#include "hcd.h" /* for usbcore internals */
#include "usb.h"
+#include "hub.h"
#define USB_MAXBUS 64
#define USB_DEVICE_MAX USB_MAXBUS * 128
void __user *disccontext;
unsigned long ifclaimed;
u32 secid;
+ u32 disabled_bulk_eps;
};
struct async {
struct urb *urb;
int status;
u32 secid;
+ u8 bulk_addr;
+ u8 bulk_status;
};
static int usbfs_snoop;
dev_info(dev , format , ## arg); \
} while (0)
-#define USB_DEVICE_DEV MKDEV(USB_DEVICE_MAJOR, 0)
+enum snoop_when {
+ SUBMIT, COMPLETE
+};
+#define USB_DEVICE_DEV MKDEV(USB_DEVICE_MAJOR, 0)
#define MAX_USBFS_BUFFER_SIZE 16384
+
static int connected(struct dev_state *ps)
{
return (!list_empty(&ps->list) &&
return NULL;
}
-static void snoop_urb(struct urb *urb, void __user *userurb)
+static void snoop_urb(struct usb_device *udev,
+ void __user *userurb, int pipe, unsigned length,
+ int timeout_or_status, enum snoop_when when)
{
- unsigned j;
- unsigned char *data = urb->transfer_buffer;
+ static const char *types[] = {"isoc", "int", "ctrl", "bulk"};
+ static const char *dirs[] = {"out", "in"};
+ int ep;
+ const char *t, *d;
if (!usbfs_snoop)
return;
- dev_info(&urb->dev->dev, "direction=%s\n",
- usb_urb_dir_in(urb) ? "IN" : "OUT");
- dev_info(&urb->dev->dev, "userurb=%p\n", userurb);
- dev_info(&urb->dev->dev, "transfer_buffer_length=%u\n",
- urb->transfer_buffer_length);
- dev_info(&urb->dev->dev, "actual_length=%u\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");
+ ep = usb_pipeendpoint(pipe);
+ t = types[usb_pipetype(pipe)];
+ d = dirs[!!usb_pipein(pipe)];
+
+ if (userurb) { /* Async */
+ if (when == SUBMIT)
+ dev_info(&udev->dev, "userurb %p, ep%d %s-%s, "
+ "length %u\n",
+ userurb, ep, t, d, length);
+ else
+ dev_info(&udev->dev, "userurb %p, ep%d %s-%s, "
+ "actual_length %u status %d\n",
+ userurb, ep, t, d, length,
+ timeout_or_status);
+ } else {
+ if (when == SUBMIT)
+ dev_info(&udev->dev, "ep%d %s-%s, length %u, "
+ "timeout %d\n",
+ ep, t, d, length, timeout_or_status);
+ else
+ dev_info(&udev->dev, "ep%d %s-%s, actual_length %u, "
+ "status %d\n",
+ ep, t, d, length, timeout_or_status);
+ }
+}
+
+#define AS_CONTINUATION 1
+#define AS_UNLINK 2
+
+static void cancel_bulk_urbs(struct dev_state *ps, unsigned bulk_addr)
+__releases(ps->lock)
+__acquires(ps->lock)
+{
+ struct async *as;
+
+ /* Mark all the pending URBs that match bulk_addr, up to but not
+ * including the first one without AS_CONTINUATION. If such an
+ * URB is encountered then a new transfer has already started so
+ * the endpoint doesn't need to be disabled; otherwise it does.
