menu "Character Devices"
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/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 FD_CHAN
bool "file descriptor channel support"
help
This option enables support for attaching UML consoles and serial
lines to already set up file descriptors. Generally, the main
console is attached to file descriptors 0 and 1 (stdin and stdout),
so it would be wise to leave this enabled unless you intend to
attach it to some other host device.
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.
If you disable this option, then CONFIG_PT_PROXY will be disabled as
well, since UML's gdb currently requires an xterm.
It is safe to say 'Y' here.
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 UNIX98_PTYS
bool "Unix98 PTY support"
config UNIX98_PTY_COUNT
int "Maximum number of Unix98 PTYs in use (0-2048)"
depends on UNIX98_PTYS
default "256"
config WATCHDOG
bool "Watchdog Timer Support"
config WATCHDOG_NOWAYOUT
bool "Disable watchdog shutdown on close"
depends on WATCHDOG
config SOFT_WATCHDOG
tristate "Software Watchdog"
depends on WATCHDOG
config UML_WATCHDOG
tristate "UML watchdog"
depends on WATCHDOG
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 HOSTAUDIO
tristate
default UML_SOUND
endmenu