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/* $OpenBSD: pass2.c,v 1.15 2016/04/28 12:17:15 krw Exp $ */ |
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/* $NetBSD: pass2.c,v 1.6 2000/01/28 16:01:46 bouyer Exp $ */ |
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/* |
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* Copyright (c) 1997 Manuel Bouyer. |
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* Copyright (c) 1980, 1986, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/param.h> /* roundup */ |
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#include <sys/time.h> |
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#include <ufs/ext2fs/ext2fs_dinode.h> |
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#include <ufs/ext2fs/ext2fs_dir.h> |
38 |
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#include <ufs/ext2fs/ext2fs.h> |
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40 |
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#include <ufs/ufs/dinode.h> /* for IFMT & friends */ |
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42 |
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#include <stdio.h> |
43 |
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#include <stdlib.h> |
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#include <string.h> |
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#include <limits.h> |
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47 |
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#include "fsck.h" |
48 |
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#include "fsutil.h" |
49 |
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#include "extern.h" |
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51 |
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#define MINDIRSIZE (sizeof (struct ext2fs_dirtemplate)) |
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53 |
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static int pass2check(struct inodesc *); |
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static int blksort(const void *, const void *); |
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void |
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pass2(void) |
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{ |
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struct ext2fs_dinode *dp; |
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struct inoinfo **inpp, *inp; |
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struct inoinfo **inpend; |
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struct inodesc curino; |
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struct ext2fs_dinode dino; |
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char pathbuf[PATH_MAX + 1]; |
65 |
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66 |
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switch (statemap[EXT2_ROOTINO]) { |
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68 |
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case USTATE: |
69 |
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pfatal("ROOT INODE UNALLOCATED"); |
70 |
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if (reply("ALLOCATE") == 0) |
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errexit("%s\n", ""); |
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if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO) |
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errexit("CANNOT ALLOCATE ROOT INODE\n"); |
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break; |
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76 |
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case DCLEAR: |
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pfatal("DUPS/BAD IN ROOT INODE"); |
78 |
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if (reply("REALLOCATE")) { |
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freeino(EXT2_ROOTINO); |
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if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO) |
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errexit("CANNOT ALLOCATE ROOT INODE\n"); |
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break; |
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} |
84 |
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if (reply("CONTINUE") == 0) |
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errexit("%s\n", ""); |
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break; |
87 |
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88 |
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case FSTATE: |
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case FCLEAR: |
90 |
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pfatal("ROOT INODE NOT DIRECTORY"); |
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if (reply("REALLOCATE")) { |
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freeino(EXT2_ROOTINO); |
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if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO) |
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errexit("CANNOT ALLOCATE ROOT INODE\n"); |
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break; |
96 |
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} |
97 |
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if (reply("FIX") == 0) |
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errexit("%s\n", ""); |
