Bug Summary

File:src/sbin/fsck_ffs/inode.c
Warning:line 215, column 6
Value stored to 'isize' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name inode.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sbin/fsck_ffs/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/sbin/fsck_ffs/../fsck -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/sbin/fsck_ffs/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c /usr/src/sbin/fsck_ffs/inode.c
1/* $OpenBSD: inode.c,v 1.50 2020/07/13 06:52:53 otto Exp $ */
2/* $NetBSD: inode.c,v 1.23 1996/10/11 20:15:47 thorpej Exp $ */
3
4/*
5 * Copyright (c) 1980, 1986, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/param.h> /* setbit btodb */
34#include <sys/time.h>
35#include <ufs/ufs/dinode.h>
36#include <ufs/ufs/dir.h>
37#include <ufs/ffs/fs.h>
38#ifndef SMALL
39#include <pwd.h>
40#endif
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44#include <unistd.h>
45#include <limits.h>
46
47#include "fsck.h"
48#include "fsutil.h"
49#include "extern.h"
50
51#define MINIMUM(a, b)(((a) < (b)) ? (a) : (b)) (((a) < (b)) ? (a) : (b))
52#define MAXIMUM(a, b)(((a) > (b)) ? (a) : (b)) (((a) > (b)) ? (a) : (b))
53
54static ino_t startinum;
55
56static int iblock(struct inodesc *, long, off_t);
57
58int
59ckinode(union dinode *dp, struct inodesc *idesc)
60{
61 long ret, ndb, offset;
62 union dinode dino;
63 off_t sizepb, remsize;
64 mode_t mode;
65 int i;
66 char pathbuf[PATH_MAX1024 + 1];
67
68 if (idesc->id_fix != IGNORE)
69 idesc->id_fix = DONTKNOW;
70 idesc->id_entryno = 0;
71 idesc->id_filesize = DIP(dp, di_size)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_size
: (dp)->dp2.di_size);
72 mode = DIP(dp, di_mode)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_mode
: (dp)->dp2.di_mode) & IFMT0170000;
73 if (mode == IFBLK0060000 || mode == IFCHR0020000 || (mode == IFLNK0120000 &&
74 (DIP(dp, di_size)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_size
: (dp)->dp2.di_size) < sblock(*sblk.b_un.b_fs).fs_maxsymlinklen ||
75 (sblock(*sblk.b_un.b_fs).fs_maxsymlinklen == 0 && DIP(dp, di_blocks)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_blocks
: (dp)->dp2.di_blocks) == 0))))
76 return (KEEPON0x04);
77 if (sblock(*sblk.b_un.b_fs).fs_magic == FS_UFS1_MAGIC0x011954)
78 dino.dp1 = dp->dp1;
79 else
80 dino.dp2 = dp->dp2;
81 ndb = howmany(DIP(&dino, di_size), sblock.fs_bsize)((((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->
dp1.di_size : (&dino)->dp2.di_size)) + (((*sblk.b_un.b_fs
).fs_bsize) - 1)) / ((*sblk.b_un.b_fs).fs_bsize));
82 for (i = 0; i < NDADDR12; i++) {
83 if (--ndb == 0 && (offset = blkoff(&sblock,(((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->
dp1.di_size : (&dino)->dp2.di_size)) & (&(*sblk
.b_un.b_fs))->fs_qbmask)
84 DIP(&dino, di_size))(((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->
dp1.di_size : (&dino)->dp2.di_size)) & (&(*sblk
.b_un.b_fs))->fs_qbmask)) != 0)
85 idesc->id_numfrags =
86 numfrags(&sblock, fragroundup(&sblock, offset))(((((offset) + (&(*sblk.b_un.b_fs))->fs_qfmask) & (
&(*sblk.b_un.b_fs))->fs_fmask)) >> (&(*sblk.
