470 lines
14 KiB
C
470 lines
14 KiB
C
/* $NetBSD: pass2.c,v 1.15 2009/10/19 18:41:08 bouyer 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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/*
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* Copyright (c) 1997 Manuel Bouyer.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)pass2.c 8.6 (Berkeley) 10/27/94";
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#else
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__RCSID("$NetBSD: pass2.c,v 1.15 2009/10/19 18:41:08 bouyer Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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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>
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#include <ufs/ext2fs/ext2fs.h>
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#include <ufs/ufs/dinode.h> /* for IFMT & friends */
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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 "fsck.h"
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#include "fsutil.h"
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#include "extern.h"
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#include "exitvalues.h"
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#define MINDIRSIZE (sizeof (struct ext2fs_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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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[MAXPATHLEN + 1];
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switch (statemap[EXT2_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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exit(FSCK_EXIT_CHECK_FAILED);
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if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO)
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errexit("CANNOT ALLOCATE ROOT INODE");
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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(EXT2_ROOTINO);
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if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO)
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errexit("CANNOT ALLOCATE ROOT INODE");
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break;
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}
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if (reply("CONTINUE") == 0)
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exit(FSCK_EXIT_CHECK_FAILED);
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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(EXT2_ROOTINO);
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if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO)
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errexit("CANNOT ALLOCATE ROOT INODE");
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break;
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}
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if (reply("FIX") == 0)
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exit(FSCK_EXIT_CHECK_FAILED);
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dp = ginode(EXT2_ROOTINO);
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dp->e2di_mode = h2fs16((fs2h16(dp->e2di_mode) & ~IFMT) | IFDIR);
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inodirty();
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break;
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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", statemap[EXT2_ROOTINO]);
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}
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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((char *)inpsort, (size_t)inplast, sizeof *inpsort, blksort);
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/*
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* Check the integrity of each directory.
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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;
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inpend = &inpsort[inplast];
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for (inpp = inpsort; inpp < inpend; inpp++) {
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inp = *inpp;
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if (inp->i_isize == 0)
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continue;
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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);
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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();
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}
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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)
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printf(" (ADJUSTED)\n");
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inp->i_isize = roundup(inp->i_isize, sblock.e2fs_bsize);
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if (preen || reply("ADJUST") == 1) {
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dp = ginode(inp->i_number);
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inossize(dp, inp->i_isize);
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inodirty();
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}
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}
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memset(&dino, 0, sizeof(struct ext2fs_dinode));
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dino.e2di_mode = h2fs16(IFDIR);
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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);
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curino.id_number = inp->i_number;
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curino.id_parent = inp->i_parent;
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(void)ckinode(&dino, &curino);
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}
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/*
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* Now that the parents of all directories have been found,
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* make another pass to verify the value of `..'
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*/
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for (inpp = inpsort; inpp < inpend; inpp++) {
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inp = *inpp;
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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) {
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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]--;
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continue;
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}
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fileerror(inp->i_parent, inp->i_number,
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"BAD INODE NUMBER FOR '..'");
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if (reply("FIX") == 0)
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continue;
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lncntp[inp->i_dotdot]++;
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lncntp[inp->i_parent]--;
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inp->i_dotdot = inp->i_parent;
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(void)changeino(inp->i_number, "..", inp->i_parent);
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}
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/*
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* Mark all the directories that can be found from the root.
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*/
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propagate();
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}
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static int
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pass2check(struct inodesc *idesc)
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{
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struct ext2fs_direct *dirp = idesc->id_dirp;
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struct inoinfo *inp;
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int n, entrysize, ret = 0;
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struct ext2fs_dinode *dp;
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const char *errmsg;
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struct ext2fs_direct proto;
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char namebuf[MAXPATHLEN + 1];
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char pathbuf[MAXPATHLEN + 1];
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/*
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* check for "."
