Add a dumb but BSD-licensed newfs_ext2fs(8) command.
This is based on the newfs(8) command for ffs, but most ext2fs specific part is written from scratch. Tested on alpha, cobalt, i386 and sgimips with some disks and vnd(4), and at least cobalt's firmware can load boot files from an ext2fs E2FS_REV0 partition created by this native newfs_ext2fs(8) command. Closes PR bin/16175.
This commit is contained in:
tsutsui
parent
4b2334142b
commit
f8b02b9cdf
16
sbin/newfs_ext2fs/Makefile
Normal file
16
sbin/newfs_ext2fs/Makefile
Normal file
@ -0,0 +1,16 @@
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# $NetBSD: Makefile,v 1.1 2007/11/17 16:50:25 tsutsui Exp $
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# @(#)Makefile 8.2 (Berkeley) 3/27/94
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.include <bsd.own.mk>
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PROG= newfs_ext2fs
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SRCS= newfs_ext2fs.c mke2fs.c ext2fs_bswap.c partutil.c
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MAN= newfs_ext2fs.8
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FSCK=${NETBSDSRCDIR}/sbin/fsck
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CPPFLAGS+=-I${.CURDIR} -I${FSCK}
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DPADD+= ${LIBUTIL}
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LDADD+= -lutil
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.PATH: ${NETBSDSRCDIR}/sys/ufs/ext2fs ${FSCK}
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.include <bsd.prog.mk>
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45
sbin/newfs_ext2fs/extern.h
Normal file
45
sbin/newfs_ext2fs/extern.h
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/* $NetBSD: extern.h,v 1.1 2007/11/17 16:50:25 tsutsui Exp $ */
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/*
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* Copyright (c) 1997 Christos Zoulas. 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
|
||||
* 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
|
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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 Christos Zoulas.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
|
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* prototypes */
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void mke2fs(const char *, int, int);
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/* variables set up by front end. */
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extern int Nflag; /* run mkfs without writing file system */
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extern int Oflag; /* format as an 4.3BSD file system */
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extern int verbosity; /* amount of printf() output */
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extern int64_t fssize; /* file system size */
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extern uint sectorsize; /* sector size */
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extern uint fsize; /* fragment size */
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extern uint bsize; /* block size */
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extern uint minfree; /* free space threshold */
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extern uint num_inodes; /* number of inodes (overrides density) */
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extern char *volname; /* volume name */
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1422
sbin/newfs_ext2fs/mke2fs.c
Normal file
1422
sbin/newfs_ext2fs/mke2fs.c
Normal file
File diff suppressed because it is too large
Load Diff
321
sbin/newfs_ext2fs/newfs_ext2fs.8
Normal file
321
sbin/newfs_ext2fs/newfs_ext2fs.8
Normal file
@ -0,0 +1,321 @@
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.\" $NetBSD: newfs_ext2fs.8,v 1.1 2007/11/17 16:50:26 tsutsui Exp $
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.\"
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.\" Copyright (c) 1983, 1987, 1991, 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
|
||||
.\" 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 distribution.
|
||||
.\" 3. Neither the name of the University nor the names of its contributors
|
||||
.\" may be used to endorse or promote products derived from this software
|
||||
.\" without specific prior written permission.
|
||||
.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 INTERRUPTION)
|
||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
.\" 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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.\" @(#)newfs.8 8.6 (Berkeley) 5/3/95
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.\"
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.Dd November 17, 2007
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.Dt NEWFS_EXT2FS 8
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.Os
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.Sh NAME
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.Nm newfs_ext2fs
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.Nd construct a new Ext2 file system
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.Sh SYNOPSIS
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.Nm
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.Op Fl FINZ
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.Op Fl b Ar block-size
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.Op Fl f Ar frag-size
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.Op Fl i Ar bytes-per-inode
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.Op Fl m Ar free-space
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.Op Fl n Ar inodes
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.Op Fl O Ar filesystem-format
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.Op Fl S Ar sector-size
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.Op Fl s Ar size
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.Op Fl V Ar verbose
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.Op Fl v Ar volname
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.Ar special
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.Sh DESCRIPTION
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.Nm
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is used to initialize and clear Ext2 file systems before first use.
