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 #ifndef lint 19 static char sccsid[] = "@(#)pass5.c 5.10 (Berkeley) 02/01/90"; 20 #endif /* not lint */ 21 22 #include <sys/param.h> 23 #include <ufs/dinode.h> 24 #include <ufs/fs.h> 25 #include "fsck.h" 26 27 pass5() 28 { 29 int c, blk, frags, basesize, sumsize, mapsize, savednrpos; 30 register struct fs *fs = &sblock; 31 register struct cg *cg = &cgrp; 32 daddr_t dbase, dmax; 33 register daddr_t d; 34 register long i, j; 35 struct csum *cs; 36 time_t now; 37 struct csum cstotal; 38 struct inodesc idesc[3]; 39 char buf[MAXBSIZE]; 40 register struct cg *newcg = (struct cg *)buf; 41 struct ocg *ocg = (struct ocg *)buf; 42 43 bzero((char *)newcg, (int)fs->fs_cgsize); 44 newcg->cg_niblk = fs->fs_ipg; 45 switch ((int)fs->fs_postblformat) { 46 47 case FS_42POSTBLFMT: 48 basesize = (char *)(&ocg->cg_btot[0]) - (char *)(&ocg->cg_link); 49 sumsize = &ocg->cg_iused[0] - (char *)(&ocg->cg_btot[0]); 50 mapsize = &ocg->cg_free[howmany(fs->fs_fpg, NBBY)] - 51 (u_char *)&ocg->cg_iused[0]; 52 ocg->cg_magic = CG_MAGIC; 53 savednrpos = fs->fs_nrpos; 54 fs->fs_nrpos = 8; 55 break; 56 57 case FS_DYNAMICPOSTBLFMT: 58 newcg->cg_btotoff = 59 &newcg->cg_space[0] - (u_char *)(&newcg->cg_link); 60 newcg->cg_boff = 61 newcg->cg_btotoff + fs->fs_cpg * sizeof(long); 62 newcg->cg_iusedoff = newcg->cg_boff + 63 fs->fs_cpg * fs->fs_nrpos * sizeof(short); 64 newcg->cg_freeoff = 65 newcg->cg_iusedoff + howmany(fs->fs_ipg, NBBY); 66 newcg->cg_nextfreeoff = newcg->cg_freeoff + 67 howmany(fs->fs_cpg * fs->fs_spc / NSPF(fs), 68 NBBY); 69 newcg->cg_magic = CG_MAGIC; 70 basesize = &newcg->cg_space[0] - (u_char *)(&newcg->cg_link); 71 sumsize = newcg->cg_iusedoff - newcg->cg_btotoff; 72 mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff; 73 break; 74 75 default: 76 errexit("UNKNOWN ROTATIONAL TABLE FORMAT %d\n", 77 fs->fs_postblformat); 78 } 79 bzero((char *)&idesc[0], sizeof idesc); 80 for (i = 0; i < 3; i++) 81 idesc[i].id_type = ADDR; 82 bzero((char *)&cstotal, sizeof(struct csum)); 83 (void)time(&now); 84 for (i = fs->fs_size; i < fragroundup(fs, fs->fs_size); i++) 85 setbmap(i); 86 for (c = 0; c < fs->fs_ncg; c++) { 87 getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize); 88 if (!cg_chkmagic(cg)) 89 pfatal("CG %d: BAD MAGIC NUMBER\n", c); 90 dbase = cgbase(fs, c); 91 dmax = dbase + fs->fs_fpg; 92 if (dmax > fs->fs_size) 93 dmax = fs->fs_size; 94 if (now > cg->cg_time) 95 newcg->cg_time = cg->cg_time; 96 else 97 newcg->cg_time = now; 98 newcg->cg_cgx = c; 99 if (c == fs->fs_ncg - 1) 100 newcg->cg_ncyl = fs->fs_ncyl % fs->fs_cpg; 101 else 102 newcg->cg_ncyl = fs->fs_cpg; 103 newcg->cg_ndblk = dmax - dbase; 104 newcg->cg_cs.cs_ndir = 0; 105 newcg->cg_cs.cs_nffree = 0; 106 newcg->cg_cs.cs_nbfree = 0; 107 newcg->cg_cs.cs_nifree = fs->fs_ipg; 108 if (cg->cg_rotor < newcg->cg_ndblk) 109 newcg->cg_rotor = cg->cg_rotor; 110 else 111 newcg->cg_rotor = 0; 112 if (cg->cg_frotor < newcg->cg_ndblk) 113 newcg->cg_frotor = cg->cg_frotor; 114 else 115 newcg->cg_frotor = 0; 116 if (cg->cg_irotor < newcg->cg_niblk) 117 newcg->cg_irotor = cg->cg_irotor; 118 else 119 newcg->cg_irotor = 0; 120 bzero((char *)&newcg->cg_frsum[0], sizeof newcg->cg_frsum); 121 bzero((char *)&cg_blktot(newcg)[0], sumsize + mapsize); 122 if (fs->fs_postblformat == FS_42POSTBLFMT) 123 ocg->cg_magic = CG_MAGIC; 124 j = fs->fs_ipg * c; 125 for (i = 0; i < fs->fs_ipg; j++, i++) { 126 switch (statemap[j]) { 127 128 case USTATE: 129 break; 130 131 case DSTATE: 132 case DCLEAR: 133 case DFOUND: 134 newcg->cg_cs.cs_ndir++; 135 /* fall through */ 136 137 case FSTATE: 138 case FCLEAR: 139 newcg->cg_cs.cs_nifree--; 140 setbit(cg_inosused(newcg), i); 141 break; 142 143 default: 144 if (j < ROOTINO) 145 break; 146 errexit("BAD STATE %d FOR INODE I=%d", 147 statemap[j], j); 148 } 149 } 150 if (c == 0) 151 for (i = 0; i < ROOTINO; i++) { 152 setbit(cg_inosused(newcg), i); 153 newcg->cg_cs.cs_nifree--; 154 } 155 for (i = 0, d = dbase; 156 d < dmax; 157 d += fs->fs_frag, i += fs->fs_frag) { 158 frags = 0; 159 for (j = 0; j < fs->fs_frag; j++) { 160 if (testbmap(d + j)) 161 continue; 162 setbit(cg_blksfree(newcg), i + j); 163 frags++; 164 } 165 if (frags == fs->fs_frag) { 166 newcg->cg_cs.cs_nbfree++; 167 j = cbtocylno(fs, i); 168 cg_blktot(newcg)[j]++; 169 cg_blks(fs, newcg, j)[cbtorpos(fs, i)]++; 170 } else if (frags > 0) { 171 newcg->cg_cs.cs_nffree += frags; 172 blk = blkmap(fs, cg_blksfree(newcg), i); 173 fragacct(fs, blk, newcg->cg_frsum, 1); 174 } 175 } 176 cstotal.cs_nffree += newcg->cg_cs.cs_nffree; 177 cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree; 178 cstotal.cs_nifree += newcg->cg_cs.cs_nifree; 179 cstotal.cs_ndir += newcg->cg_cs.cs_ndir; 180 cs = &fs->fs_cs(fs, c); 181 if (bcmp((char *)&newcg->cg_cs, (char *)cs, sizeof *cs) != 0 && 182 dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) { 183 bcopy((char *)&newcg->cg_cs, (char *)cs, sizeof *cs); 184 sbdirty(); 185 } 186 if (cvtflag) { 187 bcopy((char *)newcg, (char *)cg, (int)fs->fs_cgsize); 188 cgdirty(); 189 continue; 190 } 191 if (bcmp(cg_inosused(newcg), 192 cg_inosused(cg), mapsize) != 0 && 193 dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) { 194 bcopy(cg_inosused(newcg), cg_inosused(cg), mapsize); 195 cgdirty(); 196 } 197 if ((bcmp((char *)newcg, (char *)cg, basesize) != 0 || 198 bcmp((char *)&cg_blktot(newcg)[0], 199 (char *)&cg_blktot(cg)[0], sumsize) != 0) && 200 dofix(&idesc[2], "SUMMARY INFORMATION BAD")) { 201 bcopy((char *)newcg, (char *)cg, basesize); 202 bcopy((char *)&cg_blktot(newcg)[0], 203 (char *)&cg_blktot(cg)[0], sumsize); 204 cgdirty(); 205 } 206 } 207 if (fs->fs_postblformat == FS_42POSTBLFMT) 208 fs->fs_nrpos = savednrpos; 209 if (bcmp((char *)&cstotal, (char *)&fs->fs_cstotal, sizeof *cs) != 0 210 && dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) { 211 bcopy((char *)&cstotal, (char *)&fs->fs_cstotal, sizeof *cs); 212 fs->fs_ronly = 0; 213 fs->fs_fmod = 0; 214 sbdirty(); 215 } 216 } 217