1 /* $NetBSD: main.c,v 1.37 2011/06/09 19:57:51 christos 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 1.37 2011/06/09 19:57:51 christos 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 volatile sig_atomic_t returntosingle = 0;
91
92
93 static int argtoi(int, const char *, const char *, int);
94 static int checkfilesys(const char *, char *, long, int);
95 static void usage(void) __dead;
96
97 int
main(int argc,char * argv[])98 main(int argc, char *argv[])
99 {
100 int ch;
101 int ret = FSCK_EXIT_OK;
102
103 ckfinish = ckfini;
104 sync();
105 skipclean = 1;
106 while ((ch = getopt(argc, argv, "b:dfm:npPqUy")) != -1) {
107 switch (ch) {
108 case 'b':
109 skipclean = 0;
110 bflag = argtoi('b', "number", optarg, 10);
111 printf("Alternate super block location: %d\n", bflag);
112 break;
113
114 case 'd':
115 debug++;
116 break;
117
118 case 'f':
119 skipclean = 0;
120 break;
121
122 case 'm':
123 lfmode = argtoi('m', "mode", optarg, 8);
124 if (lfmode &~ 07777)
125 errexit("bad mode to -m: %o", lfmode);
126 printf("** lost+found creation mode %o\n", lfmode);
127 break;
128
129 case 'n':
130 nflag++;
131 yflag = 0;
132 break;
133
134 case 'p':
135 preen++;
136 break;
137
138 case 'P':
139 /* Progress meter not implemented. */
140 break;
141
142 case 'q': /* Quiet not implemented */
143 break;
144
145 #ifndef SMALL
146 case 'U':
147 Uflag++;
148 break;
149 #endif
150
151 case 'y':
152 yflag++;
153 nflag = 0;
154 break;
155
156 default:
157 usage();
158 }
159 }
160
161 argc -= optind;
162 argv += optind;
163
164 if (!argc)
165 usage();
166
167 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
168 (void)signal(SIGINT, catch);
169 if (preen)
170 (void)signal(SIGQUIT, catchquit);
171
172 while (argc-- > 0) {
173 int nret = checkfilesys(blockcheck(*argv++), 0, 0L, 0);
174 if (ret < nret)
175 ret = nret;
176 }
177
178 return returntosingle ? FSCK_EXIT_UNRESOLVED : ret;
179 }
180
181 static int
argtoi(int flag,const char * req,const char * str,int base)182 argtoi(int flag, const char *req, const char *str, int base)
183 {
184 char *cp;
185 int ret;
186
187 ret = (int)strtol(str, &cp, base);
188 if (cp == str || *cp)
189 errexit("-%c flag requires a %s", flag, req);
190 return (ret);
191 }
192
193 /*
194 * Check the specified filesystem.
195 */
196 /* ARGSUSED */
197 static int
checkfilesys(const char * filesys,char * mntpt,long auxdata,int child)198 checkfilesys(const char *filesys, char *mntpt, long auxdata, int child)
199 {
200 daddr_t n_bfree;
201 struct dups *dp;
202 struct zlncnt *zlnp;
203 int i;
204
205 if (preen && child)
206 (void)signal(SIGQUIT, voidquit);
207 setcdevname(filesys, preen);
208 if (debug && preen)
209 pwarn("starting\n");
210 switch (setup(filesys)) {
211 case 0:
212 if (preen)
213 pfatal("CAN'T CHECK FILE SYSTEM.");
214 case -1:
215 return FSCK_EXIT_OK;
216 }
217 /*
218 * 1: scan inodes tallying blocks used
219 */
220 if (preen == 0) {
221 if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
222 printf("** Last Mounted on %s\n",
223 sblock.e2fs.e2fs_fsmnt);
224 }
225 if (hotroot())
226 printf("** Root file system\n");
227 printf("** Phase 1 - Check Blocks and Sizes\n");
228 }
229 pass1();
230
231 /*
232 * 1b: locate first references to duplicates, if any
233 */
