431 lines
12 KiB
C
431 lines
12 KiB
C
/*
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef lint
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static char sccsid[] = "@(#)pass2.c 8.2 (Berkeley) 2/27/94";
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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/ufs/dinode.h>
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#include <ufs/ufs/dir.h>
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#include <ufs/ffs/fs.h>
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#include <stdlib.h>
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#include <string.h>
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#include "fsck.h"
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#define MINDIRSIZE (sizeof (struct dirtemplate))
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int pass2check(), blksort();
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pass2()
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{
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register struct dinode *dp;
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register struct inoinfo **inpp, *inp;
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struct inoinfo **inpend;
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struct inodesc curino;
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struct 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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errexit("");
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if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
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errexit("CANNOT ALLOCATE ROOT INODE\n");
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break;
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case DCLEAR:
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pfatal("DUPS/BAD IN ROOT INODE");
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if (reply("REALLOCATE")) {
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freeino(ROOTINO);
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if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
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errexit("CANNOT ALLOCATE ROOT INODE\n");
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break;
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}
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if (reply("CONTINUE") == 0)
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errexit("");
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break;
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case FSTATE:
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case FCLEAR:
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pfatal("ROOT INODE NOT DIRECTORY");
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if (reply("REALLOCATE")) {
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freeino(ROOTINO);
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if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
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errexit("CANNOT ALLOCATE ROOT INODE\n");
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break;
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}
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if (reply("FIX") == 0)
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errexit("");
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dp = ginode(ROOTINO);
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dp->di_mode &= ~IFMT;
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dp->di_mode |= 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[ROOTINO]);
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}
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statemap[ROOTINO] = DFOUND;
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/*
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* Sort the directory list into disk block order.
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*/
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qsort((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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bzero((char *)&curino, sizeof(struct inodesc));
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curino.id_type = DATA;
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curino.id_func = pass2check;
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dp = &dino;
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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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dp = ginode(inp->i_number);
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dp->di_size = inp->i_isize;
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inodirty();
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dp = &dino;
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}
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} else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) {
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getpathname(pathbuf, inp->i_number, inp->i_number);
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pwarn("DIRECTORY %s: LENGTH %d NOT MULTIPLE OF %d",
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pathbuf, 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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dp = ginode(inp->i_number);
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dp->di_size = roundup(inp->i_isize, DIRBLKSIZ);
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inodirty();
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dp = &dino;
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}
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}
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bzero((char *)&dino, sizeof(struct dinode));
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dino.di_mode = IFDIR;
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dp->di_size = inp->i_isize;
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bcopy((char *)&inp->i_blks[0], (char *)&dp->di_db[0],
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(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(dp, &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 (statemap[inp->i_parent] == DFOUND &&
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statemap[inp->i_number] == DSTATE)
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statemap[inp->i_number] = DFOUND;
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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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pass2check(idesc)
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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 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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* If converting, set directory entry type.
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*/
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if (doinglevel2 && dirp->d_ino > 0 && dirp->d_ino < maxino) {
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dirp->d_type = typemap[dirp->d_ino];
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ret |= ALTERED;
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}
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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 (newinofmt && 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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if (newinofmt)
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proto.d_type = DT_DIR;
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else
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proto.d_type = 0;
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proto.d_namlen = 1;
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(void)strcpy(proto.d_name, ".");
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entrysize = DIRSIZ(0, &proto);
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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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bcopy((char *)&proto, (char *)dirp, (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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bcopy((char *)&proto, (char *)dirp, (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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bzero((char *)dirp, (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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if (newinofmt)
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proto.d_type = DT_DIR;
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else
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proto.d_type = 0;
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proto.d_namlen = 2;
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(void)strcpy(proto.d_name, "..");
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entrysize = DIRSIZ(0, &proto);
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if (idesc->id_entryno == 0) {
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n = DIRSIZ(0, dirp);
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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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bzero((char *)dirp, (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 (newinofmt && 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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bcopy((char *)&proto, (char *)dirp, (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 {
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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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if (statemap[idesc->id_number] == DFOUND)
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statemap[dirp->d_ino] = DFOUND;
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/* fall through */
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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, idesc->id_number,
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idesc->id_number);
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getpathname(namebuf, 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 (newinofmt && 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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errexit("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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blksort(inpp1, inpp2)
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struct inoinfo **inpp1, **inpp2;
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{
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return ((*inpp1)->i_blks[0] - (*inpp2)->i_blks[0]);
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}
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