NetBSD/sbin/fsck_v7fs/inode.c

161 lines
4.2 KiB
C

/* $NetBSD: inode.c,v 1.1 2011/06/27 11:52:58 uch Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: inode.c,v 1.1 2011/06/27 11:52:58 uch Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include "v7fs.h"
#include "v7fs_impl.h"
#include "v7fs_inode.h"
#include "v7fs_superblock.h"
#include "fsck_v7fs.h"
struct ilistcheck_arg {
int total;
int alloc;
};
int
freeinode_check(struct v7fs_self *fs)
{
struct v7fs_superblock *sb = &fs->superblock;
v7fs_ino_t *f = sb->freeinode;
int16_t n = sb->nfreeinode;
int16_t i, j;
int bogus = false;
/* Check # of cached free inode. */
if (n > V7FS_MAX_FREEINODE || n < 0) {
pwarn("*** corrupt nfreeinode %d (0-%d)***", n,
V7FS_MAX_FREEINODE);
if (reply("PURGE?")) {
sb->nfreeinode = 0;
sb->modified = 1;
v7fs_superblock_writeback(fs);
return FSCK_EXIT_UNRESOLVED;
}
return FSCK_EXIT_CHECK_FAILED;
}
/* Check dup. */
for (i = 0; i < n; i++)
for (j = 0; j < i; j++)
if (f[i] == f[j]) {
pwarn("*** freeinode DUP %d %d", i, j);
bogus = true;
}
if (bogus) {
if (reply("PURGE?")) {
memset(sb->freeinode, 0, sizeof(*sb->freeinode));
sb->nfreeinode = 0;
sb->modified = 1;
v7fs_superblock_writeback(fs);
return FSCK_EXIT_UNRESOLVED;
} else {
return FSCK_EXIT_CHECK_FAILED;
}
}
return FSCK_EXIT_OK;
}
/* Counting freeinode and find partialy allocated inode. */
static int
v7fs_inode_check(struct v7fs_self *fs, struct v7fs_inode *p, v7fs_ino_t ino)
{
int error = 0;
if (v7fs_inode_allocated(p) && !p->nlink) {
pwarn("*** partialy allocated inode #%d", ino);
v7fs_inode_dump(p);
if (reply_trivial("REMOVE?")) {
memset(p, 0, sizeof(*p));
v7fs_inode_deallocate(fs, ino);
} else {
error = FSCK_EXIT_CHECK_FAILED;
}
}
return error;
}
static int
ilistcheck_subr(struct v7fs_self *fs, void *ctx, struct v7fs_inode *p,
v7fs_ino_t ino)
{
struct ilistcheck_arg *arg = (struct ilistcheck_arg *)ctx;
int error = 0;
if (ino != 1)
error = v7fs_inode_check(fs, p, ino);
arg->total++;
if (v7fs_inode_allocated(p))
arg->alloc++;
return error;
}
int
ilist_check(struct v7fs_self *fs)
{
struct v7fs_superblock *sb = &fs->superblock;
struct ilistcheck_arg arg = { .total = 0, .alloc = 0 };
int error = 0;
if ((error = v7fs_ilist_foreach(fs, ilistcheck_subr, &arg)))
return error;
int nfree = arg.total - arg.alloc;
if (nfree != sb->total_freeinode) {
pwarn("*** corrupt total freeinode. %d(sb) != %d(cnt)\n",
sb->total_freeinode, nfree);
if (reply_trivial("CORRECT?")) {
sb->total_freeinode = nfree;
sb->modified = true;
v7fs_superblock_writeback(fs);
v7fs_superblock_dump(fs);
} else {
error = FSCK_EXIT_CHECK_FAILED;
}
}
pwarn("\ninode usage: %d/%d (%d)\n", arg.alloc, arg.total, nfree);
return error;
}