diff options
Diffstat (limited to 'include/uapi/mtd')
| -rw-r--r-- | include/uapi/mtd/ubi-user.h | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/include/uapi/mtd/ubi-user.h b/include/uapi/mtd/ubi-user.h index 9c885e26cc0f..1927b0d78a99 100644 --- a/include/uapi/mtd/ubi-user.h +++ b/include/uapi/mtd/ubi-user.h @@ -138,9 +138,12 @@ * Block devices on UBI volumes * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * - * To create or remove a R/O block device on top of an UBI volume the - * %UBI_IOCVOLCRBLK and %UBI_IOCVOLRMBLK ioctl commands should be used, - * respectively. These commands take no arguments. + * To create a R/O block device on top of an UBI volume the %UBI_IOCVOLCRBLK + * should be used. A pointer to a &struct ubi_blkcreate_req object is expected + * to be passed, which is not used and reserved for future usage. + * + * Conversely, to remove a block device the %UBI_IOCVOLRMBLK should be used, + * which takes no arguments. */ /* @@ -199,7 +202,7 @@ #define UBI_IOCSETVOLPROP _IOW(UBI_VOL_IOC_MAGIC, 6, \ struct ubi_set_vol_prop_req) /* Create a R/O block device on top of an UBI volume */ -#define UBI_IOCVOLCRBLK _IO(UBI_VOL_IOC_MAGIC, 7) +#define UBI_IOCVOLCRBLK _IOW(UBI_VOL_IOC_MAGIC, 7, struct ubi_blkcreate_req) /* Remove the R/O block device */ #define UBI_IOCVOLRMBLK _IO(UBI_VOL_IOC_MAGIC, 8) @@ -431,4 +434,12 @@ struct ubi_set_vol_prop_req { __u64 value; } __packed; +/** + * struct ubi_blkcreate_req - a data structure used in block creation requests. + * @padding: reserved for future, not used, has to be zeroed + */ +struct ubi_blkcreate_req { + __s8 padding[128]; +} __packed; + #endif /* __UBI_USER_H__ */ |