lfs.h revision 1.178 1 1.178 dholland /* $NetBSD: lfs.h,v 1.178 2015/08/12 18:27:01 dholland Exp $ */
2 1.148 dholland
3 1.148 dholland /* from NetBSD: dinode.h,v 1.22 2013/01/22 09:39:18 dholland Exp */
4 1.148 dholland /* from NetBSD: dir.h,v 1.21 2009/07/22 04:49:19 dholland Exp */
5 1.6 mycroft
6 1.1 mycroft /*-
7 1.46 perseant * Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
8 1.11 perseant * All rights reserved.
9 1.11 perseant *
10 1.11 perseant * This code is derived from software contributed to The NetBSD Foundation
11 1.11 perseant * by Konrad E. Schroder <perseant (at) hhhh.org>.
12 1.11 perseant *
13 1.11 perseant * Redistribution and use in source and binary forms, with or without
14 1.11 perseant * modification, are permitted provided that the following conditions
15 1.11 perseant * are met:
16 1.11 perseant * 1. Redistributions of source code must retain the above copyright
17 1.11 perseant * notice, this list of conditions and the following disclaimer.
18 1.11 perseant * 2. Redistributions in binary form must reproduce the above copyright
19 1.11 perseant * notice, this list of conditions and the following disclaimer in the
20 1.11 perseant * documentation and/or other materials provided with the distribution.
21 1.11 perseant *
22 1.11 perseant * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 1.11 perseant * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 1.11 perseant * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 1.11 perseant * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 1.11 perseant * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 1.11 perseant * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 1.11 perseant * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 1.11 perseant * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 1.11 perseant * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 1.11 perseant * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 1.11 perseant * POSSIBILITY OF SUCH DAMAGE.
33 1.11 perseant */
34 1.11 perseant /*-
35 1.1 mycroft * Copyright (c) 1991, 1993
36 1.1 mycroft * The Regents of the University of California. All rights reserved.
37 1.1 mycroft *
38 1.1 mycroft * Redistribution and use in source and binary forms, with or without
39 1.1 mycroft * modification, are permitted provided that the following conditions
40 1.1 mycroft * are met:
41 1.1 mycroft * 1. Redistributions of source code must retain the above copyright
42 1.1 mycroft * notice, this list of conditions and the following disclaimer.
43 1.1 mycroft * 2. Redistributions in binary form must reproduce the above copyright
44 1.1 mycroft * notice, this list of conditions and the following disclaimer in the
45 1.1 mycroft * documentation and/or other materials provided with the distribution.
46 1.69 agc * 3. Neither the name of the University nor the names of its contributors
47 1.1 mycroft * may be used to endorse or promote products derived from this software
48 1.1 mycroft * without specific prior written permission.
49 1.1 mycroft *
50 1.1 mycroft * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 1.1 mycroft * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 1.1 mycroft * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 1.1 mycroft * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 1.1 mycroft * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 1.1 mycroft * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 1.1 mycroft * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 1.1 mycroft * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 1.1 mycroft * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 1.1 mycroft * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 1.1 mycroft * SUCH DAMAGE.
61 1.1 mycroft *
62 1.9 fvdl * @(#)lfs.h 8.9 (Berkeley) 5/8/95
63 1.1 mycroft */
64 1.148 dholland /*
65 1.148 dholland * Copyright (c) 2002 Networks Associates Technology, Inc.
66 1.148 dholland * All rights reserved.
67 1.148 dholland *
68 1.148 dholland * This software was developed for the FreeBSD Project by Marshall
69 1.148 dholland * Kirk McKusick and Network Associates Laboratories, the Security
70 1.148 dholland * Research Division of Network Associates, Inc. under DARPA/SPAWAR
71 1.148 dholland * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
72 1.148 dholland * research program
73 1.148 dholland *
74 1.148 dholland * Copyright (c) 1982, 1989, 1993
75 1.148 dholland * The Regents of the University of California. All rights reserved.
76 1.148 dholland * (c) UNIX System Laboratories, Inc.
77 1.148 dholland * All or some portions of this file are derived from material licensed
78 1.148 dholland * to the University of California by American Telephone and Telegraph
79 1.148 dholland * Co. or Unix System Laboratories, Inc. and are reproduced herein with
80 1.148 dholland * the permission of UNIX System Laboratories, Inc.
81 1.148 dholland *
82 1.148 dholland * Redistribution and use in source and binary forms, with or without
83 1.148 dholland * modification, are permitted provided that the following conditions
84 1.148 dholland * are met:
85 1.148 dholland * 1. Redistributions of source code must retain the above copyright
86 1.148 dholland * notice, this list of conditions and the following disclaimer.
87 1.148 dholland * 2. Redistributions in binary form must reproduce the above copyright
88 1.148 dholland * notice, this list of conditions and the following disclaimer in the
89 1.148 dholland * documentation and/or other materials provided with the distribution.
90 1.148 dholland * 3. Neither the name of the University nor the names of its contributors
91 1.148 dholland * may be used to endorse or promote products derived from this software
92 1.148 dholland * without specific prior written permission.
93 1.148 dholland *
94 1.148 dholland * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
95 1.148 dholland * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 1.148 dholland * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
97 1.148 dholland * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
98 1.148 dholland * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
99 1.148 dholland * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
100 1.148 dholland * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
101 1.148 dholland * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
102 1.148 dholland * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
103 1.148 dholland * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
104 1.148 dholland * SUCH DAMAGE.
105 1.148 dholland *
106 1.148 dholland * @(#)dinode.h 8.9 (Berkeley) 3/29/95
107 1.148 dholland */
108 1.148 dholland /*
109 1.148 dholland * Copyright (c) 1982, 1986, 1989, 1993
110 1.148 dholland * The Regents of the University of California. All rights reserved.
111 1.148 dholland * (c) UNIX System Laboratories, Inc.
112 1.148 dholland * All or some portions of this file are derived from material licensed
113 1.148 dholland * to the University of California by American Telephone and Telegraph
114 1.148 dholland * Co. or Unix System Laboratories, Inc. and are reproduced herein with
115 1.148 dholland * the permission of UNIX System Laboratories, Inc.
116 1.148 dholland *
117 1.148 dholland * Redistribution and use in source and binary forms, with or without
118 1.148 dholland * modification, are permitted provided that the following conditions
119 1.148 dholland * are met:
120 1.148 dholland * 1. Redistributions of source code must retain the above copyright
121 1.148 dholland * notice, this list of conditions and the following disclaimer.
122 1.148 dholland * 2. Redistributions in binary form must reproduce the above copyright
123 1.148 dholland * notice, this list of conditions and the following disclaimer in the
124 1.148 dholland * documentation and/or other materials provided with the distribution.
125 1.148 dholland * 3. Neither the name of the University nor the names of its contributors
126 1.148 dholland * may be used to endorse or promote products derived from this software
127 1.148 dholland * without specific prior written permission.
128 1.148 dholland *
129 1.148 dholland * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
130 1.148 dholland * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
131 1.148 dholland * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
132 1.148 dholland * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
133 1.148 dholland * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
134 1.148 dholland * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
135 1.148 dholland * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
136 1.148 dholland * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
137 1.148 dholland * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
138 1.148 dholland * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
139 1.148 dholland * SUCH DAMAGE.
140 1.148 dholland *
141 1.148 dholland * @(#)dir.h 8.5 (Berkeley) 4/27/95
142 1.148 dholland */
143 1.1 mycroft
144 1.149 dholland /*
145 1.149 dholland * NOTE: COORDINATE ON-DISK FORMAT CHANGES WITH THE FREEBSD PROJECT.
146 1.149 dholland */
147 1.149 dholland
148 1.42 matt #ifndef _UFS_LFS_LFS_H_
149 1.42 matt #define _UFS_LFS_LFS_H_
150 1.42 matt
151 1.177 dholland #if !defined(_KERNEL) && !defined(_STANDALONE)
152 1.177 dholland #include <stddef.h> /* for offsetof */
153 1.177 dholland #endif
154 1.177 dholland
155 1.118 ad #include <sys/rwlock.h>
156 1.123 ad #include <sys/mutex.h>
157 1.124 ad #include <sys/queue.h>
158 1.124 ad #include <sys/condvar.h>
159 1.140 dholland #include <sys/mount.h>
160 1.140 dholland #include <sys/pool.h>
161 1.139 dholland
162 1.11 perseant /*
163 1.11 perseant * Compile-time options for LFS.
