Am 23.01.2013 21:15, schrieb Colin Guthrie:
> Lilo supplies root=900 rather than root=/dev/md0. Similarly it would say
> root=801 rather
> than root=/dev/sda1.
>
> This patch simply interprets that number and creates appropriate udev rules
> to create the /dev/root symlink as needed.
> ---
> modules.d/95rootfs-block/block-genrules.sh | 11 ++++++++++-
> modules.d/95rootfs-block/parse-block.sh | 4 ++++
> 2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/modules.d/95rootfs-block/block-genrules.sh
> b/modules.d/95rootfs-block/block-genrules.sh
> index 7f894ee..161183e 100755
> --- a/modules.d/95rootfs-block/block-genrules.sh
> +++ b/modules.d/95rootfs-block/block-genrules.sh
> @@ -2,7 +2,16 @@
> # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
> # ex: ts=8 sw=4 sts=4 et filetype=sh
>
> -if [ "${root%%:*}" = "block" ]; then
> +if [ -n "$rootdevnum" ]; then
> + major=$(( 0x$rootdevnum / 256 ))
> + minor=$(( 0x$rootdevnum - ( $major * 256 ) ))
> + {
> + printf 'ACTION=="add|change", ENV{MAJOR}=="%d", ENV{MINOR}=="%d",
> SYMLINK+="root"\n' \
> + $major $minor
> + } >> /etc/udev/rules.d/99-root.rules
> +
> + wait_for_dev /dev/root
> +elif [ "${root%%:*}" = "block" ]; then
> {
> printf 'KERNEL=="%s", SYMLINK+="root"\n' \
> ${root#block:/dev/}
> diff --git a/modules.d/95rootfs-block/parse-block.sh
> b/modules.d/95rootfs-block/parse-block.sh
> index 3745352..9efc51f 100755
> --- a/modules.d/95rootfs-block/parse-block.sh
> +++ b/modules.d/95rootfs-block/parse-block.sh
> @@ -19,4 +19,8 @@ case "$root" in
> /dev/*)
> root="block:${root}"
> rootok=1 ;;
> + [1-9][0-9][0-9])
> + rootdevnum=$root
> + root=block:/dev/root
I would do just:
major=$(( 0x$root / 256 ))
minor=$(( 0x$root - ( $major * 256 ) ))
root=/dev/block/$major:$minor
> + rootok=1 ;;
> esac
>
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