usbdevfs: move compat_ioctl handling to devio.c
Half the compat_ioctl handling is in devio.c, the other half is in fs/compat_ioctl.c. This moves everything into one place for consistency. As a positive side-effect, push down the BKL into the ioctl methods. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Oliver Neukum <oliver@neukum.org> Cc: Alon Bar-Lev <alon.barlev@gmail.com> Cc: David Vrabel <david.vrabel@csr.com> Cc: linux-usb@vger.kernel.org
This commit is contained in:
Arnd Bergmann
Родитель
3695669cd4
Коммит
637e8a60a7
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@ -1388,6 +1388,46 @@ static int proc_reapurbnonblock(struct dev_state *ps, void __user *arg)
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}
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#ifdef CONFIG_COMPAT
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static int proc_control_compat(struct dev_state *ps,
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struct usbdevfs_ctrltransfer32 __user *p32)
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{
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struct usbdevfs_ctrltransfer __user *p;
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__u32 udata;
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p = compat_alloc_user_space(sizeof(*p));
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if (copy_in_user(p, p32, (sizeof(*p32) - sizeof(compat_caddr_t))) ||
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get_user(udata, &p32->data) ||
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put_user(compat_ptr(udata), &p->data))
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return -EFAULT;
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return proc_control(ps, p);
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}
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static int proc_bulk_compat(struct dev_state *ps,
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struct usbdevfs_bulktransfer32 __user *p32)
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{
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struct usbdevfs_bulktransfer __user *p;
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compat_uint_t n;
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compat_caddr_t addr;
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p = compat_alloc_user_space(sizeof(*p));
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if (get_user(n, &p32->ep) || put_user(n, &p->ep) ||
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get_user(n, &p32->len) || put_user(n, &p->len) ||
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get_user(n, &p32->timeout) || put_user(n, &p->timeout) ||
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get_user(addr, &p32->data) || put_user(compat_ptr(addr), &p->data))
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return -EFAULT;
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return proc_bulk(ps, p);
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}
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static int proc_disconnectsignal_compat(struct dev_state *ps, void __user *arg)
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{
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struct usbdevfs_disconnectsignal32 ds;
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if (copy_from_user(&ds, arg, sizeof(ds)))
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return -EFAULT;
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ps->discsignr = ds.signr;
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ps->disccontext = compat_ptr(ds.context);
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return 0;
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}
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static int get_urb32(struct usbdevfs_urb *kurb,
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struct usbdevfs_urb32 __user *uurb)
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@ -1482,6 +1522,7 @@ static int proc_reapurbnonblock_compat(struct dev_state *ps, void __user *arg)
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return processcompl_compat(as, (void __user * __user *)arg);
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}
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#endif
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static int proc_disconnectsignal(struct dev_state *ps, void __user *arg)
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@ -1648,12 +1689,12 @@ static int proc_release_port(struct dev_state *ps, void __user *arg)
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* are assuming that somehow the configuration has been prevented from
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* changing. But there's no mechanism to ensure that...
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*/
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static int usbdev_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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static long usbdev_do_ioctl(struct file *file, unsigned int cmd,
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void __user *p)
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{
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struct dev_state *ps = file->private_data;
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struct inode *inode = file->f_path.dentry->d_inode;
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struct usb_device *dev = ps->dev;
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void __user *p = (void __user *)arg;
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int ret = -ENOTTY;
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if (!(file->f_mode & FMODE_WRITE))
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@ -1726,6 +1767,24 @@ static int usbdev_ioctl(struct inode *inode, struct file *file,
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break;
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#ifdef CONFIG_COMPAT
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case USBDEVFS_CONTROL32:
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snoop(&dev->dev, "%s: CONTROL32\n", __func__);
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ret = proc_control_compat(ps, p);
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if (ret >= 0)
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inode->i_mtime = CURRENT_TIME;
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break;
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case USBDEVFS_BULK32:
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snoop(&dev->dev, "%s: BULK32\n", __func__);
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ret = proc_bulk_compat(ps, p);
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if (ret >= 0)
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inode->i_mtime = CURRENT_TIME;
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break;
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case USBDEVFS_DISCSIGNAL32:
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snoop(&dev->dev, "%s: DISCSIGNAL32\n", __func__);
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ret = proc_disconnectsignal_compat(ps, p);
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break;
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case USBDEVFS_SUBMITURB32:
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snoop(&dev->dev, "%s: SUBMITURB32\n", __func__);
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@ -1745,7 +1804,7 @@ static int usbdev_ioctl(struct inode *inode, struct file *file,
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break;
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case USBDEVFS_IOCTL32:
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snoop(&dev->dev, "%s: IOCTL\n", __func__);
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snoop(&dev->dev, "%s: IOCTL32\n", __func__);
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ret = proc_ioctl_compat(ps, ptr_to_compat(p));
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break;
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#endif
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@ -1801,6 +1860,32 @@ static int usbdev_ioctl(struct inode *inode, struct file *file,
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return ret;
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}
