/* $OpenBSD: compress.h,v 1.7 2003/09/05 04:46:35 tedu Exp $ */ /* * Copyright (c) 1997 Michael Shalayeff * All rights reserved. * * 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 THE AUTHOR ``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 THE REGENTS 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. * */ struct z_info { u_int32_t mtime; /* timestamp */ u_int32_t crc; /* crc */ u_int32_t hlen; /* header length */ u_int64_t total_in; /* # bytes in */ u_int64_t total_out; /* # bytes out */ }; /* * making it any bigger does not affect perfomance very much. * actually this value is just a little bit better than 8192. */ #define Z_BUFSIZE 16384 /* * exit codes for compress */ #define SUCCESS 0 #define FAILURE 1 #define WARNING 2 extern const char main_rcsid[], z_rcsid[], gz_rcsid[], pkzip_rcsid[], pack_rcsid[], lzh_rcsid[], null_rcsid[]; extern char null_magic[]; extern void *z_open(int, const char *, char *, int, u_int32_t, int); extern FILE *zopen(const char *, const char *,int); extern int zread(void *, char *, int); extern int zwrite(void *, const char *, int); extern int z_close(void *, struct z_info *); extern void *gz_open(int, const char *, char *, int, u_int32_t, int); extern int gz_read(void *, char *, int); extern int gz_write(void *, const char *, int); extern int gz_close(void *, struct z_info *); extern int gz_flush(void *, int); extern void *lzh_open(int, const char *, char *, int, u_int32_t, int); extern int lzh_read(void *, char *, int); extern int lzh_write(void *, const char *, int); extern int lzh_close(void *, struct z_info *); extern int lzh_flush(void *, int); extern void *null_open(int, const char *, char *, int, u_int32_t, int); extern int null_read(void *, char *, int); extern int null_write(void *, const char *, int); extern int null_close(void *, struct z_info *); extern int null_flush(void *, int);