b_un.b_fs))->fs_fshift);
87 else
88 idesc->id_numfrags = sblock(*sblk.b_un.b_fs).fs_frag;
89 if (DIP(&dino, di_db[i])(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->dp1
.di_db[i] : (&dino)->dp2.di_db[i]) == 0) {
90 if (idesc->id_type == DATA1 && ndb >= 0) {
91 /* An empty block in a directory XXX */
92 getpathname(pathbuf, sizeof pathbuf,
93 idesc->id_number, idesc->id_number);
94 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
95 pathbuf);
96 if (reply("ADJUST LENGTH") == 1) {
97 dp = ginode(idesc->id_number);
98 DIP_SET(dp, di_size,do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_size = (i * (*sblk.b_un.b_fs).fs_bsize); else (dp)->dp2
.di_size = (i * (*sblk.b_un.b_fs).fs_bsize); } while (0)
99 i * sblock.fs_bsize)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_size = (i * (*sblk.b_un.b_fs).fs_bsize); else (dp)->dp2
.di_size = (i * (*sblk.b_un.b_fs).fs_bsize); } while (0);
100 printf(
101 "YOU MUST RERUN FSCK AFTERWARDS\n");
102 rerun = 1;
103 inodirty();
104 }
105 }
106 continue;
107 }
108 idesc->id_blkno = DIP(&dino, di_db[i])(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->dp1
.di_db[i] : (&dino)->dp2.di_db[i]);
109 if (idesc->id_type == ADDR2)
110 ret = (*idesc->id_func)(idesc);
111 else
112 ret = dirscan(idesc);
113 if (ret & STOP0x01)
114 return (ret);
115 }
116 idesc->id_numfrags = sblock(*sblk.b_un.b_fs).fs_frag;
117 remsize = DIP(&dino, di_size)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->dp1
.di_size : (&dino)->dp2.di_size) - sblock(*sblk.b_un.b_fs).fs_bsize * NDADDR12;
118 sizepb = sblock(*sblk.b_un.b_fs).fs_bsize;
119 for (i = 0; i < NIADDR3; i++) {
120 if (DIP(&dino, di_ib[i])(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->dp1
.di_ib[i] : (&dino)->dp2.di_ib[i])) {
121 idesc->id_blkno = DIP(&dino, di_ib[i])(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (&dino)->dp1
.di_ib[i] : (&dino)->dp2.di_ib[i]);
122 ret = iblock(idesc, i + 1, remsize);
123 if (ret & STOP0x01)
124 return (ret);
125 } else {
126 if (idesc->id_type == DATA1 && remsize > 0) {
127 /* An empty block in a directory XXX */
128 getpathname(pathbuf, sizeof pathbuf,
129 idesc->id_number, idesc->id_number);
130 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
131 pathbuf);
132 if (reply("ADJUST LENGTH") == 1) {
133 dp = ginode(idesc->id_number);
134 DIP_SET(dp, di_size,do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->
dp1.di_size : (dp)->dp2.di_size) - remsize); else (dp)->
dp2.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp
)->dp1.di_size : (dp)->dp2.di_size) - remsize); } while
(0)
135 DIP(dp, di_size) - remsize)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->
dp1.di_size : (dp)->dp2.di_size) - remsize); else (dp)->
dp2.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp
)->dp1.di_size : (dp)->dp2.di_size) - remsize); } while
(0);
136 remsize = 0;
137 printf(
138 "YOU MUST RERUN FSCK AFTERWARDS\n");
139 rerun = 1;
140 inodirty();
141 break;
142 }
143 }
144 }
145 sizepb *= NINDIR(&sblock)((&(*sblk.b_un.b_fs))->fs_nindir);
146 remsize -= sizepb;
147 }
148 return (KEEPON0x04);
149}
150
151static int
152iblock(struct inodesc *idesc, long ilevel, off_t isize)
153{
154 struct bufarea *bp;
155 int i, n, (*func)(struct inodesc *), nif;
156 off_t sizepb;
157 char buf[BUFSIZ1024];
158 char pathbuf[PATH_MAX1024 + 1];
159 union dinode *dp;
160
161 if (idesc->id_type == ADDR2) {
162 func = idesc->id_func;
163 if (((n = (*func)(idesc)) & KEEPON0x04) == 0)
