42614ed3f3
64 bit block pointers, extended attribute storage, and a few other things. This commit does not yet include the code to manipulate the extended storage (for e.g. ACLs), this will be done later. Originally written by Kirk McKusick and Network Associates Laboratories for FreeBSD.
310 lines
6.8 KiB
C
310 lines
6.8 KiB
C
/* $NetBSD: utilities.c,v 1.13 2003/04/02 10:39:28 fvdl 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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.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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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(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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printf("\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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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 ((fs->lfs_flags & LFS_PF_CLEAN) == 0)
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fsmodified = 1;
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fs->lfs_pflags |= LFS_PF_CLEAN;
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if (fsmodified && (preen || reply("UPDATE STANDARD SUPERBLOCK"))) {
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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, ino_t curdir, ino_t ino)
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{
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int len;
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register 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) strcpy(namebuf, "/");
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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) strcpy(namebuf, "?");
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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 ((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[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(12);
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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, 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(8, "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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