/* * *  BlueZ - Bluetooth protocol stack for Linux * *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com> *  Copyright (C) 2002-2008  Marcel Holtmann <marcel@holtmann.org> * * *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA * */#include <sys/types.h>#include <errno.h>#include <signal.h>#ifndef min#define min(a,b)    ( (a)<(b) ? (a):(b) )#endif/* IO cancelation */extern volatile sig_atomic_t __io_canceled;static inline void io_init(void){	__io_canceled = 0;}static inline void io_cancel(void){	__io_canceled = 1;}/* Read exactly len bytes (Signal safe)*/static inline int read_n(int fd, char *buf, int len){	register int t = 0, w;	while (!__io_canceled && len > 0) {		if ((w = read(fd, buf, len)) < 0) {			if (errno == EINTR || errno == EAGAIN)				continue;			return -1;		}		if (!w)			return 0;		len -= w;		buf += w;		t += w;	}	return t;}/* Write exactly len bytes (Signal safe)*/static inline int write_n(int fd, char *buf, int len){	register int t = 0, w;	while (!__io_canceled && len > 0) {		if ((w = write(fd, buf, len)) < 0) {			if (errno == EINTR || errno == EAGAIN)				continue;			return -1;		}		if (!w)			return 0;		len -= w;		buf += w;		t += w;	}	return t;}int ms_dun(int fd, int server, int timeo);