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Before running
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.Nm
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the disk must be labeled using
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.Xr disklabel 8 .
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.Nm
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builds a file system on the specified special device
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basing its defaults on the information in the disk label.
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Typically the defaults are reasonable, however
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.Nm
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has numerous options to allow the defaults to be selectively overridden.
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.Pp
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Options with numeric arguments may contain an optional (case-insensitive)
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suffix:
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.Bl -tag -width 3n -offset indent -compact
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.It b
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Bytes; causes no modification.
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(Default)
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.It k
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Kilo; multiply the argument by 1024
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.It m
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Mega; multiply the argument by 1048576
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.It g
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Giga; multiply the argument by 1073741824
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.El
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.Pp
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The following options define the general layout policies.
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.Bl -tag -width Fl
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.It Fl b Ar block-size
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The block size of the file system, in bytes.
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It must be a power of two.
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The smallest allowable size is 1024 bytes.
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The default size depends upon the size of the file system:
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.Pp
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.Bl -tag -width "file system size" -compact -offset indent
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.It Sy "file system size"
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.Ar block-size
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.It \*[Lt]= 512 MB
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1 KB
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.It \*[Gt] 512 MB
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4 KB
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.El
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.It Fl F
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Create a file system image in
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.Ar special .
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The file system size needs to be specified with
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.Dq Fl s Ar size .
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No attempts to use or update the disk label will be made.
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.It Fl f Ar frag-size
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The fragment size of the file system in bytes.
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It must be the same with blocksize because current ext2fs
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implementation doesn't support fragmentation.
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.It Fl I
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Do not require that the file system type listed in the disk label is
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.Ql Linux Ext2 .
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.It Fl i Ar bytes-per-inode
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This specifies the density of inodes in the file system.
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If fewer inodes are desired, a larger number should be used;
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to create more inodes a smaller number should be given.
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.It Fl m Ar free-space
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The percentage of space reserved from normal users; the minimum free
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space threshold.
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The default value used is 5%.
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.It Fl N
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Causes the file system parameters to be printed out
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without really creating the file system.
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.It Fl n Ar inodes
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This specifies the number of inodes for the file system.
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If both
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.Fl i
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and
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.Fl n
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are specified then
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.Fl n
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takes precedence.
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The default number of inodes is calculated from a number of blocks in
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the file system.
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.It Fl O Ar filesystem-format
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Select the filesystem-format
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.Bl -tag -width 3n -offset indent -compact
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.It 0
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.Ql GOOD_OLD_REV ;
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This option is primarily used to build root file systems that can be
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understood by old or dumb firmwares for bootstrap. (default)
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.It 1
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.Ql DYNAMIC_REV ;
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Various extended (and sometimes incompatible) features are enabled
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(though not all features are supported on
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.Nx ) .
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Currently only the following features are supported:
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.Bl -tag -width "SPARSESUPER" -offset indent -compact
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.It RESIZE
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Prepare some reserved structures which enable future file system resizing.
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.It FTYPE
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Store file types in directory entries to improve performance.
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.It SPARSESUPER
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Prepare superblock backups for the
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.Xr fsck_ext2fs 8
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utility on not all but sparse block groups.
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.It LARGEFILE
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Enable files larger than 2G bytes.
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.El
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.El
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.It Fl s Ar size
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The size of the file system in sectors.
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An
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.Sq s
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suffix will be interpreted as the number of sectors (the default).
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All other suffixes are interpreted as per other numeric arguments,
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except that the number is converted into sectors by dividing by the
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sector size (as specified by
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.Fl S Ar secsize )
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after suffix interpretation.
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.Pp
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If no
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.Fl s Ar size
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is specified then the filesystem size defaults to that of the partition, or,
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if
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.Fl F
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is specified, the existing file.
