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| author | Chen Qi <Qi.Chen@windriver.com> | 2013-01-22 10:34:09 +0800 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2013-03-07 11:19:50 +0000 |
| commit | cae51a169e37b54becc08162aaa643acd53ffe2f (patch) | |
| tree | 494f62005ced71625df56f8f91d97fec176647a9 /meta/classes | |
| parent | bb55cc3dc96a391bd9bc561c08c1cca3b11296b6 (diff) | |
| download | openembedded-core-cae51a169e37b54becc08162aaa643acd53ffe2f.tar.gz openembedded-core-cae51a169e37b54becc08162aaa643acd53ffe2f.tar.bz2 openembedded-core-cae51a169e37b54becc08162aaa643acd53ffe2f.zip | |
image.bbclass: add a hook funtion to support readonly rootfs
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.
For now, it has real effect only if the init system is sysvinit.
[YOCTO #3406]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Diffstat (limited to 'meta/classes')
| -rw-r--r-- | meta/classes/image.bbclass | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass index 68bd342d61..2abda81507 100644 --- a/meta/classes/image.bbclass +++ b/meta/classes/image.bbclass @@ -224,6 +224,24 @@ run_intercept_scriptlets () { fi } +# A hook function to support read-only-rootfs IMAGE_FEATURES +# Currently, it only supports sysvinit system. +read_only_rootfs_hook () { + if ${@base_contains("DISTRO_FEATURES", "sysvinit", "true", "false", d)}; then + # Tweak the mount option and fs_passno for rootfs in fstab + sed -i -e '/^[#[:space:]]*rootfs/{s/defaults/ro/;s/\([[:space:]]*[[:digit:]]\)\([[:space:]]*\)[[:digit:]]$/\1\20/}' ${IMAGE_ROOTFS}/etc/fstab + # Change the value of ROOTFS_READ_ONLY in /etc/default/rcS to yes + if [ -e ${IMAGE_ROOTFS}/etc/default/rcS ]; then + sed -i 's/ROOTFS_READ_ONLY=no/ROOTFS_READ_ONLY=yes/' ${IMAGE_ROOTFS}/etc/default/rcS + fi + # Run populate-volatile.sh at rootfs time to set up basic files + # and directories to support read-only rootfs. + if [ -x ${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh ]; then + ${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh + fi + fi +} + fakeroot do_rootfs () { #set -x # When use the rpm incremental image generation, don't remove the rootfs |