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1 | 13 | up20180614 | /*-
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2 | * Copyright (c) 2003-2007 Tim Kientzle
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | *
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14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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17 | * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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24 | *
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25 | * $FreeBSD: src/lib/libarchive/archive.h.in,v 1.50 2008/05/26 17:00:22 kientzle Exp $
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26 | */
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27 | |||
28 | #ifndef ARCHIVE_H_INCLUDED
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29 | #define ARCHIVE_H_INCLUDED
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30 | |||
31 | /*
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32 | * Note: archive.h is for use outside of libarchive; the configuration
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33 | * headers (config.h, archive_platform.h, etc.) are purely internal.
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34 | * Do NOT use HAVE_XXX configuration macros to control the behavior of
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35 | * this header! If you must conditionalize, use predefined compiler and/or
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36 | * platform macros.
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37 | */
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38 | #if defined(__BORLANDC__) && __BORLANDC__ >= 0x560 |
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39 | # define __LA_STDINT_H <stdint.h>
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40 | #elif !defined(__WATCOMC__) && !defined(_MSC_VER) && !defined(__INTERIX) && !defined(__BORLANDC__)
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41 | # define __LA_STDINT_H <inttypes.h>
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42 | #endif
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43 | |||
44 | #include <sys/stat.h> |
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45 | #include <sys/types.h> /* Linux requires this for off_t */ |
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46 | #ifdef __LA_STDINT_H
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47 | # include __LA_STDINT_H /* int64_t, etc. */ |
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48 | #endif
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49 | #include <stdio.h> /* For FILE * */ |
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50 | |||
51 | /* Get appropriate definitions of standard POSIX-style types. */
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52 | /* These should match the types used in 'struct stat' */
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53 | #if defined(_WIN32) && !defined(__CYGWIN__)
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54 | #define __LA_INT64_T __int64
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55 | # if defined(_SSIZE_T_DEFINED)
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56 | # define __LA_SSIZE_T ssize_t
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57 | # elif defined(_WIN64)
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58 | # define __LA_SSIZE_T __int64
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59 | # else
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60 | # define __LA_SSIZE_T long |
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61 | # endif
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62 | # if defined(__BORLANDC__)
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63 | # define __LA_UID_T uid_t
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64 | # define __LA_GID_T gid_t
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65 | # else
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66 | # define __LA_UID_T short |
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67 | # define __LA_GID_T short |
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68 | # endif
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69 | #else
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70 | #include <unistd.h> /* ssize_t, uid_t, and gid_t */ |
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71 | #define __LA_INT64_T int64_t
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72 | #define __LA_SSIZE_T ssize_t
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73 | #define __LA_UID_T uid_t
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74 | #define __LA_GID_T gid_t
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75 | #endif
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76 | |||
77 | /*
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78 | * On Windows, define LIBARCHIVE_STATIC if you're building or using a
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79 | * .lib. The default here assumes you're building a DLL. Only
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80 | * libarchive source should ever define __LIBARCHIVE_BUILD.
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81 | */
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82 | #if ((defined __WIN32__) || (defined _WIN32) || defined(__CYGWIN__)) && (!defined LIBARCHIVE_STATIC)
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83 | # ifdef __LIBARCHIVE_BUILD
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84 | # ifdef __GNUC__
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85 | # define __LA_DECL __attribute__((dllexport)) extern |
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86 | # else
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87 | # define __LA_DECL __declspec(dllexport)
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88 | # endif
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89 | # else
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90 | # ifdef __GNUC__
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91 | # define __LA_DECL __attribute__((dllimport)) extern |
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92 | # else
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93 | # define __LA_DECL __declspec(dllimport)
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94 | # endif
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95 | # endif
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96 | #else
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97 | /* Static libraries or non-Windows needs no special declaration. */
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98 | # define __LA_DECL
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99 | #endif
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100 | |||
101 | #ifdef __cplusplus
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102 | extern "C" { |
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103 | #endif
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104 | |||
105 | /*
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106 | * The version number is provided as both a macro and a function.