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.Pp
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If
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.Ar size
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is negative the specified size is subtracted from the default size
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(reserving space at the end of the partition).
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.It Fl v Ar volname
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This specifies a volume name for the file system.
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.It Fl V Ar verbose
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||||
This controls the amount of information written to stdout:
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.Bl -tag -width 3n -offset indent -compact
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.It 0
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No output
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.It 1
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Overall size and cylinder group details.
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.It 2
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A progress bar (dots ending at right hand margin).
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.It 3
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The first few super-block backup sector numbers are displayed before the
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progress bar.
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.It 4
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All the super-block backup sector numbers are displayed (no progress bar).
|
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.El
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The default is 3.
|
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If
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.Fl N
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is specifed
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.Nm
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stops before outputting the progress bar.
|
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.It Fl Z
|
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Pre-zeros the file system image created with
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.Fl F .
|
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This is necessary if the image is to be used by
|
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.Xr vnd 4
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(which doesn't support file systems with
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.Sq holes ) .
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.El
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||||
.Pp
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||||
The following option overrides the standard sizes for the disk geometry.
|
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The default value is taken from the disk label.
|
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Changing this default is useful only when using
|
||||
.Nm
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to build a file system whose raw image will eventually be used on a
|
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different type of disk than the one on which it is initially created
|
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(for example on a write-once disk).
|
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Note that changing this value from its default will make it impossible for
|
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.Xr fsck_ext2fs 8
|
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to find the alternative superblocks if the standard superblock is lost.
|
||||
.Bl -tag -width Fl
|
||||
.It Fl S Ar sector-size
|
||||
The size of a sector in bytes (almost never anything but 512).
|
||||
Defaults to 512.
|
||||
.El
|
||||
.Sh NOTES
|
||||
There is no option to specify the metadata byte order on the file system
|
||||
to be created because native Ext2 file system is always little endian
|
||||
even on big endian hosts.
|
||||
.Pp
|
||||
The file system is created with
|
||||
.Sq random
|
||||
inode generation numbers to improve NFS security.
|
||||
.Pp
|
||||
The owner and group ids of the root node and reserved blocks of the new
|
||||
file system are set to the effective uid and gid of the user initializing
|
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the file system.
|
||||
.Pp
|
||||
For the
|
||||
.Nm
|
||||
command to succeed,
|
||||
the disk label should first be updated such that the fstype field for the
|
||||
partition is set to
|
||||
.Ql Linux Ext2 ,
|
||||
unless
|
||||
.Fl F
|
||||
or
|
||||
.Fl I
|
||||
is used.
|
||||
.Pp
|
||||
.\" To create and populate a filesystem image within a file use the
|
||||
.\" .Xr makefs 8
|
||||
.\" utility.
|
||||
.\" .Pp
|
||||
The partition size is found using
|
||||
.Xr fstat 2
|
||||
not by inspecting the disklabel.
|
||||
The block size and fragment size will be written back to the disklabel
|
||||
only if the last character of
|
||||
.Ar special
|
||||
references the same partition as the minor device number.
|
||||
that provide disk like block and character devices.
|
||||
.Sh SEE ALSO
|
||||
.Xr fstat 2 ,
|
||||
.Xr disklabel 5 ,
|
||||
.Xr disktab 5 ,
|
||||
.Xr fs 5 ,
|
||||
.Xr disklabel 8 ,
|
||||
.Xr diskpart 8 ,
|
||||
.\" .Xr dumpfs 8 ,
|
||||
.\" .Xr format 8 ,
|
||||
.Xr fsck_ext2fs 8 ,
|
||||
.\" .Xr makefs 8 ,
|
||||
.Xr mount 8 ,
|
||||
.Xr mount_ext2fs 8 ,
|
||||
.Xr newfs 8 ,
|
||||
.Rs
|
||||
.%A Remy Card
|
||||
.%A Theodore Ts'o
|
||||
.%A Stephen Tweedie
|
||||
.%T "Design and Implementation of the Second Extended Filesystem"
|
||||
.%J "The Proceedings of the First Dutch International Symposium on Linux"
|
||||
.Lk http://e2fsprogs.sourceforge.net/ext2intro.html
|
||||
.Re
|
||||
.Sh HISTORY
|
||||
The
|
||||
.Nm
|
||||
command first appeared in
|
||||
.Nx 5.0 .
