File multipath-tools-add-udev-callouts of Package multipath-tools

commit 8414f018bc75c7bfb0b59d8b184d7844c52e8e40
Author: Hannes Reinecke <hare@acerbis.suse.de>
Date:   Fri Feb 29 16:40:28 2008 +0100

Add kpartx_id and mpath_id for udev
    
    Helper programs for udev.
    
    Signed-off-by: Hannes Reinecke <hare@suse.de>

diff --git a/Makefile.inc b/Makefile.inc
index 1b07ab0..21fa557 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -22,6 +22,7 @@ endif
 prefix      = 
 exec_prefix = $(prefix)
 bindir      = $(exec_prefix)/sbin
+udevdir	    = $(prefix)/etc/udev/rules.d
 libudevdir  = ${prefix}/lib/udev
 checkersdir = $(TOPDIR)/libcheckers
 libpriodir  = $(TOPDIR)/libprio
diff --git a/kpartx/Makefile b/kpartx/Makefile
index d979cc5..a1284ff 100644
--- a/kpartx/Makefile
+++ b/kpartx/Makefile
@@ -39,6 +39,7 @@ install: $(EXEC) $(EXEC).8
 	install -m 755 $(EXEC) $(DESTDIR)$(bindir)
 	install -d $(DESTDIR)$(mandir)
 	install -m 644 $(EXEC).8 $(DESTDIR)$(mandir)
+	install -m 755 kpartx_id $(DESTDIR)$(bindir)
 
 uninstall:
 	rm -f $(DESTDIR)$(bindir)/$(EXEC)
diff --git a/kpartx/kpartx_id b/kpartx/kpartx_id
index 81f32bf..2c9f617 100644
--- /dev/null
+++ b/kpartx/kpartx_id
@@ -0,0 +1,61 @@
+#!/bin/bash
+#
+# kpartx_id
+#
+# Checks whether a given dm table is a table for a partition
+# on a multipathed device as created by kpartx.
+#
+# A table has been created by kpartx if
+# 1) it is of type 'linear'
+# 2) has exactly one dependency
+# 3) this dependency is of type 'multipath'
+#
+
+DMSETUP=/sbin/dmsetup
+
+MAJOR=$1
+MINOR=$2
+
+if [ -z "$MAJOR" -o -z "$MINOR" ]; then
+    echo "usage: $0 major minor"
+    exit 1;
+fi
+
+# 1) Check for dependencies
+tbldeps=$($DMSETUP deps -j $MAJOR -m $MINOR)
+if [ $? -ne 0 ] || [ -z "$tbldeps" ]; then
+    exit $?
+fi
+
+numdeps=${tbldeps%dependen*}
+if [ "$numdeps" -ne 1 ]; then
+    exit $numdeps
+fi
+
+# 2) Check for table type
+tbldef=$($DMSETUP table -j $MAJOR -m $MINOR)
+if [ $? -ne 0 ] || [ -z "$tbldef" ]; then
+    exit $?
+fi
+set -- $tbldef
+
+if [ "$3" != "linear" ]; then
+    echo "Not a linear table"
+    exit 10
+fi
+
+# 3) Check if the container is a multipath table
+tblmajor=${4%:*}
+tblminor=${4#*:}
+
+tbldef=$($DMSETUP table -j $tblmajor -m $tblminor)
+if [ $? -ne 0 ] || [ -z "$tbldef" ]; then
+    exit $?
+fi
+set -- $tbldef
+
+if [ "$3" != "multipath" ]; then
+    exit 20
+fi
+
+exit 0
diff --git a/multipathd/Makefile b/multipathd/Makefile
index 7179096..42e1edd 100644
--- a/multipathd/Makefile
+++ b/multipathd/Makefile
@@ -56,11 +56,16 @@ install:
 	install -m 644 71-multipath.rules $(DESTDIR)$(udevdir)
 	install -m 644 72-multipath-compat.rules $(DESTDIR)$(udevdir)
 	install -m 644 96-multipath-late.rules $(DESTDIR)$(udevdir)
+	install -m 755 mpath_id $(DESTDIR)$(bindir)
 
 uninstall:
 	rm -f $(DESTDIR)$(bindir)/$(EXEC)
 	rm -f $(DESTDIR)$(rcdir)/$(EXEC)
 	rm -f $(DESTDIR)$(mandir)/$(EXEC).8
+	rm -f $(DESTDIR)$(udevdir)/71-multipath.rules
+	rm -f $(DESTDIR)$(udevdir)/72-multipath-compat.rules
+	rm -f $(DESTDIR)$(udevdir)/96-multipath-late.rules
+	rm -f $(DESTDIR)$(udevdir)/mpath_id
 
 clean:
 	$(MAKE) -C $(multipathdir) prepare DAEMON=1
diff --git a/multipathd/mpath_id b/multipathd/mpath_id
new file mode 100644
index 0000000..38358dc
--- /dev/null
+++ b/multipathd/mpath_id
@@ -0,0 +1,57 @@
+#!/bin/sh
+
+major=$1
+minor=$2
+
+# Check for linear (kpartx) tables first
+mptbl=$(/sbin/dmsetup table -j $major -m $minor --target linear)
+if [ "$mptbl" ] ; then
+    set -- $mptbl
+    mpathmajor=${4%%:*}
+    mpathminor=${4##*:}
+    if [ "$mpathmajor" -ne "$major" ] ; then
+	 # Not a device mapper device, exit
+	exit 1
+    fi
+else
+    mpathmajor=$major
+    mpathminor=$minor
+fi
+
+mpstatus=$(/sbin/dmsetup status -j $mpathmajor -m $mpathminor --target multipath)
+if [ "$mpstatus" ]; then
+    set -- $mpstatus
+    while [ $# -gt 0 ] ; do
+	: $1
+	case $1 in
+	    *:*)
+		devmajor=${1%%:*}
+		devminor=${1##*:}
+		line=$(sed -n "/ *$devmajor *$devminor .*/p" /proc/partitions)
+		devname=${line##* }
+		;;
+	esac
+	[ "$devname" ] && break
+	shift
+    done
+
+    case "$devname" in
+	dasd*)
+	    echo ID_BUS=\"ccw\" ;;
+	*)
+	    echo ID_BUS=\"scsi\" ;;
+    esac
+else
+    # Not a multipath device, exit
+    exit 1
+fi
+
+mpid=$(/sbin/dmsetup info -c --noopencount --noheadings -o name -j $major -m $minor)
+
+if [ -z "$mpid" ]; then
+	exit 1
+fi
+echo ID_MPATH=\"$mpid\"
+
+exit 0
+