1 /*- 2 * Copyright (c) 2002-2005 MAEKAWA Masahide <maekawa@cvsync.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef __RDIFF_H__ 31 #define __RDIFF_H__ 32 33 struct hash_args; 34 struct mux; 35 36 #define RDIFF_MIN_BLOCKSIZE 512 37 #define RDIFF_MAX_BLOCKSIZE 65536 38 #define RDIFF_NBLOCKS 128 39 40 #define RDIFF_CMD_EOF 0x00 41 #define RDIFF_CMD_COPY 0x01 42 #define RDIFF_CMD_DATA 0x02 43 44 #define RDIFF_MAXCMDLEN 13 45 46 #define RDIFF_WEAK_LOW(x) ((uint16_t)(x)) 47 #define RDIFF_WEAK_HIGH(x) ((uint16_t)((x) >> 16)) 48 49 uint32_t rdiff_weak(const uint8_t *, size_t); 50 uint8_t *rdiff_search(uint8_t *, uint8_t *, uint32_t, size_t, uint32_t, 51 uint8_t *, const struct hash_args *); 52 53 bool rdiff_copy(struct mux *, uint8_t, off_t, size_t); 54 bool rdiff_data(struct mux *, uint8_t, const void *, size_t); 55 bool rdiff_eof(struct mux *, uint8_t); 56 57 #endif /* __RDIFF_H__ */ 58