|
||||
.Sh AUTHORS
|
||||
The
|
||||
.Nm
|
||||
command was written by
|
||||
.An Izumi Tsutsui
|
||||
.Aq tsutsui@NetBSD.org .
|
||||
.Sh BUGS
|
||||
The
|
||||
.Nm
|
||||
command is still experimental and there are few sanity checks.
|
||||
.Pp
|
||||
The
|
||||
.Nm
|
||||
command doesn't have options to specify each REV1 file system feature
|
||||
independently.
|
||||
.Pp
|
||||
The
|
||||
.Nm
|
||||
command doesn't support the bad block list accounted by the bad blocks inode.
|
||||
.Pp
|
||||
Many newer Ext2 file system features (especially journaling) are
|
||||
not supported yet.
|
||||
.Pp
|
||||
Some features in file systems created by the
|
||||
.Nm
|
||||
command might not be recognized properly by the
|
||||
.Xr fsck_ext2fs 8
|
||||
utility.
|
||||
.Pp
|
||||
There is no native tool in the
|
||||
.Nx
|
||||
distribution for resizing Ext2 file systems yet.
|
||||
477
sbin/newfs_ext2fs/newfs_ext2fs.c
Normal file
477
sbin/newfs_ext2fs/newfs_ext2fs.c
Normal file
@ -0,0 +1,477 @@
|
||||
/* $NetBSD: newfs_ext2fs.c,v 1.1 2007/11/17 16:50:26 tsutsui Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1983, 1989, 1993, 1994
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 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 distribution.
|
||||
* 3. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
__COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993, 1994\n\
|
||||
The Regents of the University of California. All rights reserved.\n");
|
||||
#endif /* not lint */
|
||||
|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)newfs.c 8.13 (Berkeley) 5/1/95";
|
||||
#else
|
||||
__RCSID("$NetBSD: newfs_ext2fs.c,v 1.1 2007/11/17 16:50:26 tsutsui Exp $");
|
||||
#endif
|
||||
#endif /* not lint */
|
||||
|
||||
/*
|
||||
* newfs: friendly front end to mke2fs
|
||||
*/
|
||||
#include <sys/param.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/disklabel.h>
|
||||
#include <sys/disk.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/mount.h>
|
||||
|
||||
#include <ufs/ext2fs/ext2fs.h>
|
||||
|
||||
#include <disktab.h>
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
#include <limits.h>
|
||||
#include <paths.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <util.h>
|
||||
#include <mntopts.h>
|
||||
|
||||
#include "extern.h"
|
||||
#include "partutil.h"
|
||||
|
||||
static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *);
|
||||
static void usage(void) __attribute__((__noreturn__));
|
||||
|
||||
/*
|
||||
* For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults,
|
||||
* otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use
|
||||
* L_DFL_*.
|
||||
*/
|
||||
#define SMALL_FSSIZE ((4 * 1024 * 1024) / sectorsize) /* 4MB */
|
||||
#define S_DFL_BSIZE 1024
|
||||
#define MEDIUM_FSSIZE ((512 * 1024 * 1024) / sectorsize) /* 512MB */
|
||||
#define M_DFL_BSIZE 1024
|
||||
#define L_DFL_BSIZE 4096
|
||||
|
||||
/*
|
||||
* Each file system has a number of inodes statically allocated.
|
||||
* We allocate one inode slot per 2, 4, or 8 blocks, expecting this
|
||||
* to be far more than we will ever need.
