[PATCH] add the physical device and the bus to the hotplug environment
Add the sysfs path of the physical device to the hotplug event of class and block devices. This should solve the userspace issue not to know if the device is a virtual one and the "device" symlink will never be created, but we sit there and wait for it to show up not knowing when we should give up. Also the bus name is added to the hotplug event, so we don't need to reverse lookup in the /sys/bus/* directory which bus our physical device belongs to. This is e.g. the value matched against the BUS= key, that may be used in an udev rule. This is a PCI network card: ACTION=add SUBSYSTEM=net DEVPATH=/class/net/eth0 PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:02:01.0 PHYSDEVBUS=pci INTERFACE=eth0 SEQNUM=827 PATH=/sbin:/bin:/usr/sbin:/usr/bin HOME=/ This is a IDE CDROM: ACTION=add SUBSYSTEM=block DEVPATH=/block/hdc PHYSDEVPATH=/devices/pci0000:00/0000:00:1f.1/ide1/1.0 PHYSDEVBUS=ide SEQNUM=1017 PATH=/sbin:/bin:/usr/sbin:/usr/bin HOME=/ This is an USB-stick partition: ACTION=add SUBSYSTEM=block DEVPATH=/block/sda/sda1 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/host1/target1:0:0/1:0:0:0 PHYSDEVBUS=scsi SEQNUM=1032 PATH=/sbin:/bin:/usr/sbin:/usr/bin HOME=/ Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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