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Commit a27ce8f5 authored by Corentin Chary's avatar Corentin Chary Committed by Artem Bityutskiy
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UBI: add ioctl for is_mapped operation 



This patch adds ioctl to check if an LEB is mapped or not (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 c3da23be

drivers/mtd/ubi/cdev.c

+14 −0
Original line number Diff line number Diff line
@@ -546,6 +546,20 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, 
		err = ubi_leb_unmap(desc, lnum);

		break;

	}



	/* Check if logical eraseblock is mapped command */

	case UBI_IOCEBISMAP:

	{

		int32_t lnum;



		err = get_user(lnum, (__user int32_t *)argp);

		if (err) {

			err = -EFAULT;

			break;

		}

		err = ubi_is_mapped(desc, lnum);

		break;

	}

#endif



	default:

include/mtd/ubi-user.h

+2 −0
Original line number Diff line number Diff line
@@ -137,6 +137,8 @@ 
#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)

/* Check if an eraseblock is mapped, used for debugging, disabled by default */

#define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, int32_t)



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

#define MAX_UBI_MTD_NAME_LEN 127