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Add newfs_msdos: extensive newfs-style support for creating FAT12,
FAT16, and FAT32 file systems in all their various horriblenesses. Approved-in-concept by: joerg
This commit is contained in:
Robert Nordier
parent
91ba27a769
commit
dc9ef4d1f7
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/cvs2svn/branches/RNORDIER/; revision=37446
6
sbin/newfs_msdos/Makefile
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6
sbin/newfs_msdos/Makefile
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@ -0,0 +1,6 @@
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# $Id$
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PROG= newfs_msdos
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MAN8= newfs_msdos.8
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.include <bsd.prog.mk>
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173
sbin/newfs_msdos/newfs_msdos.8
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173
sbin/newfs_msdos/newfs_msdos.8
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@ -0,0 +1,173 @@
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.\" Copyright (c) 1998 Robert Nordier
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in
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.\" the documentation and/or other materials provided with the
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.\" distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
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.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY
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.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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.\" GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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.\" IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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.\" IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $Id$
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.\"
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.Dd July 6, 1998
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.Dt NEWFS_MSDOS 8
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.Os
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.Sh NAME
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.Nm newfs_msdos
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.Nd construct a new MS-DOS (FAT) file system
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.Sh SYNOPSIS
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.Nm
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.Op Fl N
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.Op Fl B Ar boot
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.Op Fl F Ar FAT-type
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.Op Fl I Ar volid
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.Op Fl L Ar label
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.Op Fl O Ar OEM
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.Op Fl S Ar sector-size
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.Op Fl a Ar FAT-size
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.Op Fl b Ar block-size
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.Op Fl c Ar cluster-size
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.Op Fl e Ar dirents
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.Op Fl f Ar format
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.Op Fl h Ar heads
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.Op Fl i Ar info
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.Op Fl k Ar backup
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.Op Fl m Ar media
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.Op Fl n Ar FATs
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.Op Fl o Ar hidden
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.Op Fl r Ar reserved
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.Op Fl s Ar total
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.Op Fl u Ar track-size
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.Ar special
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.Op Ar disktype
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.Sh DESCRIPTION
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The
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.Nm
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utility creates a FAT12, FAT16, or FAT32 file system on device
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.Ar special ,
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using
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.Xr disktab 5
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entry
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.Ar disktype
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to determine geometry, if required.
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.Pp
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The options are as follow:
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.Bl -tag -width Fl
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.It Fl N
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Don't create a file system: just print out parameters.
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.It Fl B Ar boot
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Get bootstrap from file.
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.It Fl F Ar FAT-type
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FAT type (one of 12, 16, or 32).
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.It Fl I Ar volid
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Volume ID.
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.It Fl L Ar label
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Volume label (up to 11 characters). The label should consist of
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only those characters permitted in regular DOS (8+3) filenames.
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.It Fl O Ar OEM
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OEM string (up to 8 characters). The default is
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"BSD 4.4".
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.It Fl S Ar sector-size
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Number of bytes per sector. Acceptable values are powers of 2
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in the range 128 through 32768.
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.It Fl a Ar FAT-size
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Number of sectors per FAT.
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.It Fl b Ar block-size.
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File system block size (bytes per cluster). This should resolve to an
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acceptable number of sectors per cluster (see below).
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.It Fl c Ar cluster-size
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Sectors per cluster. Acceptable values are powers of 2 in the range
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1 through 128.
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.It Fl e Ar dirents
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Number of root directory entries (FAT12 and FAT16 only).
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.It Fl f Ar format
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Specify a standard (floppy disk) format. The eight standard formats
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are (capacities in kilobytes): 160, 180, 320, 360, 720, 1200, 1440,
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2880.
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.It Fl h Ar heads
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Number of drive heads.
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.It Fl i Ar info
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Location of the file system info sector (FAT32 only).
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A value of 0xffff signifies no info sector.
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.It Fl k Ar backup
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Location of the backup boot sector (FAT32 only). A value
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of 0xffff signifies no backup sector.
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.It Fl m Ar media
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Media descriptor (acceptable range 0xf0 to 0xff).
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.It Fl n Ar FATs
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Number of FATs. Acceptable values are 1 to 16 inclusive. The default
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is 2.
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.It Fl o Ar hidden
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Number of hidden sectors.
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.It Fl r Ar reserved
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Number of reserved sectors.
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.It Fl s Ar total
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File system size.
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.It Fl u Ar track-size
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Number of sectors per track.
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.El
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.Sh NOTES
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FAT file system parameters occupy a "Boot Sector BPB (BIOS Parameter
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Block)" in the first of the "reserved" sectors which precede the actual
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file system. For reference purposes, this structure is presented
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below.
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.Bd -literal
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struct bsbpb {
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u_int16_t bps; /* [-S] bytes per sector */
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u_int8_t spc; /* [-c] sectors per cluster */
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u_int16_t res; /* [-r] reserved sectors */
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u_int8_t nft; /* [-n] number of FATs */
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u_int16_t rde; /* [-e] root directory entries */
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u_int16_t sec; /* [-s] total sectors */
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u_int8_t mid; /* [-m] media descriptor */
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u_int16_t spf; /* [-a] sectors per FAT */
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u_int16_t spt; /* [-u] sectors per track */
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u_int16_t hds; /* [-h] drive heads */
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u_int32_t hid; /* [-o] hidden sectors */
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u_int32_t bsec; /* [-s] big total sectors */
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};
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/* FAT32 extensions */
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struct bsxbpb {
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u_int32_t bspf; /* [-a] big sectors per FAT */
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u_int16_t xflg; /* control flags */
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u_int16_t vers; /* file system version */
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u_int32_t rdcl; /* root directory start cluster */
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u_int16_t infs; /* [-i] file system info sector */
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u_int16_t bkbs; /* [-k] backup boot sector */
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};
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.Ed
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.Sh EXAMPLES
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newfs_msdos /dev/rwd0s1
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Create a file system, using default parameters, on /dev/rwd0s1.