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107 | * The macro identifies the installed header; the function identifies
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108 | * the library version (which may not be the same if you're using a
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109 | * dynamically-linked version of the library). Of course, if the
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110 | * header and library are very different, you should expect some
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111 | * strangeness. Don't do that.
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112 | */
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113 | |||
114 | /*
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115 | * The version number is expressed as a single integer that makes it
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116 | * easy to compare versions at build time: for version a.b.c, the
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117 | * version number is printf("%d%03d%03d",a,b,c). For example, if you
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118 | * know your application requires version 2.12.108 or later, you can
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119 | * assert that ARCHIVE_VERSION >= 2012108.
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120 | *
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121 | * This single-number format was introduced with libarchive 1.9.0 in
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122 | * the libarchive 1.x family and libarchive 2.2.4 in the libarchive
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123 | * 2.x family. The following may be useful if you really want to do
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124 | * feature detection for earlier libarchive versions (which defined
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125 | * ARCHIVE_API_VERSION and ARCHIVE_API_FEATURE instead):
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126 | *
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127 | * #ifndef ARCHIVE_VERSION_NUMBER
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128 | * #define ARCHIVE_VERSION_NUMBER \
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129 | * (ARCHIVE_API_VERSION * 1000000 + ARCHIVE_API_FEATURE * 1000)
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130 | * #endif
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131 | */
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132 | #define ARCHIVE_VERSION_NUMBER 2008004 |
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133 | __LA_DECL int archive_version_number(void); |
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134 | |||
135 | /*
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136 | * Textual name/version of the library, useful for version displays.
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137 | */
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138 | #define ARCHIVE_VERSION_STRING "libarchive 2.8.4" |
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139 | __LA_DECL const char * archive_version_string(void); |
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140 | |||
141 | #if ARCHIVE_VERSION_NUMBER < 3000000 |
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142 | /*
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143 | * Deprecated; these are older names that will be removed in favor of
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144 | * the simpler definitions above.
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145 | */
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146 | #define ARCHIVE_VERSION_STAMP ARCHIVE_VERSION_NUMBER
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147 | __LA_DECL int archive_version_stamp(void); |
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148 | #define ARCHIVE_LIBRARY_VERSION ARCHIVE_VERSION_STRING
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149 | __LA_DECL const char * archive_version(void); |
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150 | #define ARCHIVE_API_VERSION (ARCHIVE_VERSION_NUMBER / 1000000) |
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151 | __LA_DECL int archive_api_version(void); |
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152 | #define ARCHIVE_API_FEATURE ((ARCHIVE_VERSION_NUMBER / 1000) % 1000) |
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153 | __LA_DECL int archive_api_feature(void); |
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154 | #endif
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155 | |||
156 | #if ARCHIVE_VERSION_NUMBER < 3000000 |
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157 | /* This should never have been here in the first place. */
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158 | /* Legacy of old tar assumptions, will be removed in libarchive 3.0. */
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159 | #define ARCHIVE_BYTES_PER_RECORD 512 |
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160 | #define ARCHIVE_DEFAULT_BYTES_PER_BLOCK 10240 |
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161 | #endif
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162 | |||
163 | /* Declare our basic types. */
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164 | struct archive;
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165 | struct archive_entry;
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166 | |||
167 | /*
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168 | * Error codes: Use archive_errno() and archive_error_string()
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169 | * to retrieve details. Unless specified otherwise, all functions
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170 | * that return 'int' use these codes.
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171 | */
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172 | #define ARCHIVE_EOF 1 /* Found end of archive. */ |
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173 | #define ARCHIVE_OK 0 /* Operation was successful. */ |
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174 | #define ARCHIVE_RETRY (-10) /* Retry might succeed. */ |
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175 | #define ARCHIVE_WARN (-20) /* Partial success. */ |
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176 | /* For example, if write_header "fails", then you can't push data. */
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177 | #define ARCHIVE_FAILED (-25) /* Current operation cannot complete. */ |
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178 | /* But if write_header is "fatal," then this archive is dead and useless. */
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179 | #define ARCHIVE_FATAL (-30) /* No more operations are possible. */ |
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180 | |||
181 | /*
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182 | * As far as possible, archive_errno returns standard platform errno codes.
