Annotation of sys/ufs/ffs/ffs_extern.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ffs_extern.h,v 1.32 2007/06/01 20:23:25 pedro 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: { "doclusterread", CTLTYPE_INT }, \
59: { "doclusterwrite", CTLTYPE_INT }, \
60: { "doreallocblks", CTLTYPE_INT }, \
61: { "doasyncfree", CTLTYPE_INT }, \
62: { "max_softdeps", CTLTYPE_INT }, \
63: { "sd_tickdelay", CTLTYPE_INT }, \
64: { "sd_worklist_push", CTLTYPE_INT }, \
65: { "sd_blk_limit_push", CTLTYPE_INT }, \
66: { "sd_ino_limit_push", CTLTYPE_INT }, \
67: { "sd_blk_limit_hit", CTLTYPE_INT }, \
68: { "sd_ino_limit_hit", CTLTYPE_INT }, \
69: { "sd_sync_limit_hit", CTLTYPE_INT }, \
70: { "sd_indir_blk_ptrs", CTLTYPE_INT }, \
71: { "sd_inode_bitmap", CTLTYPE_INT }, \
72: { "sd_direct_blk_ptrs", CTLTYPE_INT }, \
73: { "sd_dir_entry", CTLTYPE_INT }, \
74: { "dirhash_dirsize", CTLTYPE_INT }, \
75: { "dirhash_maxmem", CTLTYPE_INT }, \
76: { "dirhash_mem", CTLTYPE_INT }, \
77: }
78:
79: struct buf;
80: struct fid;
81: struct fs;
82: struct inode;
83: struct mount;
84: struct nameidata;
85: struct proc;
86: struct statfs;
87: struct timeval;
88: struct ucred;
89: struct ufsmount;
90: struct vfsconf;
91: struct uio;
92: struct vnode;
93: struct mbuf;
94: struct cg;
95: struct vop_vfree_args;
96:
97: __BEGIN_DECLS
98:
99: /* ffs_alloc.c */
100: int ffs_alloc(struct inode *, daddr_t, daddr_t , int, struct ucred *,
101: daddr_t *);
102: int ffs_realloccg(struct inode *, daddr_t, daddr_t, int, int ,
103: struct ucred *, struct buf **, daddr_t *);
104: int ffs_reallocblks(void *);
105: int ffs_inode_alloc(struct inode *, mode_t, struct ucred *, struct vnode **);
106: int ffs_inode_free(struct inode *, ino_t, mode_t);
107: int ffs_freefile(struct inode *, ino_t, mode_t);
108:
109: int32_t ffs1_blkpref(struct inode *, daddr_t, int, int32_t *);
110: #ifdef FFS2
111: int64_t ffs2_blkpref(struct inode *, daddr_t, int, int64_t *);
112: #endif
113: void ffs_blkfree(struct inode *, daddr64_t, long);
114: void ffs_clusteracct(struct fs *, struct cg *, daddr_t, int);
115:
116: /* ffs_balloc.c */
117: int ffs_balloc(struct inode *, off_t, int, struct ucred *, int, struct buf **);
118:
119: /* ffs_inode.c */
120: int ffs_init(struct vfsconf *);
121: int ffs_update(struct inode *, struct timespec *, struct timespec *, int);
122: int ffs_truncate(struct inode *, off_t, int, struct ucred *);
123:
124: /* ffs_subr.c */
125: int ffs_bufatoff(struct inode *, off_t, char **, struct buf **);
126: void ffs_fragacct(struct fs *, int, int32_t[], int);
127: #ifdef DIAGNOSTIC
128: void ffs_checkoverlap(struct buf *, struct inode *);
129: #endif
130: int ffs_isfreeblock(struct fs *, unsigned char *, daddr_t);
131: int ffs_isblock(struct fs *, unsigned char *, daddr_t);
132: void ffs_clrblock(struct fs *, u_char *, daddr_t);
133: void ffs_setblock(struct fs *, unsigned char *, daddr_t);
134:
135: /* ffs_vfsops.c */
136: int ffs_mountroot(void);
137: int ffs_mount(struct mount *, const char *, void *, struct nameidata *,
138: struct proc *);
139: int ffs_reload(struct mount *, struct ucred *, struct proc *);
140: int ffs_mountfs(struct vnode *, struct mount *, struct proc *);
141: int ffs_oldfscompat(struct fs *);
142: int ffs_unmount(struct mount *, int, struct proc *);
143: int ffs_flushfiles(struct mount *, int, struct proc *);
144: int ffs_statfs(struct mount *, struct statfs *, struct proc *);
145: int ffs_sync(struct mount *, int, struct ucred *, struct proc *);
146: int ffs_vget(struct mount *, ino_t, struct vnode **);
147: int ffs_fhtovp(struct mount *, struct fid *, struct vnode **);
148: int ffs_vptofh(struct vnode *, struct fid *);
149: int ffs_sysctl(int *, u_int, void *, size_t *, void *, size_t,
150: struct proc *);
151: int ffs_sbupdate(struct ufsmount *, int);
152: int ffs_cgupdate(struct ufsmount *, int);
153:
154: /* ffs_vnops.c */
155: int ffs_read(void *);
156: int ffs_write(void *);
157: int ffs_fsync(void *);
158: int ffs_reclaim(void *);
159: int ffsfifo_reclaim(void *);
160:
161: /*
162: * Soft dependency function prototypes.
163: */
164:
165: struct vop_vfree_args;
166: struct vop_fsync_args;
167:
168: void softdep_initialize(void);
169: int softdep_process_worklist(struct mount *);
170: int softdep_mount(struct vnode *, struct mount *, struct fs *,
171: struct ucred *);
172: int softdep_flushworklist(struct mount *, int *, struct proc *);
173: int softdep_flushfiles(struct mount *, int, struct proc *);
174: void softdep_update_inodeblock(struct inode *, struct buf *, int);
175: void softdep_load_inodeblock(struct inode *);
176: void softdep_freefile(struct vnode *, ino_t, mode_t);
177: void softdep_setup_freeblocks(struct inode *, off_t);
178: void softdep_setup_inomapdep(struct buf *, struct inode *, ino_t);
179: void softdep_setup_blkmapdep(struct buf *, struct fs *, daddr_t);
180: void softdep_setup_allocdirect(struct inode *, daddr64_t, daddr_t,
181: daddr_t, long, long, struct buf *);
182: void softdep_setup_allocindir_meta(struct buf *, struct inode *,
183: struct buf *, int, daddr_t);
184: void softdep_setup_allocindir_page(struct inode *, daddr64_t,
185: struct buf *, int, daddr_t, daddr_t, struct buf *);
186: void softdep_fsync_mountdev(struct vnode *, int);
187: int softdep_sync_metadata(struct vop_fsync_args *);
188: int softdep_fsync(struct vnode *);
189: __END_DECLS
190:
191: extern int (**ffs_vnodeop_p)(void *);
192: extern int (**ffs_specop_p)(void *);
193: #ifdef FIFO
194: extern int (**ffs_fifoop_p)(void *);
195: #define FFS_FIFOOPS ffs_fifoop_p
196: #else
197: #define FFS_FIFOOPS NULL
198: #endif
199:
200: extern struct pool ffs_ino_pool; /* memory pool for inodes */
201: extern struct pool ffs_dinode1_pool; /* memory pool for UFS1 dinodes */
202: #ifdef FFS2
203: extern struct pool ffs_dinode2_pool; /* memory pool for UFS2 dinodes */
204: #endif
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