On Fri, Jul 3, 2009 at 17:25, unni krishnan<unnikrishnan.a@xxxxxxxxx> wrote: > Hi All, > > I am trying to understand the hotplugging in Linux. I am new to > Linux kernel and its subsystems. I found this article on LJ > > http://www.linuxjournal.com/article/5604 > > As per that, the USB device will call /sbin/hotplug with arguments > > argv [0] = hotplug_path > argv [1] = "usb" > argv [2] = 0 > > Also the module auto detection script provided in that article uses > those arguments. I have tried that script in my system with kernel > 2.6.29-ARCH > > But I found that the arguments are not passing to the script through > /proc/...../hotplug > > Also I am not able to understand this part : > > IFS=/ > set $PRODUCT '' > usb_idVendor=$1 > usb_idProduct=$2 > IFS="$DEFAULT_IFS" > > From where that script is getting the vendor id and product id. That > script is not working in this kernel, so I assume that some changes > happened with current Linux hotplugging. I am not able to find any > useful article or something to find the current changes. It will be > helpful, if any one help me to understand the working of script and > current changes that happened. Nobody is using any of this stuff since years. /sbin/hotplug is long dead and completely disabled, unsually in the kernel itself. Everything is handled by udev. There are no shell scripts, no module scripts, nothing like this. An also outdated, but half way to what we are doing today is here: http://vrfy.org/log/recent-state-of-udev.html Kay -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
