common.h revision 1.1.2.2
1 1.1.2.2 tls /* $NetBSD: common.h,v 1.1.2.2 2013/06/23 06:29:02 tls Exp $ */ 2 1.1.2.2 tls 3 1.1.2.2 tls /*- 4 1.1.2.2 tls * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.1.2.2 tls * All rights reserved. 6 1.1.2.2 tls * 7 1.1.2.2 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 tls * by Taylor R. Campbell. 9 1.1.2.2 tls * 10 1.1.2.2 tls * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 tls * modification, are permitted provided that the following conditions 12 1.1.2.2 tls * are met: 13 1.1.2.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 tls * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 tls * documentation and/or other materials provided with the distribution. 18 1.1.2.2 tls * 19 1.1.2.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.2.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.2.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.2.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.2.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.2.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.2.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.2.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.2.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.2.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.2.2 tls * POSSIBILITY OF SUCH DAMAGE. 30 1.1.2.2 tls */ 31 1.1.2.2 tls 32 1.1.2.2 tls #ifndef VNDCOMPRESS_COMMON_H 33 1.1.2.2 tls #define VNDCOMPRESS_COMMON_H 34 1.1.2.2 tls 35 1.1.2.2 tls #include <sys/cdefs.h> 36 1.1.2.2 tls #include <sys/param.h> 37 1.1.2.2 tls 38 1.1.2.2 tls #include <limits.h> 39 1.1.2.2 tls #include <stdint.h> 40 1.1.2.2 tls 41 1.1.2.2 tls #ifndef __type_fit 42 1.1.2.2 tls 43 1.1.2.2 tls /* XXX Cruft from HEAD. */ 44 1.1.2.2 tls 45 1.1.2.2 tls #define __type_mask(t) (/*LINTED*/sizeof(t) < sizeof(intmax_t) ? \ 46 1.1.2.2 tls (~((1ULL << (sizeof(t) * NBBY)) - 1)) : 0ULL) 47 1.1.2.2 tls 48 1.1.2.2 tls #define __zeroll() (0LL) 49 1.1.2.2 tls #define __negative_p(x) ((x) < 0) 50 1.1.2.2 tls 51 1.1.2.2 tls #define __type_min_s(t) ((t)((1ULL << (sizeof(t) * NBBY - 1)))) 52 1.1.2.2 tls #define __type_max_s(t) ((t)~((1ULL << (sizeof(t) * NBBY - 1)))) 53 1.1.2.2 tls #define __type_min_u(t) ((t)0ULL) 54 1.1.2.2 tls #define __type_max_u(t) ((t)~0ULL) 55 1.1.2.2 tls #define __type_is_signed(t) (/*LINTED*/__type_min_s(t) + (t)1 < (t)1) 56 1.1.2.2 tls #define __type_min(t) (__type_is_signed(t) ? __type_min_s(t) : __type_min_u(t)) 57 1.1.2.2 tls #define __type_max(t) (__type_is_signed(t) ? __type_max_s(t) : __type_max_u(t)) 58 1.1.2.2 tls 59 1.1.2.2 tls 60 1.1.2.2 tls #define __type_fit_u(t, a) (/*LINTED*/sizeof(t) < sizeof(intmax_t) ? \ 61 1.1.2.2 tls (((a) & __type_mask(t)) == 0) : !__negative_p(a)) 62 1.1.2.2 tls 63 1.1.2.2 tls #define __type_fit_s(t, a) (/*LINTED*/__negative_p(a) ? \ 64 1.1.2.2 tls ((intmax_t)((a) + __zeroll()) >= (intmax_t)__type_min_s(t)) : \ 65 1.1.2.2 tls ((intmax_t)((a) + __zeroll()) <= (intmax_t)__type_max_s(t))) 66 1.1.2.2 tls 67 1.1.2.2 tls /* 68 1.1.2.2 tls * return true if value 'a' fits in type 't' 69 1.1.2.2 tls */ 70 1.1.2.2 tls #define __type_fit(t, a) (__type_is_signed(t) ? \ 71 1.1.2.2 tls __type_fit_s(t, a) : __type_fit_u(t, a)) 