|
||||
*/
|
||||
#define S_DFL_NINODE(blocks) ((blocks) / 8)
|
||||
#define M_DFL_NINODE(blocks) ((blocks) / 4)
|
||||
#define L_DFL_NINODE(blocks) ((blocks) / 2)
|
||||
|
||||
/*
|
||||
* Default sector size.
|
||||
*/
|
||||
#define DFL_SECSIZE 512
|
||||
|
||||
int Nflag; /* run without writing file system */
|
||||
int Oflag = 0; /* format as conservative REV0 by default */
|
||||
int verbosity; /* amount of printf() output */
|
||||
#define DEFAULT_VERBOSITY 3 /* 4 is traditional behavior of newfs(8) */
|
||||
int64_t fssize; /* file system size */
|
||||
uint sectorsize; /* bytes/sector */
|
||||
uint fsize = 0; /* fragment size */
|
||||
uint bsize = 0; /* block size */
|
||||
uint minfree = MINFREE; /* free space threshold */
|
||||
uint density; /* number of bytes per inode */
|
||||
uint num_inodes; /* number of inodes (overrides density) */
|
||||
char *volname = NULL; /* volume name */
|
||||
|
||||
static char *disktype = NULL;
|
||||
static char device[MAXPATHLEN];
|
||||
|
||||
static const char lmsg[] = "%s: can't read disk label";
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
struct disk_geom geo;
|
||||
struct dkwedge_info dkw;
|
||||
struct statvfs *mp;
|
||||
struct stat sb;
|
||||
int ch, fsi, fso, len, n, Fflag, Iflag, Zflag;
|
||||
char *cp, *s1, *s2, *special;
|
||||
const char *opstring;
|
||||
int byte_sized;
|
||||
uint blocks; /* number of blocks */
|
||||
|
||||
cp = NULL;
|
||||
fsi = fso = -1;
|
||||
Fflag = Iflag = Zflag = 0;
|
||||
verbosity = -1;
|
||||
opstring = "FINO:S:V:Zb:f:i:l:m:n:s:v:";
|
||||
byte_sized = 0;
|
||||
while ((ch = getopt(argc, argv, opstring)) != -1)
|
||||
switch (ch) {
|
||||
case 'F':
|
||||
Fflag = 1;
|
||||
break;
|
||||
case 'I':
|
||||
Iflag = 1;
|
||||
break;
|
||||
case 'N':
|
||||
Nflag = 1;
|
||||
if (verbosity == -1)
|
||||
verbosity = DEFAULT_VERBOSITY;
|
||||
break;
|
||||
case 'O':
|
||||
Oflag = strsuftoi64("format", optarg, 0, 1, NULL);
|
||||
break;
|
||||
case 'S':
|
||||
/*
|
||||
* XXX:
|
||||
* non-512 byte sectors almost certainly don't work.
|
||||
*/
|
||||
sectorsize = strsuftoi64("sector size",
|
||||
optarg, 512, 65536, NULL);
|
||||
if (!powerof2(sectorsize))
|
||||
errx(EXIT_FAILURE,
|
||||
"sector size `%s' is not a power of 2.",
|
||||
optarg);
|
||||
break;
|
||||
case 'V':
|
||||
verbosity = strsuftoi64("verbose", optarg, 0, 4, NULL);
|
||||
break;
|
||||
case 'Z':
|
||||
Zflag = 1;
|
||||
break;
|
||||
case 'b':
|
||||
bsize = strsuftoi64("block size",
|
||||
optarg, MINBSIZE, MAXBSIZE, NULL);
|
||||
break;
|
||||
case 'f':
|
||||
fsize = strsuftoi64("fragment size",
|
||||
optarg, 1, MAXBSIZE, NULL);
|
||||
break;
|
||||
case 'i':
|
||||
density = strsuftoi64("bytes per inode",
|
||||
optarg, 1, INT_MAX, NULL);
|
||||
break;
|
