Sorry for reply so late. I'm an intern and I cannot test your suggestion in the past two days. I didn't fully understand this udev stuff and your reply, and here is my questions: a. about ":=" The man page says that the ":=" means that "Assign a value to a key finally; disallow any later changes, which may be used to prevent changes by any later rules." So I think a rule like this: SUBSYSTEMS=="usb", ACTION=="add", RUN:="/test.sh usb" will prevent adding more programs to RUN, and finally stop calling any "modprobe" in /lib/udev/rules.d/80-drivers.rules so that drivers are not loaded. But the usb devices are still working. b. The function of steps 2 My environment is a costumed Linux, I cannot find /lib/modules/$(uname -r) directory... c. how to identify the device is a usb device. Just seeing the examples on http://www.reactivated.net/writing_udev_rules.html, I'm more confused. Each usb device has a particular match keys. I just want to know whether this device is connecting to usb ports, and manage it. If anybody has some hints, please tell me. Thanks! 2012/6/5 <Ashish_Bunkar@xxxxxxxx>: > If this is the case here are the steps you can use : > 1. You can tweak udev rules for USB storagedevices. > 2. You can explicitely can make your kernel to not load usb storage driver as below > > $ ls /lib/modules/$(uname -r)/kernel/drivers/usb/storage/usb-storage.ko > $ mv /lib/modules/$(uname -r)/kernel/drivers/usb/storage/usb-storage.ko /root > > Thanks > ASHU > > -----Original Message----- > From: kernelnewbies-bounces@xxxxxxxxxxxxxxxxx [mailto:kernelnewbies-bounces@xxxxxxxxxxxxxxxxx] On Behalf Of ??? > Sent: Tuesday, June 05, 2012 12:33 PM > To: kernelnewbies > Subject: Fwd: How can I disable all USB devices? > > Thanks for reply! But it seems not suitable for my job. > > Sorry for that I didn't talk about my situation clearly. I was asked to only enable usb Network Interface Card, and disable all other usb devices(like keyboard, mouse, stick, etc.). > > I need a way to distinguish different usb devices and disable/enable them. If anyone has some idea, please tell me. > > 2012/6/5 <Ashish_Bunkar@xxxxxxxx>: >> Hi >> >> You can just disable the USB support for your kernel by editing kernel parameters. >> Just add "nousb" to you kernel parameters In "/etc/grub.conf" and your kernel should not support USB device thereafter. >> Also when you would like to enable them again just remove "nousb" from kernel command line and all should work fine with that. >> >> Please let me know if that helped you. >> >> Ashish Bunkar >> Linux Engineering >> Dell | BDC >> office +91-80-28078131, mobile +91-7259183696 Ashish_Bunkar@xxxxxxxx >> >> >> >> -----Original Message----- >> From: kernelnewbies-bounces@xxxxxxxxxxxxxxxxx [mailto:kernelnewbies-bounces@xxxxxxxxxxxxxxxxx] On Behalf Of ??? >> Sent: Tuesday, June 05, 2012 8:48 AM >> To: kernelnewbies >> Subject: How can I disable all USB devices? >> >> Hi there, >> >> I want to disable all my USB devices (mouse, keyboard,... ) now, but hope to enable some certain device in the future. And I don't want to recompile kernel or disable usb module. >> >> I've searched on the Internet, and it seems that udev manage devices connecting to my computer. Can I use udev to disable all USB devices? >> >> Thanks! >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
