447 lines
12 KiB
C
447 lines
12 KiB
C
/* $NetBSD: newfs.c,v 1.7 2001/07/13 20:30:20 perseant Exp $ */
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/*-
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* Copyright (c) 1989, 1992, 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/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1989, 1992, 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[] = "@(#)newfs.c 8.5 (Berkeley) 5/24/95";
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#else
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__RCSID("$NetBSD: newfs.c,v 1.7 2001/07/13 20:30:20 perseant Exp $");
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#endif
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#endif /* not lint */
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/*
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* newfs: friendly front end to mkfs
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*/
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/disklabel.h>
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#include <sys/file.h>
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#include <sys/mount.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <ufs/ufs/dir.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/lfs/lfs.h>
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#include <disktab.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <paths.h>
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#include <util.h>
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#include "config.h"
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#include "extern.h"
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#define COMPAT /* allow non-labeled disks */
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int version = DFL_VERSION; /* what version of lfs to make */
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int Nflag = 0; /* run without writing file system */
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int fssize; /* file system size */
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int sectorsize; /* bytes/sector */
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int fsize = 0; /* fragment size */
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int bsize = 0; /* block size */
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int ibsize = 0; /* inode block size */
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int interleave = 0; /* segment interleave */
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int minfree = MINFREE; /* free space threshold */
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int minfreeseg = 0; /* free segments reserved for the cleaner */
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u_int32_t roll_id = 0; /* roll-forward id */
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u_long memleft; /* virtual memory available */
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caddr_t membase; /* start address of memory based filesystem */
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#ifdef COMPAT
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char *disktype;
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int unlabeled;
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#endif
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char device[MAXPATHLEN];
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char *progname, *special;
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static struct disklabel *getdisklabel(char *, int);
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static struct disklabel *debug_readlabel(int);
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#ifdef notdef
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static void rewritelabel(char *, int, struct disklabel *);
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#endif
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static void usage(void);
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/* CHUNKSIZE should be larger than MAXPHYS */
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#define CHUNKSIZE (1024 * 1024)
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static size_t
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auto_segsize(int fd, off_t len, int version)
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{
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off_t off, bw;
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time_t start, finish;
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char buf[CHUNKSIZE];
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long seeks;
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size_t final;
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int i;
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/* First, get sequential access bandwidth */
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time(&start);
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finish = start;
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for (off = 0; finish - start < 10; off += CHUNKSIZE) {
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if (pread(fd, buf, CHUNKSIZE, off) < 0)
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break;
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time(&finish);
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}
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/* Bandwidth = bytes / sec */
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/* printf("%ld bytes in %ld seconds\n", (long)off, (long)(finish - start)); */
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bw = off / (finish - start);
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/* Second, seek time */
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time(&start);
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finish = start; /* structure copy */
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for (seeks = 0; finish - start < 10; ) {
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off = (((double)rand()) * len) / (off_t)RAND_MAX;
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if (pread(fd, buf, dbtob(1), off) < 0)
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break;
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time(&finish);
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++seeks;
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}
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/* printf("%ld seeks in %ld seconds\n", (long)seeks, (long)(finish - start)); */
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/* Seek time in units/sec */
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seeks /= (finish - start);
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if (seeks == 0)
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seeks = 1;
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printf("bw = %ld B/s, seek time %ld ms (%ld seeks/s)\n",
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(long)bw, 1000/seeks, seeks);
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final = dbtob(btodb(4 * bw / seeks));
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if (version == 1) {
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for (i = 0; final; final >>= 1, i++)
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;
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final = 1 << i;
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}
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printf("using initial segment size %ld\n", (long)final);
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return final;
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}
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int
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main(int argc, char **argv)
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{
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int ch;
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struct partition *pp;
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struct disklabel *lp;
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struct stat st;
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int debug, force, fsi, fso, segsize, maxpartitions;
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daddr_t start;
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char *cp, *opstring;
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if ((progname = strrchr(*argv, '/')) != NULL)
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++progname;
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else
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progname = *argv;
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maxpartitions = getmaxpartitions();
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if (maxpartitions > 26)
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fatal("insane maxpartitions value %d", maxpartitions);
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opstring = "AB:b:DFf:I:i:LM:m:NO:r:s:v:";
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debug = force = segsize = start = 0;