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dp = ginode(EXT2_ROOTINO); |
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dp->e2di_mode = htole16((letoh16(dp->e2di_mode) & ~IFMT) | IFDIR); |
101 |
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inodirty(); |
102 |
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break; |
103 |
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104 |
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case DSTATE: |
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break; |
106 |
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107 |
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default: |
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errexit("BAD STATE %d FOR ROOT INODE\n", statemap[EXT2_ROOTINO]); |
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} |
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111 |
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/* |
112 |
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* Sort the directory list into disk block order. |
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*/ |
114 |
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qsort((char *)inpsort, (size_t)inplast, sizeof *inpsort, blksort); |
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/* |
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* Check the integrity of each directory. |
117 |
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*/ |
118 |
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memset(&curino, 0, sizeof(struct inodesc)); |
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curino.id_type = DATA; |
120 |
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curino.id_func = pass2check; |
121 |
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inpend = &inpsort[inplast]; |
122 |
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for (inpp = inpsort; inpp < inpend; inpp++) { |
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inp = *inpp; |
124 |
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if (inp->i_isize == 0) |
125 |
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continue; |
126 |
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if (inp->i_isize < MINDIRSIZE) { |
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direrror(inp->i_number, "DIRECTORY TOO SHORT"); |
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inp->i_isize = roundup(MINDIRSIZE, sblock.e2fs_bsize); |
129 |
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if (reply("FIX") == 1) { |
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dp = ginode(inp->i_number); |
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inossize(dp, inp->i_isize); |
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inodirty(); |
133 |
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} |
134 |
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} else if ((inp->i_isize & (sblock.e2fs_bsize - 1)) != 0) { |
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getpathname(pathbuf, sizeof pathbuf, inp->i_number, |
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inp->i_number); |
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pwarn("DIRECTORY %s: LENGTH %lu NOT MULTIPLE OF %d", |
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pathbuf, (u_long)inp->i_isize, sblock.e2fs_bsize); |
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if (preen) |
140 |
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printf(" (ADJUSTED)\n"); |
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inp->i_isize = roundup(inp->i_isize, sblock.e2fs_bsize); |
142 |
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if (preen || reply("ADJUST") == 1) { |
143 |
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dp = ginode(inp->i_number); |
144 |
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inossize(dp, inp->i_isize); |
145 |
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inodirty(); |
146 |
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} |
147 |
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} |
148 |
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memset(&dino, 0, EXT2_DINODE_SIZE(&sblock)); |
149 |
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dino.e2di_mode = htole16(IFDIR); |
150 |
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inossize(&dino, inp->i_isize); |
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memcpy(&dino.e2di_blocks[0], &inp->i_blks[0], (size_t)inp->i_numblks); |
152 |
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curino.id_number = inp->i_number; |
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curino.id_parent = inp->i_parent; |
154 |
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(void)ckinode(&dino, &curino); |
155 |
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} |
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/* |
157 |
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* Now that the parents of all directories have been found, |
158 |
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* make another pass to verify the value of `..' |
159 |
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*/ |
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for (inpp = inpsort; inpp < inpend; inpp++) { |
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inp = *inpp; |
162 |
