Move udev rules from /etc/udev to /lib/udev

This change moves the default install location for the zfs udev
rules from /etc/udev/ to /lib/udev/.  The correct convention is
for rules provided by a package to be installed in /lib/udev/.
The /etc/udev/ directory is reserved for custom rules or local
overrides.

Additionally, this patch cleans up some abuse of the bindir install
location by adding a udevdir and udevruledir install directories.
This allows us to revert to the default bin install location.  The
udev install directories can be set with the following new options.

  --with-udevdir=DIR      install udev helpers [EPREFIX/lib/udev]
  --with-udevruledir=DIR  install udev rules [UDEVDIR/rules.d]

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #356

Makefile.am

@@ -3,7 +3,7 @@ include $(top_srcdir)/config/deb.am
 include $(top_srcdir)/config/tgz.am
 
 if CONFIG_USER
-USER_DIR = dracut etc man scripts lib cmd
+USER_DIR = dracut udev etc man scripts lib cmd
 endif
 if CONFIG_KERNEL
 KERNEL_DIR = module

cmd/sas_switch_id/Makefile.am

@@ -1 +1 @@
-dist_bin_SCRIPTS = sas_switch_id
+dist_udev_SCRIPTS = sas_switch_id

cmd/zpool_id/Makefile.am

@@ -1 +1 @@
-dist_bin_SCRIPTS = zpool_id
+dist_udev_SCRIPTS = zpool_id

cmd/zvol_id/Makefile.am

@@ -4,7 +4,7 @@ DEFAULT_INCLUDES += \
 	-I$(top_srcdir)/include \
 	-I$(top_srcdir)/lib/libspl/include
 
-bin_PROGRAMS = zvol_id
+udev_PROGRAMS = zvol_id
 
 zvol_id_SOURCES = \
 	$(top_srcdir)/cmd/zvol_id/zvol_id_main.c

config/user-udev.m4

@@ -0,0 +1,14 @@
+AC_DEFUN([ZFS_AC_CONFIG_USER_UDEV], [
+	AC_ARG_WITH(udevdir,
+		AC_HELP_STRING([--with-udevdir=DIR],
+		[install udev helpers [[EPREFIX/lib/udev]]]),
+		udevdir=$withval, udevdir='${exec_prefix}/lib/udev')
+
+	AC_ARG_WITH(udevruledir,
+		AC_HELP_STRING([--with-udevruledir=DIR],
+		[install udev rules [[UDEVDIR/rules.d]]]),
+		udevruledir=$withval, udevruledir='${udevdir}/rules.d')
+
+	AC_SUBST(udevdir)
+	AC_SUBST(udevruledir)
+])

config/user.m4

@@ -2,6 +2,7 @@ dnl #
 dnl # Default ZFS user configuration
 dnl #
 AC_DEFUN([ZFS_AC_CONFIG_USER], [
+	ZFS_AC_CONFIG_USER_UDEV
 	ZFS_AC_CONFIG_USER_ARCH
 	ZFS_AC_CONFIG_USER_IOCTL
 	ZFS_AC_CONFIG_USER_ZLIB

configure.ac

@@ -57,9 +57,9 @@ AC_CONFIG_FILES([
 	Makefile
 	dracut/Makefile
 	dracut/90zfs/Makefile
+	udev/Makefile
+	udev/rules.d/Makefile
 	etc/Makefile
-	etc/udev/Makefile
-	etc/udev/rules.d/Makefile
 	etc/init.d/Makefile
 	etc/init.d/zfs.arch
 	etc/init.d/zfs.gentoo

dracut/90zfs/module-setup.sh

@@ -29,8 +29,8 @@ installkernel() {
 
 install() {
 	inst_rules "$moddir/90-zfs.rules"
-	inst_rules /etc/udev/rules.d/60-zpool.rules
+	inst_rules /lib/udev/rules.d/60-zpool.rules
-	inst_rules /etc/udev/rules.d/60-zvol.rules
+	inst_rules /lib/udev/rules.d/60-zvol.rules
 	inst /etc/zfs/zdev.conf
 	inst /etc/zfs/zpool.cache
 	inst /etc/hostid

