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234 lines
6.5 KiB
234 lines
6.5 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* -*- mode: c; c-basic-offset: 8; -*- |
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* vim: noexpandtab sw=8 ts=8 sts=0: |
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* |
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* ocfs2_ioctl.h |
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* |
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* Defines OCFS2 ioctls. |
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* |
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* Copyright (C) 2010 Oracle. All rights reserved. |
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*/ |
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#ifndef OCFS2_IOCTL_H |
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#define OCFS2_IOCTL_H |
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/* |
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* ioctl commands |
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*/ |
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#define OCFS2_IOC_GETFLAGS FS_IOC_GETFLAGS |
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#define OCFS2_IOC_SETFLAGS FS_IOC_SETFLAGS |
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#define OCFS2_IOC32_GETFLAGS FS_IOC32_GETFLAGS |
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#define OCFS2_IOC32_SETFLAGS FS_IOC32_SETFLAGS |
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/* |
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* Space reservation / allocation / free ioctls and argument structure |
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* are designed to be compatible with XFS. |
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* |
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* ALLOCSP* and FREESP* are not and will never be supported, but are |
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* included here for completeness. |
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*/ |
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struct ocfs2_space_resv { |
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__s16 l_type; |
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__s16 l_whence; |
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__s64 l_start; |
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__s64 l_len; /* len == 0 means until end of file */ |
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__s32 l_sysid; |
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__u32 l_pid; |
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__s32 l_pad[4]; /* reserve area */ |
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}; |
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#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv) |
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#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv) |
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#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv) |
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#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv) |
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#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv) |
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#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv) |
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#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv) |
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#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv) |
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/* Used to pass group descriptor data when online resize is done */ |
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struct ocfs2_new_group_input { |
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__u64 group; /* Group descriptor's blkno. */ |
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__u32 clusters; /* Total number of clusters in this group */ |
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__u32 frees; /* Total free clusters in this group */ |
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__u16 chain; /* Chain for this group */ |
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__u16 reserved1; |
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__u32 reserved2; |
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}; |
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#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int) |
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#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input) |
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#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input) |
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/* Used to pass 2 file names to reflink. */ |
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struct reflink_arguments { |
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__u64 old_path; |
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__u64 new_path; |
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__u64 preserve; |
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}; |
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#define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments) |
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/* Following definitions dedicated for ocfs2_info_request ioctls. */ |
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#define OCFS2_INFO_MAX_REQUEST (50) |
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#define OCFS2_TEXT_UUID_LEN (OCFS2_VOL_UUID_LEN * 2) |
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/* Magic number of all requests */ |
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#define OCFS2_INFO_MAGIC (0x4F32494E) |
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/* |
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* Always try to separate info request into small pieces to |
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* guarantee the backward&forward compatibility. |
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*/ |
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struct ocfs2_info { |
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__u64 oi_requests; /* Array of __u64 pointers to requests */ |
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__u32 oi_count; /* Number of requests in info_requests */ |
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__u32 oi_pad; |
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}; |
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struct ocfs2_info_request { |
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/*00*/ __u32 ir_magic; /* Magic number */ |
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__u32 ir_code; /* Info request code */ |
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__u32 ir_size; /* Size of request */ |
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__u32 ir_flags; /* Request flags */ |
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/*10*/ /* Request specific fields */ |
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}; |
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struct ocfs2_info_clustersize { |
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struct ocfs2_info_request ic_req; |
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__u32 ic_clustersize; |
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__u32 ic_pad; |
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}; |
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struct ocfs2_info_blocksize { |
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struct ocfs2_info_request ib_req; |
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__u32 ib_blocksize; |
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__u32 ib_pad; |
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}; |
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struct ocfs2_info_maxslots { |
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struct ocfs2_info_request im_req; |
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__u32 im_max_slots; |
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__u32 im_pad; |
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}; |
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struct ocfs2_info_label { |
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struct ocfs2_info_request il_req; |
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__u8 il_label[OCFS2_MAX_VOL_LABEL_LEN]; |
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} __attribute__ ((packed)); |
