1 files changed, 45 insertions, 8 deletions

diff --git a/libopie2/opiecore/device/odevice_ipaq.cpp b/libopie2/opiecore/device/odevice_ipaq.cpp
index e6e3145..63b60a7 100644
--- a/libopie2/opiecore/device/odevice_ipaq.cpp
+++ b/libopie2/opiecore/device/odevice_ipaq.cpp
@@ -33,2 +33,3 @@
 #include <qapplication.h>
+#include <qdir.h>
 #include <qfile.h>
@@ -381,8 +382,26 @@ bool iPAQ::setDisplayBrightness ( int bright )
     case Model_iPAQ_H191x:
-        if ( !bright )
-            cmdline = QString::fromLatin1( "echo 4 > /sys/class/backlight/pxafb/power");
-        else
-            cmdline = QString::fromLatin1( "echo 0 > /sys/class/backlight/pxafb/power; echo %1 > /sys/class/backlight/pxafb/brightness" ).arg( bright );
-        // No Global::shellQuote as we gurantee it to be sane
-        res = ( ::system( QFile::encodeName(cmdline) ) == 0 );
+        {
+            QDir sysClass( "/sys/class/backlight/pxafb/" );
+            sysClass.setFilter(QDir::Dirs);
+            int fd;
+            if ( sysClass.exists() ) {
+                QString sysClassPath = sysClass.absFilePath( "/sys/class/backlight/pxafb/power" );
+                fd = ::open( sysClassPath, O_WRONLY | O_NONBLOCK );
+                if ( fd ) {
+                    char buf[10];
+                    buf[0] = bright ? 0 : 4;
+                    buf[1] = '\0';
+                    res = ( ::write( fd, &buf[0], 2 ) == 0 );
+                    ::close( fd );
+                }
+                sysClassPath = sysClass.absFilePath( "/sys/class/backlight/pxafb/brightness" );
+                fd = ::open( sysClassPath, O_WRONLY | O_NONBLOCK );
+                if ( fd ) {
+                    char buf[100];
+                    int len = ::snprintf( &buf[0], sizeof buf, "%d", bright );
+                    res = ( ::write( fd, &buf[0], len ) == 0 );
+                    ::close( fd );
+                }
+            }
+        }
         break; 
@@ -439,3 +458,16 @@ bool iPAQ::setDisplayStatus ( bool on )
     if ( model() == Model_iPAQ_H191x ) {
-        cmdline = QString::fromLatin1( "echo %1 > /sys/class/lcd/pxafb/power; echo %2 > /sys/class/backlight/pxafb/power").arg( on ? "0" : "4" ).arg( on ? "0" : "4" );
+        QDir sysClass( "/sys/class/lcd/pxafb/" );
+        sysClass.setFilter(QDir::Dirs);
+        if ( sysClass.exists() ) {
+            QString sysClassPath = sysClass.absFilePath( "/sys/class/lcd/pxafb/power" );
+            int fd = ::open( sysClassPath, O_WRONLY | O_NONBLOCK );
+            if ( fd ) {
+                char buf[10];
+                buf[0] = on ? 0 : 4;
+                buf[1] = '\0';
+                res = ( ::write( fd, &buf[0], 2 ) == 0 );
+                ::close( fd );
+            }
+        }
+        return res;
     } else {
@@ -451,3 +483,8 @@ bool iPAQ::hasLightSensor() const
 {
-    return true;
+    switch (model()) {
+        case Model_iPAQ_H191x:
+            return false;
+        default:
+            return true;
+    }
 }