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183 | * Of course, the details vary by platform, so the actual definitions
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184 | * here are stored in "archive_platform.h". The symbols are listed here
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185 | * for reference; as a rule, clients should not need to know the exact
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186 | * platform-dependent error code.
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187 | */
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188 | /* Unrecognized or invalid file format. */
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189 | /* #define ARCHIVE_ERRNO_FILE_FORMAT */
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190 | /* Illegal usage of the library. */
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191 | /* #define ARCHIVE_ERRNO_PROGRAMMER_ERROR */
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192 | /* Unknown or unclassified error. */
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193 | /* #define ARCHIVE_ERRNO_MISC */
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194 | |||
195 | /*
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196 | * Callbacks are invoked to automatically read/skip/write/open/close the
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197 | * archive. You can provide your own for complex tasks (like breaking
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198 | * archives across multiple tapes) or use standard ones built into the
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199 | * library.
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200 | */
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201 | |||
202 | /* Returns pointer and size of next block of data from archive. */
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203 | typedef __LA_SSIZE_T archive_read_callback(struct archive *, |
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204 | void *_client_data, const void **_buffer); |
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205 | |||
206 | /* Skips at most request bytes from archive and returns the skipped amount */
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207 | #if ARCHIVE_VERSION_NUMBER < 2000000 |
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208 | /* Libarchive 1.0 used ssize_t for the return, which is only 32 bits
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209 | * on most 32-bit platforms; not large enough. */
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210 | typedef __LA_SSIZE_T archive_skip_callback(struct archive *, |
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211 | void *_client_data, size_t request);
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212 | #elif ARCHIVE_VERSION_NUMBER < 3000000 |
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213 | /* Libarchive 2.0 used off_t here, but that is a bad idea on Linux and a
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214 | * few other platforms where off_t varies with build settings. */
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215 | typedef off_t archive_skip_callback(struct archive *, |
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216 | void *_client_data, off_t request);
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217 | #else
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218 | /* Libarchive 3.0 uses int64_t here, which is actually guaranteed to be
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219 | * 64 bits on every platform. */
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220 | typedef __LA_INT64_T archive_skip_callback(struct archive *, |
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221 | void *_client_data, __LA_INT64_T request);
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222 | #endif
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223 | |||
224 | /* Returns size actually written, zero on EOF, -1 on error. */
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225 | typedef __LA_SSIZE_T archive_write_callback(struct archive *, |
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226 | void *_client_data,
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227 | const void *_buffer, size_t _length); |
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228 | |||
229 | #if ARCHIVE_VERSION_NUMBER < 3000000 |
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230 | /* Open callback is actually never needed; remove it in libarchive 3.0. */
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231 | typedef int archive_open_callback(struct archive *, void *_client_data); |
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232 | #endif
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233 | |||
234 | typedef int archive_close_callback(struct archive *, void *_client_data); |
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235 | |||
236 | /*
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237 | * Codes for archive_compression.
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238 | */
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239 | #define ARCHIVE_COMPRESSION_NONE 0 |
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240 | #define ARCHIVE_COMPRESSION_GZIP 1 |
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241 | #define ARCHIVE_COMPRESSION_BZIP2 2 |
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242 | #define ARCHIVE_COMPRESSION_COMPRESS 3 |
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243 | #define ARCHIVE_COMPRESSION_PROGRAM 4 |
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244 | #define ARCHIVE_COMPRESSION_LZMA 5 |
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245 | #define ARCHIVE_COMPRESSION_XZ 6 |
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246 | #define ARCHIVE_COMPRESSION_UU 7 |
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247 | #define ARCHIVE_COMPRESSION_RPM 8 |
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248 | |||
249 | /*
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250 | * Codes returned by archive_format.
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251 | *
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252 | * Top 16 bits identifies the format family (e.g., "tar"); lower
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253 | * 16 bits indicate the variant. This is updated by read_next_header.
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254 | * Note that the lower 16 bits will often vary from entry to entry.
