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path_id: prepare for new sysfs layout

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This commit is contained in:
Kay Sievers 2006-07-09 21:32:55 +02:00
parent 989e081131
commit c2e04d6b8b
1 changed files with 28 additions and 23 deletions
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51
extras/path_id/path_id
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@ -407,30 +407,35 @@ handle_usb () {
handle_device () {
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 $full_sysfs_path/dev ] ; then
return
case "$DEVPATH" in
/devices/*)
# new sysfs layout
if [ -L $full_sysfs_path/subsystem ]; then
full_sysfs_path="${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
fi
fi
cd $full_sysfs_path/device
fi
;;
*)
# old sysfs 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 $full_sysfs_path/device
;;
esac
full_sysfs_device_path="`pwd -P`"
cd "$OPWD"
D=$full_sysfs_device_path