ada981b228
the old 8-bit fs_old_flags to the new location the first time that the filesystem is mounted by a new kernel. One of the unused flags in fs_old_flags is used to indicate that the flags have been moved. Leave the fs_old_flags word intact so that it will work properly if used on an old kernel. Change the fs_sblockloc superblock location field to be in units of bytes instead of in units of filesystem fragments. The old units did not work properly when the fragment size exceeeded the superblock size (8192). Update old fs_sblockloc values at the same time that the flags are moved. Suggested by: BOUWSMA Barry <freebsd-misuser@netscum.dyndns.dk> Sponsored by: DARPA & NAI Labs.
501 lines
13 KiB
C
501 lines
13 KiB
C
/*
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* Copyright (c) 1983, 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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1983, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)tunefs.c 8.2 (Berkeley) 4/19/94";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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/*
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* tunefs: change layout parameters to an existing file system.
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*/
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/disklabel.h>
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#include <sys/stat.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <err.h>
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#include <fcntl.h>
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#include <fstab.h>
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#include <paths.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 <unistd.h>
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/* the optimization warning string template */
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#define OPTWARN "should optimize for %s with minfree %s %d%%"
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union {
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struct fs sb;
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char pad[MAXBSIZE];
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} sbun;
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#define sblock sbun.sb
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int fi;
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long dev_bsize = 1;
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void bwrite(ufs2_daddr_t, const char *, int);
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int bread(ufs2_daddr_t, char *, int);
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void getsb(struct fs *, const char *);
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void putsb(struct fs *, const char *, int);
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void usage(void);
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void printfs(void);
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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char *special;
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const char *name;
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struct stat st;
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int Aflag = 0, active = 0, aflag = 0;
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int eflag = 0, fflag = 0, lflag = 0, mflag = 0;
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int nflag = 0, oflag = 0, pflag = 0, sflag = 0;
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int evalue = 0, fvalue = 0;
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int mvalue = 0, ovalue = 0, svalue = 0;
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char *avalue = NULL, *lvalue = NULL, *nvalue = NULL;
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struct fstab *fs;
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const char *chg[2];
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char device[MAXPATHLEN];
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struct ufs_args args;
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struct statfs stfs;
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int found_arg, ch;
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if (argc < 3)
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usage();
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found_arg = 0; /* at least one arg is required */
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while ((ch = getopt(argc, argv, "Aa:e:f:l:m:n:o:ps:")) != -1)
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switch (ch) {
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case 'A':
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found_arg = 1;
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Aflag++;
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break;
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case 'a':
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found_arg = 1;
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name = "ACLs";
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avalue = optarg;
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if (strcmp(avalue, "enable") && strcmp(avalue, "disable")) {
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errx(10, "bad %s (options are %s)", name,
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"`enable' or `disable'");
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}
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aflag = 1;
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break;
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case 'e':
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found_arg = 1;
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name = "maximum blocks per file in a cylinder group";
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evalue = atoi(optarg);
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if (evalue < 1)
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errx(10, "%s must be >= 1 (was %s)", name, optarg);
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eflag = 1;
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break;
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case 'f':
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found_arg = 1;
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name = "average file size";
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fvalue = atoi(optarg);
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if (fvalue < 1)
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errx(10, "%s must be >= 1 (was %s)", name, optarg);
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fflag = 1;
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break;
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case 'l':
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found_arg = 1;
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name = "multilabel MAC file system";
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lvalue = optarg;
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if (strcmp(lvalue, "enable") && strcmp(lvalue, "disable")) {
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errx(10, "bad %s (options are %s)", name,
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"`enable' or `disable'");
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}
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lflag = 1;
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break;
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case 'm':
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found_arg = 1;
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name = "minimum percentage of free space";
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mvalue = atoi(optarg);
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if (mvalue < 0 || mvalue > 99)
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errx(10, "bad %s (%s)", name, optarg);
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mflag = 1;
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break;
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case 'n':
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found_arg = 1;
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name = "soft updates";
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nvalue = optarg;
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if (strcmp(nvalue, "enable") && strcmp(nvalue, "disable")) {
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errx(10, "bad %s (options are %s)",
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name, "`enable' or `disable'");
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}
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nflag = 1;
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break;
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case 'o':
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found_arg = 1;
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name = "optimization preference";
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chg[FS_OPTSPACE] = "space";
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chg[FS_OPTTIME] = "time";
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if (strcmp(optarg, chg[FS_OPTSPACE]) == 0)
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ovalue = FS_OPTSPACE;
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else if (strcmp(optarg, chg[FS_OPTTIME]) == 0)
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ovalue = FS_OPTTIME;
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else
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errx(10, "bad %s (options are `space' or `time')",
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name);
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oflag = 1;
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break;
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case 'p':
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found_arg = 1;
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pflag = 1;
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break;
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case 's':
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found_arg = 1;
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name = "expected number of files per directory";
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svalue = atoi(optarg);
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if (svalue < 1)
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errx(10, "%s must be >= 1 (was %s)", name, optarg);
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sflag = 1;
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break;
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (found_arg == 0 || argc != 1)
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usage();
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special = argv[0];
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fs = getfsfile(special);
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if (fs) {
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if (statfs(special, &stfs) == 0 &&
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strcmp(special, stfs.f_mntonname) == 0) {
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active = 1;
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}
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special = fs->fs_spec;
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}
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again:
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if (stat(special, &st) < 0) {
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if (*special != '/') {
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if (*special == 'r')
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special++;
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(void)snprintf(device, sizeof(device), "%s%s",
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_PATH_DEV, special);
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special = device;
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goto again;
