debug.c

来自「一个收集所有最基本功能的函数库；所有的函数都是尽量短小和简单 使用 doxyge」· C语言 代码 · 共 69 行

/***************************************************************************
 *            debug.c
 *
 *  Mon May 21 18:06:46 2007
 *  Copyright  2007  kf701
 *  Email <kf701.ye AT gmail.com>
 ****************************************************************************/

/*
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include <libgen.h>
#include <stdarg.h>    
#include <time.h>    
#include <sys/types.h>
#include <sys/stat.h>
#include <syslog.h>

#include "kf701.h"

/**
 * @brief print and syslog routine
 *
 * Action as printf when run on fg
 * else as syslog when bg
 */
int sys_message(const char *fmt, ...) 
{
	va_list ap;
	char buf[128] , fd_path[64] , name[64];
	pid_t my_pid = getpid();
	
	sprintf(fd_path,"/proc/%d/exe",my_pid);
	bzero(name,sizeof(name));
	readlink( fd_path, name , sizeof(name) );
	memmove( name , basename(name) , strlen(basename(name))+1 );
	
	sprintf ( fd_path , "/proc/%d/fd/0" , my_pid);
	if ( readlink(fd_path,buf,sizeof(buf)) > 0 )
	{		
		if ( NULL == strstr(buf ,"/dev/null") )
		{            
			printf("%s: ", name); 
			va_start(ap,fmt);
			vprintf(fmt,ap);
			va_end(ap);	
			return 0;
		}
	}
	va_start(ap,fmt);
	vsnprintf(buf , sizeof(buf), fmt , ap );
	va_end(ap);
	syslog( LOG_DEBUG, "%s", buf );
	return 0;
}