471 lines
14 KiB
C
471 lines
14 KiB
C
/* $NetBSD: pass2.c,v 1.15 2009/10/19 18:41:08 bouyer Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1980, 1986, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1997 Manuel Bouyer.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)pass2.c 8.6 (Berkeley) 10/27/94";
|
|
#else
|
|
__RCSID("$NetBSD: pass2.c,v 1.15 2009/10/19 18:41:08 bouyer Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <ufs/ext2fs/ext2fs_dinode.h>
|
|
#include <ufs/ext2fs/ext2fs_dir.h>
|
|
#include <ufs/ext2fs/ext2fs.h>
|
|
|
|
#include <ufs/ufs/dinode.h> /* for IFMT & friends */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "fsck.h"
|
|
#include "fsutil.h"
|
|
#include "extern.h"
|
|
#include "exitvalues.h"
|
|
|
|
#define MINDIRSIZE (sizeof (struct ext2fs_dirtemplate))
|
|
|
|
static int pass2check(struct inodesc *);
|
|
static int blksort(const void *, const void *);
|
|
|
|
void
|
|
pass2(void)
|
|
{
|
|
struct ext2fs_dinode *dp;
|
|
struct inoinfo **inpp, *inp;
|
|
struct inoinfo **inpend;
|
|
struct inodesc curino;
|
|
struct ext2fs_dinode dino;
|
|
char pathbuf[MAXPATHLEN + 1];
|
|
|
|
switch (statemap[EXT2_ROOTINO]) {
|
|
|
|
case USTATE:
|
|
pfatal("ROOT INODE UNALLOCATED");
|
|
if (reply("ALLOCATE") == 0)
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO)
|
|
errexit("CANNOT ALLOCATE ROOT INODE");
|
|
break;
|
|
|
|
case DCLEAR:
|
|
pfatal("DUPS/BAD IN ROOT INODE");
|
|
if (reply("REALLOCATE")) {
|
|
freeino(EXT2_ROOTINO);
|
|
if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO)
|
|
errexit("CANNOT ALLOCATE ROOT INODE");
|
|
break;
|
|
}
|
|
if (reply("CONTINUE") == 0)
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
break;
|
|
|
|
case FSTATE:
|
|
case FCLEAR:
|
|
pfatal("ROOT INODE NOT DIRECTORY");
|
|
if (reply("REALLOCATE")) {
|
|
freeino(EXT2_ROOTINO);
|
|
if (allocdir(EXT2_ROOTINO, EXT2_ROOTINO, 0755) != EXT2_ROOTINO)
|
|
errexit("CANNOT ALLOCATE ROOT INODE");
|
|
break;
|
|
}
|
|
if (reply("FIX") == 0)
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
dp = ginode(EXT2_ROOTINO);
|
|
dp->e2di_mode = h2fs16((fs2h16(dp->e2di_mode) & ~IFMT) | IFDIR);
|
|
inodirty();
|
|
break;
|
|
|
|
case DSTATE:
|
|
break;
|
|
|
|
default:
|
|
errexit("BAD STATE %d FOR ROOT INODE", statemap[EXT2_ROOTINO]);
|
|
}
|
|
|
|
/*
|
|
* Sort the directory list into disk block order.
|
|
*/
|
|
qsort((char *)inpsort, (size_t)inplast, sizeof *inpsort, blksort);
|
|
/*
|
|
* Check the integrity of each directory.
|
|
*/
|
|
memset(&curino, 0, sizeof(struct inodesc));
|
|
curino.id_type = DATA;
|
|
curino.id_func = pass2check;
|
|
inpend = &inpsort[inplast];
|
|
for (inpp = inpsort; inpp < inpend; inpp++) {
|
|
inp = *inpp;
|
|
if (inp->i_isize == 0)
|
|
continue;
|
|
if (inp->i_isize < MINDIRSIZE) {
|
|
direrror(inp->i_number, "DIRECTORY TOO SHORT");
|
|
inp->i_isize = roundup(MINDIRSIZE, sblock.e2fs_bsize);
|
|
if (reply("FIX") == 1) {
|
|
dp = ginode(inp->i_number);
|
|
inossize(dp, inp->i_isize);
|
|
inodirty();
|
|
}
|
|
} else if ((inp->i_isize & (sblock.e2fs_bsize - 1)) != 0) {
|
|
getpathname(pathbuf, sizeof(pathbuf), inp->i_number,
|
|
inp->i_number);
|
|
pwarn("DIRECTORY %s: LENGTH %lu NOT MULTIPLE OF %d",
|
|
pathbuf, (u_long)inp->i_isize, sblock.e2fs_bsize);
|
|
if (preen)
|
|
printf(" (ADJUSTED)\n");
|
|
inp->i_isize = roundup(inp->i_isize, sblock.e2fs_bsize);
|
|
if (preen || reply("ADJUST") == 1) {
|
|
dp = ginode(inp->i_number);
|
|
inossize(dp, inp->i_isize);
|
|
inodirty();
|
|
}
|
|
}
|
|
memset(&dino, 0, sizeof(struct ext2fs_dinode));
|
|
dino.e2di_mode = h2fs16(IFDIR);
|
|
inossize(&dino, inp->i_isize);
|
|
memcpy(&dino.e2di_blocks[0], &inp->i_blks[0], (size_t)inp->i_numblks);
|
|
curino.id_number = inp->i_number;
|
|
curino.id_parent = inp->i_parent;
|
|
(void)ckinode(&dino, &curino);
|
|
}
|
|
/*
|
|
* Now that the parents of all directories have been found,
|
|
* make another pass to verify the value of `..'
