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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #if 0
31 #ifndef lint
32 static const char sccsid[] = "@(#)pass4.c 8.4 (Berkeley) 4/28/95";
33 #endif /* not lint */
34 #endif
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #include <sys/param.h>
39
40 #include <ufs/ufs/dinode.h>
41 #include <ufs/ffs/fs.h>
42
43 #include <err.h>
44 #include <stdint.h>
45 #include <string.h>
46
47 #include "fsck.h"
48
49 void
pass4(void)50 pass4(void)
51 {
52 ino_t inumber;
53 union dinode *dp;
54 struct inodesc idesc;
55 int i, n, cg;
56
57 memset(&idesc, 0, sizeof(struct inodesc));
58 idesc.id_type = ADDR;
59 idesc.id_func = pass4check;
60 for (cg = 0; cg < sblock.fs_ncg; cg++) {
61 if (got_siginfo) {
62 printf("%s: phase 4: cyl group %d of %d (%d%%)\n",
63 cdevname, cg, sblock.fs_ncg,
64 cg * 100 / sblock.fs_ncg);
65 got_siginfo = 0;
66 }
67 if (got_sigalarm) {
68 setproctitle("%s p4 %d%%", cdevname,
69 cg * 100 / sblock.fs_ncg);
70 got_sigalarm = 0;
71 }
72 inumber = cg * sblock.fs_ipg;
73 for (i = 0; i < inostathead[cg].il_numalloced; i++, inumber++) {
74 if (inumber < ROOTINO)
75 continue;
76 idesc.id_number = inumber;
77 switch (inoinfo(inumber)->ino_state) {
78
79 case FZLINK:
80 case DZLINK:
81 if (inoinfo(inumber)->ino_linkcnt == 0) {
82 clri(&idesc, "UNREF", 1);
83 break;
84 }
85 /* fall through */
86
87 case FSTATE:
88 case DFOUND:
89 n = inoinfo(inumber)->ino_linkcnt;
90 if (n) {
91 adjust(&idesc, (short)n);
92 break;
93 }
94 break;
95
96 case DSTATE:
97 clri(&idesc, "UNREF", 1);
98 break;
99
100 case DCLEAR:
101 /* if on snapshot, already cleared */
102 if (cursnapshot != 0)
103 break;
104 dp = ginode(inumber);
105 if (DIP(dp, di_size) == 0) {
106 clri(&idesc, "ZERO LENGTH", 1);
107 break;
108 }
109 /* fall through */
110 case FCLEAR:
111 clri(&idesc, "BAD/DUP", 1);
112 break;
113
114 case USTATE:
115 break;
116
117 default:
118 errx(EEXIT, "BAD STATE %d FOR INODE I=%ju",
119 inoinfo(inumber)->ino_state,
120 (uintmax_t)inumber);
121 }
122 }
123 }
124 }
125
126 int
pass4check(struct inodesc * idesc)127 pass4check(struct inodesc *idesc)
128 {
129 struct dups *dlp;
130 int nfrags, res = KEEPON;
131 ufs2_daddr_t blkno = idesc->id_blkno;
132
133 for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
134 if (chkrange(blkno, 1)) {
135 res = SKIP;
136 } else if (testbmap(blkno)) {
137 for (dlp = duplist; dlp; dlp = dlp->next) {
138 if (dlp->dup != blkno)
139 continue;
140 dlp->dup = duplist->dup;
141 dlp = duplist;
142 duplist = duplist->next;
143 free((char *)dlp);
144 break;
145 }
146 if (dlp == 0) {
147 clrbmap(blkno);
148 n_blks--;
149 }
150 }
151 }
152 return (res);
153 }
154