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path_id: work with "all devices in /sys/devices"
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
This commit is contained in:
Kay Sievers
129
extras/path_id
129
extras/path_id
@@ -15,33 +15,37 @@
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# DEVPATH=/block/sda/sda3 path_id
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# path_id <devpath>
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# example for all block devices on a system:
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# for i in `find /sys/block -name dev` ;do DEVPATH="`echo $i | sed -e 's@^/sys\|/dev@@g'`" path_id ; done
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# examples for all block devices on a system:
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# for i in `find /sys/class/block`; do DEVPATH="`echo $i | sed -e 's@^/sys\|/dev@@g'`"; path_id; done
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# examples:
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# SCSI cdrom
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# /block/sr0 -> /devices/pci0002:30/0002:30:0c.0/host0/0:0:1:0
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# result: pci-0002:30:0c.0-scsi-0:0:1:0
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# /class/block/sr0 -> /devices/pci0002:30/0002:30:0c.0/host0/target0:0:0/0:0:1:0
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# pci-0002:30:0c.0-scsi-0:0:1:0
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#
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# SCSI disk
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# /block/sda -> /devices/pci0002:30/0002:30:0c.0/host0/0:0:4:0
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# result: pci-0002:30:0c.0-scsi-0:0:4:0
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# /class/block/sda -> /devices/pci0002:30/0002:30:0c.0/host0/target0:0:0/0:0:4:0
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# pci-0002:30:0c.0-scsi-0:0:4:0
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#
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# SATA disk, 4 channels per controller
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# /block/sda -> /devices/pci0001:00/0001:00:07.0/0001:05:0c.0/host0/0:0:0:0
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# result: pci-0001:05:0c.0-scsi-0:0:0:0
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# /class/block/sda -> /devices/pci0001:00/0001:00:07.0/0001:05:0c.0/host0/target0:0:0/0:0:0:0
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# pci-0001:05:0c.0-scsi-0:0:0:0
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#
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# IDE disk
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# /block/hda -> /devices/pci0002:02/0002:02:0d.0/ide0/0.0
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# result: pci-0002:02:0d.0-ide-0.0
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# /class/block/hda -> /devices/pci0002:02/0002:02:0d.0/ide0/0.0
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# pci-0002:02:0d.0-ide-0.0
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#
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# IDE cdrom on a Mac ASIC:
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# /block/hdc -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.00020000:ata-3/ide1/1.0
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# result: mac-io_ata-3_master
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# /class/block/hdc -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.00020000:ata-3/ide1/1.0
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# mac-io_ata-3_master
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#
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# IDE cdrom on a Mac ASIC, with ide-scsi:
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# /block/sr0 -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.0001f000:ata-4/ide0/0.1/host2/2:0:0:0
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# result: mac-io_ata-4_slave
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# /class/block/sr0 -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.0001f000:ata-4/ide0/0.1/host2/target2:0:0/2:0:0:0
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# mac-io_ata-4_slave
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# USB CDrom drive without 'serial' number:
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# reusing 'product' and 'manufacturer' string, if available
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# /block/sr0 -> /devices/pci0001:00/0001:00:04.0/0001:02:0b.0/usb4/4-2/4-2:1.0/host4/4:0:0:0
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# result: usb-storage-odd-Freecom-USIDERev930:0:0:0
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# /class/block/sr0 -> /devices/pci0001:00/0001:00:04.0/0001:02:0b.0/usb4/4-2/4-2:1.0/host4/4:0:0:0
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# usb-storage-odd-Freecom-USIDERev930:0:0:0
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# devices may have several interfaces on one PCI device, like IDE:
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# pci-0001:00:04.0_ide1-master
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@@ -52,24 +56,14 @@
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# interface
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#
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# match order is important.
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# first IDE to find ide-scsi devices.
