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authorChristoph Hellwig <hch@lst.de>2007-05-17 16:32:10 +0200
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-07-18 15:53:36 +0200
commitbf07803a6827ef8d4c9d840a1de800ba36db0213 (patch)
tree35634c88d81dbacc2b12db25755845370d6f7e59 /drivers/mtd/ubi/cdev.c
parentUBI: error path bugfix (diff)
downloadlinux-bf07803a6827ef8d4c9d840a1de800ba36db0213.tar.xz
linux-bf07803a6827ef8d4c9d840a1de800ba36db0213.zip
UBI: cleanup ioctl handling
- don't do access_ok + get/put user but use the proper macro - remove useless checks Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/cdev.c')
-rw-r--r--drivers/mtd/ubi/cdev.c33
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;