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newfs_msdos -f 1440 -L foo fd0
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Create a standard 1.44M file system, with volume label "foo", on
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/dev/rfd0.
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.Sh SEE ALSO
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.Xr disklabel 8 ,
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.Xr disktab 5 ,
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.Xr fdisk 8 ,
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.Xr newfs 8
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.Sh DIAGNOSTICS
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Exit status is 0 on success and 1 on error.
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.Sh AUTHORS
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.An Robert Nordier Aq rnordier@FreeBSD.ORG .
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924
sbin/newfs_msdos/newfs_msdos.c
Normal file
924
sbin/newfs_msdos/newfs_msdos.c
Normal file
@ -0,0 +1,924 @@
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/*
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* Copyright (c) 1998 Robert Nordier
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
|
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
|
||||
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY
|
||||
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
|
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/diskslice.h>
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#include <sys/disklabel.h>
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#include <sys/mount.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */
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#define BPN 4 /* bits per nibble */
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#define NPB 2 /* nibbles per byte */
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#define DOSMAGIC 0xaa55 /* DOS magic number */
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#define MINBPS 128 /* minimum bytes per sector */
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#define MAXSPC 128 /* maximum sectors per cluster */
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#define MAXNFT 16 /* maximum number of FATs */
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#define DEFBLK 4096 /* default block size */
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#define DEFBLK16 2048 /* default block size FAT16 */
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#define DEFRDE 512 /* default root directory entries */
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#define RESFTE 2 /* reserved FAT entries */
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#define MINCLS12 1 /* minimum FAT12 clusters */
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#define MINCLS16 0x1000 /* minimum FAT16 clusters */
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#define MINCLS32 2 /* minimum FAT32 clusters */
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#define MAXCLS12 0xfed /* maximum FAT12 clusters */
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#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */
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#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */
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#define mincls(fat) ((fat) == 12 ? MINCLS12 : \
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(fat) == 16 ? MINCLS16 : \
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MINCLS32)
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#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \
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(fat) == 16 ? MAXCLS16 : \
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MAXCLS32)
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#define mk1(p, x) \
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(p) = (u_int8_t)(x)
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#define mk2(p, x) \
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(p)[0] = (u_int8_t)(x), \
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(p)[1] = (u_int8_t)((x) >> 010)
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#define mk4(p, x) \
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(p)[0] = (u_int8_t)(x), \
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(p)[1] = (u_int8_t)((x) >> 010), \
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(p)[2] = (u_int8_t)((x) >> 020), \
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(p)[3] = (u_int8_t)((x) >> 030)
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#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg)
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#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg)
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#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg)
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#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg)
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struct bs {
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u_int8_t jmp[3]; /* bootstrap entry point */
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u_int8_t oem[8]; /* OEM name and version */
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};
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struct bsbpb {