164 return (n);
165 } else
166 func = dirscan;
167 if (isize < 0 || chkrange(idesc->id_blkno, idesc->id_numfrags))
168 return (SKIP0x02);
169 bp = getdatablk(idesc->id_blkno, sblock(*sblk.b_un.b_fs).fs_bsize);
170 ilevel--;
171 for (sizepb = sblock(*sblk.b_un.b_fs).fs_bsize, i = 0; i < ilevel; i++)
172 sizepb *= NINDIR(&sblock)((&(*sblk.b_un.b_fs))->fs_nindir);
173 if (howmany(isize, sizepb)(((isize) + ((sizepb) - 1)) / (sizepb)) > NINDIR(&sblock)((&(*sblk.b_un.b_fs))->fs_nindir))
174 nif = NINDIR(&sblock)((&(*sblk.b_un.b_fs))->fs_nindir);
175 else
176 nif = howmany(isize, sizepb)(((isize) + ((sizepb) - 1)) / (sizepb));
177 if (idesc->id_func == pass1check && nif < NINDIR(&sblock)((&(*sblk.b_un.b_fs))->fs_nindir)) {
178 for (i = nif; i < NINDIR(&sblock)((&(*sblk.b_un.b_fs))->fs_nindir); i++) {
179 if (IBLK(bp, i)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (bp)->b_un.b_indir1
[i] : (bp)->b_un.b_indir2[i]) == 0)
180 continue;
181 (void)snprintf(buf, sizeof buf,
182 "PARTIALLY TRUNCATED INODE I=%llu",
183 (unsigned long long)idesc->id_number);
184 if (preen)
185 pfatal("%s", buf);
186 else if (dofix(idesc, buf)) {
187 IBLK_SET(bp, i, 0)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (bp)->b_un
.b_indir1[i] = (0); else (bp)->b_un.b_indir2[i] = (0); } while
(0);
188 dirty(bp)(bp)->b_dirty = 1;
189 }
190 }
191 flush(fswritefd, bp);
192 }
193 for (i = 0; i < nif; i++) {
194 if (IBLK(bp, i)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (bp)->b_un.b_indir1
[i] : (bp)->b_un.b_indir2[i])) {
195 idesc->id_blkno = IBLK(bp, i)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (bp)->b_un.b_indir1
[i] : (bp)->b_un.b_indir2[i]);
196 if (ilevel == 0)
197 n = (*func)(idesc);
198 else
199 n = iblock(idesc, ilevel, isize);
200 if (n & STOP0x01) {
201 bp->b_flags &= ~B_INUSE1;
202 return (n);
203 }
204 } else {
205 if (idesc->id_type == DATA1 && isize > 0) {
206 /* An empty block in a directory XXX */
207 getpathname(pathbuf, sizeof pathbuf,
208 idesc->id_number, idesc->id_number);
209 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
210 pathbuf);
211 if (reply("ADJUST LENGTH") == 1) {
212 dp = ginode(idesc->id_number);
213 DIP_SET(dp, di_size,do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->
dp1.di_size : (dp)->dp2.di_size) - isize); else (dp)->dp2
.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->
dp1.di_size : (dp)->dp2.di_size) - isize); } while (0)
214 DIP(dp, di_size) - isize)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->
dp1.di_size : (dp)->dp2.di_size) - isize); else (dp)->dp2
.di_size = ((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->
dp1.di_size : (dp)->dp2.di_size) - isize); } while (0);
215 isize = 0;
Value stored to 'isize' is never read
216 printf(
217 "YOU MUST RERUN FSCK AFTERWARDS\n");
218 rerun = 1;
219 inodirty();
220 bp->b_flags &= ~B_INUSE1;
221 return(STOP0x01);
222 }
223 }
224 }
225 isize -= sizepb;
226 }
227 bp->b_flags &= ~B_INUSE1;
228 return (KEEPON0x04);
229}
230
231/*
232 * Check that a block in a legal block number.
233 * Return 0 if in range, 1 if out of range.
234 */
235int
236chkrange(daddr_t blk, int cnt)
237{
238 int c;
239
240 if (cnt <= 0 || blk <= 0 || blk > maxfsblock ||
241 cnt - 1 > maxfsblock - blk)
242 return (1);
243 if (cnt > sblock(*sblk.b_un.b_fs).fs_frag ||
244 fragnum(&sblock, blk)((blk) & ((&(*sblk.b_un.b_fs))->fs_frag - 1)) + cnt > sblock(*sblk.b_un.b_fs).fs_frag) {
