mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 03:11:46 +00:00
220ebc4334
Patch also manages to add a manipulative struture for this ioctl. Signed-off-by: Tristan Ye <tristan.ye@oracle.com>
243 lines
6.9 KiB
C
243 lines
6.9 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
|
|
* vim: noexpandtab sw=8 ts=8 sts=0:
|
|
*
|
|
* ocfs2_ioctl.h
|
|
*
|
|
* Defines OCFS2 ioctls.
|
|
*
|
|
* Copyright (C) 2010 Oracle. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License, version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*/
|
|
|
|
#ifndef OCFS2_IOCTL_H
|
|
#define OCFS2_IOCTL_H
|
|
|
|
/*
|
|
* ioctl commands
|
|
*/
|
|
#define OCFS2_IOC_GETFLAGS FS_IOC_GETFLAGS
|
|
#define OCFS2_IOC_SETFLAGS FS_IOC_SETFLAGS
|
|
#define OCFS2_IOC32_GETFLAGS FS_IOC32_GETFLAGS
|
|
#define OCFS2_IOC32_SETFLAGS FS_IOC32_SETFLAGS
|
|
|
|
/*
|
|
* Space reservation / allocation / free ioctls and argument structure
|
|
* are designed to be compatible with XFS.
|
|
*
|
|
* ALLOCSP* and FREESP* are not and will never be supported, but are
|
|
* included here for completeness.
|
|
*/
|
|
struct ocfs2_space_resv {
|
|
__s16 l_type;
|
|
__s16 l_whence;
|
|
__s64 l_start;
|
|
__s64 l_len; /* len == 0 means until end of file */
|
|
__s32 l_sysid;
|
|
__u32 l_pid;
|
|
__s32 l_pad[4]; /* reserve area */
|
|
};
|
|
|
|
#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv)
|
|
#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv)
|
|
#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv)
|
|
#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv)
|
|
#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv)
|
|
#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv)
|
|
#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv)
|
|
#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv)
|
|
|
|
/* Used to pass group descriptor data when online resize is done */
|
|
struct ocfs2_new_group_input {
|
|
__u64 group; /* Group descriptor's blkno. */
|
|
__u32 clusters; /* Total number of clusters in this group */
|
|
__u32 frees; /* Total free clusters in this group */
|
|
__u16 chain; /* Chain for this group */
|
|
__u16 reserved1;
|
|
__u32 reserved2;
|
|
};
|
|
|
|
#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int)
|
|
#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input)
|
|
#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input)
|
|
|
|
/* Used to pass 2 file names to reflink. */
|
|
struct reflink_arguments {
|
|
__u64 old_path;
|
|
__u64 new_path;
|
|
__u64 preserve;
|
|
};
|
|
#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 */
|
|
__u32 oi_pad;
|
|
};
|
|
|
|
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;
|
|
__u32 ic_pad;
|
|
};
|
|
|
|
struct ocfs2_info_blocksize {
|
|
struct ocfs2_info_request ib_req;
|
|
__u32 ib_blocksize;
|
|
__u32 ib_pad;
|
|
};
|
|
|
|
struct ocfs2_info_maxslots {
|
|
struct ocfs2_info_request im_req;
|
|
__u32 im_max_slots;
|
|
__u32 im_pad;
|
|
};
|
|
|
|
struct ocfs2_info_label {
|
|
struct ocfs2_info_request il_req;
|
|
__u8 il_label[OCFS2_MAX_VOL_LABEL_LEN];
|