164 1.11 perseant */
165 1.61 perseant #define LFS_IFIND_RETRIES 16
166 1.61 perseant #define LFS_LOGLENGTH 1024 /* size of debugging log */
167 1.61 perseant #define LFS_MAX_ACTIVE 10 /* Dirty segments before ckp forced */
168 1.39 perseant
169 1.11 perseant /*
170 1.61 perseant * Fixed filesystem layout parameters
171 1.11 perseant */
172 1.61 perseant #define LFS_LABELPAD 8192 /* LFS label size */
173 1.61 perseant #define LFS_SBPAD 8192 /* LFS superblock size */
174 1.61 perseant
175 1.61 perseant #define LFS_UNUSED_INUM 0 /* 0: out of band inode number */
176 1.61 perseant #define LFS_IFILE_INUM 1 /* 1: IFILE inode number */
177 1.61 perseant /* 2: Root inode number */
178 1.141 dholland #define LFS_LOSTFOUNDINO 3 /* 3: lost+found inode number */
179 1.61 perseant #define LFS_FIRST_INUM 4 /* 4: first free inode number */
180 1.61 perseant
181 1.145 dholland /*
182 1.145 dholland * The root inode is the root of the file system. Inode 0 can't be used for
183 1.145 dholland * normal purposes and historically bad blocks were linked to inode 1, thus
184 1.145 dholland * the root inode is 2. (Inode 1 is no longer used for this purpose, however
185 1.145 dholland * numerous dump tapes make this assumption, so we are stuck with it).
186 1.145 dholland */
187 1.145 dholland #define ULFS_ROOTINO ((ino_t)2)
188 1.145 dholland
189 1.145 dholland /*
190 1.145 dholland * The Whiteout inode# is a dummy non-zero inode number which will
191 1.145 dholland * never be allocated to a real file. It is used as a place holder
192 1.145 dholland * in the directory entry which has been tagged as a LFS_DT_WHT entry.
193 1.145 dholland * See the comments about ULFS_ROOTINO above.
194 1.145 dholland */
195 1.145 dholland #define ULFS_WINO ((ino_t)1)
196 1.145 dholland
197 1.145 dholland
198 1.61 perseant #define LFS_V1_SUMMARY_SIZE 512 /* V1 fixed summary size */
199 1.61 perseant #define LFS_DFL_SUMMARY_SIZE 512 /* Default summary size */
200 1.61 perseant
201 1.92 christos #define LFS_MAXNAMLEN 255 /* maximum name length in a dir */
202 1.92 christos
203 1.140 dholland #define ULFS_NXADDR 2
204 1.140 dholland #define ULFS_NDADDR 12 /* Direct addresses in inode. */
205 1.140 dholland #define ULFS_NIADDR 3 /* Indirect addresses in inode. */
206 1.140 dholland
207 1.140 dholland /*
208 1.140 dholland * Adjustable filesystem parameters
209 1.140 dholland */
210 1.37 perseant #ifndef LFS_ATIME_IFILE
211 1.61 perseant # define LFS_ATIME_IFILE 0 /* Store atime info in ifile (optional in LFSv1) */
212 1.37 perseant #endif
213 1.61 perseant #define LFS_MARKV_MAXBLKCNT 65536 /* Max block count for lfs_markv() */
214 1.61 perseant
215 1.35 perseant /*
216 1.142 dholland * Directories
217 1.142 dholland */
218 1.142 dholland
219 1.142 dholland /*
220 1.146 dholland * A directory consists of some number of blocks of LFS_DIRBLKSIZ
221 1.146 dholland * bytes, where LFS_DIRBLKSIZ is chosen such that it can be transferred
222 1.146 dholland * to disk in a single atomic operation (e.g. 512 bytes on most machines).
223 1.146 dholland *
224 1.146 dholland * Each LFS_DIRBLKSIZ byte block contains some number of directory entry
225 1.146 dholland * structures, which are of variable length. Each directory entry has
226 1.146 dholland * a struct lfs_direct at the front of it, containing its inode number,
227 1.146 dholland * the length of the entry, and the length of the name contained in
228 1.146 dholland * the entry. These are followed by the name padded to a 4 byte boundary.
229 1.146 dholland * All names are guaranteed null terminated.
230 1.146 dholland * The maximum length of a name in a directory is LFS_MAXNAMLEN.
231 1.146 dholland *
232 1.146 dholland * The macro DIRSIZ(fmt, dp) gives the amount of space required to represent
233 1.146 dholland * a directory entry. Free space in a directory is represented by
234 1.146 dholland * entries which have dp->d_reclen > DIRSIZ(fmt, dp). All LFS_DIRBLKSIZ bytes
235 1.146 dholland * in a directory block are claimed by the directory entries. This
236 1.146 dholland * usually results in the last entry in a directory having a large
237 1.146 dholland * dp->d_reclen. When entries are deleted from a directory, the
238 1.146 dholland * space is returned to the previous entry in the same directory
239 1.146 dholland * block by increasing its dp->d_reclen. If the first entry of
240 1.146 dholland * a directory block is free, then its dp->d_ino is set to 0.
241 1.146 dholland * Entries other than the first in a directory do not normally have
242 1.146 dholland * dp->d_ino set to 0.
243 1.146 dholland */
244 1.146 dholland
245 1.146 dholland /*
246 1.146 dholland * Directory block size.
247 1.146 dholland */
248 1.146 dholland #undef LFS_DIRBLKSIZ
249 1.146 dholland #define LFS_DIRBLKSIZ DEV_BSIZE
250 1.146 dholland
251 1.146 dholland /*
252 1.146 dholland * Convert between stat structure types and directory types.
253 1.146 dholland */
254 1.146 dholland #define LFS_IFTODT(mode) (((mode) & 0170000) >> 12)
255 1.146 dholland #define LFS_DTTOIF(dirtype) ((dirtype) << 12)
256 1.146 dholland
257 1.146 dholland /*
258 1.146 dholland * The LFS_DIRSIZ macro gives the minimum record length which will hold
259 1.146 dholland * the directory entry. This requires the amount of space in struct lfs_direct
260 1.146 dholland * without the d_name field, plus enough space for the name with a terminating
261 1.146 dholland * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
262 1.146 dholland */
263 1.146 dholland #define LFS_DIRECTSIZ(namlen) \
264 1.146 dholland ((sizeof(struct lfs_direct) - (LFS_MAXNAMLEN+1)) + (((namlen)+1 + 3) &~ 3))
265 1.146 dholland
266 1.146 dholland #if (BYTE_ORDER == LITTLE_ENDIAN)
267 1.146 dholland #define LFS_DIRSIZ(oldfmt, dp, needswap) \
268 1.146 dholland (((oldfmt) && !(needswap)) ? \
269 1.146 dholland LFS_DIRECTSIZ((dp)->d_type) : LFS_DIRECTSIZ((dp)->d_namlen))
270 1.146 dholland #else
271 1.146 dholland #define LFS_DIRSIZ(oldfmt, dp, needswap) \
272 1.146 dholland (((oldfmt) && (needswap)) ? \
273 1.146 dholland LFS_DIRECTSIZ((dp)->d_type) : LFS_DIRECTSIZ((dp)->d_namlen))
274 1.146 dholland #endif
275 1.146 dholland
276 1.147 dholland /* Constants for the first argument of LFS_DIRSIZ */
277 1.147 dholland #define LFS_OLDDIRFMT 1
278 1.147 dholland #define LFS_NEWDIRFMT 0
279 1.147 dholland
280 1.146 dholland /*
281 1.142 dholland * Theoretically, directories can be more than 2Gb in length; however, in
282 1.142 dholland * practice this seems unlikely. So, we define the type doff_t as a 32-bit
283 1.142 dholland * quantity to keep down the cost of doing lookup on a 32-bit machine.
284 1.142 dholland */
285 1.142 dholland #define doff_t int32_t
286 1.142 dholland #define lfs_doff_t int32_t
287 1.155 dholland #define LFS_MAXDIRSIZE (0x7fffffff)
288 1.142 dholland
289 1.145 dholland /*
290 1.145 dholland * File types for d_type
291 1.145 dholland */
292 1.145 dholland #define LFS_DT_UNKNOWN 0
293 1.145 dholland #define LFS_DT_FIFO 1
294 1.145 dholland #define LFS_DT_CHR 2
295 1.145 dholland #define LFS_DT_DIR 4
296 1.145 dholland #define LFS_DT_BLK 6
297 1.145 dholland #define LFS_DT_REG 8
298 1.145 dholland #define LFS_DT_LNK 10
299 1.145 dholland #define LFS_DT_SOCK 12
300 1.145 dholland #define LFS_DT_WHT 14
301 1.145 dholland
302 1.145 dholland /*
303 1.150 dholland * (See notes above)
304 1.145 dholland */
305 1.145 dholland #define d_ino d_fileno
306 1.145 dholland struct lfs_direct {
307 1.145 dholland u_int32_t d_fileno; /* inode number of entry */
308 1.145 dholland u_int16_t d_reclen; /* length of this record */
309 1.145 dholland u_int8_t d_type; /* file type, see below */
310 1.145 dholland u_int8_t d_namlen; /* length of string in d_name */
311 1.145 dholland char d_name[LFS_MAXNAMLEN + 1];/* name with length <= LFS_MAXNAMLEN */
312 1.145 dholland };
313 1.145 dholland
314 1.145 dholland /*
315 1.145 dholland * Template for manipulating directories. Should use struct lfs_direct's,
316 1.145 dholland * but the name field is LFS_MAXNAMLEN - 1, and this just won't do.