245 if (debug)
246 printf("bad size: blk %lld, offset %lld, size %d\n",
247 (long long)blk, (long long)fragnum(&sblock, blk)((blk) & ((&(*sblk.b_un.b_fs))->fs_frag - 1)),
248 cnt);
249 return (1);
250 }
251 c = dtog(&sblock, blk)((blk) / (&(*sblk.b_un.b_fs))->fs_fpg);
252 if (blk < cgdmin(&sblock, c)((((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg * (c)) + (&
(*sblk.b_un.b_fs))->fs_cgoffset * ((c) & ~((&(*sblk
.b_un.b_fs))->fs_cgmask))) + (&(*sblk.b_un.b_fs))->
fs_dblkno)) {
253 if ((blk + cnt) > cgsblock(&sblock, c)((((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg * (c)) + (&
(*sblk.b_un.b_fs))->fs_cgoffset * ((c) & ~((&(*sblk
.b_un.b_fs))->fs_cgmask))) + (&(*sblk.b_un.b_fs))->
fs_sblkno)) {
254 if (debug) {
255 printf("blk %lld < cgdmin %lld;",
256 (long long)blk,
257 (long long)cgdmin(&sblock, c)((((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg * (c)) + (&
(*sblk.b_un.b_fs))->fs_cgoffset * ((c) & ~((&(*sblk
.b_un.b_fs))->fs_cgmask))) + (&(*sblk.b_un.b_fs))->
fs_dblkno));
258 printf(" blk + cnt %lld > cgsbase %lld\n",
259 (long long)(blk + cnt),
260 (long long)cgsblock(&sblock, c)((((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg * (c)) + (&
(*sblk.b_un.b_fs))->fs_cgoffset * ((c) & ~((&(*sblk
.b_un.b_fs))->fs_cgmask))) + (&(*sblk.b_un.b_fs))->
fs_sblkno));
261 }
262 return (1);
263 }
264 } else {
265 if ((blk + cnt) > cgbase(&sblock, c+1)((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg * (c+1))) {
266 if (debug) {
267 printf("blk %lld >= cgdmin %lld;",
268 (long long)blk,
269 (long long)cgdmin(&sblock, c)((((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg * (c)) + (&
(*sblk.b_un.b_fs))->fs_cgoffset * ((c) & ~((&(*sblk
.b_un.b_fs))->fs_cgmask))) + (&(*sblk.b_un.b_fs))->
fs_dblkno));
270 printf(" blk + cnt %lld > sblock.fs_fpg %d\n",
271 (long long)(blk+cnt), sblock(*sblk.b_un.b_fs).fs_fpg);
272 }
273 return (1);
274 }
275 }
276 return (0);
277}
278
279/*
280 * General purpose interface for reading inodes.
281 */
282union dinode *
283ginode(ino_t inumber)
284{
285 daddr_t iblk;
286
287 if (inumber < ROOTINO((ufsino_t)2) || inumber > maxino)
288 errexit("bad inode number %llu to ginode\n",
289 (unsigned long long)inumber);
290 if (startinum == 0 ||
291 inumber < startinum || inumber >= startinum + INOPB(&sblock)((&(*sblk.b_un.b_fs))->fs_inopb)) {
292 iblk = ino_to_fsba(&sblock, inumber)((daddr_t)(((((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg * (
((inumber) / (&(*sblk.b_un.b_fs))->fs_ipg))) + (&(
*sblk.b_un.b_fs))->fs_cgoffset * ((((inumber) / (&(*sblk
.b_un.b_fs))->fs_ipg)) & ~((&(*sblk.b_un.b_fs))->
fs_cgmask))) + (&(*sblk.b_un.b_fs))->fs_iblkno) + ((((
((inumber) % (&(*sblk.b_un.b_fs))->fs_ipg) / ((&(*
sblk.b_un.b_fs))->fs_inopb))) << ((&(*sblk.b_un.
b_fs)))->fs_fragshift))));
293 if (pbp != 0)
294 pbp->b_flags &= ~B_INUSE1;
295 pbp = getdatablk(iblk, sblock(*sblk.b_un.b_fs).fs_bsize);
296 startinum = (inumber / INOPB(&sblock)((&(*sblk.b_un.b_fs))->fs_inopb)) * INOPB(&sblock)((&(*sblk.b_un.b_fs))->fs_inopb);
297 }
298 if (sblock(*sblk.b_un.b_fs).fs_magic == FS_UFS1_MAGIC0x011954)
299 return ((union dinode *)
300 &pbp->b_un.b_dinode1[inumber % INOPB(&sblock)((&(*sblk.b_un.b_fs))->fs_inopb)]);
301 return ((union dinode *)&pbp->b_un.b_dinode2[inumber % INOPB(&sblock)((&(*sblk.b_un.b_fs))->fs_inopb)]);
302}
303
304/*
305 * Special purpose version of ginode used to optimize first pass
306 * over all the inodes in numerical order.
