264 lines
6.3 KiB
C
264 lines
6.3 KiB
C
/* $NetBSD: main.c,v 1.1 2011/06/27 11:52:58 uch Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by UCHIYAMA Yasushi.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: main.c,v 1.1 2011/06/27 11:52:58 uch Exp $");
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#endif /* not lint */
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <err.h>
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#include <time.h>
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#include "v7fs.h"
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#include "v7fs_impl.h"
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#include "v7fs_superblock.h"
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#include "v7fs_inode.h"
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#include "v7fs_file.h"
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#include "fsck_v7fs.h"
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#include "progress.h"
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static int check_filesystem(struct v7fs_self *, int);
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static int make_lost_and_found(struct v7fs_self *, struct v7fs_inode *);
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struct v7fs_inode lost_and_found;
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int
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v7fs_fsck(const struct v7fs_mount_device *mount, int flags)
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{
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struct v7fs_self *fs;
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int error;
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if ((error = v7fs_io_init(&fs, mount, V7FS_BSIZE))) {
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pfatal("I/O setup failed");
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return FSCK_EXIT_CHECK_FAILED;
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}
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if ((error = v7fs_superblock_load(fs))) {
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if ((error != EINVAL)) {
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pfatal("Can't load superblock");
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return FSCK_EXIT_CHECK_FAILED;
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}
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pwarn("Inavalid superblock");
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if (!reply_trivial("CONTINUE?")) {
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return FSCK_EXIT_CHECK_FAILED;
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}
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}
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error = check_filesystem(fs, flags);
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printf("write backing...(no progress report)"); fflush(stdout);
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v7fs_io_fini(fs);
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printf("done.\n");
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return error;
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}
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int
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check_filesystem(struct v7fs_self *fs, int flags)
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{
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int error;
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/* Check superblock cached freeinode list. */
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pwarn("[Superblock information]\n");
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v7fs_superblock_dump(fs);
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pwarn("[1] checking free inode in superblock...\n");
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if ((error = freeinode_check(fs)))
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return error;
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/* Check free block linked list. */
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pwarn("[2] checking free block link...\n");
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if ((error = freeblock_check(fs)))
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return error;
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/* Check inode all. */
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pwarn("[3] checking all ilist...\n");
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if ((error = ilist_check(fs)))
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return error;
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/* Setup lost+found. */
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pwarn("prepare lost+found\n");
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if ((error = make_lost_and_found(fs, &lost_and_found)))
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return FSCK_EXIT_CHECK_FAILED;
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/* Check path(child and parent). Orphans are linked to lost+found. */
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pwarn("[4] checking path name...\n");
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if ((error = pathname_check(fs)))
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return error;
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if (flags & V7FS_FSCK_FREEBLOCK_DUP) {
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/* Check duplicated block in freeblock. */
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pwarn("[5] checking freeblock duplication...\n");
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if ((error = freeblock_vs_freeblock_check(fs)))
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return error;
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}
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if (flags & V7FS_FSCK_DATABLOCK_DUP) {
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/* Check duplicated block in datablock. */
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pwarn("[6] checking datablock duplication(vs datablock)...\n");
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if ((error = datablock_vs_datablock_check(fs)))
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return error;
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}
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if ((flags & V7FS_FSCK_DATABLOCK_DUP) && (flags &
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V7FS_FSCK_FREEBLOCK_DUP)) {
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/* Check off-diagonal. */
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pwarn("[7] checking datablock duplication (vs freeblock)...\n");
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if ((error = datablock_vs_freeblock_check(fs)))
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return error;
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}
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return 0;
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}
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static int
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reply_subr(const char *str, bool trivial)
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{
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int c;
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char *line = NULL;
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size_t linesize = 0;
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ssize_t linelen;
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printf("%s ", str);
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switch (fsck_operate) {
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case PREEN:
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return trivial;
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case ALWAYS_YES:
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printf("[Y]\n");
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return 1;
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case ALWAYS_NO:
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if (strstr(str, "CONTINUE")) {
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printf("[Y]\n");
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return 1;
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}
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printf("[N]\n");
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return 0;
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case ASK:
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break;
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}
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fflush(stdout);
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if ((linelen = getline(&line, &linesize, stdin)) == -1) {
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clearerr(stdin);
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return 0;
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}
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c = line[0];
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return c == 'y' || c == 'Y';
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}
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int
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reply(const char *str)
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{
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return reply_subr(str, false);
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}
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int
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reply_trivial(const char *str)
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{
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return reply_subr(str, true);
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}
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void
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progress(const struct progress_arg *p)
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{
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static struct progress_arg Progress;
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static char cdev[32];
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static char label[32];
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if (p) {
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if (Progress.tick) {
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progress_done();
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}
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Progress = *p;
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if (p->cdev)
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strcpy(cdev, p->cdev);
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if (p->label)
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strcpy(label, p->label);
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}
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if (fsck_operate == PREEN)
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return;
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if (!Progress.tick)
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return;
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if (++Progress.cnt > Progress.tick) {
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Progress.cnt = 0;
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Progress.total++;
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progress_bar(cdev, label, Progress.total, PROGRESS_BAR_GRANULE);
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}
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}
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int
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make_lost_and_found(struct v7fs_self *fs, struct v7fs_inode *p)
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{
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struct v7fs_inode root_inode;
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struct v7fs_fileattr attr;
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v7fs_ino_t ino;
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int error = 0;
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if ((error = v7fs_inode_load(fs, &root_inode, V7FS_ROOT_INODE))) {
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errno = error;
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warn("(%s) / missing.", __func__);
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return error;
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}
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memset(&attr, 0, sizeof(attr));
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attr.uid = 0;
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attr.gid = 0;
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attr.mode = V7FS_IFDIR | 0755;
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attr.device = 0;
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attr.ctime = attr.mtime = attr.atime = (v7fs_time_t)time(NULL);
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/* If lost+found already exists, returns EEXIST */
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if (!(error = v7fs_file_allocate
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(fs, &root_inode, "lost+found", &attr, &ino)))
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v7fs_superblock_writeback(fs);
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if (error == EEXIST)
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error = 0;
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if (error) {
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errno = error;
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warn("(%s) Couldn't create lost+found", __func__);
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return error;
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}
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if ((error = v7fs_inode_load(fs, p, ino))) {
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errno = error;
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warn("(%s:)lost+found is created, but missing.", __func__);
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}
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return error;
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}
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