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*/
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if (idesc->id_entryno != 0)
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goto chk1;
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if (fs2h32(dirp->e2d_ino) != 0 && dirp->e2d_namlen == 1 &&
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dirp->e2d_name[0] == '.') {
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if (fs2h32(dirp->e2d_ino) != idesc->id_number) {
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direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'");
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dirp->e2d_ino = h2fs32(idesc->id_number);
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if (reply("FIX") == 1)
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ret |= ALTERED;
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}
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if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
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(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE)
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&& (dirp->e2d_type != EXT2_FT_DIR)) {
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'");
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dirp->e2d_type = EXT2_FT_DIR;
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if (reply("FIX") == 1)
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ret |= ALTERED;
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}
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goto chk1;
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}
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direrror(idesc->id_number, "MISSING '.'");
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proto.e2d_ino = h2fs32(idesc->id_number);
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proto.e2d_namlen = 1;
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if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
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(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE))
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proto.e2d_type = EXT2_FT_DIR;
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else
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proto.e2d_type = 0;
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(void)strlcpy(proto.e2d_name, ".", sizeof(proto.e2d_name));
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entrysize = EXT2FS_DIRSIZ(proto.e2d_namlen);
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if (fs2h32(dirp->e2d_ino) != 0 && strcmp(dirp->e2d_name, "..") != 0) {
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pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n",
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dirp->e2d_name);
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} else if (fs2h16(dirp->e2d_reclen) < entrysize) {
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pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n");
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} else if (fs2h16(dirp->e2d_reclen) < 2 * entrysize) {
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proto.e2d_reclen = dirp->e2d_reclen;
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memcpy(dirp, &proto, (size_t)entrysize);
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if (reply("FIX") == 1)
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ret |= ALTERED;
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} else {
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n = fs2h16(dirp->e2d_reclen) - entrysize;
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proto.e2d_reclen = h2fs16(entrysize);
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memcpy(dirp, &proto, (size_t)entrysize);
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idesc->id_entryno++;
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lncntp[fs2h32(dirp->e2d_ino)]--;
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dirp = (struct ext2fs_direct *)((char *)(dirp) + entrysize);
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memset(dirp, 0, (size_t)n);
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dirp->e2d_reclen = h2fs16(n);
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if (reply("FIX") == 1)
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ret |= ALTERED;
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}
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chk1:
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if (idesc->id_entryno > 1)
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goto chk2;
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inp = getinoinfo(idesc->id_number);
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proto.e2d_ino = h2fs32(inp->i_parent);
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proto.e2d_namlen = 2;
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if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
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(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE))
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proto.e2d_type = EXT2_FT_DIR;
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else
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proto.e2d_type = 0;
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(void)strlcpy(proto.e2d_name, "..", sizeof(proto.e2d_name));
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entrysize = EXT2FS_DIRSIZ(2);
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if (idesc->id_entryno == 0) {
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n = EXT2FS_DIRSIZ(dirp->e2d_namlen);
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if (fs2h16(dirp->e2d_reclen) < n + entrysize)
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goto chk2;
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proto.e2d_reclen = h2fs16(fs2h16(dirp->e2d_reclen) - n);
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dirp->e2d_reclen = h2fs16(n);
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idesc->id_entryno++;
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lncntp[fs2h32(dirp->e2d_ino)]--;
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dirp = (struct ext2fs_direct *)((char *)(dirp) + n);
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memset(dirp, 0, (size_t)fs2h16(proto.e2d_reclen));
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dirp->e2d_reclen = proto.e2d_reclen;
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}
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if (fs2h32(dirp->e2d_ino) != 0 &&
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dirp->e2d_namlen == 2 &&
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strncmp(dirp->e2d_name, "..", 2) == 0) {
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inp->i_dotdot = fs2h32(dirp->e2d_ino);
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if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
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(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE)
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&& dirp->e2d_type != EXT2_FT_DIR) {
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'");
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dirp->e2d_type = EXT2_FT_DIR;
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if (reply("FIX") == 1)
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ret |= ALTERED;
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}
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goto chk2;
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}
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if (fs2h32(dirp->e2d_ino) != 0 &&
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dirp->e2d_namlen == 1 &&
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strncmp(dirp->e2d_name, ".", 1) != 0) {
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fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
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pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n",
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dirp->e2d_name);
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inp->i_dotdot = (ino_t)-1;
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} else if (fs2h16(dirp->e2d_reclen) < entrysize) {
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fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
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pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n");
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inp->i_dotdot = (ino_t)-1;
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} else if (inp->i_parent != 0) {
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/*
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* We know the parent, so fix now.
