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e7bf085313
in a couple of cases, and it doesn't do much anyway. It used to save only the newfs params (block/frag/cgroup.. and nothing more. Something that don't belong in a disklabel in the first place.
657 lines
18 KiB
C
657 lines
18 KiB
C
/*
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* Copyright (c) 1983, 1989, 1993, 1994
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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 char sccsid[] = "@(#)newfs.c 8.8 (Berkeley) 4/18/94";
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#endif /* not lint */
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1983, 1989, 1993, 1994\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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/*
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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/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 <ufs/ufs/dir.h>
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#include <ufs/ffs/fs.h>
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#include <ctype.h>
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#include <errno.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 <syslog.h>
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#include <unistd.h>
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#if __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include "mntopts.h"
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struct mntopt mopts[] = {
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MOPT_STDOPTS,
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MOPT_ASYNC,
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{ NULL },
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};
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#if __STDC__
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void fatal(const char *fmt, ...);
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#else
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void fatal();
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#endif
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#define COMPAT /* allow non-labeled disks */
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/*
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* The following two constants set the default block and fragment sizes.
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* Both constants must be a power of 2 and meet the following constraints:
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* MINBSIZE <= DESBLKSIZE <= MAXBSIZE
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* sectorsize <= DESFRAGSIZE <= DESBLKSIZE
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* DESBLKSIZE / DESFRAGSIZE <= 8
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*/
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#define DFL_FRAGSIZE 1024
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#define DFL_BLKSIZE 8192
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/*
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* Cylinder groups may have up to many cylinders. The actual
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* number used depends upon how much information can be stored
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* on a single cylinder. The default is to use 16 cylinders
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* per group.
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*/
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#define DESCPG 16 /* desired fs_cpg */
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/*
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* Once upon a time...
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* ROTDELAY gives the minimum number of milliseconds to initiate
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* another disk transfer on the same cylinder. It is used in
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* determining the rotationally optimal layout for disk blocks
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* within a file; the default of fs_rotdelay is 4ms.
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*
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* ...but now we make this 0 to disable the rotdelay delay because
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* modern drives with read/write-behind achieve higher performance
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* without the delay.
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*/
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#define ROTDELAY 0
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/*
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* MAXBLKPG determines the maximum number of data blocks which are
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* placed in a single cylinder group. The default is one indirect
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* block worth of data blocks.
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*/
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#define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t))
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/*
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* Each file system has a number of inodes statically allocated.
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* We allocate one inode slot per NFPI fragments, expecting this
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* to be far more than we will ever need.
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*/
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#define NFPI 4
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/*
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* Once upon a time...
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* For each cylinder we keep track of the availability of blocks at different
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* rotational positions, so that we can lay out the data to be picked
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* up with minimum rotational latency. NRPOS is the default number of
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* rotational positions that we distinguish. With NRPOS of 8 the resolution
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* of our summary information is 2ms for a typical 3600 rpm drive.
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*
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* ...but now we make this 1 (which escentially disables the rotational
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* position table because modern drives with read-ahead and write-behind do
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* better without the rotational position table.
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*/
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#define NRPOS 1 /* number distinct rotational positions */
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/*
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* About the same time as the above, we knew what went where on the disks.
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* no longer so, so kill the code which finds the different platters too...
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* We do this by saying one head, with a lot of sectors on it.
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* The number of sectors are used to determine the size of a cyl-group.
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* Kirk suggested one or two meg per "cylinder" so we say two.