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u_int8_t bps[2]; /* bytes per sector */
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u_int8_t spc; /* sectors per cluster */
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u_int8_t res[2]; /* reserved sectors */
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u_int8_t nft; /* number of FATs */
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u_int8_t rde[2]; /* root directory entries */
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u_int8_t sec[2]; /* total sectors */
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u_int8_t mid; /* media descriptor */
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u_int8_t spf[2]; /* sectors per FAT */
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u_int8_t spt[2]; /* sectors per track */
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u_int8_t hds[2]; /* drive heads */
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u_int8_t hid[4]; /* hidden sectors */
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u_int8_t bsec[4]; /* big total sectors */
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};
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struct bsxbpb {
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u_int8_t bspf[4]; /* big sectors per FAT */
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u_int8_t xflg[2]; /* FAT control flags */
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u_int8_t vers[2]; /* file system version */
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u_int8_t rdcl[4]; /* root directory start cluster */
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u_int8_t infs[2]; /* file system info sector */
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u_int8_t bkbs[2]; /* backup boot sector */
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u_int8_t rsvd[12]; /* reserved */
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};
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struct bsx {
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u_int8_t drv; /* drive number */
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u_int8_t rsvd; /* reserved */
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u_int8_t sig; /* extended boot signature */
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u_int8_t volid[4]; /* volume ID number */
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u_int8_t label[11]; /* volume label */
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u_int8_t type[8]; /* file system type */
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};
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struct de {
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u_int8_t namext[11]; /* name and extension */
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u_int8_t attr; /* attributes */
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u_int8_t rsvd[10]; /* reserved */
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u_int8_t time[2]; /* creation time */
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u_int8_t date[2]; /* creation date */
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u_int8_t clus[2]; /* starting cluster */
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u_int8_t size[4]; /* size */
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};
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struct bpb {
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u_int bps; /* bytes per sector */
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u_int spc; /* sectors per cluster */
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u_int res; /* reserved sectors */
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u_int nft; /* number of FATs */
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u_int rde; /* root directory entries */
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u_int sec; /* total sectors */
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u_int mid; /* media descriptor */
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u_int spf; /* sectors per FAT */
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u_int spt; /* sectors per track */
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u_int hds; /* drive heads */
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u_int hid; /* hidden sectors */
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u_int bsec; /* big total sectors */
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u_int bspf; /* big sectors per FAT */
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u_int rdcl; /* root directory start cluster */
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u_int infs; /* file system info sector */
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u_int bkbs; /* backup boot sector */
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};
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static struct {
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const char *name;
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struct bpb bpb;
|
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} stdfmt[] = {
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{"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1}},
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{"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1}},