72 1.1.2.2 tls 73 1.1.2.2 tls #endif 74 1.1.2.2 tls 75 1.1.2.2 tls /* XXX urk */ 76 1.1.2.2 tls #ifndef OFF_MAX 77 1.1.2.2 tls #define OFF_MAX __type_max(off_t) 78 1.1.2.2 tls #endif 79 1.1.2.2 tls 80 1.1.2.2 tls /* XXX Why is this kernel-only? */ 81 1.1.2.2 tls #define SET(t, f) ((t) |= (f)) 82 1.1.2.2 tls #define CLR(t, f) ((t) &= ~(f)) 83 1.1.2.2 tls #define ISSET(t, f) ((t) & (f)) 84 1.1.2.2 tls 85 1.1.2.2 tls /* 86 1.1.2.2 tls * We require: 87 1.1.2.2 tls * 88 1.1.2.2 tls * 0 < blocksize (duh) 89 1.1.2.2 tls * blocksize % DEV_BSIZE == 0 (for kernel use) 90 1.1.2.2 tls * 91 1.1.2.2 tls * blocksize <= UINT32_MAX (per the format) 92 1.1.2.2 tls * blocksize*2 <= SIZE_MAX (for a compression buffer) 93 1.1.2.2 tls * blocksize*2 <= ULONG_MAX (for zlib API) 94 1.1.2.2 tls */ 95 1.1.2.2 tls #define MIN_BLOCKSIZE DEV_BSIZE 96 1.1.2.2 tls #define DEF_BLOCKSIZE 0x10000 97 1.1.2.2 tls #define MAX_BLOCKSIZE \ 98 1.1.2.2 tls rounddown(MIN(UINT32_MAX, (MIN(SIZE_MAX, ULONG_MAX) / 2)), \ 99 1.1.2.2 tls MIN_BLOCKSIZE) 100 1.1.2.2 tls 101 1.1.2.2 tls /* 102 1.1.2.2 tls * We require: 103 1.1.2.2 tls * 104 1.1.2.2 tls * n_offsets * sizeof(uint64_t) <= SIZE_MAX (array of 64-bit offsets) 105 1.1.2.2 tls * n_blocks = (n_offsets + 1) (extra offset to set last block end) 106 1.1.2.2 tls * n_blocks <= UINT32_MAX (per the format) 107 1.1.2.2 tls * n_offsets <= UINT32_MAX (for the sake of simplicity) 108 1.1.2.2 tls */ 109 1.1.2.2 tls #define MAX_N_BLOCKS \ 110 1.1.2.2 tls (MIN(UINT32_MAX, (SIZE_MAX / sizeof(uint64_t))) - 1) 111 1.1.2.2 tls #define MAX_N_OFFSETS (MAX_N_BLOCKS + 1) 112 1.1.2.2 tls 113 1.1.2.2 tls struct cloop2_header { 114 1.1.2.2 tls char cl2h_magic[128]; 115 1.1.2.2 tls uint32_t cl2h_blocksize; 116 1.1.2.2 tls uint32_t cl2h_n_blocks; 117 1.1.2.2 tls } __packed; 118 1.1.2.2 tls 119 1.1.2.2 tls #define CLOOP2_OFFSET_TABLE_OFFSET 136 120 1.1.2.2 tls 121 1.1.2.2 tls struct options { 122 1.1.2.2 tls int flags; 123 1.1.2.2 tls #define FLAG_c 0x01 /* Compress */ 124 1.1.2.2 tls #define FLAG_d 0x02 /* Decompress */ 125 1.1.2.2 tls #define FLAG_p 0x04 /* Partial */ 126 1.1.2.2 tls #define FLAG_r 0x08 /* Restart */ 127 1.1.2.2 tls #define FLAG_s 0x10 /* block Size */ 128 1.1.2.2 tls #define FLAG_R 0x20 /* abort on Restart failure */ 129 1.1.2.2 tls #define FLAG_k 0x40 /* checKpoint blocks */ 130 1.1.2.2 tls #define FLAG_l 0x80 /* Length of input */ 131 1.1.2.2 tls uint32_t blocksize; 132 1.1.2.2 tls uint32_t end_block; /* end for partial transfer */ 133 1.1.2.2 tls uint32_t checkpoint_blocks; /* blocks before checkpoint */ 134 1.1.2.2 tls uint64_t length; /* length of image in bytes */ 135 1.1.2.2 tls }; 136 1.1.2.2 tls 137 1.1.2.2 tls int vndcompress(int, char **, const struct options *); 138 1.1.2.2 tls int vnduncompress(int, char **, const struct options *); 139 1.1.2.2 tls void usage(void) __dead; 140 1.1.2.2 tls 141 1.1.2.2 tls static const char cloop2_magic[] = "\ 142 1.1.2.2 tls #!/bin/sh\n\ 143 1.1.2.2 tls #V2.0 Format\n\ 144 1.1.2.2 tls insmod cloop.o file=$0 && mount -r -t iso9660 /dev/cloop $1\n\ 145 1.1.2.2 tls exit $?\n\ 146 1.1.2.2 tls "; 147 1.1.2.2 tls 148 1.1.2.2 tls #endif /* VNDCOMPRESS_COMMON_H */ 149
Indexes created Sat Oct 25 01:09:55 GMT 2025