429 lines
12 KiB
C
429 lines
12 KiB
C
/* $NetBSD: newfs.c,v 1.29 2013/06/18 18:18:58 christos 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. 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\
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The Regents of the University of California. All rights reserved.");
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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 1.29 2013/06/18 18:18:58 christos 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/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 <sys/disk.h>
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#include <ufs/lfs/lfs.h>
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#include <err.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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#include "bufcache.h"
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#include "partutil.h"
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#define COMPAT /* allow non-labeled disks */
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#ifdef COMPAT
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const char lmsg[] = "%s: can't read disk label; disk type must be specified";
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#else
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const char lmsg[] = "%s: can't read disk label";
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#endif
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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; /* segments not counted in bfree total */
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int resvseg = 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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#endif
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int preen = 0; /* Coexistence with fsck_lfs */
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char device[MAXPATHLEN];
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char *progname, *special;
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extern long dev_bsize; /* device block size */
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static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *);
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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()) * (btodb(len))) / ((off_t)RAND_MAX + 1);
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if (pread(fd, buf, dbtob(1), dbtob(off)) < 0)
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err(1, "pread");
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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 version, ch;
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struct disk_geom geo;
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struct dkwedge_info dkw;
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struct stat st;
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int debug, force, fsi, fso, lfs_segsize, maxpartitions;
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uint secsize = 0;
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daddr_t start;
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const char *opstring;
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int byte_sized = 0;
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int r;
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version = DFL_VERSION; /* what version of lfs to make */
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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:r:S:s:v:";
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debug = force = lfs_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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lfs_segsize = -1;
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break;
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case 'B': /* LFS segment size */
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lfs_segsize = strsuftoi64("segment size", optarg, LFS_MINSEGSIZE, INT64_MAX, NULL);
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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 = strsuftoi64("interleave", optarg, 0, INT64_MAX, NULL);
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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 = strsuftoi64("minfreeseg", optarg, 0, INT64_MAX, NULL);
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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 = strsuftoi64("start", optarg, 0, INT64_MAX, NULL);
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break;
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case 'R':
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resvseg = strsuftoi64("resvseg", optarg, 0, INT64_MAX, NULL);
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break;
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case 'S':
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secsize = strsuftoi64("sector size", optarg, 1, INT64_MAX, NULL);
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if (secsize <= 0 || (secsize & (secsize - 1)))
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fatal("%s: bad sector size", 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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bsize = strsuftoi64("block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL);
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break;
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case 'f':
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fsize = strsuftoi64("fragment size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL);
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break;
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case 'i':
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ibsize = strsuftoi64("inode block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL);
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break;
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case 'm':
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minfree = strsuftoi64("free space %", optarg, 0, 99, NULL);
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break;
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case 'r':
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roll_id = strsuftoi64("roll-forward id", optarg, 1, UINT_MAX, NULL);
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break;
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case 's':
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fssize = strsuftoi64("file system size", optarg, 0, INT64_MAX, &byte_sized);
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break;
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case 'v':
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version = strsuftoi64("file system version", optarg, 1, LFS_VERSION, NULL);
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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, O_RDWR, DEFFILEMODE);
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if (debug && fso < 0) {
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/* Create a file of the requested size. */
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fso = open(special, O_CREAT | O_RDWR, DEFFILEMODE);
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if (fso >= 0) {
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char buf[512];
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int i;
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for (i = 0; i < fssize; i++)
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write(fso, buf, sizeof(buf));
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lseek(fso, 0, SEEK_SET);
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}
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}
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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 (!S_ISCHR(st.st_mode)) {
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if (!S_ISREG(st.st_mode)) {
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fatal("%s: neither a character special device "
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"nor a regular file", special);
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}
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(void)strcpy(dkw.dkw_ptype, DKW_PTYPE_LFS);
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if (secsize == 0)
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secsize = 512;
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dkw.dkw_size = st.st_size / secsize;
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} else {
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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 (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1)
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errx(1, lmsg, special);
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if (dkw.dkw_size == 0)
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fatal("%s: is zero sized", argv[0]);
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if (!force && strcmp(dkw.dkw_ptype, DKW_PTYPE_LFS) != 0)
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fatal("%s: is not `%s', but `%s'", argv[0],
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DKW_PTYPE_LFS, dkw.dkw_ptype);
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}
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if (secsize == 0)
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secsize = geo.dg_secsize;
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/* Make device block size available to low level routines */
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dev_bsize = secsize;
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/* From here on out fssize is in sectors */
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if (byte_sized) {
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fssize /= secsize;
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}
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/* If force, make the partition look like an LFS */
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if (force) {
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(void)strcpy(dkw.dkw_ptype, DKW_PTYPE_LFS);
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if (fssize) {
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dkw.dkw_size = fssize;
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}
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} else
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if (fssize != 0 && fssize < dkw.dkw_size)
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dkw.dkw_size = fssize;
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/* Try autoconfiguring segment size, if asked to */
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if (lfs_segsize == -1) {
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if (!S_ISCHR(st.st_mode)) {
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warnx("%s is not a character special device, ignoring -A", special);
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lfs_segsize = 0;
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} else
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lfs_segsize = auto_segsize(fsi, dkw.dkw_size / secsize,
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version);
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}
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/* If we're making a LFS, we break out here */
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r = make_lfs(fso, secsize, &dkw, minfree, bsize, fsize, lfs_segsize,
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minfreeseg, resvseg, version, start, ibsize, interleave, roll_id);
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if (debug)
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bufstats();
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exit(r);
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}
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static int64_t
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strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix)
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{
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int64_t result, r1;
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int shift = 0;
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char *ep;
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errno = 0;
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r1 = strtoll(arg, &ep, 10);
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if (ep[0] != '\0' && ep[1] != '\0')
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errx(1, "%s `%s' is not a valid number.", desc, arg);
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switch (ep[0]) {
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case '\0':
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case 's': case 'S':
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if (num_suffix != NULL)
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*num_suffix = 0;
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break;
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case 'g': case 'G':
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shift += 10;
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/* FALLTHROUGH */
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case 'm': case 'M':
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shift += 10;
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/* FALLTHROUGH */
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case 'k': case 'K':
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shift += 10;
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/* FALLTHROUGH */
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case 'b': case 'B':
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if (num_suffix != NULL)
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*num_suffix = 1;
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break;
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default:
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errx(1, "`%s' is not a valid suffix for %s.", ep, desc);
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}
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result = r1 << shift;
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if (errno == ERANGE || result >> shift != r1)
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errx(1, "%s `%s' is too large to convert.", desc, arg);
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if (result < min)
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errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").",
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desc, arg, result, min);
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if (result > max)
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errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").",
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desc, arg, result, max);
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return result;
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}
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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, "\t-M count of segments not counted in bfree\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-R count of segments reserved for the cleaner\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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