From patchwork Tue Jan 6 17:20:30 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [1/3] UBI: map operation via ioctl Date: Tue, 06 Jan 2009 07:20:30 -0000 From: Corentin Chary X-Patchwork-Id: 16824 Message-Id: <200901061820.30465.corentincj@iksaif.net> To: dedekind@infradead.org Cc: linux-mtd@lists.infradead.org >From bafefa6ed036173c65b7f51c6a4a4ce5004ad09f Mon Sep 17 00:00:00 2001 From: Corentin Chary Date: Mon, 5 Jan 2009 14:44:11 +0100 Subject: [PATCH 1/3] UBI: map operation via ioctl UBI: map operation via ioctl Signed-off-by: Corentin Chary --- drivers/mtd/ubi/cdev.c | 13 +++++++++++++ include/mtd/ubi-user.h | 16 ++++++++++++++++ 2 files changed, 29 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c index 98cf31e..db47121 100644 --- a/drivers/mtd/ubi/cdev.c +++ b/drivers/mtd/ubi/cdev.c @@ -518,6 +518,19 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, err = ubi_wl_flush(ubi); break; } + case UBI_IOMAP: + { + 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: diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index ccdc562..8222f12 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -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 */ +#define UBI_IOMAP _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 +322,17 @@ 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 change + * @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__ */