src/vfsck/pass5.c

   1 /*
   2  * Copyright (c) 1980, 1986 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that the above copyright notice and this paragraph are
   7  * duplicated in all such forms and that any documentation,
   8  * advertising materials, and other materials related to such
   9  * distribution and use acknowledge that the software was developed
  10  * by the University of California, Berkeley.  The name of the
  11  * University may not be used to endorse or promote products derived
  12  * from this software without specific prior written permission.
  13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16  */
  17
  18 #include <afsconfig.h>
  19 #include <afs/param.h>
  20
  21 #include <roken.h>
  22
  23 #include <ctype.h>
  24
  25 #define VICE
  26 #ifdef  AFS_OSF_ENV
  27 #include <sys/vnode.h>
  28 #include <sys/mount.h>
  29 #include <ufs/inode.h>
  30 #include <ufs/fs.h>
  31 #define _BSD
  32 #define _KERNEL
  33 #include <ufs/dir.h>
  34 #undef  _KERNEL
  35 #undef  _BSD
  36 #else /* AFS_OSF_ENV */
  37 #ifdef AFS_VFSINCL_ENV
  38 #include <sys/vnode.h>
  39 #ifdef    AFS_SUN5_ENV
  40 #include <sys/fs/ufs_inode.h>
  41 #include <sys/fs/ufs_fs.h>
  42 #define _KERNEL
  43 #include <sys/fs/ufs_fsdir.h>
  44 #undef _KERNEL
  45 #include <sys/fs/ufs_mount.h>
  46 #else
  47 #include <ufs/inode.h>
  48 #include <ufs/fs.h>
  49 #endif
  50 #else /* AFS_VFSINCL_ENV */
  51 #include <sys/inode.h>
  52 #ifdef  AFS_HPUX_ENV
  53 #define LONGFILENAMES   1
  54 #include <sys/sysmacros.h>
  55 #include <sys/ino.h>
  56 #endif
  57 #include <sys/fs.h>
  58 #endif /* AFS_VFSINCL_ENV */
  59 #endif /* AFS_OSF_ENV */
  60 #include <afs/osi_inode.h>
  61
  62 #include "fsck.h"
  63
  64 #if     defined(AFS_SUN_ENV) || defined(AFS_OSF_ENV)
  65 #define AFS_NEWCG_ENV
  66 #else
  67 #undef AFS_NEWCG_ENV
  68 #endif
  69
  70 #ifndef AFS_NEWCG_ENV
  71 /* define enough so this thing compiles! */
  72 #define FS_42POSTBLFMT          1
  73 #define FS_DYNAMICPOSTBLFMT     2
  74 #endif /* AFS_NEWCG_ENV */
  75
  76 pass5()
  77 {
  78     int c, blk, frags, basesize, sumsize, mapsize, savednrpos;
  79     struct fs *fs = &sblock;
  80     struct cg *cg = &cgrp;
  81     daddr_t dbase, dmax;
  82     daddr_t d;
  83     long i, j;
  84     struct csum *cs;
  85     time_t now;
  86     struct csum cstotal;
  87     struct inodesc idesc[3];
  88     char buf[MAXBSIZE];
  89     int postype;
  90
  91 #ifdef AFS_NEWCG_ENV
  92     struct cg *newcg = (struct cg *)buf;
  93     struct ocg *ocg = (struct ocg *)buf;
  94 #else /* AFS_NEWCG_ENV */
  95     /* don't bother with newcg format yet, most systems don't support it */
  96     struct cg *newcg = (struct cg *)buf;
  97     struct cg *ocg = (struct cg *)buf;
  98 #endif /* AFS_NEWCG_ENV */
  99
 100     memset(newcg, 0, (int)fs->fs_cgsize);
 101     newcg->cg_niblk = fs->fs_ipg;
 102 #ifdef AFS_NEWCG_ENV
 103     postype = (int)fs->fs_postblformat;
 104 #else /* AFS_NEWCG_ENV */
 105     postype = FS_42POSTBLFMT;
 106 #endif /* AFS_NEWCG_ENV */
 107     switch (postype) {
 108
 109     case FS_42POSTBLFMT:
 110         basesize = (char *)(&ocg->cg_btot[0]) - (char *)(&ocg->cg_link);
 111         sumsize = &ocg->cg_iused[0] - (char *)(&ocg->cg_btot[0]);
 112         mapsize =
 113             &ocg->cg_free[howmany(fs->fs_fpg, NBBY)] -
 114             (u_char *) & ocg->cg_iused[0];
 115         ocg->cg_magic = CG_MAGIC;
 116 #ifdef AFS_NEWCG_ENV
 117         savednrpos = fs->fs_nrpos;
 118         fs->fs_nrpos = 8;
