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-rw-r--r--package/base-files/files/lib/upgrade/common.sh32
1 files changed, 19 insertions, 13 deletions
diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index b3a29fb32e..bbedeefd26 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -101,35 +101,41 @@ get_magic_long() {
}
export_bootdevice() {
- local cmdline uuid disk uevent line
+ local cmdline bootdisk rootpart uuid blockdev uevent line
local MAJOR MINOR DEVNAME DEVTYPE
if read cmdline < /proc/cmdline; then
case "$cmdline" in
*block2mtd=*)
- disk="${cmdline##*block2mtd=}"
- disk="${disk%%,*}"
+ bootdisk="${cmdline##*block2mtd=}"
+ bootdisk="${bootdisk%%,*}"
;;
*root=*)
- disk="${cmdline##*root=}"
- disk="${disk%% *}"
+ rootpart="${cmdline##*root=}"
+ rootpart="${rootpart%% *}"
;;
esac
- case "$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="${disk#PARTUUID=}"
- uuid="${uuid%-02}"
- for disk in $(find /dev -type b); do
- set -- $(dd if=$disk bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
+ case "$bootdisk" in
+ /dev/*)
+ uevent="/sys/class/block/${bootdisk##*/}/uevent"
+ ;;
+ esac
+
+ case "$rootpart" in
+ PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-[a-f0-9][a-f0-9])
+ uuid="${rootpart#PARTUUID=}"
+ uuid="${uuid%-[a-f0-9][a-f0-9]}"
+ for blockdev in $(find /dev -type b); do
+ set -- $(dd if=$blockdev bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
if [ "$4$3$2$1" = "$uuid" ]; then
- uevent="/sys/class/block/${disk##*/}/uevent"
+ uevent="/sys/class/block/${blockdev##*/}/uevent"
break
fi
done
;;
/dev/*)
- uevent="/sys/class/block/${disk##*/}/uevent"
+ uevent="/sys/class/block/${rootpart##*/}/../uevent"
;;
esac