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Commit 141e6ebd authored by Corentin Chary's avatar Corentin Chary Committed by Artem Bityutskiy
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UBI: add ioctl for map operation 



This patch adds ioctl for the LEB map 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: default avatarCorentin Chary <corentincj@iksaif.net>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
parent 1de9e8e7

drivers/mtd/ubi/cdev.c

+14 −0
Original line number Diff line number Diff line
@@ -518,6 +518,20 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, 
		err = ubi_wl_flush(ubi);

		break;

	}



	/* Logical eraseblock map command */

	case UBI_IOCEBMAP:

	{

		struct ubi_map_req req;



		err = copy_from_user(&req, argp, sizeof(struct ubi_map_req));

		if (err) {

			err = -EFAULT;

			break;

		}

		err = ubi_leb_map(desc, req.lnum, req.dtype);

		break;

	}

#endif



	default:

include/mtd/ubi-user.h

+15 −0
Original line number Diff line number Diff line
@@ -133,6 +133,9 @@ 
#define UBI_IOCEBER _IOW(UBI_VOL_IOC_MAGIC, 1, int32_t)

/* An atomic eraseblock change command */

#define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t)

/* Map an eraseblock, used for debugging, disabled by default */

#define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req)





/* Maximum MTD device name length supported by UBI */

#define MAX_UBI_MTD_NAME_LEN 127
@@ -319,4 +322,16 @@ struct ubi_leb_change_req { 
	int8_t  padding[7];

} __attribute__ ((packed));



/**

 * struct ubi_map_req - a data structure used in map eraseblock requests.

 * @lnum: logical eraseblock number to unmap

 * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN)

 * @padding: reserved for future, not used, has to be zeroed

 */

struct ubi_map_req {

	int32_t lnum;

	int8_t  dtype;

	int8_t  padding[3];

} __attribute__ ((packed));



#endif /* __UBI_USER_H__ */