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.\" Japanese Version Copyright (c) 1997-2000 NAKANO Takeo all rights reserved.
.\" Translated Thu Nov 3 1997 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\" Updated & Modified Thu 19 Oct 2000 by NAKANO Takeo
.\" Updated & Modified Wed May 5 16:10:26 JST 2004
.\" by Yuichi SATO <ysato444@yahoo.co.jp>
.\"
.TH LOSETUP 8 "2003-07-01" "Linux" "MAINTENANCE COMMANDS"
.SH ̾
losetup \- loop ǥХԤ
.SH
.ad l
.B losetup
[
.RB [ \-e | \-E ]
.I encryption
] [
.B \-o
.I offset
] [
.B \-p
.I pfd
]
.I loop_device file
.br
.B losetup
[
.B \-d
]
.I loop_device
.ad b
.SH
.B losetup
loop ǥХ̾Υե֥åǥХ³/Ǥꡢ
loop ǥХؤ䤤碌ԤѤ롣
Ȥ
.I loop_device
Ϳ줿˸¤ꡢб loop ǥХξ֤ɽ롣
.SS "Ź沽"
.B \-E
ޤ
.B \-e
ץΤ줫 1 Ĥˤꡢ
(Ź沽沽䤽¾ŪǻȤ) Ѵؿꤹ뤳ȤǤ롣
ȤŹ沽ǽꤹ 2 ĤλȤߤ롣
ֹǻꤹˡ̾ǻꤹˡǤ롣
Ź沽ǽֹǻꤹ硢
Linux ͥ뤬ֹΰŹ沽ǽΤäƤ뤳Ȥ
ǧƤʤФʤʤ
ΰŹ沽ǽϡ֤ͥؤΥѥå롣
ƤɸŪֹϡ
0 (Ź沽ʤ) 1 (XOR Ź沽) Ǥ롣
cryptoloop ⥸塼뤬ɤ (ޤȤ߹ޤƤ)
Υ⥸塼ֹ 18 Ȥ
cryptoloop ǤդΰŹ沽פ̾ꡢ
ΰŹ沽¹Բǽʥ⥸塼õ
(äơ桼
.B \-E
ץ 18 ʳֹꤹ뤫
.B \-e
ץ̾ꤹФ褤)
.SH ץ
.IP \fB\-d\fP
ꤷ loop ǥХбեǥХڤ
.IP "\fB\-E \fIencryption_type\fP"
ꤵ줿ֹΥǡŹ沽ǽͭˤ롣
.IP "\fB\-e \fIencryption_name\fP"
ꤵ줿̾ΥǡŹ沽ǽͭˤ롣
.IP "\fB\-o \fIoffset\fP"
ǡγꤷեǥХ
.I offset
ХȤ˰ư롣
.IP "\fB\-p \fInum\fP"
ѥե졼üǤϤʤֹ
.I num
Υեǥץɤ߹ࡣ
.SH ֤
.B losetup
ȥ֤Ԥȥʳ֤
.B losetup
loop ǥХξ֤ɽϡ
ǥХꤵƤʤ 1
ǥХξ֤Ǥʤ褦ʥ顼ä
2 ֤
.SH ե
.nf
/dev/loop0, /dev/loop1, ... 롼ץǥХ (major=7)
.fi
.SH
֥⥸塼ѤƤϡ
ޤʲΥޥɤˤäƥ⥸塼ɤɬפ롣
.IP
# insmod loop.o
.LP
Ź沽⥸塼ɬפΤʤ
.nf
.IP
# insmod des.o
# insmod cryptoloop.o
.fi
.LP
ʲΰϢΥޥɤ loop ǥХλǤ롣
.nf
.IP
# dd if=/dev/zero of=/file bs=1k count=100
# losetup -e des /dev/loop0 /file
Password:
Init (up to 16 hex digits):
# mkfs -t ext2 /dev/loop0 100
# mount -t ext2 /dev/loop0 /mnt
...
# umount /dev/loop0
# losetup -d /dev/loop0
.fi
.LP
֥⥸塼ѤƤϡ
ʲΥޥɤˤäƥ⥸塼뤳ȤǤ롣
.IP
# rmmod loop
.LP
.fi
.SH
DES Ź沽٤ XOR ˼夤
.\" .SH
.\" .nf
.\" ꥸʥ: Theodore Ts'o <tytso@athena.mit.edu>
.\" ꥸʥ DES : Eric Young <eay@psych.psy.uq.oz.au>
.\" .fi
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