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 8.6 (Berkeley) 5/14/95"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #include <sys/mount.h> 47 48 #include <ufs/ufs/dinode.h> 49 #include <ufs/ufs/ufsmount.h> 50 #include <ufs/ffs/fs.h> 51 52 #include <ctype.h> 53 #include <err.h> 54 #include <fstab.h> 55 #include <string.h> 56 57 #include "fsck.h" 58 59 int returntosingle; 60 61 static int argtoi __P((int flag, char *req, char *str, int base)); 62 static int docheck __P((struct fstab *fsp)); 63 static int checkfilesys __P((char *filesys, char *mntpt, long auxdata, 64 int child)); 65 int main __P((int argc, char *argv[])); 66 67 int 68 main(argc, argv) 69 int argc; 70 char *argv[]; 71 { 72 int ch; 73 int ret, maxrun = 0; 74 75 sync(); 76 while ((ch = getopt(argc, argv, "dfpnNyYb:c:l:m:")) != -1) { 77 switch (ch) { 78 case 'p': 79 preen++; 80 break; 81 82 case 'b': 83 bflag = argtoi('b', "number", optarg, 10); 84 printf("Alternate super block location: %d\n", bflag); 85 break; 86 87 case 'c': 88 cvtlevel = argtoi('c', "conversion level", optarg, 10); 89 break; 90 91 case 'd': 92 debug++; 93 break; 94 95 case 'f': 96 fflag++; 97 break; 98 99 case 'l': 100 maxrun = argtoi('l', "number", optarg, 10); 101 break; 102 103 case 'm': 104 lfmode = argtoi('m', "mode", optarg, 8); 105 if (lfmode &~ 07777) 106 errx(EEXIT, "bad mode to -m: %o", lfmode); 107 printf("** lost+found creation mode %o\n", lfmode); 108 break; 109 110 case 'n': 111 case 'N': 112 nflag++; 113 yflag = 0; 114 break; 115 116 case 'y': 117 case 'Y': 118 yflag++; 119 nflag = 0; 120 break; 121 122 default: 123 errx(EEXIT, "%c option?", ch); 124 } 125 } 126 argc -= optind; 127 argv += optind; 128 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 129 (void)signal(SIGINT, catch); 130 if (preen) 131 (void)signal(SIGQUIT, catchquit); 132 if (argc) { 133 while (argc-- > 0) 134 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0); 135 exit(0); 136 } 137 ret = checkfstab(preen, maxrun, docheck, checkfilesys); 138 if (returntosingle) 139 exit(2); 140 exit(ret); 141 } 142 143 static int 144 argtoi(flag, req, str, base) 145 int flag; 146 char *req, *str; 147 int base; 148 { 149 char *cp; 150 int ret; 151 152 ret = (int)strtol(str, &cp, base); 153 if (cp == str || *cp) 154 errx(EEXIT, "-%c flag requires a %s", flag, req); 155 return (ret); 156 } 157 158 /* 159 * Determine whether a filesystem should be checked. 160 */ 161 static int 162 docheck(fsp) 163 register struct fstab *fsp; 164 { 165 166 if (strcmp(fsp->fs_vfstype, "ufs") || 167 (strcmp(fsp->fs_type, FSTAB_RW) && 168 strcmp(fsp->fs_type, FSTAB_RO)) || 169 fsp->fs_passno == 0) 170 return (0); 171 return (1); 172 } 173 174 /* 175 * Check the specified filesystem. 176 */ 177 /* ARGSUSED */ 178 static int 179 checkfilesys(filesys, mntpt, auxdata, child) 180 char *filesys, *mntpt; 181 long auxdata; 182 int child; 183 { 184 ufs_daddr_t n_ffree, n_bfree; 185 struct dups *dp; 186 struct zlncnt *zlnp; 187 int cylno, flags; 188 189 if (preen && child) 190 (void)signal(SIGQUIT, voidquit); 191 cdevname = filesys; 192 if (debug && preen) 193 pwarn("starting\n"); 194 switch (setup(filesys)) { 195 case 0: 196 if (preen) 197 pfatal("CAN'T CHECK FILE SYSTEM."); 198 /* fall through */ 199 case -1: 200 pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree + 201 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree); 202 printf("(%ld frags, %ld blocks, %.1f%% fragmentation)\n", 203 sblock.fs_cstotal.cs_nffree, 204 sblock.fs_cstotal.cs_nbfree, 205 (float)(sblock.fs_cstotal.cs_nffree * 100) / 206 sblock.fs_dsize); 207 return(0); 208 } 209 210 /* 211 * 1: scan inodes tallying blocks used 212 */ 213 if (preen == 0) { 214 printf("** Last Mounted on %s\n", sblock.fs_fsmnt); 215 if (hotroot) 