+ */
+ list_for_each_entry(as, &ps->async_pending, asynclist) {
+ if (as->bulk_addr == bulk_addr) {
+ if (as->bulk_status != AS_CONTINUATION)
+ goto rescan;
+ as->bulk_status = AS_UNLINK;
+ as->bulk_addr = 0;
+ }
+ }
+ ps->disabled_bulk_eps |= (1 << bulk_addr);
+
+ /* Now carefully unlink all the marked pending URBs */
+ rescan:
+ list_for_each_entry(as, &ps->async_pending, asynclist) {
+ if (as->bulk_status == AS_UNLINK) {
+ as->bulk_status = 0; /* Only once */
+ spin_unlock(&ps->lock); /* Allow completions */
+ usb_unlink_urb(as->urb);
+ spin_lock(&ps->lock);
+ goto rescan;
+ }
+ }
}
static void async_completed(struct urb *urb)
struct async *as = urb->context;
struct dev_state *ps = as->ps;
struct siginfo sinfo;
+ struct pid *pid = NULL;
+ uid_t uid = 0;
+ uid_t euid = 0;
+ u32 secid = 0;
+ int signr;
spin_lock(&ps->lock);
list_move_tail(&as->asynclist, &ps->async_completed);
- spin_unlock(&ps->lock);
as->status = urb->status;
- if (as->signr) {
+ signr = as->signr;
+ if (signr) {
sinfo.si_signo = as->signr;
sinfo.si_errno = as->status;
sinfo.si_code = SI_ASYNCIO;
sinfo.si_addr = as->userurb;
- kill_pid_info_as_uid(as->signr, &sinfo, as->pid, as->uid,
- as->euid, as->secid);
+ pid = as->pid;
+ uid = as->uid;
+ euid = as->euid;
+ secid = as->secid;
}
snoop(&urb->dev->dev, "urb complete\n");
- snoop_urb(urb, as->userurb);
+ snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
+ as->status, COMPLETE);
+ if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
+ as->status != -ENOENT)
+ cancel_bulk_urbs(ps, as->bulk_addr);
+ spin_unlock(&ps->lock);
+
+ if (signr)
+ kill_pid_info_as_uid(sinfo.si_signo, &sinfo, pid, uid,
+ euid, secid);
+
wake_up(&ps->wait);
}
if (!ps)
goto out;
- ret = -ENOENT;
+ ret = -ENODEV;
/* usbdev device-node */
if (imajor(inode) == USB_DEVICE_MAJOR)
struct async *as;
usb_lock_device(dev);
+ usb_hub_release_all_ports(dev, ps);
/* Protect against simultaneous open */
mutex_lock(&usbfs_mutex);
unsigned int tmo;
unsigned char *tbuf;
unsigned wLength;
- int i, j, ret;
+ int i, pipe, ret;
if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
return -EFAULT;
free_page((unsigned long)tbuf);
return -EINVAL;
}
- snoop(&dev->dev, "control read: bRequest=%02x "
- "bRrequestType=%02x wValue=%04x "
- "wIndex=%04x wLength=%04x\n",
- ctrl.bRequest, ctrl.bRequestType, ctrl.wValue,
- ctrl.wIndex, ctrl.wLength);
+ pipe = usb_rcvctrlpipe(dev, 0);
+ snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT);
usb_unlock_device(dev);
- i = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), ctrl.bRequest,
+ i = usb_control_msg(dev, pipe, ctrl.bRequest,
ctrl.bRequestType, ctrl.wValue, ctrl.wIndex,
tbuf, ctrl.wLength, tmo);
usb_lock_device(dev);
+ snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE);
+
if ((i > 0) && ctrl.wLength) {
- if (usbfs_snoop) {
- dev_info(&dev->dev, "control read: data ");
- for (j = 0; j < i; ++j)
