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| author | Yang Shi <yang.shi@windriver.com> | 2012-04-10 18:33:43 -0700 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2012-04-11 12:15:16 +0100 |
| commit | b7f4e8d153c2aebbcf6556e7e926f6b94801d6aa (patch) | |
| tree | 4801fa9d3224c59b555d2a0dd31d68ad4afc89ee /meta | |
| parent | bcaea8ec9c9c333f76b368225f60d4fb54c1c7b2 (diff) | |
| download | openembedded-core-b7f4e8d153c2aebbcf6556e7e926f6b94801d6aa.tar.gz openembedded-core-b7f4e8d153c2aebbcf6556e7e926f6b94801d6aa.tar.bz2 openembedded-core-b7f4e8d153c2aebbcf6556e7e926f6b94801d6aa.tar.xz openembedded-core-b7f4e8d153c2aebbcf6556e7e926f6b94801d6aa.zip | |
initrdscripts: fix init-live.sh and use unionfs
[YOCTO #1487]
When booting up with liveCD image, init scripts can't work well on read-only filesystem. Unionfs,
which is supported in Yocto kernel, allows a filesystem to appear as writeable, but without
actually allowing writes to change the filesystem.
Use unionfs to mount rootfs and make root file system can be writen when using liveCD to boot up.
Set UNION_FS variable depending on kernel config, so that it can work with kernel which doesn't
have unionfs feature.
[RP: Mark recipe as machine specific due to kernel dependency]
Signed-off-by: Yang Shi <yang.shi@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta')
| -rw-r--r-- | meta/recipes-core/initrdscripts/files/init-live.sh | 23 | ||||
| -rw-r--r-- | meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb | 14 |
2 files changed, 30 insertions, 7 deletions
diff --git a/meta/recipes-core/initrdscripts/files/init-live.sh b/meta/recipes-core/initrdscripts/files/init-live.sh index eb5ab5b7a..737dae4cb 100644 --- a/meta/recipes-core/initrdscripts/files/init-live.sh +++ b/meta/recipes-core/initrdscripts/files/init-live.sh @@ -7,6 +7,7 @@ ROOT_IMAGE="rootfs.img" MOUNT="/bin/mount" UMOUNT="/bin/umount" ISOLINUX="" +UNIONFS="no" early_setup() { mkdir /proc @@ -89,17 +90,31 @@ case $label in mkdir $ROOT_MOUNT mknod /dev/loop0 b 7 0 2>/dev/null - if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ISOLINUX/$ROOT_IMAGE $ROOT_MOUNT ; then - fatal "Couldnt mount rootfs image" + + if [ "$UNIONFS" = "yes" ]; then + mkdir /rootfs-tmp + + if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ISOLINUX/$ROOT_IMAGE /rootfs-tmp ; then + fatal "Could not mount rootfs image" + else + mkdir /cow + mount -t tmpfs -o rw,noatime,mode=755 tmpfs /cow + mount -t unionfs -o dirs=/cow:/rootfs-tmp=ro unionfs $ROOT_MOUNT + boot_live_root + fi else - boot_live_root + if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ISOLINUX/$ROOT_IMAGE $ROOT_MOUNT ; then + fatal "Could not mount rootfs image" + else + boot_live_root + fi fi ;; install) if [ -f /media/$i/$ISOLINUX/$ROOT_IMAGE ] ; then ./install.sh $i/$ISOLINUX $ROOT_IMAGE $video_mode $vga_mode else - fatal "Couldnt find install script" + fatal "Could not find install script" fi # If we're getting here, we failed... diff --git a/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb b/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb index e85a0e118..8f7511ead 100644 --- a/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb +++ b/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb @@ -2,14 +2,22 @@ DESCRIPTION = "A live image init script" LICENSE = "MIT" LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420" RDEPENDS = "udev" +DEPENDS = "virtual/kernel" SRC_URI = "file://init-live.sh" -PR = "r7" +PR = "r9" +do_compile() { + if grep -q "CONFIG_UNION_FS=y" ${STAGING_KERNEL_DIR}/.config; then + sed -i 's/UNIONFS="no"/UNIONFS="yes"/g' ${WORKDIR}/init-live.sh + fi +} + do_install() { install -m 0755 ${WORKDIR}/init-live.sh ${D}/init } -inherit allarch - FILES_${PN} += " /init " + +# Due to kernel depdendency +PACKAGE_ARCH = "${MACHINE_ARCH}" |