(split) LDP v3.24 -> v3.29 の定型的な変更内容を反映。

[linuxjm/LDP_man-pages.git] / draft / man4 / pts.4

.\" Hey Emacs! This file is -*- nroff -*- source.
.\" This man page was written by Jeremy Phelps <jphelps@notreached.net>.
.\" Notes added - aeb
.\" Redistribute and revise at will.
.\"
.\" Japanese Version Copyright (c) 2003  Akihiro MOTOKI
.\"         all rights reserved.
.\" Translated Tue Jul  8 00:28:17 JST 2003
.\"         by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.\"WORD:        pseudoterminal          µ¼»÷üËö
.\"WORD:        pts                     µ¼»÷üËö
.\"
.TH PTS 4 2002-10-09 "Linux" "Linux Programmer's Manual"
.\"O .SH NAME
.SH ̾Á°
.\"O ptmx, pts \- pseudoterminal master and slave
ptmx, pts \- µ¼»÷üËö¤Î¥Þ¥¹¥¿¤È¥¹¥ì¡¼¥Ö
.\"O .SH DESCRIPTION
.SH ÀâÌÀ
.\"O The file \fI/dev/ptmx\fP is a character file with major number 5 and
.\"O minor number 2, usually of mode 0666 and owner.group of root.root.
.\"O It is used to create a pseudoterminal master and slave pair.
¥Õ¥¡¥¤¥ë \fI/dev/ptmx\fP ¤Ï¡¢¥á¥¸¥ã¡¼¥Ê¥ó¥Ð¡¼ (major number) 5¡¢
¥Þ¥¤¥Ê¡¼¥Ê¥ó¥Ð¡¼ (minor number) 2 ¤ò»ý¤Ä¥­¥ã¥é¥¯¥¿¡¦¥Õ¥¡¥¤¥ë¤Ç¤¢¤ê¡¢
Ä̾¥â¡¼¥É¤Ï 0666 ¤Ç¡¢½êÍ­¼Ô.¥°¥ë¡¼¥×¤Ï root.root ¤Ç¤¢¤ë¡£
¤³¤Î¥Õ¥¡¥¤¥ë¤Ï¡¢µ¼»÷üËö (pseudoterminal) ¤Î¥Þ¥¹¥¿¤È¥¹¥ì¡¼¥Ö¤Î
¥Ú¥¢¤òºîÀ®¤¹¤ë¤¿¤á¤Ë»ÈÍѤµ¤ì¤ë¡£
.PP
.\"O When a process opens \fI/dev/ptmx\fP, it gets a file
.\"O descriptor for a pseudoterminal master (PTM),
.\"O and a pseudoterminal slave (PTS) device is created in the
.\"O .I /dev/pts
.\"O directory.
.\"O Each file descriptor obtained by opening \fI/dev/ptmx\fP
.\"O is an independent PTM with its own associated PTS, whose path can
.\"O be found by passing the descriptor to
.\"O .BR ptsname (3).
¥×¥í¥»¥¹¤¬ \fI/dev/ptmx\fP ¤ò¥ª¡¼¥×¥ó¤¹¤ë¤È¡¢¤½¤Î¥×¥í¥»¥¹¤Ë¤Ï
µ¼»÷üËö¥Þ¥¹¥¿ (pseudoterminal master; PTM) ¤Ø¤Î¥Õ¥¡¥¤¥ë¡¦
¥Ç¥£¥¹¥¯¥ê¥×¥¿¤¬ÊÖ¤µ¤ì¡¢
.I /dev/pts
¥Ç¥£¥ì¥¯¥È¥ê¤Ëµ¼»÷üËö¥¹¥ì¡¼¥Ö (pseudoterminal slave; PTS)
¥Ç¥Ð¥¤¥¹¤¬ºîÀ®¤µ¤ì¤ë¡£
\fI/dev/ptmx\fP ¤ò¥ª¡¼¥×¥ó¤·¤ÆÆÀ¤é¤ì¤ë¥Õ¥¡¥¤¥ë¡¦¥Ç¥£¥¹¥¯¥ê¥×¥¿¤Ï
¤½¤ì¤¾¤ìÆÈΩ¤Î PTM ¤Ç¤¢¤ê¡¢Âбþ¤¹¤ë PTS ¤ò³Æ¡¹»ý¤Ä¡£
PTS ¤Î¥Ñ¥¹Ì¾¤Ï¡¢PTM ¤Î¥Õ¥¡¥¤¥ë¡¦¥Ç¥£¥¹¥¯¥ê¥×¥¿¤ò
.BR ptsname (3)
¤ËÅϤ¹¤ÈÃΤ뤳¤È¤¬¤Ç¤­¤ë¡£
.PP
.\"O Before opening the pseudoterminal slave, you must pass the master's file
.\"O descriptor to
.\"O .BR grantpt (3)
.\"O and
.\"O .BR unlockpt (3).
