From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ee0-f41.google.com ([74.125.83.41]) by linuxtogo.org with esmtp (Exim 4.72) (envelope-from ) id 1To9HW-0005Qu-W4 for openembedded-core@lists.openembedded.org; Thu, 27 Dec 2012 09:57:39 +0100 Received: by mail-ee0-f41.google.com with SMTP id d41so4485226eek.14 for ; Thu, 27 Dec 2012 00:42:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:date:from:to:cc:subject:message-id:references :mime-version:content-type:content-disposition:in-reply-to :user-agent; bh=Vpo+vsUe41ZuDLUPK0KT08Chp70sp3x87nJReMJvpRk=; b=UnELVfl2rpbgoY68SF2lFh9NOQsjJNjfg4pZdhVOkE6JdqkmSdwrWQ7uSDkvUNS8Q5 qYms7YPOQaxZPEWH19NMvypO6skFxKvRFsE4JNdi0jkwXNPNhiPtRLWCgvKPa8K7Z8fd zDRben5HazcbNol8mmcz4ggnBsT3hht8l7n9TkHK1rZ/exigan+ctt9I/aK/JbSvFOiO 92vrGV7iaAnPrUHmasOn5C0X3D4XjJK86k4e6a4vncXhVVFNRMT5t9YzefNYYh0y1CBp u1KNZwzvHvAY8YR/a8YXhUa0nrgi2JI32Fxoqpufut3IFp4G8r6XDsbHOxqQcPbIp5/y DzmQ== X-Received: by 10.14.174.198 with SMTP id x46mr76314482eel.23.1356597765236; Thu, 27 Dec 2012 00:42:45 -0800 (PST) Received: from localhost (ip-62-24-80-7.net.upcbroadband.cz. [62.24.80.7]) by mx.google.com with ESMTPS id k4sm58233135eep.15.2012.12.27.00.42.43 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 27 Dec 2012 00:42:44 -0800 (PST) Date: Thu, 27 Dec 2012 09:42:44 +0100 From: Martin Jansa To: Qi.Chen@windriver.com Message-ID: <20121227084244.GB3777@jama> References: <819997e2cad5d6a4bf2621fb7cc443105ca0fc87.1356576405.git.Qi.Chen@windriver.com> MIME-Version: 1.0 In-Reply-To: <819997e2cad5d6a4bf2621fb7cc443105ca0fc87.1356576405.git.Qi.Chen@windriver.com> User-Agent: Mutt/1.5.21 (2010-09-15) Cc: Zhenfeng.Zhao@windriver.com, openembedded-core@lists.openembedded.org Subject: Re: [PATCH 2/4] image.bbclass: add two hook funtions to support read-only rootfs X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 Dec 2012 08:57:39 -0000 X-Groupsio-MsgNum: 33113 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Pd0ReVV5GZGQvF3a" Content-Disposition: inline --Pd0ReVV5GZGQvF3a Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Dec 27, 2012 at 10:57:39AM +0800, Qi.Chen@windriver.com wrote: > From: Chen Qi >=20 > read_only_rootfs_hook: this funtion is invoked only if 'read-only-rootfs' > is in IMAGE_FEATURES. It tweaks some basic files and makes populate- > volatile.sh script run at rootfs time. >=20 > choose_volatile_conf_file: this function properly chooses the right > conf file for volatile storage handling according to the IMAGE_FEATURES. choose_volatile_conf_file is always called from core-image with or without read-only-rootfs in IMAGE_FEATURES. So it will use /etc/default/volatiles_stage/volatiles-readonly-minimal without read-only-rootfs. Cheers, >=20 > [YOCTO #3406] >=20 > Signed-off-by: Chen Qi > --- > meta/classes/image.bbclass | 29 +++++++++++++++++++++++++++++ > 1 file changed, 29 insertions(+) >=20 > diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass > index 8bf718a..15d42d0 100644 > --- a/meta/classes/image.bbclass > +++ b/meta/classes/image.bbclass > @@ -394,6 +394,35 @@ zap_root_password () { > mv ${IMAGE_ROOTFS}/etc/passwd.new ${IMAGE_ROOTFS}/etc/passwd > }=20 > =20 > +# A hook function to support read-only-rootfs IMAGE_FEATURES > +read_only_rootfs_hook () { > + # Tweak the mount option in fstab > + sed '/rootfs/ s/defaults/ro/' < ${IMAGE_ROOTFS}/etc/fstab > ${IMAGE_ROO= TFS}/etc/fstab.new > + mv ${IMAGE_ROOTFS}/etc/fstab.new ${IMAGE_ROOTFS}/etc/fstab > + # Change the value of ROOTFS_READ_ONLY in /etc/default/rcS to yes > + sed 's/ROOTFS_READ_ONLY=3Dno/ROOTFS_READ_ONLY=3Dyes/' < ${IMAGE_ROOTFS}= /etc/default/rcS > ${IMAGE_ROOTFS}/etc/default/rcS.new > + mv ${IMAGE_ROOTFS}/etc/default/rcS.new ${IMAGE_ROOTFS}/etc/default/rcS > + # Run populate-volatile.sh at rootfs time to set up basic files > + # and directories to support read-only rootfs. > + if [ ! -e ${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh ]; then > + echo "${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh doesn't exist." > + exit 1 > + else > + ${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh > + fi > +} > + > +# Choose the correct config file for volatile storage handling according= to the image type > +choose_volatile_conf_file () { > + if ${@base_contains("IMAGE_FEATURES", "x11-sato", "true", "false" ,d)};= then > + cp ${IMAGE_ROOTFS}/etc/default/volatiles_stage/volatiles-readonly-sato= \ > + ${IMAGE_ROOTFS}/etc/default/volatiles/00_core_readonly > + else > + cp ${IMAGE_ROOTFS}/etc/default/volatiles_stage/volatiles-readonly-mini= mal \ > + ${IMAGE_ROOTFS}/etc/default/volatiles/00_core_readonly > + fi > +} > + > # allow openssh accept login with empty password string > openssh_allow_empty_password () { > if [ -e ${IMAGE_ROOTFS}${sysconfdir}/ssh/sshd_config ]; then > --=20 > 1.7.9.5 >=20 >=20 > _______________________________________________ > Openembedded-core mailing list > Openembedded-core@lists.openembedded.org > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core --=20 Martin 'JaMa' Jansa jabber: Martin.Jansa@gmail.com --Pd0ReVV5GZGQvF3a Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAlDcCgQACgkQN1Ujt2V2gBxU4ACfbM392Gx1/bl1atQ5Uh3c4tQS Sp0AmwTPAqSYo6HWd8tKJgJN5Rc2YBCH =aSZP -----END PGP SIGNATURE----- --Pd0ReVV5GZGQvF3a--