2 * Copyright (c) 2000, 2001 Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #ifndef _SYS_MCHAIN_H_
35 #define _SYS_MCHAIN_H_
40 * Type of copy for mb_{put|get}_mem()
42 #define MB_MSYSTEM 0 /* use bcopy() */
43 #define MB_MUSER 1 /* use copyin()/copyout() */
44 #define MB_MINLINE 2 /* use an inline copy loop */
45 #define MB_MZERO 3 /* bzero(), mb_put_mem only */
46 #define MB_MCUSTOM 4 /* use an user defined function */
51 typedef int mb_copy_t(struct mbchain *mbp, c_caddr_t src, caddr_t dst,
52 size_t *srclen, size_t *dstlen);
55 struct mbuf * mb_top; /* head of mbufs chain */
56 struct mbuf * mb_cur; /* current mbuf */
57 int mb_mleft; /* free space in the current mbuf */
58 int mb_count; /* total number of bytes */
59 mb_copy_t * mb_copy; /* user defined copy function */
60 void * mb_udata; /* user data */
64 struct mbuf * md_top; /* head of mbufs chain */
65 struct mbuf * md_cur; /* current mbuf */
66 u_char * md_pos; /* offset in the current mbuf */
69 int mb_init(struct mbchain *mbp);
70 void mb_initm(struct mbchain *mbp, struct mbuf *m);
71 void mb_done(struct mbchain *mbp);
72 struct mbuf *mb_detach(struct mbchain *mbp);
73 int mb_fixhdr(struct mbchain *mbp);
74 caddr_t mb_reserve(struct mbchain *mbp, int size);
76 int mb_put_uint8(struct mbchain *mbp, u_int8_t x);
77 int mb_put_uint16be(struct mbchain *mbp, u_int16_t x);
78 int mb_put_uint16le(struct mbchain *mbp, u_int16_t x);
79 int mb_put_uint32be(struct mbchain *mbp, u_int32_t x);
80 int mb_put_uint32le(struct mbchain *mbp, u_int32_t x);
81 int mb_put_int64be(struct mbchain *mbp, int64_t x);
82 int mb_put_int64le(struct mbchain *mbp, int64_t x);
83 int mb_put_mem(struct mbchain *mbp, c_caddr_t source, int size, int type);
84 int mb_put_mbuf(struct mbchain *mbp, struct mbuf *m);
85 int mb_put_uio(struct mbchain *mbp, struct uio *uiop, int size);
87 int md_init(struct mdchain *mdp);
88 void md_initm(struct mdchain *mbp, struct mbuf *m);
89 void md_done(struct mdchain *mdp);
90 void md_append_record(struct mdchain *mdp, struct mbuf *top);
91 int md_next_record(struct mdchain *mdp);
92 int md_get_uint8(struct mdchain *mdp, u_int8_t *x);
93 int md_get_uint16(struct mdchain *mdp, u_int16_t *x);
94 int md_get_uint16le(struct mdchain *mdp, u_int16_t *x);
95 int md_get_uint16be(struct mdchain *mdp, u_int16_t *x);
96 int md_get_uint32(struct mdchain *mdp, u_int32_t *x);
97 int md_get_uint32be(struct mdchain *mdp, u_int32_t *x);
98 int md_get_uint32le(struct mdchain *mdp, u_int32_t *x);
99 int md_get_int64(struct mdchain *mdp, int64_t *x);
100 int md_get_int64be(struct mdchain *mdp, int64_t *x);
101 int md_get_int64le(struct mdchain *mdp, int64_t *x);
102 int md_get_mem(struct mdchain *mdp, caddr_t target, int size, int type);
103 int md_get_mbuf(struct mdchain *mdp, int size, struct mbuf **m);
104 int md_get_uio(struct mdchain *mdp, struct uio *uiop, int size);
106 #endif /* ifdef _KERNEL */
108 #endif /* !_SYS_MCHAIN_H_ */