src/libostree/bupsplit.h - main - githubmirror/ostree

src/libostree/bupsplit.h
53 строки2 KB
Colin Walters
tree-wide: Run clang-format
02 май 2023, 15:42
02 май 2023, 15:42453aed9
/*
 * Copyright 2011 Avery Pennarun. All rights reserved.
 *
 * (This license applies to bupsplit.c and bupsplit.h only.)
 *
 * 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 AVERY PENNARUN ``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 <COPYRIGHT HOLDER> 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.
 */
#ifndef __BUPSPLIT_H
#define __BUPSPLIT_H

#include <stdint.h>
#include <sys/types.h>

#define BUP_BLOBBITS (13)
#define BUP_BLOBSIZE (1 << BUP_BLOBBITS)
#define BUP_WINDOWBITS (7)
#define BUP_WINDOWSIZE (1 << (BUP_WINDOWBITS - 1))

#ifdef __cplusplus
extern "C"
{
#endif

  uint32_t bupsplit_sum (uint8_t *buf, size_t ofs, size_t len);
  int bupsplit_find_ofs (const unsigned char *buf, int len, int *bits);

#ifdef __cplusplus
}
#endif

#endif /* __BUPSPLIT_H */