sbin/fsck_ffs/wapbl.c

   1 /*      $NetBSD: wapbl.c,v 1.3 2008/11/10 20:12:13 joerg 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 1.3 2008/11/10 20:12:13 joerg 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
  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
  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
  91 replay_wapbl(void)
  92 {
  93         int error;
  94
  95         if (!nflag) {
  96                 error = wapbl_replay_write(wapbl_replay, 0);
  97                 if (error) {
  98                         pfatal("UNABLE TO REPLAY JOURNAL BLOCKS");
  99                         if (reply("CONTINUE") == 0) {
 100                                 exit(FSCK_EXIT_CHECK_FAILED);
 101                         }
 102                 } else {
 103                         wapbl_replay_stop(wapbl_replay);
 104                 }
 105         }
 106         {
 107                 int i;
 108                 for (i = 0; i < wapbl_replay->wr_inodescnt; i++) {
 109                         WAPBL_PRINTF(WAPBL_PRINT_REPLAY,("wapbl_replay: "
 110                             "not cleaning inode %"PRIu32" mode %"PRIo32"\n",
 111                             wapbl_replay->wr_inodes[i].wr_inumber,
 112                             wapbl_replay->wr_inodes[i].wr_imode));
 113                 }
 114         }
 115 }
 116
 117 void
 118 cleanup_wapbl(void)
 119 {
 120
 121         if (wapbl_replay) {
 122                 if (wapbl_replay_isopen(wapbl_replay))
 123                         wapbl_replay_stop(wapbl_replay);
 124                 wapbl_replay_free(wapbl_replay);
 125                 wapbl_replay = 0;
 126         }
 127 }
 128
 129 int
 130 read_wapbl(char *buf, long size, daddr_t blk)
 131 {
 132
 133         if (!wapbl_replay || !wapbl_replay_isopen(wapbl_replay))
 134                 return 0;
 135         return wapbl_replay_read(wapbl_replay, buf, blk, size);
 136 }
 137
 138 int
 139 is_journal_inode(ino_t ino)
 140 {
 141         union dinode *dp;
 142
 143         dp = ginode(ino);
 144         if ((iswap32(DIP(dp, flags)) & SF_LOG) != 0 &&
 145             sblock->fs_journal_version == UFS_WAPBL_VERSION &&
 146             sblock->fs_journal_location == UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM &&
 147             sblock->fs_journallocs[UFS_WAPBL_INFS_INO] == ino)
 148                 return 1;
 149
 150         return 0;
 151 }
 152
 153 int
 154 check_wapbl(void)
 155 {
 156         uint64_t addr = 0, count = 0, blksize = 0;
 157         int error;
 158         int ret = 0;
 159         if (debug)
 160                 wapbl_debug_print = WAPBL_PRINT_ERROR | WAPBL_PRINT_REPLAY;
 161         if (debug > 1)
 162                 wapbl_debug_print |= WAPBL_PRINT_IO;
 163
 164         if (sblock->fs_flags & FS_DOWAPBL) {
 165                 if (sblock->fs_journal_version != UFS_WAPBL_VERSION) {
 166                         pfatal("INVALID JOURNAL VERSION %d",
 167                             sblock->fs_journal_version);
 168                         if (reply("CONTINUE") == 0) {
 169                                 exit(FSCK_EXIT_CHECK_FAILED);
 170                         }
 171                         pwarn("CLEARING EXISTING JOURNAL\n");
 172                         sblock->fs_flags &= ~FS_DOWAPBL;
 173                         sbdirty();
 174                         ret = FSCK_EXIT_CHECK_FAILED;
 175                 } else {
 176                         switch(sblock->fs_journal_location) {
 177                         case UFS_WAPBL_JOURNALLOC_END_PARTITION:
 178                                 addr =
 179                                   sblock->fs_journallocs[UFS_WAPBL_EPART_ADDR];
 180                                 count =
 181                                   sblock->fs_journallocs[UFS_WAPBL_EPART_COUNT];
 182                                 blksize =
 183                                   sblock->fs_journallocs[UFS_WAPBL_EPART_BLKSZ];
 184                                 break;
 185                         case UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM:
 186                                 addr =
 187                                   sblock->fs_journallocs[UFS_WAPBL_INFS_ADDR];
 188                                 count =
 189                                   sblock->fs_journallocs[UFS_WAPBL_INFS_COUNT];
