bsdiff.h (2146B)
1 #ifndef BSDIFF_H 2 #define BSDIFF_H 3 /*- 4 * Copyright 2003-2005 Colin Percival 5 * Copyright 2020 Stephen Gregoratto 6 * All rights reserved 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted providing that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 21 * 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, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifdef __GNUC__ 31 #define DEAD __attribute__ ((noreturn)) 32 #else 33 #define DEAD 34 #endif 35 36 #define MIN(x, y) (((x) < (y)) ? (x) : (y)) 37 38 struct bsdiff_header { 39 uint8_t magic[8]; 40 off_t ctrl_block_len; 41 off_t diff_block_len; 42 off_t new_file_len; 43 }; 44 45 void split(off_t *, off_t *, off_t, off_t, off_t); 46 void qsufsort(off_t *, off_t *, uint8_t *, off_t); 47 off_t matchlen(uint8_t *, off_t, uint8_t *, off_t); 48 off_t search(off_t *, uint8_t *, off_t, uint8_t *, off_t, off_t, 49 off_t, off_t *); 50 void offtout(off_t, uint8_t *); 51 off_t offtin(uint8_t *buf); 52 uint8_t * readfile(char *, off_t *, struct stat *); 53 54 DEAD void usage(void); 55 DEAD void cleanup_newfile(void); 56 void err_rm(const char *, ...); 57 void errx_rm(const char *, ...); 58 #endif /* BSDIFF_H */