 119 #endif /* AFS_NEWCG_ENV */
 120         break;
 121
 122 #ifdef AFS_NEWCG_ENV
 123     case FS_DYNAMICPOSTBLFMT:
 124         newcg->cg_btotoff =
 125 #ifdef  __alpha
 126             /* Matches decl in ufs/fs.h */
 127             &newcg->cg_space[0] - (u_char *) (&newcg->cg_link[0]);
 128 #else /* __alpha */
 129             &newcg->cg_space[0] - (u_char *) (&newcg->cg_link);
 130 #endif
 131         newcg->cg_boff = newcg->cg_btotoff + fs->fs_cpg * sizeof(afs_int32);
 132         newcg->cg_iusedoff =
 133             newcg->cg_boff + fs->fs_cpg * fs->fs_nrpos * sizeof(short);
 134         newcg->cg_freeoff = newcg->cg_iusedoff + howmany(fs->fs_ipg, NBBY);
 135         newcg->cg_nextfreeoff =
 136             newcg->cg_freeoff + howmany(fs->fs_cpg * fs->fs_spc / NSPF(fs),
 137                                         NBBY);
 138         newcg->cg_magic = CG_MAGIC;
 139 #ifdef  __alpha
 140         /* Matches decl in ufs/fs.h */
 141         basesize = &newcg->cg_space[0] - (u_char *) (&newcg->cg_link[0]);
 142 #else /* __alpha */
 143         basesize = &newcg->cg_space[0] - (u_char *) (&newcg->cg_link);
 144 #endif
 145         sumsize = newcg->cg_iusedoff - newcg->cg_btotoff;
 146         mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff;
 147         break;
 148
 149     default:
 150         errexit("UNKNOWN ROTATIONAL TABLE FORMAT %d\n", fs->fs_postblformat);
 151 #endif /* AFS_NEWCG_ENV */
 152
 153     }
 154     memset(&idesc[0], 0, sizeof idesc);
 155     for (i = 0; i < 3; i++)
 156         idesc[i].id_type = ADDR;
 157     memset(&cstotal, 0, sizeof(struct csum));
 158     (void)time(&now);
 159 #ifdef notdef
 160     /* this is the original from UCB/McKusick, but it is clearly wrong.  It is
 161      * rounding the # of fragments to the next 1024 (in our case, with a 1K/8K file system),
 162      * while instead it should be rounding to the next block.
 163      *
 164      * In addition, we should be sure that we allocate enough space, but that seems to be
 165      * ensured by the fact that the bitmap is rounded up to the nearest short, and that there
 166      * are never more than 16 frags per block.
 167      */
 168     for (i = fs->fs_size; i < fragroundup(fs, fs->fs_size); i++)
 169 #else
 170     c = 1 << fs->fs_fragshift;  /* unit to which we want to round */
 171     for (i = fs->fs_size; i < roundup(fs->fs_size, c); i++)
 172 #endif
 173         setbmap(i);
 174     for (c = 0; c < fs->fs_ncg; c++) {
 175         getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize);
 176 #ifdef AFS_NEWCG_ENV
 177         if (!cg_chkmagic(cg))
 178             pfatal("CG %d: BAD MAGIC NUMBER\n", c);
 179 #else /* AFS_NEWCG_ENV */
 180         if (cg->cg_magic != CG_MAGIC)
 181             pfatal("CG %d: BAD MAGIC NUMBER\n", c);
 182 #endif /* AFS_NEWCG_ENV */
 183         dbase = cgbase(fs, c);
 184         dmax = dbase + fs->fs_fpg;
 185         if (dmax > fs->fs_size)
 186             dmax = fs->fs_size;
 187         if (now > cg->cg_time)
 188             newcg->cg_time = cg->cg_time;
 189         else
 190             newcg->cg_time = now;
 191         newcg->cg_cgx = c;
 192         if (c == fs->fs_ncg - 1)
 193             newcg->cg_ncyl = fs->fs_ncyl % fs->fs_cpg;
 194         else
 195             newcg->cg_ncyl = fs->fs_cpg;
 196         newcg->cg_ndblk = dmax - dbase;
 197         newcg->cg_cs.cs_ndir = 0;
 198         newcg->cg_cs.cs_nffree = 0;
 199         newcg->cg_cs.cs_nbfree = 0;
 200         newcg->cg_cs.cs_nifree = fs->fs_ipg;