µ¼»÷üËö¥¹¥ì¡¼¥Ö¤ò¥ª¡¼¥×¥ó¤¹¤ëÁ°¤Ë¡¢É¬¤º¡¢¥Þ¥¹¥¿¤Î¥Õ¥¡¥¤¥ë¡¦¥Ç¥£¥¹¥¯¥ê¥×¥¿¤ò
°ú¤­¿ô¤È¤·¤Æ
.BR grantpt (3)
¤È
.BR unlockpt (3)
¤ò¸Æ¤Ó½Ð¤µ¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.PP
.\"O Once both the pseudoterminal master and slave are open, the slave provides
.\"O processes with an interface that is identical to that of a real terminal.
µ¼»÷üËö¤Î¥Þ¥¹¥¿¤È¥¹¥ì¡¼¥Ö¤ÎξÊý¤¬¥ª¡¼¥×¥ó¤µ¤ì¤¿¸å¤Ï¡¢¥¹¥ì¡¼¥Ö¤Ï¡¢
¥×¥í¥»¥¹¤ËÂФ·¤Æ¡¢¼ÂüËö (real terminal) ¤ÈÁ´¤¯Æ±¤¸¥¤¥ó¥¿¥Õ¥§¡¼¥¹¤òÄ󶡤¹¤ë¡£
.PP
.\"O Data written to the slave is presented on the master descriptor as input.
.\"O Data written to the master is presented to the slave as input.
¥¹¥ì¡¼¥Ö¤Ë½ñ¤«¤ì¤¿¥Ç¡¼¥¿¤Ï¥Þ¥¹¥¿¡¦¥Ç¥£¥¹¥¯¥ê¥×¥¿¤ËÂФ¹¤ëÆþÎϤȤ·¤Æ°·¤ï¤ì¡¢
¥Þ¥¹¥¿¤Ë½ñ¤«¤ì¤¿¥Ç¡¼¥¿¤Ï¥¹¥ì¡¼¥Ö¤ËÂФ¹¤ëÆþÎϤȤ·¤Æ°·¤ï¤ì¤ë¡£
.PP
.\"O In practice, pseudoterminals are used for implementing terminal emulators
.\"O such as
.\"O .BR xterm (1),
.\"O in which data read from the pseudoterminal master is interpreted by the
.\"O application in the same way
.\"O a real terminal would interpret the data, and for implementing remote-login
.\"O programs such as
.\"O .BR sshd (8),
.\"O in which data read from the pseudoterminal master is sent across the network
.\"O to a client program that is connected to a terminal or terminal emulator.