216 printf("** Root file system\n"); 217 printf("** Phase 1 - Check Blocks and Sizes\n"); 218 } 219 pass1(); 220 221 /* 222 * 1b: locate first references to duplicates, if any 223 */ 224 if (duplist) { 225 if (preen) 226 pfatal("INTERNAL ERROR: dups with -p"); 227 printf("** Phase 1b - Rescan For More DUPS\n"); 228 pass1b(); 229 } 230 231 /* 232 * 2: traverse directories from root to mark all connected directories 233 */ 234 if (preen == 0) 235 printf("** Phase 2 - Check Pathnames\n"); 236 pass2(); 237 238 /* 239 * 3: scan inodes looking for disconnected directories 240 */ 241 if (preen == 0) 242 printf("** Phase 3 - Check Connectivity\n"); 243 pass3(); 244 245 /* 246 * 4: scan inodes looking for disconnected files; check reference counts 247 */ 248 if (preen == 0) 249 printf("** Phase 4 - Check Reference Counts\n"); 250 pass4(); 251 252 /* 253 * 5: check and repair resource counts in cylinder groups 254 */ 255 if (preen == 0) 256 printf("** Phase 5 - Check Cyl groups\n"); 257 pass5(); 258 259 /* 260 * print out summary statistics 261 */ 262 n_ffree = sblock.fs_cstotal.cs_nffree; 263 n_bfree = sblock.fs_cstotal.cs_nbfree; 264 pwarn("%ld files, %ld used, %ld free ", 265 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree); 266 printf("(%ld frags, %ld blocks, %ld.%ld%% fragmentation)\n", 267 n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize, 268 ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10); 269 if (debug && 270 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree)) 271 printf("%ld files missing\n", n_files); 272 if (debug) { 273 n_blks += sblock.fs_ncg * 274 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); 275 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); 276 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize); 277 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree)) 278 printf("%ld blocks missing\n", n_blks); 279 if (duplist != NULL) { 280 printf("The following duplicate blocks remain:"); 281 for (dp = duplist; dp; dp = dp->next) 282 printf(" %ld,", dp->dup); 283 printf("\n"); 284 } 285 if (zlnhead != NULL) { 286 printf("The following zero link count inodes remain:"); 287 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 288 printf(" %lu,", zlnp->zlncnt); 289 printf("\n"); 290 } 291 } 292 zlnhead = (struct zlncnt *)0; 293 duplist = (struct dups *)0; 294 muldup = (struct dups *)0; 295 inocleanup(); 296 if (fsmodified) { 297 (void)time(&sblock.fs_time); 298 sbdirty(); 299 } 300 if (cvtlevel && sblk.b_dirty) { 301 /* 302 * Write out the duplicate super blocks 303 */ 304 for (cylno = 0; cylno < sblock.fs_ncg; cylno++) 305 bwrite(fswritefd, (char *)&sblock, 306 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE); 307 } 308 if (!hotroot) { 309 ckfini(1); 310 } else { 311 struct statfs stfs_buf; 312 /* 313 * Check to see if root is mounted read-write. 314 */ 315 if (statfs("/", &stfs_buf) == 0) 316 flags = stfs_buf.f_flags; 317 else 318 flags = 0; 319 ckfini(flags & MNT_RDONLY); 320 } 321 free(blockmap); 322 free(statemap); 323 free((char *)lncntp); 324 if (!fsmodified) 325 return (0); 326 if (!preen) 327 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 328 if (rerun) 329 printf("\n***** PLEASE RERUN FSCK *****\n"); 330 if (hotroot) { 331 struct ufs_args args; 332 int ret; 333 /* 334 * We modified the root. Do a mount update on 335 * it, unless it is read-write, so we can continue. 336 */ 337 if (flags & MNT_RDONLY) { 338 args.fspec = 0; 339 args.export.ex_flags = 0; 340 args.export.ex_root = 0; 341 flags |= MNT_UPDATE | MNT_RELOAD; 342 ret = mount("ufs", "/", flags, &args); 343 if (ret == 0) 344 return (0); 345 } 346 if (!preen) 347 printf("\n***** REBOOT NOW *****\n"); 348 sync(); 349 return (4); 350 } 351 return (0); 352 } 353