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.\" Copyright (c) 1995 James R. Van Zandt <jrv@vanzandt.mv.com>
.\" Sat Feb 18 09:11:07 EST 1995
.\"
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"
.\" The GNU General Public License's references to "object code"
.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual; if not, write to the Free
.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
.\" USA.
.\"
.\" Modified, Sun Feb 26 15:08:05 1995, faith@cs.unc.edu
.\" "
.\" Japanese Version Copyright (c) 1996,1997,1998 ISHIKAWA Mutsumi
.\" all rights reserved.
.\" Translated Tue Feb 6 16:30:31 JST 1997
.\" by ISHIKAWA Mutsumi <ishikawa@linux.or.jp>
.\"
.\" Japanese Version Last Modified Sun Jan 11 03:55:54 1998
.\" by ISHIKAWA Mutsumi <ishikawa@linux.or.jp>
.\" Updated Sat Feb 10 23:17:30 JST 2001
.\" by Yuichi SATO <sato@complex.eng.hokudai.ac.jp>
.\"
.\" WORD: virtual console ۥ
.\" WORD: memory
.\" WORD: permission ѡߥå
.\" WORD: prefix ץեå
.\" WORD: screen
.\" WORD: cursor
.\" WORD: Braille ֥饤
.\"
.TH VCS 4 "February 19, 1995" "Linux" "Linux Programmer's Manual"
.SH ̾
vcs, vcsa \- ۥ (virtual console memory)
.SH
\fB/dev/vcs0\fP ϥ㡼ʥС (major number) 7ޥʡʥС
(minor number) 0 ǡ̤ϥ⡼ 0644ʡroot.tty
饯ǥХ (character device) Ǥ롣
ΥǥХե (device file)
ɽƤ벾ۥüΥȤ롣
.LP
\fB/dev/vcs[1-63]\fP ϲۥüΤ
饯ǥХǡ㡼ʥС 7ޥʡʥС 1 63
̾⡼ 0644ʡ root.tty Ǥ롣
\fB/dev/vcsa[0-63]\fP \fB/dev/vcs[1-63]\fP ƱͤǤ뤬
°Υΰ֤ɽ 4 ХȤΥץեå:
\fIlines\fP, \fIcolumns\fP,\fIx\fP, \fIy\fP
(\fIx\fP =\fIy\fP = 0 ̤κ) ޤǤ롣
.PP
\fBconsole\fP(4) screendump
.I ioctl
ؤ롣
äơƥԤϥե륷ƥѡߥå
(filesystem permission) ȤäƥȥǤ롣
.PP
ǽ 8 ĤβüΤΥǥХϡΤ褦ˤƺǤ:
.nf
for x in 0 1 2 3 4 5 6 7 8; do
mknod -m 644 /dev/vcs$x c 7 $x;
mknod -m 644 /dev/vcsa$x c 7 $[$x+128];
done
chown root:tty /dev/vcs*
.fi
.IR ioctl ()
ˤϥݡȤʤ
.SH
vt1 ؤ vt3 Υפ¹Ԥˤϡ
\fIcat /dev/vcs3 >foo\fP ȥפФ褤
դߤΤϡνϤϲʸޤǤʤȤǤ롣
äơ\fIfold -w 81 /dev/vcs3 | lpr\fP
(äȤ뤬) \fIsetterm -dump 3 -file /proc/self/fd/1\fP Τ褦
餫νᤵ롣
.LP
\fI/dev/vcsa0\fP ǥХϡ֥饤ݡȤ뤿˻Ȥ롣
ʲΥץۥΥβΥ°ʸ
ɽˤطʿѹ롣:
.nf
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
int main() {
int fd;
struct {char lines, cols, x, y;} scrn;
char ch, attrib;
fd = open("/dev/vcsa2", O_RDWR);
(void)read(fd, &scrn, 4);
(void)lseek(fd, 4 + 2*(scrn.y*scrn.cols + scrn.x), 0);
(void)read(fd, &ch, 1);
(void)read(fd, &attrib, 1);
printf("ch='%c' attrib=0x%02x\\n", ch, attrib);
attrib ^= 0x10;
(void)lseek(fd, -1, 1);
(void)write(fd, &attrib, 1);
return 0;
}
.fi
.SH ե
/dev/vcs[0-63]
.br
/dev/vcsa[0-63]
.SH
Andries Brouwer <aeb@cwi.nl>
.SH
Linux ͥС 1.1.92 Ƴ줿
.SH Ϣ
.BR console (4),
.BR tty (4),
.BR ttys (4),
.BR selection (1)
.SH
<ishikawa@linux.or.jp>
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