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static long usbdev_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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int ret;
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lock_kernel();
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ret = usbdev_do_ioctl(file, cmd, (void __user *)arg);
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unlock_kernel();
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return ret;
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}
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#ifdef CONFIG_COMPAT
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static long usbdev_compat_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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int ret;
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lock_kernel();
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ret = usbdev_do_ioctl(file, cmd, compat_ptr(arg));
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unlock_kernel();
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return ret;
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}
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#endif
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/* No kernel lock - fine */
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static unsigned int usbdev_poll(struct file *file,
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struct poll_table_struct *wait)
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@ -1817,13 +1902,16 @@ static unsigned int usbdev_poll(struct file *file,
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}
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const struct file_operations usbdev_file_operations = {
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.owner = THIS_MODULE,
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.llseek = usbdev_lseek,
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.read = usbdev_read,
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.poll = usbdev_poll,
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.ioctl = usbdev_ioctl,
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.open = usbdev_open,
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.release = usbdev_release,
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.owner = THIS_MODULE,
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.llseek = usbdev_lseek,
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.read = usbdev_read,
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.poll = usbdev_poll,
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.unlocked_ioctl = usbdev_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = usbdev_compat_ioctl,
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#endif
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.open = usbdev_open,
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.release = usbdev_release,
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};
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static void usbdev_remove(struct usb_device *udev)
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@ -742,94 +742,6 @@ static int serial_struct_ioctl(unsigned fd, unsigned cmd,
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return err;
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}
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struct usbdevfs_ctrltransfer32 {
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u8 bRequestType;
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u8 bRequest;
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u16 wValue;
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u16 wIndex;
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u16 wLength;
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u32 timeout; /* in milliseconds */
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compat_caddr_t data;
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};
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#define USBDEVFS_CONTROL32 _IOWR('U', 0, struct usbdevfs_ctrltransfer32)
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static int do_usbdevfs_control(unsigned int fd, unsigned int cmd,
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struct usbdevfs_ctrltransfer32 __user *p32)
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{
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struct usbdevfs_ctrltransfer __user *p;
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__u32 udata;
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p = compat_alloc_user_space(sizeof(*p));
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if (copy_in_user(p, p32, (sizeof(*p32) - sizeof(compat_caddr_t))) ||
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get_user(udata, &p32->data) ||
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put_user(compat_ptr(udata), &p->data))
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return -EFAULT;
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return sys_ioctl(fd, USBDEVFS_CONTROL, (unsigned long)p);
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}
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struct usbdevfs_bulktransfer32 {
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compat_uint_t ep;
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compat_uint_t len;
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compat_uint_t timeout; /* in milliseconds */
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compat_caddr_t data;
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};
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#define USBDEVFS_BULK32 _IOWR('U', 2, struct usbdevfs_bulktransfer32)
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static int do_usbdevfs_bulk(unsigned int fd, unsigned int cmd,
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struct usbdevfs_bulktransfer32 __user *p32)
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{
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struct usbdevfs_bulktransfer __user *p;
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compat_uint_t n;
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compat_caddr_t addr;
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p = compat_alloc_user_space(sizeof(*p));
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if (get_user(n, &p32->ep) || put_user(n, &p->ep) ||
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get_user(n, &p32->len) || put_user(n, &p->len) ||
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get_user(n, &p32->timeout) || put_user(n, &p->timeout) ||
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get_user(addr, &p32->data) || put_user(compat_ptr(addr), &p->data))
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return -EFAULT;
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return sys_ioctl(fd, USBDEVFS_BULK, (unsigned long)p);
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}
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/*
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* USBDEVFS_SUBMITURB, USBDEVFS_REAPURB and USBDEVFS_REAPURBNDELAY
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* are handled in usbdevfs core. -Christopher Li
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*/
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struct usbdevfs_disconnectsignal32 {
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compat_int_t signr;
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compat_caddr_t context;
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};
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#define USBDEVFS_DISCSIGNAL32 _IOR('U', 14, struct usbdevfs_disconnectsignal32)
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static int do_usbdevfs_discsignal(unsigned int fd, unsigned int cmd,
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struct usbdevfs_disconnectsignal32 __user *udis)
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{
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struct usbdevfs_disconnectsignal kdis;
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mm_segment_t old_fs;
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u32 uctx;
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int err;
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if (get_user(kdis.signr, &udis->signr) ||
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__get_user(uctx, &udis->context))