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||||
{"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2}},
|
||||
{"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2}},
|
||||
{"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2}},
|
||||
{"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2}},
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||||
{"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2}},
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||||
{"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2}}
|
||||
};
|
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|
||||
static u_int8_t bootcode[] = {
|
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0xfa, /* cli */
|
||||
0x31, 0xc0, /* xor ax,ax */
|
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0x8e, 0xd0, /* mov ss,ax */
|
||||
0xbc, 0x00, 0x7c, /* mov sp,7c00h */
|
||||
0xfb, /* sti */
|
||||
0x8e, 0xd8, /* mov ds,ax */
|
||||
0xe8, 0x00, 0x00, /* call $ + 3 */
|
||||
0x5e, /* pop si */
|
||||
0x83, 0xc6, 0x19, /* add si,+19h */
|
||||
0xbb, 0x07, 0x00, /* mov bx,0007h */
|
||||
0xfc, /* cld */
|
||||
0xac, /* lodsb */
|
||||
0x84, 0xc0, /* test al,al */
|
||||
0x74, 0x06, /* jz $ + 8 */
|
||||
0xb4, 0x0e, /* mov ah,0eh */
|
||||
0xcd, 0x10, /* int 10h */
|
||||
0xeb, 0xf5, /* jmp $ - 9 */
|
||||
0x30, 0xe4, /* xor ah,ah */
|
||||
0xcd, 0x16, /* int 16h */
|
||||
0xcd, 0x19, /* int 19h */
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||||
0x0d, 0x0a,
|
||||
'N', 'o', 'n', '-', 's', 'y', 's', 't',
|
||||
'e', 'm', ' ', 'd', 'i', 's', 'k',
|
||||
0x0d, 0x0a,
|
||||
'P', 'r', 'e', 's', 's', ' ', 'a', 'n',
|
||||
'y', ' ', 'k', 'e', 'y', ' ', 't', 'o',
|
||||
' ', 'r', 'e', 'b', 'o', 'o', 't',
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||||
0x0d, 0x0a,
|
||||
0
|
||||
};
|
||||
|
||||
static void check_mounted(const char *, mode_t);
|
||||
static void getstdfmt(const char *, struct bpb *);
|
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static void getdiskinfo(int, const char *, const char *, int,
|
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struct bpb *);
|
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static void print_bpb(struct bpb *);
|
||||
static u_int ckgeom(const char *, u_int, const char *);
|
||||
static u_int argtou(const char *, u_int, u_int, const char *);
|
||||
static int oklabel(const char *);
|
||||
static void mklabel(u_int8_t *, const char *);
|
||||
static void setstr(u_int8_t *, const char *, size_t);
|
||||
static void usage(void);
|
||||
|
||||
/*
|
||||
* Construct a FAT12, FAT16, or FAT32 file system.
|
||||
*/
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
static char opts[] = "NB:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:";
|
||||
static const char *opt_B, *opt_L, *opt_O, *opt_f;
|
||||
static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e;
|
||||
static u_int opt_h, opt_i, opt_k, opt_m, opt_n, opt_o, opt_r;
|
||||
static u_int opt_s, opt_u;
|
||||
static int opt_N;
|
||||
static int Iflag, mflag, oflag;
|
||||
char buf[MAXPATHLEN];
|
||||
struct stat sb;
|
||||
struct timeval tv;
|
||||
struct bpb bpb;
|
||||
struct tm *tm;
|
||||
struct bs *bs;
|
||||
struct bsbpb *bsbpb;
|
||||
struct bsxbpb *bsxbpb;
|
||||
struct bsx *bsx;
|
||||
struct de *de;
|
||||
u_int8_t *img;
|
||||
const char *fname, *dtype, *bname;
|
||||
ssize_t n;
|
||||
u_int fat, bss, rds, cls, dir, lsn, x, x1, x2;
|
||||
int ch, fd, fd1;
|
||||
|
||||
while ((ch = getopt(argc, argv, opts)) != -1)
|
||||
switch (ch) {
|
||||
case 'N':
|
||||
opt_N = 1;
|
||||
break;
|
||||
case 'B':
|
||||
opt_B = optarg;
|
||||
break;
|
||||
case 'F':
|
||||
if (strcmp(optarg, "12") &&
|
||||
strcmp(optarg, "16") &&
|
||||
strcmp(optarg, "32"))
|
||||
errx(1, "%s: bad FAT type", optarg);
|
||||
opt_F = atoi(optarg);
|
||||
break;
|
||||
case 'I':
|
||||
opt_I = argto4(optarg, 0, "volume ID");
|
||||
Iflag = 1;
|
||||
break;
|
||||
case 'L':
|
||||
if (!oklabel(optarg))
|
||||
errx(1, "%s: bad volume label", optarg);
|
||||
opt_L = optarg;
|
||||
break;
|
||||
case 'O':
|
||||
if (strlen(optarg) > 8)
|
||||
errx(1, "%s: bad OEM string", optarg);
|
||||
opt_O = optarg;
|
||||
break;
|
||||
case 'S':
|
||||
opt_S = argto2(optarg, 1, "bytes/sector");
|
||||
break;
|
||||
case 'a':
|
||||
opt_a = argto4(optarg, 1, "sectors/FAT");
|
||||
break;
|
||||
case 'b':
|
||||
opt_b = argtox(optarg, 1, "block size");
|
||||
opt_c = 0;
|
||||
break;
|
||||
case 'c':
|
||||
opt_c = argto1(optarg, 1, "sectors/cluster");
|
||||
opt_b = 0;
|
||||
break;
|
||||
case 'e':
|
||||
opt_e = argto2(optarg, 1, "directory entries");
|
||||
break;
|
||||
case 'f':
|
||||
opt_f = optarg;
|
||||
break;
|
||||
case 'h':
|
||||
opt_h = argto2(optarg, 1, "drive heads");
|
||||
break;
|
||||
case 'i':
|
||||
opt_i = argto2(optarg, 1, "info sector");
|
||||
break;
|
||||
case 'k':
|
||||
opt_k = argto2(optarg, 1, "backup sector");
|
||||
break;
|
||||
case 'm':
|
||||
opt_m = argto1(optarg, 0, "media descriptor");
|
||||
mflag = 1;
|
||||
break;
|
||||
case 'n':
|
||||
opt_n = argto1(optarg, 1, "number of FATs");
|
||||
break;
|
||||
case 'o':
|
||||
opt_o = argto4(optarg, 0, "hidden sectors");
|
||||
oflag = 1;
|
||||
break;
|
||||
case 'r':
|
||||
opt_r = argto2(optarg, 1, "reserved sectors");
|
||||
break;
|
||||
case 's':
|
||||
opt_s = argto4(optarg, 1, "file system size");
|
||||
break;
|
||||
case 'u':
|
||||
opt_u = argto2(optarg, 1, "sectors/track");
