1 /* $NetBSD: main.c,v 1.41 2020/04/05 15:25:39 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1997 Manuel Bouyer. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 45 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 46 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 47 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 48 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 53 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <sys/cdefs.h> 57 #ifndef lint 58 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\ 59 The Regents of the University of California. All rights reserved."); 60 #endif /* not lint */ 61 62 #ifndef lint 63 #if 0 64 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/23/94"; 65 #else 66 __RCSID("$NetBSD: main.c,v 1.41 2020/04/05 15:25:39 joerg Exp $"); 67 #endif 68 #endif /* not lint */ 69 70 #include <sys/param.h> 71 #include <sys/time.h> 72 #include <sys/mount.h> 73 #include <ufs/ufs/ufsmount.h> 74 #include <ufs/ext2fs/ext2fs_dinode.h> 75 #include <ufs/ext2fs/ext2fs.h> 76 #include <fstab.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <ctype.h> 80 #include <stdio.h> 81 #include <time.h> 82 #include <unistd.h> 83 #include <signal.h> 84 85 #include "fsck.h" 86 #include "extern.h" 87 #include "fsutil.h" 88 #include "exitvalues.h" 89 90 struct bufarea bufhead; 91 struct bufarea sblk; 92 struct bufarea asblk; 93 struct bufarea *pdirbp; 94 struct bufarea *pbp; 95 struct bufarea *getdatablk(daddr_t, long); 96 struct m_ext2fs sblock; 97 struct dups *duplist; 98 struct dups *muldup; 99 struct zlncnt *zlnhead; 100 struct inoinfo **inphead, **inpsort; 101 long numdirs, listmax, inplast; 102 long dev_bsize; 103 long secsize; 104 char nflag; 105 char yflag; 106 int bflag; 107 int Uflag; 108 int debug; 109 int preen; 110 char havesb; 111 char skipclean; 112 int fsmodified; 113 int fsreadfd; 114 int fswritefd; 115 int rerun; 116 daddr_t maxfsblock; 117 char *blockmap; 118 ino_t maxino; 119 ino_t lastino; 120 char *statemap; 121 u_char *typemap; 122 int16_t *lncntp; 123 ino_t lfdir; 124 daddr_t n_blks; 125 daddr_t n_files; 126 struct ext2fs_dinode zino; 127 128 static int argtoi(int, const char *, const char *, int); 129 static int checkfilesys(const char *, char *, long, int); 130 static void usage(void) __dead; 131 132 int 133 main(int argc, char *argv[]) 134 { 135 int ch; 136 int ret = FSCK_EXIT_OK; 137 138 ckfinish = ckfini; 139 sync(); 140 skipclean = 1; 141 while ((ch = getopt(argc, argv, "b:dfm:npPqUy")) != -1) { 142 switch (ch) { 143 case 'b': 144 skipclean = 0; 145 bflag = argtoi('b', "number", optarg, 10); 146 printf("Alternate super block location: %d\n", bflag); 147 break; 148 149 case 'd': 150 debug++; 151 break; 152 153 case 'f': 154 skipclean = 0; 155 break; 156 157 case 'm': 158 lfmode = argtoi('m', "mode", optarg, 8); 159 if (lfmode &~ 07777) 160 errexit("bad mode to -m: %o", lfmode); 161 printf("** lost+found creation mode %o\n", lfmode); 162 break; 163 164 case 'n': 165 nflag++; 166 yflag = 0; 167 break; 168 169 case 'p': 170 preen++; 171 break; 172 173 case 'P': 174 /* Progress meter not implemented. */ 175 break; 176 177 case 'q': /* Quiet not implemented */ 178 break; 179 180 #ifndef SMALL 181 case 'U': 182 Uflag++; 183 break; 184 #endif 185 186 case 'y': 187 yflag++; 188 nflag = 0; 189 break; 190 191 default: 192 usage(); 193 } 194 } 195 196 argc -= optind; 197 argv += optind; 198 199 if (!argc) 200 usage(); 201 202 if (signal(SIGINT, SIG_IGN) != SIG_IGN) 203 (void)signal(SIGINT, catch); 204 if (preen) 205 (void)signal(SIGQUIT, catchquit); 206 207 while (argc-- > 0) { 208 int nret = checkfilesys(blockcheck(*argv++), 0, 0L, 0); 209 if (ret < nret) 210 ret = nret; 211 } 212 213 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret; 214 } 215 216 static int 217 argtoi(int flag, const char *req, const char *str, int base) 218 { 219 char *cp; 220 int ret; 221 222 ret = (int)strtol(str, &cp, base); 223 if (cp == str || *cp) 224 errexit("-%c flag requires a %s", flag, req); 225 return (ret); 226 } 227 228 /* 229 * Check the specified filesystem. 