[Ocfs2-tools-devel] [PATCH 04/19] Ocfs2-tools: Add all structures and commands OCFS2_IOC_INFO needed into ocfs2_ioctl.h

[tristan]

Sunil Mushran wrote:
> This will need to be refreshed from the kernel version.

Definitely.

>
> Tristan Ye wrote:
>> Signed-off-by: Tristan Ye <tristan.ye at oracle.com>
>> ---
>> include/ocfs2-kernel/ocfs2_ioctl.h | 117 
>> ++++++++++++++++++++++++++++++++++++
>> 1 files changed, 117 insertions(+), 0 deletions(-)
>>
>> diff --git a/include/ocfs2-kernel/ocfs2_ioctl.h 
>> b/include/ocfs2-kernel/ocfs2_ioctl.h
>> index 2d3420a..9cfe5be 100644
>> --- a/include/ocfs2-kernel/ocfs2_ioctl.h
>> +++ b/include/ocfs2-kernel/ocfs2_ioctl.h
>> @@ -76,4 +76,121 @@ struct reflink_arguments {
>> };
>> #define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments)
>>
>> +/* Following definitions dedicated for ocfs2_info_request ioctls. */
>> +
>> +#define OCFS2_INFO_VOL_UUID_LEN (16)
>> +#define OCFS2_INFO_MAX_VOL_LABEL_LEN (64)
>> +#define OCFS2_INFO_VOL_UUIDSTR_LEN (OCFS2_INFO_VOL_UUID_LEN * 2 + 1)
>> +#define OCFS2_INFO_MAX_SLOTS (255)
>> +#define OCFS2_INFO_MAX_HIST (32)
>> +
>> +#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 info_requests; /* Array of __u64 pointers to requests */
>> + __u32 info_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 ir_request;
>> + __u32 ir_clustersize;
>> +};
>> +
>> +struct ocfs2_info_blocksize {
>> + struct ocfs2_info_request ir_request;
>> + __u32 ir_blocksize;
>> +};
>> +
>> +struct ocfs2_info_slotnum {
>> + struct ocfs2_info_request ir_request;
>> + __u16 ir_slotnum;
>> +};
>> +
>> +struct ocfs2_info_label {
>> + struct ocfs2_info_request ir_request;
>> + __u8 ir_label[OCFS2_INFO_MAX_VOL_LABEL_LEN];
>> +};
>> +
>> +struct ocfs2_info_uuid {
>> + struct ocfs2_info_request ir_request;
>> + __u8 ir_uuid_str[OCFS2_INFO_VOL_UUIDSTR_LEN];
>> +};
>> +
>> +struct ocfs2_info_fs_features {
>> + struct ocfs2_info_request ir_request;
>> + __u32 ir_compat_features;
>> + __u32 ir_incompat_features;
>> + __u32 ir_ro_compat_features;
>> +};
>> +
>> +struct ocfs2_info_freefrag {
>> + struct ocfs2_info_request ir_request;
>> + __u32 ir_chunksize; /* chunksize in clusters(in) */
>> + struct ocfs2_info_freefrag_stats { /* (out) */
>> + __u32 ir_clusters;
>> + __u32 ir_free_clusters;
>> + __u32 ir_free_chunks;
>> + __u32 ir_free_chunks_real;
>> + __u32 ir_min; /* Minimum free chunksize in clusters */
>> + __u32 ir_max;
>> + __u32 ir_avg;
>> + struct ocfs2_info_free_chunk_list {
>> + __u32 ir_fc_chunks[OCFS2_INFO_MAX_HIST];
>> + __u32 ir_fc_clusters[OCFS2_INFO_MAX_HIST];
>> + } ir_fc_hist;
>> + } ir_ffg;
>> +};
>> +
>> +struct ocfs2_info_freeinode {
>> + struct ocfs2_info_request ir_request;
>> + __u32 ir_slotnum; /* out */
>> + struct ocfs2_info_local_fi {
>> + __u64 ir_total;
>> + __u64 ir_free;
>> + } ir_fi_stat[OCFS2_INFO_MAX_SLOTS];
>> +};
>> +
>> +/* Codes for ocfs2_info_request */
>> +enum ocfs2_info_type {
>> + OCFS2_INFO_CLUSTERSIZE = 1,
>> + OCFS2_INFO_BLOCKSIZE,
>> + OCFS2_INFO_SLOTNUM,
>> + OCFS2_INFO_LABEL,
>> + OCFS2_INFO_UUID,
>> + OCFS2_INFO_FS_FEATURES,
>> + OCFS2_INFO_FREEFRAG,
>> + OCFS2_INFO_FREEINODE,
>> + NUM_OCFS2_INFO_TYPE
>> +};
>> +
>> +/* 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 */
>