93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 Ivan Voras <ivoras@freebsd.org>
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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 AUTHORS 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 AUTHORS 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/endian.h>
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#include <geom/virstor/g_virstor_md.h>
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#include <geom/virstor/binstream.h>
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/*
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* Encode data from g_virstor_metadata structure into a endian-independant
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* byte stream.
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*/
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void
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virstor_metadata_encode(struct g_virstor_metadata *md, unsigned char *data)
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{
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bin_stream_t bs;
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bs_open(&bs, data);
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bs_write_buf(&bs, md->md_magic, sizeof(md->md_magic));
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bs_write_u32(&bs, md->md_version);
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bs_write_buf(&bs, md->md_name, sizeof(md->md_name));
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bs_write_u64(&bs, md->md_virsize);
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bs_write_u32(&bs, md->md_chunk_size);
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bs_write_u32(&bs, md->md_id);
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bs_write_u16(&bs, md->md_count);
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bs_write_buf(&bs, md->provider, sizeof(md->provider));
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bs_write_u16(&bs, md->no);
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bs_write_u64(&bs, md->provsize);
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bs_write_u32(&bs, md->chunk_count);
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bs_write_u32(&bs, md->chunk_next);
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bs_write_u16(&bs, md->chunk_reserved);
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bs_write_u16(&bs, md->flags);
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}
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/*
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* Decode data from endian-independant byte stream into g_virstor_metadata
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* structure.
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*/
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void
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virstor_metadata_decode(unsigned char *data, struct g_virstor_metadata *md)
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{
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bin_stream_t bs;
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bs_open(&bs, (char *)(data));
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bs_read_buf(&bs, md->md_magic, sizeof(md->md_magic));
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md->md_version = bs_read_u32(&bs);
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bs_read_buf(&bs, md->md_name, sizeof(md->md_name));
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md->md_virsize = bs_read_u64(&bs);
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md->md_chunk_size = bs_read_u32(&bs);
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md->md_id = bs_read_u32(&bs);
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md->md_count = bs_read_u16(&bs);
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bs_read_buf(&bs, md->provider, sizeof(md->provider));
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md->no = bs_read_u16(&bs);
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md->provsize = bs_read_u64(&bs);
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md->chunk_count = bs_read_u32(&bs);
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md->chunk_next = bs_read_u32(&bs);
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md->chunk_reserved = bs_read_u16(&bs);
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md->flags = bs_read_u16(&bs);
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}
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