230 */ 231 /* ARGSUSED */ 232 static int 233 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child) 234 { 235 daddr_t n_bfree; 236 struct dups *dp; 237 struct zlncnt *zlnp; 238 int i; 239 240 if (preen && child) 241 (void)signal(SIGQUIT, voidquit); 242 setcdevname(filesys, preen); 243 if (debug && preen) 244 pwarn("starting\n"); 245 switch (setup(filesys)) { 246 case 0: 247 if (preen) 248 pfatal("CAN'T CHECK FILE SYSTEM."); 249 /* FALLTHROUGH */ 250 case -1: 251 return FSCK_EXIT_OK; 252 } 253 /* 254 * 1: scan inodes tallying blocks used 255 */ 256 if (preen == 0) { 257 if (sblock.e2fs.e2fs_rev > E2FS_REV0) { 258 printf("** Last Mounted on %s\n", 259 sblock.e2fs.e2fs_fsmnt); 260 } 261 if (hotroot()) 262 printf("** Root file system\n"); 263 printf("** Phase 1 - Check Blocks and Sizes\n"); 264 } 265 pass1(); 266 267 /* 268 * 1b: locate first references to duplicates, if any 269 */ 270 if (duplist) { 271 if (preen) 272 pfatal("INTERNAL ERROR: dups with -p"); 273 printf("** Phase 1b - Rescan For More DUPS\n"); 274 pass1b(); 275 } 276 277 /* 278 * 2: traverse directories from root to mark all connected directories 279 */ 280 if (preen == 0) 281 printf("** Phase 2 - Check Pathnames\n"); 282 pass2(); 283 284 /* 285 * 3: scan inodes looking for disconnected directories 286 */ 287 if (preen == 0) 288 printf("** Phase 3 - Check Connectivity\n"); 289 pass3(); 290 291 /* 292 * 4: scan inodes looking for disconnected files; check reference counts 293 */ 294 if (preen == 0) 295 printf("** Phase 4 - Check Reference Counts\n"); 296 pass4(); 297 298 /* 299 * 5: check and repair resource counts in cylinder groups 300 */ 301 if (preen == 0) 302 printf("** Phase 5 - Check Cyl groups\n"); 303 pass5(); 304 305 /* 306 * print out summary statistics 307 */ 308 n_bfree = sblock.e2fs.e2fs_fbcount; 309 310 pwarn("%lld files, %lld used, %lld free\n", 311 (long long)n_files, (long long)n_blks, (long long)n_bfree); 312 if (debug && 313 /* 9 reserved and unused inodes in FS */ 314 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount)) 315 printf("%lld files missing\n", (long long)n_files); 316 if (debug) { 317 for (i = 0; i < sblock.e2fs_ncg; i++) 318 n_blks += cgoverhead(i); 319 n_blks += sblock.e2fs.e2fs_first_dblock; 320 if (n_blks -= maxfsblock - n_bfree) 321 printf("%lld blocks missing\n", (long long)n_blks); 322 if (duplist != NULL) { 323 printf("The following duplicate blocks remain:"); 324 for (dp = duplist; dp; dp = dp->next) 325 printf(" %lld,", (long long)dp->dup); 326 printf("\n"); 327 } 328 if (zlnhead != NULL) { 329 printf("The following zero link count inodes remain:"); 330 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) 331 printf(" %llu,", 332 (unsigned long long)zlnp->zlncnt); 333 printf("\n"); 334 } 335 } 336 zlnhead = (struct zlncnt *)0; 337 duplist = (struct dups *)0; 338 muldup = (struct dups *)0; 339 inocleanup(); 340 if (fsmodified) { 341 time_t t; 342 (void)time(&t); 343 sblock.e2fs.e2fs_wtime = t; 344 sblock.e2fs.e2fs_lastfsck = t; 345 sbdirty(); 346 } 347 ckfini(1); 348 free(blockmap); 349 free(statemap); 350 free((char *)lncntp); 351 if (!fsmodified) 352 return FSCK_EXIT_OK; 353 if (!preen) 354 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 355 if (rerun) 356 printf("\n***** PLEASE RERUN FSCK *****\n"); 357 if (hotroot()) { 358 struct statvfs stfs_buf; 359 /* 360 * We modified the root. Do a mount update on 361 * it, unless it is read-write, so we can continue. 362 */ 363 if (statvfs("/", &stfs_buf) == 0) { 364 long flags = stfs_buf.f_flag; 365 struct ufs_args args; 366 367 if (flags & MNT_RDONLY) { 368 args.fspec = 0; 369 flags |= MNT_UPDATE | MNT_RELOAD; 370 if (mount(MOUNT_EXT2FS, "/", flags, 371 &args, sizeof args) == 0) 372 return FSCK_EXIT_OK; 373 } 374 } 375 if (!preen) 376 printf("\n***** REBOOT NOW *****\n"); 377 sync(); 378 return FSCK_EXIT_ROOT_CHANGED; 379 } 380 return FSCK_EXIT_OK; 381 } 382 383 static void 384 usage(void) 385 { 386 387 (void) fprintf(stderr, 388 "usage: %s [-dfnpUy] [-b block] [-m mode] filesystem ...\n", 389 getprogname()); 390 exit(FSCK_EXIT_USAGE); 391 } 392
Indexes created Sun Sep 28 07:09:56 GMT 2025