 201         if (cg->cg_rotor < newcg->cg_ndblk)
 202             newcg->cg_rotor = cg->cg_rotor;
 203         else
 204             newcg->cg_rotor = 0;
 205         if (cg->cg_frotor < newcg->cg_ndblk)
 206             newcg->cg_frotor = cg->cg_frotor;
 207         else
 208             newcg->cg_frotor = 0;
 209         if (cg->cg_irotor < newcg->cg_niblk)
 210             newcg->cg_irotor = cg->cg_irotor;
 211         else
 212             newcg->cg_irotor = 0;
 213         memset(&newcg->cg_frsum[0], 0, sizeof newcg->cg_frsum);
 214 #ifdef AFS_NEWCG_ENV
 215         memset(&cg_blktot(newcg)[0], 0, sumsize + mapsize);
 216 #else /* AFS_NEWCG_ENV */
 217         memset(newcg->cg_btot, 0, sizeof(newcg->cg_btot));
 218         memset(newcg->cg_b, 0, sizeof(newcg->cg_b));
 219         memset(newcg->cg_iused, 0, sizeof(newcg->cg_iused));
 220         memset(newcg->cg_free, 0, howmany(fs->fs_fpg, NBBY));
 221 #endif /* AFS_NEWCG_ENV */
 222 #ifdef AFS_NEWCG_ENV
 223         if (fs->fs_postblformat == FS_42POSTBLFMT)
 224             ocg->cg_magic = CG_MAGIC;
 225 #endif /* AFS_NEWCG_ENV */
 226         j = fs->fs_ipg * c;
 227         for (i = 0; i < fs->fs_ipg; j++, i++) {
 228 #if defined(ACLS) && defined(AFS_HPUX_ENV)
 229             switch (statemap[j] & STATE) {
 230 #else
 231             switch (statemap[j]) {
 232 #endif
 233             case USTATE:
 234                 break;
 235
 236             case DSTATE:
 237             case DCLEAR:
 238             case DFOUND:
 239                 newcg->cg_cs.cs_ndir++;
 240                 /* fall through */
 241
 242 #ifdef VICE
 243             case VSTATE:
 244 #endif /* VICE */
 245             case FSTATE:
 246             case FCLEAR:
 247                 newcg->cg_cs.cs_nifree--;
 248 #ifdef AFS_NEWCG_ENV
 249                 setbit(cg_inosused(newcg), i);
 250 #else
 251                 setbit(newcg->cg_iused, i);
 252 #endif /* AFS_NEWCG_ENV */
 253                 break;
 254
 255 #if defined(ACLS) && defined(AFS_HPUX_ENV)
 256                 /* hpux has more dynamic states (CSTATE, CRSTATE) */
 257             case CSTATE:
 258             case CRSTATE:
 259                 break;
 260 #endif
 261             default:
 262                 if (j < ROOTINO)
 263                     break;
 264                 errexit("BAD STATE %d FOR INODE I=%d", statemap[j], j);
 265             }
 266         }
 267         if (c == 0)
 268             for (i = 0; i < ROOTINO; i++) {
 269 #ifdef AFS_NEWCG_ENV
 270                 setbit(cg_inosused(newcg), i);
 271 #else
 272                 setbit(newcg->cg_iused, i);
 273 #endif /* AFS_NEWCG_ENV */
 274                 newcg->cg_cs.cs_nifree--;
 275             }
 276         for (i = 0, d = dbase; d < dmax; d += fs->fs_frag, i += fs->fs_frag) {
 277             frags = 0;
 278             for (j = 0; j < fs->fs_frag; j++) {
 279                 if (testbmap(d + j))
 280                     continue;
 281 #ifdef AFS_NEWCG_ENV
 282                 setbit(cg_blksfree(newcg), i + j);
 283 #else /* AFS_NEWCG_ENV */
 284                 setbit(newcg->cg_free, i + j);
 285 #endif /* AFS_NEWCG_ENV */
 286                 frags++;
 287             }
 288             if (frags == fs->fs_frag) {
 289                 newcg->cg_cs.cs_nbfree++;
 290                 j = cbtocylno(fs, i);
 291 #ifdef AFS_NEWCG_ENV
 292                 cg_blktot(newcg)[j]++;
 293                 cg_blks(fs, newcg, j)[cbtorpos(fs, i)]++;
 294 #else /* AFS_NEWCG_ENV */
 295                 newcg->cg_btot[j]++;
