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/* $OpenBSD: pass2.c,v 1.37 2015/01/20 18:22:21 deraadt Exp $ */ |
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/* $NetBSD: pass2.c,v 1.17 1996/09/27 22:45:15 christos Exp $ */ |
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/* |
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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> /* DEV_BSIZE roundup */ |
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#include <sys/time.h> |
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#include <ufs/ufs/dinode.h> |
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#include <ufs/ufs/dir.h> |
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#include <ufs/ffs/fs.h> |
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#include <stdio.h> |
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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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#include "fsck.h" |
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#include "fsutil.h" |
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#include "extern.h" |
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#define MINDIRSIZE (sizeof(struct dirtemplate)) |
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static int pass2check(struct inodesc *); |
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static int blksort(const void *, const void *); |
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static int info_max; |
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static int info_pos; |
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static int |
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pass2_info1(char *buf, size_t buflen) |
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{ |
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return (snprintf(buf, buflen, "phase 2, directory %d/%d", |
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info_pos, info_max) > 0); |
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} |
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static int |
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pass2_info2(char *buf, size_t buflen) |
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{ |
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if (snprintf(buf, buflen, "phase 2, parent directory %d/%d", |
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info_pos, info_max) > 0) |
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return (strlen(buf)); |
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return (0); |
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} |
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void |
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pass2(void) |
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{ |
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union dinode *dp; |
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struct inoinfo **inpp, *inp, *pinp; |
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struct inoinfo **inpend; |
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struct inodesc curino; |
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union dinode dino; |
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char pathbuf[PATH_MAX + 1]; |
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int i; |
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switch (GET_ISTATE(ROOTINO)) { |
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case USTATE: |
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pfatal("ROOT INODE UNALLOCATED"); |
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if (reply("ALLOCATE") == 0) { |
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ckfini(0); |
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errexit("%s", ""); |
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} |
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if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) |
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errexit("CANNOT ALLOCATE ROOT INODE\n"); |
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break; |
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case DCLEAR: |
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pfatal("DUPS/BAD IN ROOT INODE"); |
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if (reply("REALLOCATE")) { |
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freeino(ROOTINO); |
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if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) |
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errexit("CANNOT ALLOCATE ROOT INODE\n"); |
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break; |
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} |
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if (reply("CONTINUE") == 0) { |
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ckfini(0); |
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errexit("%s", ""); |
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} |
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break; |
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case FSTATE: |
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case FCLEAR: |
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pfatal("ROOT INODE NOT DIRECTORY"); |