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if (inp->i_parent == 0 || inp->i_isize == 0) |
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continue; |
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if (inp->i_dotdot == inp->i_parent || |
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inp->i_dotdot == (ino_t)-1) |
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continue; |
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if (inp->i_dotdot == 0) { |
168 |
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inp->i_dotdot = inp->i_parent; |
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fileerror(inp->i_parent, inp->i_number, "MISSING '..'"); |
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if (reply("FIX") == 0) |
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continue; |
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(void)makeentry(inp->i_number, inp->i_parent, ".."); |
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lncntp[inp->i_parent]--; |
174 |
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continue; |
175 |
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} |
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fileerror(inp->i_parent, inp->i_number, |
177 |
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"BAD INODE NUMBER FOR '..'"); |
178 |
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if (reply("FIX") == 0) |
179 |
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continue; |
180 |
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lncntp[inp->i_dotdot]++; |
181 |
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lncntp[inp->i_parent]--; |
182 |
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inp->i_dotdot = inp->i_parent; |
183 |
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(void)changeino(inp->i_number, "..", inp->i_parent); |
184 |
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} |
185 |
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/* |
186 |
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* Mark all the directories that can be found from the root. |
187 |
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*/ |
188 |
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propagate(); |
189 |
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} |
190 |
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191 |
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static int |
192 |
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pass2check(struct inodesc *idesc) |
193 |
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{ |
194 |
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struct ext2fs_direct *dirp = idesc->id_dirp; |
195 |
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struct inoinfo *inp; |
196 |
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int n, entrysize, ret = 0; |
197 |
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struct ext2fs_dinode *dp; |
198 |
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char *errmsg; |
199 |
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struct ext2fs_direct proto; |
200 |
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char namebuf[PATH_MAX + 1]; |
201 |
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char pathbuf[PATH_MAX + 1]; |
202 |
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203 |
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/* |
204 |
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* check for "." |
205 |
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*/ |
206 |
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if (idesc->id_entryno != 0) |
207 |
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goto chk1; |
208 |
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if (letoh32(dirp->e2d_ino) != 0 && dirp->e2d_namlen == 1 && |
209 |
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dirp->e2d_name[0] == '.') { |
210 |
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if (letoh32(dirp->e2d_ino) != idesc->id_number) { |
211 |
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direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'"); |
212 |
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dirp->e2d_ino = htole32(idesc->id_number); |
213 |
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if (reply("FIX") == 1) |
214 |
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ret |= ALTERED; |
215 |
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} |
216 |
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if (sblock.e2fs.e2fs_rev > E2FS_REV0 && |
217 |
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(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE) |
218 |
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&& (dirp->e2d_type != EXT2_FT_DIR)) { |
219 |
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'"); |
220 |
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dirp->e2d_type = EXT2_FT_DIR; |
221 |
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if (reply("FIX") == 1) |
222 |
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ret |= ALTERED; |
223 |
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} |
224 |
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goto chk1; |
225 |
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} |
226 |
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direrror(idesc->id_number, "MISSING '.'"); |
227 |
