Edit File: Kconfig.char
menu "UML Character Devices" config STDERR_CONSOLE bool "stderr console" default y help console driver which dumps all printk messages to stderr. config STDIO_CONSOLE bool default y config SSL bool "Virtual serial line" help The User-Mode Linux environment allows you to create virtual serial lines on the UML that are usually made to show up on the host as ttys or ptys. See <http://user-mode-linux.sourceforge.net/old/input.html> for more information and command line examples of how to use this facility. Unless you have a specific reason for disabling this, say Y. config NULL_CHAN bool "null channel support" help This option enables support for attaching UML consoles and serial lines to a device similar to /dev/null. Data written to it disappears and there is never any data to be read. config PORT_CHAN bool "port channel support" help This option enables support for attaching UML consoles and serial lines to host portals. They may be accessed with 'telnet <host> <port number>'. Any number of consoles and serial lines may be attached to a single portal, although what UML device you get when you telnet to that portal will be unpredictable. It is safe to say 'Y' here. config PTY_CHAN bool "pty channel support" help This option enables support for attaching UML consoles and serial lines to host pseudo-terminals. Access to both traditional pseudo-terminals (/dev/pty*) and pts pseudo-terminals are controlled with this option. The assignment of UML devices to host devices will be announced in the kernel message log. It is safe to say 'Y' here. config TTY_CHAN bool "tty channel support" help This option enables support for attaching UML consoles and serial lines to host terminals. Access to both virtual consoles (/dev/tty*) and the slave side of pseudo-terminals (/dev/ttyp* and /dev/pts/*) are controlled by this option. It is safe to say 'Y' here. config XTERM_CHAN bool "xterm channel support" help This option enables support for attaching UML consoles and serial lines to xterms. Each UML device so assigned will be brought up in its own xterm. It is safe to say 'Y' here. config NOCONFIG_CHAN bool default !(XTERM_CHAN && TTY_CHAN && PTY_CHAN && PORT_CHAN && NULL_CHAN) config CON_ZERO_CHAN string "Default main console channel initialization" default "fd:0,fd:1" help This is the string describing the channel to which the main console will be attached by default. This value can be overridden from the command line. The default value is "fd:0,fd:1", which attaches the main console to stdin and stdout. It is safe to leave this unchanged. config CON_CHAN string "Default console channel initialization" default "xterm" help This is the string describing the channel to which all consoles except the main console will be attached by default. This value can be overridden from the command line. The default value is "xterm", which brings them up in xterms. It is safe to leave this unchanged, although you may wish to change this if you expect the UML that you build to be run in environments which don't have X or xterm available. config SSL_CHAN string "Default serial line channel initialization" default "pty" help This is the string describing the channel to which the serial lines will be attached by default. This value can be overridden from the command line. The default value is "pty", which attaches them to traditional pseudo-terminals. It is safe to leave this unchanged, although you may wish to change this if you expect the UML that you build to be run in environments which don't have a set of /dev/pty* devices. config UML_SOUND tristate "Sound support" help This option enables UML sound support. If enabled, it will pull in soundcore and the UML hostaudio relay, which acts as a intermediary between the host's dsp and mixer devices and the UML sound system. It is safe to say 'Y' here. config SOUND tristate default UML_SOUND config SOUND_OSS_CORE bool default UML_SOUND config HOSTAUDIO tristate default UML_SOUND endmenu