472 lines
14 KiB
C
472 lines
14 KiB
C
/* $NetBSD: pass2.c,v 1.34 2015/09/21 01:24:23 dholland 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/lfs/lfs.h>
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#include <ufs/lfs/lfs_accessors.h>
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#include <ufs/lfs/lfs_inode.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_user.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(fs) \
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((fs)->lfs_is64 ? sizeof(struct lfs_dirtemplate64) : \
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sizeof(struct lfs_dirtemplate32))
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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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union lfs_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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union lfs_dinode dino;
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char pathbuf[MAXPATHLEN + 1];
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uint16_t mode;
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unsigned ii;
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switch (statemap[ULFS_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(EEXIT, "%s", "");
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if (allocdir(ULFS_ROOTINO, ULFS_ROOTINO, 0755) != ULFS_ROOTINO)
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err(EEXIT, "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(ULFS_ROOTINO);
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if (allocdir(ULFS_ROOTINO, ULFS_ROOTINO, 0755) != ULFS_ROOTINO)
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err(EEXIT, "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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err(EEXIT, "%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(ULFS_ROOTINO);
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if (allocdir(ULFS_ROOTINO, ULFS_ROOTINO, 0755) != ULFS_ROOTINO)
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err(EEXIT, "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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errx(EEXIT, "%s", "");
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vp = vget(fs, ULFS_ROOTINO);
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dp = VTOD(vp);
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mode = lfs_dino_getmode(fs, dp);
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mode &= ~LFS_IFMT;
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mode |= LFS_IFDIR;
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lfs_dino_setmode(fs, dp, mode);
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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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errx(EEXIT, "BAD STATE %d FOR ROOT INODE", statemap[ULFS_ROOTINO]);
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}
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statemap[ULFS_WINO] = FSTATE;
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typemap[ULFS_WINO] = LFS_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(fs)) {
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direrror(inp->i_number, "DIRECTORY TOO SHORT");
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inp->i_isize = roundup(MINDIRSIZE(fs), LFS_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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lfs_dino_setsize(fs, dp, inp->i_isize);
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inodirty(VTOI(vp));
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}
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} else if ((inp->i_isize & (LFS_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, LFS_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, LFS_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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lfs_dino_setsize(fs, dp, 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(dino));
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lfs_dino_setmode(fs, &dino, LFS_IFDIR);
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lfs_dino_setsize(fs, &dino, inp->i_isize);
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for (ii = 0; ii < inp->i_numblks / sizeof(inp->i_blks[0]) &&
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ii < ULFS_NDADDR; ii++) {
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lfs_dino_setdb(fs, &dino, ii, inp->i_blks[ii]);
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}
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for (; ii < inp->i_numblks / sizeof(inp->i_blks[0]); ii++) {
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lfs_dino_setib(fs, &dino, ii - ULFS_NDADDR,
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inp->i_blks[ii]);
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}
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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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LFS_DIRHEADER *dirp = idesc->id_dirp;
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struct inoinfo *inp;
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int n, entrysize, ret = 0;
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union lfs_dinode *dp;
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const char *errmsg;
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LFS_DIRHEADER 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 (lfs_dir_getino(fs, dirp) != 0 && strcmp(lfs_dir_nameptr(fs, dirp), ".") == 0) {
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if (lfs_dir_getino(fs, dirp) != idesc->id_number) {
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direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'");
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if (reply("FIX") == 1) {
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lfs_dir_setino(fs, dirp, idesc->id_number);
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ret |= ALTERED;
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}
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}