317 1.145 dholland */
318 1.145 dholland struct lfs_dirtemplate {
319 1.145 dholland u_int32_t dot_ino;
320 1.145 dholland int16_t dot_reclen;
321 1.145 dholland u_int8_t dot_type;
322 1.145 dholland u_int8_t dot_namlen;
323 1.145 dholland char dot_name[4]; /* must be multiple of 4 */
324 1.145 dholland u_int32_t dotdot_ino;
325 1.145 dholland int16_t dotdot_reclen;
326 1.145 dholland u_int8_t dotdot_type;
327 1.145 dholland u_int8_t dotdot_namlen;
328 1.145 dholland char dotdot_name[4]; /* ditto */
329 1.145 dholland };
330 1.145 dholland
331 1.145 dholland /*
332 1.145 dholland * This is the old format of directories, sans type element.
333 1.145 dholland */
334 1.145 dholland struct lfs_odirtemplate {
335 1.145 dholland u_int32_t dot_ino;
336 1.145 dholland int16_t dot_reclen;
337 1.145 dholland u_int16_t dot_namlen;
338 1.145 dholland char dot_name[4]; /* must be multiple of 4 */
339 1.145 dholland u_int32_t dotdot_ino;
340 1.145 dholland int16_t dotdot_reclen;
341 1.145 dholland u_int16_t dotdot_namlen;
342 1.145 dholland char dotdot_name[4]; /* ditto */
343 1.145 dholland };
344 1.145 dholland
345 1.142 dholland /*
346 1.143 dholland * Inodes
347 1.143 dholland */
348 1.143 dholland
349 1.143 dholland /*
350 1.151 dholland * A dinode contains all the meta-data associated with a LFS file.
351 1.143 dholland * This structure defines the on-disk format of a dinode. Since
352 1.143 dholland * this structure describes an on-disk structure, all its fields
353 1.143 dholland * are defined by types with precise widths.
354 1.143 dholland */
355 1.143 dholland
356 1.143 dholland struct ulfs1_dinode {
357 1.143 dholland u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
358 1.143 dholland int16_t di_nlink; /* 2: File link count. */
359 1.151 dholland u_int32_t di_inumber; /* 4: Inode number. */
360 1.143 dholland u_int64_t di_size; /* 8: File byte count. */
361 1.143 dholland int32_t di_atime; /* 16: Last access time. */
362 1.143 dholland int32_t di_atimensec; /* 20: Last access time. */
363 1.143 dholland int32_t di_mtime; /* 24: Last modified time. */
364 1.143 dholland int32_t di_mtimensec; /* 28: Last modified time. */
365 1.143 dholland int32_t di_ctime; /* 32: Last inode change time. */
366 1.143 dholland int32_t di_ctimensec; /* 36: Last inode change time. */
367 1.143 dholland int32_t di_db[ULFS_NDADDR]; /* 40: Direct disk blocks. */
368 1.143 dholland int32_t di_ib[ULFS_NIADDR]; /* 88: Indirect disk blocks. */
369 1.143 dholland u_int32_t di_flags; /* 100: Status flags (chflags). */
370 1.143 dholland u_int32_t di_blocks; /* 104: Blocks actually held. */
371 1.143 dholland int32_t di_gen; /* 108: Generation number. */
372 1.143 dholland u_int32_t di_uid; /* 112: File owner. */
373 1.143 dholland u_int32_t di_gid; /* 116: File group. */
374 1.143 dholland u_int64_t di_modrev; /* 120: i_modrev for NFSv4 */
375 1.143 dholland };
376 1.143 dholland
377 1.143 dholland struct ulfs2_dinode {
378 1.143 dholland u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
379 1.143 dholland int16_t di_nlink; /* 2: File link count. */
380 1.143 dholland u_int32_t di_uid; /* 4: File owner. */
381 1.143 dholland u_int32_t di_gid; /* 8: File group. */
382 1.143 dholland u_int32_t di_blksize; /* 12: Inode blocksize. */
383 1.143 dholland u_int64_t di_size; /* 16: File byte count. */
384 1.143 dholland u_int64_t di_blocks; /* 24: Bytes actually held. */
385 1.143 dholland int64_t di_atime; /* 32: Last access time. */
386 1.143 dholland int64_t di_mtime; /* 40: Last modified time. */
387 1.143 dholland int64_t di_ctime; /* 48: Last inode change time. */
388 1.143 dholland int64_t di_birthtime; /* 56: Inode creation time. */
389 1.143 dholland int32_t di_mtimensec; /* 64: Last modified time. */
390 1.143 dholland int32_t di_atimensec; /* 68: Last access time. */
391 1.143 dholland int32_t di_ctimensec; /* 72: Last inode change time. */
392 1.143 dholland int32_t di_birthnsec; /* 76: Inode creation time. */
393 1.143 dholland int32_t di_gen; /* 80: Generation number. */
394 1.143 dholland u_int32_t di_kernflags; /* 84: Kernel flags. */
395 1.143 dholland u_int32_t di_flags; /* 88: Status flags (chflags). */
396 1.143 dholland int32_t di_extsize; /* 92: External attributes block. */
397 1.143 dholland int64_t di_extb[ULFS_NXADDR];/* 96: External attributes block. */
398 1.143 dholland int64_t di_db[ULFS_NDADDR]; /* 112: Direct disk blocks. */
399 1.143 dholland int64_t di_ib[ULFS_NIADDR]; /* 208: Indirect disk blocks. */
400 1.143 dholland u_int64_t di_modrev; /* 232: i_modrev for NFSv4 */
401 1.163 dholland u_int32_t di_inumber; /* 240: Inode number */
402 1.163 dholland u_int32_t di_spare[3]; /* 244: Reserved; currently unused */
403 1.143 dholland };
404 1.143 dholland
405 1.143 dholland /*
406 1.143 dholland * The di_db fields may be overlaid with other information for
407 1.143 dholland * file types that do not have associated disk storage. Block
408 1.143 dholland * and character devices overlay the first data block with their
409 1.143 dholland * dev_t value. Short symbolic links place their path in the
410 1.143 dholland * di_db area.
411 1.143 dholland */
412 1.143 dholland #define di_rdev di_db[0]
413 1.143 dholland
414 1.143 dholland /* Size of the on-disk inode. */
415 1.143 dholland #define LFS_DINODE1_SIZE (sizeof(struct ulfs1_dinode)) /* 128 */
416 1.143 dholland #define LFS_DINODE2_SIZE (sizeof(struct ulfs2_dinode))
417 1.143 dholland
418 1.144 dholland /* File types, found in the upper bits of di_mode. */
419 1.144 dholland #define LFS_IFMT 0170000 /* Mask of file type. */
420 1.144 dholland #define LFS_IFIFO 0010000 /* Named pipe (fifo). */
421 1.144 dholland #define LFS_IFCHR 0020000 /* Character device. */
422 1.144 dholland #define LFS_IFDIR 0040000 /* Directory file. */
423 1.144 dholland #define LFS_IFBLK 0060000 /* Block device. */
424 1.144 dholland #define LFS_IFREG 0100000 /* Regular file. */
425 1.144 dholland #define LFS_IFLNK 0120000 /* Symbolic link. */
426 1.144 dholland #define LFS_IFSOCK 0140000 /* UNIX domain socket. */
427 1.144 dholland #define LFS_IFWHT 0160000 /* Whiteout. */
428 1.144 dholland
429 1.143 dholland /*
430 1.61 perseant * "struct buf" associated definitions
431 1.35 perseant */
432 1.35 perseant
433 1.61 perseant /* Unassigned disk addresses. */
434 1.61 perseant #define UNASSIGNED -1
435 1.61 perseant #define UNWRITTEN -2
436 1.61 perseant
437 1.61 perseant /* Unused logical block number */
438 1.61 perseant #define LFS_UNUSED_LBN -1
439 1.46 perseant
440 1.61 perseant /*
441 1.61 perseant * "struct inode" associated definitions
442 1.61 perseant */
443 1.61 perseant
444 1.24 perseant /* For convenience */
445 1.73 mycroft #define IN_ALLMOD (IN_MODIFIED|IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY|IN_ACCESSED|IN_CLEANING)
446 1.37 perseant
447 1.46 perseant /*
448 1.61 perseant * On-disk and in-memory checkpoint segment usage structure.
449 1.61 perseant */
450 1.1 mycroft typedef struct segusage SEGUSE;
451 1.1 mycroft struct segusage {
452 1.37 perseant u_int32_t su_nbytes; /* 0: number of live bytes */
453 1.37 perseant u_int32_t su_olastmod; /* 4: SEGUSE last modified timestamp */
454 1.37 perseant u_int16_t su_nsums; /* 8: number of summaries in segment */
455 1.37 perseant u_int16_t su_ninos; /* 10: number of inode blocks in seg */
456 1.37 perseant
457 1.37 perseant #define SEGUSE_ACTIVE 0x01 /* segment currently being written */
458 1.37 perseant #define SEGUSE_DIRTY 0x02 /* segment has data in it */
459 1.37 perseant #define SEGUSE_SUPERBLOCK 0x04 /* segment contains a superblock */
460 1.49 perseant #define SEGUSE_ERROR 0x08 /* cleaner: do not clean segment */
461 1.49 perseant #define SEGUSE_EMPTY 0x10 /* segment is empty */
462 1.86 perseant #define SEGUSE_INVAL 0x20 /* segment is invalid */
463 1.37 perseant u_int32_t su_flags; /* 12: segment flags */
464 1.37 perseant u_int64_t su_lastmod; /* 16: last modified timestamp */
465 1.1 mycroft };
466 1.1 mycroft
467 1.37 perseant typedef struct segusage_v1 SEGUSE_V1;
468 1.37 perseant struct segusage_v1 {
469 1.37 perseant u_int32_t su_nbytes; /* 0: number of live bytes */
470 1.37 perseant u_int32_t su_lastmod; /* 4: SEGUSE last modified timestamp */
471 1.37 perseant u_int16_t su_nsums; /* 8: number of summaries in segment */
472 1.37 perseant u_int16_t su_ninos; /* 10: number of inode blocks in seg */
473 1.49 perseant u_int32_t su_flags; /* 12: segment flags */
474 1.37 perseant };
475 1.37 perseant
476 1.61 perseant /*
477 1.61 perseant * On-disk file information. One per file with data blocks in the segment.
