1 /* $NetBSD: wapbl.c,v 1.6 2022/07/25 05:15:08 dholland Exp $ */
2
3 /*-
4 * Copyright (c) 2005,2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Wasabi Systems, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /* This file contains fsck support for wapbl
33 */
34 #define WAPBL_INTERNAL
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: wapbl.c,v 1.6 2022/07/25 05:15:08 dholland Exp $");
38
39 #include <sys/stat.h>
40 #include <sys/time.h>
41 #include <sys/uio.h>
42
43 #include <assert.h>
44 #include <errno.h>
45 #include <inttypes.h>
46 #include <stdio.h>
47 #include <stdbool.h>
48 #include <stdlib.h>
49 #include <string.h>
50 #include <unistd.h>
51
52 #include <ufs/ufs/dinode.h>
53 #include <ufs/ufs/dir.h>
54 #include <ufs/ufs/ufs_bswap.h>
55 #include <ufs/ufs/ufs_wapbl.h>
56 #include <ufs/ffs/fs.h>
57 #include <ufs/ffs/ffs_extern.h>
58
59 #include <sys/wapbl.h>
60
61 #include "fsck.h"
62 #include "fsutil.h"
63 #include "extern.h"
64 #include "exitvalues.h"
65
66 int
wapbl_write(void * data,size_t len,struct vnode * devvp,daddr_t pbn)67 wapbl_write(void *data, size_t len, struct vnode *devvp, daddr_t pbn)
68 {
69
70 WAPBL_PRINTF(WAPBL_PRINT_IO,
71 ("wapbl_write: %zd bytes at block %"PRId64" on fd 0x%x\n",
72 len, pbn, fswritefd));
73 bwrite(fswritefd, data, pbn, len);
74 return 0;
75 }
76
77 int
wapbl_read(void * data,size_t len,struct vnode * devvp,daddr_t pbn)78 wapbl_read(void *data, size_t len, struct vnode *devvp, daddr_t pbn)
79 {
80
81 WAPBL_PRINTF(WAPBL_PRINT_IO,
82 ("wapbl_read: %zd bytes at block %"PRId64" on fd 0x%x\n",
83 len, pbn, fsreadfd));
84 bread(fsreadfd, data, pbn, len);
85 return 0;
86 }
87
88 struct wapbl_replay *wapbl_replay;
89
90 void
replay_wapbl(void)91 replay_wapbl(void)
92 {
93 int error;
94
95 if (nflag) {
96 /*
97 * XXX: we ought to have a mode where we can replay
98 * the journal to memory, similar to what happens in
99 * the kernel with a readonly mount. For now though
100 * just print that we aren't doing it so as to avoid
101 * lying to the user.
102 */
103 pwarn("CANNOT REPLAY JOURNAL IN -n MODE; continuing anyway\n");
104 } else {
105 error = wapbl_replay_write(wapbl_replay, 0);
106 if (error) {
107 pfatal("UNABLE TO REPLAY JOURNAL BLOCKS");
108 if (reply("CONTINUE") == 0) {
109 exit(FSCK_EXIT_CHECK_FAILED);
110 }
111 } else {
112 wapbl_replay_stop(wapbl_replay);
113 }
114 }
115 {
116 int i;
117 for (i = 0; i < wapbl_replay->wr_inodescnt; i++) {
118 WAPBL_PRINTF(WAPBL_PRINT_REPLAY,("wapbl_replay: "
119 "not cleaning inode %"PRIu32" mode %"PRIo32"\n",
120 wapbl_replay->wr_inodes[i].wr_inumber,
121 wapbl_replay->wr_inodes[i].wr_imode));
122 }
123 }
124 }
125
126 void
cleanup_wapbl(void)127 cleanup_wapbl(void)
128 {
129
130 if (wapbl_replay) {
131 if (wapbl_replay_isopen(wapbl_replay))
132 wapbl_replay_stop(wapbl_replay);
133 wapbl_replay_free(wapbl_replay);
134 wapbl_replay = 0;
135 }
136 }
137
138 int
read_wapbl(char * buf,long size,daddr_t blk)139 read_wapbl(char *buf, long size, daddr_t blk)
140 {
141
142 if (!wapbl_replay || !wapbl_replay_isopen(wapbl_replay))
143 return 0;
144 return wapbl_replay_read(wapbl_replay, buf, blk, size);
145 }
146
147 int
is_journal_inode(ino_t ino)148 is_journal_inode(ino_t ino)
149 {
150 union dinode *dp;
151
152 dp = ginode(ino);
153 if ((iswap32(DIP(dp, flags)) & SF_LOG) != 0 &&
154 sblock->fs_journal_version == UFS_WAPBL_VERSION &&
155 sblock->fs_journal_location == UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM &&
156 sblock->fs_journallocs[UFS_WAPBL_INFS_INO] == ino)
157 return 1;
158
159 return 0;
