[Ocfs2-tools-devel] [PATCH 1/6] O2info: Add all structures and commands OCFS2_IOC_INFO needed into ocfs2_ioctl.h

[Sunil Mushran]

sob

Tristan Ye wrote:
> Signed-off-by: Tristan Ye <tristan.ye at oracle.com>
> ---
>  include/ocfs2-kernel/ocfs2_ioctl.h |   81 ++++++++++++++++++++++++++++++++++++
>  1 files changed, 81 insertions(+), 0 deletions(-)
>
> diff --git a/include/ocfs2-kernel/ocfs2_ioctl.h b/include/ocfs2-kernel/ocfs2_ioctl.h
> index 2d3420a..ee417e9 100644
> --- a/include/ocfs2-kernel/ocfs2_ioctl.h
> +++ b/include/ocfs2-kernel/ocfs2_ioctl.h
> @@ -76,4 +76,85 @@ struct reflink_arguments {
>  };
>  #define OCFS2_IOC_REFLINK	_IOW('o', 4, struct reflink_arguments)
>  
> +/* Following definitions dedicated for ocfs2_info_request ioctls. */
> +#define OCFS2_INFO_MAX_REQUEST		(50)
> +#define OCFS2_TEXT_UUID_LEN		(OCFS2_VOL_UUID_LEN * 2)
> +
> +/* Magic number of all requests */
> +#define OCFS2_INFO_MAGIC		(0x4F32494E)
> +
> +/*
> + * Always try to separate info request into small pieces to
> + * guarantee the backward&forward compatibility.
> + */
> +struct ocfs2_info {
> +	__u64 oi_requests;	/* Array of __u64 pointers to requests */
> +	__u32 oi_count;	/* Number of requests in info_requests */
> +};
> +
> +struct ocfs2_info_request {
> +/*00*/	__u32 ir_magic;	/* Magic number */
> +	__u32 ir_code;	/* Info request code */
> +	__u32 ir_size;	/* Size of request */
> +	__u32 ir_flags;	/* Request flags */
> +/*10*/	/* Request specific fields */
> +};
> +
> +struct ocfs2_info_clustersize {
> +	struct ocfs2_info_request ic_req;
> +	__u32 ic_clustersize;
> +};
> +
> +struct ocfs2_info_blocksize {
> +	struct ocfs2_info_request ib_req;
> +	__u32 ib_blocksize;
> +};
> +
> +struct ocfs2_info_maxslots {
> +	struct ocfs2_info_request im_req;
> +	__u16 im_max_slots;
> +};
> +
> +struct ocfs2_info_label {
> +	struct ocfs2_info_request il_req;
> +	__u8	il_label[OCFS2_MAX_VOL_LABEL_LEN];
> +};
> +
> +struct ocfs2_info_uuid {
> +	struct ocfs2_info_request iu_req;
> +	__u8	iu_uuid_str[OCFS2_TEXT_UUID_LEN + 1];
> +};
> +
> +struct ocfs2_info_fs_features {
> +	struct ocfs2_info_request if_req;
> +	__u32 if_compat_features;
> +	__u32 if_incompat_features;
> +	__u32 if_ro_compat_features;
> +};
> +
> +/* Codes for ocfs2_info_request */
> +enum ocfs2_info_type {
> +	OCFS2_INFO_CLUSTERSIZE = 1,
> +	OCFS2_INFO_BLOCKSIZE,
> +	OCFS2_INFO_MAXSLOTS,
> +	OCFS2_INFO_LABEL,
> +	OCFS2_INFO_UUID,
> +	OCFS2_INFO_FS_FEATURES,
> +	OCFS2_INFO_NUM_TYPES
> +};
> +
> +/* Flags for struct ocfs2_info_request */
> +/* Filled by the caller */
> +#define OCFS2_INFO_FL_NON_COHERENT	(0x00000001)	/* Cluster coherency not
> +							   required. This is a hint.
> +							   It is up to ocfs2 whether
> +							   the request can be fulfilled
> +							   without locking. */
> +/* Filled by ocfs2 */
> +#define OCFS2_INFO_FL_FILLED		(0x80000000)	/* Filesystem understood
> +							   this request and
> +							   filled in the answer */
> +
> +#define OCFS2_IOC_INFO		_IOR('o', 5, struct ocfs2_info)
> +
>  #endif /* OCFS2_IOCTL_H */
>