pass5.c revision 1.1
1 /* $NetBSD: pass5.c,v 1.1 1997/06/11 11:21:58 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Manuel Bouyer. 5 * Copyright (c) 1980, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)pass5.c 8.6 (Berkeley) 11/30/94"; 40 #else 41 static char rcsid[] = "$NetBSD: pass5.c,v 1.1 1997/06/11 11:21:58 bouyer Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/time.h> 47 #include <ufs/ext2fs/ext2fs_dinode.h> 48 #include <ufs/ext2fs/ext2fs.h> 49 #include <ufs/ext2fs/ext2fs_extern.h> 50 #include <string.h> 51 #include <malloc.h> 52 #include <stdio.h> 53 54 #include "fsutil.h" 55 #include "fsck.h" 56 #include "extern.h" 57 58 59 void print_bmap __P((u_char *,u_int32_t)); 60 61 void 62 pass5() 63 { 64 int c, blk, frags, basesize, sumsize, mapsize, savednrpos; 65 register struct m_ext2fs *fs = &sblock; 66 daddr_t dbase, dmax; 67 register daddr_t d; 68 register long i, j; 69 struct inodesc idesc[3]; 70 struct bufarea *ino_bitmap = NULL, *blk_bitmap = NULL; 71 char *ibmap, *bbmap; 72 u_int32_t cs_ndir, cs_nbfree, cs_nifree; 73 char msg[255]; 74 75 cs_ndir = 0; 76 cs_nbfree = 0; 77 cs_nifree = 0; 78 79 ibmap = malloc(fs->e2fs_bsize); 80 bbmap = malloc(fs->e2fs_bsize); 81 if (ibmap == NULL || bbmap == NULL) { 82 errexit("out of memory\n"); 83 } 84 85 for (c = 0; c < fs->e2fs_ncg; c++) { 86 u_int32_t nbfree = 0; 87 u_int32_t nifree = 0; 88 u_int32_t ndirs = 0; 89 90 nbfree = 0; 91 nifree = fs->e2fs.e2fs_ipg; 92 ndirs = 0; 93 94 if (blk_bitmap == NULL) { 95 blk_bitmap = getdatablk(fs->e2fs_gd[c].ext2bgd_b_bitmap, 96 fs->e2fs_bsize); 97 } else { 98 getblk(blk_bitmap, fs->e2fs_gd[c].ext2bgd_b_bitmap, 99 fs->e2fs_bsize); 100 } 101 if (ino_bitmap == NULL) { 102 ino_bitmap = getdatablk(fs->e2fs_gd[c].ext2bgd_i_bitmap, 103 fs->e2fs_bsize); 104 } else { 105 getblk(ino_bitmap, fs->e2fs_gd[c].ext2bgd_i_bitmap, 106 fs->e2fs_bsize); 107 } 108 memset(bbmap, 0, fs->e2fs_bsize); 109 memset(ibmap, 0, fs->e2fs_bsize); 110 memset(&idesc[0], 0, sizeof idesc); 111 for (i = 0; i < 3; i++) { 112 idesc[i].id_type = ADDR; 113 } 114 115 j = fs->e2fs.e2fs_ipg * c + 1; 116 117 for (i = 0; i < fs->e2fs.e2fs_ipg; j++, i++) { 118 if ((j < EXT2_FIRSTINO) && (j != EXT2_ROOTINO)) { 119 setbit(ibmap, i); 120 nifree--; 121 continue; 122 } 123 if (j > fs->e2fs.e2fs_icount) { 124 setbit(ibmap, i); 125 continue; 126 } 127 switch (statemap[j]) { 128 129 case USTATE: 130 break; 131 132 case DSTATE: 133 case DCLEAR: 134 case DFOUND: 135 ndirs++; 136 /* fall through */ 137 138 case FSTATE: 139 case FCLEAR: 140 nifree--; 141 setbit(ibmap, i); 142 break; 143 144 default: 145 errexit("BAD STATE %d FOR INODE I=%d\n", 146 statemap[j], j); 147 } 148 } 149 150 /* fill in unused par of the inode map */ 151 for (i = fs->e2fs.e2fs_ipg / NBBY; i < fs->e2fs_bsize; i++) 152 ibmap[i] = 0xff; 153 154 dbase = c * sblock.e2fs.e2fs_bpg + sblock.e2fs.e2fs_first_dblock + 155 cgoverhead; 156 dmax = (c+1) * sblock.e2fs.e2fs_bpg + sblock.e2fs.e2fs_first_dblock; 157 158 