diff options
Diffstat (limited to 'drivers/usb/core/devio.c')
| -rw-r--r-- | drivers/usb/core/devio.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 1a16a8bdea60..f6ce6e26e0d4 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -238,6 +238,9 @@ static int usbdev_mmap(struct file *file, struct vm_area_struct *vma) dma_addr_t dma_handle = DMA_MAPPING_ERROR; int ret; + if (!(file->f_mode & FMODE_WRITE)) + return -EPERM; + ret = usbfs_increase_memory_usage(size + sizeof(struct usb_memory)); if (ret) goto error; @@ -1295,7 +1298,7 @@ static int do_proc_bulk(struct usb_dev_state *ps, return ret; len1 = bulk->len; - if (len1 < 0 || len1 >= (INT_MAX - sizeof(struct urb))) + if (len1 >= (INT_MAX - sizeof(struct urb))) return -EINVAL; if (bulk->ep & USB_DIR_IN) @@ -2642,21 +2645,24 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, snoop(&dev->dev, "%s: CONTROL\n", __func__); ret = proc_control(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; case USBDEVFS_BULK: snoop(&dev->dev, "%s: BULK\n", __func__); ret = proc_bulk(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; case USBDEVFS_RESETEP: snoop(&dev->dev, "%s: RESETEP\n", __func__); ret = proc_resetep(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; case USBDEVFS_RESET: @@ -2668,7 +2674,8 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, snoop(&dev->dev, "%s: CLEAR_HALT\n", __func__); ret = proc_clearhalt(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; case USBDEVFS_GETDRIVER: @@ -2695,7 +2702,8 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, snoop(&dev->dev, "%s: SUBMITURB\n", __func__); ret = proc_submiturb(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; #ifdef CONFIG_COMPAT @@ -2703,14 +2711,16 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, snoop(&dev->dev, "%s: CONTROL32\n", __func__); ret = proc_control_compat(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; case USBDEVFS_BULK32: snoop(&dev->dev, "%s: BULK32\n", __func__); ret = proc_bulk_compat(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; case USBDEVFS_DISCSIGNAL32: @@ -2722,7 +2732,8 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, snoop(&dev->dev, "%s: SUBMITURB32\n", __func__); ret = proc_submiturb_compat(ps, p); if (ret >= 0) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode_set_mtime_to_ts(inode, + inode_set_ctime_current(inode)); break; case USBDEVFS_IOCTL32: @@ -2804,7 +2815,7 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, done: usb_unlock_device(dev); if (ret >= 0) - inode->i_atime = current_time(inode); + inode_set_atime_to_ts(inode, current_time(inode)); return ret; } |