307 */
308ino_t nextino, lastinum;
309long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
310static caddr_t inodebuf;
311
312union dinode *
313getnextinode(ino_t inumber)
314{
315 long size;
316 daddr_t dblk;
317 union dinode *dp;
318 static caddr_t nextinop;
319
320 if (inumber != nextino++ || inumber > maxino)
321 errexit("bad inode number %llu to nextinode %llu\n",
322 (unsigned long long)inumber,
323 (unsigned long long)nextino);
324 if (inumber >= lastinum) {
325 readcnt++;
326 dblk = fsbtodb(&sblock, ino_to_fsba(&sblock, lastinum))((((daddr_t)(((((daddr_t)(&(*sblk.b_un.b_fs))->fs_fpg *
(((lastinum) / (&(*sblk.b_un.b_fs))->fs_ipg))) + (&
(*sblk.b_un.b_fs))->fs_cgoffset * ((((lastinum) / (&(*
sblk.b_un.b_fs))->fs_ipg)) & ~((&(*sblk.b_un.b_fs)
)->fs_cgmask))) + (&(*sblk.b_un.b_fs))->fs_iblkno) +
((((((lastinum) % (&(*sblk.b_un.b_fs))->fs_ipg) / ((&
(*sblk.b_un.b_fs))->fs_inopb))) << ((&(*sblk.b_un
.b_fs)))->fs_fragshift))))) << (&(*sblk.b_un.b_fs
))->fs_fsbtodb);
327 if (readcnt % readpercg == 0) {
328 size = partialsize;
329 lastinum += partialcnt;
330 } else {
331 size = inobufsize;
332 lastinum += fullcnt;
333 }
334 (void)bread(fsreadfd, inodebuf, dblk, size);
335 nextinop = inodebuf;
336 }
337 dp = (union dinode *)nextinop;
338 if (sblock(*sblk.b_un.b_fs).fs_magic == FS_UFS1_MAGIC0x011954)
339 nextinop += sizeof(struct ufs1_dinode);
340 else
341 nextinop += sizeof(struct ufs2_dinode);
342 return (dp);
343}
344
345void
346setinodebuf(ino_t inum)
347{
348
349 startinum = 0;
350 nextino = inum;
351 lastinum = inum;
352 readcnt = 0;
353 if (inodebuf != NULL((void *)0))
354 return;
355 inobufsize = blkroundup(&sblock, INOBUFSIZE)(((56*1024) + (&(*sblk.b_un.b_fs))->fs_qbmask) & (
&(*sblk.b_un.b_fs))->fs_bmask);
356 if (sblock(*sblk.b_un.b_fs).fs_magic == FS_UFS1_MAGIC0x011954)
357 fullcnt = inobufsize / sizeof(struct ufs1_dinode);
358 else
359 fullcnt = inobufsize / sizeof(struct ufs2_dinode);
360 readpercg = sblock(*sblk.b_un.b_fs).fs_ipg / fullcnt;
361 partialcnt = sblock(*sblk.b_un.b_fs).fs_ipg % fullcnt;
362 if (sblock(*sblk.b_un.b_fs).fs_magic == FS_UFS1_MAGIC0x011954)
363 partialsize = partialcnt * sizeof(struct ufs1_dinode);
364 else
365 partialsize = partialcnt * sizeof(struct ufs2_dinode);
366 if (partialcnt != 0) {
367 readpercg++;
368 } else {
369 partialcnt = fullcnt;
370 partialsize = inobufsize;
371 }
372 if (inodebuf == NULL((void *)0) &&
373 (inodebuf = Malloc((unsigned)inobufsize)) == NULL((void *)0))
374 errexit("Cannot allocate space for inode buffer\n");
375}
376
377void
378freeinodebuf(void)
379{
380
381 free(inodebuf);
382 inodebuf = NULL((void *)0);
383}
384
385/*
386 * Routines to maintain information about directory inodes.
387 * This is built during the first pass and used during the
388 * second and third passes.
389 *
390 * Enter inodes into the cache.
391 */
392void
393cacheino(union dinode *dp, ino_t inumber)
394{
395 struct inoinfo *inp;
396 struct inoinfo **inpp, **newinpsort;
397 unsigned int blks;
398 long newlistmax;
399 int i;
400
401 blks = howmany(DIP(dp, di_size), sblock.fs_bsize)((((((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_size
: (dp)->dp2.di_size)) + (((*sblk.b_un.b_fs).fs_bsize) - 1
)) / ((*sblk.b_un.b_fs).fs_bsize));
402 if (blks > NDADDR12)
403 blks = NDADDR12 + NIADDR3;
404 inp = Malloc(sizeof(*inp) + (blks ? blks - 1 : 0) * sizeof(daddr_t));
405 if (inp == NULL((void *)0))
406 errexit("cannot allocate memory for inode cache\n");
407 inpp = &inphead[inumber % numdirs];
408 inp->i_nexthash = *inpp;
409 *inpp = inp;
410 inp->i_child = inp->i_sibling = 0;
411 if (inumber == ROOTINO((ufsino_t)2))
412 inp->i_parent = ROOTINO((ufsino_t)2);
413 else
414 inp->i_parent = 0;
415 inp->i_dotdot = 0;
416 inp->i_number = inumber;
417 inp->i_isize = DIP(dp, di_size)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_size
: (dp)->dp2.di_size);
418 inp->i_numblks = blks;
419 for (i = 0; i < (blks < NDADDR12 ? blks : NDADDR12); i++)
420 inp->i_blks[i] = DIP(dp, di_db[i])(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_db
[i] : (dp)->dp2.di_db[i]);
421 if (blks > NDADDR12)
422 for (i = 0; i < NIADDR3; i++)
423 inp->i_blks[NDADDR12 + i] = DIP(dp, di_ib[i])(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_ib
[i] : (dp)->dp2.di_ib[i]);
424 if (inplast == listmax) {
425 newlistmax = listmax + 100;
426 newinpsort = Reallocarray(inpsort,
427 (unsigned)newlistmax, sizeof(struct inoinfo *));
428 if (newinpsort == NULL((void *)0))
429 errexit("cannot increase directory list\n");
430 inpsort = newinpsort;
431 listmax = newlistmax;
432 }
433 inpsort[inplast++] = inp;
434}
435
436/*
437 * Look up an inode cache structure.
