renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-19 18:53:52 +08:00
Code

[PATCH] USB: add more snooping hooks in devio.c

Browse Source 
Now we can log the urbs travelling through usbfs

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2005-06-20 21:15:16 -07:00
parent d6e5bcf4a7
commit e639dd3f4e
1 changed files with 50 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
drivers/usb/core/devio.c
View File

@ -279,6 +279,28 @@ static inline struct async *async_getpending(struct dev_state *ps, void __user *
return NULL;
}
static void snoop_urb(struct urb *urb, void __user *userurb)
{
int j;
unsigned char *data = urb->transfer_buffer;
if (!usbfs_snoop)
return;
if (urb->pipe & USB_DIR_IN)
dev_info(&urb->dev->dev, "direction=IN\n");
else
dev_info(&urb->dev->dev, "direction=OUT\n");
dev_info(&urb->dev->dev, "userurb=%p\n", userurb);
dev_info(&urb->dev->dev, "transfer_buffer_length=%d\n",
urb->transfer_buffer_length);
dev_info(&urb->dev->dev, "actual_length=%d\n", urb->actual_length);
dev_info(&urb->dev->dev, "data: ");
for (j = 0; j < urb->transfer_buffer_length; ++j)
printk ("%02x ", data[j]);
printk("\n");
}
static void async_completed(struct urb *urb, struct pt_regs *regs)
{
struct async *as = (struct async *)urb->context;
@ -296,7 +318,9 @@ static void async_completed(struct urb *urb, struct pt_regs *regs)
kill_proc_info_as_uid(as->signr, &sinfo, as->pid, as->uid,
as->euid);
}
wake_up(&ps->wait);
snoop(&urb->dev->dev, "urb complete\n");
snoop_urb(urb, as->userurb);
wake_up(&ps->wait);
}
static void destroy_async (struct dev_state *ps, struct list_head *list)
@ -601,7 +625,7 @@ static int proc_control(struct dev_state *ps, void __user *arg)
if (usbfs_snoop) {
dev_info(&dev->dev, "control read: data ");
for (j = 0; j < i; ++j)
printk ("%02x ", (unsigned char)(tbuf)[j]);
printk("%02x ", (unsigned char)(tbuf)[j]);
printk("\n");
}
if (copy_to_user(ctrl.data, tbuf, i)) {
@ -624,7 +648,7 @@ static int proc_control(struct dev_state *ps, void __user *arg)
if (usbfs_snoop) {
dev_info(&dev->dev, "control write: data: ");
for (j = 0; j < ctrl.wLength; ++j)
printk ("%02x ", (unsigned char)(tbuf)[j]);
printk("%02x ", (unsigned char)(tbuf)[j]);
printk("\n");
}
usb_unlock_device(dev);
@ -649,7 +673,7 @@ static int proc_bulk(struct dev_state *ps, void __user *arg)
unsigned int tmo, len1, pipe;
int len2;
unsigned char *tbuf;
int i, ret;
int i, j, ret;
if (copy_from_user(&bulk, arg, sizeof(bulk)))
return -EFAULT;
@ -674,10 +698,18 @@ static int proc_bulk(struct dev_state *ps, void __user *arg)
kfree(tbuf);
return -EINVAL;
}
snoop(&dev->dev, "bulk read: len=0x%02x timeout=%04d\n",
bulk.len, bulk.timeout);
usb_unlock_device(dev);
i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
usb_lock_device(dev);
if (!i && len2) {
if (usbfs_snoop) {
dev_info(&dev->dev, "bulk read: data ");
for (j = 0; j < len2; ++j)
printk("%02x ", (unsigned char)(tbuf)[j]);
printk("\n");
}
if (copy_to_user(bulk.data, tbuf, len2)) {
kfree(tbuf);
return -EFAULT;
@ -690,6 +722,14 @@ static int proc_bulk(struct dev_state *ps, void __user *arg)
return -EFAULT;
}
}
snoop(&dev->dev, "bulk write: len=0x%02x timeout=%04d\n",
bulk.len, bulk.timeout);
if (usbfs_snoop) {
dev_info(&dev->dev, "bulk write: data: ");
for (j = 0; j < len1; ++j)
printk("%02x ", (unsigned char)(tbuf)[j]);
printk("\n");
}
usb_unlock_device(dev);
i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
usb_lock_device(dev);
@ -835,7 +875,6 @@ static int proc_setconfig(struct dev_state *ps, void __user *arg)
return status;
}
static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
struct usbdevfs_iso_packet_desc __user *iso_frame_desc,
void __user *arg)
@ -896,6 +935,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
kfree(dr);
return -EFAULT;
}
snoop(&ps->dev->dev, "control urb\n");
break;
case USBDEVFS_URB_TYPE_BULK:
@ -910,6 +950,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
return -EINVAL;
if (!access_ok((uurb->endpoint & USB_DIR_IN) ? VERIFY_WRITE : VERIFY_READ, uurb->buffer, uurb->buffer_length))
return -EFAULT;
snoop(&ps->dev->dev, "bulk urb\n");
break;
case USBDEVFS_URB_TYPE_ISO:
@ -939,6 +980,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
return -EINVAL;
}
uurb->buffer_length = totlen;
snoop(&ps->dev->dev, "iso urb\n");
break;
case USBDEVFS_URB_TYPE_INTERRUPT:
@ -954,6 +996,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
return -EINVAL;
if (!access_ok((uurb->endpoint & USB_DIR_IN) ? VERIFY_WRITE : VERIFY_READ, uurb->buffer, uurb->buffer_length))
return -EFAULT;
snoop(&ps->dev->dev, "interrupt urb\n");
break;
default:
@ -1003,6 +1046,8 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
return -EFAULT;
}
}
snoop(&as->urb->dev->dev, "submit urb\n");
snoop_urb(as->urb, as->userurb);
async_newpending(as);
if ((ret = usb_submit_urb(as->urb, GFP_KERNEL))) {
dev_printk(KERN_DEBUG, &ps->dev->dev, "usbfs: usb_submit_urb returned %d\n", ret);