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proto.e2d_ino = htole32(idesc->id_number); |
228 |
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proto.e2d_namlen = 1; |
229 |
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if (sblock.e2fs.e2fs_rev > E2FS_REV0 && |
230 |
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(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE)) |
231 |
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proto.e2d_type = EXT2_FT_DIR; |
232 |
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else |
233 |
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proto.e2d_type = 0; |
234 |
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(void)strlcpy(proto.e2d_name, ".", sizeof proto.e2d_name); |
235 |
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entrysize = EXT2FS_DIRSIZ(proto.e2d_namlen); |
236 |
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if (letoh32(dirp->e2d_ino) != 0 && strcmp(dirp->e2d_name, "..") != 0) { |
237 |
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pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n", |
238 |
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dirp->e2d_name); |
239 |
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} else if (letoh16(dirp->e2d_reclen) < entrysize) { |
240 |
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pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n"); |
241 |
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} else if (letoh16(dirp->e2d_reclen) < 2 * entrysize) { |
242 |
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proto.e2d_reclen = dirp->e2d_reclen; |
243 |
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memcpy(dirp, &proto, (size_t)entrysize); |
244 |
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if (reply("FIX") == 1) |
245 |
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ret |= ALTERED; |
246 |
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} else { |
247 |
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n = letoh16(dirp->e2d_reclen) - entrysize; |
248 |
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proto.e2d_reclen = htole16(entrysize); |
249 |
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memcpy(dirp, &proto, (size_t)entrysize); |
250 |
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idesc->id_entryno++; |
251 |
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lncntp[letoh32(dirp->e2d_ino)]--; |
252 |
|
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dirp = (struct ext2fs_direct *)((char *)(dirp) + entrysize); |
253 |
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memset(dirp, 0, (size_t)n); |
254 |
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dirp->e2d_reclen = htole16(n); |
255 |
|
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if (reply("FIX") == 1) |
256 |
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ret |= ALTERED; |
257 |
|
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} |
258 |
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chk1: |
259 |
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if (idesc->id_entryno > 1) |
260 |
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goto chk2; |
261 |
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inp = getinoinfo(idesc->id_number); |
262 |
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proto.e2d_ino = htole32(inp->i_parent); |
263 |
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proto.e2d_namlen = 2; |
264 |
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if (sblock.e2fs.e2fs_rev > E2FS_REV0 && |
265 |
|
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(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE)) |
266 |
|
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proto.e2d_type = EXT2_FT_DIR; |
267 |
|
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else |
268 |
|
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proto.e2d_type = 0; |
269 |
|
|
(void)strlcpy(proto.e2d_name, "..", sizeof proto.e2d_name); |
270 |
|
|
entrysize = EXT2FS_DIRSIZ(2); |
271 |
|
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if (idesc->id_entryno == 0) { |
272 |
|
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n = EXT2FS_DIRSIZ(dirp->e2d_namlen); |
273 |
|
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if (letoh16(dirp->e2d_reclen) < n + entrysize) |
274 |
|
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goto chk2; |
275 |
|
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proto.e2d_reclen = htole16(letoh16(dirp->e2d_reclen) - n); |
276 |
|
|
dirp->e2d_reclen = htole16(n); |
277 |
|
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idesc->id_entryno++; |
278 |
|
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lncntp[letoh32(dirp->e2d_ino)]--; |
279 |
|
|
dirp = (struct ext2fs_direct *)((char *)(dirp) + n); |
280 |
|
|
memset(dirp, 0, (size_t)letoh16(proto.e2d_reclen)); |
281 |
|
|
dirp->e2d_reclen = proto.e2d_reclen; |
282 |
|
|
} |
283 |
|
|
if (letoh32(dirp->e2d_ino) != 0 && |
284 |
|
|
dirp->e2d_namlen == 2 && |
285 |
|
|
strncmp(dirp->e2d_name, "..", 2) == 0) { |
286 |
|
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inp->i_dotdot = letoh32(dirp->e2d_ino); |
287 |
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 && |
288 |
|
|
(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE) |
289 |
|
|
&& dirp->e2d_type != EXT2_FT_DIR) { |
290 |
|
|
direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'"); |