||||
case 'm':
|
||||
minfree = strsuftoi64("free space %",
|
||||
optarg, 0, 99, NULL);
|
||||
break;
|
||||
case 'n':
|
||||
num_inodes = strsuftoi64("number of inodes",
|
||||
optarg, 1, INT_MAX, NULL);
|
||||
break;
|
||||
case 's':
|
||||
fssize = strsuftoi64("file system size",
|
||||
optarg, INT64_MIN, INT64_MAX, &byte_sized);
|
||||
break;
|
||||
case 'v':
|
||||
volname = optarg;
|
||||
if (volname[0] == '\0')
|
||||
errx(EXIT_FAILURE,
|
||||
"Volume name cannot be zero length");
|
||||
break;
|
||||
case '?':
|
||||
default:
|
||||
usage();
|
||||
}
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
if (verbosity == -1)
|
||||
/* Default to showing cg info */
|
||||
verbosity = DEFAULT_VERBOSITY;
|
||||
|
||||
if (argc != 1)
|
||||
usage();
|
||||
|
||||
memset(&sb, 0, sizeof(sb));
|
||||
memset(&dkw, 0, sizeof(dkw));
|
||||
special = argv[0];
|
||||
if (Fflag) {
|
||||
int fl;
|
||||
/*
|
||||
* It's a file system image
|
||||
* no label, use fixed default for sectorsize.
|
||||
*/
|
||||
if (sectorsize == 0)
|
||||
sectorsize = DFL_SECSIZE;
|
||||
|
||||
/* creating image in a regular file */
|
||||
if (Nflag)
|
||||
fl = O_RDONLY;
|
||||
else {
|
||||
if (fssize > 0)
|
||||
fl = O_RDWR | O_CREAT;
|
||||
else
|
||||
fl = O_RDWR;
|
||||
}
|
||||
fsi = open(special, fl, 0777);
|
||||
if (fsi == -1)
|
||||
err(EXIT_FAILURE, "can't open file %s", special);
|
||||
if (fstat(fsi, &sb) == -1)
|
||||
err(EXIT_FAILURE, "can't fstat opened %s", special);
|
||||
if (!Nflag)
|
||||
fso = fsi;
|
||||
} else { /* !Fflag */
|
||||
fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0);
|
||||
special = device;
|
||||
if (fsi < 0 || fstat(fsi, &sb) == -1)
|
||||
err(EXIT_FAILURE, "%s: open for read", special);
|
||||
|
||||
if (!Nflag) {
|
||||
fso = open(special, O_WRONLY, 0);
|
||||
if (fso < 0)
|
||||
err(EXIT_FAILURE,
|
||||
"%s: open for write", special);
|
||||
|
||||
/* Bail if target special is mounted */
|
||||
n = getmntinfo(&mp, MNT_NOWAIT);
|
||||
if (n == 0)
|
||||
err(EXIT_FAILURE, "%s: getmntinfo", special);
|
||||
|
||||
len = sizeof(_PATH_DEV) - 1;
|
||||
s1 = special;
|
||||
if (strncmp(_PATH_DEV, s1, len) == 0)
|
||||
s1 += len;
|
||||
|
||||
while (--n >= 0) {
|
||||
s2 = mp->f_mntfromname;
|
||||
if (strncmp(_PATH_DEV, s2, len) == 0) {
|
||||
s2 += len - 1;
|
||||
*s2 = 'r';
|
||||
}
|
||||
if (strcmp(s1, s2) == 0 ||
|
||||
strcmp(s1, &s2[1]) == 0)
|
||||
errx(EXIT_FAILURE,
|
||||
"%s is mounted on %s",
|
||||
special, mp->f_mntonname);
|
||||
++mp;
|
||||
}
|
||||
}
|
||||
|
||||
if (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1)
|
||||
errx(EXIT_FAILURE, lmsg, special);
|
||||
|
||||
if (sectorsize == 0) {
|
||||
sectorsize = geo.dg_secsize;
|
||||
if (sectorsize <= 0)
|
||||