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if (reply("REALLOCATE")) { |
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freeino(ROOTINO); |
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if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) |
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errexit("CANNOT ALLOCATE ROOT INODE\n"); |
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break; |
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} |
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if (reply("FIX") == 0) { |
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ckfini(0); |
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errexit("%s", ""); |
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} |
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dp = ginode(ROOTINO); |
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DIP_SET(dp, di_mode, DIP(dp, di_mode) & ~IFMT); |
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DIP_SET(dp, di_mode, DIP(dp, di_mode) | IFDIR); |
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inodirty(); |
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break; |
127 |
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128 |
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case DSTATE: |
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break; |
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default: |
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errexit("BAD STATE %d FOR ROOT INODE\n", GET_ISTATE(ROOTINO)); |
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} |
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SET_ISTATE(ROOTINO, DFOUND); |
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/* |
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* Sort the directory list into disk block order. |
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*/ |
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qsort(inpsort, (size_t)inplast, sizeof *inpsort, blksort); |
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/* |
140 |
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* Check the integrity of each directory. |
141 |
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*/ |
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memset(&curino, 0, sizeof(struct inodesc)); |
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curino.id_type = DATA; |
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curino.id_func = pass2check; |
145 |
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inpend = &inpsort[inplast]; |
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info_pos = 0; |
147 |
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info_max = inpend - inpsort; |
148 |
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info_fn = pass2_info1; |
149 |
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for (inpp = inpsort; inpp < inpend; inpp++) { |
150 |
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inp = *inpp; |
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info_pos ++; |
152 |
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if (inp->i_isize == 0) |
153 |
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continue; |
154 |
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if (inp->i_isize < MINDIRSIZE) { |
155 |
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direrror(inp->i_number, "DIRECTORY TOO SHORT"); |
156 |
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inp->i_isize = roundup(MINDIRSIZE, DIRBLKSIZ); |
157 |
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if (reply("FIX") == 1) { |
158 |
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dp = ginode(inp->i_number); |
159 |
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DIP_SET(dp, di_size, inp->i_isize); |
160 |
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inodirty(); |
161 |
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} |
162 |
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} else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) { |
163 |
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getpathname(pathbuf, sizeof pathbuf, |
164 |
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inp->i_number, inp->i_number); |
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if (usedsoftdep) |
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pfatal("%s %s: LENGTH %zu NOT MULTIPLE of %d", |
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"DIRECTORY", pathbuf, inp->i_isize, |
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DIRBLKSIZ); |
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else |
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pwarn("%s %s: LENGTH %zu NOT MULTIPLE OF %d", |
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"DIRECTORY", pathbuf, inp->i_isize, |
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DIRBLKSIZ); |
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if (preen) |
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printf(" (ADJUSTED)\n"); |
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inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ); |
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if (preen || reply("ADJUST") == 1) { |
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dp = ginode(inp->i_number); |