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*/
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#define NTRACKS 1 /* number of heads */
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#define NSECTORS 4096 /* number of sectors */
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int mfs; /* run as the memory based filesystem */
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int Nflag; /* run without writing file system */
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int Oflag; /* format as an 4.3BSD file system */
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int fssize; /* file system size */
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int ntracks = NTRACKS; /* # tracks/cylinder */
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int nsectors = NSECTORS; /* # sectors/track */
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int nphyssectors; /* # sectors/track including spares */
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int secpercyl; /* sectors per cylinder */
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int trackspares = -1; /* spare sectors per track */
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int cylspares = -1; /* spare sectors per cylinder */
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int sectorsize; /* bytes/sector */
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#ifdef tahoe
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int realsectorsize; /* bytes/sector in hardware */
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#endif
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int rpm; /* revolutions/minute of drive */
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int interleave; /* hardware sector interleave */
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int trackskew = -1; /* sector 0 skew, per track */
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int headswitch; /* head switch time, usec */
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int trackseek; /* track-to-track seek, usec */
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int fsize = 0; /* fragment size */
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int bsize = 0; /* block size */
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int cpg = DESCPG; /* cylinders/cylinder group */
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int cpgflg; /* cylinders/cylinder group flag was given */
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int minfree = MINFREE; /* free space threshold */
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int opt = DEFAULTOPT; /* optimization preference (space or time) */
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int density; /* number of bytes per inode */
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int maxcontig = 0; /* max contiguous blocks to allocate */
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int rotdelay = ROTDELAY; /* rotational delay between blocks */
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int maxbpg; /* maximum blocks per file in a cyl group */
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int nrpos = NRPOS; /* # of distinguished rotational positions */
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int bbsize = BBSIZE; /* boot block size */
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int sbsize = SBSIZE; /* superblock size */
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int mntflags = MNT_ASYNC; /* flags to be passed to mount */
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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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char *filename;
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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;
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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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extern char *optarg;
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extern int optind;
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register int ch;
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register struct partition *pp;
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register struct disklabel *lp;
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struct disklabel *getdisklabel();
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struct partition oldpartition;
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struct stat st;
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struct statfs *mp;
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int fsi, fso, len, n;
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char *cp, *s1, *s2, *special, *opstring, buf[BUFSIZ];
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if (progname = rindex(*argv, '/'))
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++progname;
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else
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progname = *argv;
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if (strstr(progname, "mfs")) {
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mfs = 1;
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Nflag++;
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}
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opstring = mfs ?
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"NF:T:a:b:c:d:e:f:i:m:o:s:" :
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"NOS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:";
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while ((ch = getopt(argc, argv, opstring)) != EOF)
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switch (ch) {
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case 'N':
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Nflag = 1;
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break;
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case 'O':
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Oflag = 1;
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break;
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case 'S':
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if ((sectorsize = atoi(optarg)) <= 0)
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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 'F':
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filename = optarg;
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break;
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case 'a':
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if ((maxcontig = atoi(optarg)) <= 0)
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fatal("%s: bad maximum contiguous blocks\n",
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optarg);
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break;
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case 'b':
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if ((bsize = atoi(optarg)) < MINBSIZE)
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fatal("%s: bad block size", optarg);
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break;
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case 'c':
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if ((cpg = atoi(optarg)) <= 0)
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fatal("%s: bad cylinders/group", optarg);
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cpgflg++;
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break;
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case 'd':
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if ((rotdelay = atoi(optarg)) < 0)
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fatal("%s: bad rotational delay\n", optarg);
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break;
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case 'e':
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if ((maxbpg = atoi(optarg)) <= 0)
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fatal("%s: bad blocks per file in a cylinder group\n",
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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 fragment size", optarg);
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break;
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case 'i':
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if ((density = atoi(optarg)) <= 0)
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fatal("%s: bad bytes per inode\n", optarg);
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break;
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case 'k':
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if ((trackskew = atoi(optarg)) < 0)
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fatal("%s: bad track skew", optarg);
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break;
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case 'l':
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if ((interleave = atoi(optarg)) <= 0)
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fatal("%s: bad interleave", 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 'n':
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if ((nrpos = atoi(optarg)) < 0)
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fatal("%s: bad rotational layout count\n",
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optarg);
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if (nrpos == 0)
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nrpos = 1;
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break;
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case 'o':
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if (mfs)
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getmntopts(optarg, mopts, &mntflags, 0);
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else {
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if (strcmp(optarg, "space") == 0)
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opt = FS_OPTSPACE;
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else if (strcmp(optarg, "time") == 0)
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opt = FS_OPTTIME;
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else
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fatal("%s: unknown optimization preference: use `space' or `time'.");
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}
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break;
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case 'p':
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if ((trackspares = atoi(optarg)) < 0)
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fatal("%s: bad spare sectors per track",
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optarg);
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break;
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case 'r':
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if ((rpm = atoi(optarg)) <= 0)
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fatal("%s: bad revolutions/minute\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 't':
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if ((ntracks = atoi(optarg)) < 0)
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fatal("%s: bad total tracks", optarg);
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break;
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case 'u':
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if ((nsectors = atoi(optarg)) < 0)
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fatal("%s: bad sectors/track", optarg);
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break;
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case 'x':
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if ((cylspares = atoi(optarg)) < 0)
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fatal("%s: bad spare sectors per cylinder",
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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 && (mfs || argc != 1))
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usage();
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special = argv[0];
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cp = rindex(special, '/');
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if (cp == 0) {
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/*
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* No path prefix; try /dev/r%s then /dev/%s.