etc/Makefile.am

@@ -1 +1 @@
-SUBDIRS = init.d udev zfs
+SUBDIRS = init.d zfs

etc/udev/rules.d/Makefile.am

@@ -1,15 +0,0 @@
-pkgsysconfdir = $(sysconfdir)/udev/rules.d
-
-pkgsysconf_DATA = \
-	60-zpool.rules \
-	60-zvol.rules
-
-EXTRA_DIST = \
-	60-zpool.rules.in \
-	60-zvol.rules.in
-
-$(pkgsysconf_DATA):
-	-$(SED) -e 's,@bindir\@,$(bindir),g' '$@.in' >'$@'
-
-distclean-local::
-	-$(RM) $(pkgsysconf_DATA)

udev/rules.d/60-zpool.rules.in

@@ -1,8 +1,8 @@
 #
-# /etc/udev/rules.d/60-zpool.rules
+# /lib/udev/rules.d/60-zpool.rules
 #
 
-ENV{DEVTYPE}=="disk", IMPORT{program}="@bindir@/zpool_id -d %p"
+ENV{DEVTYPE}=="disk", IMPORT{program}="@udevdir@/zpool_id -d %p"
 
 KERNEL=="*[!0-9]", ENV{SUBSYSTEM}=="block", ENV{ID_ZPOOL}=="?*", SYMLINK+="$env{ID_ZPOOL_PATH}"
 KERNEL=="*[0-9]", ENV{SUBSYSTEM}=="block", ENV{DEVTYPE}=="partition", ENV{ID_ZPOOL}=="?*", SYMLINK+="$env{ID_ZPOOL_PATH}-part%n"

udev/rules.d/60-zvol.rules.in

@@ -3,4 +3,4 @@
 # persistent disk links: /dev/zvol/dataset_name
 # also creates compatibilty symlink of /dev/dataset_name
 
-KERNEL=="zd*" SUBSYSTEM=="block" ACTION=="add|change" PROGRAM="@bindir@/zvol_id $tempnode" SYMLINK+="zvol/%c %c"
+KERNEL=="zd*" SUBSYSTEM=="block" ACTION=="add|change" PROGRAM="@udevdir@/zvol_id $tempnode" SYMLINK+="zvol/%c %c"

udev/rules.d/Makefile.am

@@ -0,0 +1,14 @@
+udevrule_DATA = \
+	60-zpool.rules \
+	60-zvol.rules
+
+EXTRA_DIST = \
+	60-zpool.rules.in \
+	60-zvol.rules.in
+
+$(udevrule_DATA):
+	-$(SED) -e 's,@udevdir\@,$(udevdir),g' '$@.in' >'$@'
+
+distclean-local::
+	-$(RM) $(udevrule_DATA)
+

zfs.spec.in

@@ -3,9 +3,9 @@
 %define release          @ZFS_META_RELEASE@
 %define debug_package    %{nil}
 %define _prefix          /
-%define _bindir          /lib/udev
 %define _libexecdir      /usr/libexec
 %define _datadir         /usr/share
+%define _udevdir         /lib/udev
 
 Summary:         ZFS Library and Utils
 Group:           Utilities/System
@@ -61,7 +61,7 @@ which are ZFS aware.
 %prep
 %setup
 %build
-%configure --with-config=user --without-blkid
+%configure --with-config=user --without-blkid --with-udevdir=%{_udevdir}
 make
 
 %install
@@ -80,8 +80,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/*
 %{_mandir}/man8/*
 %{_sysconfdir}/init.d/*
-%{_sysconfdir}/udev/rules.d/*
 %{_sysconfdir}/zfs/*
+%{_udevdir}/*
+%{_udevdir}/rules.d/*
 
 %files devel
 %defattr(-,root,root)