Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (c) 2000-2005 Silicon Graphics, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (c) 2013 Red Hat, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #ifndef __XFS_SHARED_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #define __XFS_SHARED_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Definitions shared between kernel and userspace that don't fit into any other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * header file that is shared with userspace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) struct xfs_ifork;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) struct xfs_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) struct xfs_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) struct xfs_mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) struct xfs_trans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) struct xfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  * Buffer verifier operations are widely used, including userspace tools
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) extern const struct xfs_buf_ops xfs_agf_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) extern const struct xfs_buf_ops xfs_agi_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) extern const struct xfs_buf_ops xfs_agf_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) extern const struct xfs_buf_ops xfs_agfl_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) extern const struct xfs_buf_ops xfs_bnobt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) extern const struct xfs_buf_ops xfs_cntbt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) extern const struct xfs_buf_ops xfs_rmapbt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) extern const struct xfs_buf_ops xfs_refcountbt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) extern const struct xfs_buf_ops xfs_attr3_leaf_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) extern const struct xfs_buf_ops xfs_attr3_rmt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) extern const struct xfs_buf_ops xfs_bmbt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) extern const struct xfs_buf_ops xfs_da3_node_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) extern const struct xfs_buf_ops xfs_dquot_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) extern const struct xfs_buf_ops xfs_symlink_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) extern const struct xfs_buf_ops xfs_agi_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) extern const struct xfs_buf_ops xfs_inobt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) extern const struct xfs_buf_ops xfs_finobt_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) extern const struct xfs_buf_ops xfs_inode_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) extern const struct xfs_buf_ops xfs_inode_buf_ra_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) extern const struct xfs_buf_ops xfs_dquot_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) extern const struct xfs_buf_ops xfs_dquot_buf_ra_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) extern const struct xfs_buf_ops xfs_sb_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) extern const struct xfs_buf_ops xfs_symlink_buf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) extern const struct xfs_buf_ops xfs_rtbuf_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) /* log size calculation functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) int	xfs_log_calc_unit_res(struct xfs_mount *mp, int unit_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) int	xfs_log_calc_minimum_size(struct xfs_mount *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) struct xfs_trans_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) void	xfs_log_get_max_trans_res(struct xfs_mount *mp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 				  struct xfs_trans_res *max_resp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59)  * Values for t_flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) #define	XFS_TRANS_DIRTY		0x01	/* something needs to be logged */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) #define	XFS_TRANS_SB_DIRTY	0x02	/* superblock is modified */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) #define	XFS_TRANS_PERM_LOG_RES	0x04	/* xact took a permanent log res */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define	XFS_TRANS_SYNC		0x08	/* make commit synchronous */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) #define XFS_TRANS_DQ_DIRTY	0x10	/* at least one dquot in trx dirty */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define XFS_TRANS_RESERVE	0x20    /* OK to use reserved data blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) #define XFS_TRANS_NO_WRITECOUNT 0x40	/* do not elevate SB writecount */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) #define XFS_TRANS_RES_FDBLKS	0x80	/* reserve newly freed blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70)  * LOWMODE is used by the allocator to activate the lowspace algorithm - when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)  * free space is running low the extent allocator may choose to allocate an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72)  * extent from an AG without leaving sufficient space for a btree split when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73)  * inserting the new extent. In this case the allocator will enable the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74)  * lowspace algorithm which is supposed to allow further allocations (such as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75)  * btree splits and newroots) to allocate from sequential AGs. In order to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76)  * avoid locking AGs out of order the lowspace algorithm will start searching
