initscripts: add read-only-rootfs-hook.sh script
A message that is not in the archive (sent off-list or not yet received): [email protected]
PATCH v2 6/6 initscripts: add read-only-rootfs-hook.sh script
From: Chen Qi <[email protected]>
Add read-only-rootfs-hook.sh script to support a read-only rootfs. This script makes a union mount of /var/lib and /var/volatile/lib, making /var/lib directory writable.
[YOCTO #3406]
Signed-off-by Chen Qi <[email protected]>
--- .../initscripts-1.0/read-only-rootfs-hook.sh | 19 +++++++++++++++++++ meta/recipes-core/initscripts/initscripts_1.0.bb | 3 +++ 2 files changed, 22 insertions(+) create mode 100644 meta/recipes-core/initscripts/initscripts-1.0/read-only-rootfs-hook.sh
meta/recipes-core/initscripts/initscripts-1.0/read-only-rootfs-hook.sh new file +19 -0
@@ -0,0 +1,19 @@ +#!/bin/sh + +. /etc/default/rcS + +[ "$ROOTFS_READ_ONLY" = "no" ] && exit 0 + +# Make sure unionfs is in /proc/filesystems +if ! grep -q unionfs /proc/filesystems; then + echo "ERROR: unionfs not supported by kernel!" + exit 1 +fi + +mkdir -p /var/volatile/lib +mount -t unionfs -o dirs=/var/volatile/lib:/var/lib=ro none /var/lib + +if [ $? != 0 ]; then + echo "ERROR: Union mount failed!" + exit 1 +fi
meta/recipes-core/initscripts/initscripts_1.0.bb +3 -0
@@ -28,6 +28,7 @@ SRC_URI = "file://functions \ file://sysfs.sh \ file://device_table.txt \ file://populate-volatile.sh \ + file://read-only-rootfs-hook.sh \ file://volatiles \ file://save-rtc.sh \ file://GPLv2.patch"
@@ -85,6 +86,7 @@ do_install () { install -m 0755 ${WORKDIR}/devpts ${D}${sysconfdir}/default install -m 0755 ${WORKDIR}/sysfs.sh ${D}${sysconfdir}/init.d install -m 0755 ${WORKDIR}/populate-volatile.sh ${D}${sysconfdir}/init.d + install -m 0755 ${WORKDIR}/read-only-rootfs-hook.sh ${D}${sysconfdir}/init.d install -m 0755 ${WORKDIR}/save-rtc.sh ${D}${sysconfdir}/init.d install -m 0644 ${WORKDIR}/volatiles ${D}${sysconfdir}/default/volatiles/00_core
@@ -116,6 +118,7 @@ do_install () { update-rc.d -r ${D} bootmisc.sh start 55 S . update-rc.d -r ${D} sysfs.sh start 02 S . update-rc.d -r ${D} populate-volatile.sh start 37 S . + update-rc.d -r ${D} read-only-rootfs-hook.sh start 41 S . update-rc.d -r ${D} devpts.sh start 38 S . if [ "${TARGET_ARCH}" = "arm" ]; then update-rc.d -r ${D} alignment.sh start 06 S .
Signature · 1 line
1.7.9.5
V2 is a rebase against the latest master branch, which solves some conflicts in initscripts_1.0.bb file.
Because only this patch [6/6] had conflicts, I only sent out version 2 of this patch.
Cheers,
Chen Qi
Quoted 68 lines · On 01/29/2013 02:17 PM, [email protected] wrote:
From: Chen Qi <[email protected]>
Add
read-only-rootfs-hook.shscript to support a read-only rootfs. This script makes a union mount of/var/liband/var/volatile/lib, making/var/libdirectory writable.[YOCTO #3406]
Signed-off-by Chen Qi <[email protected]>--- .../initscripts-1.0/read-only-rootfs-hook.sh | 19 +++++++++++++++++++ meta/recipes-core/initscripts/initscripts_1.0.bb | 3 +++ 2 files changed, 22 insertions(+)create mode 100644
meta/recipes-core/initscripts/initscripts-1.0/read-only-rootfs-hook.shmeta/recipes-core/initscripts/initscripts-1.0/read-only-rootfs-hook.sh new file +19
-0@@ -0,0 +1,19 @@ +#!/bin/sh + +. /etc/default/rcS + +[ "$ROOTFS_READ_ONLY" = "no" ] && exit 0 + +# Make sure unionfs is in /proc/filesystems +if ! grep -q unionfs /proc/filesystems; then + echo "ERROR: unionfs not supported by kernel!" + exit 1 +fi + +mkdir -p /var/volatile/lib +mount -t unionfs -o dirs=/var/volatile/lib:/var/lib=ro none /var/lib + +if [ $? != 0 ]; then + echo "ERROR: Union mount failed!" + exit 1 +fimeta/recipes-core/initscripts/initscripts_1.0.bb +3
-0@@ -28,6 +28,7 @@ SRC_URI = "file://functions \ file://sysfs.sh \ file://device_table.txt \ file://populate-volatile.sh \ + file://read-only-rootfs-hook.sh \ file://volatiles \ file://save-rtc.sh \ file://GPLv2.patch"@@ -85,6 +86,7 @@ do_install () { install -m 0755 ${WORKDIR}/devpts ${D}${sysconfdir}/default install -m 0755 ${WORKDIR}/sysfs.sh ${D}${sysconfdir}/init.d install -m 0755 ${WORKDIR}/populate-volatile.sh ${D}${sysconfdir}/init.d + install -m 0755 ${WORKDIR}/read-only-rootfs-hook.sh ${D}${sysconfdir}/init.d install -m 0755 ${WORKDIR}/save-rtc.sh ${D}${sysconfdir}/init.d install -m 0644 ${WORKDIR}/volatiles ${D}${sysconfdir}/default/volatiles/00_core@@ -116,6 +118,7 @@ do_install () { update-rc.d -r ${D} bootmisc.sh start 55 S . update-rc.d -r ${D} sysfs.sh start 02 S . update-rc.d -r ${D} populate-volatile.sh start 37 S . + update-rc.d -r ${D} read-only-rootfs-hook.sh start 41 S . update-rc.d -r ${D} devpts.sh start 38 S . if [ "${TARGET_ARCH}" = "arm" ]; then update-rc.d -r ${D} alignment.sh start 06 S .