- printk("%02x ", (u8)(tbuf)[j]);
- printk("\n");
- }
if (copy_to_user(ctrl.data, tbuf, i)) {
free_page((unsigned long)tbuf);
return -EFAULT;
return -EFAULT;
}
}
- snoop(&dev->dev, "control write: bRequest=%02x "
- "bRrequestType=%02x wValue=%04x "
- "wIndex=%04x wLength=%04x\n",
- ctrl.bRequest, ctrl.bRequestType, ctrl.wValue,
- ctrl.wIndex, ctrl.wLength);
- if (usbfs_snoop) {
- dev_info(&dev->dev, "control write: data: ");
- for (j = 0; j < ctrl.wLength; ++j)
- printk("%02x ", (unsigned char)(tbuf)[j]);
- printk("\n");
- }
+ pipe = usb_sndctrlpipe(dev, 0);
+ snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT);
+
usb_unlock_device(dev);
i = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ctrl.bRequest,
ctrl.bRequestType, ctrl.wValue, ctrl.wIndex,
tbuf, ctrl.wLength, tmo);
usb_lock_device(dev);
+ snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE);
}
free_page((unsigned long)tbuf);
if (i < 0 && i != -EPIPE) {
unsigned int tmo, len1, pipe;
int len2;
unsigned char *tbuf;
- int i, j, ret;
+ int i, ret;
if (copy_from_user(&bulk, arg, sizeof(bulk)))
return -EFAULT;
kfree(tbuf);
return -EINVAL;
}
- snoop(&dev->dev, "bulk read: len=0x%02x timeout=%04d\n",
- bulk.len, bulk.timeout);
+ snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT);
+
usb_unlock_device(dev);
i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
usb_lock_device(dev);
+ snoop_urb(dev, NULL, pipe, len2, i, COMPLETE);
+
if (!i && len2) {
- if (usbfs_snoop) {
- dev_info(&dev->dev, "bulk read: data ");
- for (j = 0; j < len2; ++j)
- printk("%02x ", (u8)(tbuf)[j]);
- printk("\n");
- }
if (copy_to_user(bulk.data, tbuf, len2)) {
kfree(tbuf);
return -EFAULT;
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");
- }
+ snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT);
+
usb_unlock_device(dev);
i = usb_bulk_msg(dev, pipe, tbuf, len1, &len2, tmo);
usb_lock_device(dev);
+ snoop_urb(dev, NULL, pipe, len2, i, COMPLETE);
}
kfree(tbuf);
if (i < 0)
if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP |
USBDEVFS_URB_SHORT_NOT_OK |
+ USBDEVFS_URB_BULK_CONTINUATION |
USBDEVFS_URB_NO_FSBR |
USBDEVFS_URB_ZERO_PACKET |
USBDEVFS_URB_NO_INTERRUPT))
return -EINVAL;
- if (!uurb->buffer)
+ if (uurb->buffer_length > 0 && !uurb->buffer)
return -EINVAL;
if (!(uurb->type == USBDEVFS_URB_TYPE_CONTROL &&
(uurb->endpoint & ~USB_ENDPOINT_DIR_MASK) == 0)) {
is_in = 0;
uurb->endpoint &= ~USB_DIR_IN;
}
- if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
- uurb->buffer, uurb->buffer_length)) {
- kfree(dr);
- return -EFAULT;
- }
- snoop(&ps->dev->dev, "control urb: bRequest=%02x "
- "bRrequestType=%02x wValue=%04x "
- "wIndex=%04x wLength=%04x\n",
- dr->bRequest, dr->bRequestType,
- __le16_to_cpup(&dr->wValue),
- __le16_to_cpup(&dr->wIndex),
- __le16_to_cpup(&dr->wLength));
break;
case USBDEVFS_URB_TYPE_BULK:
uurb->number_of_packets = 0;
