1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static const char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #include <sys/proc.h> 47 #include <sys/mount.h> 48 #include <ufs/ufs/dinode.h> 49 #include <ufs/ffs/fs.h> 50 #include <fstab.h> 51 #include <stdlib.h> 52 #include <unistd.h> 53 #include <string.h> 54 #include <stdio.h> 55 #include "fsck.h" 56 static int argtoi __P((int flag, char *req, char *str, int base)); 57 static int docheck __P((struct fstab *fsp)); 58 static int checkfilesys __P((char *filesys, char *mntpt, long auxdata, 59 int child)); 60 61 int 62 main(argc, argv) 63 int argc; 64 char *argv[]; 65 { 66 int ch; 67 int ret, maxrun = 0; 68 extern char *optarg; 69 extern int optind; 70 71 sync(); 72 while ((ch = getopt(argc, argv, "dfpnNyYb:c:l:m:")) != EOF) { 73 switch (ch) { 74 case 'p': 75 preen++; 76 break; 77 78 case 'b': 79 bflag = argtoi('b', "number", optarg, 10); 80 printf("Alternate super block location: %d\n", bflag); 81 break; 82 83 case 'c': 84 cvtlevel = argtoi('c', "conversion level", optarg, 10); 85 break; 86 87 case 'd': 88 debug++; 89 break; 90 91 case 'f': 92 fflag++; 93 break; 94 95 case 'l': 96 maxrun = argtoi('l', "number", optarg, 10); 97 break; 98 99 case 'm': 100 lfmode = argtoi('m', "mode", optarg, 8); 101 if (lfmode &~ 07777) 102 errexit("bad mode to -m: %o\n", lfmode); 103 printf("** lost+found creation mode %o\n", lfmode); 104 break; 105 106 case 'n': 107 case 'N': 108 nflag++; 109 yflag = 0; 110 break; 111 112 case 'y': 113 case 'Y': 114 yflag++; 115 nflag = 0; 116 break; 117 118 default: 119 errexit("%c option?\n", ch); 120 } 121 } 122 argc -= optind; 123 argv += optind; 124 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 125 (void)signal(SIGINT, catch); 126 if (preen) 127 (void)signal(SIGQUIT, catchquit); 128 if (argc) { 129 while (argc-- > 0) 130 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 131 exit(0); 132 } 133 ret = checkfstab(preen, maxrun, docheck, checkfilesys); 134 if (returntosingle) 135 exit(2); 136 exit(ret); 137 } 138 139 int 140 argtoi(flag, req, str, base) 141 int flag; 142 char *req, *str; 143 int base; 144 { 145 char *cp; 146 int ret; 147 148 ret = (int)strtol(str, &cp, base); 149 if (cp == str || *cp) 150 errexit("-%c flag requires a %s\n", flag, req); 151 return (ret); 152 } 153 154 /* 155 * Determine whether a filesystem should be checked. 156 */ 157 int 158 docheck(fsp) 159 register struct fstab *fsp; 160 { 161 162 if (strcmp(fsp->fs_vfstype, "ufs") || 163 (strcmp(fsp->fs_type, FSTAB_RW) && 164 strcmp(fsp->fs_type, FSTAB_RO)) || 165 fsp->fs_passno == 0) 166 return (0); 167 return (1); 168 } 169 170 /* 171 * Check the specified filesystem. 172 */ 173 /* ARGSUSED */ 174 int 175 checkfilesys(filesys, mntpt, auxdata, child) 176 char *filesys, *mntpt; 177 long auxdata; 178 int child; 179 { 180 daddr_t n_ffree, n_bfree; 181 struct dups *dp; 182 struct zlncnt *zlnp; 183 int cylno; 184 185 if (preen && child) 186 (void)signal(SIGQUIT, voidquit); 187 cdevname = filesys; 188 if (debug && preen) 189 pwarn("starting\n"); 190 if (setup(filesys) == 0) { 191 if (preen) 192 pfatal("CAN'T CHECK FILE SYSTEM."); 193 return (0); 194 } 195 196 if (preen && sblock.fs_clean && !fflag) { 197 pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree + 198 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree); 199 printf("(%ld frags, %ld blocks, %.1f%% fragmentation)\n", 200 sblock.fs_cstotal.cs_nffree, 201 sblock.fs_cstotal.cs_nbfree, 202 (float)(sblock.fs_cstotal.cs_nffree * 100) / 203 sblock.fs_dsize); 204 return(0); 205 } 206 207 /* 208 * 1: scan inodes tallying blocks used 209 */ 210 