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DIP_SET(dp, di_size, inp->i_isize); |
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inodirty(); |
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} |
181 |
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} |
182 |
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memset(&dino, 0, sizeof(union dinode)); |
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dp = &dino; |
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DIP_SET(dp, di_mode, IFDIR); |
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DIP_SET(dp, di_size, inp->i_isize); |
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for (i = 0; |
187 |
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i < (inp->i_numblks<NDADDR ? inp->i_numblks : NDADDR); |
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i++) |
189 |
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DIP_SET(dp, di_db[i], inp->i_blks[i]); |
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if (inp->i_numblks > NDADDR) |
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for (i = 0; i < NIADDR; i++) |
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DIP_SET(dp, di_ib[i], inp->i_blks[NDADDR + i]); |
193 |
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curino.id_number = inp->i_number; |
194 |
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curino.id_parent = inp->i_parent; |
195 |
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(void)ckinode(dp, &curino); |
196 |
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} |
197 |
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/* |
198 |
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* Now that the parents of all directories have been found, |
199 |
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* make another pass to verify the value of `..' |
200 |
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*/ |
201 |
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info_pos = 0; |
202 |
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info_fn = pass2_info2; |
203 |
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for (inpp = inpsort; inpp < inpend; inpp++) { |
204 |
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inp = *inpp; |
205 |
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info_pos++; |
206 |
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if (inp->i_parent == 0 || inp->i_isize == 0) |
207 |
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continue; |
208 |
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if (inp->i_dotdot == inp->i_parent || |
209 |
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inp->i_dotdot == (ino_t)-1) |
210 |
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continue; |
211 |
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if (inp->i_dotdot == 0) { |
212 |
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inp->i_dotdot = inp->i_parent; |
213 |
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fileerror(inp->i_parent, inp->i_number, "MISSING '..'"); |
214 |
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if (reply("FIX") == 0) |
215 |
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continue; |
216 |
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(void)makeentry(inp->i_number, inp->i_parent, ".."); |
217 |
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ILNCOUNT(inp->i_parent)--; |
218 |
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continue; |
219 |
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} |
220 |
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fileerror(inp->i_parent, inp->i_number, |
221 |
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"BAD INODE NUMBER FOR '..'"); |
222 |
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if (reply("FIX") == 0) |
223 |
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continue; |
224 |
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ILNCOUNT(inp->i_dotdot)++; |
225 |
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ILNCOUNT(inp->i_parent)--; |
226 |
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inp->i_dotdot = inp->i_parent; |
227 |
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(void)changeino(inp->i_number, "..", inp->i_parent); |
228 |
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} |
229 |
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info_fn = NULL; |
230 |
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/* |
231 |
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* Create a list of children for each directory. |
232 |
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*/ |
233 |
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inpend = &inpsort[inplast]; |
234 |
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for (inpp = inpsort; inpp < inpend; inpp++) { |
235 |
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inp = *inpp; |
236 |
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if (inp->i_parent == 0 || |
237 |
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inp->i_number == ROOTINO) |
238 |
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continue; |
239 |
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pinp = getinoinfo(inp->i_parent); |
240 |
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inp->i_sibling = pinp->i_child; |
