hotplug/Linux: remove hotplug support, rely on udev instead

Hotplug has been replaced by udev since several years. Remove the
hotplug related files and install udev unconditionally.

This makes it possible to remove udev from rpm BuildRequires which
reduces the buildtime dependency chain. For openSuSE:Factory it was
done just now:
http://lists.opensuse.org/opensuse-buildservice/2012-10/msg00085.html

The patch by itself will have no practical impact unless someone
attempts to build and run a Xen dom0 on a really old base system. e.g.
circa SLES9/2007 or earlier

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>

2 files changed, 1 insertions, 72 deletions

diff --git a/tools/hotplug/Linux/Makefile b/tools/hotplug/Linux/Makefile
index 5401592ae1..84a4cb1935 100644
--- a/tools/hotplug/Linux/Makefile
+++ b/tools/hotplug/Linux/Makefile
@@ -27,32 +27,9 @@ XEN_SCRIPT_DATA += xen-hotplug-common.sh xen-network-common.sh vif-common.sh
 XEN_SCRIPT_DATA += block-common.sh vtpm-common.sh vtpm-hotplug-common.sh
 XEN_SCRIPT_DATA += vtpm-migration.sh vtpm-impl
 
-XEN_HOTPLUG_DIR = $(CONFIG_DIR)/hotplug
-XEN_HOTPLUG_SCRIPTS = xen-backend.agent
-
-UDEVVER = 0
-ifeq ($(shell [ -x /sbin/udevadm ] && echo 1),1)
-UDEVVER = $(shell /sbin/udevadm info -V | sed -e 's/^[^0-9]* \([0-9]\{1,\}\)[^0-9]\{0,\}/\1/' )
-endif
-ifeq ($(shell [ -x /usr/bin/udevinfo ] && echo 1),1)
-UDEVVER = $(shell /usr/bin/udevinfo -V | sed -e 's/^[^0-9]* \([0-9]\{1,\}\)[^0-9]\{0,\}/\1/' )
-endif
-
 UDEV_RULES_DIR = $(CONFIG_DIR)/udev
 UDEV_RULES = xen-backend.rules xend.rules
 
-DI = $(if $(DISTDIR),$(shell readlink -f $(DISTDIR)),)
-DE = $(if $(DESTDIR),$(shell readlink -f $(DESTDIR)),)
-ifeq ($(findstring $(DI),$(DE)),$(DI))
-HOTPLUGS=install-hotplug install-udev
-else
-ifeq ($(shell [ $(UDEVVER) -ge 059 ] && echo 1),1)
-HOTPLUGS=install-udev
-else
-HOTPLUGS=install-hotplug
-endif
-endif
-
 .PHONY: all
 all:
 
@@ -60,7 +37,7 @@ all:
 build:
 
 .PHONY: install
-install: all install-initd install-scripts $(HOTPLUGS)
+install: all install-initd install-scripts install-udev
 
 # See docs/misc/distro_mapping.txt for INITD_DIR location
 .PHONY: install-initd
@@ -87,15 +64,6 @@ install-scripts:
 	    $(INSTALL_DATA) $$i $(DESTDIR)$(XEN_SCRIPT_DIR); \
 	done
 
-.PHONY: install-hotplug
-install-hotplug:
-	[ -d $(DESTDIR)$(XEN_HOTPLUG_DIR) ] || \
-		$(INSTALL_DIR) $(DESTDIR)$(XEN_HOTPLUG_DIR)
-	set -e; for i in $(XEN_HOTPLUG_SCRIPTS); \
-	    do \
-	    $(INSTALL_PROG) $$i $(DESTDIR)$(XEN_HOTPLUG_DIR); \
-	done
-
 .PHONY: install-udev
 install-udev:
 	[ -d $(DESTDIR)$(UDEV_RULES_DIR) ] || \
diff --git a/tools/hotplug/Linux/xen-backend.agent b/tools/hotplug/Linux/xen-backend.agent
deleted file mode 100644
index 5cb536a6a9..0000000000
--- a/tools/hotplug/Linux/xen-backend.agent
+++ /dev/null
@@ -1,39 +0,0 @@
-#! /bin/bash
-
-PATH=/etc/xen/scripts:$PATH
-
-. /etc/xen/scripts/locking.sh
-
-claim_lock xenbus_hotplug_global
-
-case "$XENBUS_TYPE" in
-  tap)
-    /etc/xen/scripts/blktap "$ACTION"
-    ;;
-  vbd)
-    /etc/xen/scripts/block "$ACTION"
-    ;;
-  vtpm)
-    /etc/xen/scripts/vtpm "$ACTION"
-    ;;
-  vif)
-    [ -n "$script" ] && $script "$ACTION"
-    ;;
-  vscsi)
-    /etc/xen/scripts/vscsi "$ACTION"
-    ;;
-esac
-
-case "$ACTION" in
-  add)
-    ;;
-  remove)
-    /etc/xen/scripts/xen-hotplug-cleanup
-    ;;
-  online)
-    ;;
-  offline)
-    ;;
-esac
-
-release_lock xenbus_hotplug_global