75 lines
2.5 KiB
Diff
75 lines
2.5 KiB
Diff
From: Jo-Philipp Wich <jo@mein.io>
|
|
Date: Wed, 30 Mar 2016 03:10:51 +0200
|
|
Subject: x86: make sysupgrade work without partx
|
|
|
|
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
|
|
|
|
Backport of LEDE 9f422eba7c1a297a96a03b1cce05fa3cb9d71a4a
|
|
|
|
diff --git a/target/linux/x86/base-files/lib/upgrade/platform.sh b/target/linux/x86/base-files/lib/upgrade/platform.sh
|
|
index c21f1a7e5feba553110f138c14977daaa472da70..f12deebf6484df6f3f69e453ad67688a76d57972 100644
|
|
--- a/target/linux/x86/base-files/lib/upgrade/platform.sh
|
|
+++ b/target/linux/x86/base-files/lib/upgrade/platform.sh
|
|
@@ -61,7 +61,27 @@ get_partitions() { # <device> <filename>
|
|
|
|
if [ -b "$disk" -o -f "$disk" ]; then
|
|
echo "Reading partition table from $filename..."
|
|
- partx -r "$disk" -gbo NR,START,SECTORS > "/tmp/partx.$filename"
|
|
+
|
|
+ local magic="$(hexdump -v -n 2 -s 0x1FE -e '1/2 "0x%04X"' "$disk")"
|
|
+ if [ "$magic" != 0xAA55 ]; then
|
|
+ echo "Invalid partition table on $disk"
|
|
+ exit
|
|
+ fi
|
|
+
|
|
+ rm -f "/tmp/partmap.$filename"
|
|
+
|
|
+ local part
|
|
+ for part in 1 2 3 4; do
|
|
+ set -- $(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
|
|
+
|
|
+ local type="$(($1 % 256))"
|
|
+ local lba="$(($2))"
|
|
+ local num="$(($3))"
|
|
+
|
|
+ [ $type -gt 0 ] || continue
|
|
+
|
|
+ printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
|
|
+ done
|
|
fi
|
|
}
|
|
|
|
@@ -76,9 +96,11 @@ platform_do_upgrade() {
|
|
|
|
|
|
#get block size
|
|
- sectors="$(partx -r $disk -gbo SECTORS --nr 1:1)"
|
|
- size="$(partx -r $disk -gbo SIZE --nr 1:1)"
|
|
- ibs="$(($size / $sectors))"
|
|
+ if [ -f "/sys/block/${disk##*/}/queue/physical_block_size" ]; then
|
|
+ ibs="$(cat "/sys/block/${disk##*/}/queue/physical_block_size")"
|
|
+ else
|
|
+ ibs=512
|
|
+ fi
|
|
|
|
#extract the boot sector from the image
|
|
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
|
|
@@ -86,7 +108,7 @@ platform_do_upgrade() {
|
|
get_partitions /tmp/image.bs image
|
|
|
|
#compare tables
|
|
- diff="$(grep -F -x -v -f /tmp/partx.bootdisk /tmp/partx.image)"
|
|
+ diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
|
|
if [ -n "$diff" ]; then
|
|
echo "Partition layout is changed. Full image will be written."
|
|
ask_bool 0 "Abort" && exit
|
|
@@ -99,7 +121,7 @@ platform_do_upgrade() {
|
|
while read part start size; do
|
|
echo "Writing image to $disk$part..."
|
|
get_image "$@" | dd of="$disk$part" ibs="$ibs" obs=1M skip="$start" count="$size" conv=fsync
|
|
- done < /tmp/partx.image
|
|
+ done < /tmp/partmap.image
|
|
|
|
#copy partition uuid
|
|
echo "Writing new UUID to $disk$part..."
|