diff options
Diffstat (limited to 'drivers/mtd/ubi/cdev.c')
| -rw-r--r-- | drivers/mtd/ubi/cdev.c | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index 5fc9fd457e69..fb238d7ade35 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -414,19 +414,7 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, struct ubi_device *ubi = vol->ubi; void __user *argp = (void __user *)arg; - if (_IOC_NR(cmd) > VOL_CDEV_IOC_MAX_SEQ || - _IOC_TYPE(cmd) != UBI_VOL_IOC_MAGIC) - return -ENOTTY; - - if (_IOC_DIR(cmd) && _IOC_READ) - err = !access_ok(VERIFY_WRITE, argp, _IOC_SIZE(cmd)); - else if (_IOC_DIR(cmd) && _IOC_WRITE) - err = !access_ok(VERIFY_READ, argp, _IOC_SIZE(cmd)); - if (err) - return -EFAULT; - switch (cmd) { - /* Volume update command */ case UBI_IOCVOLUP: { @@ -472,7 +460,7 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, { int32_t lnum; - err = __get_user(lnum, (__user int32_t *)argp); + err = get_user(lnum, (__user int32_t *)argp); if (err) { err = -EFAULT; break; @@ -588,17 +576,6 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, struct ubi_volume_desc *desc; void __user *argp = (void __user *)arg; - if (_IOC_NR(cmd) > UBI_CDEV_IOC_MAX_SEQ || - _IOC_TYPE(cmd) != UBI_IOC_MAGIC) - return -ENOTTY; - - if (_IOC_DIR(cmd) && _IOC_READ) - err = !access_ok(VERIFY_WRITE, argp, _IOC_SIZE(cmd)); - else if (_IOC_DIR(cmd) && _IOC_WRITE) - err = !access_ok(VERIFY_READ, argp, _IOC_SIZE(cmd)); - if (err) - return -EFAULT; - if (!capable(CAP_SYS_RESOURCE)) return -EPERM; @@ -613,7 +590,7 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, struct ubi_mkvol_req req; dbg_msg("create volume"); - err = __copy_from_user(&req, argp, + err = copy_from_user(&req, argp, sizeof(struct ubi_mkvol_req)); if (err) { err = -EFAULT; @@ -630,7 +607,7 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, if (err) break; - err = __put_user(req.vol_id, (__user int32_t *)argp); + err = put_user(req.vol_id, (__user int32_t *)argp); if (err) err = -EFAULT; @@ -643,7 +620,7 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, int vol_id; dbg_msg("remove volume"); - err = __get_user(vol_id, (__user int32_t *)argp); + err = get_user(vol_id, (__user int32_t *)argp); if (err) { err = -EFAULT; break; @@ -670,7 +647,7 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, struct ubi_rsvol_req req; dbg_msg("re-size volume"); - err = __copy_from_user(&req, argp, + err = copy_from_user(&req, argp, sizeof(struct ubi_rsvol_req)); if (err) { err = -EFAULT; |