|
|
*/
|
|
for (inpp = inpsort; inpp < inpend; inpp++) {
|
|
inp = *inpp;
|
|
if (inp->i_parent == 0 || inp->i_isize == 0)
|
|
continue;
|
|
if (inp->i_dotdot == inp->i_parent ||
|
|
inp->i_dotdot == (ino_t)-1)
|
|
continue;
|
|
if (inp->i_dotdot == 0) {
|
|
inp->i_dotdot = inp->i_parent;
|
|
fileerror(inp->i_parent, inp->i_number, "MISSING '..'");
|
|
if (reply("FIX") == 0)
|
|
continue;
|
|
(void)makeentry(inp->i_number, inp->i_parent, "..");
|
|
lncntp[inp->i_parent]--;
|
|
continue;
|
|
}
|
|
fileerror(inp->i_parent, inp->i_number,
|
|
"BAD INODE NUMBER FOR '..'");
|
|
if (reply("FIX") == 0)
|
|
continue;
|
|
lncntp[inp->i_dotdot]++;
|
|
lncntp[inp->i_parent]--;
|
|
inp->i_dotdot = inp->i_parent;
|
|
(void)changeino(inp->i_number, "..", inp->i_parent);
|
|
}
|
|
/*
|
|
* Mark all the directories that can be found from the root.
|
|
*/
|
|
propagate();
|
|
}
|
|
|
|
static int
|
|
pass2check(struct inodesc *idesc)
|
|
{
|
|
struct ext2fs_direct *dirp = idesc->id_dirp;
|
|
struct inoinfo *inp;
|
|
int n, entrysize, ret = 0;
|
|
struct ext2fs_dinode *dp;
|
|
const char *errmsg;
|
|
struct ext2fs_direct proto;
|
|
char namebuf[MAXPATHLEN + 1];
|
|
char pathbuf[MAXPATHLEN + 1];
|
|
|
|
/*
|
|
* check for "."
|
|
*/
|
|
if (idesc->id_entryno != 0)
|
|
goto chk1;
|
|
if (fs2h32(dirp->e2d_ino) != 0 && dirp->e2d_namlen == 1 &&
|
|
dirp->e2d_name[0] == '.') {
|
|
if (fs2h32(dirp->e2d_ino) != idesc->id_number) {
|
|
direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'");
|
|
dirp->e2d_ino = h2fs32(idesc->id_number);
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
|
|
(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE)
|
|
&& (dirp->e2d_type != EXT2_FT_DIR)) {
|
|
direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'");
|
|
dirp->e2d_type = EXT2_FT_DIR;
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
goto chk1;
|
|
}
|
|
direrror(idesc->id_number, "MISSING '.'");
|
|
proto.e2d_ino = h2fs32(idesc->id_number);
|
|
proto.e2d_namlen = 1;
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
|
|
(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE))
|
|
proto.e2d_type = EXT2_FT_DIR;
|
|
else
|
|
proto.e2d_type = 0;
|
|
(void)strlcpy(proto.e2d_name, ".", sizeof(proto.e2d_name));
|
|
entrysize = EXT2FS_DIRSIZ(proto.e2d_namlen);
|
|
if (fs2h32(dirp->e2d_ino) != 0 && strcmp(dirp->e2d_name, "..") != 0) {
|
|
pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n",
|
|
dirp->e2d_name);
|
|
} else if (fs2h16(dirp->e2d_reclen) < entrysize) {
|
|
pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n");
