For example I want to put the resolv.conf file into the tmpfs which= is mounted at /tmp that the DHCP client can modify that file at runtime.

I tried to create a link in the projectroot:

cd projectroot/etc

ln -s ../tmp/resolv.conf resolv.conf

But then I get the following error with a "ptx go":

-------------------------------------
target: os-release.targetinst= all.post
-------------------------------------

finished target os-release.targetinstall.post
make: *** No rule = to make target `/home/user/development/bsp/branch2_tx53/projectroot/etc/res= olv.conf', needed by `/home/user/development/bsp/branch2_tx53/platform-opti= meas-tx53/state/rootfs.targetinstall'. Stop.

If I create an empty file at projectroot/tmp/resolv.conf the file will= be copied in the rootfs instead if the link...

What is the right way to create such links?

If I create an own package (in + rule) which creates these links, how= can I ensure that my package is called as the last package to overwrite= files from other packages ?

Best regards,

Matthias

--------=_MB94628BBE-A2A6-4F62-9E7B-8FE08031FF90-- --===============0464317655== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline -- ptxdist mailing list ptxdist@pengutronix.de --===============0464317655==-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from ptx.hi.pengutronix.de ([2001:6f8:1178:2:5054:ff:fec0:8e10] ident=Debian-exim) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1TxFV0-0008Re-2r for ptxdist@pengutronix.de; Mon, 21 Jan 2013 12:25:10 +0100 Received: from mol by ptx.hi.pengutronix.de with local (Exim 4.72) (envelope-from ) id 1TxFV0-0003tp-1B for ptxdist@pengutronix.de; Mon, 21 Jan 2013 12:25:10 +0100 Date: Mon, 21 Jan 2013 12:25:10 +0100 From: Michael Olbrich Message-ID: <20130121112510.GC4597@pengutronix.de> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Subject: Re: [ptxdist] Creating links in the root filesystem Reply-To: ptxdist@pengutronix.de List-Id: PTXdist Development Mailing List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: ptxdist-bounces@pengutronix.de Errors-To: ptxdist-bounces@pengutronix.de To: ptxdist@pengutronix.de Hi, On Mon, Jan 21, 2013 at 10:07:09AM +0000, Matthias Klein wrote: > I try to put links into the read-only rootfs which should point into > a RAM filesystem. > For example I want to put the resolv.conf file into the tmpfs which > is mounted at /tmp that the DHCP client can modify that file at > runtime. > > I tried to create a link in the projectroot: > > cd projectroot/etc > ln -s ../tmp/resolv.conf resolv.conf > > > But then I get the following error with a "ptx go": > > ------------------------------------- > target: os-release.targetinstall.post > ------------------------------------- > > finished target os-release.targetinstall.post > make: *** No rule to make target `/home/user/development/bsp/branch2_tx53/projectroot/etc/resolv.conf', > needed by `/home/user/development/bsp/branch2_tx53/platform-optimeas-tx53/state/rootfs.targetinstall'. > Stop. With 'install_alternative' ptxdist follows links and tries to install the contents, so this cannot work. > If I create an empty file at projectroot/tmp/resolv.conf the file > will be copied in the rootfs instead if the link... For /etc/resolv.conf newer versions of ptxdist have an option to make it a link to /run/resolv.conf, which is a better location as /tmp/. > What is the right way to create such links? @$(call install_link, rootfs, /run/resolv.conf, /etc/resolv.conf) > If I create an own package (in + rule) which creates these links, > how can I ensure that my package is called as the last package to > overwrite files from other packages ? That's not possible. But you can disable all files in rootfs and install you're one versions with install_link. For everything else you need to copy the rules into your BSP and modify them. Michael -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- ptxdist mailing list ptxdist@pengutronix.de