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while ((ch = getopt(argc, argv, opstring)) != -1)
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switch(ch) {
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case 'A': /* Adaptively configure segment size */
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segsize = -1;
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break;
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case 'B': /* LFS segment size */
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if ((segsize = atoi(optarg)) < LFS_MINSEGSIZE)
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fatal("%s: bad segment size", optarg);
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break;
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case 'D':
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debug = 1;
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break;
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case 'F':
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force = 1;
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break;
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case 'I':
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interleave = atoi(optarg);
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break;
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case 'L': /* Compatibility only */
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break;
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case 'M':
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minfreeseg = atoi(optarg);
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break;
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case 'N':
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Nflag++;
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break;
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case 'O':
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start = atoi(optarg);
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break;
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#ifdef COMPAT
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case 'T':
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disktype = optarg;
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break;
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#endif
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case 'b':
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if ((bsize = atoi(optarg)) < LFS_MINBLOCKSIZE)
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fatal("%s: bad block size", optarg);
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break;
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case 'f':
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if ((fsize = atoi(optarg)) <= 0)
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fatal("%s: bad frag size", optarg);
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break;
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case 'i':
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if ((ibsize = atoi(optarg)) <= 0)
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fatal("%s: bad inode block size", optarg);
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break;
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case 'm':
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if ((minfree = atoi(optarg)) < 0 || minfree > 99)
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fatal("%s: bad free space %%\n", optarg);
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break;
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case 'r':
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if ((roll_id = strtoul(optarg, NULL, 0)) == 0)
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fatal("%s: bad roll-forward id\n", optarg);
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break;
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case 's':
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if ((fssize = atoi(optarg)) <= 0)
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fatal("%s: bad file system size", optarg);
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break;
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case 'v':
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version = atoi(optarg);
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if (version <= 0 || version > LFS_VERSION)
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fatal("%s: bad version", optarg);
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break;
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case '?':
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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 (argc != 2 && argc != 1)
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usage();
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/*
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* If the -N flag isn't specified, open the output file. If no path
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* prefix, try /dev/r%s and then /dev/%s.
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*/
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special = argv[0];
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if (strchr(special, '/') == NULL) {
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(void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV,
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special);
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if (stat(device, &st) == -1)
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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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}
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if (!Nflag) {
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fso = open(special,
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(debug ? O_CREAT : 0) | O_WRONLY, DEFFILEMODE);
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if (fso < 0)
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fatal("%s: %s", special, strerror(errno));
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} else
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fso = -1;
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/* Open the input file. */
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fsi = open(special, O_RDONLY);
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if (fsi < 0)
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fatal("%s: %s", special, strerror(errno));
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if (fstat(fsi, &st) < 0)
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fatal("%s: %s", special, strerror(errno));
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if (!debug && !S_ISCHR(st.st_mode))
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(void)printf("%s: %s: not a character-special device\n",
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progname, special);
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cp = strchr(argv[0], '\0') - 1;
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if (!debug
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&& (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1))
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&& !isdigit(*cp))))
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fatal("%s: can't figure out file system partition", argv[0]);
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#ifdef COMPAT
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if (disktype == NULL)
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disktype = argv[1];
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#endif
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if (debug)
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lp = debug_readlabel(fsi);
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else
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lp = getdisklabel(special, fsi);
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if (isdigit(*cp))
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pp = &lp->d_partitions[0];
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else
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pp = &lp->d_partitions[*cp - 'a'];
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if (pp->p_size == 0)
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fatal("%s: `%c' partition is unavailable", argv[0], *cp);
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/* If force, make the partition look like an LFS */
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if(force) {
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pp->p_fstype = FS_BSDLFS;
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/* 0 means to use defaults */
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pp->p_fsize = 0;
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pp->p_frag = 0;
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pp->p_sgs = 0;
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}
