FreeBSD/Linux Kernel Cross Reference
sys/ufs/ufs/ufsmount.h
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1982, 1986, 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95
32 * $FreeBSD$
33 */
34
35 #ifndef _UFS_UFS_UFSMOUNT_H_
36 #define _UFS_UFS_UFSMOUNT_H_
37
38 /*
39 * Arguments to mount UFS-based filesystems
40 */
41 struct ufs_args {
42 char *fspec; /* block special device to mount */
43 struct oexport_args export; /* network export information */
44 };
45
46 #include <sys/_task.h>
47
48 #ifdef _KERNEL
49 #ifdef MALLOC_DECLARE
50 MALLOC_DECLARE(M_UFSMNT);
51 MALLOC_DECLARE(M_TRIM);
52 #endif
53 #endif /* _KERNEL */
54
55 struct buf;
56 struct inode;
57 struct nameidata;
58 struct taskqueue;
59 struct timeval;
60 struct ucred;
61 struct uio;
62 struct vnode;
63 struct ufs_extattr_per_mount;
64 struct jblocks;
65 struct inodedep;
66
67 TAILQ_HEAD(inodedeplst, inodedep);
68 LIST_HEAD(bmsafemaphd, bmsafemap);
69 LIST_HEAD(trimlist_hashhead, ffs_blkfree_trim_params);
70
71 #include <sys/_lock.h>
72 #include <sys/_mutex.h>
73 #include <sys/_sx.h>
74
75 /*
76 * This structure describes the UFS specific mount structure data.
77 * The function operators are used to support different versions of
78 * UFS (UFS1, UFS2, etc).
79 *
80 * Lock reference:
81 * c - set at allocation then constant until freed
82 * i - ufsmount interlock (UFS_LOCK / UFS_UNLOCK)
83 * q - associated quota file is locked
84 * r - ref to parent mount structure is held (vfs_busy / vfs_unbusy)
85 */
86 struct ufsmount {
87 struct mount *um_mountp; /* (r) filesystem vfs struct */
88 struct cdev *um_dev; /* (r) device mounted */
89 struct g_consumer *um_cp; /* (r) GEOM access point */
90 struct bufobj *um_bo; /* (r) Buffer cache object */
91 struct vnode *um_odevvp; /* (r) devfs dev vnode */
92 struct vnode *um_devvp; /* (r) mntfs private vnode */
93 u_long um_fstype; /* (c) type of filesystem */
94 struct fs *um_fs; /* (r) pointer to superblock */
95 struct ufs_extattr_per_mount um_extattr; /* (c) extended attrs */
96 u_long um_nindir; /* (c) indirect ptrs per blk */
97 u_long um_bptrtodb; /* (c) indir disk block ptr */
98 u_long um_seqinc; /* (c) inc between seq blocks */
99 u_long um_bsize; /* (c) fs block size */
100 uint64_t um_maxsymlinklen; /* (c) max size of short
101 symlink */
102 struct mtx um_lock; /* (c) Protects ufsmount & fs */
103 struct sx um_checkpath_lock; /* (c) Protects ufs_checkpath()
104 result */
105 struct mount_softdeps *um_softdep; /* (c) softdep mgmt structure */
106 struct vnode *um_quotas[MAXQUOTAS]; /* (q) pointer to quota files */
107 struct ucred *um_cred[MAXQUOTAS]; /* (q) quota file access cred */
108 time_t um_btime[MAXQUOTAS]; /* (q) block quota time limit */
109 time_t um_itime[MAXQUOTAS]; /* (q) inode quota time limit */
110 char um_qflags[MAXQUOTAS]; /* (i) quota specific flags */
111 int64_t um_savedmaxfilesize; /* (c) track maxfilesize */
112 u_int um_flags; /* (i) filesystem flags */
113 struct timeval um_last_fullmsg; /* (i) last full msg time */
114 int um_secs_fullmsg; /* (i) seconds since full msg */
115 struct timeval um_last_integritymsg; /* (i) last integrity msg */
116 int um_secs_integritymsg; /* (i) secs since integ msg */
117 u_int um_trim_inflight; /* (i) outstanding trim count */
118 u_int um_trim_inflight_blks; /* (i) outstanding trim blks */