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}
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err(1, "%s", special);
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}
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if (fs == NULL && (st.st_mode & S_IFMT) == S_IFDIR)
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errx(10, "%s: unknown file system", special);
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getsb(&sblock, special);
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if (pflag) {
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printfs();
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exit(0);
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}
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if (aflag) {
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name = "ACLs";
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if (strcmp(avalue, "enable") == 0) {
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if (sblock.fs_flags & FS_ACLS) {
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warnx("%s remains unchanged as enabled", name);
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} else {
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sblock.fs_flags |= FS_ACLS;
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warnx("%s set", name);
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}
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} else if (strcmp(avalue, "disable") == 0) {
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if ((~sblock.fs_flags & FS_ACLS) ==
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FS_ACLS) {
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warnx("%s remains unchanged as disabled",
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name);
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} else {
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sblock.fs_flags &= ~FS_ACLS;
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warnx("%s cleared", name);
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}
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}
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}
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if (eflag) {
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name = "maximum blocks per file in a cylinder group";
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if (sblock.fs_maxbpg == evalue) {
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warnx("%s remains unchanged as %d", name, evalue);
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}
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else {
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warnx("%s changes from %d to %d",
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name, sblock.fs_maxbpg, evalue);
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sblock.fs_maxbpg = evalue;
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}
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}
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if (fflag) {
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name = "average file size";
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if (sblock.fs_avgfilesize == fvalue) {
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warnx("%s remains unchanged as %d", name, fvalue);
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}
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else {
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warnx("%s changes from %d to %d",
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name, sblock.fs_avgfilesize, fvalue);
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sblock.fs_avgfilesize = fvalue;
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}
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}
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if (lflag) {
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name = "multilabel";
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if (strcmp(lvalue, "enable") == 0) {
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if (sblock.fs_flags & FS_MULTILABEL) {
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warnx("%s remains unchanged as enabled", name);
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} else {
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sblock.fs_flags |= FS_MULTILABEL;
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warnx("%s set", name);
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}
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} else if (strcmp(lvalue, "disable") == 0) {
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if ((~sblock.fs_flags & FS_MULTILABEL) ==
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FS_MULTILABEL) {
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warnx("%s remains unchanged as disabled",
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name);
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} else {
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sblock.fs_flags &= ~FS_MULTILABEL;
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warnx("%s cleared", name);
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}
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}
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}
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if (mflag) {
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name = "minimum percentage of free space";
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if (sblock.fs_minfree == mvalue) {
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warnx("%s remains unchanged as %d%%", name, mvalue);
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}
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else {
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warnx("%s changes from %d%% to %d%%",
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name, sblock.fs_minfree, mvalue);
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sblock.fs_minfree = mvalue;
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if (mvalue >= MINFREE && sblock.fs_optim == FS_OPTSPACE)
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warnx(OPTWARN, "time", ">=", MINFREE);
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if (mvalue < MINFREE && sblock.fs_optim == FS_OPTTIME)
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warnx(OPTWARN, "space", "<", MINFREE);
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}
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}
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if (nflag) {
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name = "soft updates";
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if (strcmp(nvalue, "enable") == 0) {
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if (sblock.fs_flags & FS_DOSOFTDEP) {
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warnx("%s remains unchanged as enabled", name);
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} else if (sblock.fs_clean == 0) {
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warnx("%s cannot be enabled until fsck is run",
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name);
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} else {
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sblock.fs_flags |= FS_DOSOFTDEP;
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warnx("%s set", name);
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}
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} else if (strcmp(nvalue, "disable") == 0) {
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if ((~sblock.fs_flags & FS_DOSOFTDEP) == FS_DOSOFTDEP) {
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warnx("%s remains unchanged as disabled", name);
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} else {
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sblock.fs_flags &= ~FS_DOSOFTDEP;
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warnx("%s cleared", name);
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}
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}
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}
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if (oflag) {
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name = "optimization preference";
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chg[FS_OPTSPACE] = "space";
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chg[FS_OPTTIME] = "time";
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if (sblock.fs_optim == ovalue) {
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warnx("%s remains unchanged as %s", name, chg[ovalue]);
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}
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else {
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warnx("%s changes from %s to %s",
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name, chg[sblock.fs_optim], chg[ovalue]);
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sblock.fs_optim = ovalue;
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if (sblock.fs_minfree >= MINFREE &&
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ovalue == FS_OPTSPACE)
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warnx(OPTWARN, "time", ">=", MINFREE);
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if (sblock.fs_minfree < MINFREE &&
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ovalue == FS_OPTTIME)
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warnx(OPTWARN, "space", "<", MINFREE);
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}
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}
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if (sflag) {
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name = "expected number of files per directory";
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if (sblock.fs_avgfpdir == svalue) {
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warnx("%s remains unchanged as %d", name, svalue);
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}
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else {
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warnx("%s changes from %d to %d",
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name, sblock.fs_avgfpdir, svalue);
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sblock.fs_avgfpdir = svalue;
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}
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}
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putsb(&sblock, special, Aflag);
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if (active) {
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bzero(&args, sizeof(args));
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if (mount("ufs", fs->fs_file,
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stfs.f_flags | MNT_UPDATE | MNT_RELOAD, &args) < 0)
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err(9, "%s: reload", special);
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warnx("file system reloaded");
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}
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exit(0);
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}
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void
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usage()
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{
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fprintf(stderr, "%s\n%s\n%s\n",
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"usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]",
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" [-l enable | disable] [-m minfree] [-n enable | disable]",
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" [-o space | time] [-p] [-s avgfpdir] special | filesystem");
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exit(2);
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}
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/*
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* Possible superblock locations ordered from most to least likely.