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# then SCSI
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# first usb-storage
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# then firewire sbp2
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# then the rest
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# first IDE to find ide-scsi devices, then SCSI
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# first usb-storage, then firewire sbp2, then the rest
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SYSFS=/sys
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RESULT=1
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CDROM=
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TYPE=
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OPWD="`pwd`"
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# Check for 'pwd -P'
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if $(pwd -P > /dev/null 2>&1); then
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pwd_cmd="pwd -P"
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else
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pwd_cmd="pwd"
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fi
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full_sysfs_class_path=
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full_sysfs_path=
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full_sysfs_device_path=
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if [ -z "$DEVPATH" -a -z "$1" ] ; then
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@@ -87,29 +81,28 @@ if [ -z "$DEVPATH" ] ; then
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esac
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fi
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if [ ! -d $SYSFS$DEVPATH ] ; then
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exit 1
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fi
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if [ ! -f $SYSFS$DEVPATH/dev ] ; then
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if [ ! -e $SYSFS$DEVPATH/dev ] ; then
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exit 1
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fi
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case "$DEVPATH" in
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/block/*)
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TYPE=block
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/devices/*)
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cd "$SYSFS$DEVPATH/subsystem";
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TYPE="`pwd -P`"
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cd "$OPWD"
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TYPE="${TYPE##*/}"
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;;
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/class/*)
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TYPE="${DEVPATH#/class/}"
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TYPE="${TYPE%%/*}"
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;;
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/block/*)
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TYPE=block
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;;
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*)
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exit 1
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;;
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esac
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#
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##
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#
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get_port () {
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local type offset port
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@@ -183,7 +176,7 @@ handle_block_ide () {
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;;
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/sys/devices)
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# PCMCIA devices
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ifname=${full_sysfs_class_path##*/}
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ifname=${full_sysfs_path##*/}
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set -- `sed -n "/$ifname/p" /var/lib/pcmcia/stab`
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d="pcmcia-$1"
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;;
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@@ -202,7 +195,6 @@ handle_block_ide () {
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else
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d="${d}-ide-${port}:$channel"
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fi
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RESULT=0
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}
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@@ -301,25 +293,35 @@ handle_block_usb_storage () {
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fi
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d="$d:$cil"
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RESULT=0
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}
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handle_block () {
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full_sysfs_class_path="$SYSFS$DEVPATH"
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if [ ! -f $full_sysfs_class_path/dev ] ; then return ; fi
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# the main device has (hopefully) a symlink to the real device
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# a partition is a subdir of the main (raw) device
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if [ ! -L $full_sysfs_class_path/device ] ; then
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if [ -f $full_sysfs_class_path/range ] ; then return ; fi
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full_sysfs_class_path="${full_sysfs_class_path%/*}"
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: full_sysfs_class_path "$full_sysfs_class_path"
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if [ ! -L $full_sysfs_class_path/device -o ! -f $full_sysfs_class_path/dev ] ; then
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return
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full_sysfs_path="$SYSFS$DEVPATH"
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if [ -L $full_sysfs_path/subsystem ]; then
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# new sysfs block layout
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full_sysfs_path="${full_sysfs_path%/*}"
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cd "$full_sysfs_path/subsystem";
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subsys="`pwd -P`"
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cd "$OPWD"
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subsys="${subsys##*/}"
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if [ "$subsys" == "block" ]; then
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# parent is "block", it's a partition, move one up
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full_sysfs_path="${full_sysfs_path%/*}"
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fi
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cd $full_sysfs_path
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else
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# old sysfs block layout
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if [ ! -L $full_sysfs_path/device ] ; then
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if [ -f $full_sysfs_path/range ] ; then return ; fi
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full_sysfs_path="${full_sysfs_path%/*}"
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: full_sysfs_path "$full_sysfs_path"
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if [ ! -L $full_sysfs_path/device -o ! -f $full_sysfs_path/dev ] ; then
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return
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fi
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fi
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cd $full_sysfs_path/device
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fi
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cd $full_sysfs_class_path/device
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full_sysfs_device_path="`$pwd_cmd`"
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full_sysfs_device_path="`pwd -P`"
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cd "$OPWD"
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D=$full_sysfs_device_path
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case "$D" in
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@@ -361,27 +363,12 @@ handle_block () {
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handle_block_scsi "$D"
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fi
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;;
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*)
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: not handled
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RESULT=1
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return
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;;
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esac
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# look for a partition
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if [ "$full_sysfs_class_path" != "$SYSFS$DEVPATH" ] ; then
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dp="`echo $SYSFS$DEVPATH | sed -e 's@^/.*/@@;s@^[^0-9]\{1,\}@@;s@.*_@@'`"
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case "$d" in
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*[0-9])
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d="${d}p${dp}"
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;;
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*)
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d="${d}${dp}"
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;;
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esac
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fi
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# done
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echo "ID_PATH=$d"
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}
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