connect(sdRB, SIGNAL(clicked()), this, SLOT(cfsdchecked()));
     connect(ramRB, SIGNAL(clicked()), this, SLOT(cfsdchecked()));
     connect(mkSwap, SIGNAL(clicked()), this, SLOT(makeswapfile()));
     connect(rmSwap, SIGNAL(clicked()), this, SLOT(removeswapfile()));
 
 	cfRB->setEnabled(FALSE);
     sdRB->setEnabled(FALSE);
 
     QCopChannel *pcmciaChannel = new QCopChannel("QPE/Card", this);
     connect(pcmciaChannel, SIGNAL(received(const QCString&,const QByteArray&)), this, SLOT(cardnotify(const QCString&,const QByteArray&)));
     QCopChannel *sdChannel = new QCopChannel("QPE/Card", this);
     connect(sdChannel, SIGNAL(received(const QCString&,const QByteArray&)), this, SLOT(cardnotify(const QCString&,const QByteArray&)));
 
     cardInPcmcia0 = FALSE;
     cardInPcmcia1 = FALSE;
     cardInSd = FALSE;
 
     Swapfile::status();
     Swapfile::getStatusPcmcia();
     Swapfile::getStatusSd();
 }
 
 int Swapfile::exec(const QString& arg)
 {
 	return system((!isRoot ? "sudo " : "") + arg);
 }
 
 
 Swapfile::~Swapfile()
 {
 }
 
 void Swapfile::cardnotify(const QCString & msg, const QByteArray &)
 {
     if (msg == "stabChanged()")
 	{
         getStatusPcmcia();
     }
 	else if (msg == "mtabChanged()")
 	{
         getStatusSd();
 	}
 }
 
 void Swapfile::getStatusPcmcia()
 {
 
     bool cardWas0 = cardInPcmcia0;	// remember last state
     bool cardWas1 = cardInPcmcia1;
 
     QString fileName;
 
     // one of these 3 files should exist
     if (QFile::exists("/var/run/stab")) {
 	fileName = "/var/run/stab";
     } else if (QFile::exists("/var/state/pcmcia/stab")) {
 	fileName = "/var/state/pcmcia/stab";
     } else {
 	fileName = "/var/lib/pcmcia/stab";
     }
 
     QFile f(fileName);
 
     if (f.open(IO_ReadOnly)) {
 	QStringList list;
 	QTextStream stream(&f);
 	QString streamIn;
 	streamIn = stream.read();
 	list = QStringList::split("\n", streamIn);
 	for (QStringList::Iterator line = list.begin(); line != list.end();
 	     line++) {
 	    if ((*line).startsWith("Socket 0:")) {
 		if ((*line).startsWith("Socket 0: empty") && cardInPcmcia0) {
 		    cardInPcmcia0 = FALSE;
 		} else if (!(*line).startsWith("Socket 0: empty")
 			   && !cardInPcmcia0) {
 		    cardInPcmcia0 = TRUE;
 		}