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255 | * In some cases, this variation occurs as libarchive learns more about
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256 | * the archive (for example, later entries might utilize extensions that
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257 | * weren't necessary earlier in the archive; in this case, libarchive
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258 | * will change the format code to indicate the extended format that
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259 | * was used). In other cases, it's because different tools have
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260 | * modified the archive and so different parts of the archive
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261 | * actually have slightly different formts. (Both tar and cpio store
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262 | * format codes in each entry, so it is quite possible for each
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263 | * entry to be in a different format.)
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264 | */
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265 | #define ARCHIVE_FORMAT_BASE_MASK 0xff0000 |
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266 | #define ARCHIVE_FORMAT_CPIO 0x10000 |
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267 | #define ARCHIVE_FORMAT_CPIO_POSIX (ARCHIVE_FORMAT_CPIO | 1) |
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268 | #define ARCHIVE_FORMAT_CPIO_BIN_LE (ARCHIVE_FORMAT_CPIO | 2) |
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269 | #define ARCHIVE_FORMAT_CPIO_BIN_BE (ARCHIVE_FORMAT_CPIO | 3) |
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270 | #define ARCHIVE_FORMAT_CPIO_SVR4_NOCRC (ARCHIVE_FORMAT_CPIO | 4) |
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271 | #define ARCHIVE_FORMAT_CPIO_SVR4_CRC (ARCHIVE_FORMAT_CPIO | 5) |
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272 | #define ARCHIVE_FORMAT_SHAR 0x20000 |
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273 | #define ARCHIVE_FORMAT_SHAR_BASE (ARCHIVE_FORMAT_SHAR | 1) |
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274 | #define ARCHIVE_FORMAT_SHAR_DUMP (ARCHIVE_FORMAT_SHAR | 2) |
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275 | #define ARCHIVE_FORMAT_TAR 0x30000 |
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276 | #define ARCHIVE_FORMAT_TAR_USTAR (ARCHIVE_FORMAT_TAR | 1) |
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277 | #define ARCHIVE_FORMAT_TAR_PAX_INTERCHANGE (ARCHIVE_FORMAT_TAR | 2) |
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278 | #define ARCHIVE_FORMAT_TAR_PAX_RESTRICTED (ARCHIVE_FORMAT_TAR | 3) |
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279 | #define ARCHIVE_FORMAT_TAR_GNUTAR (ARCHIVE_FORMAT_TAR | 4) |
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280 | #define ARCHIVE_FORMAT_ISO9660 0x40000 |
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281 | #define ARCHIVE_FORMAT_ISO9660_ROCKRIDGE (ARCHIVE_FORMAT_ISO9660 | 1) |
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282 | #define ARCHIVE_FORMAT_ZIP 0x50000 |
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283 | #define ARCHIVE_FORMAT_EMPTY 0x60000 |
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284 | #define ARCHIVE_FORMAT_AR 0x70000 |
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285 | #define ARCHIVE_FORMAT_AR_GNU (ARCHIVE_FORMAT_AR | 1) |
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286 | #define ARCHIVE_FORMAT_AR_BSD (ARCHIVE_FORMAT_AR | 2) |
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287 | #define ARCHIVE_FORMAT_MTREE 0x80000 |
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288 | #define ARCHIVE_FORMAT_RAW 0x90000 |
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289 | #define ARCHIVE_FORMAT_XAR 0xA0000 |
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290 | |||
291 | /*-
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292 | * Basic outline for reading an archive:
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293 | * 1) Ask archive_read_new for an archive reader object.
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294 | * 2) Update any global properties as appropriate.
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295 | * In particular, you'll certainly want to call appropriate
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296 | * archive_read_support_XXX functions.
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297 | * 3) Call archive_read_open_XXX to open the archive
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298 | * 4) Repeatedly call archive_read_next_header to get information about
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299 | * successive archive entries. Call archive_read_data to extract
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300 | * data for entries of interest.
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301 | * 5) Call archive_read_finish to end processing.
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302 | */
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303 | __LA_DECL struct archive *archive_read_new(void); |
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304 | |||
305 | /*
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306 | * The archive_read_support_XXX calls enable auto-detect for this
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307 | * archive handle. They also link in the necessary support code.
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308 | * For example, if you don't want bzlib linked in, don't invoke
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309 | * support_compression_bzip2(). The "all" functions provide the
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310 | * obvious shorthand.
