1 /*
2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #ifndef lint
9 static char copyright[] =
10 "@(#) Copyright (c) 1980, 1986, 1993\n\
11 The Regents of the University of California. All rights reserved.\n";
12 #endif /* not lint */
13
14 #ifndef lint
15 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 05/14/95";
16 #endif /* not lint */
17
18 #include <sys/param.h>
19 #include <sys/time.h>
20 #include <sys/mount.h>
21
22 #include <ufs/ufs/dinode.h>
23 #include <ufs/ufs/ufsmount.h>
24 #include <ufs/ffs/fs.h>
25
26 #include <ctype.h>
27 #include <err.h>
28 #include <fstab.h>
29 #include <string.h>
30
31 #include "fsck.h"
32
33 int returntosingle;
34
35 static int argtoi __P((int flag, char *req, char *str, int base));
36 static int docheck __P((struct fstab *fsp));
37 static int checkfilesys __P((char *filesys, char *mntpt, long auxdata,
38 int child));
39 void main __P((int argc, char *argv[]));
40
41 void
main(argc,argv)42 main(argc, argv)
43 int argc;
44 char *argv[];
45 {
46 int ch;
47 int ret, maxrun = 0;
48 extern char *optarg;
49 extern int optind;
50
51 sync();
52 while ((ch = getopt(argc, argv, "dpnNyYb:c:l:m:")) != EOF) {
53 switch (ch) {
54 case 'p':
55 preen++;
56 break;
57
58 case 'b':
59 bflag = argtoi('b', "number", optarg, 10);
60 printf("Alternate super block location: %d\n", bflag);
61 break;
62
63 case 'c':
64 cvtlevel = argtoi('c', "conversion level", optarg, 10);
65 break;
66
67 case 'd':
68 debug++;
69 break;
70
71 case 'l':
72 maxrun = argtoi('l', "number", optarg, 10);
73 break;
74
75 case 'm':
76 lfmode = argtoi('m', "mode", optarg, 8);
77 if (lfmode &~ 07777)
78 errx(EEXIT, "bad mode to -m: %o", lfmode);
79 printf("** lost+found creation mode %o\n", lfmode);
80 break;
81
82 case 'n':
83 case 'N':
84 nflag++;
85 yflag = 0;
86 break;
87
88 case 'y':
89 case 'Y':
90 yflag++;
91 nflag = 0;
92 break;
93
94 default:
95 errx(EEXIT, "%c option?", ch);
96 }
97 }
98 argc -= optind;
99 argv += optind;
100 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
101 (void)signal(SIGINT, catch);
102 if (preen)
103 (void)signal(SIGQUIT, catchquit);
104 if (argc) {
105 while (argc-- > 0)
106 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
107 exit(0);
108 }
109 ret = checkfstab(preen, maxrun, docheck, checkfilesys);
110 if (returntosingle)
111 exit(2);
112 exit(ret);
113 }
114
115 static int
argtoi(flag,req,str,base)116 argtoi(flag, req, str, base)
117 int flag;
118 char *req, *str;
119 int base;
120 {
121 char *cp;
122 int ret;
123
124 ret = (int)strtol(str, &cp, base);
125 if (cp == str || *cp)
126 errx(EEXIT, "-%c flag requires a %s", flag, req);
127 return (ret);
128 }
129
130 /*
131 * Determine whether a filesystem should be checked.
132 */
133 static int
docheck(fsp)134 docheck(fsp)
135 register struct fstab *fsp;
136 {
137
138 if (strcmp(fsp->fs_vfstype, "ufs") ||
139 (strcmp(fsp->fs_type, FSTAB_RW) &&
140 strcmp(fsp->fs_type, FSTAB_RO)) ||
141 fsp->fs_passno == 0)
142 return (0);
143 return (1);
144 }
145
146 /*
147 * Check the specified filesystem.
