]>
Commit | Line | Data |
---|---|---|
959ef981 | 1 | // SPDX-License-Identifier: GPL-2.0 |
b626fb59 DC |
2 | /* |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. | |
4 | * All Rights Reserved. | |
b626fb59 DC |
5 | */ |
6 | ||
7 | #ifndef __XFS_MOUNT_H__ | |
8 | #define __XFS_MOUNT_H__ | |
9 | ||
10 | struct xfs_inode; | |
11 | struct xfs_buftarg; | |
12 | struct xfs_dir_ops; | |
13 | struct xfs_da_geometry; | |
14 | ||
15 | /* | |
16 | * Define a user-level mount structure with all we need | |
17 | * in order to make use of the numerous XFS_* macros. | |
18 | */ | |
19 | typedef struct xfs_mount { | |
20 | xfs_sb_t m_sb; /* copy of fs superblock */ | |
21 | #define m_icount m_sb.sb_icount | |
22 | #define m_ifree m_sb.sb_ifree | |
23 | #define m_fdblocks m_sb.sb_fdblocks | |
24 | char *m_fsname; /* filesystem name */ | |
25 | int m_bsize; /* fs logical block size */ | |
26 | xfs_agnumber_t m_agfrotor; /* last ag where space found */ | |
27 | xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ | |
28 | xfs_agnumber_t m_maxagi; /* highest inode alloc group */ | |
29 | uint m_rsumlevels; /* rt summary levels */ | |
30 | uint m_rsumsize; /* size of rt summary, bytes */ | |
31 | struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ | |
32 | struct xfs_inode *m_rsumip; /* pointer to summary inode */ | |
33 | struct xfs_buftarg *m_ddev_targp; | |
34 | struct xfs_buftarg *m_logdev_targp; | |
35 | struct xfs_buftarg *m_rtdev_targp; | |
36 | #define m_dev m_ddev_targp | |
37 | #define m_logdev m_logdev_targp | |
38 | #define m_rtdev m_rtdev_targp | |
14f8b681 DW |
39 | uint8_t m_dircook_elog; /* log d-cookie entry bits */ |
40 | uint8_t m_blkbit_log; /* blocklog + NBBY */ | |
41 | uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ | |
42 | uint8_t m_sectbb_log; /* sectorlog - BBSHIFT */ | |
43 | uint8_t m_agno_log; /* log #ag's */ | |
44 | uint8_t m_agino_log; /* #bits for agino in inum */ | |
b626fb59 DC |
45 | uint m_inode_cluster_size;/* min inode buf size */ |
46 | uint m_blockmask; /* sb_blocksize-1 */ | |
47 | uint m_blockwsize; /* sb_blocksize in words */ | |
48 | uint m_blockwmask; /* blockwsize-1 */ | |
49 | uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ | |
50 | uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ | |
51 | uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ | |
52 | uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ | |
53 | uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ | |
54 | uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ | |
b3a96b46 DW |
55 | uint m_rmap_mxr[2]; /* max rmap btree records */ |
56 | uint m_rmap_mnr[2]; /* min rmap btree records */ | |
d8079fe0 DW |
57 | uint m_refc_mxr[2]; /* max refc btree records */ |
58 | uint m_refc_mnr[2]; /* min refc btree records */ | |
b626fb59 DC |
59 | uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ |
60 | uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ | |
61 | uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ | |
b3a96b46 | 62 | uint m_rmap_maxlevels; /* max rmap btree levels */ |
d8079fe0 | 63 | uint m_refc_maxlevels; /* max refc btree levels */ |
ef5340cd | 64 | xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ |
b8a8d6e5 DW |
65 | uint m_alloc_set_aside; /* space we can't use */ |
66 | uint m_ag_max_usable; /* max space per AG */ | |
b626fb59 DC |
67 | struct radix_tree_root m_perag_tree; |
68 | uint m_flags; /* global mount flags */ | |
74e502ac | 69 | bool m_inotbt_nores; /* no per-AG finobt resv. */ |
b626fb59 DC |
70 | uint m_qflags; /* quota status flags */ |
71 | uint m_attroffset; /* inode attribute offset */ | |
72 | int m_ialloc_inos; /* inodes in inode allocation */ | |
73 | int m_ialloc_blks; /* blocks in inode allocation */ | |
62dc6cdb BF |
74 | int m_ialloc_min_blks; /* min blocks in sparse inode |
75 | * allocation */ | |
b626fb59 DC |
76 | int m_litino; /* size of inode union area */ |
77 | int m_inoalign_mask;/* mask sb_inoalignmt if used */ | |
78 | struct xfs_trans_resv m_resv; /* precomputed res values */ | |
14f8b681 | 79 | uint64_t m_maxicount; /* maximum inode count */ |
b626fb59 DC |
80 | int m_dalign; /* stripe unit */ |
81 | int m_swidth; /* stripe width */ | |
82 | int m_sinoalign; /* stripe unit inode alignmnt */ | |
83 | const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */ | |
84 | ||
85 | struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ | |
86 | struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ | |
87 | const struct xfs_dir_ops *m_dir_inode_ops; /* vector of dir inode ops */ | |
88 | const struct xfs_dir_ops *m_nondir_inode_ops; /* !dir inode ops */ | |
89 | #define M_DIROPS(mp) ((mp)->m_dir_inode_ops) | |
90 | ||
91 | /* | |
92 | * anonymous struct to allow xfs_dquot_buf.c to compile. | |
93 | * Pointer is always null in userspace, so code does not use it at all | |
94 | */ | |
95 | struct { | |
96 | int qi_dqperchunk; | |
97 | } *m_quotainfo; | |
98 | ||
1d6cb115 BF |
99 | /* |
100 | * xlog is defined in libxlog and thus is not intialized by libxfs. This | |
101 | * allows an application to initialize and store a reference to the log | |
102 | * if warranted. | |
103 | */ | |
104 | struct xlog *m_log; | |
b626fb59 DC |
105 | } xfs_mount_t; |
106 | ||
cf8ce220 DW |
107 | /* per-AG block reservation data structures*/ |
108 | enum xfs_ag_resv_type { | |
109 | XFS_AG_RESV_NONE = 0, | |
9760cac2 | 110 | XFS_AG_RESV_AGFL, |
cf8ce220 | 111 | XFS_AG_RESV_METADATA, |
65a15e06 | 112 | XFS_AG_RESV_RMAPBT, |
cf8ce220 DW |
113 | }; |
114 | ||
115 | struct xfs_ag_resv { | |
116 | /* number of blocks originally reserved here */ | |
117 | xfs_extlen_t ar_orig_reserved; | |
118 | /* number of blocks reserved here */ | |
119 | xfs_extlen_t ar_reserved; | |
120 | /* number of blocks originally asked for */ | |
121 | xfs_extlen_t ar_asked; | |
122 | }; | |
123 | ||
b626fb59 DC |
124 | /* |
125 | * Per-ag incore structure, copies of information in agf and agi, | |
126 | * to improve the performance of allocation group selection. | |
127 | */ | |
128 | typedef struct xfs_perag { | |
129 | struct xfs_mount *pag_mount; /* owner filesystem */ | |
130 | xfs_agnumber_t pag_agno; /* AG this structure belongs to */ | |
131 | atomic_t pag_ref; /* perag reference count */ | |
132 | char pagf_init; /* this agf's entry is initialized */ | |
133 | char pagi_init; /* this agi's entry is initialized */ | |
134 | char pagf_metadata; /* the agf is preferred to be metadata */ | |
135 | char pagi_inodeok; /* The agi is ok for inodes */ | |
14f8b681 | 136 | uint8_t pagf_levels[XFS_BTNUM_AGF]; |
b626fb59 | 137 | /* # of levels in bno & cnt btree */ |
8dbee8f5 | 138 | bool pagf_agflreset; /* agfl requires reset before use */ |
14f8b681 | 139 | uint32_t pagf_flcount; /* count of blocks in freelist */ |
b626fb59 DC |
140 | xfs_extlen_t pagf_freeblks; /* total free blocks */ |
141 | xfs_extlen_t pagf_longest; /* longest free space */ | |
14f8b681 | 142 | uint32_t pagf_btreeblks; /* # of blocks held in AGF btrees */ |
b626fb59 DC |
143 | xfs_agino_t pagi_freecount; /* number of free inodes */ |
144 | xfs_agino_t pagi_count; /* number of allocated inodes */ | |
145 | ||
146 | /* | |
147 | * Inode allocation search lookup optimisation. | |
148 | * If the pagino matches, the search for new inodes | |
149 | * doesn't need to search the near ones again straight away | |
150 | */ | |
151 | xfs_agino_t pagl_pagino; | |
152 | xfs_agino_t pagl_leftrec; | |
153 | xfs_agino_t pagl_rightrec; | |
154 | int pagb_count; /* pagb slots in use */ | |
cf8ce220 DW |
155 | |
156 | /* Blocks reserved for all kinds of metadata. */ | |
157 | struct xfs_ag_resv pag_meta_resv; | |
158 | /* Blocks reserved for just AGFL-based metadata. */ | |
65a15e06 | 159 | struct xfs_ag_resv pag_rmapbt_resv; |
cf8ce220 | 160 | |
88ce0792 | 161 | /* reference count */ |
14f8b681 | 162 | uint8_t pagf_refcount_level; |
b626fb59 DC |
163 | } xfs_perag_t; |
164 | ||
cf8ce220 DW |
165 | static inline struct xfs_ag_resv * |
166 | xfs_perag_resv( | |
167 | struct xfs_perag *pag, | |
168 | enum xfs_ag_resv_type type) | |
169 | { | |
170 | switch (type) { | |
171 | case XFS_AG_RESV_METADATA: | |
172 | return &pag->pag_meta_resv; | |
65a15e06 BF |
173 | case XFS_AG_RESV_RMAPBT: |
174 | return &pag->pag_rmapbt_resv; | |
cf8ce220 DW |
175 | default: |
176 | return NULL; | |
177 | } | |
178 | } | |
179 | ||
b626fb59 DC |
180 | #define LIBXFS_MOUNT_DEBUGGER 0x0001 |
181 | #define LIBXFS_MOUNT_32BITINODES 0x0002 | |
182 | #define LIBXFS_MOUNT_32BITINOOPT 0x0004 | |
183 | #define LIBXFS_MOUNT_COMPAT_ATTR 0x0008 | |
184 | #define LIBXFS_MOUNT_ATTR2 0x0010 | |
23639f77 | 185 | #define LIBXFS_MOUNT_WANT_CORRUPTED 0x0020 |
b626fb59 DC |
186 | |
187 | #define LIBXFS_BHASHSIZE(sbp) (1<<10) | |
188 | ||
189 | extern xfs_mount_t *libxfs_mount (xfs_mount_t *, xfs_sb_t *, | |
190 | dev_t, dev_t, dev_t, int); | |
191 | extern void libxfs_umount (xfs_mount_t *); | |
192 | extern void libxfs_rtmount_destroy (xfs_mount_t *); | |
193 | ||
194 | #endif /* __XFS_MOUNT_H__ */ |