if (preen == 0) { 211 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 212 if (hotroot) 213 printf("** Root file system\n"); 214 printf("** Phase 1 - Check Blocks and Sizes\n"); 215 } 216 pass1(); 217 218 /* 219 * 1b: locate first references to duplicates, if any 220 */ 221 if (duplist) { 222 if (preen) 223 pfatal("INTERNAL ERROR: dups with -p"); 224 printf("** Phase 1b - Rescan For More DUPS\n"); 225 pass1b(); 226 } 227 228 /* 229 * 2: traverse directories from root to mark all connected directories 230 */ 231 if (preen == 0) 232 printf("** Phase 2 - Check Pathnames\n"); 233 pass2(); 234 235 /* 236 * 3: scan inodes looking for disconnected directories 237 */ 238 if (preen == 0) 239 printf("** Phase 3 - Check Connectivity\n"); 240 pass3(); 241 242 /* 243 * 4: scan inodes looking for disconnected files; check reference counts 244 */ 245 if (preen == 0) 246 printf("** Phase 4 - Check Reference Counts\n"); 247 pass4(); 248 249 /* 250 * 5: check and repair resource counts in cylinder groups 251 */ 252 if (preen == 0) 253 printf("** Phase 5 - Check Cyl groups\n"); 254 pass5(); 255 256 /* 257 * print out summary statistics 258 */ 259 n_ffree = sblock.fs_cstotal.cs_nffree; 260 n_bfree = sblock.fs_cstotal.cs_nbfree; 261 pwarn("%ld files, %ld used, %ld free ", 262 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 263 printf("(%ld frags, %ld blocks, %ld.%ld%% fragmentation)\n", 264 n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize, 265 ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10); 266 if (debug && 267 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 268 printf("%ld files missing\n", n_files); 269 if (debug) { 270 n_blks += sblock.fs_ncg * 271 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 272 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 273 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 274 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 275 printf("%ld blocks missing\n", n_blks); 276 if (duplist != NULL) { 277 printf("The following duplicate blocks remain:"); 278 for (dp = duplist; dp; dp = dp->next) 279 printf(" %ld,", dp->dup); 280 printf("\n"); 281 } 282 if (zlnhead != NULL) { 283 printf("The following zero link count inodes remain:"); 284 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 285 printf(" %lu,", zlnp->zlncnt); 286 printf("\n"); 287 } 288 } 289 zlnhead = (struct zlncnt *)0; 290 duplist = (struct dups *)0; 291 muldup = (struct dups *)0; 292 inocleanup(); 293 if (fsmodified) { 294 (void)time(&sblock.fs_time); 295 sbdirty(); 296 } 297 if (cvtlevel && sblk.b_dirty) { 298 /* 299 * Write out the duplicate super blocks 300 */ 301 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 302 bwrite(fswritefd, (char *)&sblock, 303 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 304 } 305 ckfini(); 306 free(blockmap); 307 free(statemap); 308 free((char *)lncntp); 309 if (!fsmodified) 310 return (0); 311 if (!preen) 312 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 313 if (hotroot) { 314 struct statfs stfs_buf; 315 /* 316 * We modified the root. Do a mount update on 317 * it, unless it is read-write, so we can continue. 318 */ 319 if (statfs("/", &stfs_buf) == 0) { 320 long flags = stfs_buf.f_flags; 321 struct ufs_args args; 322 int ret; 323 324 if (flags & MNT_RDONLY) { 325 args.fspec = 0; 326 args.export.ex_flags = 0; 327 args.export.ex_root = 0; 328 flags |= MNT_UPDATE | MNT_RELOAD; 329 ret = mount(MOUNT_UFS, "/", flags, &args); 330 if (ret == 0) 331 return(0); 332 } 333 } 334 if (!preen) 335 printf("\n***** REBOOT NOW *****\n"); 336 sync(); 337 return (4); 338 } 339 return (0); 340 } 341