241 |
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pinp->i_child = inp; |
242 |
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} |
243 |
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/* |
244 |
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* Mark all the directories that can be found from the root. |
245 |
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*/ |
246 |
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propagate(ROOTINO); |
247 |
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} |
248 |
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249 |
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static int |
250 |
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pass2check(struct inodesc *idesc) |
251 |
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{ |
252 |
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struct direct *dirp = idesc->id_dirp; |
253 |
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struct inoinfo *inp; |
254 |
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int n, entrysize, ret = 0; |
255 |
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union dinode *dp; |
256 |
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char *errmsg; |
257 |
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struct direct proto; |
258 |
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char namebuf[PATH_MAX + 1]; |
259 |
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char pathbuf[PATH_MAX + 1]; |
260 |
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|
261 |
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/* |
262 |
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* check for "." |
263 |
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*/ |
264 |
|
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if (idesc->id_entryno != 0) |
265 |
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goto chk1; |
266 |
|
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if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) { |
267 |
|
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if (dirp->d_ino != idesc->id_number) { |
268 |
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direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'"); |
269 |
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dirp->d_ino = idesc->id_number; |
270 |
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if (reply("FIX") == 1) |
271 |
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ret |= ALTERED; |
272 |
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|
} |
273 |
|
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if (dirp->d_type != DT_DIR) { |
274 |
|
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'"); |
275 |
|
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dirp->d_type = DT_DIR; |
276 |
|
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if (reply("FIX") == 1) |
277 |
|
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ret |= ALTERED; |
278 |
|
|
} |
279 |
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goto chk1; |
280 |
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} |
281 |
|
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direrror(idesc->id_number, "MISSING '.'"); |
282 |
|
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proto.d_ino = idesc->id_number; |
283 |
|
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proto.d_type = DT_DIR; |
284 |
|
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proto.d_namlen = 1; |
285 |
|
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(void)strlcpy(proto.d_name, ".", sizeof proto.d_name); |
286 |
|
|
entrysize = DIRSIZ(0, &proto); |
287 |
|
|
if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) { |
288 |
|
|
pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n", |
289 |
|
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dirp->d_name); |
290 |
|
|
} else if (dirp->d_reclen < entrysize) { |
291 |
|
|
pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n"); |
292 |
|
|
} else if (dirp->d_reclen < 2 * entrysize) { |
293 |
|
|
proto.d_reclen = dirp->d_reclen; |
294 |
|
|
memcpy(dirp, &proto, (size_t)entrysize); |
295 |
|
|
if (reply("FIX") == 1) |
296 |
|
|
ret |= ALTERED; |
297 |
|
|
} else { |
298 |
|
|
n = dirp->d_reclen - entrysize; |
299 |
|
|
proto.d_reclen = entrysize; |
300 |
|
|
memcpy(dirp, &proto, (size_t)entrysize); |
301 |
|
|
idesc->id_entryno++; |
302 |
|
|
ILNCOUNT(dirp->d_ino)--; |
303 |
|
|
dirp = (struct direct *)((char *)(dirp) + entrysize); |
304 |
|
|
memset(dirp, 0, (size_t)n); |
305 |
|
|
dirp->d_reclen = n; |
306 |
|
|
if (reply("FIX") == 1) |
307 |
|
|
ret |= ALTERED; |
308 |
|
|
} |
309 |
|
|
chk1: |
310 |
|
|
if (idesc->id_entryno > 1) |
311 |
|
|
goto chk2; |
312 |
|
|
inp = getinoinfo(idesc->id_number); |
313 |
|
|
proto.d_ino = inp->i_parent; |
314 |
|
|
proto.d_type = DT_DIR; |
315 |
|
|
proto.d_namlen = 2; |
316 |
|
|
(void)strlcpy(proto.d_name, "..", sizeof proto.d_name); |
317 |
|
|
entrysize = DIRSIZ(0, &proto); |
318 |
|
|
if (idesc->id_entryno == 0) { |
319 |
|
|
n = DIRSIZ(0, dirp); |
320 |
|
|
if (dirp->d_reclen < n + entrysize) |
321 |
|
|
goto chk2; |
322 |
|
|
proto.d_reclen = dirp->d_reclen - n; |
323 |
|
|
dirp->d_reclen = n; |
324 |
|
|
idesc->id_entryno++; |
325 |
|
|
ILNCOUNT(dirp->d_ino)--; |
326 |
|
|
dirp = (struct direct *)((char *)(dirp) + n); |
