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| author |   Patrick Ohly <patrick.ohly@intel.com> | 2017-11-27 16:56:42 +0100 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-12-09 14:36:57 +0000 |
| commit | cfc09de06ecc12bb42181004689e881c75072665 (patch) | |
| tree | 29510ecee6ff60f8fa3008e75923e2701ddf8141 /meta | |
| parent | 577585375efac8f86223d7549ce39cd70877cbd9 (diff) | |
| download | openembedded-core-contrib-cfc09de06ecc12bb42181004689e881c75072665.tar.gz | |
rootfs-postcommands.bbclass: ensure that rootfs gets mounted ro
When read-only-rootfs is active, we need to ensure that the rootfs
does not get mounted read/write by the kernel or initramfs. Adding
"ro" to the boot parameters achieves that.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Diffstat (limited to 'meta')
| -rw-r--r-- | meta/classes/rootfs-postcommands.bbclass | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/meta/classes/rootfs-postcommands.bbclass b/meta/classes/rootfs-postcommands.bbclass index 5391e7a8e3b..a4e627fef84 100644 --- a/meta/classes/rootfs-postcommands.bbclass +++ b/meta/classes/rootfs-postcommands.bbclass @@ -14,6 +14,14 @@ ROOTFS_POSTPROCESS_COMMAND += "rootfs_update_timestamp ; " # Tweak the mount options for rootfs in /etc/fstab if read-only-rootfs is enabled ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", "read_only_rootfs_hook; ", "",d)}' +# We also need to do the same for the kernel boot parameters, +# otherwise kernel or initramfs end up mounting the rootfs read/write +# (the default) if supported by the underlying storage. +# +# We do this with _append because the default value might get set later with ?= +# and we don't want to disable such a default that by setting a value here. +APPEND_append = '${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", " ro", "", d)}' + # Generates test data file with data store variables expanded in json format ROOTFS_POSTPROCESS_COMMAND += "write_image_test_data ; " |