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5cc52631b3
making fsck_ffs(8) run faster, there should be no functional change. The original fsck_ffs(8) had its own disk I/O management system. When gjournal(8) was added to FreeBSD 7, code was added to fsck_ffs(8) to do the necessary gjournal rollback. Rather than use the existing fsck_ffs(8) disk I/O system, it wrote its own from scratch. Similarly when journalled soft updates were added in FreeBSD 9, code was added to fsck_ffs(8) to do the necessary journal rollback. And once again, rather than using either of the existing fsck_ffs(8) disk I/O systems, it wrote its own from scratch. Lastly the fsdb(8) utility uses the fsck_ffs(8) disk I/O management system. In preparation for making the changes necessary to enable snapshots to be taken when using journalled soft updates, it was necessary to have a single disk I/O system used by all the various subsystems in fsck_ffs(8). This commit merges the functionality required by all the different subsystems into a single disk I/O system that supports all of their needs. In so doing it picks up optimizations from each of them with the results that each of the subsystems does fewer reads and writes than it did with its own customized I/O system. It also greatly simplifies making changes to fsck_ffs(8) since everything goes through a single place. For example the ginode() function fetches an inode from the disk. When inode check hashes were added, they previously had to be checked in the code implementing inode fetch in each of the three different disk I/O systems. Now they need only be checked in ginode(). Tested by: Peter Holm Sponsored by: Netflix
66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
/* $NetBSD: fsdb.h,v 1.2 1995/10/08 23:18:11 thorpej Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1995 John T. Kohl
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* 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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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* $FreeBSD$
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*/
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extern int blread(int fd, char *buf, ufs2_daddr_t blk, long size);
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extern void rwerror(const char *mesg, ufs2_daddr_t blk);
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extern int reply(const char *question);
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extern long dev_bsize;
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extern long secsize;
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extern int fsmodified;
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extern int fsfd;
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struct cmdtable {
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const char *cmd;
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const char *helptxt;
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unsigned int minargc;
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unsigned int maxargc;
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unsigned int flags;
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#define FL_RO 0x0000 /* for symmetry */
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#define FL_WR 0x0001 /* wants to write */
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#define FL_ST 0x0002 /* resplit final string if argc > maxargc */
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int (*handler)(int argc, char *argv[]);
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};
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extern struct inode curip;
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extern union dinode *curinode;
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extern ino_t curinum;
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int argcount(struct cmdtable *cmdp, int argc, char *argv[]);
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char **crack(char *line, int *argc);
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char **recrack(char *line, int *argc, int argc_max);
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void printstat(const char *cp, ino_t inum, union dinode *dp);
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int printactive(int doblocks);
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int checkactive(void);
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int checkactivedir(void);
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