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if (lfs_dir_gettype(fs, dirp) != LFS_DT_DIR) {
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'");
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if (reply("FIX") == 1) {
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lfs_dir_settype(fs, dirp, LFS_DT_DIR);
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ret |= ALTERED;
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}
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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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lfs_dir_setino(fs, &proto, idesc->id_number);
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lfs_dir_settype(fs, &proto, LFS_DT_DIR);
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lfs_dir_setnamlen(fs, &proto, 1);
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entrysize = LFS_DIRECTSIZ(fs, 1);
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lfs_dir_setreclen(fs, &proto, entrysize);
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if (lfs_dir_getino(fs, dirp) != 0 && strcmp(lfs_dir_nameptr(fs, dirp), "..") != 0) {
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pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n",
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lfs_dir_nameptr(fs, dirp));
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} else if (lfs_dir_getreclen(fs, dirp) < entrysize) {
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pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n");
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} else if (lfs_dir_getreclen(fs, dirp) < 2 * entrysize) {
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/* convert this entry to a . entry */
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lfs_dir_setreclen(fs, &proto, lfs_dir_getreclen(fs, dirp));
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memcpy(dirp, &proto, sizeof(proto));
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lfs_copydirname(fs, lfs_dir_nameptr(fs, dirp), ".", 1,
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lfs_dir_getreclen(fs, dirp));
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if (reply("FIX") == 1)
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ret |= ALTERED;
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} else {
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/* split this entry and use the beginning for the . entry */
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n = lfs_dir_getreclen(fs, dirp) - entrysize;
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memcpy(dirp, &proto, sizeof(proto));
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lfs_copydirname(fs, lfs_dir_nameptr(fs, dirp), ".", 1,
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lfs_dir_getreclen(fs, dirp));
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idesc->id_entryno++;
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lncntp[lfs_dir_getino(fs, dirp)]--;
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dirp = LFS_NEXTDIR(fs, dirp);
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memset(dirp, 0, (size_t) n);
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lfs_dir_setreclen(fs, dirp, 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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lfs_dir_setino(fs, &proto, inp->i_parent);
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lfs_dir_settype(fs, &proto, LFS_DT_DIR);
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lfs_dir_setnamlen(fs, &proto, 2);
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entrysize = LFS_DIRECTSIZ(fs, 2);
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lfs_dir_setreclen(fs, &proto, entrysize);
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if (idesc->id_entryno == 0) {
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n = LFS_DIRSIZ(fs, dirp);
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if (lfs_dir_getreclen(fs, dirp) < n + entrysize)
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goto chk2;
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lfs_dir_setreclen(fs, &proto, lfs_dir_getreclen(fs, dirp) - n);
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lfs_dir_setreclen(fs, dirp, n);
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idesc->id_entryno++;
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lncntp[lfs_dir_getino(fs, dirp)]--;
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dirp = (LFS_DIRHEADER *) ((char *) (dirp) + n);
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memset(dirp, 0, lfs_dir_getreclen(fs, &proto));
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lfs_dir_setreclen(fs, dirp, lfs_dir_getreclen(fs, &proto));
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}
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if (lfs_dir_getino(fs, dirp) != 0 && strcmp(lfs_dir_nameptr(fs, dirp), "..") == 0) {
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inp->i_dotdot = lfs_dir_getino(fs, dirp);
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if (lfs_dir_gettype(fs, dirp) != LFS_DT_DIR) {
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direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'");
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lfs_dir_settype(fs, dirp, LFS_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 (lfs_dir_getino(fs, dirp) != 0 && strcmp(lfs_dir_nameptr(fs, dirp), ".") != 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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lfs_dir_nameptr(fs, dirp));
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inp->i_dotdot = (ino_t) - 1;
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} else if (lfs_dir_getreclen(fs, dirp) < 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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lfs_dir_setreclen(fs, &proto, lfs_dir_getreclen(fs, dirp));
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memcpy(dirp, &proto, (size_t) entrysize);
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lfs_copydirname(fs, lfs_dir_nameptr(fs, dirp), "..", 2,
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lfs_dir_getreclen(fs, dirp));
