Hi, The answer to this depends on what form your application & system takes. Does the application require user input/output, does the final system have a console, is there a GUI etc..... The simple method (where you need console I/O and do not need the board to do anything else but run the application) is to bypass the login and automatically start the app. You can do this by changing the getty line parameters to add -n (no user prompt) and -l app_name to run 'app_name' instead of /bin/login. No idea if this will work as I have never tried it but I have used a similar option in 'mingetty' that Fedora uses to auto login to a user & then have a custom .bashrc to start the required app. The second approach (no console on final system) is to run your application as a service (or daemon) program. To do this your application needs to be changed so it can run as a daemon... typically this means adding a command line option and then an extra function within the app to do the required thing. You should be able to find what is needed by searching the list - I have previously posted a suitable function to the list that is working for me. Once the application supports daemonisation, you can then add a start script - use one of the scripts pointed to by links in /etc/rc.d/rc3.d as guidance. Note that the script actually lives in /etc/init.d and needs to be able to take 'start|stop|restart' as a parameter. Regards Phil Q Phil Quiney, Senior Software Engineer Trinity Convergence Cambridge Business Park Cowley Road Cambridge CB4 0WZ, UK T: +44(0)1223-435536 F: +44(0)1223-435560 www.trinityconvergence.com <http://www.trinityconvergence.com/>
________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Deepak Shankar-TLS,Chennai. Sent: 06 October 2008 17:25 To: davinci-linux-open-source@linux.davincidsp.com Subject: RE: Automatic Process spawning before login in dm355 with ramdisk Could someone please suggest me a best way to start a process in Linux instead of landing in the automatic login prompt? ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Deepak Shankar-TLS,Chennai. Sent: Thursday, October 02, 2008 7:57 PM To: davinci-linux-open-source@linux.davincidsp.com Subject: Automatic Process spawning before login in dm355 with ramdisk Hi, I've created a ramdisk for the applications that I created in the NFS mounts. As long as I have a terminal, I can login and execute the program. However, I'm trying to start the processes automatically from something like a startup script. example: running encodedecode demo automatically as the system starts up. The problem is its working well in the NFS mounts. But does not work in the ramdisk. the cnmemory pools are not loadable at this stage. Could someone please tell me what am I missing. Please suggest on any other alternative methods to invoke scripts automatically before logging in. This is how the /etc/init.d/rcS appears in my rootfs - (Last 2 lines added by me) #############################################################################################3 #! /bin/sh # # rcS Call all S??* scripts in /etc/rcS.d in # numerical/alphabetical order. # # Version: @(#)/etc/init.d/rcS 2.76 19-Apr-1999 miquels_at_cistron_dot_nl <mailto:[EMAIL PROTECTED]> # PATH=/sbin:/bin:/usr/sbin:/usr/bin runlevel=S prevlevel=N umask 022 export PATH runlevel prevlevel # # See if system needs to be setup. This is ONLY meant to # be used for the initial setup after a fresh installation! # if [ -x /sbin/unconfigured.sh ] then /sbin/unconfigured.sh fi # # Source defaults. # . /etc/default/rcS export VERBOSE # # Trap CTRL-C &c only in this shell so we can interrupt subprocesses. # trap ":" INT QUIT TSTP # # Call all parts in order. # for i in /etc/rc.d/rcS.d/S??* do # Ignore dangling symlinks for now. [ ! -f "$i" ] && continue case "$i" in *.sh) # Source shell script for speed. ( trap - INT QUIT TSTP set start . $i ) ;; *) # No sh extension, so fork subprocess. $i start ;; esac done # Run /etc/rc.d/rc.local if it exists [ -x /etc/rc.d/rc.local ] && /etc/rc.d/rc.local # # Finish setup if needed. The comment above about # /sbin/unconfigured.sh applies here as well! # if [ -x /sbin/setup.sh ] then /sbin/setup.sh fi /opt/dvsdk/dm355/loadmodules.sh /opt/dvsdk/dm355/encodedecode -p& #############################################################################################3 Cheers, Deepak DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. -----------------------------------------------------------------------------------------------------------------------
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