[oe] [PATCH 1/3] udev: add compatibility package for old kernels

[Koen Kooi]

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Looks good to me:

Acked-by: Koen Kooi <koen at openembedded.org>

On 16-07-10 01:08, Stanislav Brabec wrote:
> Attached patch creates udev compatibility package that allows to run
> udev on old kernels.
> 
> Changes in udev recipes should have no effect for udev itself, just
> simplifying the udev-compat recipe.
> 
> People that need even older udev can reuse the recipe, copy it with a
> different name and add it to the image.
> 
> The idea was suggested in past by Koen Kooi:
> Subject: [RFC][PATCH] udev 151: fall back to old, static udev if present when running an old kernel
> Date: Sat, 17 Apr 2010 16:03:27 +0200
> 
> This recipe does not create static binary, but a dynamic binary
> statically linked just with udev. Binary names don't contain version, so
> arbitrary compat version can be used without modifying of the wrapper.
> 
>     udev-compat141: Added compatibility udev package for old kernels.
> 
> diff --git a/recipes/udev/udev-compat141_141.bb b/recipes/udev/udev-compat141_141.bb
> new file mode 100644
> index 0000000..3eb99e8
> --- /dev/null
> +++ b/recipes/udev/udev-compat141_141.bb
> @@ -0,0 +1,32 @@
> +# To use this package, you need:
> +# - udev main package with init scrit that supports udev-compat-wrapper (enable per-platform in the udev.inc and udev*.bb files)
> +# - this package must be embedded into the image (otherwise system will refuse to boot)
> +# - only one compat package is supported (pick the newest udev that supports your oldest kernel)
> +#
> +FILESPATHPKG =. "udev-${PV}:udev:"
> +require udev_141.bb
> +S = "${WORKDIR}/udev-${PV}"
> +DESCRIPTION = "udev compatibility helper package for systems that run old kernels"
> +PACKAGES = "${PN} ${PN}-dbg"
> +
> +# Need udev with udev-compat-wrapper support.
> +RDEPENDS_${PN} += "udev-compat-wrapper"
> +# Remove hotplug RPROVIDES
> +RPROVIDES_${PN} = ""
> +
> +# We cannot use newer library: udev_monitor_new_from_netlink_compat() will fail.
> +# We cannot use older udev_monitor_new_from_netlink_compat(): Structures are incompatible.
> +# That is why we link udev statically with the old library.
> +export enable_shared = "no"
> +EXTRA_OECONF += "--enable-static"
> +
> +# Remove everything except udevd and udevadm and rename these two.
> +do_install_append () {
> +	mv ${D}${base_sbindir}/udevd ${D}${base_sbindir}/udevd-compat
> +	mv ${D}${base_sbindir}/udevadm ${D}${base_sbindir}/udevadm-compat
> +	rm -r ${D}${datadir} ${D}${base_libdir} ${D}${libdir} ${D}${includedir} ${D}${sysconfdir}
> +	rmdir ${D}${prefix} 2>/dev/null || true
> +}
> +
> +# Remove udev init script installation
> +INITSCRIPT_PACKAGES = ""
> diff --git a/recipes/udev/udev.inc b/recipes/udev/udev.inc
> index 1fb75fe..c79da97 100644
> --- a/recipes/udev/udev.inc
> +++ b/recipes/udev/udev.inc
> @@ -63,7 +63,7 @@ do_install () {
>  	install -m 0755 ${WORKDIR}/mount.sh ${D}${sysconfdir}/udev/scripts/mount.sh
>  	install -m 0755 ${WORKDIR}/network.sh ${D}${sysconfdir}/udev/scripts
>          install -m 0644 ${S}/extras/volume_id/lib/libvolume_id.h ${D}${includedir}
> -        oe_libinstall -C extras/volume_id/lib -so libvolume_id ${D}${libdir}
> +        oe_libinstall -C extras/volume_id/lib libvolume_id ${D}${libdir}
>  }
>  
>  PACKAGES =+ "udev-utils libvolume-id libvolume-id-dev"
> diff --git a/recipes/udev/udev_141.bb b/recipes/udev/udev_141.bb
> index 27055be..3ef9f7d 100644
> --- a/recipes/udev/udev_141.bb
> +++ b/recipes/udev/udev_141.bb
> @@ -79,7 +79,7 @@ do_install () {
>  
>  	install -m 0755 ${WORKDIR}/mount.sh ${D}${sysconfdir}/udev/scripts/mount.sh
>  	install -m 0755 ${WORKDIR}/network.sh ${D}${sysconfdir}/udev/scripts
> -        oe_libinstall -C udev/lib -so libudev ${D}${libdir}
> +        oe_libinstall -C udev/lib libudev ${D}${libdir}
>          install ${S}/udev/lib/libudev.h ${D}${includedir}
>  }
>  
> @@ -99,7 +99,7 @@ do_install_append_hipox() {
>  }
>  
>  # Create the cache after checkroot has run
> -pkg_postinst_${PN}_append() {
> +pkg_postinst_udev_append() {
>  update-rc.d $OPT udev-cache start 12 S .
>  
>  if [ -d $D/lib/udev/rules.d ] ; then
> diff --git a/recipes/udev/udev_151.bb b/recipes/udev/udev_151.bb
> index 13f3a02..7be56d2 100644
> --- a/recipes/udev/udev_151.bb
> +++ b/recipes/udev/udev_151.bb
> @@ -119,7 +119,7 @@ do_install_append_bug() {
>  }
>  
>  # Create the cache after checkroot has run
> -pkg_postinst_${PN}_append() {
> +pkg_postinst_udev_append() {
>  	update-rc.d $OPT udev-cache start 12 S .
>  }
>  
> diff --git a/recipes/udev/udev_154.bb b/recipes/udev/udev_154.bb
> index cd370e8..5e90e88 100644
> --- a/recipes/udev/udev_154.bb
> +++ b/recipes/udev/udev_154.bb
> @@ -120,6 +120,6 @@ do_install_append_bug() {
>  }
>  
>  # Create the cache after checkroot has run
> -pkg_postinst_${PN}_append() {
> +pkg_postinst_udev_append() {
>  	update-rc.d $OPT udev-cache start 12 S .
>  }
> 

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