234 if (duplist) {
235 if (preen)
236 pfatal("INTERNAL ERROR: dups with -p");
237 printf("** Phase 1b - Rescan For More DUPS\n");
238 pass1b();
239 }
240
241 /*
242 * 2: traverse directories from root to mark all connected directories
243 */
244 if (preen == 0)
245 printf("** Phase 2 - Check Pathnames\n");
246 pass2();
247
248 /*
249 * 3: scan inodes looking for disconnected directories
250 */
251 if (preen == 0)
252 printf("** Phase 3 - Check Connectivity\n");
253 pass3();
254
255 /*
256 * 4: scan inodes looking for disconnected files; check reference counts
257 */
258 if (preen == 0)
259 printf("** Phase 4 - Check Reference Counts\n");
260 pass4();
261
262 /*
263 * 5: check and repair resource counts in cylinder groups
264 */
265 if (preen == 0)
266 printf("** Phase 5 - Check Cyl groups\n");
267 pass5();
268
269 /*
270 * print out summary statistics
271 */
272 n_bfree = sblock.e2fs.e2fs_fbcount;
273
274 pwarn("%lld files, %lld used, %lld free\n",
275 (long long)n_files, (long long)n_blks, (long long)n_bfree);
276 if (debug &&
277 /* 9 reserved and unused inodes in FS */
278 (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
279 printf("%lld files missing\n", (long long)n_files);
280 if (debug) {
281 for (i = 0; i < sblock.e2fs_ncg; i++)
282 n_blks += cgoverhead(i);
283 n_blks += sblock.e2fs.e2fs_first_dblock;
284 if (n_blks -= maxfsblock - n_bfree)
285 printf("%lld blocks missing\n", (long long)n_blks);
286 if (duplist != NULL) {
287 printf("The following duplicate blocks remain:");
288 for (dp = duplist; dp; dp = dp->next)
289 printf(" %lld,", (long long)dp->dup);
290 printf("\n");
291 }
292 if (zlnhead != NULL) {
293 printf("The following zero link count inodes remain:");
294 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
295 printf(" %llu,",
296 (unsigned long long)zlnp->zlncnt);
297 printf("\n");
298 }
299 }
300 zlnhead = (struct zlncnt *)0;
301 duplist = (struct dups *)0;
302 muldup = (struct dups *)0;
303 inocleanup();
304 if (fsmodified) {
305 time_t t;
306 (void)time(&t);
307 sblock.e2fs.e2fs_wtime = t;
308 sblock.e2fs.e2fs_lastfsck = t;
309 sbdirty();
310 }
311 ckfini(1);
312 free(blockmap);
313 free(statemap);
314 free((char *)lncntp);
315 if (!fsmodified)
316 return FSCK_EXIT_OK;
317 if (!preen)
318 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
319 if (rerun)
320 printf("\n***** PLEASE RERUN FSCK *****\n");
321 #if !defined(__minix)
322 if (hotroot()) {
323 struct statvfs stfs_buf;
324 /*
325 * We modified the root. Do a mount update on
326 * it, unless it is read-write, so we can continue.
327 */
328 if (statvfs("/", &stfs_buf) == 0) {
329 long flags = stfs_buf.f_flag;
330 struct ufs_args args;
331
332 if (flags & MNT_RDONLY) {
333 args.fspec = 0;
334 flags |= MNT_UPDATE | MNT_RELOAD;
335 if (mount(MOUNT_EXT2FS, "/", flags,
336 &args, sizeof args) == 0)
337 return FSCK_EXIT_OK;
338 }
339 }
340 if (!preen)
341 printf("\n***** REBOOT NOW *****\n");
342 sync();
343 return FSCK_EXIT_ROOT_CHANGED;
344 }
345 #endif /* !defined(__minix) */
346 return FSCK_EXIT_OK;
347 }
348
349 static void
usage(void)350 usage(void)
351 {
352
353 (void) fprintf(stderr,
354 "usage: %s [-dfnpUy] [-b block] [-c level] [-m mode] filesystem ...\n",
355 getprogname());
356 exit(FSCK_EXIT_USAGE);
357 }
358
359