119 u_long um_trim_total; /* (i) total trim count */
120 u_long um_trim_total_blks; /* (i) total trim block count */
121 struct taskqueue *um_trim_tq; /* (c) trim request queue */
122 struct trimlist_hashhead *um_trimhash; /* (i) trimlist hash table */
123 u_long um_trimlisthashsize; /* (i) trim hash table size-1 */
124 /* (c) - below function ptrs */
125 int (*um_balloc)(struct vnode *, off_t, int, struct ucred *,
126 int, struct buf **);
127 int (*um_blkatoff)(struct vnode *, off_t, char **, struct buf **);
128 int (*um_truncate)(struct vnode *, off_t, int, struct ucred *);
129 int (*um_update)(struct vnode *, int);
130 int (*um_valloc)(struct vnode *, int, struct ucred *,
131 struct vnode **);
132 int (*um_vfree)(struct vnode *, ino_t, int);
133 void (*um_ifree)(struct ufsmount *, struct inode *);
134 int (*um_rdonly)(struct inode *);
135 void (*um_snapgone)(struct inode *);
136 int (*um_check_blkno)(struct mount *, ino_t, daddr_t, int);
137 };
138
139 /*
140 * filesystem flags
141 */
142 #define UM_CANDELETE 0x00000001 /* devvp supports TRIM */
143 #define UM_WRITESUSPENDED 0x00000002 /* suspension in progress */
144 #define UM_CANSPEEDUP 0x00000004 /* devvp supports SPEEDUP */
145 #define UM_FSFAIL_CLEANUP 0x00000008 /* need cleanup after
146 unrecoverable error */
147 /*
148 * function prototypes
149 */
150 #define UFS_BALLOC(aa, bb, cc, dd, ee, ff) \
151 VFSTOUFS((aa)->v_mount)->um_balloc(aa, bb, cc, dd, ee, ff)
152 #define UFS_BLKATOFF(aa, bb, cc, dd) \
153 VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
154 #define UFS_TRUNCATE(aa, bb, cc, dd) \
155 VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd)
156 #define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb)
157 #define UFS_VALLOC(aa, bb, cc, dd) \
158 VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
159 #define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc)
160 #define UFS_IFREE(aa, bb) ((aa)->um_ifree(aa, bb))
161 #define UFS_RDONLY(aa) (ITOUMP(aa)->um_rdonly(aa))
162 #define UFS_SNAPGONE(aa) (ITOUMP(aa)->um_snapgone(aa))
163 #define UFS_CHECK_BLKNO(aa, bb, cc, dd) \
164 (VFSTOUFS(aa)->um_check_blkno == NULL ? 0 : \
165 VFSTOUFS(aa)->um_check_blkno(aa, bb, cc, dd))
166
167 #define UFS_LOCK(aa) mtx_lock(&(aa)->um_lock)
168 #define UFS_UNLOCK(aa) mtx_unlock(&(aa)->um_lock)
169 #define UFS_MTX(aa) (&(aa)->um_lock)
170
171 /*
172 * Filesystem types
173 */
174 #define UFS1 1
175 #define UFS2 2
176
177 /*
178 * Flags describing the state of quotas.
179 */
180 #define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
181 #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
182 #define QTF_64BIT 0x04 /* 64-bit quota file */
183
184 /* Convert mount ptr to ufsmount ptr. */
185 #define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data))
186 #define UFSTOVFS(ump) (ump)->um_mountp
187
188 /*
189 * Macros to access filesystem parameters in the ufsmount structure.
190 * Used by ufs_bmap.
191 */
192 #define MNINDIR(ump) ((ump)->um_nindir)
193 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
194 #define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
195
196 /* true if old FS format...*/
197 #define OFSFMT(vp) (VFSTOUFS((vp)->v_mount)->um_maxsymlinklen <= 0)
198
199 #endif
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