linux-imx

// SPDX-License-Identifier: LGPL-2.1

/*

 * Copyright (c) 1995-2005 Silicon Graphics, Inc.

 * All Rights Reserved.

 */

#ifndef __XFS_FS_H__

#define __XFS_FS_H__

​

/*

 * SGI's XFS filesystem's major stuff (constants, structures)

 */

​

/*

 * Direct I/O attribute record used with XFS_IOC_DIOINFO

 * d_miniosz is the min xfer size, xfer size multiple and file seek offset

 * alignment.

 */

#ifndef HAVE_DIOATTR

struct dioattr {

    __u32       d_mem;      /* data buffer memory alignment */

    __u32       d_miniosz;  /* min xfer size        */

    __u32       d_maxiosz;  /* max xfer size        */

};

#endif

​

/*

 * Structure for XFS_IOC_GETBMAP.

 * On input, fill in bmv_offset and bmv_length of the first structure

 * to indicate the area of interest in the file, and bmv_entries with

 * the number of array elements given back.  The first structure is

 * updated on return to give the offset and length for the next call.

 */

#ifndef HAVE_GETBMAP

struct getbmap {

    __s64       bmv_offset; /* file offset of segment in blocks */

    __s64       bmv_block;  /* starting block (64-bit daddr_t)  */

    __s64       bmv_length; /* length of segment, blocks        */

    __s32       bmv_count;  /* # of entries in array incl. 1st  */

    __s32       bmv_entries;    /* # of entries filled in (output)  */

};

#endif

​

/*

 *  Structure for XFS_IOC_GETBMAPX.  Fields bmv_offset through bmv_entries

 *  are used exactly as in the getbmap structure.  The getbmapx structure

 *  has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field

 *  is only used for the first structure.  It contains input flags

 *  specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled

 *  in by the XFS_IOC_GETBMAPX command for each returned structure after

 *  the first.

 */

#ifndef HAVE_GETBMAPX

struct getbmapx {

    __s64       bmv_offset; /* file offset of segment in blocks */

    __s64       bmv_block;  /* starting block (64-bit daddr_t)  */

    __s64       bmv_length; /* length of segment, blocks        */

    __s32       bmv_count;  /* # of entries in array incl. 1st  */

    __s32       bmv_entries;    /* # of entries filled in (output). */

    __s32       bmv_iflags; /* input flags (1st structure)      */

    __s32       bmv_oflags; /* output flags (after 1st structure)*/

    __s32       bmv_unused1;    /* future use               */

    __s32       bmv_unused2;    /* future use               */

};

#endif

​

/*  bmv_iflags values - set by XFS_IOC_GETBMAPX caller. */

#define BMV_IF_ATTRFORK     0x1 /* return attr fork rather than data */

#define BMV_IF_NO_DMAPI_READ    0x2 /* Do not generate DMAPI read event  */

#define BMV_IF_PREALLOC     0x4 /* rtn status BMV_OF_PREALLOC if req */

#define BMV_IF_DELALLOC     0x8 /* rtn status BMV_OF_DELALLOC if req */

#define BMV_IF_NO_HOLES     0x10    /* Do not return holes */

#define BMV_IF_COWFORK      0x20    /* return CoW fork rather than data */

#define BMV_IF_VALID    \

    (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|  \

     BMV_IF_DELALLOC|BMV_IF_NO_HOLES|BMV_IF_COWFORK)

​

/*  bmv_oflags values - returned for each non-header segment */

#define BMV_OF_PREALLOC     0x1 /* segment = unwritten pre-allocation */

#define BMV_OF_DELALLOC     0x2 /* segment = delayed allocation */

#define BMV_OF_LAST     0x4 /* segment is the last in the file */

#define BMV_OF_SHARED       0x8 /* segment shared with another file */

​

/*  fmr_owner special values for FS_IOC_GETFSMAP */

#define XFS_FMR_OWN_FREE    FMR_OWN_FREE      /* free space */

#define XFS_FMR_OWN_UNKNOWN FMR_OWN_UNKNOWN   /* unknown owner */

#define XFS_FMR_OWN_FS      FMR_OWNER('X', 1) /* static fs metadata */

#define XFS_FMR_OWN_LOG     FMR_OWNER('X', 2) /* journalling log */

#define XFS_FMR_OWN_AG      FMR_OWNER('X', 3) /* per-AG metadata */

#define XFS_FMR_OWN_INOBT   FMR_OWNER('X', 4) /* inode btree blocks */

#define XFS_FMR_OWN_INODES  FMR_OWNER('X', 5) /* inodes */

#define XFS_FMR_OWN_REFC    FMR_OWNER('X', 6) /* refcount tree */

#define XFS_FMR_OWN_COW     FMR_OWNER('X', 7) /* cow staging */