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Commit 2da41d5f authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman
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USB: snoop processes opening usbfs device files 



This patch (as1148) adds a new "snoop" message to usbfs when a device
file is opened, identifying the process responsible.  This comes in
extremely handy when trying to determine which program is doing some
unwanted USB access.

Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent bb78a825

drivers/usb/core/devio.c

+2 −0
Original line number Diff line number Diff line
@@ -624,6 +624,8 @@ static int usbdev_open(struct inode *inode, struct file *file) 
	smp_wmb();

	list_add_tail(&ps->list, &dev->filelist);

	file->private_data = ps;

	snoop(&dev->dev, "opened by process %d: %s\n", task_pid_nr(current),

			current->comm);

 out:

	if (ret) {

		kfree(ps);