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*/
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(void)sprintf(device, "%sr%s", _PATH_DEV, special);
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if (stat(device, &st) == -1)
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(void)sprintf(device, "%s%s", _PATH_DEV, special);
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special = device;
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}
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if (Nflag) {
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fso = -1;
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} else {
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fso = open(special, O_WRONLY);
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if (fso < 0)
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fatal("%s: %s", special, strerror(errno));
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/* Bail if target special is mounted */
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n = getmntinfo(&mp, MNT_NOWAIT);
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if (n == 0)
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fatal("%s: getmntinfo: %s", special, strerror(errno));
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len = sizeof(_PATH_DEV) - 1;
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s1 = special;
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if (strncmp(_PATH_DEV, s1, len) == 0)
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s1 += len;
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while (--n >= 0) {
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s2 = mp->f_mntfromname;
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if (strncmp(_PATH_DEV, s2, len) == 0) {
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s2 += len - 1;
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*s2 = 'r';
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}
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if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0)
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fatal("%s is mounted on %s",
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special, mp->f_mntonname);
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++mp;
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}
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}
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if (mfs && disktype != NULL) {
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lp = (struct disklabel *)getdiskbyname(disktype);
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if (lp == NULL)
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fatal("%s: unknown disk type", disktype);
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pp = &lp->d_partitions[1];
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} else {
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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 ((st.st_mode & S_IFMT) != S_IFCHR && !mfs)
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printf("%s: %s: not a character-special device\n",
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progname, special);
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cp = index(argv[0], '\0') - 1;
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if (cp == 0 || (*cp < 'a' || *cp > 'h') && !isdigit(*cp))
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fatal("%s: can't figure out file system partition",
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argv[0]);
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#ifdef COMPAT
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if (!mfs && disktype == NULL)
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disktype = argv[1];
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#endif
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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",
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argv[0], *cp);
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if (pp->p_fstype == FS_BOOT)
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fatal("%s: `%c' partition overlaps boot program",
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argv[0], *cp);
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}
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if (fssize == 0)
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fssize = pp->p_size;
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if (fssize > pp->p_size && !mfs)
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fatal("%s: maximum file system size on the `%c' partition is %d",
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argv[0], *cp, pp->p_size);
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if (rpm == 0) {
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rpm = lp->d_rpm;
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if (rpm <= 0)
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rpm = 3600;
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}
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if (ntracks == 0) {
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ntracks = lp->d_ntracks;
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if (ntracks <= 0)
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fatal("%s: no default #tracks", argv[0]);
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}
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if (nsectors == 0) {
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nsectors = lp->d_nsectors;
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if (nsectors <= 0)
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fatal("%s: no default #sectors/track", argv[0]);
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}
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if (sectorsize == 0) {
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sectorsize = lp->d_secsize;
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if (sectorsize <= 0)
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fatal("%s: no default sector size", argv[0]);
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}
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if (trackskew == -1) {
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trackskew = lp->d_trackskew;
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if (trackskew < 0)
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trackskew = 0;
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}
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if (interleave == 0) {
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interleave = lp->d_interleave;
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if (interleave <= 0)
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interleave = 1;
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}
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if (fsize == 0) {
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fsize = pp->p_fsize;
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if (fsize <= 0)
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fsize = MAX(DFL_FRAGSIZE, lp->d_secsize);
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}
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if (bsize == 0) {
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bsize = pp->p_frag * pp->p_fsize;
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if (bsize <= 0)
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bsize = MIN(DFL_BLKSIZE, 8 * fsize);
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}
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/*
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* Maxcontig sets the default for the maximum number of blocks
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* that may be allocated sequentially. With filesystem clustering
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* it is possible to allocate contiguous blocks up to the maximum
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* transfer size permitted by the controller or buffering.