¼ÂÎã¤ò¤¢¤²¤ë¤È¡¢µ¼»÷üËö¤Ï
.BR xterm (1)
¤Î¤è¤¦¤ÊüËö¥¨¥ß¥å¥ì¡¼¥¿¤ò¼ÂÁõ¤¹¤ë¤Î¤Ë»ÈÍѤµ¤ì¤Æ¤¤¤ë¡£
üËö¥¨¥ß¥å¥ì¡¼¥¿¤Ç¤Ï¡¢µ¼»÷üËö¤Î¥Þ¥¹¥¿¤«¤éÆɤ߹þ¤Þ¤ì¤¿¥Ç¡¼¥¿¤Ï¡¢
¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ë¤È¤Ã¤Æ¼ÂüËö¤Î¥Ç¡¼¥¿¤ÈÁ´¤¯Æ±¤¸¤â¤Î¤Î¤è¤¦¤Ë¸«¤¨¤ë¡£
¤Þ¤¿¡¢
.BR sshd (8)
¤Î¤è¤¦¤Ê¥ê¥â¡¼¥È¡¦¥í¥°¥¤¥óÍÑ¤Î¥×¥í¥°¥é¥à¤Î¼ÂÁõ¤Ç¤Ï¡¢
µ¼»÷üËö¥Þ¥¹¥¿¤«¤éÆɤ߹þ¤Þ¤ì¤¿¥Ç¡¼¥¿¤Ï¡¢¥Í¥Ã¥È¥ï¡¼¥¯¤ò·Ðͳ¤·¤Æ¡¢
üËö¤äüËö¥¨¥ß¥å¥ì¡¼¥¿¤ËÀܳ¤µ¤ì¤Æ¤¤¤ë¥¯¥é¥¤¥¢¥ó¥È¡¦¥×¥í¥°¥é¥à¤ËÁ÷¿®¤µ¤ì¤ë¡£
.PP
.\"O Pseudoterminals can also be used to send input to programs that normally
.\"O refuse to read input from pipes (such as
.\"O .BR su (1),
.\"O and
.\"O .BR passwd (1)).
µ¼»÷üËö¤Ï¡¢
.RB ( su (1)
¤ä
.BR passwd (1)
¤Î¤è¤¦¤Ê) Ä̾ï¤Ï¥Ñ¥¤¥×¤«¤é¤ÎÆþÎϤòµñÈݤ¹¤ë¥×¥í¥°¥é¥à¤Ë¡¢
ÆþÎϤòÁ÷¿®¤¹¤ë¤¿¤á¤Ë¤â»ÈÍѤǤ­¤ë¡£
.\"O .SH FILES
.SH ¥Õ¥¡¥¤¥ë
.IR /dev/ptmx ,
.I /dev/pts/*
.\"O .SH NOTES
.SH È÷¹Í
.\"O The Linux support for the above (known as UNIX 98 pseudoterminal naming)
.\"O is done using the
.\"O .I devpts
.\"O file system, that should be mounted on
.\"O .IR /dev/pts .
(UNIX 98 pseudoterminal naming ¤È¸Æ¤Ð¤ì¤ë)
¾åµ­¤Îµ¡Ç½¤Î Linux ¤Ç¤Î¥µ¥Ý¡¼¥È¤Ï¡¢Ä̾ï
.I /dev/pts
¤Ë¥Þ¥¦¥ó¥È¤µ¤ì¤ë¤Ï¤º¤Î
.I devpts
¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤òÄ̤·¤Æ¼Â¸½¤µ¤ì¤Æ¤¤¤ë¡¢
.LP
.\"O Before this UNIX 98 scheme, master pseudoterminals were called
.\"O .IR /dev/ptyp0 ", ..."
.\"O and slave pseudoterminals
.\"O .IR /dev/ttyp0 ", ..."
.\"O and one needed lots of preallocated device nodes.
¤³¤Î UNIX 98 ¥¹¥­¡¼¥à¤¬Æ³Æþ¤µ¤ì¤ëÁ°¤Ï¡¢¥Þ¥¹¥¿µ¼»÷üËö¤Ï
.IR /dev/ptyp0 ", ..."
¡¢¥¹¥ì¡¼¥Öµ¼»÷üËö¤Ï
.IR /dev/ttyp0 ", ..."
¤È¸Æ¤Ð¤ì¤Æ¤ª¤ê¡¢¤¢¤é¤«¤¸¤á¤¿¤¯¤µ¤ó¤Î¥Ç¥Ð¥¤¥¹¡¦¥Î¡¼¥É¤ò³ä¤êÅö¤Æ¤Æ
¤ª¤¯É¬Íפ¬¤¢¤Ã¤¿¡£
.\"O .SH "SEE ALSO"
.SH ´ØÏ¢¹àÌÜ
.BR getpt (3),
.BR grantpt (3),
.BR ptsname (3),
.BR unlockpt (3),
.BR pty (7)