291 |
|
|
dirp->e2d_type = EXT2_FT_DIR; |
292 |
|
|
if (reply("FIX") == 1) |
293 |
|
|
ret |= ALTERED; |
294 |
|
|
} |
295 |
|
|
goto chk2; |
296 |
|
|
} |
297 |
|
|
if (letoh32(dirp->e2d_ino) != 0 && |
298 |
|
|
dirp->e2d_namlen == 1 && |
299 |
|
|
strncmp(dirp->e2d_name, ".", 1) != 0) { |
300 |
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); |
301 |
|
|
pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n", |
302 |
|
|
dirp->e2d_name); |
303 |
|
|
inp->i_dotdot = (ino_t)-1; |
304 |
|
|
} else if (letoh16(dirp->e2d_reclen) < entrysize) { |
305 |
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); |
306 |
|
|
pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n"); |
307 |
|
|
inp->i_dotdot = (ino_t)-1; |
308 |
|
|
} else if (inp->i_parent != 0) { |
309 |
|
|
/* |
310 |
|
|
* We know the parent, so fix now. |
311 |
|
|
*/ |
312 |
|
|
inp->i_dotdot = inp->i_parent; |
313 |
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); |
314 |
|
|
proto.e2d_reclen = dirp->e2d_reclen; |
315 |
|
|
memcpy(dirp, &proto, (size_t)entrysize); |
316 |
|
|
if (reply("FIX") == 1) |
317 |
|
|
ret |= ALTERED; |
318 |
|
|
} |
319 |
|
|
idesc->id_entryno++; |
320 |
|
|
if (letoh32(dirp->e2d_ino) != 0) |
321 |
|
|
lncntp[letoh32(dirp->e2d_ino)]--; |
322 |
|
|
return (ret|KEEPON); |
323 |
|
|
chk2: |
324 |
|
|
if (letoh32(dirp->e2d_ino) == 0) |
325 |
|
|
return (ret|KEEPON); |
326 |
|
|
if (dirp->e2d_namlen <= 2 && |
327 |
|
|
dirp->e2d_name[0] == '.' && |
328 |
|
|
idesc->id_entryno >= 2) { |
329 |
|
|
if (dirp->e2d_namlen == 1) { |
330 |
|
|
direrror(idesc->id_number, "EXTRA '.' ENTRY"); |
331 |
|
|
dirp->e2d_ino = 0; |
332 |
|
|
if (reply("FIX") == 1) |
333 |
|
|
ret |= ALTERED; |
334 |
|
|
return (KEEPON | ret); |
335 |
|
|
} |
336 |
|
|
if (dirp->e2d_name[1] == '.') { |
337 |
|
|
direrror(idesc->id_number, "EXTRA '..' ENTRY"); |
338 |
|
|
dirp->e2d_ino = 0; |
339 |
|
|
if (reply("FIX") == 1) |
340 |
|
|
ret |= ALTERED; |
341 |
|
|
return (KEEPON | ret); |
342 |
|
|
} |
343 |
|
|
} |
344 |
|
|
idesc->id_entryno++; |
345 |
|
|
n = 0; |
346 |
|
|
if (letoh32(dirp->e2d_ino) > maxino || |
347 |
|
|
(letoh32(dirp->e2d_ino) < EXT2_FIRSTINO && |
348 |
|
|
letoh32(dirp->e2d_ino) != EXT2_ROOTINO)) { |
349 |
|
|
fileerror(idesc->id_number, letoh32(dirp->e2d_ino), "I OUT OF RANGE"); |
350 |
|
|
n = reply("REMOVE"); |
351 |
|
|
} else { |
352 |
|
|
again: |
353 |
|
|
switch (statemap[letoh32(dirp->e2d_ino)]) { |
354 |
|
|
case USTATE: |
355 |
|
|
if (idesc->id_entryno <= 2) |
356 |
|
|
break; |
357 |
|
|
fileerror(idesc->id_number, letoh32(dirp->e2d_ino), "UNALLOCATED"); |
358 |
|
|
n = reply("REMOVE"); |
359 |
|
|
break; |
360 |
|
|
|
361 |
|
|
case DCLEAR: |
362 |
|
|
case FCLEAR: |
363 |
|
|
if (idesc->id_entryno <= 2) |
364 |
|
|
break; |
365 |
|
|
if (statemap[letoh32(dirp->e2d_ino)] == FCLEAR) |
366 |
|
|
errmsg = "DUP/BAD"; |
367 |
|
|
else if (!preen) |
368 |
|
|
errmsg = "ZERO LENGTH DIRECTORY"; |
369 |
|
|
else { |
370 |
|
|
n = 1; |
371 |
|
|
break; |
372 |
|
|
} |
373 |
|
|
fileerror(idesc->id_number, letoh32(dirp->e2d_ino), errmsg); |
374 |
|
|
if ((n = reply("REMOVE")) == 1) |
375 |
|
|
break; |
376 |
|
|
dp = ginode(letoh32(dirp->e2d_ino)); |
377 |
|
|
statemap[letoh32(dirp->e2d_ino)] = |
378 |
|
|
(letoh16(dp->e2di_mode) & IFMT) == IFDIR ? DSTATE : FSTATE; |
379 |
|
|
lncntp[letoh32(dirp->e2d_ino)] = letoh16(dp->e2di_nlink); |
380 |
|
|
goto again; |
381 |
|
|
|
382 |
|
|
case DSTATE: |
383 |
|
|
case DFOUND: |
384 |
|
|
inp = getinoinfo(letoh32(dirp->e2d_ino)); |
385 |
|
|
if (inp->i_parent != 0 && idesc->id_entryno > 2) { |
386 |
|
|
getpathname(pathbuf, sizeof pathbuf, |
387 |
|
|
idesc->id_number, idesc->id_number); |
388 |
|
|
getpathname(namebuf, sizeof namebuf, |
389 |
|
|
letoh32(dirp->e2d_ino), letoh32(dirp->e2d_ino)); |
390 |
|
|
pwarn("%s %s %s\n", pathbuf, |
391 |
|
|
"IS AN EXTRANEOUS HARD LINK TO DIRECTORY", |
392 |
|
|
namebuf); |
393 |
|
|
if (preen) |
394 |
|
|
printf(" (IGNORED)\n"); |
395 |
|
|
else if ((n = reply("REMOVE")) == 1) |
396 |
|
|
break; |
397 |
|
|
} |
398 |
|
|
if (idesc->id_entryno > 2) |
399 |
|
|
inp->i_parent = idesc->id_number; |
400 |
|
|
/* fall through */ |
401 |
|
|
|
402 |
|
|
case FSTATE: |
403 |
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 && |
404 |
|
|
(sblock.e2fs.e2fs_features_incompat & |
405 |
|
|
EXT2F_INCOMPAT_FTYPE) && |
406 |
|
|
dirp->e2d_type != |
407 |
|
|
inot2ext2dt(typemap[letoh32(dirp->e2d_ino)])) { |
408 |
|
|
dirp->e2d_type = |
409 |
|
|
inot2ext2dt(typemap[letoh32(dirp->e2d_ino)]); |
410 |
|
|
fileerror(idesc->id_number, |
411 |
|
|
letoh32(dirp->e2d_ino), |
412 |
|
|
"BAD TYPE VALUE"); |
413 |
|
|
if (reply("FIX") == 1) |
414 |
|
|
ret |= ALTERED; |
415 |
|
|
} |
416 |
|
|
lncntp[letoh32(dirp->e2d_ino)]--; |
417 |
|
|
break; |
418 |
|
|
|
419 |
|
|
default: |
420 |
|
|
errexit("BAD STATE %d FOR INODE I=%llu\n", |
421 |
|
|
statemap[letoh32(dirp->e2d_ino)], |
422 |
|
|
(unsigned long long)letoh32(dirp->e2d_ino)); |
423 |
|
|
} |
424 |
|
|
} |
425 |
|
|
if (n == 0) |
426 |
|
|
return (ret|KEEPON); |
427 |
|
|
dirp->e2d_ino = 0; |
428 |
|
|
return (ret|KEEPON|ALTERED); |
429 |
|
|
} |
430 |
|
|
|
431 |
|
|
/* |
432 |
|
|
* Routine to sort disk blocks. |
433 |
|
|
*/ |
434 |
|
|
static int |
435 |
|
|
blksort(const void *inpp1, const void *inpp2) |
436 |
|
|
{ |
437 |
|
|
return ((* (struct inoinfo **) inpp1)->i_blks[0] - |
438 |
|
|
(* (struct inoinfo **) inpp2)->i_blks[0]); |
439 |
|
|
} |