iPXE
log.c
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00001 /*
00002  * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017  * 02110-1301, USA.
00018  *
00019  * You can also choose to distribute this program under the terms of
00020  * the Unmodified Binary Distribution Licence (as given in the file
00021  * COPYING.UBDL), provided that you have satisfied its requirements.
00022  */
00023 
00024 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
00025 
00026 /** @file
00027  *
00028  * System logger
00029  *
00030  */
00031 
00032 #include <stdarg.h>
00033 #include <syslog.h>
00034 #include <ipxe/console.h>
00035 
00036 /**
00037  * Write message to system log
00038  *
00039  * @v fmt               Format string
00040  * @v args              Arguments
00041  */
00042 void log_vprintf ( const char *fmt, va_list args ) {
00043         int saved_usage;
00044 
00045         /* Mark console as in use for log messages */
00046         saved_usage = console_set_usage ( CONSOLE_USAGE_LOG );
00047 
00048         /* Print message */
00049         vprintf ( fmt, args );
00050 
00051         /* Restore console usage */
00052         console_set_usage ( saved_usage );
00053 }
00054 
00055 /**
00056  * Write message to system log
00057  *
00058  * @v fmt               Format string
00059  * @v ...               Arguments
00060  */
00061 void log_printf ( const char *fmt, ... ) {
00062         va_list args;
00063 
00064         va_start ( args, fmt );
00065         log_vprintf ( fmt, args );
00066         va_end ( args );
00067 }