From: Chen Qi <[email protected]> The series of patches add support to read-only rootfs.
The main idea is to use symbolic links to create the illuion that some directories are writable in case of a read-only rootfs. This set of patches have been tested on minimal images with and without 'read-only-rootfs' image feature enabled. Everything is OK. For sato images, everything is the same as before if 'read-only-rootfs' is not enabled. With 'read-only-rootfs' enabled, sato image could work if graphic interface is diabled. When all postinstall problems are resolved, sato image should work well (maybe with some small changes in volatiles-readonly-sato conf file). Changes for Version 4: 1) Improve the commit messages to be clearer. 2) Use 'sed -i' to replace 'sed' and 'mv' operations to cut down the exec overhead. Changes for Version 5: Fix the problem of failing to build the live images Changes for Version 6: 1) Let the image recipes provide the corresponding conf files for read-only rootfs. The config files are closely related to the image types, so it's more reasonable to let these image recipes provide the config files. 2) Support customized conf files for customized images. The following changes since commit 4a36a32567ecfbc7ce7b967803e6e23314953ef5: libpng: fix packaging (2012-12-26 11:34:09 +0000) are available in the git repository at: git://git.pokylinux.org/poky-contrib ChenQi/readonly-rootfs http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=ChenQi/readonly-rootfs Chen Qi (6): sysvinit: add ROOTFS_READ_ONLY variable to rcS-default image.bbclass: add two funtions to support readonly rootfs core-image.bbclass: support read-only rootfs initscripts: support read-only rootfs core-image-minimal: support read-only rootfs core-image-sato: support read-only rootfs meta/classes/core-image.bbclass | 5 +- meta/classes/image.bbclass | 29 +- meta/recipes-core/images/core-image-minimal.bb | 10 + .../images/files/volatiles-readonly-minimal | 8 + .../initscripts/initscripts-1.0/bootmisc.sh | 9 +- .../initscripts-1.0/populate-volatile.sh | 281 ++++++++++---------- .../initscripts/initscripts-1.0/volatiles | 1 + meta/recipes-core/initscripts/initscripts_1.0.bb | 5 +- meta/recipes-core/sysvinit/sysvinit/rcS-default | 4 + meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb | 2 +- meta/recipes-sato/images/core-image-sato.bb | 8 + .../images/files/volatiles-readonly-sato | 14 + 12 files changed, 215 insertions(+), 161 deletions(-) create mode 100644 meta/recipes-core/images/files/volatiles-readonly-minimal create mode 100644 meta/recipes-sato/images/files/volatiles-readonly-sato -- 1.7.9.5 _______________________________________________ Openembedded-core mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core
