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path: root/recipes-qt/qte/qte-2.3.10/daemonize.patch
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#
# Patch managed by http://www.holgerschurig.de/patcher.html
#

--- qt-2.3.9-snapshot-20041211/src/kernel/qapplication_qws.cpp~daemonize
+++ qt-2.3.9-snapshot-20041211/src/kernel/qapplication_qws.cpp
@@ -104,6 +104,7 @@
 #endif
 
 #include <sys/time.h>
+#include <syslog.h>
 
 #if defined(_OS_AIX_) && defined(_CC_GNU_)
 #include <sys/select.h>
@@ -163,6 +164,7 @@
 //these used to be environment variables, they are initialized from
 //environment variables in
 
+bool qws_daemon = TRUE;
 bool qws_savefonts = FALSE;
 bool qws_screen_is_interlaced=FALSE; //### should be detected
 bool qws_shared_memory = FALSE;
@@ -1686,6 +1688,10 @@
 		mwGeometry = argv[i];
 	} else if ( arg == "-shared" ) {
 	    qws_shared_memory = TRUE;
+	} else if ( arg == "-daemon" ) {
+	    qws_daemon = TRUE;
+	} else if ( arg == "-nodaemon" ) {
+	    qws_daemon = FALSE;	
 	} else if ( arg == "-noshared" ) {
 	    qws_shared_memory = FALSE;
 	} else if ( arg == "-savefonts" ) {
@@ -1742,6 +1748,78 @@
 	qt_appType = type;
 	qws_single_process = TRUE;
 
+    /* Daemonize the server process -- (C) Michael 'Mickey' Lauer <mickey@tm.informatik.uni-frankfurt.de>
+     * Added a new command line option which only is relevant if the application is created as a GuiServer.
+     * The option is -daemon respectively -nodaemon. If in daemon mode (which is the default now), the
+     * server will detach from the controlling terminal and continue as a daemon. This is done via the standard
+     * UNIX double fork magic.
+     */
+    if ( qws_daemon )
+    {
+        qWarning( "qt_init() - starting in daemon mode..." );
+
+        int pid1 = fork();
+        if ( pid1 == -1 )
+        {
+            qWarning( "qt_init() - can't perform initial fork: %s", strerror( errno ) );
+            exit( -1 );
+        }
+        if ( pid1 ) _exit( 0 ); // ok, first fork performed
+
+        chdir( "/" );
+        setsid();
+        umask(0);
+        close(0);
+        close(1);
+        close(2);
+
+        int fdnull = ::open( "/dev/null", O_RDWR );
+        if ( fdnull == -1 )
+        {
+            syslog( 3, "qt_init() - can't open /dev/null to redirect std{in|out|err}: %s", strerror( errno ) );
+            exit( -1 );
+        }
+        dup2( fdnull, 0 ); // stdin
+        dup2( fdnull, 1 ); // stdout
+        dup2( fdnull, 2 ); // stderr
+
+        int pid2 = fork();
+        if ( pid2 == -1 )
+        {
+            syslog( 3, "qt_init() - can't perform initial fork: %s", strerror( errno ) );
+            exit( -1 );
+        }
+        if ( pid2 )
+        {
+             syslog( 4, "qt_init() [%d] - successfully entered daemon mode", pid2 );
+            _exit( 0 ); // ok, second fork performed
+        }
+    }
+
+  /*
+   *               ,        ,
+   *              /(        )`
+   *              \ \___   / |              B E W A R E !
+   *              /- _  `-/  '           We are a DAEMON now!
+   *             (/\/ \ \   /\
+   *             / /   | `    \
+   *             O O   ) /    |
+   *             `-^--'`<     '
+   *            (_.)  _  )   /
+   *             `.___/`    /
+   *               `-----' /
+   *  <----.     __ / __   \
+   *  <----|====O)))==) \) /====
+   *  <----'    `--' `.__,' \
+   *               |        |
+   *                \       /
+   *           ______( (_  / \______
+   *  (FL)   ,'  ,-----'   |        \
+   *         `--{__________)        \/
+   *
+   */
+
+
     /* Allocate a dedicated virtual terminal -- (C) Michael 'Mickey' Lauer <mickey@tm.informatik.uni-frankfurt.de>
      * Added a new command line option which only is relevant if the application is created as a GuiServer.
      * The option is -terminal <num>, where <num> specifies the virtual terminal to be occupied by the server.