if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
return -EINVAL;
- if (!access_ok(is_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:
}
totlen += isopkt[u].length;
}
- if (totlen > 32768) {
+ /* 3072 * 64 microframes */
+ if (totlen > 196608) {
kfree(isopkt);
return -EINVAL;
}
uurb->buffer_length = totlen;
- snoop(&ps->dev->dev, "iso urb\n");
break;
case USBDEVFS_URB_TYPE_INTERRUPT:
return -EINVAL;
if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
return -EINVAL;
- if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
- uurb->buffer, uurb->buffer_length))
- return -EFAULT;
- snoop(&ps->dev->dev, "interrupt urb\n");
break;
default:
return -EINVAL;
}
- as = alloc_async(uurb->number_of_packets);
- if (!as) {
+ if (uurb->buffer_length > 0 &&
+ !access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
+ uurb->buffer, uurb->buffer_length)) {
kfree(isopkt);
kfree(dr);
- return -ENOMEM;
+ return -EFAULT;
}
- as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL);
- if (!as->urb->transfer_buffer) {
+ as = alloc_async(uurb->number_of_packets);
+ if (!as) {
kfree(isopkt);
kfree(dr);
- free_async(as);
return -ENOMEM;
}
+ if (uurb->buffer_length > 0) {
+ as->urb->transfer_buffer = kmalloc(uurb->buffer_length,
+ GFP_KERNEL);
+ if (!as->urb->transfer_buffer) {
+ kfree(isopkt);
+ kfree(dr);
+ free_async(as);
+ return -ENOMEM;
+ }
+ }
as->urb->dev = ps->dev;
as->urb->pipe = (uurb->type << 30) |
__create_pipe(ps->dev, uurb->endpoint & 0xf) |
kfree(isopkt);
as->ps = ps;
as->userurb = arg;
- if (uurb->endpoint & USB_DIR_IN)
+ if (is_in && uurb->buffer_length > 0)
as->userbuffer = uurb->buffer;
else
as->userbuffer = NULL;
as->uid = cred->uid;
as->euid = cred->euid;
security_task_getsecid(current, &as->secid);
- if (!is_in) {
+ if (!is_in && uurb->buffer_length > 0) {
if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
- as->urb->transfer_buffer_length)) {
+ uurb->buffer_length)) {
free_async(as);
return -EFAULT;
}
}
- snoop_urb(as->urb, as->userurb);
+ snoop_urb(ps->dev, as->userurb, as->urb->pipe,
+ as->urb->transfer_buffer_length, 0, SUBMIT);
async_newpending(as);
- if ((ret = usb_submit_urb(as->urb, GFP_KERNEL))) {
+
+ if (usb_endpoint_xfer_bulk(&ep->desc)) {
+ spin_lock_irq(&ps->lock);
+
+ /* Not exactly the endpoint address; the direction bit is
+ * shifted to the 0x10 position so that the value will be
+ * between 0 and 31.
+ */
+ as->bulk_addr = usb_endpoint_num(&ep->desc) |
+ ((ep->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ >> 3);
+
+ /* If this bulk URB is the start of a new transfer, re-enable
+ * the endpoint. Otherwise mark it as a continuation URB.
+ */
+ if (uurb->flags & USBDEVFS_URB_BULK_CONTINUATION)
+ as->bulk_status = AS_CONTINUATION;
+ else
+ ps->disabled_bulk_eps &= ~(1 << as->bulk_addr);
+
+ /* Don't accept continuation URBs if the endpoint is
+ * disabled because of an earlier error.
