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1/*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 *
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
25 *
26 * http://www.sgi.com
27 *
28 * For further information regarding this notice, see:
29 *
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
31 */
32#ifndef __XFS_MOUNT_H__
33#define __XFS_MOUNT_H__
34
35
36typedef struct xfs_trans_reservations {
37 uint tr_write; /* extent alloc trans */
38 uint tr_itruncate; /* truncate trans */
39 uint tr_rename; /* rename trans */
40 uint tr_link; /* link trans */
41 uint tr_remove; /* unlink trans */
42 uint tr_symlink; /* symlink trans */
43 uint tr_create; /* create trans */
44 uint tr_mkdir; /* mkdir trans */
45 uint tr_ifree; /* inode free trans */
46 uint tr_ichange; /* inode update trans */
47 uint tr_growdata; /* fs data section grow trans */
48 uint tr_swrite; /* sync write inode trans */
49 uint tr_addafork; /* cvt inode to attributed trans */
50 uint tr_writeid; /* write setuid/setgid file */
51 uint tr_attrinval; /* attr fork buffer invalidation */
52 uint tr_attrset; /* set/create an attribute */
53 uint tr_attrrm; /* remove an attribute */
54 uint tr_clearagi; /* clear bad agi unlinked ino bucket */
55 uint tr_growrtalloc; /* grow realtime allocations */
56 uint tr_growrtzero; /* grow realtime zeroing */
57 uint tr_growrtfree; /* grow realtime freeing */
58} xfs_trans_reservations_t;
59
60
61#ifndef __KERNEL__
62/*
63 * Moved here from xfs_ag.h to avoid reordering header files
64 */
65#define XFS_DADDR_TO_AGNO(mp,d) \
66 ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
67#define XFS_DADDR_TO_AGBNO(mp,d) \
68 ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
69#else
70struct cred;
71struct log;
72struct vfs;
73struct vnode;
74struct xfs_mount_args;
75struct xfs_ihash;
76struct xfs_chash;
77struct xfs_inode;
78struct xfs_perag;
79struct xfs_iocore;
80struct xfs_bmbt_irec;
81struct xfs_bmap_free;
82
83#define AIL_LOCK_T lock_t
84#define AIL_LOCKINIT(x,y) spinlock_init(x,y)
85#define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
86#define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock)
87#define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s)
88
89
90/*
91 * Prototypes and functions for the Data Migration subsystem.
92 */
93
94typedef int (*xfs_send_data_t)(int, struct vnode *,
95 xfs_off_t, size_t, int, vrwlock_t *);
96typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
97typedef int (*xfs_send_destroy_t)(struct vnode *, dm_right_t);
98typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct vfs *,
99 struct vnode *,
100 dm_right_t, struct vnode *, dm_right_t,
101 char *, char *, mode_t, int, int);
102typedef void (*xfs_send_unmount_t)(struct vfs *, struct vnode *,
103 dm_right_t, mode_t, int, int);
104
105typedef struct xfs_dmops {
106 xfs_send_data_t xfs_send_data;
107 xfs_send_mmap_t xfs_send_mmap;
108 xfs_send_destroy_t xfs_send_destroy;
109 xfs_send_namesp_t xfs_send_namesp;
110 xfs_send_unmount_t xfs_send_unmount;
111} xfs_dmops_t;
112
113#define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
114 (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock)
115#define XFS_SEND_MMAP(mp, vma,fl) \
116 (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl)
117#define XFS_SEND_DESTROY(mp, vp,right) \
118 (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right)
119#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
120 (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
121#define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
122 (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl)
123#define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \
124 (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl)
125
126
127/*
128 * Prototypes and functions for the Quota Management subsystem.
129 */
130
131struct xfs_dquot;
132struct xfs_dqtrxops;
133struct xfs_quotainfo;
134
135typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
136typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
137typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
138typedef void (*xfs_qmdone_t)(struct xfs_mount *);
139typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
140typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
141typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
142typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
143typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
144 struct xfs_inode *, uid_t, gid_t, uint,
145 struct xfs_dquot **, struct xfs_dquot **);
146typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
147 struct xfs_dquot *, struct xfs_dquot *);
148typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
149typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
150 struct xfs_trans *, struct xfs_inode *,
151 struct xfs_dquot **, struct xfs_dquot *);
152typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
153 struct xfs_dquot *, struct xfs_dquot *, uint);
154
155typedef struct xfs_qmops {
156 xfs_qminit_t xfs_qminit;
157 xfs_qmdone_t xfs_qmdone;
158 xfs_qmmount_t xfs_qmmount;
159 xfs_qmunmount_t xfs_qmunmount;
160 xfs_dqrele_t xfs_dqrele;
161 xfs_dqattach_t xfs_dqattach;
162 xfs_dqdetach_t xfs_dqdetach;
163 xfs_dqpurgeall_t xfs_dqpurgeall;
164 xfs_dqvopalloc_t xfs_dqvopalloc;
165 xfs_dqvopcreate_t xfs_dqvopcreate;
166 xfs_dqvoprename_t xfs_dqvoprename;
167 xfs_dqvopchown_t xfs_dqvopchown;
168 xfs_dqvopchownresv_t xfs_dqvopchownresv;
169 struct xfs_dqtrxops *xfs_dqtrxops;
170} xfs_qmops_t;
171
172#define XFS_QM_INIT(mp, mnt, fl) \
173 (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl)
174#define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
175 (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags)
176#define XFS_QM_UNMOUNT(mp) \
177 (*(mp)->m_qm_ops.xfs_qmunmount)(mp)
178#define XFS_QM_DONE(mp) \
179 (*(mp)->m_qm_ops.xfs_qmdone)(mp)
180#define XFS_QM_DQRELE(mp, dq) \
181 (*(mp)->m_qm_ops.xfs_dqrele)(dq)
182#define XFS_QM_DQATTACH(mp, ip, fl) \
183 (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl)
184#define XFS_QM_DQDETACH(mp, ip) \
185 (*(mp)->m_qm_ops.xfs_dqdetach)(ip)
186#define XFS_QM_DQPURGEALL(mp, fl) \
187 (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl)
188#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, fl, dq1, dq2) \
189 (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, fl, dq1, dq2)
190#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
191 (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2)
192#define XFS_QM_DQVOPRENAME(mp, ip) \
193 (*(mp)->m_qm_ops.xfs_dqvoprename)(ip)
194#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
195 (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq)
196#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
197 (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
198
199
200/*
201 * Prototypes and functions for I/O core modularization.
202 */
203
204typedef int (*xfs_ioinit_t)(struct vfs *,
205 struct xfs_mount_args *, int);
206typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *,
207 xfs_fileoff_t, xfs_filblks_t, int,
208 xfs_fsblock_t *, xfs_extlen_t,
209 struct xfs_bmbt_irec *, int *,
210 struct xfs_bmap_free *);
211typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
212typedef int (*xfs_iomap_write_direct_t)(
213 void *, loff_t, size_t, int,
214 struct xfs_bmbt_irec *, int *, int);
215typedef int (*xfs_iomap_write_delay_t)(
216 void *, loff_t, size_t, int,
217 struct xfs_bmbt_irec *, int *);
218typedef int (*xfs_iomap_write_allocate_t)(
219 void *, struct xfs_bmbt_irec *, int *);
220typedef int (*xfs_iomap_write_unwritten_t)(
221 void *, loff_t, size_t);
222typedef uint (*xfs_lck_map_shared_t)(void *);
223typedef void (*xfs_lock_t)(void *, uint);
224typedef void (*xfs_lock_demote_t)(void *, uint);
225typedef int (*xfs_lock_nowait_t)(void *, uint);
226typedef void (*xfs_unlk_t)(void *, unsigned int);
227typedef xfs_fsize_t (*xfs_size_t)(void *);
228typedef xfs_fsize_t (*xfs_iodone_t)(struct vfs *);
229
230typedef struct xfs_ioops {
231 xfs_ioinit_t xfs_ioinit;
232 xfs_bmapi_t xfs_bmapi_func;
233 xfs_bmap_eof_t xfs_bmap_eof_func;
234 xfs_iomap_write_direct_t xfs_iomap_write_direct;
235 xfs_iomap_write_delay_t xfs_iomap_write_delay;
236 xfs_iomap_write_allocate_t xfs_iomap_write_allocate;
237 xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten;
238 xfs_lock_t xfs_ilock;
239 xfs_lck_map_shared_t xfs_lck_map_shared;
240 xfs_lock_demote_t xfs_ilock_demote;
241 xfs_lock_nowait_t xfs_ilock_nowait;
242 xfs_unlk_t xfs_unlock;
243 xfs_size_t xfs_size_func;
244 xfs_iodone_t xfs_iodone;
245} xfs_ioops_t;
246
247#define XFS_IOINIT(vfsp, args, flags) \
248 (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
249#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist) \
250 (*(mp)->m_io_ops.xfs_bmapi_func) \
251 (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist)
252#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
253 (*(mp)->m_io_ops.xfs_bmap_eof_func) \
254 ((io)->io_obj, endoff, whichfork, eof)
255#define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
256 (*(mp)->m_io_ops.xfs_iomap_write_direct) \
257 ((io)->io_obj, offset, count, flags, mval, nmap, found)
258#define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
259 (*(mp)->m_io_ops.xfs_iomap_write_delay) \
260 ((io)->io_obj, offset, count, flags, mval, nmap)
261#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, mval, nmap) \
262 (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
263 ((io)->io_obj, mval, nmap)
264#define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
265 (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
266 ((io)->io_obj, offset, count)
267#define XFS_LCK_MAP_SHARED(mp, io) \
268 (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
269#define XFS_ILOCK(mp, io, mode) \
270 (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
271#define XFS_ILOCK_NOWAIT(mp, io, mode) \
272 (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
273#define XFS_IUNLOCK(mp, io, mode) \
274 (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
275#define XFS_ILOCK_DEMOTE(mp, io, mode) \
276 (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
277#define XFS_SIZE(mp, io) \
278 (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
279#define XFS_IODONE(vfsp) \
280 (*(mp)->m_io_ops.xfs_iodone)(vfsp)
281
282
283typedef struct xfs_mount {
284 bhv_desc_t m_bhv; /* vfs xfs behavior */
285 xfs_tid_t m_tid; /* next unused tid for fs */
286 AIL_LOCK_T m_ail_lock; /* fs AIL mutex */
287 xfs_ail_entry_t m_ail; /* fs active log item list */
288 uint m_ail_gen; /* fs AIL generation count */
289 xfs_sb_t m_sb; /* copy of fs superblock */
290 lock_t m_sb_lock; /* sb counter mutex */
291 struct xfs_buf *m_sb_bp; /* buffer for superblock */
292 char *m_fsname; /* filesystem name */
293 int m_fsname_len; /* strlen of fs name */
294 int m_bsize; /* fs logical block size */
295 xfs_agnumber_t m_agfrotor; /* last ag where space found */
296 xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
297 lock_t m_agirotor_lock;/* .. and lock protecting it */
298 xfs_agnumber_t m_maxagi; /* highest inode alloc group */
299 uint m_ihsize; /* size of next field */
300 struct xfs_ihash *m_ihash; /* fs private inode hash table*/
301 struct xfs_inode *m_inodes; /* active inode list */
302 struct list_head m_del_inodes; /* inodes to reclaim */
303 mutex_t m_ilock; /* inode list mutex */
304 uint m_ireclaims; /* count of calls to reclaim*/
305 uint m_readio_log; /* min read size log bytes */
306 uint m_readio_blocks; /* min read size blocks */
307 uint m_writeio_log; /* min write size log bytes */
308 uint m_writeio_blocks; /* min write size blocks */
309 struct log *m_log; /* log specific stuff */
310 int m_logbufs; /* number of log buffers */
311 int m_logbsize; /* size of each log buffer */
312 uint m_rsumlevels; /* rt summary levels */
313 uint m_rsumsize; /* size of rt summary, bytes */
314 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
315 struct xfs_inode *m_rsumip; /* pointer to summary inode */
316 struct xfs_inode *m_rootip; /* pointer to root directory */
317 struct xfs_quotainfo *m_quotainfo; /* disk quota information */
318 xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
319 xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
320 xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
321#define m_dev m_ddev_targp->pbr_dev
322 __uint8_t m_dircook_elog; /* log d-cookie entry bits */
323 __uint8_t m_blkbit_log; /* blocklog + NBBY */
324 __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
325 __uint8_t m_agno_log; /* log #ag's */
326 __uint8_t m_agino_log; /* #bits for agino in inum */
327 __uint8_t m_nreadaheads; /* #readahead buffers */
328 __uint16_t m_inode_cluster_size;/* min inode buf size */
329 uint m_blockmask; /* sb_blocksize-1 */
330 uint m_blockwsize; /* sb_blocksize in words */
331 uint m_blockwmask; /* blockwsize-1 */
332 uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
333 uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
334 uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
335 uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
336 uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
337 uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
338 uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
339 uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
340 uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
341 struct xfs_perag *m_perag; /* per-ag accounting info */
342 struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
343 sema_t m_growlock; /* growfs mutex */
344 int m_fixedfsid[2]; /* unchanged for life of FS */
345 uint m_dmevmask; /* DMI events for this FS */
346 uint m_flags; /* global mount flags */
347 uint m_attroffset; /* inode attribute offset */
348 uint m_dir_node_ents; /* #entries in a dir danode */
349 uint m_attr_node_ents; /* #entries in attr danode */
350 int m_ialloc_inos; /* inodes in inode allocation */
351 int m_ialloc_blks; /* blocks in inode allocation */
352 int m_litino; /* size of inode union area */
353 int m_inoalign_mask;/* mask sb_inoalignmt if used */
354 uint m_qflags; /* quota status flags */
355 xfs_trans_reservations_t m_reservations;/* precomputed res values */
356 __uint64_t m_maxicount; /* maximum inode count */
357 __uint64_t m_maxioffset; /* maximum inode offset */
358 __uint64_t m_resblks; /* total reserved blocks */
359 __uint64_t m_resblks_avail;/* available reserved blocks */
360#if XFS_BIG_INUMS
361 xfs_ino_t m_inoadd; /* add value for ino64_offset */
362#endif
363 int m_dalign; /* stripe unit */
364 int m_swidth; /* stripe width */
365 int m_sinoalign; /* stripe unit inode alignmnt */
366 int m_attr_magicpct;/* 37% of the blocksize */
367 int m_dir_magicpct; /* 37% of the dir blocksize */
368 __uint8_t m_mk_sharedro; /* mark shared ro on unmount */
369 __uint8_t m_inode_quiesce;/* call quiesce on new inodes.
370 field governed by m_ilock */
371 __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
372 __uint8_t m_dirversion; /* 1 or 2 */
373 xfs_dirops_t m_dirops; /* table of dir funcs */
374 int m_dirblksize; /* directory block sz--bytes */
375 int m_dirblkfsbs; /* directory block sz--fsbs */
376 xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
377 xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
378 xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
379 uint m_chsize; /* size of next field */
380 struct xfs_chash *m_chash; /* fs private inode per-cluster
381 * hash table */
382 struct xfs_dmops m_dm_ops; /* vector of DMI ops */
383 struct xfs_qmops m_qm_ops; /* vector of XQM ops */
384 struct xfs_ioops m_io_ops; /* vector of I/O ops */
385 atomic_t m_active_trans; /* number trans frozen */
386} xfs_mount_t;
387
388/*
389 * Flags for m_flags.
390 */
391#define XFS_MOUNT_WSYNC 0x00000001 /* for nfs - all metadata ops
392 must be synchronous except
393 for space allocations */
394#define XFS_MOUNT_INO64 0x00000002
395 /* 0x00000004 -- currently unused */
396 /* 0x00000008 -- currently unused */
397#define XFS_MOUNT_FS_SHUTDOWN 0x00000010 /* atomic stop of all filesystem
398 operations, typically for
399 disk errors in metadata */
400#define XFS_MOUNT_NOATIME 0x00000020 /* don't modify inode access
401 times on reads */
402#define XFS_MOUNT_RETERR 0x00000040 /* return alignment errors to
403 user */
404#define XFS_MOUNT_NOALIGN 0x00000080 /* turn off stripe alignment
405 allocations */
406 /* 0x00000100 -- currently unused */
407 /* 0x00000200 -- currently unused */
408#define XFS_MOUNT_NORECOVERY 0x00000400 /* no recovery - dirty fs */
409#define XFS_MOUNT_SHARED 0x00000800 /* shared mount */
410#define XFS_MOUNT_DFLT_IOSIZE 0x00001000 /* set default i/o size */
411#define XFS_MOUNT_OSYNCISOSYNC 0x00002000 /* o_sync is REALLY o_sync */
412 /* osyncisdsync is now default*/
413#define XFS_MOUNT_32BITINODES 0x00004000 /* do not create inodes above
414 * 32 bits in size */
415#define XFS_MOUNT_32BITINOOPT 0x00008000 /* saved mount option state */
416#define XFS_MOUNT_NOUUID 0x00010000 /* ignore uuid during mount */
417#define XFS_MOUNT_NOLOGFLUSH 0x00020000
418#define XFS_MOUNT_IDELETE 0x00040000 /* delete empty inode clusters*/
419#define XFS_MOUNT_SWALLOC 0x00080000 /* turn on stripe width
420 * allocation */
421#define XFS_MOUNT_IHASHSIZE 0x00100000 /* inode hash table size */
422#define XFS_MOUNT_DIRSYNC 0x00200000 /* synchronous directory ops */
423
424/*
425 * Default minimum read and write sizes.
426 */
427#define XFS_READIO_LOG_LARGE 16
428#define XFS_WRITEIO_LOG_LARGE 16
429
430/*
431 * Max and min values for UIO and mount-option defined I/O sizes;
432 * min value can't be less than a page. Currently unused.
433 */
434#define XFS_MAX_IO_LOG 16 /* 64K */
435#define XFS_MIN_IO_LOG PAGE_SHIFT
436
437/*
438 * Synchronous read and write sizes. This should be
439 * better for NFSv2 wsync filesystems.
440 */
441#define XFS_WSYNC_READIO_LOG 15 /* 32K */
442#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
443
444#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
445
446#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
447#define xfs_force_shutdown(m,f) \
448 VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__)
449
450/*
451 * Flags sent to xfs_force_shutdown.
452 */
453#define XFS_METADATA_IO_ERROR 0x1
454#define XFS_LOG_IO_ERROR 0x2
455#define XFS_FORCE_UMOUNT 0x4
456#define XFS_CORRUPT_INCORE 0x8 /* Corrupt in-memory data structures */
457#define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */
458
459/*
460 * xflags for xfs_syncsub
461 */
462#define XFS_XSYNC_RELOC 0x01
463
464/*
465 * Flags for xfs_mountfs
466 */
467#define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
468#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
469#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
470 /* log recovery */
471#define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
472
473/*
474 * Macros for getting from mount to vfs and back.
475 */
476#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MTOVFS)
477struct vfs *xfs_mtovfs(xfs_mount_t *mp);
478#define XFS_MTOVFS(mp) xfs_mtovfs(mp)
479#else
480#define XFS_MTOVFS(mp) (bhvtovfs(&(mp)->m_bhv))
481#endif
482#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BHVTOM)
483xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp);
484#define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
485#else
486#define XFS_BHVTOM(bdp) ((xfs_mount_t *)BHV_PDATA(bdp))
487#endif
488#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_VFSTOM)
489xfs_mount_t *xfs_vfstom(vfs_t *vfs);
490#define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
491#else
492#define XFS_VFSTOM(vfs) \
493 (XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops)))
494#endif
495
496
497/*
498 * Moved here from xfs_ag.h to avoid reordering header files
499 */
500
501#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGNO)
502xfs_agnumber_t xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d);
503#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
504#else
505
506static inline xfs_agnumber_t XFS_DADDR_TO_AGNO(xfs_mount_t *mp, xfs_daddr_t d)
507{
508 d = XFS_BB_TO_FSBT(mp, d);
509 do_div(d, mp->m_sb.sb_agblocks);
510 return (xfs_agnumber_t) d;
511}
512
513#endif
514#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_AGBNO)
515xfs_agblock_t xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d);
516#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
517#else
518
519static inline xfs_agblock_t XFS_DADDR_TO_AGBNO(xfs_mount_t *mp, xfs_daddr_t d)
520{
521 d = XFS_BB_TO_FSBT(mp, d);
522 return (xfs_agblock_t) do_div(d, mp->m_sb.sb_agblocks);
523}
524
525#endif
526
527/*
528 * This structure is for use by the xfs_mod_incore_sb_batch() routine.
529 */
530typedef struct xfs_mod_sb {
531 xfs_sb_field_t msb_field; /* Field to modify, see below */
532 int msb_delta; /* Change to make to specified field */
533} xfs_mod_sb_t;
534
535#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock), PINOD)
536#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
537#define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
538#define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
539
540extern xfs_mount_t *xfs_mount_init(void);
541extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
542extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
543extern int xfs_mountfs(struct vfs *, xfs_mount_t *mp, int);
544
545extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
546extern void xfs_unmountfs_wait(xfs_mount_t *);
547extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *);
548extern int xfs_unmountfs_writesb(xfs_mount_t *);
549extern int xfs_unmount_flush(xfs_mount_t *, int);
550extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
551extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
552 uint, int);
553extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
554extern int xfs_readsb(xfs_mount_t *mp);
555extern void xfs_freesb(xfs_mount_t *);
556extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
557extern int xfs_syncsub(xfs_mount_t *, int, int, int *);
558extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
559extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);
560
561extern struct vfsops xfs_vfsops;
562extern struct vnodeops xfs_vnodeops;
563
564extern struct xfs_dmops xfs_dmcore_stub;
565extern struct xfs_qmops xfs_qmcore_stub;
566extern struct xfs_ioops xfs_iocore_xfs;
567
568extern int xfs_init(void);
569extern void xfs_cleanup(void);
570
571#endif /* __KERNEL__ */
572
573#endif /* __XFS_MOUNT_H__ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 21:52:05 -0500