313 lines
6.9 KiB
C
313 lines
6.9 KiB
C
/* $NetBSD: utilities.c,v 1.27 2008/02/23 21:41:48 christos Exp $ */
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/*
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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. 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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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/mount.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ufs/dir.h>
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#define buf ubuf
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#define vnode uvnode
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#include <ufs/lfs/lfs.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <signal.h>
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#include "bufcache.h"
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#include "vnode.h"
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#include "lfs_user.h"
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#include "segwrite.h"
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#include "fsutil.h"
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#include "fsck.h"
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#include "extern.h"
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#include "exitvalues.h"
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long diskreads, totalreads; /* Disk cache statistics */
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extern int returntosingle;
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extern off_t locked_queue_bytes;
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int
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ftypeok(struct ufs1_dinode * dp)
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{
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switch (dp->di_mode & IFMT) {
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case IFDIR:
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case IFREG:
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case IFBLK:
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case IFCHR:
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case IFLNK:
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case IFSOCK:
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case IFIFO:
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return (1);
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default:
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if (debug)
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pwarn("bad file type 0%o\n", dp->di_mode);
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return (0);
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}
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}
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int
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reply(const char *question)
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{
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int persevere;
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char c;
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if (preen)
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err(1, "INTERNAL ERROR: GOT TO reply()");
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persevere = !strcmp(question, "CONTINUE");
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pwarn("\n");
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if (!persevere && nflag) {
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printf("%s? no\n\n", question);
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return (0);
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}
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if (yflag || (persevere && nflag)) {
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printf("%s? yes\n\n", question);
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return (1);
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}
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do {
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printf("%s? [yn] ", question);
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(void) fflush(stdout);
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c = getc(stdin);
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while (c != '\n' && getc(stdin) != '\n')
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if (feof(stdin))
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return (0);
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} while (c != 'y' && c != 'Y' && c != 'n' && c != 'N');
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printf("\n");
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if (c == 'y' || c == 'Y')
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return (1);
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return (0);
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}
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static void
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write_superblocks(void)
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{
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if (debug)
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pwarn("writing superblocks with lfs_idaddr = 0x%x\n",
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(int)fs->lfs_idaddr);
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lfs_writesuper(fs, fs->lfs_sboffs[0]);
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lfs_writesuper(fs, fs->lfs_sboffs[1]);
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fsmodified = 1;
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}
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void
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ckfini(int markclean)
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{
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if (locked_queue_bytes > 0) {
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if (preen || reply("WRITE CHANGES TO DISK") == 1) {
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if (preen == 0)
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pwarn("WRITING CHANGES TO DISK\n");
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lfs_segwrite(fs, SEGM_CKP);
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fsdirty = 0;
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fsmodified = 1;
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}
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}
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if (!nflag && (fs->lfs_pflags & LFS_PF_CLEAN) == 0) {
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fs->lfs_pflags |= LFS_PF_CLEAN;
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fsmodified = 1;
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}
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if (fsmodified && (preen || reply("UPDATE SUPERBLOCKS"))) {
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sbdirty();
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write_superblocks();
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}
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if (markclean && fsmodified) {
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/*
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* Mark the file system as clean, and sync the superblock.
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*/
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if (preen)
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pwarn("MARKING FILE SYSTEM CLEAN\n");
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else if (!reply("MARK FILE SYSTEM CLEAN"))
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markclean = 0;
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if (markclean) {
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fs->lfs_pflags |= LFS_PF_CLEAN;
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sbdirty();
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write_superblocks();
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if (!preen)
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printf(
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"\n***** FILE SYSTEM MARKED CLEAN *****\n");
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}
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}
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if (debug)
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bufstats();
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(void) close(fsreadfd);
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}
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/*
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* Free a previously allocated block
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*/
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void
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freeblk(daddr_t blkno, long frags)
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{
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struct inodesc idesc;
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idesc.id_blkno = blkno;
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idesc.id_numfrags = frags;
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(void) pass4check(&idesc);
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}
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/*
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* Find a pathname
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*/
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void
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getpathname(char *namebuf, size_t namebuflen, ino_t curdir, ino_t ino)
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{
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int len;
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char *cp;
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struct inodesc idesc;
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static int busy = 0;
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if (curdir == ino && ino == ROOTINO) {
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(void) strlcpy(namebuf, "/", namebuflen);
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return;
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}
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if (busy ||
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(statemap[curdir] != DSTATE && statemap[curdir] != DFOUND)) {
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(void) strlcpy(namebuf, "?", namebuflen);
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return;
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}
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busy = 1;
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memset(&idesc, 0, sizeof(struct inodesc));
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idesc.id_type = DATA;
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idesc.id_fix = IGNORE;
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cp = &namebuf[MAXPATHLEN - 1];
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*cp = '\0';
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if (curdir != ino) {
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idesc.id_parent = curdir;
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goto namelookup;
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}
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while (ino != ROOTINO) {
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idesc.id_number = ino;
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idesc.id_func = findino;
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idesc.id_name = "..";
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if ((ckinode(ginode(ino), &idesc) & FOUND) == 0)
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break;
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namelookup:
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idesc.id_number = idesc.id_parent;
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idesc.id_parent = ino;
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idesc.id_func = findname;
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idesc.id_name = namebuf;
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if (ginode(idesc.id_number) == NULL)
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break;
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if ((ckinode(ginode(idesc.id_number), &idesc) & FOUND) == 0)
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break;
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len = strlen(namebuf);
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cp -= len;
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memcpy(cp, namebuf, (size_t) len);
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*--cp = '/';
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if (cp < &namebuf[LFS_MAXNAMLEN])
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break;
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ino = idesc.id_number;
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}
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busy = 0;
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if (ino != ROOTINO)
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*--cp = '?';
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memcpy(namebuf, cp, (size_t) (&namebuf[MAXPATHLEN] - cp));
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}
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void
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catch(int n)
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{
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ckfini(0);
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exit(FSCK_EXIT_SIGNALLED);
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}
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/*
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* When preening, allow a single quit to signal
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* a special exit after filesystem checks complete
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* so that reboot sequence may be interrupted.
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*/
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void
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catchquit(int n)
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{
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printf("returning to single-user after filesystem check\n");
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returntosingle = 1;
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(void) signal(SIGQUIT, SIG_DFL);
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}
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/*
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* Ignore a single quit signal; wait and flush just in case.
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* Used by child processes in preen.
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*/
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void
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voidquit(int n)
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{
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sleep(1);
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(void) signal(SIGQUIT, SIG_IGN);
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(void) signal(SIGQUIT, SIG_DFL);
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}
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/*
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* determine whether an inode should be fixed.
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*/
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int
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dofix(struct inodesc * idesc, const char *msg)
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{
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switch (idesc->id_fix) {
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case DONTKNOW:
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if (idesc->id_type == DATA)
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direrror(idesc->id_number, msg);
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else
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pwarn("%s", msg);
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if (preen) {
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printf(" (SALVAGED)\n");
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idesc->id_fix = FIX;
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return (ALTERED);
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}
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if (reply("SALVAGE") == 0) {
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idesc->id_fix = NOFIX;
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return (0);
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}
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idesc->id_fix = FIX;
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return (ALTERED);
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case FIX:
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return (ALTERED);
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case NOFIX:
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case IGNORE:
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return (0);
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default:
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err(EEXIT, "UNKNOWN INODESC FIX MODE %d\n", idesc->id_fix);
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}
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/* NOTREACHED */
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}
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