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	:	/ lib / udev /

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File kpartx_id

#!/bin/sh
#
# kpartx_id
#
# Generates ID information for device-mapper tables.
#
# Copyright (C) 2006 SUSE Linux Products GmbH
# Author:
#       Hannes Reinecke <hare@suse.de>
#
#
#       This program is free software; you can redistribute it and/or modify it
#       under the terms of the GNU General Public License as published by the
#       Free Software Foundation version 2 of the License.
#
# This script generates ID information used to generate persistent symlinks.
# It relies on the UUID strings generated by the various programs; the name
# of the tables are of no consequence.
#
# Please note that dmraid does not provide the UUIDs (yet); a patch has been
# sent upstream but has not been accepted yet.
#

DMSETUP=/sbin/dmsetup

MAJOR=$1
MINOR=$2
UUID=$3

if [ -z "$MAJOR" -o -z "$MINOR" ]; then
    echo "usage: $0 major minor"
    exit 1;
fi

# Device-mapper not installed; not an error
if [ ! -x $DMSETUP ] ; then
    exit 0
fi

# Table UUIDs are always '<type>-<uuid>'.
dmuuid=${UUID#*-}
dmtbl=${UUID%%-*}
dmpart=${dmtbl#part}
dmserial=
# kpartx types are 'part<num>'
if [ "$dmpart" = "$dmtbl" ] ; then
    dmpart=
else
    dmtbl=part
fi

# Set the name of the table. We're only interested in dmraid,
# multipath, and kpartx tables; everything else is ignored.
if [ "$dmtbl" = "part" ] ; then
    dmname=$($DMSETUP info  -c --noheadings -o name -u $dmuuid)
    echo "DM_MPATH=$dmname"
    # We need the dependencies of the parent table to figure out
    # the type if the parent is a multipath table
    case "$dmuuid" in
	mpath-*)
	    dmdeps=$($DMSETUP deps -u $dmuuid)
	    dmserial=${dmuuid#mpath-}
	    ;;
    esac
elif [ "$dmtbl" = "mpath" ] ; then
    dmname="$dmuuid"
    dmserial="$dmuuid"
    # We need the dependencies of the table to figure out the type
    dmdeps=$($DMSETUP deps -u $UUID)
fi

[ -n "$dmpart" ] && echo "DM_PART=$dmpart"

# Figure out the type of the map. For non-multipath maps it's
# always 'raid'.
if [ -n "$dmdeps" ] ; then
    case "$dmdeps" in
	*\(94,*)
	    echo "DM_TYPE=ccw"
	    ;;
	*\(104,* | *\(105,* | *\(106,* | *\(107,* | *\(108,* | *\(109,* | *\(110,* | *\(112,*)
	    echo "DM_TYPE=cciss"
	    ;;
	*\(9*)
	    echo "DM_TYPE=raid"
	    ;;
	*)
	    echo "DM_TYPE=scsi"
	    echo "DM_WWN=0x${dmserial#?}"
	    ;;
    esac
else
    echo "DM_TYPE=raid"
fi
if [[ $dmserial ]]; then
    echo "DM_SERIAL=$dmserial"
fi

exit 0

Name	Type	Size	Permission	Last Modified	Actions
.	DIR	-	drwxr-xr-x	2025-04-23 10:58:40
..	DIR	-	dr-xr-xr-x	2025-09-30 10:57:16
hwdb.d	DIR	-	drwxr-xr-x	2025-04-23 10:57:57
rules.d	DIR	-	drwxr-xr-x	2025-08-28 10:58:31
ata_id	application/x-sharedlib	40.73 KB	-rwxr-xr-x	2025-04-22 01:58:57
cdrom_id	application/x-sharedlib	32.51 KB	-rwxr-xr-x	2025-04-22 01:58:57
collect	application/x-sharedlib	20.57 KB	-rwxr-xr-x	2025-04-22 01:58:57
fc_wwpn_id	text/x-shellscript	1.1 KB	-rwxr-xr-x	2022-10-08 11:49:23
fido_id	application/x-sharedlib	16.43 KB	-rwxr-xr-x	2025-04-22 01:58:57
kdump-udev-throttler	text/x-shellscript	1.41 KB	-rwxr-xr-x	2024-09-24 08:36:00
kpartx_id	text/x-shellscript	2.33 KB	-rwxr-xr-x	2025-04-22 01:55:39
mtd_probe	application/x-sharedlib	12.41 KB	-rwxr-xr-x	2025-04-22 01:58:57
prefixdevname	application/x-sharedlib	1.46 MB	-rwxr-xr-x	2019-12-16 07:52:38
rename_device	application/x-sharedlib	16.45 KB	-rwxr-xr-x	2022-10-08 11:08:06
scsi_id	application/x-sharedlib	53.7 KB	-rwxr-xr-x	2025-04-22 01:58:57
v4l_id	application/x-sharedlib	11.99 KB	-rwxr-xr-x	2025-04-22 01:58:57

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