478 1.178 dholland *
479 1.178 dholland * The FINFO structure is a header; it is followed by fi_nblocks block
480 1.178 dholland * pointers, which are logical block numbers of the file. (These are the
481 1.178 dholland * blocks of the file present in this segment.)
482 1.61 perseant */
483 1.178 dholland
484 1.178 dholland typedef struct finfo64 FINFO64;
485 1.178 dholland struct finfo64 {
486 1.178 dholland u_int32_t fi_nblocks; /* number of blocks */
487 1.178 dholland u_int32_t fi_version; /* version number */
488 1.178 dholland u_int64_t fi_ino; /* inode number */
489 1.178 dholland u_int32_t fi_lastlength; /* length of last block in array */
490 1.178 dholland u_int32_t fi_pad; /* unused */
491 1.178 dholland };
492 1.178 dholland
493 1.178 dholland typedef struct finfo32 FINFO32;
494 1.178 dholland struct finfo32 {
495 1.3 cgd u_int32_t fi_nblocks; /* number of blocks */
496 1.3 cgd u_int32_t fi_version; /* version number */
497 1.3 cgd u_int32_t fi_ino; /* inode number */
498 1.9 fvdl u_int32_t fi_lastlength; /* length of last block in array */
499 1.1 mycroft };
500 1.178 dholland
501 1.178 dholland typedef union finfo {
502 1.178 dholland struct finfo64 u_64;
503 1.178 dholland struct finfo32 u_32;
504 1.178 dholland } FINFO;
505 1.37 perseant
506 1.61 perseant /*
507 1.61 perseant * Index file inode entries.
508 1.61 perseant */
509 1.176 dholland
510 1.176 dholland /* magic value for daddrs */
511 1.176 dholland #define LFS_UNUSED_DADDR 0 /* out-of-band daddr */
512 1.176 dholland /* magic value for if_nextfree */
513 1.176 dholland #define LFS_ORPHAN_NEXTFREE (~(u_int32_t)0) /* indicate orphaned file */
514 1.176 dholland
515 1.176 dholland typedef struct ifile64 IFILE64;
516 1.176 dholland struct ifile64 {
517 1.176 dholland u_int32_t if_version; /* inode version number */
518 1.176 dholland u_int32_t if_pad; /* 64-bit alignment padding */
519 1.176 dholland int64_t if_daddr; /* inode disk address */
520 1.176 dholland u_int64_t if_nextfree; /* next-unallocated inode */
521 1.176 dholland u_int32_t if_atime_sec; /* Last access time, seconds */
522 1.176 dholland u_int32_t if_atime_nsec; /* and nanoseconds */
523 1.176 dholland };
524 1.176 dholland
525 1.176 dholland typedef struct ifile32 IFILE32;
526 1.176 dholland struct ifile32 {
527 1.61 perseant u_int32_t if_version; /* inode version number */
528 1.61 perseant int32_t if_daddr; /* inode disk address */
529 1.91 yamt u_int32_t if_nextfree; /* next-unallocated inode */
530 1.61 perseant u_int32_t if_atime_sec; /* Last access time, seconds */
531 1.61 perseant u_int32_t if_atime_nsec; /* and nanoseconds */
532 1.61 perseant };
533 1.61 perseant
534 1.61 perseant typedef struct ifile_v1 IFILE_V1;
535 1.61 perseant struct ifile_v1 {
536 1.61 perseant u_int32_t if_version; /* inode version number */
537 1.61 perseant int32_t if_daddr; /* inode disk address */
538 1.91 yamt u_int32_t if_nextfree; /* next-unallocated inode */
539 1.61 perseant #if LFS_ATIME_IFILE
540 1.176 dholland #error "this cannot work"
541 1.61 perseant struct timespec if_atime; /* Last access time */
542 1.61 perseant #endif
543 1.61 perseant };
544 1.61 perseant
545 1.61 perseant /*
546 1.176 dholland * Note: struct ifile_v1 is often handled by accessing the first three
547 1.176 dholland * fields of struct ifile32. (XXX: Blah. This should be cleaned up as
548 1.176 dholland * it may in some cases violate the strict-aliasing rules.)
549 1.176 dholland */
550 1.176 dholland typedef union ifile {
551 1.176 dholland struct ifile64 u_64;
552 1.176 dholland struct ifile32 u_32;
553 1.176 dholland struct ifile_v1 u_v1;
554 1.176 dholland } IFILE;
555 1.176 dholland
556 1.176 dholland /*
557 1.61 perseant * Cleaner information structure. This resides in the ifile and is used
558 1.61 perseant * to pass information from the kernel to the cleaner.
559 1.61 perseant */
560 1.175 dholland
561 1.175 dholland /* flags for ->flags */
562 1.114 perseant #define LFS_CLEANER_MUST_CLEAN 0x01
563 1.175 dholland
564 1.175 dholland typedef struct _cleanerinfo32 {
565 1.175 dholland u_int32_t clean; /* 0: number of clean segments */
566 1.175 dholland u_int32_t dirty; /* 4: number of dirty segments */
567 1.175 dholland int32_t bfree; /* 8: disk blocks free */
568 1.175 dholland int32_t avail; /* 12: disk blocks available */
569 1.175 dholland u_int32_t free_head; /* 16: head of the inode free list */
570 1.175 dholland u_int32_t free_tail; /* 20: tail of the inode free list */
571 1.175 dholland u_int32_t flags; /* 24: status word from the kernel */
572 1.175 dholland } CLEANERINFO32;
573 1.175 dholland
574 1.175 dholland typedef struct _cleanerinfo64 {
575 1.175 dholland u_int32_t clean; /* 0: number of clean segments */
576 1.175 dholland u_int32_t dirty; /* 4: number of dirty segments */
577 1.175 dholland int64_t bfree; /* 8: disk blocks free */
578 1.175 dholland int64_t avail; /* 16: disk blocks available */
579 1.175 dholland u_int64_t free_head; /* 24: head of the inode free list */
580 1.175 dholland u_int64_t free_tail; /* 32: tail of the inode free list */
581 1.175 dholland u_int32_t flags; /* 40: status word from the kernel */
582 1.175 dholland u_int32_t pad; /* 44: must be 64-bit aligned */
583 1.175 dholland } CLEANERINFO64;
584 1.175 dholland
585 1.175 dholland /* this must not go to disk directly of course */
586 1.175 dholland typedef union _cleanerinfo {
587 1.175 dholland CLEANERINFO32 u_32;
588 1.175 dholland CLEANERINFO64 u_64;
589 1.61 perseant } CLEANERINFO;
590 1.61 perseant
591 1.61 perseant /*
592 1.61 perseant * On-disk segment summary information
593 1.61 perseant */
594 1.177 dholland
595 1.177 dholland /* magic value for ss_magic */
596 1.177 dholland #define SS_MAGIC 0x061561
597 1.177 dholland
598 1.177 dholland /* flags for ss_flags */
599 1.177 dholland #define SS_DIROP 0x01 /* segment begins a dirop */
600 1.177 dholland #define SS_CONT 0x02 /* more partials to finish this write*/
601 1.177 dholland #define SS_CLEAN 0x04 /* written by the cleaner */
602 1.177 dholland #define SS_RFW 0x08 /* written by the roll-forward agent */
603 1.177 dholland #define SS_RECLAIM 0x10 /* written by the roll-forward agent */
604 1.177 dholland
605 1.61 perseant typedef struct segsum_v1 SEGSUM_V1;
606 1.61 perseant struct segsum_v1 {
607 1.61 perseant u_int32_t ss_sumsum; /* 0: check sum of summary block */
608 1.61 perseant u_int32_t ss_datasum; /* 4: check sum of data */
609 1.61 perseant u_int32_t ss_magic; /* 8: segment summary magic number */
610 1.61 perseant int32_t ss_next; /* 12: next segment */
611 1.61 perseant u_int32_t ss_create; /* 16: creation time stamp */
612 1.61 perseant u_int16_t ss_nfinfo; /* 20: number of file info structures */
613 1.61 perseant u_int16_t ss_ninos; /* 22: number of inodes in summary */
614 1.61 perseant u_int16_t ss_flags; /* 24: used for directory operations */
615 1.61 perseant u_int16_t ss_pad; /* 26: extra space */
616 1.61 perseant /* FINFO's and inode daddr's... */
617 1.61 perseant };
618 1.61 perseant
619 1.177 dholland typedef struct segsum32 SEGSUM32;
620 1.177 dholland struct segsum32 {
621 1.61 perseant u_int32_t ss_sumsum; /* 0: check sum of summary block */
622 1.61 perseant u_int32_t ss_datasum; /* 4: check sum of data */
623 1.61 perseant u_int32_t ss_magic; /* 8: segment summary magic number */