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
}
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
if (argc < 1 || argc > 2)
|
||||
usage();
|
||||
fname = *argv++;
|
||||
if (!strchr(fname, '/')) {
|
||||
snprintf(buf, sizeof(buf), "%sr%s", _PATH_DEV, fname);
|
||||
if (stat(buf, &sb))
|
||||
snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname);
|
||||
if (!(fname = strdup(buf)))
|
||||
err(1, NULL);
|
||||
}
|
||||
dtype = *argv;
|
||||
if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1 ||
|
||||
fstat(fd, &sb))
|
||||
err(1, "%s", fname);
|
||||
if (!opt_N)
|
||||
check_mounted(fname, sb.st_mode);
|
||||
if (!S_ISCHR(sb.st_mode))
|
||||
warnx("warning: %s is not a character device", fname);
|
||||
memset(&bpb, 0, sizeof(bpb));
|
||||
if (opt_f) {
|
||||
getstdfmt(opt_f, &bpb);
|
||||
bpb.bsec = bpb.sec;
|
||||
bpb.sec = 0;
|
||||
bpb.bspf = bpb.spf;
|
||||
bpb.spf = 0;
|
||||
}
|
||||
if (opt_h)
|
||||
bpb.hds = opt_h;
|
||||
if (opt_u)
|
||||
bpb.spt = opt_u;
|
||||
if (opt_S)
|
||||
bpb.bps = opt_S;
|
||||
if (opt_s)
|
||||
bpb.bsec = opt_s;
|
||||
if (oflag)
|
||||
bpb.hid = opt_o;
|
||||
if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag)))
|
||||
getdiskinfo(fd, fname, dtype, oflag, &bpb);
|
||||
if (!powerof2(bpb.bps))
|
||||
errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps);
|
||||
if (bpb.bps < MINBPS)
|
||||
errx(1, "bytes/sector (%u) is too small; minimum is %u",
|
||||
bpb.bps, MINBPS);
|
||||
if (!(fat = opt_F))
|
||||
if (opt_f)
|
||||
fat = 12;
|
||||
else if (!opt_e && (opt_i || opt_k))
|
||||
fat = 32;
|
||||
if ((fat == 32 && opt_e) || (fat != 32 && (opt_i || opt_k)))
|
||||
errx(1, "-%c is not a legal FAT%s option",
|
||||
fat == 32 ? 'e' : opt_i ? 'i' : 'k',
|
||||
fat == 32 ? "32" : "12/16");
|
||||
if (opt_f && fat == 32)
|
||||
bpb.rde = 0;
|
||||
if (opt_b) {
|
||||
if (!powerof2(opt_b))
|
||||
errx(1, "block size (%u) is not a power of 2", opt_b);
|
||||
if (opt_b < bpb.bps)
|
||||
errx(1, "block size (%u) is too small; minimum is %u",
|
||||
opt_b, bpb.bps);
|
||||
if (opt_b > bpb.bps * MAXSPC)
|
||||
errx(1, "block size (%u) is too large; maximum is %u",
|
||||
opt_b, bpb.bps * MAXSPC);
|
||||
bpb.spc = opt_b / bpb.bps;
|
||||
}
|
||||
if (opt_c) {
|
||||
if (!powerof2(opt_c))
|
||||
errx(1, "sectors/cluster (%u) is not a power of 2", opt_c);
|
||||
bpb.spc = opt_c;
|
||||
}
|
||||
if (opt_r)
|
||||
bpb.res = opt_r;
|
||||
if (opt_n) {
|
||||
if (opt_n > MAXNFT)
|
||||
errx(1, "number of FATs (%u) is too large; maximum is %u",
|
||||
opt_n, MAXNFT);
|
||||
bpb.nft = opt_n;
|
||||
}
|
||||
if (opt_e)
|
||||
bpb.rde = opt_e;
|
||||
if (mflag) {
|
||||
if (opt_m < 0xf0)
|
||||
errx(1, "illegal media descriptor (0x%x)", opt_m);
|
||||
bpb.mid = opt_m;
|
||||
}
|
||||
if (opt_a)
|
||||
bpb.bspf = opt_a;
|
||||
if (opt_i)
|
||||
bpb.infs = opt_i;
|
||||
if (opt_k)
|
||||
bpb.bkbs = opt_k;
|
||||
bss = 1;
|
||||
bname = NULL;
|
||||
fd1 = -1;
|
||||
if (opt_B) {
|
||||
bname = opt_B;
|
||||
if (!strchr(bname, '/')) {
|
||||
snprintf(buf, sizeof(buf), "/usr/mdec/%s", bname);
|
||||
if (!(bname = strdup(buf)))
|
||||
err(1, NULL);
|
||||
}
|
||||
if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb))
|
||||
err(1, "%s", bname);
|
||||
if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bps ||
|
||||
sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU16)
|
||||
errx(1, "%s: inappropriate file type or format", bname);
|
||||
bss = sb.st_size / bpb.bps;
|
||||
}
|
||||
if (!bpb.nft)
|
||||
bpb.nft = 2;
|
||||
if (!fat)
|
||||
if (bpb.bsec < (bpb.res ? bpb.res : bss) +
|
||||
howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) *
|
||||
((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB) *
|
||||
bpb.nft +
|
||||
howmany(bpb.rde ? bpb.rde : DEFRDE,
|
||||
bpb.bps / sizeof(struct de)) +
|
||||
(bpb.spc ? MINCLS16 : MAXCLS12 + 1) *
|
||||
(bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps)))
|
||||
fat = 12;
|
||||
else if (bpb.rde || bpb.bsec <
|
||||
(bpb.res ? bpb.res : bss) +
|
||||
howmany((RESFTE + MAXCLS16) * 2, bpb.bps) * bpb.nft +
|
||||
howmany(DEFRDE, bpb.bps / sizeof(struct de)) +
|
||||
(MAXCLS16 + 1) *
|
||||
(bpb.spc ? bpb.spc : howmany(8192, bpb.bps)))
|
||||
fat = 16;
|
||||
else
|
||||
fat = 32;
|
||||
x = bss;
|
||||
if (fat == 32) {
|
||||
if (!bpb.infs) {
|
||||
if (x == MAXU16 || x == bpb.bkbs)
|
||||
errx(1, "no room for info sector");
|
||||
bpb.infs = x;
|
||||
}
|
||||
if (bpb.infs != MAXU16 && x <= bpb.infs)
|
||||
x = bpb.infs + 1;
|
||||
if (!bpb.bkbs) {
|
||||
if (x == MAXU16)
|
||||
errx(1, "no room for backup sector");
|
||||
bpb.bkbs = x;
|
||||
} else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs)
|
||||
errx(1, "backup sector would overwrite info sector");
|
||||
if (bpb.bkbs != MAXU16 && x <= bpb.bkbs)
|
||||
x = bpb.bkbs + 1;
|
||||
}
|
||||
if (!bpb.res)
|
||||
bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x;
|
||||
else if (bpb.res < x)
|
||||
errx(1, "too few reserved sectors");
|
||||
if (fat != 32 && !bpb.rde)
|
||||
bpb.rde = DEFRDE;
|
||||
rds = howmany(bpb.rde, bpb.bps / sizeof(struct de));
|
||||
if (!bpb.spc)
|
||||
for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps);
|
||||
bpb.spc < MAXSPC &&
|
||||
bpb.res +
|
||||
howmany((RESFTE + maxcls(fat)) * (fat / BPN),
|
||||
bpb.bps * NPB) * bpb.nft +
|
||||
rds +
|
||||
(u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec;
|
||||
bpb.spc <<= 1);
|
||||
if (fat != 32 && bpb.bspf > MAXU16)
|