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*/
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if (maxcontig == 0)
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maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize - 1);
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if (density == 0)
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density = NFPI * fsize;
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if (minfree < MINFREE && opt != FS_OPTSPACE) {
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fprintf(stderr, "Warning: changing optimization to space ");
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fprintf(stderr, "because minfree is less than %d%%\n", MINFREE);
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opt = FS_OPTSPACE;
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}
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if (trackspares == -1) {
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trackspares = lp->d_sparespertrack;
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if (trackspares < 0)
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trackspares = 0;
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}
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nphyssectors = nsectors + trackspares;
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if (cylspares == -1) {
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cylspares = lp->d_sparespercyl;
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if (cylspares < 0)
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cylspares = 0;
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}
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secpercyl = nsectors * ntracks - cylspares;
|
|
if (secpercyl != lp->d_secpercyl)
|
|
fprintf(stderr, "%s (%d) %s (%lu)\n",
|
|
"Warning: calculated sectors per cylinder", secpercyl,
|
|
"disagrees with disk label", lp->d_secpercyl);
|
|
if (maxbpg == 0)
|
|
maxbpg = MAXBLKPG(bsize);
|
|
headswitch = lp->d_headswitch;
|
|
trackseek = lp->d_trkseek;
|
|
#ifdef notdef /* label may be 0 if faked up by kernel */
|
|
bbsize = lp->d_bbsize;
|
|
sbsize = lp->d_sbsize;
|
|
#endif
|
|
oldpartition = *pp;
|
|
#ifdef tahoe
|
|
realsectorsize = sectorsize;
|
|
if (sectorsize != DEV_BSIZE) { /* XXX */
|
|
int secperblk = DEV_BSIZE / sectorsize;
|
|
|
|
sectorsize = DEV_BSIZE;
|
|
nsectors /= secperblk;
|
|
nphyssectors /= secperblk;
|
|
secpercyl /= secperblk;
|
|
fssize /= secperblk;
|
|
pp->p_size /= secperblk;
|
|
}
|
|
#endif
|
|
mkfs(pp, special, fsi, fso);
|
|
#ifdef tahoe
|
|
if (realsectorsize != DEV_BSIZE)
|
|
pp->p_size *= DEV_BSIZE / realsectorsize;
|
|
#endif
|
|
if (!Nflag)
|
|
close(fso);
|
|
close(fsi);
|
|
#ifdef MFS
|
|
if (mfs) {
|
|
struct mfs_args args;
|
|
|
|
sprintf(buf, "mfs:%d", getpid());
|
|
args.fspec = buf;
|
|
args.export.ex_root = -2;
|
|
if (mntflags & MNT_RDONLY)
|
|
args.export.ex_flags = MNT_EXRDONLY;
|
|
else
|
|
args.export.ex_flags = 0;
|
|
args.base = membase;
|
|