624 1.169 dholland int32_t ss_next; /* 12: next segment (disk address) */
625 1.61 perseant u_int32_t ss_ident; /* 16: roll-forward fsid */
626 1.61 perseant u_int16_t ss_nfinfo; /* 20: number of file info structures */
627 1.61 perseant u_int16_t ss_ninos; /* 22: number of inodes in summary */
628 1.61 perseant u_int16_t ss_flags; /* 24: used for directory operations */
629 1.135 perseant u_int8_t ss_pad[2]; /* 26: extra space */
630 1.135 perseant u_int32_t ss_reclino; /* 28: inode being reclaimed */
631 1.61 perseant u_int64_t ss_serial; /* 32: serial number */
632 1.61 perseant u_int64_t ss_create; /* 40: time stamp */
633 1.61 perseant /* FINFO's and inode daddr's... */
634 1.61 perseant };
635 1.61 perseant
636 1.177 dholland typedef struct segsum64 SEGSUM64;
637 1.177 dholland struct segsum64 {
638 1.177 dholland u_int32_t ss_sumsum; /* 0: check sum of summary block */
639 1.177 dholland u_int32_t ss_datasum; /* 4: check sum of data */
640 1.177 dholland u_int32_t ss_magic; /* 8: segment summary magic number */
641 1.177 dholland u_int32_t ss_ident; /* 12: roll-forward fsid */
642 1.177 dholland int64_t ss_next; /* 16: next segment (disk address) */
643 1.177 dholland u_int16_t ss_nfinfo; /* 24: number of file info structures */
644 1.177 dholland u_int16_t ss_ninos; /* 26: number of inodes in summary */
645 1.177 dholland u_int16_t ss_flags; /* 28: used for directory operations */
646 1.177 dholland u_int8_t ss_pad[2]; /* 30: extra space */
647 1.177 dholland u_int64_t ss_reclino; /* 32: inode being reclaimed */
648 1.177 dholland u_int64_t ss_serial; /* 40: serial number */
649 1.177 dholland u_int64_t ss_create; /* 48: time stamp */
650 1.177 dholland /* FINFO's and inode daddr's... */
651 1.177 dholland };
652 1.177 dholland
653 1.177 dholland typedef union segsum SEGSUM;
654 1.177 dholland union segsum {
655 1.177 dholland struct segsum64 u_64;
656 1.177 dholland struct segsum32 u_32;
657 1.177 dholland struct segsum_v1 u_v1;
658 1.177 dholland };
659 1.177 dholland
660 1.61 perseant
661 1.61 perseant /*
662 1.61 perseant * On-disk super block.
663 1.171 dholland *
664 1.171 dholland * We have separate superblock structures for the 32-bit and 64-bit
665 1.171 dholland * LFS, and accessor functions to hide the differences.
666 1.171 dholland *
667 1.171 dholland * For lfs64, the format version is always 2; version 1 lfs is old.
668 1.171 dholland * For both, the inode format version is 0; for lfs32 this selects the
669 1.171 dholland * same 32-bit inode as always, and for lfs64 this selects the larger
670 1.171 dholland * 64-bit inode structure we got from ffsv2.
671 1.171 dholland *
672 1.171 dholland * In lfs64:
673 1.171 dholland * - inode numbers are still 32 bit
674 1.171 dholland * - segments may not be larger than 4G (counted in bytes)
675 1.171 dholland * - there may not be more than 2^32 (or perhaps 2^31) segments
676 1.171 dholland * - the total volume size is limited to 2^63 frags and/or 2^63
677 1.171 dholland * disk blocks, and probably in practice 2^63 bytes.
678 1.61 perseant */
679 1.171 dholland
680 1.171 dholland #define LFS_MAGIC 0x070162
681 1.171 dholland #define LFS_MAGIC_SWAPPED 0x62010700
682 1.171 dholland
683 1.171 dholland #define LFS64_MAGIC 0x19620701
684 1.171 dholland #define LFS64_MAGIC_SWAPPED 0x01076219
685 1.171 dholland
686 1.171 dholland #define LFS_VERSION 2
687 1.171 dholland
688 1.171 dholland #define LFS_MIN_SBINTERVAL 5 /* min superblock segment spacing */
689 1.171 dholland #define LFS_MAXNUMSB 10 /* max number of superblocks */
690 1.171 dholland
691 1.171 dholland /* flags for dlfs_pflags */
692 1.171 dholland #define LFS_PF_CLEAN 0x1
693 1.171 dholland
694 1.171 dholland /* Inode format versions */
695 1.171 dholland #define LFS_44INODEFMT 0
696 1.171 dholland #define LFS_MAXINODEFMT 0
697 1.171 dholland
698 1.10 pk struct dlfs {
699 1.49 perseant u_int32_t dlfs_magic; /* 0: magic number */
700 1.49 perseant u_int32_t dlfs_version; /* 4: version number */
701 1.49 perseant
702 1.49 perseant u_int32_t dlfs_size; /* 8: number of blocks in fs (v1) */
703 1.49 perseant /* number of frags in fs (v2) */
704 1.49 perseant u_int32_t dlfs_ssize; /* 12: number of blocks per segment (v1) */
705 1.49 perseant /* number of bytes per segment (v2) */
706 1.49 perseant u_int32_t dlfs_dsize; /* 16: number of disk blocks in fs */
707 1.49 perseant u_int32_t dlfs_bsize; /* 20: file system block size */
708 1.49 perseant u_int32_t dlfs_fsize; /* 24: size of frag blocks in fs */
709 1.49 perseant u_int32_t dlfs_frag; /* 28: number of frags in a block in fs */
710 1.1 mycroft
711 1.1 mycroft /* Checkpoint region. */
712 1.169 dholland u_int32_t dlfs_freehd; /* 32: start of the free inode list */
713 1.168 dholland int32_t dlfs_bfree; /* 36: number of free frags */
714 1.49 perseant u_int32_t dlfs_nfiles; /* 40: number of allocated inodes */
715 1.49 perseant int32_t dlfs_avail; /* 44: blocks available for writing */
716 1.49 perseant int32_t dlfs_uinodes; /* 48: inodes in cache not yet on disk */
717 1.49 perseant int32_t dlfs_idaddr; /* 52: inode file disk address */
718 1.49 perseant u_int32_t dlfs_ifile; /* 56: inode file inode number */
719 1.54 perseant int32_t dlfs_lastseg; /* 60: address of last segment written */
720 1.54 perseant int32_t dlfs_nextseg; /* 64: address of next segment to write */
721 1.54 perseant int32_t dlfs_curseg; /* 68: current segment being written */
722 1.54 perseant int32_t dlfs_offset; /* 72: offset in curseg for next partial */
723 1.49 perseant int32_t dlfs_lastpseg; /* 76: address of last partial written */
724 1.49 perseant u_int32_t dlfs_inopf; /* 80: v1: time stamp; v2: inodes per frag */
725 1.1 mycroft
726 1.1 mycroft /* These are configuration parameters. */
727 1.49 perseant u_int32_t dlfs_minfree; /* 84: minimum percentage of free blocks */
728 1.1 mycroft
729 1.1 mycroft /* These fields can be computed from the others. */
730 1.49 perseant u_int64_t dlfs_maxfilesize; /* 88: maximum representable file size */
731 1.168 dholland u_int32_t dlfs_fsbpseg; /* 96: frags (fsb) per segment */
732 1.49 perseant u_int32_t dlfs_inopb; /* 100: inodes per block */
733 1.49 perseant u_int32_t dlfs_ifpb; /* 104: IFILE entries per block */
734 1.49 perseant u_int32_t dlfs_sepb; /* 108: SEGUSE entries per block */
735 1.49 perseant u_int32_t dlfs_nindir; /* 112: indirect pointers per block */
736 1.49 perseant u_int32_t dlfs_nseg; /* 116: number of segments */
737 1.49 perseant u_int32_t dlfs_nspf; /* 120: number of sectors per fragment */
738 1.49 perseant u_int32_t dlfs_cleansz; /* 124: cleaner info size in blocks */
739 1.49 perseant u_int32_t dlfs_segtabsz; /* 128: segment table size in blocks */
740 1.49 perseant u_int32_t dlfs_segmask; /* 132: calculate offset within a segment */
741 1.49 perseant u_int32_t dlfs_segshift; /* 136: fast mult/div for segments */
742 1.49 perseant u_int32_t dlfs_bshift; /* 140: calc block number from file offset */
743 1.49 perseant u_int32_t dlfs_ffshift; /* 144: fast mult/div for frag from file */
744 1.49 perseant u_int32_t dlfs_fbshift; /* 148: fast mult/div for frag from block */
745 1.49 perseant u_int64_t dlfs_bmask; /* 152: calc block offset from file offset */
746 1.49 perseant u_int64_t dlfs_ffmask; /* 160: calc frag offset from file offset */