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return -EFAULT;
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kdis.context = compat_ptr(uctx);
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old_fs = get_fs();
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set_fs(KERNEL_DS);
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err = sys_ioctl(fd, USBDEVFS_DISCSIGNAL, (unsigned long) &kdis);
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set_fs(old_fs);
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return err;
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}
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/*
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* I2C layer ioctls
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*/
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@ -1471,21 +1383,6 @@ COMPATIBLE_IOCTL(PCIIOC_CONTROLLER)
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COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_IO)
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COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_MEM)
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COMPATIBLE_IOCTL(PCIIOC_WRITE_COMBINE)
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/* USB */
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COMPATIBLE_IOCTL(USBDEVFS_RESETEP)
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COMPATIBLE_IOCTL(USBDEVFS_SETINTERFACE)
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COMPATIBLE_IOCTL(USBDEVFS_SETCONFIGURATION)
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COMPATIBLE_IOCTL(USBDEVFS_GETDRIVER)
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COMPATIBLE_IOCTL(USBDEVFS_DISCARDURB)
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COMPATIBLE_IOCTL(USBDEVFS_CLAIMINTERFACE)
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COMPATIBLE_IOCTL(USBDEVFS_RELEASEINTERFACE)
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COMPATIBLE_IOCTL(USBDEVFS_CONNECTINFO)
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COMPATIBLE_IOCTL(USBDEVFS_HUB_PORTINFO)
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COMPATIBLE_IOCTL(USBDEVFS_RESET)
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COMPATIBLE_IOCTL(USBDEVFS_SUBMITURB32)
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COMPATIBLE_IOCTL(USBDEVFS_REAPURB32)
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COMPATIBLE_IOCTL(USBDEVFS_REAPURBNDELAY32)
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COMPATIBLE_IOCTL(USBDEVFS_CLEAR_HALT)
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/* NBD */
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COMPATIBLE_IOCTL(NBD_DO_IT)
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COMPATIBLE_IOCTL(NBD_CLEAR_SOCK)
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@ -1604,8 +1501,6 @@ COMPATIBLE_IOCTL(TIOCSLTC)
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COMPATIBLE_IOCTL(TIOCSTART)
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COMPATIBLE_IOCTL(TIOCSTOP)
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#endif
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/* Usbdevfs */
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COMPATIBLE_IOCTL(USBDEVFS_IOCTL32)
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/* fat 'r' ioctls. These are handled by fat with ->compat_ioctl,
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but we don't want warnings on other file systems. So declare
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@ -1677,13 +1572,6 @@ static long do_ioctl_trans(int fd, unsigned int cmd,
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case TIOCGSERIAL:
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case TIOCSSERIAL:
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return serial_struct_ioctl(fd, cmd, argp);
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/* Usbdevfs */
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case USBDEVFS_CONTROL32:
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return do_usbdevfs_control(fd, cmd, argp);
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case USBDEVFS_BULK32:
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return do_usbdevfs_bulk(fd, cmd, argp);
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case USBDEVFS_DISCSIGNAL32:
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return do_usbdevfs_discsignal(fd, cmd, argp);
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/* i2c */
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case I2C_FUNCS:
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return w_long(fd, cmd, argp);
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@ -128,6 +128,29 @@ struct usbdevfs_hub_portinfo {
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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#include <linux/compat.h>
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struct usbdevfs_ctrltransfer32 {
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u8 bRequestType;
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u8 bRequest;
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u16 wValue;
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u16 wIndex;
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u16 wLength;
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u32 timeout; /* in milliseconds */
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compat_caddr_t data;
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};
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struct usbdevfs_bulktransfer32 {
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compat_uint_t ep;
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compat_uint_t len;
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compat_uint_t timeout; /* in milliseconds */
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compat_caddr_t data;
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};
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struct usbdevfs_disconnectsignal32 {
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compat_int_t signr;
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compat_caddr_t context;
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};
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struct usbdevfs_urb32 {
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unsigned char type;
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unsigned char endpoint;
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@ -153,7 +176,9 @@ struct usbdevfs_ioctl32 {
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#endif /* __KERNEL__ */
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#define USBDEVFS_CONTROL _IOWR('U', 0, struct usbdevfs_ctrltransfer)
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#define USBDEVFS_CONTROL32 _IOWR('U', 0, struct usbdevfs_ctrltransfer32)
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#define USBDEVFS_BULK _IOWR('U', 2, struct usbdevfs_bulktransfer)
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#define USBDEVFS_BULK32 _IOWR('U', 2, struct usbdevfs_bulktransfer32)
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#define USBDEVFS_RESETEP _IOR('U', 3, unsigned int)
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#define USBDEVFS_SETINTERFACE _IOR('U', 4, struct usbdevfs_setinterface)
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#define USBDEVFS_SETCONFIGURATION _IOR('U', 5, unsigned int)
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@ -166,6 +191,7 @@ struct usbdevfs_ioctl32 {
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#define USBDEVFS_REAPURBNDELAY _IOW('U', 13, void *)
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#define USBDEVFS_REAPURBNDELAY32 _IOW('U', 13, __u32)
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#define USBDEVFS_DISCSIGNAL _IOR('U', 14, struct usbdevfs_disconnectsignal)
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#define USBDEVFS_DISCSIGNAL32 _IOR('U', 14, struct usbdevfs_disconnectsignal32)
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#define USBDEVFS_CLAIMINTERFACE _IOR('U', 15, unsigned int)
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#define USBDEVFS_RELEASEINTERFACE _IOR('U', 16, unsigned int)
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#define USBDEVFS_CONNECTINFO _IOW('U', 17, struct usbdevfs_connectinfo)
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