|
|
} else if (fs2h16(dirp->e2d_reclen) < 2 * entrysize) {
|
|
proto.e2d_reclen = dirp->e2d_reclen;
|
|
memcpy(dirp, &proto, (size_t)entrysize);
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
} else {
|
|
n = fs2h16(dirp->e2d_reclen) - entrysize;
|
|
proto.e2d_reclen = h2fs16(entrysize);
|
|
memcpy(dirp, &proto, (size_t)entrysize);
|
|
idesc->id_entryno++;
|
|
lncntp[fs2h32(dirp->e2d_ino)]--;
|
|
dirp = (struct ext2fs_direct *)((char *)(dirp) + entrysize);
|
|
memset(dirp, 0, (size_t)n);
|
|
dirp->e2d_reclen = h2fs16(n);
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
chk1:
|
|
if (idesc->id_entryno > 1)
|
|
goto chk2;
|
|
inp = getinoinfo(idesc->id_number);
|
|
proto.e2d_ino = h2fs32(inp->i_parent);
|
|
proto.e2d_namlen = 2;
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
|
|
(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE))
|
|
proto.e2d_type = EXT2_FT_DIR;
|
|
else
|
|
proto.e2d_type = 0;
|
|
(void)strlcpy(proto.e2d_name, "..", sizeof(proto.e2d_name));
|
|
entrysize = EXT2FS_DIRSIZ(2);
|
|
if (idesc->id_entryno == 0) {
|
|
n = EXT2FS_DIRSIZ(dirp->e2d_namlen);
|
|
if (fs2h16(dirp->e2d_reclen) < n + entrysize)
|
|
goto chk2;
|
|
proto.e2d_reclen = h2fs16(fs2h16(dirp->e2d_reclen) - n);
|
|
dirp->e2d_reclen = h2fs16(n);
|
|
idesc->id_entryno++;
|
|
lncntp[fs2h32(dirp->e2d_ino)]--;
|
|
dirp = (struct ext2fs_direct *)((char *)(dirp) + n);
|
|
memset(dirp, 0, (size_t)fs2h16(proto.e2d_reclen));
|
|
dirp->e2d_reclen = proto.e2d_reclen;
|
|
}
|
|
if (fs2h32(dirp->e2d_ino) != 0 &&
|
|
dirp->e2d_namlen == 2 &&
|
|
strncmp(dirp->e2d_name, "..", 2) == 0) {
|
|
inp->i_dotdot = fs2h32(dirp->e2d_ino);
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
|
|
(sblock.e2fs.e2fs_features_incompat & EXT2F_INCOMPAT_FTYPE)
|
|
&& dirp->e2d_type != EXT2_FT_DIR) {
|
|
direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'");
|
|
dirp->e2d_type = EXT2_FT_DIR;
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
goto chk2;
|
|
}
|
|
if (fs2h32(dirp->e2d_ino) != 0 &&
|
|
dirp->e2d_namlen == 1 &&
|
|
strncmp(dirp->e2d_name, ".", 1) != 0) {
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
|
|
pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n",
|
|
dirp->e2d_name);
|
|
inp->i_dotdot = (ino_t)-1;
|
|
} else if (fs2h16(dirp->e2d_reclen) < entrysize) {
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
|
|
pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n");
|
|
inp->i_dotdot = (ino_t)-1;
|
|
} else if (inp->i_parent != 0) {
|
|
/*
|
|
* We know the parent, so fix now.
