439 lines
12 KiB
C
439 lines
12 KiB
C
/* $NetBSD: pass2.c,v 1.10 2003/08/07 10:04:23 agc 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/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/mount.h>
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#include <sys/buf.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ufs/dir.h>
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#include <ufs/lfs/lfs.h>
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#include <err.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 "bufcache.h"
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#include "vnode.h"
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#include "lfs.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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void
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pass2()
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{
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struct ufs1_dinode *dp;
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struct uvnode *vp;
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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 ufs1_dinode dino;
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char pathbuf[MAXPATHLEN + 1];
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switch (statemap[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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err(8, "%s", "");
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if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
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err(8, "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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err(8, "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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err(8, "%s", "");
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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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err(8, "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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err(8, "%s", "");
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vp = vget(fs, ROOTINO);
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dp = VTOD(vp);
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dp->di_mode &= ~IFMT;
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dp->di_mode |= IFDIR;
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inodirty(VTOI(vp));
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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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err(8, "BAD STATE %d FOR ROOT INODE\n", statemap[ROOTINO]);
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}
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statemap[WINO] = FSTATE;
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typemap[WINO] = DT_WHT;
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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, DIRBLKSIZ);
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if (reply("FIX") == 1) {
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vp = vget(fs, inp->i_number);
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dp = VTOD(vp);
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dp->di_size = inp->i_isize;
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inodirty(VTOI(vp));
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}
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} else if ((inp->i_isize & (DIRBLKSIZ - 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, (unsigned long) inp->i_isize, 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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vp = vget(fs, inp->i_number);
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dp = VTOD(vp);
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dp->di_size = inp->i_isize;
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inodirty(VTOI(vp));
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}
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}
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memset(&dino, 0, sizeof(struct ufs1_dinode));
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dino.di_mode = IFDIR;
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dino.di_size = inp->i_isize;
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memcpy(&dino.di_db[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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register struct direct *dirp = idesc->id_dirp;
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register struct inoinfo *inp;
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int n, entrysize, ret = 0;
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struct ufs1_dinode *dp;
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char *errmsg;
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struct 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 (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) {
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if (dirp->d_ino != idesc->id_number) {
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direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'");
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dirp->d_ino = 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 (dirp->d_type != DT_DIR) {
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'");
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dirp->d_type = DT_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.d_ino = idesc->id_number;
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proto.d_type = DT_DIR;
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proto.d_namlen = 1;
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(void) strlcpy(proto.d_name, ".", sizeof(proto.d_name));
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entrysize = DIRSIZ(0, &proto, 0);
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if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) {
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pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n",
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dirp->d_name);
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} else if (dirp->d_reclen < entrysize) {
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pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n");
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} else if (dirp->d_reclen < 2 * entrysize) {
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proto.d_reclen = dirp->d_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 = dirp->d_reclen - entrysize;
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proto.d_reclen = entrysize;
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memcpy(dirp, &proto, (size_t) entrysize);
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idesc->id_entryno++;
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lncntp[dirp->d_ino]--;
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dirp = (struct direct *) ((char *) (dirp) + entrysize);
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memset(dirp, 0, (size_t) n);
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dirp->d_reclen = 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.d_ino = inp->i_parent;
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proto.d_type = DT_DIR;
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proto.d_namlen = 2;
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(void) strlcpy(proto.d_name, "..", sizeof(proto.d_name));
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entrysize = DIRSIZ(0, &proto, 0);
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if (idesc->id_entryno == 0) {
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n = DIRSIZ(0, dirp, 0);
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if (dirp->d_reclen < n + entrysize)
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goto chk2;
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proto.d_reclen = dirp->d_reclen - n;
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dirp->d_reclen = n;
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idesc->id_entryno++;
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lncntp[dirp->d_ino]--;
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dirp = (struct direct *) ((char *) (dirp) + n);
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memset(dirp, 0, (size_t) proto.d_reclen);
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dirp->d_reclen = proto.d_reclen;
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}
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if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) {
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inp->i_dotdot = dirp->d_ino;
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if (dirp->d_type != DT_DIR) {
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'");
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dirp->d_type = DT_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 (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 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->d_name);
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inp->i_dotdot = (ino_t) - 1;
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} else if (dirp->d_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.d_reclen = dirp->d_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 (dirp->d_ino != 0)
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lncntp[dirp->d_ino]--;
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return (ret | KEEPON);
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chk2:
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if (dirp->d_ino == 0)
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return (ret | KEEPON);
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if (dirp->d_namlen <= 2 &&
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dirp->d_name[0] == '.' &&
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idesc->id_entryno >= 2) {
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if (dirp->d_namlen == 1) {
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direrror(idesc->id_number, "EXTRA '.' ENTRY");
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dirp->d_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->d_name[1] == '.') {
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direrror(idesc->id_number, "EXTRA '..' ENTRY");
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dirp->d_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 (dirp->d_ino >= maxino) {
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fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE");
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n = reply("REMOVE");
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} else if (dirp->d_ino == LFS_IFILE_INUM &&
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idesc->id_number == ROOTINO) {
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if (dirp->d_type != DT_REG) {
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fileerror(idesc->id_number, dirp->d_ino,
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"BAD TYPE FOR IFILE");
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dirp->d_type = DT_REG;
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if (reply("FIX") == 1)
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ret |= ALTERED;
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}
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} else if (((dirp->d_ino == WINO && (dirp->d_type != DT_WHT)) ||
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(dirp->d_ino != WINO && dirp->d_type == DT_WHT))) {
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fileerror(idesc->id_number, dirp->d_ino, "BAD WHITEOUT ENTRY");
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dirp->d_ino = WINO;
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dirp->d_type = DT_WHT;
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if (reply("FIX") == 1)
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ret |= ALTERED;
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} else {
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again:
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switch (statemap[dirp->d_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, dirp->d_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[dirp->d_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, dirp->d_ino, errmsg);
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if ((n = reply("REMOVE")) == 1)
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break;
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dp = ginode(dirp->d_ino);
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statemap[dirp->d_ino] =
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(dp->di_mode & IFMT) == IFDIR ? DSTATE : FSTATE;
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lncntp[dirp->d_ino] = dp->di_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(dirp->d_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);
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getpathname(namebuf, sizeof(namebuf),
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dirp->d_ino, dirp->d_ino);
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pwarn("%s %s %s\n", pathbuf,
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"IS AN EXTRANEOUS HARD LINK TO DIRECTORY",
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namebuf);
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if (preen)
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printf(" (IGNORED)\n");
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else if ((n = reply("REMOVE")) == 1)
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break;
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}
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if (idesc->id_entryno > 2)
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inp->i_parent = idesc->id_number;
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/* fall through */
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case FSTATE:
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if (dirp->d_type != typemap[dirp->d_ino]) {
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fileerror(idesc->id_number, dirp->d_ino,
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"BAD TYPE VALUE");
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dirp->d_type = typemap[dirp->d_ino];
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if (reply("FIX") == 1)
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ret |= ALTERED;
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}
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lncntp[dirp->d_ino]--;
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break;
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default:
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err(8, "BAD STATE %d FOR INODE I=%d",
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statemap[dirp->d_ino], dirp->d_ino);
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}
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}
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if (n == 0)
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return (ret | KEEPON);
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dirp->d_ino = 0;
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return (ret | KEEPON | ALTERED);
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}
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/*
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* Routine to sort disk blocks.
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*/
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static int
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blksort(const void *inpp1, const void *inpp2)
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{
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return ((*(struct inoinfo **) inpp1)->i_blks[0] -
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(*(struct inoinfo **) inpp2)->i_blks[0]);
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}
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