438 */
439struct inoinfo *
440getinoinfo(ino_t inumber)
441{
442 struct inoinfo *inp;
443
444 for (inp = inphead[inumber % numdirs]; inp; inp = inp->i_nexthash) {
445 if (inp->i_number != inumber)
446 continue;
447 return (inp);
448 }
449 errexit("cannot find inode %llu\n", (unsigned long long)inumber);
450 return (NULL((void *)0));
451}
452
453/*
454 * Clean up all the inode cache structure.
455 */
456void
457inocleanup(void)
458{
459 struct inoinfo **inpp;
460
461 if (inphead == NULL((void *)0))
462 return;
463 for (inpp = &inpsort[inplast - 1]; inpp >= inpsort; inpp--)
464 free(*inpp);
465 free(inphead);
466 free(inpsort);
467 inphead = inpsort = NULL((void *)0);
468}
469
470void
471inodirty(void)
472{
473 dirty(pbp)(pbp)->b_dirty = 1;
474}
475
476void
477clri(struct inodesc *idesc, char *type, int flag)
478{
479 union dinode *dp;
480
481 dp = ginode(idesc->id_number);
482 if (flag == 1) {
483 pwarn("%s %s", type,
484 (DIP(dp, di_mode)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_mode
: (dp)->dp2.di_mode) & IFMT0170000) == IFDIR0040000 ? "DIR" : "FILE");
485 pinode(idesc->id_number);
486 }
487 if (preen || reply("CLEAR") == 1) {
488 if (preen)
489 printf(" (CLEARED)\n");
490 n_files--;
491 (void)ckinode(dp, idesc);
492 clearinode(dp)if ((*sblk.b_un.b_fs).fs_magic == 0x011954) { (dp)->dp1 = ufs1_zino
; } else { (dp)->dp2 = ufs2_zino; };
493 SET_ISTATE(idesc->id_number, USTATE)do { (inoinfo(idesc->id_number)->ino_state) = (01); } while
(0);
494 inodirty();
495 }
496}
497
498int
499findname(struct inodesc *idesc)
500{
501 struct direct *dirp = idesc->id_dirp;
502
503 if (dirp->d_ino != idesc->id_parent)
504 return (KEEPON0x04);
505 memcpy(idesc->id_name, dirp->d_name, (size_t)dirp->d_namlen + 1);
506 return (STOP0x01|FOUND0x10);
507}
508
509int
510findino(struct inodesc *idesc)
511{
512 struct direct *dirp = idesc->id_dirp;
513
514 if (dirp->d_ino == 0)
515 return (KEEPON0x04);
516 if (strcmp(dirp->d_name, idesc->id_name) == 0 &&
517 dirp->d_ino >= ROOTINO((ufsino_t)2) && dirp->d_ino <= maxino) {
518 idesc->id_parent = dirp->d_ino;
519 return (STOP0x01|FOUND0x10);
520 }
521 return (KEEPON0x04);
522}
523
524void
525pinode(ino_t ino)
526{
527 union dinode *dp;
528 const char *p;
529 time_t t;
530
531 printf(" I=%llu ", (unsigned long long)ino);
532 if (ino < ROOTINO((ufsino_t)2) || ino > maxino)
533 return;
534 dp = ginode(ino);
535 printf(" OWNER=");
536#ifndef SMALL
537 if ((p = user_from_uid(DIP(dp, di_uid)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_uid
: (dp)->dp2.di_uid), 1)) != NULL((void *)0))
538 printf("%s ", p);
539 else
540#endif
541 printf("%u ", (unsigned)DIP(dp, di_uid)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_uid
: (dp)->dp2.di_uid));
542 printf("MODE=%o\n", DIP(dp, di_mode)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_mode
: (dp)->dp2.di_mode));
543 if (preen)
544 printf("%s: ", cdevname());
545 printf("SIZE=%llu ", (unsigned long long)DIP(dp, di_size)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_size
: (dp)->dp2.di_size));
546 t = DIP(dp, di_mtime)(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_mtime
: (dp)->dp2.di_mtime);
547 p = ctime(&t);
548 printf("MTIME=%12.12s %4.4s ", &p[4], &p[20]);
549}
550
551void
552blkerror(ino_t ino, char *type, daddr_t blk)
