1 /*	$OpenBSD: privsep.h,v 1.5 2007/02/13 21:54:22 stevesk Exp $ */
2 
3 /*
4  * Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
15  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
16  * OF OR IN CONNECTION WITH THE USE, ABUSE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/types.h>
20 
21 struct buf {
22 	u_char			*buf;
23 	size_t			 size;
24 	size_t			 wpos;
25 	size_t			 rpos;
26 };
27 
28 enum imsg_code {
29 	IMSG_NONE,
30 	IMSG_SCRIPT_INIT,
31 	IMSG_SCRIPT_WRITE_PARAMS,
32 	IMSG_SCRIPT_GO,
33 	IMSG_SCRIPT_GO_RET
34 };
35 
36 struct imsg_hdr {
37 	enum imsg_code	code;
38 	size_t		len;
39 };
40 
41 struct buf	*buf_open(size_t);
42 void		 buf_add(struct buf *, void *, size_t);
43 void		 buf_close(int, struct buf *);
44 void		 buf_read(int, void *, size_t);
45 void		 dispatch_imsg(int);
46