|
} __attribute__ ((packed));
|
|
|
|
struct ocfs2_info_uuid {
|
|
struct ocfs2_info_request iu_req;
|
|
__u8 iu_uuid_str[OCFS2_TEXT_UUID_LEN + 1];
|
|
} __attribute__ ((packed));
|
|
|
|
struct ocfs2_info_fs_features {
|
|
struct ocfs2_info_request if_req;
|
|
__u32 if_compat_features;
|
|
__u32 if_incompat_features;
|
|
__u32 if_ro_compat_features;
|
|
__u32 if_pad;
|
|
};
|
|
|
|
struct ocfs2_info_journal_size {
|
|
struct ocfs2_info_request ij_req;
|
|
__u64 ij_journal_size;
|
|
};
|
|
|
|
struct ocfs2_info_freeinode {
|
|
struct ocfs2_info_request ifi_req;
|
|
struct ocfs2_info_local_freeinode {
|
|
__u64 lfi_total;
|
|
__u64 lfi_free;
|
|
} ifi_stat[OCFS2_MAX_SLOTS];
|
|
__u32 ifi_slotnum; /* out */
|
|
__u32 ifi_pad;
|
|
};
|
|
|
|
#define OCFS2_INFO_MAX_HIST (32)
|
|
|
|
struct ocfs2_info_freefrag {
|
|
struct ocfs2_info_request iff_req;
|
|
struct ocfs2_info_freefrag_stats { /* (out) */
|
|
struct ocfs2_info_free_chunk_list {
|
|
__u32 fc_chunks[OCFS2_INFO_MAX_HIST];
|
|
__u32 fc_clusters[OCFS2_INFO_MAX_HIST];
|
|
} ffs_fc_hist;
|
|
__u32 ffs_clusters;
|
|
__u32 ffs_free_clusters;
|
|
__u32 ffs_free_chunks;
|
|
__u32 ffs_free_chunks_real;
|
|
__u32 ffs_min; /* Minimum free chunksize in clusters */
|
|
__u32 ffs_max;
|
|
__u32 ffs_avg;
|
|
__u32 ffs_pad;
|
|
} iff_ffs;
|
|
__u32 iff_chunksize; /* chunksize in clusters(in) */
|
|
__u32 iff_pad;
|
|
};
|
|
|
|
/* 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_JOURNAL_SIZE,
|
|
OCFS2_INFO_FREEINODE,
|
|
OCFS2_INFO_FREEFRAG,
|
|
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 (0x40000000) /* Filesystem understood
|
|
this request and
|
|
filled in the answer */
|
|
|
|
#define OCFS2_INFO_FL_ERROR (0x80000000) /* Error happened during
|
|
request handling. */
|
|
|
|
#define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info)
|
|
|
|
struct ocfs2_move_extents {
|
|
/* All values are in bytes */
|
|
/* in */
|
|
__u64 me_start; /* Virtual start in the file to move */
|
|
__u64 me_len; /* Length of the extents to be moved */
|
|
__u64 me_goal; /* Physical offset of the goal,
|
|
it's in block unit */
|
|
__u64 me_threshold; /* Maximum distance from goal or threshold
|
|
for auto defragmentation */
|
|
__u64 me_flags; /* Flags for the operation:
|
|
* - auto defragmentation.
|
|
* - refcount,xattr cases.
|
|
*/
|
|
/* out */
|
|
__u64 me_moved_len; /* Moved/defraged length */
|
|
__u64 me_new_offset; /* Resulting physical location */
|
|
__u32 me_reserved[2]; /* Reserved for futhure */
|
|
};
|
|
|
|
#define OCFS2_MOVE_EXT_FL_AUTO_DEFRAG (0x00000001) /* Kernel manages to
|
|
claim new clusters
|
|
as the goal place
|
|
for extents moving */
|
|
#define OCFS2_MOVE_EXT_FL_PART_DEFRAG (0x00000002) /* Allow partial extent
|
|
moving, is to make
|
|
movement less likely
|
|
to fail, may make fs
|
|
even more fragmented */
|
|
#define OCFS2_MOVE_EXT_FL_COMPLETE (0x00000004) /* Move or defragmenation
|
|
completely gets done.
|
|
*/
|
|
|
|
#define OCFS2_IOC_MOVE_EXT _IOW('o', 6, struct ocfs2_move_extents)
|
|
|
|
#endif /* OCFS2_IOCTL_H */
|