diff options
| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2007-12-16 16:59:31 +0200 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2007-12-26 19:15:17 +0200 |
| commit | 9f961b57568960a150cc9781c52824c9093a0514 (patch) | |
| tree | 345d60347d63bdc9973a2447d84024776b73dd2f /drivers/mtd/ubi/cdev.c | |
| parent | 16f557ecbf96dd13d13788a6f62d4d97ae73b1f9 (diff) | |
UBI: add UBI control device
This patch is a preparation to make UBI devices dynamic. It
adds an UBI control device which has dynamically allocated
major number and registers itself as "ubi_ctrl". It does not
do anything so far. The idea is that this device will allow
to attach/detach MTD devices from userspace.
This is symilar to what the Linux device mapper has.
The next things to do are:
* Fix UBI, because it now assumes UBI devices cannot go away
* Implement control device ioctls which will attach/detach MTD
devices
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/cdev.c')
| -rw-r--r-- | drivers/mtd/ubi/cdev.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index 22c15a388f2..bc900d24cdb 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -28,6 +28,11 @@ * * Major and minor numbers are assigned dynamically to both UBI and volume * character devices. + * + * Well, there is the third kind of character devices - the UBI control + * character device, which allows to manipulate by UBI devices - create and + * delete them. In other words, it is used for attaching and detaching MTD + * devices. */ #include <linux/module.h> @@ -693,6 +698,11 @@ static int ubi_cdev_ioctl(struct inode *inode, struct file *file, return err; } +/* UBI control character device operations */ +struct file_operations ubi_ctrl_cdev_operations = { + .owner = THIS_MODULE, +}; + /* UBI character device operations */ struct file_operations ubi_cdev_operations = { .owner = THIS_MODULE, |