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struct ocfs2_info_uuid { |
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struct ocfs2_info_request iu_req; |
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__u8 iu_uuid_str[OCFS2_TEXT_UUID_LEN + 1]; |
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} __attribute__ ((packed)); |
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struct ocfs2_info_fs_features { |
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struct ocfs2_info_request if_req; |
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__u32 if_compat_features; |
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__u32 if_incompat_features; |
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__u32 if_ro_compat_features; |
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__u32 if_pad; |
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}; |
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struct ocfs2_info_journal_size { |
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struct ocfs2_info_request ij_req; |
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__u64 ij_journal_size; |
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}; |
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struct ocfs2_info_freeinode { |
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struct ocfs2_info_request ifi_req; |
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struct ocfs2_info_local_freeinode { |
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__u64 lfi_total; |
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__u64 lfi_free; |
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} ifi_stat[OCFS2_MAX_SLOTS]; |
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__u32 ifi_slotnum; /* out */ |
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__u32 ifi_pad; |
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}; |
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#define OCFS2_INFO_MAX_HIST (32) |
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struct ocfs2_info_freefrag { |
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struct ocfs2_info_request iff_req; |
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struct ocfs2_info_freefrag_stats { /* (out) */ |
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struct ocfs2_info_free_chunk_list { |
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__u32 fc_chunks[OCFS2_INFO_MAX_HIST]; |
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__u32 fc_clusters[OCFS2_INFO_MAX_HIST]; |
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} ffs_fc_hist; |
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__u32 ffs_clusters; |
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__u32 ffs_free_clusters; |
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__u32 ffs_free_chunks; |
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__u32 ffs_free_chunks_real; |
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__u32 ffs_min; /* Minimum free chunksize in clusters */ |
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__u32 ffs_max; |
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__u32 ffs_avg; |
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__u32 ffs_pad; |
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} iff_ffs; |
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__u32 iff_chunksize; /* chunksize in clusters(in) */ |
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__u32 iff_pad; |
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}; |
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/* Codes for ocfs2_info_request */ |
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enum ocfs2_info_type { |
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OCFS2_INFO_CLUSTERSIZE = 1, |
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OCFS2_INFO_BLOCKSIZE, |
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OCFS2_INFO_MAXSLOTS, |
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OCFS2_INFO_LABEL, |
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OCFS2_INFO_UUID, |
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OCFS2_INFO_FS_FEATURES, |
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OCFS2_INFO_JOURNAL_SIZE, |
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OCFS2_INFO_FREEINODE, |
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OCFS2_INFO_FREEFRAG, |
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OCFS2_INFO_NUM_TYPES |
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}; |
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/* Flags for struct ocfs2_info_request */ |
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/* Filled by the caller */ |
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#define OCFS2_INFO_FL_NON_COHERENT (0x00000001) /* Cluster coherency not |
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required. This is a hint. |
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It is up to ocfs2 whether |
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the request can be fulfilled |
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without locking. */ |
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/* Filled by ocfs2 */ |
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#define OCFS2_INFO_FL_FILLED (0x40000000) /* Filesystem understood |
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this request and |
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filled in the answer */ |
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#define OCFS2_INFO_FL_ERROR (0x80000000) /* Error happened during |
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request handling. */ |
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#define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info) |
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struct ocfs2_move_extents { |
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/* All values are in bytes */ |
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/* in */ |
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__u64 me_start; /* Virtual start in the file to move */ |
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__u64 me_len; /* Length of the extents to be moved */ |
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__u64 me_goal; /* Physical offset of the goal, |
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it's in block unit */ |
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__u64 me_threshold; /* Maximum distance from goal or threshold |
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for auto defragmentation */ |
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__u64 me_flags; /* Flags for the operation: |
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* - auto defragmentation. |
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* - refcount,xattr cases. |
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*/ |
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/* out */ |
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__u64 me_moved_len; /* Moved/defraged length */ |
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__u64 me_new_offset; /* Resulting physical location */ |
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__u32 me_reserved[2]; /* Reserved for futhure */ |
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}; |
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#define OCFS2_MOVE_EXT_FL_AUTO_DEFRAG (0x00000001) /* Kernel manages to |
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claim new clusters |
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as the goal place |
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for extents moving */ |
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#define OCFS2_MOVE_EXT_FL_PART_DEFRAG (0x00000002) /* Allow partial extent |
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moving, is to make |
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movement less likely |
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to fail, may make fs |
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even more fragmented */ |
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#define OCFS2_MOVE_EXT_FL_COMPLETE (0x00000004) /* Move or defragmenation |
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completely gets done. |
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*/ |
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#define OCFS2_IOC_MOVE_EXT _IOW('o', 6, struct ocfs2_move_extents) |
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#endif /* OCFS2_IOCTL_H */
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