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32f28b1541
freebsd-skq/sbin/fsck_ffs/pass2.c
Kirk McKusick 1c85e6a35d This commit adds basic support for the UFS2 filesystem. The UFS2 
filesystem expands the inode to 256 bytes to make space for 64-bit
block pointers. It also adds a file-creation time field, an ability
to use jumbo blocks per inode to allow extent like pointer density,
and space for extended attributes (up to twice the filesystem block
size worth of attributes, e.g., on a 16K filesystem, there is space
for 32K of attributes). UFS2 fully supports and runs existing UFS1
filesystems. New filesystems built using newfs can be built in either
UFS1 or UFS2 format using the -O option. In this commit UFS1 is
the default format, so if you want to build UFS2 format filesystems,
you must specify -O 2. This default will be changed to UFS2 when
UFS2 proves itself to be stable. In this commit the boot code for
reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c)
as there is insufficient space in the boot block. Once the size of the
boot block is increased, this code can be defined.

Things to note: the definition of SBSIZE has changed to SBLOCKSIZE.
The header file <ufs/ufs/dinode.h> must be included before
<ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and
ufs_lbn_t.

Still TODO:
Verify that the first level bootstraps work for all the architectures.
Convert the utility ffsinfo to understand UFS2 and test growfs.
Add support for the extended attribute storage. Update soft updates
to ensure integrity of extended attribute storage. Switch the
current extended attribute interfaces to use the extended attribute
storage. Add the extent like functionality (framework is there,
but is currently never used).

Sponsored by: DARPA & NAI Labs.
Reviewed by:	Poul-Henning Kamp <phk@freebsd.org>
2002-06-21 06:18:05 +00:00

467 lines
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/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
#if 0
static const char sccsid[] = "@(#)pass2.c 8.9 (Berkeley) 4/28/95";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ffs/fs.h>
#include <err.h>
#include <string.h>
#include "fsck.h"
#define MINDIRSIZE (sizeof (struct dirtemplate))
static int blksort(const void *, const void *);
static int pass2check(struct inodesc *);
void
pass2(void)
{
union dinode *dp;
struct inoinfo **inpp, *inp;
struct inoinfo **inpend;
struct inodesc curino;
union dinode dino;
int i;
char pathbuf[MAXPATHLEN + 1];
switch (inoinfo(ROOTINO)->ino_state) {
case USTATE:
pfatal("ROOT INODE UNALLOCATED");
if (reply("ALLOCATE") == 0) {
ckfini(0);
exit(EEXIT);
}
if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
errx(EEXIT, "CANNOT ALLOCATE ROOT INODE");
break;
case DCLEAR:
pfatal("DUPS/BAD IN ROOT INODE");
if (reply("REALLOCATE")) {
freeino(ROOTINO);
if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
errx(EEXIT, "CANNOT ALLOCATE ROOT INODE");
break;
}
if (reply("CONTINUE") == 0) {
ckfini(0);
exit(EEXIT);
}
break;
case FSTATE:
case FCLEAR:
pfatal("ROOT INODE NOT DIRECTORY");
if (reply("REALLOCATE")) {
freeino(ROOTINO);
if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO)
errx(EEXIT, "CANNOT ALLOCATE ROOT INODE");
break;
}
if (reply("FIX") == 0) {
ckfini(0);
exit(EEXIT);
}
dp = ginode(ROOTINO);
DIP(dp, di_mode) &= ~IFMT;
DIP(dp, di_mode) |= IFDIR;
inodirty();
break;
case DSTATE:
break;
default:
errx(EEXIT, "BAD STATE %d FOR ROOT INODE",
inoinfo(ROOTINO)->ino_state);
}
inoinfo(ROOTINO)->ino_state = DFOUND;
inoinfo(WINO)->ino_state = FSTATE;
inoinfo(WINO)->ino_type = DT_WHT;
/*
* 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++) {
if (got_siginfo) {
printf("%s: phase 2: dir %d of %d (%d%%)\n", cdevname,
inpp - inpsort, (int)inplast,
