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x86_64: fix invoking sysupgrade on PARTUUID mounted system

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Fix sysupgrade to determine the correct boot block device to use if
/proc/cmdline contains a PARTUUID root.

Change the preinit move_config() hook to use the UUID scanning code
from sysupgrade in order to avoid code duplication.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

SVN-Revision: 42968
This commit is contained in:
Jo-Philipp Wich 2014-10-19 20:28:43 +00:00
parent e2e2e54bfe
commit 05abf01ac0
2 changed files with 49 additions and 57 deletions
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36
target/linux/x86_64/base-files/lib/preinit/79_move_config
View file

@ -2,40 +2,10 @@
# Copyright (C) 2012-2014 OpenWrt.org
move_config() {
local cmdline uuid disk dev
. /lib/upgrade/platform.sh
if read cmdline < /proc/cmdline; then
case "$cmdline" in
*block2mtd=*)
disk="${cmdline##*block2mtd=}"
disk="${disk%%,*}"
;;
*root=*)
disk="${cmdline##*root=}"
disk="${disk%% *}"
;;
esac
case "$disk" in
PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-02)
uuid="${cmdline#PARTUUID=}"
uuid="${uuid%-02}"
for disk in /dev/[hsv]d[a-z]; do
set -- $(dd if=$disk bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
if [ "$4$3$2$1" = "$uuid" ]; then
dev="${disk}1"
break
fi
done
;;
/dev/*)
dev="${disk%[0-9]}1"
;;
esac
fi
if [ -n "$dev" ]; then
mount -t ext4 -o rw,noatime "$dev" /mnt
if platform_export_bootpart; then
mount -t ext4 -o rw,noatime "$BOOTPART" /mnt
mv -f /mnt/sysupgrade.tgz /
umount /mnt
fi

66
target/linux/x86_64/base-files/lib/upgrade/platform.sh
View file

@ -1,16 +1,38 @@
x86_get_rootfs() {
local rootfsdev
local rootfstype
platform_export_bootpart() {
local cmdline uuid disk
rootfstype="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "rootfstype") { print $2 }' < /proc/cmdline)"
case "$rootfstype" in
squashfs|jffs2)
rootfsdev="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "block2mtd.block2mtd") { print substr($2,1,index($2, ",")-1) }' < /proc/cmdline)";;
ext4)
rootfsdev="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "root") { print $2 }' < /proc/cmdline)";;
esac
if read cmdline < /proc/cmdline; then
case "$cmdline" in
*block2mtd=*)
disk="${cmdline##*block2mtd=}"
disk="${disk%%,*}"
;;
*root=*)
disk="${cmdline##*root=}"
disk="${disk%% *}"
;;
esac
echo "$rootfstype:$rootfsdev"
case "$disk" in
PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-02)
uuid="${disk#PARTUUID=}"
uuid="${uuid%-02}"
for disk in /dev/[hsv]d[a-z]; do
set -- $(dd if=$disk bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
if [ "$4$3$2$1" = "$uuid" ]; then
export BOOTPART="${disk}1"
return 0
fi
done
;;
/dev/*)
export BOOTPART="${disk%[0-9]}1"
return 0
;;
esac
fi
return 1
}
platform_check_image() {
@ -26,19 +48,19 @@ platform_check_image() {
}
platform_copy_config() {
local rootfs="$(x86_get_rootfs)"
local rootfsdev="${rootfs##*:}"
mount -t ext4 -o rw,noatime "${rootfsdev%[0-9]}1" /mnt
cp -af "$CONF_TAR" /mnt/
umount /mnt
if [ -b "$BOOTPART" ]; then
mount -t ext4 -o rw,noatime "$BOOTPART" /mnt
cp -af "$CONF_TAR" /mnt/
umount /mnt
fi
}
platform_do_upgrade() {
local rootfs="$(x86_get_rootfs)"
local rootfsdev="${rootfs##*:}"
platform_export_bootpart
sync
[ -b ${rootfsdev%[0-9]} ] && get_image "$@" | dd of=${rootfsdev%[0-9]} bs=4096 conv=fsync
sleep 1
if [ -b "${BOOTPART%[0-9]}" ]; then
sync
get_image "$@" | dd of="${BOOTPART%[0-9]}" bs=4096 conv=fsync
sleep 1
fi
}