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UBI: add ioctl for unmap operation

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This patch adds ioctl for the LEB unmap operation (as a debugging
option so far).

[Re-named ioctl to make it look the same as the other one and made
 some minor stylistic changes. Artem Bityutskiy.]

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Corentin Chary 2009-01-05 14:46:19 +01:00 committed by Artem Bityutskiy
parent 141e6ebd1b
commit c3da23be16
2 changed files with 16 additions and 2 deletions
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15
drivers/mtd/ubi/cdev.c
View file

@ -532,13 +532,26 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file,
err = ubi_leb_map(desc, req.lnum, req.dtype); err = ubi_leb_map(desc, req.lnum, req.dtype);
break; break;
} }
/* Logical eraseblock un-map command */
case UBI_IOCEBUNMAP:
{
int32_t lnum;
err = get_user(lnum, (__user int32_t *)argp);
if (err) {
err = -EFAULT;
break;
}
err = ubi_leb_unmap(desc, lnum);
break;
}
#endif #endif
default: default:
err = -ENOTTY; err = -ENOTTY;
break; break;
} }
return err; return err;
} }

3
include/mtd/ubi-user.h
View file

@ -135,7 +135,8 @@
#define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t) #define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t)
/* Map an eraseblock, used for debugging, disabled by default */ /* Map an eraseblock, used for debugging, disabled by default */
#define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req) #define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req)
/* Unmap an eraseblock, used for debugging, disabled by default */
#define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t)
/* Maximum MTD device name length supported by UBI */ /* Maximum MTD device name length supported by UBI */
#define MAX_UBI_MTD_NAME_LEN 127 #define MAX_UBI_MTD_NAME_LEN 127