 296                 newcg->cg_b[j][cbtorpos(fs, i)]++;
 297 #endif /* AFS_NEWCG_ENV */
 298             } else if (frags > 0) {
 299                 newcg->cg_cs.cs_nffree += frags;
 300 #ifdef AFS_NEWCG_ENV
 301                 blk = blkmap(fs, cg_blksfree(newcg), i);
 302 #else /* AFS_NEWCG_ENV */
 303                 blk = blkmap(fs, newcg->cg_free, i);
 304 #endif /* AFS_NEWCG_ENV */
 305                 fragacct(fs, blk, newcg->cg_frsum, 1);
 306             }
 307         }
 308         cstotal.cs_nffree += newcg->cg_cs.cs_nffree;
 309         cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree;
 310         cstotal.cs_nifree += newcg->cg_cs.cs_nifree;
 311         cstotal.cs_ndir += newcg->cg_cs.cs_ndir;
 312         cs = &fs->fs_cs(fs, c);
 313         if (memcmp((char *)&newcg->cg_cs, (char *)cs, sizeof *cs) != 0
 314             && dofix(&idesc[0],
 315                      "FREE BLK COUNT(S) WRONG IN CYL GROUP (SUPERBLK)")) {
 316             memcpy((char *)cs, (char *)&newcg->cg_cs, sizeof *cs);
 317             sbdirty();
 318         }
 319 #ifdef AFS_NEWCG_ENV
 320         if (cvtflag) {
 321             memcpy((char *)cg, (char *)newcg, (int)fs->fs_cgsize);
 322             cgdirty();
 323             continue;
 324         }
 325 #endif /* AFS_NEWCG_ENV */
 326 #ifdef AFS_NEWCG_ENV
 327         if (memcmp(cg_inosused(newcg), cg_inosused(cg), mapsize) != 0
 328             && dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
 329             memcpy(cg_inosused(cg), cg_inosused(newcg), mapsize);
 330             cgdirty();
 331         }
 332 #else /* AFS_NEWCG_ENV */
 333         if (memcmp(newcg->cg_iused, cg->cg_iused, mapsize) != 0
 334             && dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
 335             memcpy(cg->cg_iused, newcg->cg_iused, mapsize);
 336             cgdirty();
 337         }
 338 #endif /* AFS_NEWCG_ENV */
 339         if ((memcmp((char *)newcg, (char *)cg, basesize) != 0 ||
 340 #ifdef AFS_NEWCG_ENV
 341              memcmp((char *)&cg_blktot(newcg)[0], (char *)&cg_blktot(cg)[0],
 342                     sumsize) != 0) &&
 343 #else /* AFS_NEWCG_ENV */
 344              memcmp((char *)newcg->cg_btot, (char *)cg->cg_btot,
 345                     sumsize) != 0) &&
 346 #endif /* AFS_NEWCG_ENV */
 347             dofix(&idesc[2], "SUMMARY INFORMATION BAD")) {
 348 #ifdef AFS_NEWCG_ENV
 349             memcpy((char *)cg, (char *)newcg, basesize);
 350             memcpy((char *)&cg_blktot(cg)[0], (char *)&cg_blktot(newcg)[0],
 351                    sumsize);
 352 #else /* AFS_NEWCG_ENV */
 353             memcpy((char *)cg, (char *)newcg, basesize);
 354             memcpy((char *)cg->cg_btot, (char *)newcg->cg_btot, sumsize);
 355 #endif /* AFS_NEWCG_ENV */
 356             cgdirty();
 357         }
 358     }
 359 #ifdef AFS_NEWCG_ENV
 360     if (fs->fs_postblformat == FS_42POSTBLFMT)
 361         fs->fs_nrpos = savednrpos;
 362 #endif /* AFS_NEWCG_ENV */
 363     if (memcmp((char *)&cstotal, (char *)&fs->fs_cstotal, sizeof *cs) != 0
 364         && dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
 365         memcpy((char *)&fs->fs_cstotal, (char *)&cstotal, sizeof *cs);
 366         fs->fs_ronly = 0;
 367         sbfine(fs);
 368         sbdirty();
 369     }
 370 }
 371
 372 /* returns true if sbdirty should be called */
 373 sbfine(fs)
 374      struct fs *fs;
 375 {
 376     int rcode;
 377     rcode = 0;
 378     if (fs->fs_fmod != 0) {
 379         fs->fs_fmod = 0;
 380         rcode = 1;
 381     }
 382     return rcode;
 383 }