139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
/*
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* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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/** @file
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*
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* VMware logfile console
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*
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*/
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#include <string.h>
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#include <ipxe/console.h>
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#include <ipxe/lineconsole.h>
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#include <ipxe/init.h>
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#include <ipxe/guestrpc.h>
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#include <config/console.h>
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/** VMware logfile console buffer size */
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#define VMCONSOLE_BUFSIZE 128
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/* Set default console usage if applicable */
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#if ! ( defined ( CONSOLE_VMWARE ) && CONSOLE_EXPLICIT ( CONSOLE_VMWARE ) )
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#undef CONSOLE_VMWARE
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#define CONSOLE_VMWARE ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_TUI )
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#endif
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/** VMware logfile console GuestRPC channel */
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static int vmconsole_channel;
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/** VMware logfile console line buffer */
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static struct {
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char prefix[4];
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char message[VMCONSOLE_BUFSIZE];
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} vmconsole_buffer = {
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.prefix = "log ",
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};
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/** VMware logfile console ANSI escape sequence handlers */
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static struct ansiesc_handler vmconsole_handlers[] = {
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{ 0, NULL }
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};
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/** VMware logfile line console */
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static struct line_console vmconsole_line = {
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.buffer = vmconsole_buffer.message,
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.len = sizeof ( vmconsole_buffer.message ),
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.ctx = {
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.handlers = vmconsole_handlers,
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},
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};
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/** VMware logfile console recursion marker */
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static int vmconsole_entered;
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/**
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* Print a character to VMware logfile console
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*
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* @v character Character to be printed
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*/
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static void vmconsole_putchar ( int character ) {
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int rc;
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/* Ignore if we are already mid-logging */
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if ( vmconsole_entered )
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return;
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/* Fill line buffer */
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if ( line_putchar ( &vmconsole_line, character ) == 0 )
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return;
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/* Guard against re-entry */
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vmconsole_entered = 1;
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/* Send log message */
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if ( ( rc = guestrpc_command ( vmconsole_channel,
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vmconsole_buffer.prefix, NULL, 0 ) ) <0){
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DBG ( "VMware console could not send log message: %s\n",
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strerror ( rc ) );
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}
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/* Clear re-entry flag */
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vmconsole_entered = 0;
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}
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/** VMware logfile console driver */
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struct console_driver vmconsole __console_driver = {
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.putchar = vmconsole_putchar,
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.disabled = CONSOLE_DISABLED,
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.usage = CONSOLE_VMWARE,
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};
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/**
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* Initialise VMware logfile console
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*
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*/
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static void vmconsole_init ( void ) {
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int rc;
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/* Attempt to open console */
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vmconsole_channel = guestrpc_open();
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if ( vmconsole_channel < 0 ) {
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rc = vmconsole_channel;
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DBG ( "VMware console could not be initialised: %s\n",
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strerror ( rc ) );
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return;
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}
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/* Mark console as available */
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vmconsole.disabled = 0;
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}
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/**
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* VMware logfile console initialisation function
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*/
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struct init_fn vmconsole_init_fn __init_fn ( INIT_CONSOLE ) = {
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.initialise = vmconsole_init,
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};
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