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*/
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inp->i_dotdot = inp->i_parent;
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fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
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proto.e2d_reclen = dirp->e2d_reclen;
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memcpy(dirp, &proto, (size_t)entrysize);
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if (reply("FIX") == 1)
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ret |= ALTERED;
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}
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idesc->id_entryno++;
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if (fs2h32(dirp->e2d_ino) != 0)
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lncntp[fs2h32(dirp->e2d_ino)]--;
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return (ret|KEEPON);
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chk2:
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if (fs2h32(dirp->e2d_ino) == 0)
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return (ret|KEEPON);
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if (dirp->e2d_namlen <= 2 &&
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dirp->e2d_name[0] == '.' &&
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idesc->id_entryno >= 2) {
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if (dirp->e2d_namlen == 1) {
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direrror(idesc->id_number, "EXTRA '.' ENTRY");
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dirp->e2d_ino = 0;
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if (reply("FIX") == 1)
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ret |= ALTERED;
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return (KEEPON | ret);
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}
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if (dirp->e2d_name[1] == '.') {
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direrror(idesc->id_number, "EXTRA '..' ENTRY");
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dirp->e2d_ino = 0;
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if (reply("FIX") == 1)
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ret |= ALTERED;
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return (KEEPON | ret);
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}
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}
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idesc->id_entryno++;
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n = 0;
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if (fs2h32(dirp->e2d_ino) > maxino ||
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(fs2h32(dirp->e2d_ino) < EXT2_FIRSTINO &&
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fs2h32(dirp->e2d_ino) != EXT2_ROOTINO)) {
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fileerror(idesc->id_number, fs2h32(dirp->e2d_ino), "I OUT OF RANGE");
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n = reply("REMOVE");
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} else {
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again:
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switch (statemap[fs2h32(dirp->e2d_ino)]) {
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case USTATE:
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if (idesc->id_entryno <= 2)
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break;
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fileerror(idesc->id_number, fs2h32(dirp->e2d_ino), "UNALLOCATED");
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n = reply("REMOVE");
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break;
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case DCLEAR:
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case FCLEAR:
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if (idesc->id_entryno <= 2)
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break;
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if (statemap[fs2h32(dirp->e2d_ino)] == FCLEAR)
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errmsg = "DUP/BAD";
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else if (!preen)
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errmsg = "ZERO LENGTH DIRECTORY";
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else {
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n = 1;
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break;
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}
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fileerror(idesc->id_number, fs2h32(dirp->e2d_ino), errmsg);
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if ((n = reply("REMOVE")) == 1)
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break;
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dp = ginode(fs2h32(dirp->e2d_ino));
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statemap[fs2h32(dirp->e2d_ino)] =
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(fs2h16(dp->e2di_mode) & IFMT) == IFDIR ? DSTATE : FSTATE;
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lncntp[fs2h32(dirp->e2d_ino)] = fs2h16(dp->e2di_nlink);
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goto again;
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case DSTATE:
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case DFOUND:
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inp = getinoinfo(fs2h32(dirp->e2d_ino));
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if (inp->i_parent != 0 && idesc->id_entryno > 2) {
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getpathname(pathbuf, sizeof(pathbuf),
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idesc->id_number, idesc->id_number);
|
|
getpathname(namebuf, sizeof(namebuf),
|
|
fs2h32(dirp->e2d_ino),
|
|
fs2h32(dirp->e2d_ino));
|
|
pwarn("%s %s %s\n", pathbuf,
|
|
"IS AN EXTRANEOUS HARD LINK TO DIRECTORY",
|
|
namebuf);
|
|
if (preen)
|
|
printf(" (IGNORED)\n");
|
|
else if ((n = reply("REMOVE")) == 1)
|
|
break;
|
|
}
|
|
if (idesc->id_entryno > 2)
|
|
inp->i_parent = idesc->id_number;
|
|
/* fall through */
|
|
|
|
case FSTATE:
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
|
|
(sblock.e2fs.e2fs_features_incompat &
|
|
EXT2F_INCOMPAT_FTYPE) &&
|
|
dirp->e2d_type !=
|
|
inot2ext2dt(typemap[fs2h32(dirp->e2d_ino)])) {
|
|
dirp->e2d_type =
|
|
inot2ext2dt(typemap[fs2h32(dirp->e2d_ino)]);
|
|
fileerror(idesc->id_number,
|
|
fs2h32(dirp->e2d_ino),
|
|
"BAD TYPE VALUE");
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
lncntp[fs2h32(dirp->e2d_ino)]--;
|
|
break;
|
|
|
|
default:
|
|
errexit("BAD STATE %d FOR INODE I=%d",
|
|
statemap[fs2h32(dirp->e2d_ino)], fs2h32(dirp->e2d_ino));
|
|
}
|
|
}
|
|
if (n == 0)
|
|
return (ret|KEEPON);
|
|
dirp->e2d_ino = 0;
|
|
return (ret|KEEPON|ALTERED);
|
|
}
|
|
|
|
/*
|
|
* Routine to sort disk blocks.
|
|
*/
|
|
static int
|
|
blksort(const void *inpp1, const void *inpp2)
|
|
{
|
|
return ((* (const struct inoinfo * const*) inpp1)->i_blks[0] -
|
|
(* (const struct inoinfo * const*) inpp2)->i_blks[0]);
|
|
}
|