console(7d) [opensolaris man page]
console(7D) Devices console(7D) NAME
console - STREAMS-based console interface SYNOPSIS
/dev/console DESCRIPTION
The file /dev/console refers to the system console device. /dev/console should be used for interactive purposes only. Use of /dev/console for logging purposes is discouraged; syslog(3C) or msglog(7D) should be used instead. The identity of this device depends on the EEPROM or NVRAM settings in effect at the most recent system reboot; by default, it is the ``workstation console'' device consisting of the workstation keyboard and frame buffer acting in concert to emulate an ASCII terminal (see wscons(7D)). Regardless of the system configuration, the console device provides asynchronous serial driver semantics so that, in conjunction with the STREAMS line discipline module ldterm(7M), it supports the termio(7I) terminal interface. SEE ALSO
syslog(3C), termios(3C), ldterm(7M), termio(7I), msglog(7D), wscons(7D) NOTES
In contrast to pre-SunOS 5.0 releases, it is no longer possible to redirect I/O intended for /dev/console to some other device. Instead, redirection now applies to the workstation console device using a revised programming interface (see wscons(7D)). Since the system console is normally configured to be the work station console, the overall effect is largely unchanged from previous releases. See wscons(7D) for detailed descriptions of control sequence syntax, ANSI control functions, control character functions and escape sequence functions. SunOS 5.11 23 Apr 1999 console(7D)
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ttymux(7D) Devices ttymux(7D) NAME
ttymux - Serial I/O multiplexing STREAMS device driver SYNOPSIS
multiplexer@0,0:input multiplexer@0,0:output DESCRIPTION
ttymux is a STREAMS multiplexer driver that connects multiple serial devices to the system console. Using this driver, input from multiple physical devices can be multiplexed onto a single input stream for the system console. Output written to the console can be distributed to multiple physical devices to provide redundant console interfaces to a system. Input and output can be multiplexed to or from a separate list of devices. ttymux is a STREAM's multiplexer for serial drivers (such as se(7D)) that comply with the Solaris terminal subsystem interface. Currently, multiplexer interfaces are provided for system console I/O only and not for general serial I/O multiplexing. Multiplexer inter- faces are currently not available for all platforms. Please see NOTES. FILES
/kernel/drv/sparcv9/ttym64- bit ELF kernel module ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |SPARC (NetraCT series only) | +-----------------------------+-----------------------------+ SEE ALSO
se(7D), termio(7I) Writing Device Drivers NOTES
Successful loading of this driver and its services depends on the EEPROM or NVRAM settings in effect at the most recent system reboot. Without the platform firmware support, this feature cannot be enabled. Currently, this support is provided only on a NetraCT product fam- ily. Use caution when enabling this feature to perform console input multiplexing, particularly during super-user login. Because no security measures are enabled when the driver is in operation, you must clearly understand the security implications involved in using this feature and take appropriate measures to provide maximum protection to the host. This can include such steps as enabling input to physically secured console devices only. The ttymux driver does not handle the behavioral differences in control characteristics of different terminal types (for example, an ESCAPE sequence.) As a result, multiple terminal types are not supported simultaneously. Please refer to the platform user guide for more informa- tion. SunOS 5.10 20 Jul 2001 ttymux(7D)