148 */
149 /* ARGSUSED */
150 static int
checkfilesys(filesys,mntpt,auxdata,child)151 checkfilesys(filesys, mntpt, auxdata, child)
152 char *filesys, *mntpt;
153 long auxdata;
154 int child;
155 {
156 ufs_daddr_t n_ffree, n_bfree;
157 struct dups *dp;
158 struct zlncnt *zlnp;
159 int cylno, flags;
160
161 if (preen && child)
162 (void)signal(SIGQUIT, voidquit);
163 cdevname = filesys;
164 if (debug && preen)
165 pwarn("starting\n");
166 switch (setup(filesys)) {
167 case 0:
168 if (preen)
169 pfatal("CAN'T CHECK FILE SYSTEM.");
170 /* fall through */
171 case -1:
172 return (0);
173 }
174 /*
175 * 1: scan inodes tallying blocks used
176 */
177 if (preen == 0) {
178 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
179 if (hotroot)
180 printf("** Root file system\n");
181 printf("** Phase 1 - Check Blocks and Sizes\n");
182 }
183 pass1();
184
185 /*
186 * 1b: locate first references to duplicates, if any
187 */
188 if (duplist) {
189 if (preen)
190 pfatal("INTERNAL ERROR: dups with -p");
191 printf("** Phase 1b - Rescan For More DUPS\n");
192 pass1b();
193 }
194
195 /*
196 * 2: traverse directories from root to mark all connected directories
197 */
198 if (preen == 0)
199 printf("** Phase 2 - Check Pathnames\n");
200 pass2();
201
202 /*
203 * 3: scan inodes looking for disconnected directories
204 */
205 if (preen == 0)
206 printf("** Phase 3 - Check Connectivity\n");
207 pass3();
208
209 /*
210 * 4: scan inodes looking for disconnected files; check reference counts
211 */
212 if (preen == 0)
213 printf("** Phase 4 - Check Reference Counts\n");
214 pass4();
215
216 /*
217 * 5: check and repair resource counts in cylinder groups
218 */
219 if (preen == 0)
220 printf("** Phase 5 - Check Cyl groups\n");
221 pass5();
222
223 /*
224 * print out summary statistics
225 */
226 n_ffree = sblock.fs_cstotal.cs_nffree;
227 n_bfree = sblock.fs_cstotal.cs_nbfree;
228 pwarn("%ld files, %ld used, %ld free ",
229 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
230 printf("(%ld frags, %ld blocks, %d.%d%% fragmentation)\n",
231 n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize,
232 ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10);
233 if (debug &&
234 (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
235 printf("%ld files missing\n", n_files);
236 if (debug) {
237 n_blks += sblock.fs_ncg *
238 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
239 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
240 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
241 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree))
242 printf("%ld blocks missing\n", n_blks);
243 if (duplist != NULL) {
244 printf("The following duplicate blocks remain:");
245 for (dp = duplist; dp; dp = dp->next)
246 printf(" %ld,", dp->dup);
247 printf("\n");
248 }
249 if (zlnhead != NULL) {
250 printf("The following zero link count inodes remain:");
251 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
252 printf(" %lu,", zlnp->zlncnt);
253 printf("\n");
254 }
255 }
256 zlnhead = (struct zlncnt *)0;
257 duplist = (struct dups *)0;
258 muldup = (struct dups *)0;
259 inocleanup();
260 if (fsmodified) {
261 (void)time(&sblock.fs_time);
262 sbdirty();
263 }
264 if (cvtlevel && sblk.b_dirty) {
265 /*
266 * Write out the duplicate super blocks
267 */
268 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
269 bwrite(fswritefd, (char *)&sblock,
270 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
271 }
272 if (!hotroot) {
273 ckfini(1);
274 } else {
275 struct statfs stfs_buf;
276 /*
277 * Check to see if root is mounted read-write.
278 */
279 if (statfs("/", &stfs_buf) == 0)
280 flags = stfs_buf.f_flags;
281 else
282 flags = 0;
283 ckfini(flags & MNT_RDONLY);
284 }
285 free(blockmap);
286 free(statemap);
287 free((char *)lncntp);
288 if (!fsmodified)
289 return (0);
290 if (!preen)
291 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
292 if (hotroot) {
293 struct ufs_args args;
294 int ret;
295 /*
296 * We modified the root. Do a mount update on
297 * it, unless it is read-write, so we can continue.
298 */
299 if (flags & MNT_RDONLY) {
300 args.fspec = 0;
301 args.export.ex_flags = 0;
302 args.export.ex_root = 0;
303 flags |= MNT_UPDATE | MNT_RELOAD;
304 ret = mount("ufs", "/", flags, &args);
305 if (ret == 0)
306 return (0);
307 }
308 if (!preen)
309 printf("\n***** REBOOT NOW *****\n");
310 sync();
311 return (4);
312 }
313 return (0);
314 }
315