||||
errx(1, "too many sectors/FAT for FAT12/16");
|
||||
x1 = bpb.res + rds;
|
||||
x = bpb.bspf ? bpb.bspf : 1;
|
||||
if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec)
|
||||
errx(1, "meta data exceeds file system size");
|
||||
x1 += x * bpb.nft;
|
||||
x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB /
|
||||
(bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft);
|
||||
x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN),
|
||||
bpb.bps * NPB);
|
||||
if (!bpb.bspf) {
|
||||
bpb.bspf = x2;
|
||||
x1 += (bpb.bspf - 1) * bpb.nft;
|
||||
}
|
||||
cls = (bpb.bsec - x1) / bpb.spc;
|
||||
x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE;
|
||||
if (cls > x)
|
||||
cls = x;
|
||||
if (bpb.bspf < x2)
|
||||
warnx("warning: sectors/FAT limits file system to %u clusters",
|
||||
cls);
|
||||
if (cls < mincls(fat))
|
||||
errx(1, "too few clusters for FAT%u", fat);
|
||||
if (cls > maxcls(fat)) {
|
||||
cls = maxcls(fat);
|
||||
bpb.bsec = x1 + (cls + 1) * bpb.spc - 1;
|
||||
warnx("warning: FAT type limits file system to %u sectors",
|
||||
bpb.bsec);
|
||||
}
|
||||
printf("%s: %u sector%s in %u FAT%u cluster%s "
|
||||
"(%u bytes/cluster)\n", fname, cls * bpb.spc,
|
||||
cls * bpb.spc == 1 ? "" : "s", cls, fat,
|
||||
cls == 1 ? "" : "s", bpb.bps * bpb.spc);
|
||||
if (!bpb.mid)
|
||||
bpb.mid = !bpb.hid ? 0xf0 : 0xf8;
|
||||
if (fat == 32)
|
||||
bpb.rdcl = RESFTE;
|
||||
if (bpb.bsec <= MAXU16 && bpb.hid <= MAXU16 &&
|
||||
bpb.hid + bpb.bsec <= MAXU16) {
|
||||
bpb.sec = bpb.bsec;
|
||||
bpb.bsec = 0;
|
||||
}
|
||||
if (fat != 32) {
|
||||
bpb.spf = bpb.bspf;
|
||||
bpb.bspf = 0;
|
||||
}
|
||||
print_bpb(&bpb);
|
||||
if (!opt_N) {
|
||||
gettimeofday(&tv, NULL);
|
||||
tm = localtime(&tv.tv_sec);
|
||||
if (!(img = malloc(bpb.bps)))
|
||||
err(1, NULL);
|
||||
dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft;
|
||||
for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) {
|
||||
x = lsn;
|
||||
if (opt_B &&
|
||||
fat == 32 && bpb.bkbs != MAXU16 &&
|
||||
bss <= bpb.bkbs && x >= bpb.bkbs) {
|
||||
x -= bpb.bkbs;
|
||||
if (!x && lseek(fd1, 0, SEEK_SET))
|
||||
err(1, "%s", bname);
|
||||
}
|
||||
if (opt_B && x < bss) {
|
||||
if ((n = read(fd1, img, bpb.bps)) == -1)
|
||||
err(1, "%s", bname);
|
||||
if (n != bpb.bps)
|
||||
errx(1, "%s: can't read sector %u", bname, x);
|
||||
} else
|
||||
memset(img, 0, bpb.bps);
|
||||
if (!lsn ||
|
||||
(fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) {
|
||||
x1 = sizeof(struct bs);
|
||||
bsbpb = (struct bsbpb *)(img + x1);
|
||||
mk2(bsbpb->bps, bpb.bps);
|
||||
mk1(bsbpb->spc, bpb.spc);
|
||||
mk2(bsbpb->res, bpb.res);
|
||||
mk1(bsbpb->nft, bpb.nft);
|
||||
mk2(bsbpb->rde, bpb.rde);
|
||||
mk2(bsbpb->sec, bpb.sec);
|
||||
mk1(bsbpb->mid, bpb.mid);
|
||||
mk2(bsbpb->spf, bpb.spf);
|
||||
mk2(bsbpb->spt, bpb.spt);
|
||||
mk2(bsbpb->hds, bpb.hds);
|
||||
mk4(bsbpb->hid, bpb.hid);
|
||||
mk4(bsbpb->bsec, bpb.bsec);
|
||||
x1 += sizeof(struct bsbpb);
|
||||
if (fat == 32) {
|
||||
bsxbpb = (struct bsxbpb *)(img + x1);
|
||||
mk4(bsxbpb->bspf, bpb.bspf);
|
||||
mk2(bsxbpb->xflg, 0);
|
||||
mk2(bsxbpb->vers, 0);
|
||||
mk4(bsxbpb->rdcl, bpb.rdcl);
|
||||
mk2(bsxbpb->infs, bpb.infs);
|
||||
mk2(bsxbpb->bkbs, bpb.bkbs);
|
||||
x1 += sizeof(struct bsxbpb);
|
||||
}
|
||||
bsx = (struct bsx *)(img + x1);
|
||||
mk1(bsx->sig, 0x29);
|
||||
if (Iflag)
|
||||
x = opt_I;
|
||||
else
|
||||
x = (((u_int)(1 + tm->tm_mon) << 8 |
|
||||
(u_int)tm->tm_mday) +
|
||||
((u_int)tm->tm_sec << 8 |
|
||||
(u_int)(tv.tv_usec / 10))) << 16 |
|
||||
((u_int)(1900 + tm->tm_year) +
|
||||
((u_int)tm->tm_hour << 8 |
|
||||
(u_int)tm->tm_min));
|
||||
mk4(bsx->volid, x);
|
||||
mklabel(bsx->label, opt_L ? opt_L : "NO NAME");
|
||||
sprintf(buf, "FAT%u", fat);
|
||||
setstr(bsx->type, buf, sizeof(bsx->type));
|
||||
if (!opt_B) {
|
||||
x1 += sizeof(struct bsx);
|
||||
bs = (struct bs *)img;
|
||||
mk1(bs->jmp[0], 0xeb);
|
||||
mk1(bs->jmp[1], x1 - 2);
|
||||
mk1(bs->jmp[2], 0x90);
|
||||
setstr(bs->oem, opt_O ? opt_O : "BSD 4.4",
|
||||
sizeof(bs->oem));
|
||||
memcpy(img + x1, bootcode, sizeof(bootcode));
|
||||
mk2(img + bpb.bps - 2, DOSMAGIC);
|
||||
}
|
||||
} else if (fat == 32 && bpb.infs != MAXU16 &&
|
||||
(lsn == bpb.infs ||
|
||||
(bpb.bkbs != MAXU16 &&
|
||||
lsn == bpb.bkbs + bpb.infs))) {
|
||||
mk4(img, 0x41615252);
|
||||
mk4(img + bpb.bps - 28, 0x61417272);
|
||||
mk4(img + bpb.bps - 24, 0xffffffff);
|
||||
mk4(img + bpb.bps - 20, 2);
|
||||
mk2(img + bpb.bps - 2, DOSMAGIC);
|
||||
} else if (lsn >= bpb.res && lsn < dir &&
|
||||
!((lsn - bpb.res) %
|
||||
(bpb.spf ? bpb.spf : bpb.bspf))) {
|
||||
mk1(img[0], bpb.mid);
|
||||
for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++)
|
||||
mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff);
|
||||
} else if (lsn == dir && opt_L) {
|
||||
de = (struct de *) img;
|
||||
mklabel(de->namext, opt_L);
|
||||
mk1(de->attr, 050);
|
||||
x = (u_int)tm->tm_hour << 11 |
|
||||
(u_int)tm->tm_min << 5 |
|
||||
(u_int)tm->tm_sec >> 1;
|
||||
mk2(de->time, x);
|
||||
x = (u_int)(tm->tm_year - 80) << 9 |
|
||||
(u_int)(tm->tm_mon + 1) << 5 |
|
||||
(u_int)tm->tm_mday;
|
||||
mk2(de->date, x);
|
||||
}
|
||||
if ((n = write(fd, img, bpb.bps)) == -1)
|
||||
err(1, "%s", fname);
|
||||
if (n != bpb.bps)
|
||||
errx(1, "%s: can't write sector %u", fname, lsn);
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Exit with error if file system is mounted.