errx(EXIT_FAILURE, "no default sector size");
|
||||
}
|
||||
|
||||
if (dkw.dkw_parent[0]) {
|
||||
if (dkw.dkw_size == 0)
|
||||
errx(EXIT_FAILURE,
|
||||
"%s partition is unavailable", special);
|
||||
|
||||
if (!Iflag) {
|
||||
static const char m[] =
|
||||
"%s partition type is not `%s' (or use -I)";
|
||||
if (strcmp(dkw.dkw_ptype, DKW_PTYPE_EXT2FS))
|
||||
errx(EXIT_FAILURE, m,
|
||||
special, "Linux Ext2");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (byte_sized)
|
||||
fssize /= sectorsize;
|
||||
if (fssize <= 0) {
|
||||
if (sb.st_size != 0)
|
||||
fssize += sb.st_size / sectorsize;
|
||||
else
|
||||
fssize += dkw.dkw_size;
|
||||
if (fssize <= 0)
|
||||
errx(EXIT_FAILURE,
|
||||
"Unable to determine file system size");
|
||||
}
|
||||
|
||||
if (dkw.dkw_parent[0] && fssize > dkw.dkw_size)
|
||||
errx(EXIT_FAILURE,
|
||||
"size %" PRIu64 " exceeds maximum file system size on "
|
||||
"`%s' of %" PRIu64 " sectors",
|
||||
fssize, special, dkw.dkw_size);
|
||||
|
||||
/* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */
|
||||
if (Fflag && fso != -1
|
||||
&& ftruncate(fso, (off_t)fssize * sectorsize) == -1)
|
||||
err(1, "can't ftruncate %s to %" PRId64, special, fssize);
|
||||
|
||||
if (Zflag && fso != -1) { /* pre-zero (and de-sparce) the file */
|
||||
char *buf;
|
||||
int bufsize, i;
|
||||
off_t bufrem;
|
||||
struct statvfs sfs;
|
||||
|
||||
if (fstatvfs(fso, &sfs) == -1) {
|
||||
warn("can't fstatvfs `%s'", special);
|
||||
bufsize = 8192;
|
||||
} else
|
||||
bufsize = sfs.f_iosize;
|
||||
|
||||
if ((buf = calloc(1, bufsize)) == NULL)
|
||||
err(1, "can't malloc buffer of %d",
|
||||
bufsize);
|
||||
bufrem = fssize * sectorsize;
|
||||
if (verbosity > 0)
|
||||
printf("Creating file system image in `%s', "
|
||||
"size %" PRId64 " bytes, in %d byte chunks.\n",
|
||||
special, bufrem, bufsize);
|
||||
while (bufrem > 0) {
|
||||
i = write(fso, buf, MIN(bufsize, bufrem));
|
||||
if (i == -1)
|
||||
err(1, "writing image");
|
||||
bufrem -= i;
|
||||
}
|
||||
free(buf);
|
||||
}
|
||||
|
||||
/* Sort out fragment and block sizes */
|
||||
if (bsize == 0) {
|
||||
bsize = fsize;
|
||||
if (bsize == 0) {
|
||||
if (fssize < SMALL_FSSIZE)
|
||||
bsize = S_DFL_BSIZE;
|
||||
else if (fssize < MEDIUM_FSSIZE)
|
||||
bsize = M_DFL_BSIZE;
|
||||
else
|
||||
bsize = L_DFL_BSIZE;
|
||||
}
|
||||
}
|
||||
if (fsize == 0)
|
||||
fsize = bsize;
|
||||
|
||||
blocks = fssize * sectorsize / bsize;
|
||||
|
||||
if (num_inodes == 0) {
|
||||
if (density != 0)
|
||||
num_inodes = fssize / density;
|
||||
else {
|
||||
if (fssize < SMALL_FSSIZE)
|
||||
num_inodes = S_DFL_NINODE(blocks);
|
||||
else if (fssize < MEDIUM_FSSIZE)
|
||||
num_inodes = M_DFL_NINODE(blocks);
|
||||
else
|
||||
num_inodes = L_DFL_NINODE(blocks);
|