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*/
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static int sblock_try[] = SBLOCKSEARCH;
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static ufs2_daddr_t sblockloc;
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void
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getsb(fs, file)
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struct fs *fs;
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const char *file;
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{
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int i;
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fi = open(file, O_RDONLY);
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if (fi < 0)
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err(3, "cannot open %s", file);
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for (i = 0; sblock_try[i] != -1; i++) {
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if (bread(sblock_try[i], (char *)fs, SBLOCKSIZE))
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err(4, "%s: bad super block", file);
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if ((fs->fs_magic == FS_UFS1_MAGIC ||
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(fs->fs_magic == FS_UFS2_MAGIC &&
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fs->fs_sblockloc == sblock_try[i])) &&
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fs->fs_bsize <= MAXBSIZE &&
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fs->fs_bsize >= sizeof(struct fs))
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break;
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}
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if (sblock_try[i] == -1)
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err(5, "Cannot find file system superblock");
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dev_bsize = fs->fs_fsize / fsbtodb(fs, 1);
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sblockloc = sblock_try[i] / dev_bsize;
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}
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void
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putsb(fs, file, all)
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struct fs *fs;
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const char *file;
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int all;
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{
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int i;
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/*
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* Re-open the device read-write. Use the read-only file
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* descriptor as an interlock to prevent the device from
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* being mounted while we are switching mode.
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*/
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i = fi;
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fi = open(file, O_RDWR);
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close(i);
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if (fi < 0)
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err(3, "cannot open %s", file);
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bwrite(sblockloc, (const char *)fs, SBLOCKSIZE);
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if (all)
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for (i = 0; i < fs->fs_ncg; i++)
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bwrite(fsbtodb(fs, cgsblock(fs, i)),
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(const char *)fs, SBLOCKSIZE);
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close(fi);
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}
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void
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printfs()
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{
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warnx("ACLs: (-a) %s",
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(sblock.fs_flags & FS_ACLS)? "enabled" : "disabled");
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warnx("MAC multilabel: (-l) %s",
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(sblock.fs_flags & FS_MULTILABEL)? "enabled" : "disabled");
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warnx("soft updates: (-n) %s",
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(sblock.fs_flags & FS_DOSOFTDEP)? "enabled" : "disabled");
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warnx("maximum blocks per file in a cylinder group: (-e) %d",
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sblock.fs_maxbpg);
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warnx("average file size: (-f) %d",
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sblock.fs_avgfilesize);
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warnx("average number of files in a directory: (-s) %d",
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sblock.fs_avgfpdir);
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warnx("minimum percentage of free space: (-m) %d%%",
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sblock.fs_minfree);
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warnx("optimization preference: (-o) %s",
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sblock.fs_optim == FS_OPTSPACE ? "space" : "time");
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if (sblock.fs_minfree >= MINFREE &&
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sblock.fs_optim == FS_OPTSPACE)
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warnx(OPTWARN, "time", ">=", MINFREE);
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if (sblock.fs_minfree < MINFREE &&
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sblock.fs_optim == FS_OPTTIME)
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warnx(OPTWARN, "space", "<", MINFREE);
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}
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void
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bwrite(blk, buf, size)
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ufs2_daddr_t blk;
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const char *buf;
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int size;
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{
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if (lseek(fi, (off_t)blk * dev_bsize, SEEK_SET) < 0)
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err(6, "FS SEEK");
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if (write(fi, buf, size) != size)
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err(7, "FS WRITE");
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}
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int
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bread(bno, buf, cnt)
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ufs2_daddr_t bno;
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char *buf;
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int cnt;
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{
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int i;
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if (lseek(fi, (off_t)bno * dev_bsize, SEEK_SET) < 0)
|
|
return(1);
|
|
if ((i = read(fi, buf, cnt)) != cnt) {
|
|
for(i=0; i<sblock.fs_bsize; i++)
|
|
buf[i] = 0;
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|