|
||||
*/
|
||||
static void
|
||||
check_mounted(const char *fname, mode_t mode)
|
||||
{
|
||||
struct statfs *mp;
|
||||
const char *s1, *s2;
|
||||
size_t len;
|
||||
int n, r;
|
||||
|
||||
if (!(n = getmntinfo(&mp, MNT_NOWAIT)))
|
||||
err(1, "getmntinfo");
|
||||
len = strlen(_PATH_DEV);
|
||||
s1 = fname;
|
||||
if (!strncmp(s1, _PATH_DEV, len))
|
||||
s1 += len;
|
||||
r = S_ISCHR(mode) && s1 != fname && *s1 == 'r';
|
||||
for (; n--; mp++) {
|
||||
s2 = mp->f_mntfromname;
|
||||
if (!strncmp(s2, _PATH_DEV, len))
|
||||
s2 += len;
|
||||
if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) ||
|
||||
!strcmp(s1, s2))
|
||||
errx(1, "%s is mounted on %s", fname, mp->f_mntonname);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Get a standard format.
|
||||
*/
|
||||
static void
|
||||
getstdfmt(const char *fmt, struct bpb *bpb)
|
||||
{
|
||||
u_int x, i;
|
||||
|
||||
x = sizeof(stdfmt) / sizeof(stdfmt[0]);
|
||||
for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++);
|
||||
if (i == x)
|
||||
errx(1, "%s: unknown standard format", fmt);
|
||||
*bpb = stdfmt[i].bpb;
|
||||
}
|
||||
|
||||
/*
|
||||
* Get disk slice, partition, and geometry information.
|
||||
*/
|
||||
static void
|
||||
getdiskinfo(int fd, const char *fname, const char *dtype, int oflag,
|
||||
struct bpb *bpb)
|
||||
{
|
||||
struct diskslices ds;
|
||||
struct disklabel dl, *lp;
|
||||
const char *s1, *s2;
|
||||
char *s;
|
||||
int slice, part, fd1, i, e;
|
||||
|
||||
slice = part = -1;
|
||||
s1 = fname;
|
||||
if ((s2 = strrchr(s1, '/')))
|
||||
s1 = s2 + 1;
|
||||
for (s2 = s1; *s2 && !isdigit(*s2); s2++);
|
||||
if (!*s2 || s2 == s1)
|
||||
s2 = NULL;
|
||||
else
|
||||
while (isdigit(*++s2));
|
||||
s1 = s2;
|
||||
if (s2 && *s2 == 's') {
|
||||
slice = (int)strtol(s2 + 1, &s, 10);
|
||||
if (slice < 1 || slice > MAX_SLICES - BASE_SLICE)
|
||||
s2 = NULL;
|
||||
else {
|
||||
slice = BASE_SLICE + slice - 1;
|
||||
s2 = s;
|
||||
}
|
||||
}
|
||||
if (s2 && *s2 >= 'a' && *s2 <= 'a' + MAXPARTITIONS - 1) {
|
||||
if (slice == -1)
|
||||
slice = COMPATIBILITY_SLICE;
|
||||
part = *s2++ - 'a';
|
||||
}
|
||||
if (!s2 || (*s2 && *s2 != '.'))
|
||||
errx(1, "%s: can't figure out partition info", fname);
|
||||
if (slice != -1 && (!oflag || (!bpb->bsec && part == -1))) {
|
||||
if (ioctl(fd, DIOCGSLICEINFO, &ds) == -1) {
|
||||
warn("ioctl (GSLICEINFO)");
|
||||
errx(1, "%s: can't get slice info", fname);
|
||||
}
|
||||
if (slice >= ds.dss_nslices || !ds.dss_slices[slice].ds_size)
|
||||
errx(1, "%s: slice is unavailable", fname);
|
||||
if (!oflag)
|
||||
bpb->hid = (u_int32_t)ds.dss_slices[slice].ds_offset;
|
||||
if (!bpb->bsec && part == -1)
|
||||
bpb->bsec = (u_int32_t)ds.dss_slices[slice].ds_size;
|
||||
}
|
||||
if (((slice == -1 || part != -1) &&
|
||||
((!oflag && part != -1) || !bpb->bsec)) ||
|
||||
!bpb->bps || !bpb->spt || !bpb->hds) {
|
||||
lp = &dl;
|
||||
i = ioctl(fd, DIOCGDINFO, lp);
|
||||
if (i == -1 && slice != -1 && part == -1) {
|
||||
e = errno;
|
||||
if (!(s = strdup(fname)))
|
||||
err(1, NULL);
|
||||
s[s1 - fname] = 0;
|
||||
if ((fd1 = open(s, O_RDONLY)) != -1) {
|
||||
i = ioctl(fd1, DIOCGDINFO, lp);
|
||||
close(fd1);
|
||||
}
|
||||
free(s);
|
||||
errno = e;
|
||||
}
|
||||
if (i == -1)
|
||||
if (!dtype) {
|
||||
warn("ioctl (GDINFO)");
|
||||
errx(1, "%s: can't read disk label; "
|
||||
"disk type must be specified", fname);
|
||||
} else if (!(lp = getdiskbyname(dtype)))
|
||||
errx(1, "%s: unknown disk type", dtype);
|
||||
if (slice == -1 || part != -1) {
|
||||
if (part == -1)
|
||||
part = RAW_PART;
|
||||
if (part >= lp->d_npartitions ||
|
||||
!lp->d_partitions[part].p_size)
|
||||
errx(1, "%s: partition is unavailable", fname);
|
||||
if (!oflag && part != -1)
|
||||
bpb->hid += lp->d_partitions[part].p_offset;
|
||||
if (!bpb->bsec)
|
||||
bpb->bsec = lp->d_partitions[part].p_size;
|
||||
}
|
||||
if (!bpb->bps)
|
||||
bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector");
|
||||
if (!bpb->spt)
|
||||
bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track");
|
||||
if (!bpb->hds)
|
||||
bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads");
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Print out BPB values.
