[OE-core] [PATCH] udev: Update initscript to check for devtmpfs

[Khem Raj]

You could also add some more text on how to enable it for the clueless

On Friday, April 12, 2013, Saul Wold <sgw at linux.intel.com> wrote:
> This is needed because the udev_182 now requires devtmpfs and will not
work correctly
> with out, so ensure that the kernel contains devtmpfs by checking
/proc/filesystems.
>
> [YOCTO #4125]
>
> Signed-off-by: Saul Wold <sgw at linux.intel.com>
> ---
>  meta/recipes-core/udev/udev/init | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/meta/recipes-core/udev/udev/init
b/meta/recipes-core/udev/udev/init
> index 37b5231..2a95ab7 100644
> --- a/meta/recipes-core/udev/udev/init
> +++ b/meta/recipes-core/udev/udev/init
> @@ -35,6 +35,14 @@ case "$1" in
>      # propagate /dev from /sys
>      echo "Starting udev"
>
> +    # Check for requireed devtmpfs before trying to start udev and
> +    # mount a no-existant fs.
> +    if ! grep -q devtmpfs /proc/filesystems
> +    then
> +        echo "Missing devtmpfs, which is required for udev to run";
> +        echo "Halting..."
> +        halt
> +    fi
>      # mount the tmpfs on /dev, if not already done
>      LANG=C awk '$2 == "/dev" && ($3 == "tmpfs" || $3 == "devtmpfs") {
exit 1 }' /proc/mounts && {
>              mount -n -o mode=0755 -t tmpfs none "/dev"
> --
> 1.8.0.2
>
>
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