(int)((inpp - inpsort) * 100 / inplast));
got_siginfo = 0;
}
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, DIRBLKSIZ);
if (reply("FIX") == 1) {
dp = ginode(inp->i_number);
DIP(dp, di_size) = inp->i_isize;
inodirty();
}
} else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) {
getpathname(pathbuf, inp->i_number, inp->i_number);
if (usedsoftdep)
pfatal("%s %s: LENGTH %d NOT MULTIPLE OF %d",
"DIRECTORY", pathbuf, inp->i_isize,
DIRBLKSIZ);
else
pwarn("%s %s: LENGTH %d NOT MULTIPLE OF %d",
"DIRECTORY", pathbuf, inp->i_isize,
DIRBLKSIZ);
if (preen)
printf(" (ADJUSTED)\n");
inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ);
if (preen || reply("ADJUST") == 1) {
dp = ginode(inp->i_number);
DIP(dp, di_size) =
roundup(inp->i_isize, DIRBLKSIZ);
inodirty();
}
}
dp = &dino;
memset(dp, 0, sizeof(struct ufs2_dinode));
DIP(dp, di_mode) = IFDIR;
DIP(dp, di_size) = inp->i_isize;
for (i = 0;
i < (inp->i_numblks<NDADDR ? inp->i_numblks : NDADDR);
i++)
DIP(dp, di_db[i]) = inp->i_blks[i];
if (inp->i_numblks > NDADDR)
for (i = 0; i < NIADDR; i++)
DIP(dp, di_ib[i]) = inp->i_blks[NDADDR + i];
curino.id_number = inp->i_number;
curino.id_parent = inp->i_parent;
(void)ckinode(dp, &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 (inoinfo(inp->i_parent)->ino_state == DFOUND &&
inoinfo(inp->i_number)->ino_state == DSTATE)
inoinfo(inp->i_number)->ino_state = DFOUND;
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, "..");
inoinfo(inp->i_parent)->ino_linkcnt--;
continue;
}
fileerror(inp->i_parent, inp->i_number,
"BAD INODE NUMBER FOR '..'");
if (reply("FIX") == 0)
continue;
inoinfo(inp->i_dotdot)->ino_linkcnt++;
inoinfo(inp->i_parent)->ino_linkcnt--;
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 direct *dirp = idesc->id_dirp;
struct inoinfo *inp;
int n, entrysize, ret = 0;
union dinode *dp;
char *errmsg;
struct direct proto;
char namebuf[MAXPATHLEN + 1];
char pathbuf[MAXPATHLEN + 1];
/*
* check for "."
*/
if (idesc->id_entryno != 0)
goto chk1;
if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) {
if (dirp->d_ino != idesc->id_number) {
direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'");
dirp->d_ino = idesc->id_number;
if (reply("FIX") == 1)
ret |= ALTERED;
}
if (dirp->d_type != DT_DIR) {
direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'");
dirp->d_type = DT_DIR;
if (reply("FIX") == 1)
ret |= ALTERED;
}
goto chk1;
}
direrror(idesc->id_number, "MISSING '.'");
proto.d_ino = idesc->id_number;
proto.d_type = DT_DIR;
proto.d_namlen = 1;
(void)strcpy(proto.d_name, ".");
entrysize = DIRSIZ(0, &proto);
if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) {
pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n",
dirp->d_name);
} else if (dirp->d_reclen < entrysize) {
pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n");
} else if (dirp->d_reclen < 2 * entrysize) {
proto.d_reclen = dirp->d_reclen;
memmove(dirp, &proto, (size_t)entrysize);
if (reply("FIX") == 1)
ret |= ALTERED;
} else {
n = dirp->d_reclen - entrysize;
proto.d_reclen = entrysize;
memmove(dirp, &proto, (size_t)entrysize);
idesc->id_entryno++;
inoinfo(dirp->d_ino)->ino_linkcnt--;
dirp = (struct direct *)((char *)(dirp) + entrysize);
memset(dirp, 0, (size_t)n);
dirp->d_reclen = n;
if (reply("FIX") == 1)
ret |= ALTERED;
}
chk1:
if (idesc->id_entryno > 1)
goto chk2;
inp = getinoinfo(idesc->id_number);
proto.d_ino = inp->i_parent;
proto.d_type = DT_DIR;
proto.d_namlen = 2;
(void)strcpy(proto.d_name, "..");
entrysize = DIRSIZ(0, &proto);
if (idesc->id_entryno == 0) {
n = DIRSIZ(0, dirp);
if (dirp->d_reclen < n + entrysize)
goto chk2;
proto.d_reclen = dirp->d_reclen - n;
dirp->d_reclen = n;
idesc->id_entryno++;
inoinfo(dirp->d_ino)->ino_linkcnt--;
dirp = (struct direct *)((char *)(dirp) + n);
