[Ocfs2-tools-devel] [PATCH 2/8] O2info: Add all structures and commands OCFS2_IOC_INFO needed into ocfs2_ioctl.h
Sunil Mushran
sunil.mushran at oracle.com
Tue Apr 20 14:06:49 PDT 2010
Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com>
Tristan Ye wrote:
> Signed-off-by: Tristan Ye <tristan.ye at oracle.com>
> ---
> include/ocfs2-kernel/ocfs2_ioctl.h | 80 ++++++++++++++++++++++++++++++++++++
> 1 files changed, 80 insertions(+), 0 deletions(-)
>
> diff --git a/include/ocfs2-kernel/ocfs2_ioctl.h b/include/ocfs2-kernel/ocfs2_ioctl.h
> index 2d3420a..12a5502 100644
> --- a/include/ocfs2-kernel/ocfs2_ioctl.h
> +++ b/include/ocfs2-kernel/ocfs2_ioctl.h
> @@ -76,4 +76,84 @@ 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)
> +
> +/* 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_VOL_UUIDSTR_LEN];
> +};
> +
> +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 */
>
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