args.size = fssize * sectorsize;
|
|
if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0)
|
|
fatal("%s: %s", argv[1], strerror(errno));
|
|
if(filename) {
|
|
munmap(membase,fssize * sectorsize);
|
|
}
|
|
}
|
|
#endif
|
|
exit(0);
|
|
}
|
|
|
|
#ifdef COMPAT
|
|
char lmsg[] = "%s: can't read disk label; disk type must be specified";
|
|
#else
|
|
char lmsg[] = "%s: can't read disk label";
|
|
#endif
|
|
|
|
struct disklabel *
|
|
getdisklabel(s, fd)
|
|
char *s;
|
|
int fd;
|
|
{
|
|
static struct disklabel lab;
|
|
|
|
if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) {
|
|
#ifdef COMPAT
|
|
if (disktype) {
|
|
struct disklabel *lp, *getdiskbyname();
|
|
|
|
unlabeled++;
|
|
lp = getdiskbyname(disktype);
|
|
if (lp == NULL)
|
|
fatal("%s: unknown disk type", disktype);
|
|
return (lp);
|
|
}
|
|
#endif
|
|
warn("ioctl (GDINFO)");
|
|
fatal(lmsg, s);
|
|
}
|
|
return (&lab);
|
|
}
|
|
|
|
/*VARARGS*/
|
|
void
|
|
#if __STDC__
|
|
fatal(const char *fmt, ...)
|
|
#else
|
|
fatal(fmt, va_alist)
|
|
char *fmt;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
va_list ap;
|
|
|
|
#if __STDC__
|
|
va_start(ap, fmt);
|
|
#else
|
|
va_start(ap);
|
|
#endif
|
|
if (fcntl(STDERR_FILENO, F_GETFL) < 0) {
|
|
openlog(progname, LOG_CONS, LOG_DAEMON);
|
|
vsyslog(LOG_ERR, fmt, ap);
|
|
closelog();
|
|
} else {
|
|
vwarnx(fmt, ap);
|
|
}
|
|
va_end(ap);
|
|
exit(1);
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
usage()
|
|
{
|
|
if (mfs) {
|
|
fprintf(stderr,
|
|
"usage: %s [ -fsoptions ] special-device mount-point\n",
|
|
progname);
|
|
} else
|
|
fprintf(stderr,
|
|
"usage: %s [ -fsoptions ] special-device%s\n",
|
|
progname,
|
|
#ifdef COMPAT
|
|
" [device-type]");
|
|
#else
|
|
"");
|
|
#endif
|
|
fprintf(stderr, "where fsoptions are:\n");
|
|
fprintf(stderr,
|
|
"\t-N do not create file system, just print out parameters\n");
|
|
fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n");
|
|
fprintf(stderr, "\t-S sector size\n");
|
|
#ifdef COMPAT
|
|
fprintf(stderr, "\t-T disktype\n");
|
|
#endif
|
|
fprintf(stderr, "\t-a maximum contiguous blocks\n");
|
|
fprintf(stderr, "\t-b block size\n");
|
|
fprintf(stderr, "\t-c cylinders/group\n");
|
|
fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
|
|
fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
|
|
fprintf(stderr, "\t-f frag size\n");
|
|
fprintf(stderr, "\t-i number of bytes per inode\n");
|
|
fprintf(stderr, "\t-k sector 0 skew, per track\n");
|
|
fprintf(stderr, "\t-l hardware sector interleave\n");
|
|
fprintf(stderr, "\t-m minimum free space %%\n");
|
|
fprintf(stderr, "\t-n number of distinguished rotational positions\n");
|
|
fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
|
|
fprintf(stderr, "\t-p spare sectors per track\n");
|
|
fprintf(stderr, "\t-s file system size (sectors)\n");
|
|
fprintf(stderr, "\t-r revolutions/minute\n");
|
|
fprintf(stderr, "\t-t tracks/cylinder\n");
|
|
fprintf(stderr, "\t-u sectors/track\n");
|
|
fprintf(stderr, "\t-x spare sectors per cylinder\n");
|
|
exit(1);
|
|
}
|