1 /* $OpenBSD: compress.h,v 1.11 2008/08/07 17:37:37 sobrado Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 #include <sys/stat.h> 31 32 struct z_info { 33 u_int32_t mtime; /* timestamp */ 34 u_int32_t crc; /* crc */ 35 u_int32_t hlen; /* header length */ 36 u_int64_t total_in; /* # bytes in */ 37 u_int64_t total_out; /* # bytes out */ 38 }; 39 40 /* 41 * making it any bigger does not affect perfomance very much. 42 * actually this value is just a little bit better than 8192. 43 */ 44 #define Z_BUFSIZE 16384 45 46 enum program_mode { 47 MODE_COMP, 48 MODE_DECOMP, 49 MODE_CAT 50 } pmode; 51 52 /* 53 * exit codes for compress 54 */ 55 #define SUCCESS 0 56 #define FAILURE 1 57 #define WARNING 2 58 59 extern const char main_rcsid[], z_rcsid[], gz_rcsid[], pkzip_rcsid[], 60 pack_rcsid[], lzh_rcsid[], null_rcsid[]; 61 extern char null_magic[]; 62 63 extern void *z_open(int, const char *, char *, int, u_int32_t, int); 64 extern FILE *zopen(const char *, const char *,int); 65 extern int zread(void *, char *, int); 66 extern int zwrite(void *, const char *, int); 67 extern int z_close(void *, struct z_info *, const char *, struct stat *); 68 69 70 extern void *gz_open(int, const char *, char *, int, u_int32_t, int); 71 extern int gz_read(void *, char *, int); 72 extern int gz_write(void *, const char *, int); 73 extern int gz_close(void *, struct z_info *, const char *, struct stat *); 74 extern int gz_flush(void *, int); 75 76 extern void *lzh_open(int, const char *, char *, int, u_int32_t, int); 77 extern int lzh_read(void *, char *, int); 78 extern int lzh_write(void *, const char *, int); 79 extern int lzh_close(void *, struct z_info *); 80 extern int lzh_flush(void *, int); 81 82 extern void *null_open(int, const char *, char *, int, u_int32_t, int); 83 extern int null_read(void *, char *, int); 84 extern int null_write(void *, const char *, int); 85 extern int null_close(void *, struct z_info *, const char *, struct stat *); 86 extern int null_flush(void *, int); 87 88 extern void setfile(const char *, int, struct stat *); 89