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Annotation of src/usr.bin/compress/compress.h, Revision 1.16

1.16    ! jmc         1: /*     $OpenBSD: compress.h,v 1.15 2022/10/22 14:41:27 millert Exp $   */
1.1       mickey      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:  *
1.3       mickey     16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1.1       mickey     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:
1.8       otto       30: #include <sys/stat.h>
                     31:
1.6       millert    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:
1.3       mickey     40: /*
1.16    ! jmc        41:  * making it any bigger does not affect performance very much.
1.3       mickey     42:  * actually this value is just a little bit better than 8192.
                     43:  */
1.1       mickey     44: #define Z_BUFSIZE 16384
1.9       sobrado    45:
1.10      sobrado    46: enum program_mode {
1.11      sobrado    47:        MODE_COMP,
                     48:        MODE_DECOMP,
                     49:        MODE_CAT
1.14      mortimer   50: };
1.1       mickey     51:
1.6       millert    52: /*
                     53:  * exit codes for compress
                     54:  */
                     55: #define        SUCCESS 0
                     56: #define        FAILURE 1
                     57: #define        WARNING 2
                     58:
1.7       tedu       59: extern char null_magic[];
1.3       mickey     60:
1.13      tedu       61: extern void *z_ropen(int, char *, int);
                     62: extern void *z_wopen(int, char *, int, u_int32_t);
1.2       millert    63: extern FILE *zopen(const char *, const char *,int);
                     64: extern int zread(void *, char *, int);
                     65: extern int zwrite(void *, const char *, int);
1.8       otto       66: extern int z_close(void *, struct z_info *, const char *, struct stat *);
1.6       millert    67:
1.13      tedu       68: extern void *gz_ropen(int, char *, int);
                     69: extern void *gz_wopen(int, char *, int, u_int32_t);
1.2       millert    70: extern int gz_read(void *, char *, int);
                     71: extern int gz_write(void *, const char *, int);
1.8       otto       72: extern int gz_close(void *, struct z_info *, const char *, struct stat *);
1.2       millert    73: extern int gz_flush(void *, int);
1.15      millert    74:
                     75: extern void *zip_ropen(int, char *, int);
                     76: extern int zip_read(void *, char *, int);
                     77: extern int zip_close(void *, struct z_info *, const char *, struct stat *);
1.3       mickey     78:
1.13      tedu       79: extern void *null_ropen(int, char *, int);
                     80: extern void *null_wopen(int, char *, int, u_int32_t);
1.7       tedu       81: extern int null_read(void *, char *, int);
                     82: extern int null_write(void *, const char *, int);
1.8       otto       83: extern int null_close(void *, struct z_info *, const char *, struct stat *);
1.7       tedu       84: extern int null_flush(void *, int);
1.8       otto       85:
                     86: extern void setfile(const char *, int, struct stat *);