diff options
Diffstat (limited to 'package/base-files/files/lib')
| -rw-r--r-- | package/base-files/files/lib/upgrade/common.sh | 32 |
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 |