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/* Try autoconfiguring segment size, if asked to */
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if (segsize == -1)
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segsize = auto_segsize(fsi, dbtob(pp->p_size), version);
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/* If we're making a LFS, we break out here */
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exit(make_lfs(fso, lp, pp, minfree, bsize, fsize, segsize,
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minfreeseg, version, start, ibsize, interleave,
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roll_id));
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}
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#ifdef COMPAT
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char lmsg[] = "%s: can't read disk label; disk type must be specified";
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#else
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char lmsg[] = "%s: can't read disk label";
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#endif
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static struct disklabel *
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getdisklabel(char *s, int fd)
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{
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static struct disklabel lab;
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if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
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#ifdef COMPAT
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if (disktype) {
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struct disklabel *lp;
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unlabeled++;
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lp = getdiskbyname(disktype);
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if (lp == NULL)
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fatal("%s: unknown disk type", disktype);
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return (lp);
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}
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#endif
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(void)fprintf(stderr,
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"%s: ioctl (GDINFO): %s\n", progname, strerror(errno));
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fatal(lmsg, s);
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}
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return (&lab);
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}
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static struct disklabel *
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debug_readlabel(int fd)
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{
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static struct disklabel lab;
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int n;
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if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0)
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fatal("unable to read disk label: %s", strerror(errno));
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else if (n < sizeof(struct disklabel))
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fatal("short read of disklabel: %d of %ld bytes", n,
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(u_long) sizeof(struct disklabel));
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return(&lab);
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}
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#ifdef notdef
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static void
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rewritelabel(char *s, int fd, struct disklabel *lp)
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{
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#ifdef COMPAT
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if (unlabeled)
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return;
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#endif
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lp->d_checksum = 0;
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lp->d_checksum = dkcksum(lp);
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if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) {
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(void)fprintf(stderr,
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"%s: ioctl (WDINFO): %s\n", progname, strerror(errno));
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fatal("%s: can't rewrite disk label", s);
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}
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#if __vax__
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if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) {
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int i;
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int cfd;
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daddr_t alt;
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char specname[64];
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char blk[1024];
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char *cp;
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/*
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* Make name for 'c' partition.
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*/
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strcpy(specname, s);
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cp = specname + strlen(specname) - 1;
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if (!isdigit(*cp))
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*cp = 'c';
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cfd = open(specname, O_WRONLY);
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if (cfd < 0)
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fatal("%s: %s", specname, strerror(errno));
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memset(blk, 0, sizeof(blk));
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*(struct disklabel *)(blk + LABELOFFSET) = *lp;
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alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors;
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for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) {
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if (lseek(cfd, (off_t)((alt + i) * lp->d_secsize),
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SEEK_SET) == -1)
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fatal("lseek to badsector area: %s",
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strerror(errno));
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if (write(cfd, blk, lp->d_secsize) < lp->d_secsize)
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fprintf(stderr,
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"%s: alternate label %d write: %s\n",
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progname, i/2, strerror(errno));
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}
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close(cfd);
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}
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#endif /* vax */
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}
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#endif /* notdef */
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void
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usage()
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{
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fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n");
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fprintf(stderr, "where fsoptions are:\n");
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fprintf(stderr, "\t-A (autoconfigure segment size)\n");
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fprintf(stderr, "\t-B segment size in bytes\n");
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fprintf(stderr, "\t-D (debug)\n");
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fprintf(stderr,
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"\t-N (do not create file system, just print out parameters)\n");
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fprintf(stderr, "\t-O first segment offset in sectors\n");
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fprintf(stderr, "\t-b block size in bytes\n");
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fprintf(stderr, "\t-f frag size in bytes\n");
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fprintf(stderr, "\t-m minimum free space %%\n");
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fprintf(stderr, "\t-s file system size in sectors\n");
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fprintf(stderr, "\t-v version\n");
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exit(1);
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}
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