for (i = 0; i < cgoverhead; i++) 159 setbit(bbmap, i); /* blks allocated to fs metadata */ 160 for (i = cgoverhead, d = dbase; 161 d < dmax; 162 d ++, i ++) { 163 if (testbmap(d) || d >= sblock.e2fs.e2fs_bcount) { 164 setbit(bbmap, i); 165 continue; 166 } else { 167 nbfree++; 168 } 169 170 } 171 cs_nbfree += nbfree; 172 cs_nifree += nifree; 173 cs_ndir += ndirs; 174 175 if (debug && (fs->e2fs_gd[c].ext2bgd_nbfree != nbfree || 176 fs->e2fs_gd[c].ext2bgd_nifree != nifree || 177 fs->e2fs_gd[c].ext2bgd_ndirs != ndirs)) { 178 printf("summary info for cg %d is %d, %d, %d," 179 "should be %d, %d, %d\n", c, 180 fs->e2fs_gd[c].ext2bgd_nbfree, 181 fs->e2fs_gd[c].ext2bgd_nifree, 182 fs->e2fs_gd[c].ext2bgd_ndirs, 183 nbfree, 184 nifree, 185 ndirs); 186 } 187 snprintf(msg, 255, "SUMMARY INFORMATIONS WRONG FOR CG #%d", c); 188 if ((fs->e2fs_gd[c].ext2bgd_nbfree != nbfree || 189 fs->e2fs_gd[c].ext2bgd_nifree != nifree || 190 fs->e2fs_gd[c].ext2bgd_ndirs != ndirs) && 191 dofix(&idesc[0], msg)) { 192 fs->e2fs_gd[c].ext2bgd_nbfree = nbfree; 193 fs->e2fs_gd[c].ext2bgd_nifree = nifree; 194 fs->e2fs_gd[c].ext2bgd_ndirs = ndirs; 195 sbdirty(); 196 } 197 198 if (debug && memcmp(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize)) { 199 printf("blk_bitmap:\n"); 200 print_bmap(blk_bitmap->b_un.b_buf, fs->e2fs_bsize); 201 printf("bbmap:\n"); 202 print_bmap(bbmap, fs->e2fs_bsize); 203 } 204 205 snprintf(msg, 255, "BLK(S) MISSING IN BIT MAPS #%d", c); 206 if (memcmp(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize) && 207 dofix(&idesc[1], msg)) { 208 memcpy(blk_bitmap->b_un.b_buf, bbmap, fs->e2fs_bsize); 209 dirty(blk_bitmap); 210 } 211 if (debug && memcmp(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize)) { 212 printf("ino_bitmap:\n"); 213 print_bmap(ino_bitmap->b_un.b_buf, fs->e2fs_bsize); 214 printf("ibmap:\n"); 215 print_bmap(ibmap, fs->e2fs_bsize); 216 } 217 snprintf(msg, 255, "INODE(S) MISSING IN BIT MAPS #%d", c); 218 if (memcmp(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize) && 219 dofix(&idesc[1], msg)) { 220 memcpy(ino_bitmap->b_un.b_buf, ibmap, fs->e2fs_bsize); 221 dirty(ino_bitmap); 222 } 223 224 } 225 if (debug && (fs->e2fs.e2fs_fbcount != cs_nbfree || 226 fs->e2fs.e2fs_ficount != cs_nifree)) { 227 printf("summary info bad in superblock: %d, %d should be %d, %d\n", 228 fs->e2fs.e2fs_fbcount, fs->e2fs.e2fs_ficount, 229 cs_nbfree, cs_nifree); 230 } 231 if ((fs->e2fs.e2fs_fbcount != cs_nbfree || 232 fs->e2fs.e2fs_ficount != cs_nifree) 233 && dofix(&idesc[0], "SUPERBLK SUMMARY INFORMATION BAD")) { 234 fs->e2fs.e2fs_fbcount = cs_nbfree; 235 fs->e2fs.e2fs_ficount = cs_nifree; 236 sbdirty(); 237 } 238 } 239 240 void 241 print_bmap(map, size) 242 u_char *map; 243 u_int32_t size; 244 { 245 int i, j; 246 247 i = 0; 248 while (i < size) { 249 printf("%u: ",i); 250 for (j = 0; j < 16; j++, i++) 251 printf("%2x ", (u_int)map[i]) & 0xff; 252 printf("\n"); 253 } 254 } 255
Indexes created Mon Sep 22 21:09:42 GMT 2025