 190                                 blksize =
 191                                   sblock->fs_journallocs[UFS_WAPBL_INFS_BLKSZ];
 192                                 break;
 193                         default:
 194                                 pfatal("INVALID JOURNAL LOCATION %d",
 195                                     sblock->fs_journal_location);
 196                                 if (reply("CONTINUE") == 0) {
 197                                         exit(FSCK_EXIT_CHECK_FAILED);
 198                                 }
 199                                 pwarn("CLEARING EXISTING JOURNAL\n");
 200                                 sblock->fs_flags &= ~FS_DOWAPBL;
 201                                 sblock->fs_journal_location =
 202                                     UFS_WAPBL_JOURNALLOC_NONE;
 203                                 sbdirty();
 204                                 ret = FSCK_EXIT_CHECK_FAILED;
 205                                 break;
 206                         }
 207                         if (sblock->fs_flags & FS_DOWAPBL) {
 208                                 error = wapbl_replay_start(
 209                                     &wapbl_replay, 0, addr, count, blksize);
 210                                 if (error) {
 211                                         pfatal(
 212                                            "UNABLE TO READ JOURNAL FOR REPLAY");
 213                                         if (reply("CONTINUE") == 0) {
 214                                                 exit(FSCK_EXIT_CHECK_FAILED);
 215                                         }
 216                                         pwarn("CLEARING EXISTING JOURNAL\n");
 217                                         sblock->fs_flags &= ~FS_DOWAPBL;
 218                                         sbdirty();
 219                                         ret = FSCK_EXIT_CHECK_FAILED;
 220                                 }
 221                         }
 222                 }
 223         }
 224         /*
 225          * at this time fs_journal_flags can only be 0,
 226          * UFS_WAPBL_FLAGS_CREATE_LOG or UFS_WAPBL_FLAGS_CLEAR_LOG.
 227          * We can't have both flags at the same time.
 228          */
 229         switch (sblock->fs_journal_flags) {
 230         case 0:
 231                 break;
 232         case UFS_WAPBL_FLAGS_CREATE_LOG:
 233         case UFS_WAPBL_FLAGS_CLEAR_LOG:
 234                 switch(sblock->fs_journal_location) {
 235                 case UFS_WAPBL_JOURNALLOC_END_PARTITION:
 236                 case UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM:
 237                         break;
 238                 case UFS_WAPBL_JOURNALLOC_NONE:
 239                         if (sblock->fs_journal_flags ==
 240                             UFS_WAPBL_FLAGS_CLEAR_LOG)
 241                                 break;
 242                         /* FALLTHROUGH */
 243                 default:
 244                         pfatal("INVALID JOURNAL LOCATION %d",
 245                             sblock->fs_journal_location);
 246                         if (reply("CONTINUE") == 0) {
 247                                 exit(FSCK_EXIT_CHECK_FAILED);
 248                         }
 249                         pwarn("CLEARING JOURNAL FLAGS\n");
 250                         sblock->fs_journal_flags = 0;
 251                         sblock->fs_journal_location =
 252                             UFS_WAPBL_JOURNALLOC_NONE;
 253                         sbdirty();
 254                         ret = FSCK_EXIT_CHECK_FAILED;
 255                         break;
 256                 }
 257                 break;
 258         default:
 259                 pfatal("INVALID JOURNAL FLAGS %d",
 260                     sblock->fs_journal_flags);
 261                 if (reply("CONTINUE") == 0) {
 262                         exit(FSCK_EXIT_CHECK_FAILED);
 263                 }
 264                 pwarn("CLEARING JOURNAL FLAGS\n");
 265                 sblock->fs_journal_flags = 0;
 266                 sblock->fs_journal_location =
 267                     UFS_WAPBL_JOURNALLOC_NONE;
 268                 sbdirty();
 269                 ret = FSCK_EXIT_CHECK_FAILED;
 270                 break;
 271         }
 272         return ret;
 273 }