path: root/fs/xfs/libxfs/xfs_fs.h

/* 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)
 * NOTE: This file must be compile-able with C++ compilers.
 */

/*
 * 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	/* Deprecated */
#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 */
#define XFS_FMR_OWN_DEFECTIVE	FMR_OWNER('X', 8) /* bad blocks */

/*
 * File segment locking set data type for 64 bit access.
 * Also used for all the RESV/FREE interfaces.
 */
typedef struct xfs_flock64 {
	__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			    */
} xfs_flock64_t;

/*
 * Output for XFS_IOC_FSGEOMETRY_V1
 */
struct xfs_fsop_geom_v1 {
	__u32		blocksize;	/* filesystem (data) block size */
	__u32		rtextsize;	/* realtime extent size		*/
	__u32		agblocks;	/* fsblocks in an AG		*/
	__u32		agcount;	/* number of allocation groups	*/
	__u32		logblocks;	/* fsblocks in the log		*/
	__u32		sectsize;	/* (data) sector size, bytes	*/
	__u32		inodesize;	/* inode size in bytes		*/
	__u32		imaxpct;	/* max allowed inode space(%)	*/
	__u64		datablocks;	/* fsblocks in data subvolume	*/
	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
	__u64		rtextents;	/* rt extents in realtime subvol*/
	__u64		logstart;	/* starting fsblock of the log	*/
	unsigned char	uuid[16];	/* unique id of the filesystem	*/
	__u32		sunit;		/* stripe unit, fsblocks	*/
	__u32		swidth;		/* stripe width, fsblocks	*/
	__s32		version;	/* structure version		*/
	__u32		flags;		/* superblock version flags	*/
	__u32		logsectsize;	/* log sector size, bytes	*/
	__u32		rtsectsize;	/* realtime sector size, bytes	*/
	__u32		dirblocksize;	/* directory block size, bytes	*/
};

/*
 * Output for XFS_IOC_FSGEOMETRY_V4
 */
struct xfs_fsop_geom_v4 {
	__u32		blocksize;	/* filesystem (data) block size */
	__u32		rtextsize;	/* realtime extent size		*/
	__u32		agblocks;	/* fsblocks in an AG		*/
	__u32		agcount;	/* number of allocation groups	*/
	__u32		logblocks;	/* fsblocks in the log		*/
	__u32		sectsize;	/* (data) sector size, bytes	*/
	__u32		inodesize;	/* inode size in bytes		*/
	__u32		imaxpct;	/* max allowed inode space(%)	*/
	__u64		datablocks;	/* fsblocks in data subvolume	*/
	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
	__u64		rtextents;	/* rt extents in realtime subvol*/
	__u64		logstart;	/* starting fsblock of the log	*/
	unsigned char	uuid[16];	/* unique id of the filesystem	*/
	__u32		sunit;		/* stripe unit, fsblocks	*/
	__u32		swidth;		/* stripe width, fsblocks	*/
	__s32		version;	/* structure version		*/
	__u32		flags;		/* superblock version flags	*/
	__u32		logsectsize;	/* log sector size, bytes	*/
	__u32		rtsectsize;	/* realtime sector size, bytes	*/
	__u32		dirblocksize;	/* directory block size, bytes	*/
	__u32		logsunit;	/* log stripe unit, bytes	*/
};

/*
 * Output for XFS_IOC_FSGEOMETRY
 */
struct xfs_fsop_geom {
	__u32		blocksize;	/* filesystem (data) block size */
	__u32		rtextsize;	/* realtime extent size		*/
	__u32		agblocks;	/* fsblocks in an AG		*/
	__u32		agcount;	/* number of allocation groups	*/
	__u32		logblocks;	/* fsblocks in the log		*/
	__u32		sectsize;	/* (data) sector size, bytes	*/
	__u32		inodesize;	/* inode size in bytes		*/
	__u32		imaxpct;	/* max allowed inode space(%)	*/
	__u64		datablocks;	/* fsblocks in data subvolume	*/
	__u64		rtblocks;	/* fsblocks in realtime subvol	*/
	__u64		rtextents;	/* rt extents in realtime subvol*/
	__u64		logstart;	/* starting fsblock of the log	*/
	unsigned char	uuid[16];	/* unique id of the filesystem	*/
	__u32		sunit;		/* stripe unit, fsblocks	*/
	__u32		swidth;		/* stripe width, fsblocks	*/
	__s32		version;	/* structure version		*/
	__u32		flags;		/* superblock version flags	*/
	__u32		logsectsize;	/* log sector size, bytes	*/
	__u32		rtsectsize;	/* realtime sector size, bytes	*/
	__u32		dirblocksize;	/* directory block size, bytes	*/
	__u32		logsunit;	/* log stripe unit, bytes	*/
	uint32_t	sick;		/* o: unhealthy fs & rt metadata */
	uint32_t	checked;	/* o: checked fs & rt metadata	*/
	__u64		reserved[17];	/* reserved space		*/
};

#define XFS_FSOP_GEOM_SICK_COUNTERS	(1 << 0)  /* summary counters */
#define XFS_FSOP_GEOM_SICK_UQUOTA	(1 << 1)  /* user quota */
#define XFS_FSOP_GEOM_SICK_GQUOTA	(1 << 2)  /* group quota */
#define XFS_FSOP_GEOM_SICK_PQUOTA	(1 << 3)  /* project quota */
#define XFS_FSOP_GEOM_SICK_RT_BITMAP	(1 << 4)  /* realtime bitmap */
#define XFS_FSOP_GEOM_SICK_RT_SUMMARY	(1 << 5)  /* realtime summary */
#define XFS_FSOP_GEOM_SICK_QUOTACHECK	(1 << 6)  /* quota counts */
#define XFS_FSOP_GEOM_SICK_NLINKS	(1 << 7)  /* inode link counts */

/* Output for XFS_FS_COUNTS */
typedef struct xfs_fsop_counts {
	__u64	freedata;	/* free data section blocks */
	__u64	freertx;	/* free rt extents */
	__u64	freeino;	/* free inodes */
	__u64	allocino;	/* total allocated inodes */
} xfs_fsop_counts_t;

/* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */