1/* $OpenBSD: ffs_extern.h,v 1.51 2024/10/08 02:58:26 jsg Exp $ */
2/* $NetBSD: ffs_extern.h,v 1.4 1996/02/09 22:22:22 christos Exp $ */
3
4/*
5 * Copyright (c) 1991, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)ffs_extern.h 8.3 (Berkeley) 4/16/94
33 */
34
35#define FFS_CLUSTERREAD 1 /* cluster reading enabled */
36#define FFS_CLUSTERWRITE 2 /* cluster writing enabled */
37#define FFS_REALLOCBLKS 3 /* block reallocation enabled */
38#define FFS_ASYNCFREE 4 /* asynchronous block freeing enabled */
39#define FFS_MAX_SOFTDEPS 5 /* maximum structs before slowdown */
40#define FFS_SD_TICKDELAY 6 /* ticks to pause during slowdown */
41#define FFS_SD_WORKLIST_PUSH 7 /* # of worklist cleanups */
42#define FFS_SD_BLK_LIMIT_PUSH 8 /* # of times block limit neared */
43#define FFS_SD_INO_LIMIT_PUSH 9 /* # of times inode limit neared */
44#define FFS_SD_BLK_LIMIT_HIT 10 /* # of times block slowdown imposed */
45#define FFS_SD_INO_LIMIT_HIT 11 /* # of times inode slowdown imposed */
46#define FFS_SD_SYNC_LIMIT_HIT 12 /* # of synchronous slowdowns imposed */
47#define FFS_SD_INDIR_BLK_PTRS 13 /* bufs redirtied as indir ptrs not written */
48#define FFS_SD_INODE_BITMAP 14 /* bufs redirtied as inode bitmap not written */
49#define FFS_SD_DIRECT_BLK_PTRS 15 /* bufs redirtied as direct ptrs not written */
50#define FFS_SD_DIR_ENTRY 16 /* bufs redirtied as dir entry cannot write */
51#define FFS_DIRHASH_DIRSIZE 17 /* min directory size, in bytes */
52#define FFS_DIRHASH_MAXMEM 18 /* max kvm to use, in bytes */
53#define FFS_DIRHASH_MEM 19 /* current mem usage, in bytes */
54#define FFS_MAXID 20 /* number of valid ffs ids */
55
56#define FFS_NAMES { \
57 { 0, 0 }, \
58 { 0, 0 }, \
59 { 0, 0 }, \
60 { 0, 0 }, \
61 { 0, 0 }, \
62 { 0, 0 }, \
63 { 0, 0 }, \
64 { 0, 0 }, \
65 { 0, 0 }, \
66 { 0, 0 }, \
67 { 0, 0 }, \
68 { 0, 0 }, \
69 { 0, 0 }, \
70 { 0, 0 }, \
71 { 0, 0 }, \
72 { 0, 0 }, \
73 { 0, 0 }, \
74 { "dirhash_dirsize", CTLTYPE_INT }, \
75 { "dirhash_maxmem", CTLTYPE_INT }, \
76 { "dirhash_mem", CTLTYPE_INT }, \
77}
78
79struct buf;
80struct fid;
81struct fs;
82struct inode;
83struct mount;
84struct nameidata;
85struct proc;
86struct statfs;
87struct timeval;
88struct ucred;
89struct ufsmount;
90struct vfsconf;
91struct uio;
92struct vnode;
93struct mbuf;
94struct cg;
95struct vop_vfree_args;
96
97extern const struct vops ffs_vops;
98extern const struct vops ffs_specvops;
99extern const struct vops ffs_fifovops;
100
101/* ffs_alloc.c */
102int ffs_alloc(struct inode *, daddr_t, daddr_t , int, struct ucred *,
103 daddr_t *);
104int ffs_realloccg(struct inode *, daddr_t, daddr_t, int, int ,
105 struct ucred *, struct buf **, daddr_t *);
106int ffs_inode_alloc(struct inode *, mode_t, struct ucred *, struct vnode **);
107int ffs_inode_free(struct inode *, ufsino_t, mode_t);
108int ffs_freefile(struct inode *, ufsino_t, mode_t);
109
110int32_t ffs1_blkpref(struct inode *, daddr_t, int, int32_t *);
111#ifdef FFS2
112int64_t ffs2_blkpref(struct inode *, daddr_t, int, int64_t *);
113#endif
114void ffs_blkfree(struct inode *, daddr_t, long);
115void ffs_clusteracct(struct fs *, struct cg *, daddr_t, int);
116
117/* ffs_balloc.c */
118int ffs_balloc(struct inode *, off_t, int, struct ucred *, int, struct buf **);
119
120/* ffs_inode.c */
121int ffs_init(struct vfsconf *);
122int ffs_update(struct inode *, int);
123int ffs_truncate(struct inode *, off_t, int, struct ucred *);
124
125/* ffs_subr.c */
126int ffs_bufatoff(struct inode *, off_t, char **, struct buf **);
127void ffs_fragacct(struct fs *, int, int32_t[], int);
128int ffs_isfreeblock(struct fs *, u_char *, daddr_t);
129int ffs_isblock(struct fs *, u_char *, daddr_t);
130void ffs_clrblock(struct fs *, u_char *, daddr_t);
131void ffs_setblock(struct fs *, u_char *, daddr_t);
132int ffs_vinit(struct mount *, struct vnode **);
133
134/* ffs_vfsops.c */
135int ffs_mountroot(void);
136int ffs_mount(struct mount *, const char *, void *, struct nameidata *,
137 struct proc *);
138int ffs_reload(struct mount *, struct ucred *, struct proc *);
139int ffs_mountfs(struct vnode *, struct mount *, struct proc *);
140int ffs_oldfscompat(struct fs *);
141int ffs_unmount(struct mount *, int, struct proc *);
142int ffs_flushfiles(struct mount *, int, struct proc *);
143int ffs_statfs(struct mount *, struct statfs *, struct proc *);
144int ffs_sync(struct mount *, int, int, struct ucred *, struct proc *);
145int ffs_vget(struct mount *, ino_t, struct vnode **);
146int ffs_fhtovp(struct mount *, struct fid *, struct vnode **);
147int ffs_vptofh(struct vnode *, struct fid *);
148int ffs_sysctl(int *, u_int, void *, size_t *, void *, size_t,
149 struct proc *);
150int ffs_sbupdate(struct ufsmount *, int);
151
152/* ffs_vnops.c */
153int ffs_read(void *);
154int ffs_write(void *);
155int ffs_fsync(void *);
156int ffs_reclaim(void *);
157int ffsfifo_reclaim(void *);
158
159/*
160 * Soft dependency function prototypes.
161 */
162
163struct vop_vfree_args;
164struct vop_fsync_args;
165
166extern struct pool ffs_ino_pool; /* memory pool for inodes */
167extern struct pool ffs_dinode1_pool; /* memory pool for UFS1 dinodes */
168#ifdef FFS2
169extern struct pool ffs_dinode2_pool; /* memory pool for UFS2 dinodes */
170#endif