553{
554
555 pfatal("%lld %s I=%llu", blk, type, (unsigned long long)ino);
556 printf("\n");
557 switch (GET_ISTATE(ino)(inoinfo(ino)->ino_state)) {
558
559 case FSTATE02:
560 SET_ISTATE(ino, FCLEAR)do { (inoinfo(ino)->ino_state) = (06); } while (0);
561 return;
562
563 case DSTATE03:
564 SET_ISTATE(ino, DCLEAR)do { (inoinfo(ino)->ino_state) = (05); } while (0);
565 return;
566
567 case FCLEAR06:
568 case DCLEAR05:
569 return;
570
571 default:
572 errexit("BAD STATE %d TO BLKERR\n", GET_ISTATE(ino)(inoinfo(ino)->ino_state));
573 /* NOTREACHED */
574 }
575}
576
577/*
578 * allocate an unused inode
579 */
580ino_t
581allocino(ino_t request, int type)
582{
583 ino_t ino;
584 union dinode *dp;
585 struct bufarea *cgbp;
586 struct cg *cgp;
587 int cg;
588 time_t t;
589 struct inostat *info;
590
591 if (request == 0)
592 request = ROOTINO((ufsino_t)2);
593 else if (GET_ISTATE(request)(inoinfo(request)->ino_state) != USTATE01)
594 return (0);
595 for (ino = request; ino < maxino; ino++)
596 if (GET_ISTATE(ino)(inoinfo(ino)->ino_state) == USTATE01)
597 break;
598 if (ino == maxino)
599 return (0);
600 cg = ino_to_cg(&sblock, ino)((ino) / (&(*sblk.b_un.b_fs))->fs_ipg);
601 /* If necessary, extend the inoinfo array. grow exponentially */
602 if ((ino % sblock(*sblk.b_un.b_fs).fs_ipg) >= (uint64_t)inostathead[cg].il_numalloced) {
603 unsigned long newalloced, i;
604 newalloced = MINIMUM(sblock.fs_ipg,((((*sblk.b_un.b_fs).fs_ipg) < ((((2 * inostathead[cg].il_numalloced
) > (10)) ? (2 * inostathead[cg].il_numalloced) : (10)))) ?
((*sblk.b_un.b_fs).fs_ipg) : ((((2 * inostathead[cg].il_numalloced
) > (10)) ? (2 * inostathead[cg].il_numalloced) : (10))))
605 MAXIMUM(2 * inostathead[cg].il_numalloced, 10))((((*sblk.b_un.b_fs).fs_ipg) < ((((2 * inostathead[cg].il_numalloced
) > (10)) ? (2 * inostathead[cg].il_numalloced) : (10)))) ?
((*sblk.b_un.b_fs).fs_ipg) : ((((2 * inostathead[cg].il_numalloced
) > (10)) ? (2 * inostathead[cg].il_numalloced) : (10))));
606 info = Calloc(newalloced, sizeof(struct inostat));
607 if (info == NULL((void *)0)) {
608 pwarn("cannot alloc %zu bytes to extend inoinfo\n",
609 sizeof(struct inostat) * newalloced);
610 return 0;
611 }
612 memmove(info, inostathead[cg].il_stat,
613 inostathead[cg].il_numalloced * sizeof(*info));
614 for (i = inostathead[cg].il_numalloced; i < newalloced; i++) {
615 info[i].ino_state = USTATE01;
616 }
617 if (inostathead[cg].il_numalloced)
618 free(inostathead[cg].il_stat);
619 inostathead[cg].il_stat = info;
620 inostathead[cg].il_numalloced = newalloced;
621 info = inoinfo(ino);
622 }
623 cgbp = cglookup(cg);
624 cgp = cgbp->b_un.b_cg;
625 if (!cg_chkmagic(cgp)((cgp)->cg_magic == 0x090255 || ((struct ocg *)(cgp))->
cg_magic == 0x090255))
626 pfatal("CG %d: BAD MAGIC NUMBER\n", cg);
627 setbit(cg_inosused(cgp), ino % sblock.fs_ipg)(((((cgp)->cg_magic != 0x090255) ? (((struct ocg *)(cgp))->
cg_iused) : ((u_int8_t *)((u_int8_t *)(cgp) + (cgp)->cg_iusedoff
))))[(ino % (*sblk.b_un.b_fs).fs_ipg)>>3] |= 1<<(
(ino % (*sblk.b_un.b_fs).fs_ipg)&(8 -1)));
628 cgp->cg_cs.cs_nifree--;
629
630 switch (type & IFMT0170000) {
631 case IFDIR0040000:
632 SET_ISTATE(ino, DSTATE)do { (inoinfo(ino)->ino_state) = (03); } while (0);
633 cgp->cg_cs.cs_ndir++;
634 break;