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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 (lfs_dir_getino(fs, dirp) != 0)
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lncntp[lfs_dir_getino(fs, dirp)]--;
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return (ret | KEEPON);
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chk2:
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if (lfs_dir_getino(fs, dirp) == 0)
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return (ret | KEEPON);
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if (lfs_dir_getnamlen(fs, dirp) <= 2 &&
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lfs_dir_nameptr(fs, dirp)[0] == '.' &&
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idesc->id_entryno >= 2) {
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if (lfs_dir_getnamlen(fs, dirp) == 1) {
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direrror(idesc->id_number, "EXTRA '.' ENTRY");
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if (reply("FIX") == 1) {
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lfs_dir_setino(fs, dirp, 0);
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ret |= ALTERED;
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}
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return (KEEPON | ret);
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}
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if (lfs_dir_nameptr(fs, dirp)[1] == '.') {
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direrror(idesc->id_number, "EXTRA '..' ENTRY");
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if (reply("FIX") == 1) {
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lfs_dir_setino(fs, dirp, 0);
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ret |= ALTERED;
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}
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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 (lfs_dir_getino(fs, dirp) >= maxino) {
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fileerror(idesc->id_number, lfs_dir_getino(fs, dirp), "I OUT OF RANGE");
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n = reply("REMOVE");
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} else if (lfs_dir_getino(fs, dirp) == LFS_IFILE_INUM &&
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idesc->id_number == ULFS_ROOTINO) {
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if (lfs_dir_gettype(fs, dirp) != LFS_DT_REG) {
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fileerror(idesc->id_number, lfs_dir_getino(fs, dirp),
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"BAD TYPE FOR IFILE");
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if (reply("FIX") == 1) {
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lfs_dir_settype(fs, dirp, LFS_DT_REG);
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ret |= ALTERED;
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}
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}
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} else if (((lfs_dir_getino(fs, dirp) == ULFS_WINO && lfs_dir_gettype(fs, dirp) != LFS_DT_WHT) ||
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(lfs_dir_getino(fs, dirp) != ULFS_WINO && lfs_dir_gettype(fs, dirp) == LFS_DT_WHT))) {
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fileerror(idesc->id_number, lfs_dir_getino(fs, dirp), "BAD WHITEOUT ENTRY");
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if (reply("FIX") == 1) {
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lfs_dir_setino(fs, dirp, ULFS_WINO);
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lfs_dir_settype(fs, dirp, LFS_DT_WHT);
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ret |= ALTERED;
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}
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} else {
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again:
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switch (statemap[lfs_dir_getino(fs, dirp)]) {
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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, lfs_dir_getino(fs, dirp),
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"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[lfs_dir_getino(fs, dirp)] == 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, lfs_dir_getino(fs, dirp), errmsg);
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if ((n = reply("REMOVE")) == 1)
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break;
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dp = ginode(lfs_dir_getino(fs, dirp));
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statemap[lfs_dir_getino(fs, dirp)] =
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(lfs_dino_getmode(fs, dp) & LFS_IFMT) == LFS_IFDIR ? DSTATE : FSTATE;
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lncntp[lfs_dir_getino(fs, dirp)] = lfs_dino_getnlink(fs, dp);
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goto again;
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case DSTATE:
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|
case DFOUND:
|
|
inp = getinoinfo(lfs_dir_getino(fs, dirp));
|
|
if (inp->i_parent != 0 && idesc->id_entryno > 2) {
|
|
getpathname(pathbuf, sizeof(pathbuf),
|
|
idesc->id_number, idesc->id_number);
|
|
getpathname(namebuf, sizeof(namebuf),
|
|
lfs_dir_getino(fs, dirp),
|
|
lfs_dir_getino(fs, dirp));
|
|
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 (lfs_dir_gettype(fs, dirp) != typemap[lfs_dir_getino(fs, dirp)]) {
|
|
fileerror(idesc->id_number,
|
|
lfs_dir_getino(fs, dirp),
|
|
"BAD TYPE VALUE");
|
|
if (debug)
|
|
pwarn("dir has %d, typemap has %d\n",
|
|
lfs_dir_gettype(fs, dirp), typemap[lfs_dir_getino(fs, dirp)]);
|
|
lfs_dir_settype(fs, dirp, typemap[lfs_dir_getino(fs, dirp)]);
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
lncntp[lfs_dir_getino(fs, dirp)]--;
|
|
break;
|
|
|
|
default:
|
|
errx(EEXIT, "BAD STATE %d FOR INODE I=%ju",
|
|
statemap[lfs_dir_getino(fs, dirp)],
|
|
(uintmax_t)lfs_dir_getino(fs, dirp));
|
|
}
|
|
}
|
|
if (n == 0)
|
|
return (ret | KEEPON);
|
|
lfs_dir_setino(fs, dirp, 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]);
|
|
}
|