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authorAlan Stern <stern@rowland.harvard.edu>2008-10-06 11:24:26 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2008-10-17 14:41:03 -0700
commit2da41d5f6c036e7a6e496a7e601a685f8b87acb0 (patch)
treef3bbc143b16e63fa3950f3379851504add6e4d97 /drivers/usb
parentbb78a825fa91621e52b9a5409fd9ef07895275bf (diff)
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: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/core/devio.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 7a4fa791dc19..528befdcc781 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -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);