3728855a0f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
188 lines
4.3 KiB
C
188 lines
4.3 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@gmail.com>
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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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// $Id: binstream.c,v 1.1 2006/07/05 10:47:54 ivoras Exp $
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/endian.h>
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#include <sys/param.h>
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#include <geom/virstor/binstream.h>
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/* "Open" a binary stream for reading */
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void
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bs_open(bin_stream_t * bs, void *data)
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{
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bs->data = (char *)data;
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bs->pos = 0;
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}
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/* "Reset" position in binary stream to zero */
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void
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bs_reset(bin_stream_t * bs)
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{
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bs->pos = 0;
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}
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/* Write a zero-terminated string; return next position */
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unsigned
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bs_write_str(bin_stream_t * bs, char *data)
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{
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int len = 0;
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do {
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*(bs->data + bs->pos + len) = *data;
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len++;
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} while (*(data++) != '\0');
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bs->pos += len;
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return bs->pos;
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}
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/* Write an arbitrary buffer; return next position */
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unsigned
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bs_write_buf(bin_stream_t * bs, char *data, unsigned data_size)
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{
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unsigned i;
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for (i = 0; i < data_size; i++)
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*(bs->data + bs->pos + i) = *(data + i);
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bs->pos += data_size;
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return bs->pos;
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}
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/* Write a 8bit uint; return next position. */
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unsigned
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bs_write_u8(bin_stream_t * bs, uint8_t data)
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{
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*((uint8_t *) (bs->data + bs->pos)) = data;
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return ++(bs->pos);
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}
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/* Write a 16bit uint; return next position. */
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unsigned
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bs_write_u16(bin_stream_t * bs, uint16_t data)
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{
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le16enc(bs->data + bs->pos, data);
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return (bs->pos += 2);
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}
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/* Write a 32bit uint; return next position. */
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unsigned
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bs_write_u32(bin_stream_t * bs, uint32_t data)
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{
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le32enc(bs->data + bs->pos, data);
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return (bs->pos += 4);
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}
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/* Write a 64bit uint; return next position. */
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unsigned
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bs_write_u64(bin_stream_t * bs, uint64_t data)
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{
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le64enc(bs->data + bs->pos, data);
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return (bs->pos += 8);
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}
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/* Read a 8bit uint & return it */
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uint8_t
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bs_read_u8(bin_stream_t * bs)
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{
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uint8_t data = *((uint8_t *) (bs->data + bs->pos));
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bs->pos++;
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return data;
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}
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/*
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* Read a null-terminated string from stream into a buffer; buf_size is size
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* of the buffer, including the final \0. Returns buf pointer or NULL if
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* garbage input.
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*/
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char*
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bs_read_str(bin_stream_t * bs, char *buf, unsigned buf_size)
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{
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unsigned len = 0;
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char *work_buf = buf;
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if (buf == NULL || buf_size < 1)
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return NULL;
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do {
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*work_buf = *(bs->data + bs->pos + len);
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} while (len++ < buf_size - 1 && *(work_buf++) != '\0');
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*(buf + buf_size - 1) = '\0';
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bs->pos += len;
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return buf;
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}
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/* Read an arbitrary buffer. */
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void
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bs_read_buf(bin_stream_t * bs, char *buf, unsigned buf_size)
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{
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unsigned i;
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for (i = 0; i < buf_size; i++)
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*(buf + i) = *(bs->data + bs->pos + i);
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bs->pos += buf_size;
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}
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/* Read a 16bit uint & return it */
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uint16_t
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bs_read_u16(bin_stream_t * bs)
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{
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uint16_t data = le16dec(bs->data + bs->pos);
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bs->pos += 2;
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return data;
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}
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/* Read a 32bit uint & return it */
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uint32_t
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bs_read_u32(bin_stream_t * bs)
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{
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uint32_t data = le32dec(bs->data + bs->pos);
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bs->pos += 4;
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return data;
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}
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/* Read a 64bit uint & return it */
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uint64_t
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bs_read_u64(bin_stream_t * bs)
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{
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uint64_t data = le64dec(bs->data + bs->pos);
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bs->pos += 8;
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return data;
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}
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