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-rwxr-xr-xextras/path_id129
1 files changed, 58 insertions, 71 deletions
diff --git a/extras/path_id b/extras/path_id
index 44fc4820b5..af1837a77d 100755
--- a/extras/path_id
+++ b/extras/path_id
@@ -15,33 +15,37 @@
# DEVPATH=/block/sda/sda3 path_id
# path_id <devpath>
-# example for all block devices on a system:
-# for i in `find /sys/block -name dev` ;do DEVPATH="`echo $i | sed -e 's@^/sys\|/dev@@g'`" path_id ; done
+# examples for all block devices on a system:
+# for i in `find /sys/class/block`; do DEVPATH="`echo $i | sed -e 's@^/sys\|/dev@@g'`"; path_id; done
-# examples:
# SCSI cdrom
-# /block/sr0 -> /devices/pci0002:30/0002:30:0c.0/host0/0:0:1:0
-# result: pci-0002:30:0c.0-scsi-0:0:1:0
+# /class/block/sr0 -> /devices/pci0002:30/0002:30:0c.0/host0/target0:0:0/0:0:1:0
+# pci-0002:30:0c.0-scsi-0:0:1:0
+#
# SCSI disk
-# /block/sda -> /devices/pci0002:30/0002:30:0c.0/host0/0:0:4:0
-# result: pci-0002:30:0c.0-scsi-0:0:4:0
+# /class/block/sda -> /devices/pci0002:30/0002:30:0c.0/host0/target0:0:0/0:0:4:0
+# pci-0002:30:0c.0-scsi-0:0:4:0
+#
# SATA disk, 4 channels per controller
-# /block/sda -> /devices/pci0001:00/0001:00:07.0/0001:05:0c.0/host0/0:0:0:0
-# result: pci-0001:05:0c.0-scsi-0:0:0:0
+# /class/block/sda -> /devices/pci0001:00/0001:00:07.0/0001:05:0c.0/host0/target0:0:0/0:0:0:0
+# pci-0001:05:0c.0-scsi-0:0:0:0
+#
# IDE disk
-# /block/hda -> /devices/pci0002:02/0002:02:0d.0/ide0/0.0
-# result: pci-0002:02:0d.0-ide-0.0
+# /class/block/hda -> /devices/pci0002:02/0002:02:0d.0/ide0/0.0
+# pci-0002:02:0d.0-ide-0.0
+#
# IDE cdrom on a Mac ASIC:
-# /block/hdc -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.00020000:ata-3/ide1/1.0
-# result: mac-io_ata-3_master
+# /class/block/hdc -> /devices/pci0001:01/0001:01:17.0/0.80000000:mac-io/0.00020000:ata-3/ide1/1.0
+# mac-io_ata-3_master
+#
# IDE cdrom on a Mac ASIC, with ide-scsi:
-# /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
-# result: mac-io_ata-4_slave
+# /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
+# mac-io_ata-4_slave
# USB CDrom drive without 'serial' number:
# reusing 'product' and 'manufacturer' string, if available
-# /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
-# result: usb-storage-odd-Freecom-USIDERev930:0:0:0
+# /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
+# usb-storage-odd-Freecom-USIDERev930:0:0:0
# devices may have several interfaces on one PCI device, like IDE:
# pci-0001:00:04.0_ide1-master
@@ -52,24 +56,14 @@
# interface
#
# match order is important.
-# first IDE to find ide-scsi devices.