||||
}
|
||||
}
|
||||
mke2fs(special, fsi, fso);
|
||||
|
||||
if (fsi != -1)
|
||||
close(fsi);
|
||||
if (fso != -1 && fso != fsi)
|
||||
close(fso);
|
||||
exit(EXIT_SUCCESS);
|
||||
}
|
||||
|
||||
static int64_t
|
||||
strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max,
|
||||
int *num_suffix)
|
||||
{
|
||||
int64_t result, r1;
|
||||
int shift = 0;
|
||||
char *ep;
|
||||
|
||||
errno = 0;
|
||||
r1 = strtoll(arg, &ep, 10);
|
||||
if (ep[0] != '\0' && ep[1] != '\0')
|
||||
errx(EXIT_FAILURE,
|
||||
"%s `%s' is not a valid number.", desc, arg);
|
||||
switch (ep[0]) {
|
||||
case '\0':
|
||||
case 's':
|
||||
case 'S':
|
||||
if (num_suffix != NULL)
|
||||
*num_suffix = 0;
|
||||
break;
|
||||
case 'g':
|
||||
case 'G':
|
||||
shift += 10;
|
||||
/* FALLTHROUGH */
|
||||
case 'm':
|
||||
case 'M':
|
||||
shift += 10;
|
||||
/* FALLTHROUGH */
|
||||
case 'k':
|
||||
case 'K':
|
||||
shift += 10;
|
||||
/* FALLTHROUGH */
|
||||
case 'b':
|
||||
case 'B':
|
||||
if (num_suffix != NULL)
|
||||
*num_suffix = 1;
|
||||
break;
|
||||
default:
|
||||
errx(EXIT_FAILURE,
|
||||
"`%s' is not a valid suffix for %s.", ep, desc);
|
||||
}
|
||||
result = r1 << shift;
|
||||
if (errno == ERANGE || result >> shift != r1)
|
||||
errx(EXIT_FAILURE,
|
||||
"%s `%s' is too large to convert.", desc, arg);
|
||||
if (result < min)
|
||||
errx(EXIT_FAILURE,
|
||||
"%s `%s' (%" PRId64 ") is less than the minimum (%"
|
||||
PRId64 ").", desc, arg, result, min);
|
||||
if (result > max)
|
||||
errx(EXIT_FAILURE,
|
||||
"%s `%s' (%" PRId64 ") is greater than the maximum (%"
|
||||
PRId64 ").", desc, arg, result, max);
|
||||
return result;
|
||||
}
|
||||
|
||||
static const char help_strings[] =
|
||||
"\t-F \t\tcreate file system image in regular file\n"
|
||||
"\t-I \t\tdo not check that the file system type is `Linux Ext2'\n"
|
||||
"\t-N \t\tdo not create file system, just print out parameters\n"
|
||||
"\t-O N\t\tfilesystem revision: 0 ==> REV0, 1 ==> REV1 (default 0)\n"
|
||||
"\t-S secsize\tsector size\n"
|
||||
"\t-V verbose\toutput verbosity: 0 ==> none, 4 ==> max\n"
|
||||
"\t-Z \t\tpre-zero the image file\n"
|
||||
"\t-b bsize\tblock size\n"
|
||||
"\t-f fsize\tfragment size\n"
|
||||
"\t-i density\tnumber of bytes per inode\n"
|
||||
"\t-m minfree\tminimum free space %\n"
|
||||
"\t-n inodes\tnumber of inodes (overrides -i density)\n"
|
||||
"\t-s fssize\tfile system size (sectors)\n"
|
||||
"\t-v volname\text2fs volume name\n";
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
|
||||
fprintf(stderr,
|
||||
"usage: %s [ fsoptions ] special-device\n", getprogname());
|
||||
fprintf(stderr, "where fsoptions are:\n");
|
||||
fprintf(stderr, "%s", help_strings);
|
||||
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user