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311 | */
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312 | __LA_DECL int archive_read_support_compression_all(struct archive *); |
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313 | __LA_DECL int archive_read_support_compression_bzip2(struct archive *); |
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314 | __LA_DECL int archive_read_support_compression_compress(struct archive *); |
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315 | __LA_DECL int archive_read_support_compression_gzip(struct archive *); |
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316 | __LA_DECL int archive_read_support_compression_lzma(struct archive *); |
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317 | __LA_DECL int archive_read_support_compression_none(struct archive *); |
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318 | __LA_DECL int archive_read_support_compression_program(struct archive *, |
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319 | const char *command); |
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320 | __LA_DECL int archive_read_support_compression_program_signature
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321 | (struct archive *, const char *, |
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322 | const void * /* match */, size_t); |
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323 | |||
324 | __LA_DECL int archive_read_support_compression_rpm(struct archive *); |
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325 | __LA_DECL int archive_read_support_compression_uu(struct archive *); |
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326 | __LA_DECL int archive_read_support_compression_xz(struct archive *); |
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327 | |||
328 | __LA_DECL int archive_read_support_format_all(struct archive *); |
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329 | __LA_DECL int archive_read_support_format_ar(struct archive *); |
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330 | __LA_DECL int archive_read_support_format_cpio(struct archive *); |
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331 | __LA_DECL int archive_read_support_format_empty(struct archive *); |
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332 | __LA_DECL int archive_read_support_format_gnutar(struct archive *); |
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333 | __LA_DECL int archive_read_support_format_iso9660(struct archive *); |
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334 | __LA_DECL int archive_read_support_format_mtree(struct archive *); |
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335 | __LA_DECL int archive_read_support_format_raw(struct archive *); |
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336 | __LA_DECL int archive_read_support_format_tar(struct archive *); |
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337 | __LA_DECL int archive_read_support_format_xar(struct archive *); |
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338 | __LA_DECL int archive_read_support_format_zip(struct archive *); |
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339 | |||
340 | |||
341 | /* Open the archive using callbacks for archive I/O. */
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342 | __LA_DECL int archive_read_open(struct archive *, void *_client_data, |
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343 | archive_open_callback *, archive_read_callback *, |
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344 | archive_close_callback *); |
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345 | __LA_DECL int archive_read_open2(struct archive *, void *_client_data, |
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346 | archive_open_callback *, archive_read_callback *, |
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347 | archive_skip_callback *, archive_close_callback *); |
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348 | |||
349 | /*
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350 | * A variety of shortcuts that invoke archive_read_open() with
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351 | * canned callbacks suitable for common situations. The ones that
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352 | * accept a block size handle tape blocking correctly.
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353 | */
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354 | /* Use this if you know the filename. Note: NULL indicates stdin. */
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355 | __LA_DECL int archive_read_open_filename(struct archive *, |
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356 | const char *_filename, size_t _block_size); |
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357 | /* archive_read_open_file() is a deprecated synonym for ..._open_filename(). */
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358 | __LA_DECL int archive_read_open_file(struct archive *, |
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359 | const char *_filename, size_t _block_size); |
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360 | /* Read an archive that's stored in memory. */
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361 | __LA_DECL int archive_read_open_memory(struct archive *, |
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362 | void * buff, size_t size);
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363 | /* A more involved version that is only used for internal testing. */
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364 | __LA_DECL int archive_read_open_memory2(struct archive *a, void *buff, |
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365 | size_t size, size_t read_size); |
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366 | /* Read an archive that's already open, using the file descriptor. */
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367 | __LA_DECL int archive_read_open_fd(struct archive *, int _fd, |
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368 | size_t _block_size); |
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369 | /* Read an archive that's already open, using a FILE *. */
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370 | /* Note: DO NOT use this with tape drives. */
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371 | __LA_DECL int archive_read_open_FILE(struct archive *, FILE *_file); |
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372 | |||
373 | /* Parses and returns next entry header. */
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374 | __LA_DECL int archive_read_next_header(struct archive *, |
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375 | struct archive_entry **);
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376 | |||
377 | /* Parses and returns next entry header using the archive_entry passed in */
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378 | __LA_DECL int archive_read_next_header2(struct archive *, |
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379 | struct archive_entry *);
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380 | |||
381 | /*
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382 | * Retrieve the byte offset in UNCOMPRESSED data where last-read
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383 | * header started.