+ */
+ if (ps->disabled_bulk_eps & (1 << as->bulk_addr))
+ ret = -EREMOTEIO;
+ else
+ ret = usb_submit_urb(as->urb, GFP_ATOMIC);
+ spin_unlock_irq(&ps->lock);
+ } else {
+ ret = usb_submit_urb(as->urb, GFP_KERNEL);
+ }
+
+ if (ret) {
dev_printk(KERN_DEBUG, &ps->dev->dev,
"usbfs: usb_submit_urb returned %d\n", ret);
+ snoop_urb(ps->dev, as->userurb, as->urb->pipe,
+ 0, ret, COMPLETE);
async_removepending(as);
free_async(as);
return ret;
if (as->userbuffer)
if (copy_to_user(as->userbuffer, urb->transfer_buffer,
urb->transfer_buffer_length))
- return -EFAULT;
+ goto err_out;
if (put_user(as->status, &userurb->status))
- return -EFAULT;
+ goto err_out;
if (put_user(urb->actual_length, &userurb->actual_length))
- return -EFAULT;
+ goto err_out;
if (put_user(urb->error_count, &userurb->error_count))
- return -EFAULT;
+ goto err_out;
if (usb_endpoint_xfer_isoc(&urb->ep->desc)) {
for (i = 0; i < urb->number_of_packets; i++) {
if (put_user(urb->iso_frame_desc[i].actual_length,
&userurb->iso_frame_desc[i].actual_length))
- return -EFAULT;
+ goto err_out;
if (put_user(urb->iso_frame_desc[i].status,
&userurb->iso_frame_desc[i].status))
- return -EFAULT;
+ goto err_out;
}
}
if (put_user(addr, (void __user * __user *)arg))
return -EFAULT;
return 0;
+
+err_out:
+ free_async(as);
+ return -EFAULT;
}
static struct async *reap_as(struct dev_state *ps)
struct usbdevfs_urb32 __user *uurb)
{
__u32 uptr;
- if (get_user(kurb->type, &uurb->type) ||
+ if (!access_ok(VERIFY_READ, uurb, sizeof(*uurb)) ||
+ __get_user(kurb->type, &uurb->type) ||
__get_user(kurb->endpoint, &uurb->endpoint) ||
__get_user(kurb->status, &uurb->status) ||
__get_user(kurb->flags, &uurb->flags) ||
u32 udata;
uioc = compat_ptr((long)arg);
- if (get_user(ctrl.ifno, &uioc->ifno) ||
- get_user(ctrl.ioctl_code, &uioc->ioctl_code) ||
+ if (!access_ok(VERIFY_READ, uioc, sizeof(*uioc)) ||
+ __get_user(ctrl.ifno, &uioc->ifno) ||
+ __get_user(ctrl.ioctl_code, &uioc->ioctl_code) ||
__get_user(udata, &uioc->data))
return -EFAULT;
ctrl.data = compat_ptr(udata);
}
#endif
+static int proc_claim_port(struct dev_state *ps, void __user *arg)
+{
+ unsigned portnum;
+ int rc;
+
+ if (get_user(portnum, (unsigned __user *) arg))
+ return -EFAULT;
+ rc = usb_hub_claim_port(ps->dev, portnum, ps);
+ if (rc == 0)
+ snoop(&ps->dev->dev, "port %d claimed by process %d: %s\n",
+ portnum, task_pid_nr(current), current->comm);
+ return rc;
+}
+
+static int proc_release_port(struct dev_state *ps, void __user *arg)
+{
+ unsigned portnum;
+
+ if (get_user(portnum, (unsigned __user *) arg))
+ return -EFAULT;
+ return usb_hub_release_port(ps->dev, portnum, ps);
+}
+
/*
* NOTE: All requests here that have interface numbers as parameters
* are assuming that somehow the configuration has been prevented from
break;
case USBDEVFS_REAPURBNDELAY32:
- snoop(&dev->dev, "%s: REAPURBDELAY32\n", __func__);
+ snoop(&dev->dev, "%s: REAPURBNDELAY32\n", __func__);
ret = proc_reapurbnonblock_compat(ps, p);
break;
break;
case USBDEVFS_REAPURBNDELAY:
- snoop(&dev->dev, "%s: REAPURBDELAY\n", __func__);
+ snoop(&dev->dev, "%s: REAPURBNDELAY\n", __func__);
ret = proc_reapurbnonblock(ps, p);
break;
snoop(&dev->dev, "%s: IOCTL\n", __func__);
ret = proc_ioctl_default(ps, p);
break;
+
+ case USBDEVFS_CLAIM_PORT:
+ snoop(&dev->dev, "%s: CLAIM_PORT\n", __func__);
+ ret = proc_claim_port(ps, p);
+ break;
+
+ case USBDEVFS_RELEASE_PORT:
+ snoop(&dev->dev, "%s: RELEASE_PORT\n", __func__);
+ ret = proc_release_port(ps, p);
+ break;
}
usb_unlock_device(dev);
if (ret >= 0)
git.openpandora.org / pandora-kernel.git / blobdiff