Root/target/linux/x86/base-files/lib/upgrade/platform.sh

1USE_REFRESH=1
2
3platform_check_image() {
4    [ "$ARGC" -gt 1 ] && return 1
5
6    case "$(get_magic_word "$1")" in
7        eb48) return 0;;
8        *)
9            echo "Invalid image type"
10            return 1
11        ;;
12    esac
13}
14
15platform_do_upgrade() {
16    local ROOTFS
17    sync
18    grep -q -e "jffs2" -e "squashfs" /proc/cmdline \
19        && ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "block2mtd.block2mtd") { print substr($2,1,index($2, ",")-1) }' < /proc/cmdline)" \
20        || ROOTFS="$(awk 'BEGIN { RS=" "; FS="="; } ($1 == "root") { print $2 }' < /proc/cmdline)"
21    [ -b ${ROOTFS%[0-9]} ] && get_image "$1" > ${ROOTFS%[0-9]}
22}
23
24x86_prepare_ext2() {
25    # if we're running from ext2, we need to make sure that we have a mtd
26    # partition that points to the active rootfs partition.
27    # however this only matters if we actually need to preserve the config files
28    [ "$SAVE_CONFIG" -eq 1 ] || return 0
29    grep rootfs /proc/mtd >/dev/null || {
30        echo /dev/hda2,65536,rootfs > /sys/module/block2mtd/parameters/block2mtd
31    }
32}
33append sysupgrade_pre_upgrade x86_prepare_ext2
34

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