747 1.49 perseant u_int64_t dlfs_fbmask; /* 168: calc frag offset from block offset */
748 1.49 perseant u_int32_t dlfs_blktodb; /* 176: blktodb and dbtoblk shift constant */
749 1.49 perseant u_int32_t dlfs_sushift; /* 180: fast mult/div for segusage table */
750 1.49 perseant
751 1.49 perseant int32_t dlfs_maxsymlinklen; /* 184: max length of an internal symlink */
752 1.171 dholland /* 188: superblock disk offsets */
753 1.171 dholland int32_t dlfs_sboffs[LFS_MAXNUMSB];
754 1.3 cgd
755 1.49 perseant u_int32_t dlfs_nclean; /* 228: Number of clean segments */
756 1.11 perseant u_char dlfs_fsmnt[MNAMELEN]; /* 232: name mounted on */
757 1.49 perseant u_int16_t dlfs_pflags; /* 322: file system persistent flags */
758 1.49 perseant int32_t dlfs_dmeta; /* 324: total number of dirty summaries */
759 1.105 perseant u_int32_t dlfs_minfreeseg; /* 328: segments not counted in bfree */
760 1.49 perseant u_int32_t dlfs_sumsize; /* 332: size of summary blocks */
761 1.49 perseant u_int64_t dlfs_serial; /* 336: serial number */
762 1.49 perseant u_int32_t dlfs_ibsize; /* 344: size of inode blocks */
763 1.165 dholland int32_t dlfs_s0addr; /* 348: start of segment 0 */
764 1.49 perseant u_int64_t dlfs_tstamp; /* 352: time stamp */
765 1.37 perseant u_int32_t dlfs_inodefmt; /* 360: inode format version */
766 1.37 perseant u_int32_t dlfs_interleave; /* 364: segment interleave */
767 1.49 perseant u_int32_t dlfs_ident; /* 368: per-fs identifier */
768 1.156 dholland u_int32_t dlfs_fsbtodb; /* 372: fsbtodb and dbtodsb shift constant */
769 1.105 perseant u_int32_t dlfs_resvseg; /* 376: segments reserved for the cleaner */
770 1.105 perseant int8_t dlfs_pad[128]; /* 380: round to 512 bytes */
771 1.5 mycroft /* Checksum -- last valid disk field. */
772 1.49 perseant u_int32_t dlfs_cksum; /* 508: checksum for superblock checking */
773 1.10 pk };
774 1.1 mycroft
775 1.171 dholland struct dlfs64 {
776 1.171 dholland u_int32_t dlfs_magic; /* 0: magic number */
777 1.171 dholland u_int32_t dlfs_version; /* 4: version number (2) */
778 1.171 dholland
779 1.171 dholland u_int64_t dlfs_size; /* 8: number of frags in fs (v2) */
780 1.171 dholland u_int64_t dlfs_dsize; /* 16: number of disk blocks in fs */
781 1.171 dholland u_int32_t dlfs_ssize; /* 24: number of bytes per segment (v2) */
782 1.171 dholland u_int32_t dlfs_bsize; /* 28: file system block size */
783 1.171 dholland u_int32_t dlfs_fsize; /* 32: size of frag blocks in fs */
784 1.171 dholland u_int32_t dlfs_frag; /* 36: number of frags in a block in fs */
785 1.171 dholland
786 1.171 dholland /* Checkpoint region. */
787 1.171 dholland u_int32_t dlfs_freehd; /* 40: start of the free inode list */
788 1.171 dholland u_int32_t dlfs_nfiles; /* 44: number of allocated inodes */
789 1.171 dholland int64_t dlfs_bfree; /* 48: number of free frags */
790 1.171 dholland int64_t dlfs_avail; /* 56: blocks available for writing */
791 1.171 dholland int64_t dlfs_idaddr; /* 64: inode file disk address */
792 1.171 dholland int32_t dlfs_uinodes; /* 72: inodes in cache not yet on disk */
793 1.171 dholland u_int32_t dlfs_ifile; /* 76: inode file inode number */
794 1.171 dholland int64_t dlfs_lastseg; /* 80: address of last segment written */
795 1.171 dholland int64_t dlfs_nextseg; /* 88: address of next segment to write */
796 1.171 dholland int64_t dlfs_curseg; /* 96: current segment being written */
797 1.171 dholland int64_t dlfs_offset; /* 104: offset in curseg for next partial */
798 1.171 dholland int64_t dlfs_lastpseg; /* 112: address of last partial written */
799 1.171 dholland u_int32_t dlfs_inopf; /* 120: inodes per frag */
800 1.171 dholland
801 1.171 dholland /* These are configuration parameters. */
802 1.171 dholland u_int32_t dlfs_minfree; /* 124: minimum percentage of free blocks */
803 1.171 dholland
804 1.171 dholland /* These fields can be computed from the others. */
805 1.171 dholland u_int64_t dlfs_maxfilesize; /* 128: maximum representable file size */
806 1.171 dholland u_int32_t dlfs_fsbpseg; /* 136: frags (fsb) per segment */
807 1.171 dholland u_int32_t dlfs_inopb; /* 140: inodes per block */
808 1.171 dholland u_int32_t dlfs_ifpb; /* 144: IFILE entries per block */
809 1.171 dholland u_int32_t dlfs_sepb; /* 148: SEGUSE entries per block */
810 1.171 dholland u_int32_t dlfs_nindir; /* 152: indirect pointers per block */
811 1.171 dholland u_int32_t dlfs_nseg; /* 156: number of segments */
812 1.171 dholland u_int32_t dlfs_nspf; /* 160: number of sectors per fragment */
813 1.171 dholland u_int32_t dlfs_cleansz; /* 164: cleaner info size in blocks */
814 1.171 dholland u_int32_t dlfs_segtabsz; /* 168: segment table size in blocks */
815 1.171 dholland u_int32_t dlfs_bshift; /* 172: calc block number from file offset */
816 1.171 dholland u_int32_t dlfs_ffshift; /* 176: fast mult/div for frag from file */
817 1.171 dholland u_int32_t dlfs_fbshift; /* 180: fast mult/div for frag from block */
818 1.171 dholland u_int64_t dlfs_bmask; /* 184: calc block offset from file offset */
819 1.171 dholland u_int64_t dlfs_ffmask; /* 192: calc frag offset from file offset */
820 1.171 dholland u_int64_t dlfs_fbmask; /* 200: calc frag offset from block offset */
821 1.171 dholland u_int32_t dlfs_blktodb; /* 208: blktodb and dbtoblk shift constant */
822 1.171 dholland u_int32_t dlfs_sushift; /* 212: fast mult/div for segusage table */
823 1.171 dholland
824 1.171 dholland /* 216: superblock disk offsets */
825 1.171 dholland int64_t dlfs_sboffs[LFS_MAXNUMSB];
826 1.171 dholland
827 1.171 dholland int32_t dlfs_maxsymlinklen; /* 296: max len of an internal symlink */
828 1.171 dholland u_int32_t dlfs_nclean; /* 300: Number of clean segments */
829 1.171 dholland u_char dlfs_fsmnt[MNAMELEN]; /* 304: name mounted on */
830 1.171 dholland u_int16_t dlfs_pflags; /* 394: file system persistent flags */
831 1.171 dholland int32_t dlfs_dmeta; /* 396: total number of dirty summaries */
832 1.171 dholland u_int32_t dlfs_minfreeseg; /* 400: segments not counted in bfree */
833 1.171 dholland u_int32_t dlfs_sumsize; /* 404: size of summary blocks */
834 1.171 dholland u_int32_t dlfs_ibsize; /* 408: size of inode blocks */
835 1.171 dholland u_int32_t dlfs_inodefmt; /* 412: inode format version */
836 1.171 dholland u_int64_t dlfs_serial; /* 416: serial number */
837 1.171 dholland int64_t dlfs_s0addr; /* 424: start of segment 0 */
838 1.171 dholland u_int64_t dlfs_tstamp; /* 432: time stamp */
839 1.171 dholland u_int32_t dlfs_interleave; /* 440: segment interleave */
840 1.171 dholland u_int32_t dlfs_ident; /* 444: per-fs identifier */
841 1.171 dholland u_int32_t dlfs_fsbtodb; /* 448: fsbtodb and dbtodsb shift constant */
842 1.171 dholland u_int32_t dlfs_resvseg; /* 452: segments reserved for the cleaner */
843 1.171 dholland int8_t dlfs_pad[52]; /* 456: round to 512 bytes */
844 1.171 dholland /* Checksum -- last valid disk field. */
845 1.171 dholland u_int32_t dlfs_cksum; /* 508: checksum for superblock checking */
846 1.171 dholland };
847 1.171 dholland
848 1.101 perseant /* Type used for the inode bitmap */
849 1.101 perseant typedef u_int32_t lfs_bm_t;
850 1.101 perseant
851 1.61 perseant /*
852 1.104 perseant * Linked list of segments whose byte count needs updating following a
853 1.104 perseant * file truncation.