|
||||
*/
|
||||
static void
|
||||
print_bpb(struct bpb *bpb)
|
||||
{
|
||||
printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res,
|
||||
bpb->nft);
|
||||
if (bpb->rde)
|
||||
printf(" rde=%u", bpb->rde);
|
||||
if (bpb->sec)
|
||||
printf(" sec=%u", bpb->sec);
|
||||
printf(" mid=0x%x", bpb->mid);
|
||||
if (bpb->spf)
|
||||
printf(" spf=%u", bpb->spf);
|
||||
printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid);
|
||||
if (bpb->bsec)
|
||||
printf(" bsec=%u", bpb->bsec);
|
||||
if (!bpb->spf) {
|
||||
printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl);
|
||||
printf(" infs=");
|
||||
printf(bpb->infs == MAXU16 ? "0x%x" : "%u", bpb->infs);
|
||||
printf(" bkbs=");
|
||||
printf(bpb->bkbs == MAXU16 ? "0x%x" : "%u", bpb->bkbs);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
/*
|
||||
* Check a disk geometry value.
|
||||
*/
|
||||
static u_int
|
||||
ckgeom(const char *fname, u_int val, const char *msg)
|
||||
{
|
||||
if (!val)
|
||||
errx(1, "%s: no default %s", fname, msg);
|
||||
if (val > MAXU16)
|
||||
errx(1, "%s: illegal %s", fname, msg);
|
||||
return val;
|
||||
}
|
||||
|
||||
/*
|
||||
* Convert and check a numeric option argument.
|
||||
*/
|
||||
static u_int
|
||||
argtou(const char *arg, u_int lo, u_int hi, const char *msg)
|
||||
{
|
||||
char *s;
|
||||
u_long x;
|
||||
|
||||
errno = 0;
|
||||
x = strtoul(arg, &s, 0);
|
||||
if (errno || !*arg || *s || x < lo || x > hi)
|
||||
errx(1, "%s: bad %s", arg, msg);
|
||||
return x;
|
||||
}
|
||||
|
||||
/*
|
||||
* Check a volume label.
|
||||
*/
|
||||
static int
|
||||
oklabel(const char *src)
|
||||
{
|
||||
int c, i;
|
||||
|
||||
for (i = 0; i <= 11; i++) {
|
||||
c = (u_char)*src++;
|
||||
if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c))
|
||||
break;
|
||||
}
|
||||
return i && !c;
|
||||
}
|
||||
|
||||
/*
|
||||
* Make a volume label.
|
||||
*/
|
||||
static void
|
||||
mklabel(u_int8_t *dest, const char *src)
|
||||
{
|
||||
int c, i;
|
||||
|
||||
for (i = 0; i < 11; i++) {
|
||||
c = *src ? toupper(*src++) : ' ';
|
||||
*dest++ = !i && c == '\xe5' ? 5 : c;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Copy string, padding with spaces.
|
||||
*/
|
||||
static void
|
||||
setstr(u_int8_t *dest, const char *src, size_t len)
|
||||
{
|
||||
while (len--)
|
||||
*dest++ = *src ? *src++ : ' ';
|
||||
}
|
||||
|
||||
/*
|
||||
* Print usage message.
|
||||
*/
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
fprintf(stderr,
|
||||
"usage: newfs_msdos [ -options ] special [disktype]\n");
|
||||
fprintf(stderr, "where the options are:\n");
|
||||
fprintf(stderr, "\t-N don't create file system: "
|
||||
"just print out parameters\n");
|
||||
fprintf(stderr, "\t-B get bootstrap from file\n");
|
||||
fprintf(stderr, "\t-F FAT type (12, 16, or 32)\n");
|
||||
fprintf(stderr, "\t-I volume ID\n");
|
||||
fprintf(stderr, "\t-L volume label\n");
|
||||
fprintf(stderr, "\t-O OEM string\n");
|
||||
fprintf(stderr, "\t-S bytes/sector\n");
|
||||
fprintf(stderr, "\t-a sectors/FAT\n");
|
||||
fprintf(stderr, "\t-b block size\n");
|
||||
fprintf(stderr, "\t-c sectors/cluster\n");
|
||||
fprintf(stderr, "\t-e root directory entries\n");
|
||||
fprintf(stderr, "\t-f standard format\n");
|
||||
fprintf(stderr, "\t-h drive heads\n");
|
||||
fprintf(stderr, "\t-i file system info sector\n");
|
||||
fprintf(stderr, "\t-k backup boot sector\n");
|
||||
fprintf(stderr, "\t-m media descriptor\n");
|
||||
fprintf(stderr, "\t-n number of FATs\n");
|
||||
fprintf(stderr, "\t-o hidden sectors\n");
|
||||
fprintf(stderr, "\t-r reserved sectors\n");
|
||||
fprintf(stderr, "\t-s file system size (sectors)\n");
|
||||
fprintf(stderr, "\t-u sectors/track\n");
|
||||
exit(1);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user