memset(dirp, 0, (size_t)proto.d_reclen);
dirp->d_reclen = proto.d_reclen;
}
if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) {
inp->i_dotdot = dirp->d_ino;
if (dirp->d_type != DT_DIR) {
direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'");
dirp->d_type = DT_DIR;
if (reply("FIX") == 1)
ret |= ALTERED;
}
goto chk2;
}
if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) {
fileerror(inp->i_parent, idesc->id_number, "MISSING '..'");
pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n",
dirp->d_name);
inp->i_dotdot = (ino_t)-1;
} else if (dirp->d_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.d_reclen = dirp->d_reclen;
memmove(dirp, &proto, (size_t)entrysize);
if (reply("FIX") == 1)
ret |= ALTERED;
}
idesc->id_entryno++;
if (dirp->d_ino != 0)
inoinfo(dirp->d_ino)->ino_linkcnt--;
return (ret|KEEPON);
chk2:
if (dirp->d_ino == 0)
return (ret|KEEPON);
if (dirp->d_namlen <= 2 &&
dirp->d_name[0] == '.' &&
idesc->id_entryno >= 2) {
if (dirp->d_namlen == 1) {
direrror(idesc->id_number, "EXTRA '.' ENTRY");
dirp->d_ino = 0;
if (reply("FIX") == 1)
ret |= ALTERED;
return (KEEPON | ret);
}
if (dirp->d_name[1] == '.') {
direrror(idesc->id_number, "EXTRA '..' ENTRY");
dirp->d_ino = 0;
if (reply("FIX") == 1)
ret |= ALTERED;
return (KEEPON | ret);
}
}
idesc->id_entryno++;
n = 0;
if (dirp->d_ino > maxino) {
fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE");
n = reply("REMOVE");
} else if (((dirp->d_ino == WINO && dirp->d_type != DT_WHT) ||
(dirp->d_ino != WINO && dirp->d_type == DT_WHT))) {
fileerror(idesc->id_number, dirp->d_ino, "BAD WHITEOUT ENTRY");
dirp->d_ino = WINO;
dirp->d_type = DT_WHT;
if (reply("FIX") == 1)
ret |= ALTERED;
} else {
again:
switch (inoinfo(dirp->d_ino)->ino_state) {
case USTATE:
if (idesc->id_entryno <= 2)
break;
fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED");
n = reply("REMOVE");
break;
case DCLEAR:
case FCLEAR:
if (idesc->id_entryno <= 2)
break;
if (inoinfo(dirp->d_ino)->ino_state == FCLEAR)
errmsg = "DUP/BAD";
else if (!preen && !usedsoftdep)
errmsg = "ZERO LENGTH DIRECTORY";
else {
n = 1;
break;
}
fileerror(idesc->id_number, dirp->d_ino, errmsg);
if ((n = reply("REMOVE")) == 1)
break;
dp = ginode(dirp->d_ino);
inoinfo(dirp->d_ino)->ino_state =
(DIP(dp, di_mode) & IFMT) == IFDIR ? DSTATE : FSTATE;
inoinfo(dirp->d_ino)->ino_linkcnt = DIP(dp, di_nlink);
goto again;
case DSTATE:
if (inoinfo(idesc->id_number)->ino_state == DFOUND)
inoinfo(dirp->d_ino)->ino_state = DFOUND;
/* fall through */
case DFOUND:
inp = getinoinfo(dirp->d_ino);
if (inp->i_parent != 0 && idesc->id_entryno > 2) {
getpathname(pathbuf, idesc->id_number,
idesc->id_number);
getpathname(namebuf, dirp->d_ino, dirp->d_ino);
pwarn("%s%s%s %s %s\n", pathbuf,
(strcmp(pathbuf, "/") == 0 ? "" : "/"),
dirp->d_name,
"IS AN EXTRANEOUS HARD LINK TO DIRECTORY",
namebuf);
if (cursnapshot != 0)
break;
if (preen) {
printf(" (REMOVED)\n");
n = 1;
break;
}
if ((n = reply("REMOVE")) == 1)
break;
}
if (idesc->id_entryno > 2)
inp->i_parent = idesc->id_number;
/* fall through */
case FSTATE:
if (dirp->d_type != inoinfo(dirp->d_ino)->ino_type) {
fileerror(idesc->id_number, dirp->d_ino,
"BAD TYPE VALUE");
dirp->d_type = inoinfo(dirp->d_ino)->ino_type;
if (reply("FIX") == 1)
ret |= ALTERED;
}
inoinfo(dirp->d_ino)->ino_linkcnt--;
break;
default:
errx(EEXIT, "BAD STATE %d FOR INODE I=%d",
inoinfo(dirp->d_ino)->ino_state, dirp->d_ino);
}
}
if (n == 0)
return (ret|KEEPON);
dirp->d_ino = 0;
return (ret|KEEPON|ALTERED);
}
/*
* Routine to sort disk blocks.
*/
static int
blksort(const void *arg1, const void *arg2)
{
return ((*(struct inoinfo **)arg1)->i_blks[0] -
(*(struct inoinfo **)arg2)->i_blks[0]);
}
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