854 1.104 perseant */
855 1.104 perseant struct segdelta {
856 1.104 perseant long segnum;
857 1.104 perseant size_t num;
858 1.104 perseant LIST_ENTRY(segdelta) list;
859 1.104 perseant };
860 1.104 perseant
861 1.104 perseant /*
862 1.61 perseant * In-memory super block.
863 1.61 perseant */
864 1.10 pk struct lfs {
865 1.171 dholland union { /* on-disk parameters */
866 1.171 dholland struct dlfs u_32;
867 1.171 dholland struct dlfs64 u_64;
868 1.171 dholland } lfs_dlfs_u;
869 1.26 perseant
870 1.1 mycroft /* These fields are set at mount time and are meaningless on disk. */
871 1.171 dholland unsigned lfs_is64 : 1; /* are we lfs64 or lfs32? */
872 1.171 dholland
873 1.5 mycroft struct segment *lfs_sp; /* current segment being written */
874 1.5 mycroft struct vnode *lfs_ivnode; /* vnode for the ifile */
875 1.8 is u_int32_t lfs_seglock; /* single-thread the segment writer */
876 1.5 mycroft pid_t lfs_lockpid; /* pid of lock holder */
877 1.98 perseant lwpid_t lfs_locklwp; /* lwp of lock holder */
878 1.8 is u_int32_t lfs_iocount; /* number of ios pending */
879 1.8 is u_int32_t lfs_writer; /* don't allow any dirops to start */
880 1.8 is u_int32_t lfs_dirops; /* count of active directory ops */
881 1.105 perseant u_int32_t lfs_dirvcount; /* count of VDIROP nodes in this fs */
882 1.8 is u_int32_t lfs_doifile; /* Write ifile blocks on next write */
883 1.8 is u_int32_t lfs_nactive; /* Number of segments since last ckp */
884 1.5 mycroft int8_t lfs_fmod; /* super block modified flag */
885 1.5 mycroft int8_t lfs_ronly; /* mounted read-only flag */
886 1.39 perseant #define LFS_NOTYET 0x01
887 1.39 perseant #define LFS_IFDIRTY 0x02
888 1.39 perseant #define LFS_WARNED 0x04
889 1.64 perseant #define LFS_UNDIROP 0x08
890 1.5 mycroft int8_t lfs_flags; /* currently unused flag */
891 1.49 perseant u_int16_t lfs_activesb; /* toggle between superblocks */
892 1.61 perseant daddr_t lfs_sbactive; /* disk address of current sb write */
893 1.49 perseant struct vnode *lfs_flushvp; /* vnode being flushed */
894 1.102 perseant int lfs_flushvp_fakevref; /* fake vref count for flushvp */
895 1.49 perseant struct vnode *lfs_unlockvp; /* being inactivated in lfs_segunlock */
896 1.15 perseant u_int32_t lfs_diropwait; /* # procs waiting on dirop flush */
897 1.37 perseant size_t lfs_devbsize; /* Device block size */
898 1.37 perseant size_t lfs_devbshift; /* Device block shift */
899 1.118 ad krwlock_t lfs_fraglock;
900 1.123 ad krwlock_t lfs_iflock; /* Ifile lock */
901 1.123 ad kcondvar_t lfs_stopcv; /* Wrap lock */
902 1.123 ad struct lwp *lfs_stoplwp;
903 1.25 perseant pid_t lfs_rfpid; /* Process ID of roll-forward agent */
904 1.49 perseant int lfs_nadirop; /* number of active dirop nodes */
905 1.49 perseant long lfs_ravail; /* blocks pre-reserved for writing */
906 1.75 perseant long lfs_favail; /* blocks pre-reserved for writing */
907 1.153 dholland struct lfs_res_blk *lfs_resblk; /* Reserved memory for pageout */
908 1.46 perseant TAILQ_HEAD(, inode) lfs_dchainhd; /* dirop vnodes */
909 1.46 perseant TAILQ_HEAD(, inode) lfs_pchainhd; /* paging vnodes */
910 1.46 perseant #define LFS_RESHASH_WIDTH 17
911 1.76 perry LIST_HEAD(, lfs_res_blk) lfs_reshash[LFS_RESHASH_WIDTH];
912 1.49 perseant int lfs_pdflush; /* pagedaemon wants us to flush */
913 1.46 perseant u_int32_t **lfs_suflags; /* Segment use flags */
914 1.47 soren #ifdef _KERNEL
915 1.46 perseant struct pool lfs_clpool; /* Pool for struct lfs_cluster */
916 1.46 perseant struct pool lfs_bpppool; /* Pool for bpp */
917 1.46 perseant struct pool lfs_segpool; /* Pool for struct segment */
918 1.61 perseant #endif /* _KERNEL */
919 1.55 perseant #define LFS_MAX_CLEANIND 64
920 1.170 dholland daddr_t lfs_cleanint[LFS_MAX_CLEANIND]; /* Active cleaning intervals */
921 1.123 ad int lfs_cleanind; /* Index into intervals */
922 1.61 perseant int lfs_sleepers; /* # procs sleeping this fs */
923 1.75 perseant int lfs_pages; /* dirty pages blaming this fs */
924 1.101 perseant lfs_bm_t *lfs_ino_bitmap; /* Inuse inodes bitmap */
925 1.103 perseant int lfs_nowrap; /* Suspend log wrap */
926 1.114 perseant int lfs_wrappass; /* Allow first log wrap requester to pass */
927 1.114 perseant int lfs_wrapstatus; /* Wrap status */
928 1.135 perseant int lfs_reclino; /* Inode being reclaimed */
929 1.169 dholland daddr_t lfs_startseg; /* Segment we started writing at */
930 1.104 perseant LIST_HEAD(, segdelta) lfs_segdhd; /* List of pending trunc accounting events */
931 1.159 dholland
932 1.159 dholland #ifdef _KERNEL
933 1.159 dholland /* ULFS-level information */
934 1.159 dholland u_int32_t um_flags; /* ULFS flags (below) */
935 1.159 dholland u_long um_nindir; /* indirect ptrs per block */
936 1.159 dholland u_long um_lognindir; /* log2 of um_nindir */
937 1.159 dholland u_long um_bptrtodb; /* indir ptr to disk block */
938 1.159 dholland u_long um_seqinc; /* inc between seq blocks */
939 1.159 dholland int um_maxsymlinklen;
940 1.159 dholland int um_dirblksiz;
941 1.159 dholland u_int64_t um_maxfilesize;
942 1.160 dholland
943 1.160 dholland /* Stuff used by quota2 code, not currently operable */
944 1.160 dholland unsigned lfs_use_quota2 : 1;
945 1.160 dholland uint32_t lfs_quota_magic;
946 1.160 dholland uint8_t lfs_quota_flags;
947 1.160 dholland uint64_t lfs_quotaino[2];
948 1.164 dholland
949 1.164 dholland /* Sleep address replacing &lfs_avail inside the on-disk superblock */
950 1.164 dholland /* XXX: should be replaced with a condvar */
951 1.164 dholland int lfs_availsleep;
952 1.164 dholland /* This one replaces &lfs_nextseg... all ditto */
953 1.164 dholland int lfs_nextsegsleep;
954 1.159 dholland #endif
955 1.1 mycroft };
956 1.1 mycroft
957 1.164 dholland /*
958 1.1 mycroft * Structures used by lfs_bmapv and lfs_markv to communicate information
959 1.1 mycroft * about inodes and data blocks.
960 1.1 mycroft */
961 1.1 mycroft typedef struct block_info {
962 1.174 dholland u_int64_t bi_inode; /* inode # */
963 1.174 dholland int64_t bi_lbn; /* logical block w/in file */
964 1.174 dholland int64_t bi_daddr; /* disk address of block */
965 1.174 dholland u_int64_t bi_segcreate; /* origin segment create time */
966 1.174 dholland int bi_version; /* file version number */
967 1.174 dholland int bi_size; /* size of the block (if fragment) */
968 1.174 dholland void *bi_bp; /* data buffer */
969 1.174 dholland } BLOCK_INFO;
970 1.174 dholland
971 1.174 dholland /* Compatibility for 7.0 binaries */
972 1.174 dholland typedef struct block_info_70 {
973 1.91 yamt u_int32_t bi_inode; /* inode # */
974 1.91 yamt int32_t bi_lbn; /* logical block w/in file */
975 1.91 yamt int32_t bi_daddr; /* disk address of block */
976 1.91 yamt u_int64_t bi_segcreate; /* origin segment create time */
977 1.1 mycroft int bi_version; /* file version number */
978 1.1 mycroft void *bi_bp; /* data buffer */
979 1.49 perseant int bi_size; /* size of the block (if fragment) */
980 1.174 dholland } BLOCK_INFO_70;
981 1.37 perseant
982 1.37 perseant /* Compatibility for 1.5 binaries */
983 1.37 perseant typedef struct block_info_15 {
984 1.91 yamt u_int32_t bi_inode; /* inode # */
985 1.91 yamt int32_t bi_lbn; /* logical block w/in file */
986 1.91 yamt int32_t bi_daddr; /* disk address of block */
987 1.91 yamt u_int32_t bi_segcreate; /* origin segment create time */
988 1.37 perseant int bi_version; /* file version number */
989 1.37 perseant void *bi_bp; /* data buffer */
990 1.49 perseant int bi_size; /* size of the block (if fragment) */
991 1.37 perseant } BLOCK_INFO_15;
992 1.1 mycroft
993 1.178 dholland /*
994 1.178 dholland * 32/64-bit-clean pointer to block pointers. This points into
995 1.178 dholland * already-existing storage; it is mostly used to access the block
996 1.178 dholland * pointers following a FINFO.