635 case IFREG0100000:
636 case IFLNK0120000:
637 SET_ISTATE(ino, FSTATE)do { (inoinfo(ino)->ino_state) = (02); } while (0);
638 break;
639 default:
640 return (0);
641 }
642 dirty(cgbp)(cgbp)->b_dirty = 1;
643 dp = ginode(ino);
644 DIP_SET(dp, di_db[0], allocblk(1))do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_db[0] = (allocblk(1)); else (dp)->dp2.di_db[0] = (allocblk
(1)); } while (0);
645 if (DIP(dp, di_db[0])(((*sblk.b_un.b_fs).fs_magic == 0x011954) ? (dp)->dp1.di_db
[0] : (dp)->dp2.di_db[0]) == 0) {
646 SET_ISTATE(ino, USTATE)do { (inoinfo(ino)->ino_state) = (01); } while (0);
647 return (0);
648 }
649 DIP_SET(dp, di_mode, type)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_mode = (type); else (dp)->dp2.di_mode = (type); } while
(0);
650 DIP_SET(dp, di_uid, geteuid())do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_uid = (geteuid()); else (dp)->dp2.di_uid = (geteuid())
; } while (0);
651 DIP_SET(dp, di_gid, getegid())do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_gid = (getegid()); else (dp)->dp2.di_gid = (getegid())
; } while (0);
652 DIP_SET(dp, di_flags, 0)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_flags = (0); else (dp)->dp2.di_flags = (0); } while (0
);
653 (void)time(&t);
654 DIP_SET(dp, di_atime, t)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_atime = (t); else (dp)->dp2.di_atime = (t); } while (0
);
655 DIP_SET(dp, di_atimensec, 0)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_atimensec = (0); else (dp)->dp2.di_atimensec = (0); } while
(0);
656 DIP_SET(dp, di_mtime, t)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_mtime = (t); else (dp)->dp2.di_mtime = (t); } while (0
);
657 DIP_SET(dp, di_mtimensec, 0)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_mtimensec = (0); else (dp)->dp2.di_mtimensec = (0); } while
(0);
658 DIP_SET(dp, di_ctime, t)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_ctime = (t); else (dp)->dp2.di_ctime = (t); } while (0
);
659 DIP_SET(dp, di_ctimensec, 0)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_ctimensec = (0); else (dp)->dp2.di_ctimensec = (0); } while
(0);
660 DIP_SET(dp, di_size, sblock.fs_fsize)do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_size = ((*sblk.b_un.b_fs).fs_fsize); else (dp)->dp2.di_size
= ((*sblk.b_un.b_fs).fs_fsize); } while (0);
661 DIP_SET(dp, di_blocks, btodb(sblock.fs_fsize))do { if ((*sblk.b_un.b_fs).fs_magic == 0x011954) (dp)->dp1
.di_blocks = ((((*sblk.b_un.b_fs).fs_fsize) >> 9)); else
(dp)->dp2.di_blocks = ((((*sblk.b_un.b_fs).fs_fsize) >>
9)); } while (0);
662 n_files++;
663 inodirty();
664 SET_ITYPE(ino, IFTODT(type))do { (inoinfo(ino)->ino_type) = ((((type) & 0170000) >>
12)); } while (0);
665 return (ino);
666}
667
668/*
669 * deallocate an inode
670 */
671void
672freeino(ino_t ino)
673{
674 struct inodesc idesc;
675 union dinode *dp;
676
677 memset(&idesc, 0, sizeof(struct inodesc));
678 idesc.id_type = ADDR2;
679 idesc.id_func = pass4check;
680 idesc.id_number = ino;
681 dp = ginode(ino);
682 (void)ckinode(dp, &idesc);
683 clearinode(dp)if ((*sblk.b_un.b_fs).fs_magic == 0x011954) { (dp)->dp1 = ufs1_zino
; } else { (dp)->dp2 = ufs2_zino; };
684 inodirty();
685 SET_ISTATE(ino, USTATE)do { (inoinfo(ino)->ino_state) = (01); } while (0);
686 n_files--;
687}