41f1dccceb
bug fixes by Kuan-Chung Chiu <buganini at gmail dot com>. Tested by me in production for several days at work.
104 lines
4.2 KiB
C
104 lines
4.2 KiB
C
/*-
|
|
* Copyright (c) 2000, 2001 Boris Popov
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _SYS_MCHAIN_H_
|
|
#define _SYS_MCHAIN_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* Type of copy for mb_{put|get}_mem()
|
|
*/
|
|
#define MB_MSYSTEM 0 /* use bcopy() */
|
|
#define MB_MUSER 1 /* use copyin()/copyout() */
|
|
#define MB_MINLINE 2 /* use an inline copy loop */
|
|
#define MB_MZERO 3 /* bzero(), mb_put_mem only */
|
|
#define MB_MCUSTOM 4 /* use an user defined function */
|
|
|
|
struct mbuf;
|
|
struct mbchain;
|
|
|
|
typedef int mb_copy_t(struct mbchain *mbp, c_caddr_t src, caddr_t dst,
|
|
size_t *srclen, size_t *dstlen);
|
|
|
|
struct mbchain {
|
|
struct mbuf * mb_top; /* head of mbufs chain */
|
|
struct mbuf * mb_cur; /* current mbuf */
|
|
int mb_mleft; /* free space in the current mbuf */
|
|
int mb_count; /* total number of bytes */
|
|
mb_copy_t * mb_copy; /* user defined copy function */
|
|
void * mb_udata; /* user data */
|
|
};
|
|
|
|
struct mdchain {
|
|
struct mbuf * md_top; /* head of mbufs chain */
|
|
struct mbuf * md_cur; /* current mbuf */
|
|
u_char * md_pos; /* offset in the current mbuf */
|
|
};
|
|
|
|
int mb_init(struct mbchain *mbp);
|
|
void mb_initm(struct mbchain *mbp, struct mbuf *m);
|
|
void mb_done(struct mbchain *mbp);
|
|
struct mbuf *mb_detach(struct mbchain *mbp);
|
|
int mb_fixhdr(struct mbchain *mbp);
|
|
caddr_t mb_reserve(struct mbchain *mbp, int size);
|
|
|
|
int mb_put_padbyte(struct mbchain *mbp);
|
|
int mb_put_uint8(struct mbchain *mbp, u_int8_t x);
|
|
int mb_put_uint16be(struct mbchain *mbp, u_int16_t x);
|
|
int mb_put_uint16le(struct mbchain *mbp, u_int16_t x);
|
|
int mb_put_uint32be(struct mbchain *mbp, u_int32_t x);
|
|
int mb_put_uint32le(struct mbchain *mbp, u_int32_t x);
|
|
int mb_put_int64be(struct mbchain *mbp, int64_t x);
|
|
int mb_put_int64le(struct mbchain *mbp, int64_t x);
|
|
int mb_put_mem(struct mbchain *mbp, c_caddr_t source, int size, int type);
|
|
int mb_put_mbuf(struct mbchain *mbp, struct mbuf *m);
|
|
int mb_put_uio(struct mbchain *mbp, struct uio *uiop, int size);
|
|
|
|
int md_init(struct mdchain *mdp);
|
|
void md_initm(struct mdchain *mbp, struct mbuf *m);
|
|
void md_done(struct mdchain *mdp);
|
|
void md_append_record(struct mdchain *mdp, struct mbuf *top);
|
|
int md_next_record(struct mdchain *mdp);
|
|
int md_get_uint8(struct mdchain *mdp, u_int8_t *x);
|
|
int md_get_uint16(struct mdchain *mdp, u_int16_t *x);
|
|
int md_get_uint16le(struct mdchain *mdp, u_int16_t *x);
|
|
int md_get_uint16be(struct mdchain *mdp, u_int16_t *x);
|
|
int md_get_uint32(struct mdchain *mdp, u_int32_t *x);
|
|
int md_get_uint32be(struct mdchain *mdp, u_int32_t *x);
|
|
int md_get_uint32le(struct mdchain *mdp, u_int32_t *x);
|
|
int md_get_int64(struct mdchain *mdp, int64_t *x);
|
|
int md_get_int64be(struct mdchain *mdp, int64_t *x);
|
|
int md_get_int64le(struct mdchain *mdp, int64_t *x);
|
|
int md_get_mem(struct mdchain *mdp, caddr_t target, int size, int type);
|
|
int md_get_mbuf(struct mdchain *mdp, int size, struct mbuf **m);
|
|
int md_get_uio(struct mdchain *mdp, struct uio *uiop, int size);
|
|
|
|
#endif /* ifdef _KERNEL */
|
|
|
|
#endif /* !_SYS_MCHAIN_H_ */
|