-# then SCSI
-# first usb-storage
-# then firewire sbp2
-# then the rest
+# first IDE to find ide-scsi devices, then SCSI
+# first usb-storage, then firewire sbp2, then the rest
SYSFS=/sys
RESULT=1
-CDROM=
TYPE=
OPWD="`pwd`"
-# Check for 'pwd -P'
-if $(pwd -P > /dev/null 2>&1); then
- pwd_cmd="pwd -P"
-else
- pwd_cmd="pwd"
-fi
-full_sysfs_class_path=
+full_sysfs_path=
full_sysfs_device_path=
if [ -z "$DEVPATH" -a -z "$1" ] ; then
@@ -87,29 +81,28 @@ if [ -z "$DEVPATH" ] ; then
esac
fi
-if [ ! -d $SYSFS$DEVPATH ] ; then
- exit 1
-fi
-if [ ! -f $SYSFS$DEVPATH/dev ] ; then
+if [ ! -e $SYSFS$DEVPATH/dev ] ; then
exit 1
fi
case "$DEVPATH" in
- /block/*)
- TYPE=block
+ /devices/*)
+ cd "$SYSFS$DEVPATH/subsystem";
+ TYPE="`pwd -P`"
+ cd "$OPWD"
+ TYPE="${TYPE##*/}"
;;
/class/*)
TYPE="${DEVPATH#/class/}"
TYPE="${TYPE%%/*}"
;;
+ /block/*)
+ TYPE=block
+ ;;
*)
exit 1
;;
esac
-
-#
-##
-#
get_port () {
local type offset port
@@ -183,7 +176,7 @@ handle_block_ide () {
;;
/sys/devices)
# PCMCIA devices
- ifname=${full_sysfs_class_path##*/}
+ ifname=${full_sysfs_path##*/}
set -- `sed -n "/$ifname/p" /var/lib/pcmcia/stab`
d="pcmcia-$1"
;;
@@ -202,7 +195,6 @@ handle_block_ide () {
else
d="${d}-ide-${port}:$channel"
fi
-
RESULT=0
}
@@ -301,25 +293,35 @@ handle_block_usb_storage () {
fi
d="$d:$cil"
RESULT=0
-
-
}
handle_block () {
- full_sysfs_class_path="$SYSFS$DEVPATH"
- if [ ! -f $full_sysfs_class_path/dev ] ; then return ; fi
- # the main device has (hopefully) a symlink to the real device
- # a partition is a subdir of the main (raw) device
- if [ ! -L $full_sysfs_class_path/device ] ; then
- if [ -f $full_sysfs_class_path/range ] ; then return ; fi
- full_sysfs_class_path="${full_sysfs_class_path%/*}"
- : full_sysfs_class_path "$full_sysfs_class_path"
- if [ ! -L $full_sysfs_class_path/device -o ! -f $full_sysfs_class_path/dev ] ; then
- return
+ full_sysfs_path="$SYSFS$DEVPATH"
+ if [ -L $full_sysfs_path/subsystem ]; then
+ # new sysfs block layout
+ full_sysfs_path="${full_sysfs_path%/*}"
+ cd "$full_sysfs_path/subsystem";
+ subsys="`pwd -P`"
+ cd "$OPWD"
+ subsys="${subsys##*/}"
+ if [ "$subsys" == "block" ]; then
+ # parent is "block", it's a partition, move one up
+ full_sysfs_path="${full_sysfs_path%/*}"
fi
+ cd $full_sysfs_path
+ else
+ # old sysfs block layout
+ if [ ! -L $full_sysfs_path/device ] ; then
+ if [ -f $full_sysfs_path/range ] ; then return ; fi
+ full_sysfs_path="${full_sysfs_path%/*}"
+ : full_sysfs_path "$full_sysfs_path"
+ if [ ! -L $full_sysfs_path/device -o ! -f $full_sysfs_path/dev ] ; then
+ return
+ fi
+ fi
+ cd $full_sysfs_path/device
fi
- cd $full_sysfs_class_path/device
- full_sysfs_device_path="`$pwd_cmd`"
+ full_sysfs_device_path="`pwd -P`"
cd "$OPWD"
D=$full_sysfs_device_path
case "$D" in
@@ -361,27 +363,12 @@ handle_block () {
handle_block_scsi "$D"
fi
;;
-
*)
: not handled
RESULT=1
return
-
;;
esac
- # look for a partition
- if [ "$full_sysfs_class_path" != "$SYSFS$DEVPATH" ] ; then
- dp="`echo $SYSFS$DEVPATH | sed -e 's@^/.*/@@;s@^[^0-9]\{1,\}@@;s@.*_@@'`"
- case "$d" in
- *[0-9])
- d="${d}p${dp}"
- ;;
- *)
- d="${d}${dp}"
- ;;
- esac
- fi
- # done
echo "ID_PATH=$d"
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-25 05:39:49 +0000