327 |
|
|
memset(dirp, 0, (size_t)proto.d_reclen); |
328 |
|
|
dirp->d_reclen = proto.d_reclen; |
329 |
|
|
} |
330 |
|
|
if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) { |
331 |
|
|
inp->i_dotdot = dirp->d_ino; |
332 |
|
|
if (dirp->d_type != DT_DIR) { |
333 |
|
|
direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'"); |
334 |
|
|
dirp->d_type = DT_DIR; |
335 |
|
|
if (reply("FIX") == 1) |
336 |
|
|
ret |= ALTERED; |
337 |
|
|
} |
338 |
|
|
goto chk2; |
339 |
|
|
} |
340 |
|
|
if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) { |
341 |
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); |
342 |
|
|
pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n", |
343 |
|
|
dirp->d_name); |
344 |
|
|
inp->i_dotdot = -1; |
345 |
|
|
} else if (dirp->d_reclen < entrysize) { |
346 |
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); |
347 |
|
|
pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n"); |
348 |
|
|
inp->i_dotdot = -1; |
349 |
|
|
} else if (inp->i_parent != 0) { |
350 |
|
|
/* |
351 |
|
|
* We know the parent, so fix now. |
352 |
|
|
*/ |
353 |
|
|
inp->i_dotdot = inp->i_parent; |
354 |
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); |
355 |
|
|
proto.d_reclen = dirp->d_reclen; |
356 |
|
|
memcpy(dirp, &proto, (size_t)entrysize); |
357 |
|
|
if (reply("FIX") == 1) |
358 |
|
|
ret |= ALTERED; |
359 |
|
|
} |
360 |
|
|
idesc->id_entryno++; |
361 |
|
|
if (dirp->d_ino != 0) |
362 |
|
|
ILNCOUNT(dirp->d_ino)--; |
363 |
|
|
return (ret|KEEPON); |
364 |
|
|
chk2: |
365 |
|
|
if (dirp->d_ino == 0) |
366 |
|
|
return (ret|KEEPON); |
367 |
|
|
if (dirp->d_namlen <= 2 && |
368 |
|
|
dirp->d_name[0] == '.' && |
369 |
|
|
idesc->id_entryno >= 2) { |
370 |
|
|
if (dirp->d_namlen == 1) { |
371 |
|
|
direrror(idesc->id_number, "EXTRA '.' ENTRY"); |
372 |
|
|
dirp->d_ino = 0; |
373 |
|
|
if (reply("FIX") == 1) |
374 |
|
|
ret |= ALTERED; |
375 |
|
|
return (KEEPON | ret); |
376 |
|
|
} |
377 |
|
|
if (dirp->d_name[1] == '.') { |
378 |
|
|
direrror(idesc->id_number, "EXTRA '..' ENTRY"); |
379 |
|
|
dirp->d_ino = 0; |
380 |
|
|
if (reply("FIX") == 1) |
381 |
|
|
ret |= ALTERED; |
382 |
|
|
return (KEEPON | ret); |
383 |
|
|
} |
384 |
|
|
} |
385 |
|
|
idesc->id_entryno++; |
386 |
|
|
n = 0; |
387 |
|
|
if (dirp->d_ino > maxino) { |
388 |
|
|
fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE"); |
389 |
|
|
n = reply("REMOVE"); |
390 |
|
|
} else { |
391 |
|
|
again: |
392 |
|
|
switch (GET_ISTATE(dirp->d_ino)) { |
393 |
|
|
case USTATE: |
394 |
|
|
if (idesc->id_entryno <= 2) |
395 |
|
|
break; |
396 |
|
|
fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED"); |
397 |
|
|
n = reply("REMOVE"); |
398 |
|
|
break; |
399 |
|
|
|
400 |
|
|
case DCLEAR: |
401 |
|
|
case FCLEAR: |
402 |
|
|
if (idesc->id_entryno <= 2) |
403 |
|
|
break; |
404 |
|
|
if (GET_ISTATE(dirp->d_ino) == FCLEAR) |
405 |
|
|
errmsg = "DUP/BAD"; |
406 |
|
|
else if (!preen && !usedsoftdep) |
407 |
|
|
errmsg = "ZERO LENGTH DIRECTORY"; |
408 |
|
|
else { |
409 |
|
|
n = 1; |
410 |
|
|
break; |
411 |
|
|
} |
412 |
|
|
fileerror(idesc->id_number, dirp->d_ino, errmsg); |
413 |
|
|
if ((n = reply("REMOVE")) == 1) |
414 |
|
|
break; |
415 |
|
|
dp = ginode(dirp->d_ino); |
416 |
|
|
SET_ISTATE(dirp->d_ino, (DIP(dp, di_mode) & IFMT) == |
417 |
|
|
IFDIR ? DSTATE : FSTATE); |
418 |
|
|
ILNCOUNT(dirp->d_ino) = DIP(dp, di_nlink); |
419 |
|
|
goto again; |
420 |
|
|
|
421 |
|
|
case DSTATE: |
422 |
|
|
case DFOUND: |
423 |
|
|
inp = getinoinfo(dirp->d_ino); |
424 |
|
|
if (inp->i_parent != 0 && idesc->id_entryno > 2) { |
425 |
|
|
getpathname(pathbuf, sizeof pathbuf, |
426 |
|
|
idesc->id_number, idesc->id_number); |
427 |
|
|
getpathname(namebuf, sizeof namebuf, |
428 |
|
|
dirp->d_ino, dirp->d_ino); |
429 |
|
|
pwarn("%s %s %s\n", pathbuf, |
430 |
|
|
"IS AN EXTRANEOUS HARD LINK TO DIRECTORY", |
431 |
|
|
namebuf); |
432 |
|
|
if (preen) { |
433 |
|
|
printf (" (REMOVED)\n"); |
434 |
|
|
n = 1; |
435 |
|
|
break; |
436 |
|
|
} |
437 |
|
|
if ((n = reply("REMOVE")) == 1) |
438 |
|
|
break; |
439 |
|
|
} |
440 |
|
|
if (idesc->id_entryno > 2) |
441 |
|
|
inp->i_parent = idesc->id_number; |
442 |
|
|
/* FALLTHROUGH */ |
443 |
|
|
|
444 |
|
|
case FSTATE: |
445 |
|
|
if (dirp->d_type != GET_ITYPE(dirp->d_ino)) { |
446 |
|
|
fileerror(idesc->id_number, dirp->d_ino, |
447 |
|
|
"BAD TYPE VALUE"); |
448 |
|
|
dirp->d_type = GET_ITYPE(dirp->d_ino); |
449 |
|
|
if (reply("FIX") == 1) |
450 |
|
|
ret |= ALTERED; |
451 |
|
|
} |
452 |
|
|
ILNCOUNT(dirp->d_ino)--; |
453 |
|
|
break; |
454 |
|
|
|
455 |
|
|
default: |
456 |
|
|
errexit("BAD STATE %d FOR INODE I=%llu\n", |
457 |
|
|
GET_ISTATE(dirp->d_ino), |
458 |
|
|
(unsigned long long)dirp->d_ino); |
459 |
|
|
} |
460 |
|
|
} |
461 |
|
|
if (n == 0) |
462 |
|
|
return (ret|KEEPON); |
463 |
|
|
dirp->d_ino = 0; |
464 |
|
|
return (ret|KEEPON|ALTERED); |
465 |
|
|
} |
466 |
|
|
|
467 |
|
|
/* |
468 |
|
|
* Routine to sort disk blocks. |
469 |
|
|
*/ |
470 |
|
|
static int |
471 |
|
|
blksort(const void *inpp1, const void *inpp2) |
472 |
|
|
{ |
473 |
|
|
daddr_t d; |
474 |
|
|
|
475 |
|
|
d = (* (struct inoinfo **) inpp1)->i_blks[0] - |
476 |
|
|
(* (struct inoinfo **) inpp2)->i_blks[0]; |
477 |
|
|
if (d < 0) |
478 |
|
|
return (-1); |
479 |
|
|
else if (d > 0) |
480 |
|
|
return (1); |
481 |
|
|
else |
482 |
|
|
return (0); |
483 |
|
|
} |