hcidump.h

/* 
	HCIDump - HCI packet analyzer	
	Copyright (C) 2000-2001 Maxim Krasnyansky <maxk@qualcomm.com>

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License version 2 as
	published by the Free Software Foundation;

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
	IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY CLAIM,
	OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER
	RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
	NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
	USE OR PERFORMANCE OF THIS SOFTWARE.

	ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, COPYRIGHTS,
	TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS SOFTWARE IS DISCLAIMED.
*/

/*
 * $Id$
 */

/* Modes */
enum {
	PARSE,
	READ,
	WRITE
};

struct dump_hdr {
	__u16	len;
	__u8	in;
	__u8	pad;
	__u32	ts_sec;
	__u32   ts_usec;
} __attribute__ ((packed));
#define DUMP_HDR_SIZE (sizeof(struct dump_hdr))

#define SNAP_LEN HCI_MAX_FRAME_SIZE

static inline int read_n(int fd, char *buf, int len)
{
	register int t=0, w;

	while (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;
}   

static inline int write_n(int fd, char *buf, int len)
{
	register int t=0, w;

	while (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;
}