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