|
|
*/
|
|
inp->i_dotdot = inp->i_parent;
|
|
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
|
|
proto.e2d_reclen = dirp->e2d_reclen;
|
|
memcpy(dirp, &proto, (size_t)entrysize);
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
idesc->id_entryno++;
|
|
if (fs2h32(dirp->e2d_ino) != 0)
|
|
lncntp[fs2h32(dirp->e2d_ino)]--;
|
|
return (ret|KEEPON);
|
|
chk2:
|
|
if (fs2h32(dirp->e2d_ino) == 0)
|
|
return (ret|KEEPON);
|
|
if (dirp->e2d_namlen <= 2 &&
|
|
dirp->e2d_name[0] == '.' &&
|
|
idesc->id_entryno >= 2) {
|
|
if (dirp->e2d_namlen == 1) {
|
|
direrror(idesc->id_number, "EXTRA '.' ENTRY");
|
|
dirp->e2d_ino = 0;
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
return (KEEPON | ret);
|
|
}
|
|
if (dirp->e2d_name[1] == '.') {
|
|
direrror(idesc->id_number, "EXTRA '..' ENTRY");
|
|
dirp->e2d_ino = 0;
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
return (KEEPON | ret);
|
|
}
|
|
}
|
|
idesc->id_entryno++;
|
|
n = 0;
|
|
if (fs2h32(dirp->e2d_ino) > maxino ||
|
|
(fs2h32(dirp->e2d_ino) < EXT2_FIRSTINO &&
|
|
fs2h32(dirp->e2d_ino) != EXT2_ROOTINO)) {
|
|
fileerror(idesc->id_number, fs2h32(dirp->e2d_ino), "I OUT OF RANGE");
|
|
n = reply("REMOVE");
|
|
} else {
|
|
again:
|
|
switch (statemap[fs2h32(dirp->e2d_ino)]) {
|
|
case USTATE:
|
|
if (idesc->id_entryno <= 2)
|
|
break;
|
|
fileerror(idesc->id_number, fs2h32(dirp->e2d_ino), "UNALLOCATED");
|
|
n = reply("REMOVE");
|
|
break;
|
|
|
|
case DCLEAR:
|
|
case FCLEAR:
|
|
if (idesc->id_entryno <= 2)
|
|
break;
|
|
if (statemap[fs2h32(dirp->e2d_ino)] == FCLEAR)
|
|
errmsg = "DUP/BAD";
|
|
else if (!preen)
|
|
errmsg = "ZERO LENGTH DIRECTORY";
|
|
else {
|
|
n = 1;
|
|
break;
|
|
}
|
|
fileerror(idesc->id_number, fs2h32(dirp->e2d_ino), errmsg);
|
|
if ((n = reply("REMOVE")) == 1)
|
|
break;
|
|
dp = ginode(fs2h32(dirp->e2d_ino));
|
|
statemap[fs2h32(dirp->e2d_ino)] =
|
|
(fs2h16(dp->e2di_mode) & IFMT) == IFDIR ? DSTATE : FSTATE;
|
|
lncntp[fs2h32(dirp->e2d_ino)] = fs2h16(dp->e2di_nlink);
|
|
goto again;
|
|
|
|
case DSTATE:
|
|
case DFOUND:
|
|
inp = getinoinfo(fs2h32(dirp->e2d_ino));
|
|
if (inp->i_parent != 0 && idesc->id_entryno > 2) {
|
|
getpathname(pathbuf, sizeof(pathbuf),
|
|
idesc->id_number, idesc->id_number);
|
|
getpathname(namebuf, sizeof(namebuf),
|
|
fs2h32(dirp->e2d_ino),
|
|
fs2h32(dirp->e2d_ino));
|
|
pwarn("%s %s %s\n", pathbuf,
|
|
"IS AN EXTRANEOUS HARD LINK TO DIRECTORY",
|
|
namebuf);
|
|
if (preen)
|
|
printf(" (IGNORED)\n");
|
|
else if ((n = reply("REMOVE")) == 1)
|
|
break;
|
|
}
|
|
if (idesc->id_entryno > 2)
|
|
inp->i_parent = idesc->id_number;
|
|
/* fall through */
|
|
|
|
case FSTATE:
|
|
if (sblock.e2fs.e2fs_rev > E2FS_REV0 &&
|
|
(sblock.e2fs.e2fs_features_incompat &
|
|
EXT2F_INCOMPAT_FTYPE) &&
|
|
dirp->e2d_type !=
|
|
inot2ext2dt(typemap[fs2h32(dirp->e2d_ino)])) {
|
|
dirp->e2d_type =
|
|
inot2ext2dt(typemap[fs2h32(dirp->e2d_ino)]);
|
|
fileerror(idesc->id_number,
|
|
fs2h32(dirp->e2d_ino),
|
|
"BAD TYPE VALUE");
|
|
if (reply("FIX") == 1)
|
|
ret |= ALTERED;
|
|
}
|
|
lncntp[fs2h32(dirp->e2d_ino)]--;
|
|
break;
|
|
|
|
default:
|
|
errexit("BAD STATE %d FOR INODE I=%d",
|
|
statemap[fs2h32(dirp->e2d_ino)], fs2h32(dirp->e2d_ino));
|
|
}
|
|
}
|
|
if (n == 0)
|
|
return (ret|KEEPON);
|
|
dirp->e2d_ino = 0;
|
|
return (ret|KEEPON|ALTERED);
|
|
}
|
|
|
|
/*
|
|
* Routine to sort disk blocks.
|
|
*/
|
|
static int
|
|
blksort(const void *inpp1, const void *inpp2)
|
|
{
|
|
return ((* (const struct inoinfo * const*) inpp1)->i_blks[0] -
|
|
(* (const struct inoinfo * const*) inpp2)->i_blks[0]);
|
|
}
|