160 }
161
162 int
check_wapbl(void)163 check_wapbl(void)
164 {
165 uint64_t addr = 0, count = 0, blksize = 0;
166 int error;
167 int ret = 0;
168 if (debug)
169 wapbl_debug_print = WAPBL_PRINT_ERROR | WAPBL_PRINT_REPLAY;
170 if (debug > 1)
171 wapbl_debug_print |= WAPBL_PRINT_IO;
172
173 if (sblock->fs_flags & FS_DOWAPBL) {
174 if (sblock->fs_journal_version != UFS_WAPBL_VERSION) {
175 pfatal("INVALID JOURNAL VERSION %d",
176 sblock->fs_journal_version);
177 if (reply("CONTINUE") == 0) {
178 exit(FSCK_EXIT_CHECK_FAILED);
179 }
180 pwarn("CLEARING EXISTING JOURNAL\n");
181 sblock->fs_flags &= ~FS_DOWAPBL;
182 sblock->fs_journal_flags = UFS_WAPBL_FLAGS_CLEAR_LOG;
183 sbdirty();
184 ret = FSCK_EXIT_CHECK_FAILED;
185 } else {
186 switch(sblock->fs_journal_location) {
187 case UFS_WAPBL_JOURNALLOC_END_PARTITION:
188 addr =
189 sblock->fs_journallocs[UFS_WAPBL_EPART_ADDR];
190 count =
191 sblock->fs_journallocs[UFS_WAPBL_EPART_COUNT];
192 blksize =
193 sblock->fs_journallocs[UFS_WAPBL_EPART_BLKSZ];
194 break;
195 case UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM:
196 addr =
197 sblock->fs_journallocs[UFS_WAPBL_INFS_ADDR];
198 count =
199 sblock->fs_journallocs[UFS_WAPBL_INFS_COUNT];
200 blksize =
201 sblock->fs_journallocs[UFS_WAPBL_INFS_BLKSZ];
202 break;
203 default:
204 pfatal("INVALID JOURNAL LOCATION %d",
205 sblock->fs_journal_location);
206 if (reply("CONTINUE") == 0) {
207 exit(FSCK_EXIT_CHECK_FAILED);
208 }
209 pwarn("CLEARING EXISTING JOURNAL\n");
210 sblock->fs_flags &= ~FS_DOWAPBL;
211 sblock->fs_journal_flags = UFS_WAPBL_FLAGS_CLEAR_LOG;
212 sblock->fs_journal_location =
213 UFS_WAPBL_JOURNALLOC_NONE;
214 sbdirty();
215 ret = FSCK_EXIT_CHECK_FAILED;
216 break;
217 }
218 if (sblock->fs_flags & FS_DOWAPBL) {
219 error = wapbl_replay_start(
220 &wapbl_replay, 0, addr, count, blksize);
221 if (error) {
222 pfatal(
223 "UNABLE TO READ JOURNAL FOR REPLAY");
224 if (reply("CONTINUE") == 0) {
225 exit(FSCK_EXIT_CHECK_FAILED);
226 }
227 pwarn("CLEARING EXISTING JOURNAL\n");
228 sblock->fs_flags &= ~FS_DOWAPBL;
229 sblock->fs_journal_flags = UFS_WAPBL_FLAGS_CLEAR_LOG;
230 sbdirty();
231 ret = FSCK_EXIT_CHECK_FAILED;
232 }
233 }
234 }
235 }
236 /*
237 * at this time fs_journal_flags can only be 0,
238 * UFS_WAPBL_FLAGS_CREATE_LOG or UFS_WAPBL_FLAGS_CLEAR_LOG.
239 * We can't have both flags at the same time.
240 */
241 switch (sblock->fs_journal_flags) {
242 case 0:
243 break;
244 case UFS_WAPBL_FLAGS_CREATE_LOG:
245 case UFS_WAPBL_FLAGS_CLEAR_LOG:
246 switch(sblock->fs_journal_location) {
247 case UFS_WAPBL_JOURNALLOC_END_PARTITION:
248 case UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM:
249 break;
250 case UFS_WAPBL_JOURNALLOC_NONE:
251 if (sblock->fs_journal_flags ==
252 UFS_WAPBL_FLAGS_CLEAR_LOG)
253 break;
254 /* FALLTHROUGH */
255 default:
256 pfatal("INVALID JOURNAL LOCATION %d",
257 sblock->fs_journal_location);
258 if (reply("CONTINUE") == 0) {
259 exit(FSCK_EXIT_CHECK_FAILED);
260 }
261 pwarn("CLEARING JOURNAL FLAGS\n");
262 sblock->fs_journal_flags = 0;
263 sblock->fs_journal_location =
264 UFS_WAPBL_JOURNALLOC_NONE;
265 sbdirty();
266 ret = FSCK_EXIT_CHECK_FAILED;
267 break;
268 }
269 break;
270 default:
271 pfatal("INVALID JOURNAL FLAGS %d",
272 sblock->fs_journal_flags);
273 if (reply("CONTINUE") == 0) {
274 exit(FSCK_EXIT_CHECK_FAILED);
275 }
276 pwarn("CLEARING JOURNAL FLAGS\n");
277 sblock->fs_journal_flags = 0;
278 sblock->fs_journal_location =
279 UFS_WAPBL_JOURNALLOC_NONE;
280 sbdirty();
281 ret = FSCK_EXIT_CHECK_FAILED;
282 break;
283 }
284 return ret;
285 }
286