997 1.178 dholland */
998 1.178 dholland union lfs_blocks {
999 1.178 dholland int64_t *b64;
1000 1.178 dholland int32_t *b32;
1001 1.178 dholland };
1002 1.178 dholland
1003 1.1 mycroft /* In-memory description of a segment about to be written. */
1004 1.1 mycroft struct segment {
1005 1.5 mycroft struct lfs *fs; /* file system pointer */
1006 1.1 mycroft struct buf **bpp; /* pointer to buffer array */
1007 1.1 mycroft struct buf **cbpp; /* pointer to next available bp */
1008 1.1 mycroft struct buf **start_bpp; /* pointer to first bp in this set */
1009 1.5 mycroft struct buf *ibp; /* buffer pointer to inode page */
1010 1.138 dholland struct ulfs1_dinode *idp; /* pointer to ifile dinode */
1011 1.178 dholland FINFO *fip; /* current fileinfo pointer */
1012 1.5 mycroft struct vnode *vp; /* vnode being gathered */
1013 1.3 cgd void *segsum; /* segment summary info */
1014 1.3 cgd u_int32_t ninodes; /* number of inodes in this segment */
1015 1.50 perseant int32_t seg_bytes_left; /* bytes left in segment */
1016 1.50 perseant int32_t sum_bytes_left; /* bytes left in summary block */
1017 1.3 cgd u_int32_t seg_number; /* number of this segment */
1018 1.178 dholland union lfs_blocks start_lbp; /* beginning lbn for this set */
1019 1.5 mycroft
1020 1.135 perseant #define SEGM_CKP 0x0001 /* doing a checkpoint */
1021 1.135 perseant #define SEGM_CLEAN 0x0002 /* cleaner call; don't sort */
1022 1.135 perseant #define SEGM_SYNC 0x0004 /* wait for segment */
1023 1.135 perseant #define SEGM_PROT 0x0008 /* don't inactivate at segunlock */
1024 1.135 perseant #define SEGM_PAGEDAEMON 0x0010 /* pagedaemon called us */
1025 1.135 perseant #define SEGM_WRITERD 0x0020 /* LFS writed called us */
1026 1.135 perseant #define SEGM_FORCE_CKP 0x0040 /* Force checkpoint right away */
1027 1.135 perseant #define SEGM_RECLAIM 0x0080 /* Writing to reclaim vnode */
1028 1.135 perseant #define SEGM_SINGLE 0x0100 /* Opportunistic writevnodes */
1029 1.5 mycroft u_int16_t seg_flags; /* run-time flags for this segment */
1030 1.40 perseant u_int32_t seg_iocount; /* number of ios pending */
1031 1.49 perseant int ndupino; /* number of duplicate inodes */
1032 1.39 perseant };
1033 1.39 perseant
1034 1.1 mycroft /* Statistics Counters */
1035 1.77 perseant struct lfs_stats { /* Must match sysctl list in lfs_vfsops.h ! */
1036 1.5 mycroft u_int segsused;
1037 1.5 mycroft u_int psegwrites;
1038 1.5 mycroft u_int psyncwrites;
1039 1.5 mycroft u_int pcleanwrites;
1040 1.5 mycroft u_int blocktot;
1041 1.5 mycroft u_int cleanblocks;
1042 1.5 mycroft u_int ncheckpoints;
1043 1.5 mycroft u_int nwrites;
1044 1.5 mycroft u_int nsync_writes;
1045 1.5 mycroft u_int wait_exceeded;
1046 1.5 mycroft u_int write_exceeded;
1047 1.5 mycroft u_int flush_invoked;
1048 1.11 perseant u_int vflush_invoked;
1049 1.77 perseant u_int clean_inlocked;
1050 1.77 perseant u_int clean_vnlocked;
1051 1.87 perseant u_int segs_reclaimed;
1052 1.1 mycroft };
1053 1.51 perseant
1054 1.52 perseant /* Fcntls to take the place of the lfs syscalls */
1055 1.52 perseant struct lfs_fcntl_markv {
1056 1.51 perseant BLOCK_INFO *blkiov; /* blocks to relocate */
1057 1.173 dholland int blkcnt; /* number of blocks (limited to 65536) */
1058 1.51 perseant };
1059 1.51 perseant
1060 1.129 christos #define LFCNSEGWAITALL _FCNR_FSPRIV('L', 14, struct timeval)
1061 1.129 christos #define LFCNSEGWAIT _FCNR_FSPRIV('L', 15, struct timeval)
1062 1.174 dholland #define LFCNBMAPV _FCNRW_FSPRIV('L', 16, struct lfs_fcntl_markv)
1063 1.174 dholland #define LFCNMARKV _FCNRW_FSPRIV('L', 17, struct lfs_fcntl_markv)
1064 1.54 perseant #define LFCNRECLAIM _FCNO_FSPRIV('L', 4)
1065 1.109 martin
1066 1.112 martin struct lfs_fhandle {
1067 1.113 martin char space[28]; /* FHANDLE_SIZE_COMPAT (but used from userland too) */
1068 1.110 martin };
1069 1.86 perseant #define LFCNREWIND _FCNR_FSPRIV('L', 6, int)
1070 1.86 perseant #define LFCNINVAL _FCNR_FSPRIV('L', 7, int)
1071 1.86 perseant #define LFCNRESIZE _FCNR_FSPRIV('L', 8, int)
1072 1.108 perseant #define LFCNWRAPSTOP _FCNR_FSPRIV('L', 9, int)
1073 1.108 perseant #define LFCNWRAPGO _FCNR_FSPRIV('L', 10, int)
1074 1.112 martin #define LFCNIFILEFH _FCNW_FSPRIV('L', 11, struct lfs_fhandle)
1075 1.114 perseant #define LFCNWRAPPASS _FCNR_FSPRIV('L', 12, int)
1076 1.114 perseant # define LFS_WRAP_GOING 0x0
1077 1.114 perseant # define LFS_WRAP_WAITING 0x1
1078 1.114 perseant #define LFCNWRAPSTATUS _FCNW_FSPRIV('L', 13, int)
1079 1.130 pooka
1080 1.78 perseant /* Debug segment lock */
1081 1.78 perseant #ifdef notyet
1082 1.78 perseant # define ASSERT_SEGLOCK(fs) KASSERT(LFS_SEGLOCK_HELD(fs))
1083 1.78 perseant # define ASSERT_NO_SEGLOCK(fs) KASSERT(!LFS_SEGLOCK_HELD(fs))
1084 1.78 perseant # define ASSERT_DUNNO_SEGLOCK(fs)
1085 1.78 perseant # define ASSERT_MAYBE_SEGLOCK(fs)
1086 1.78 perseant #else /* !notyet */
1087 1.78 perseant # define ASSERT_DUNNO_SEGLOCK(fs) \
1088 1.78 perseant DLOG((DLOG_SEG, "lfs func %s seglock wrong (%d)\n", __func__, \
1089 1.78 perseant LFS_SEGLOCK_HELD(fs)))
1090 1.78 perseant # define ASSERT_SEGLOCK(fs) do { \
1091 1.78 perseant if (!LFS_SEGLOCK_HELD(fs)) { \
1092 1.78 perseant DLOG((DLOG_SEG, "lfs func %s seglock wrong (0)\n", __func__)); \
1093 1.78 perseant } \
1094 1.78 perseant } while(0)
1095 1.78 perseant # define ASSERT_NO_SEGLOCK(fs) do { \
1096 1.78 perseant if (LFS_SEGLOCK_HELD(fs)) { \
1097 1.78 perseant DLOG((DLOG_SEG, "lfs func %s seglock wrong (1)\n", __func__)); \
1098 1.78 perseant } \
1099 1.78 perseant } while(0)
1100 1.78 perseant # define ASSERT_MAYBE_SEGLOCK(x)
1101 1.78 perseant #endif /* !notyet */
1102 1.78 perseant
1103 1.145 dholland /*
1104 1.145 dholland * Arguments to mount LFS filesystems
1105 1.145 dholland */
1106 1.145 dholland struct ulfs_args {
1107 1.145 dholland char *fspec; /* block special device to mount */
1108 1.145 dholland };
1109 1.145 dholland
1110 1.94 christos __BEGIN_DECLS
1111 1.94 christos void lfs_itimes(struct inode *, const struct timespec *,
1112 1.94 christos const struct timespec *, const struct timespec *);
1113 1.94 christos __END_DECLS
1114 1.94 christos
1115 1.42 matt #endif /* !_UFS_LFS_LFS_H_ */
1116