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)  * for free space from AG 0. If the correct transaction reservations have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78)  * made then this algorithm will eventually find all the space it needs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) #define XFS_TRANS_LOWMODE	0x100	/* allocate in low space mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83)  * Field values for xfs_trans_mod_sb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) #define	XFS_TRANS_SB_ICOUNT		0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) #define	XFS_TRANS_SB_IFREE		0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) #define	XFS_TRANS_SB_FDBLOCKS		0x00000004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) #define	XFS_TRANS_SB_RES_FDBLOCKS	0x00000008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) #define	XFS_TRANS_SB_FREXTENTS		0x00000010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) #define	XFS_TRANS_SB_RES_FREXTENTS	0x00000020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) #define	XFS_TRANS_SB_DBLOCKS		0x00000040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) #define	XFS_TRANS_SB_AGCOUNT		0x00000080
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) #define	XFS_TRANS_SB_IMAXPCT		0x00000100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) #define	XFS_TRANS_SB_REXTSIZE		0x00000200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) #define	XFS_TRANS_SB_RBMBLOCKS		0x00000400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) #define	XFS_TRANS_SB_RBLOCKS		0x00000800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) #define	XFS_TRANS_SB_REXTENTS		0x00001000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) #define	XFS_TRANS_SB_REXTSLOG		0x00002000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)  * Here we centralize the specification of XFS meta-data buffer reference count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)  * values.  This determines how hard the buffer cache tries to hold onto the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)  * buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define	XFS_AGF_REF		4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define	XFS_AGI_REF		4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define	XFS_AGFL_REF		3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define	XFS_INO_BTREE_REF	3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define	XFS_ALLOC_BTREE_REF	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define	XFS_BMAP_BTREE_REF	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define	XFS_RMAP_BTREE_REF	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define	XFS_DIR_BTREE_REF	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #define	XFS_INO_REF		2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #define	XFS_ATTR_BTREE_REF	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define	XFS_DQUOT_REF		1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define	XFS_REFC_BTREE_REF	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define	XFS_SSB_REF		0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)  * Flags for xfs_trans_ichgtime().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define	XFS_ICHGTIME_MOD	0x1	/* data fork modification timestamp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #define	XFS_ICHGTIME_CHG	0x2	/* inode field change timestamp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define	XFS_ICHGTIME_CREATE	0x4	/* inode create timestamp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)  * Symlink decoding/encoding functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 			uint32_t size, struct xfs_buf *bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) bool xfs_symlink_hdr_ok(xfs_ino_t ino, uint32_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 			uint32_t size, struct xfs_buf *bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 				 struct xfs_inode *ip, struct xfs_ifork *ifp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) xfs_failaddr_t xfs_symlink_shortform_verify(struct xfs_inode *ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* Computed inode geometry for the filesystem. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct xfs_ino_geometry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	/* Maximum inode count in this filesystem. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	uint64_t	maxicount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	/* Actual inode cluster buffer size, in bytes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	unsigned int	inode_cluster_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	 * Desired inode cluster buffer size, in bytes.  This value is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	 * rounded up to at least one filesystem block, which is necessary for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	 * the sole purpose of validating sb_spino_align.  Runtime code must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	 * only ever use inode_cluster_size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	unsigned int	inode_cluster_size_raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	/* Inode cluster sizes, adjusted to be at least 1 fsb. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	unsigned int	inodes_per_cluster;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	unsigned int	blocks_per_cluster;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	/* Inode cluster alignment. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	unsigned int	cluster_align;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	unsigned int	cluster_align_inodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	unsigned int	inoalign_mask;	/* mask sb_inoalignmt if used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	unsigned int	inobt_mxr[2]; /* max inobt btree records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	unsigned int	inobt_mnr[2]; /* min inobt btree records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	unsigned int	inobt_maxlevels; /* max inobt btree levels. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	/* Size of inode allocations under normal operation. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	unsigned int	ialloc_inos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	unsigned int	ialloc_blks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	/* Minimum inode blocks for a sparse allocation. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	unsigned int	ialloc_min_blks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	/* stripe unit inode alignment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	unsigned int	ialloc_align;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	unsigned int	agino_log;	/* #bits for agino in inum */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	/* precomputed value for di_flags2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	uint64_t	new_diflags2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #endif /* __XFS_SHARED_H__ */