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384 | */
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385 | __LA_DECL __LA_INT64_T archive_read_header_position(struct archive *);
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386 | |||
387 | /* Read data from the body of an entry. Similar to read(2). */
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388 | __LA_DECL __LA_SSIZE_T archive_read_data(struct archive *,
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389 | void *, size_t);
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390 | |||
391 | /*
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392 | * A zero-copy version of archive_read_data that also exposes the file offset
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393 | * of each returned block. Note that the client has no way to specify
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394 | * the desired size of the block. The API does guarantee that offsets will
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395 | * be strictly increasing and that returned blocks will not overlap.
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396 | */
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397 | #if ARCHIVE_VERSION_NUMBER < 3000000 |
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398 | __LA_DECL int archive_read_data_block(struct archive *a, |
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399 | const void **buff, size_t *size, off_t *offset); |
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400 | #else
|
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401 | __LA_DECL int archive_read_data_block(struct archive *a, |
||
402 | const void **buff, size_t *size, |
||
403 | __LA_INT64_T *offset); |
||
404 | #endif
|
||
405 | |||
406 | /*-
|
||
407 | * Some convenience functions that are built on archive_read_data:
|
||
408 | * 'skip': skips entire entry
|
||
409 | * 'into_buffer': writes data into memory buffer that you provide
|
||
410 | * 'into_fd': writes data to specified filedes
|
||
411 | */
|
||
412 | __LA_DECL int archive_read_data_skip(struct archive *); |
||
413 | __LA_DECL int archive_read_data_into_buffer(struct archive *, |
||
414 | void *buffer, __LA_SSIZE_T len);
|
||
415 | __LA_DECL int archive_read_data_into_fd(struct archive *, int fd); |
||
416 | |||
417 | /*
|
||
418 | * Set read options.
|
||
419 | */
|
||
420 | /* Apply option string to the format only. */
|
||
421 | __LA_DECL int archive_read_set_format_options(struct archive *_a, |
||
422 | const char *s); |
||
423 | /* Apply option string to the filter only. */
|
||
424 | __LA_DECL int archive_read_set_filter_options(struct archive *_a, |
||
425 | const char *s); |
||
426 | /* Apply option string to both the format and the filter. */
|
||
427 | __LA_DECL int archive_read_set_options(struct archive *_a, |
||
428 | const char *s); |
||
429 | |||
430 | /*-
|
||
431 | * Convenience function to recreate the current entry (whose header
|
||
432 | * has just been read) on disk.
|
||
433 | *
|
||
434 | * This does quite a bit more than just copy data to disk. It also:
|
||
435 | * - Creates intermediate directories as required.
|
||
436 | * - Manages directory permissions: non-writable directories will
|
||
437 | * be initially created with write permission enabled; when the
|
||
438 | * archive is closed, dir permissions are edited to the values specified
|
||
439 | * in the archive.
|
||
440 | * - Checks hardlinks: hardlinks will not be extracted unless the
|
||
441 | * linked-to file was also extracted within the same session. (TODO)
|
||
442 | */
|
||
443 | |||
444 | /* The "flags" argument selects optional behavior, 'OR' the flags you want. */
|
||
445 | |||
446 | /* Default: Do not try to set owner/group. */
|
||
447 | #define ARCHIVE_EXTRACT_OWNER (0x0001) |
||
448 | /* Default: Do obey umask, do not restore SUID/SGID/SVTX bits. */
|
||
449 | #define ARCHIVE_EXTRACT_PERM (0x0002) |
||
450 | /* Default: Do not restore mtime/atime. */
|
||
451 | #define ARCHIVE_EXTRACT_TIME (0x0004) |
||
452 | /* Default: Replace existing files. */
|
||
453 | #define ARCHIVE_EXTRACT_NO_OVERWRITE (0x0008) |
||
454 | /* Default: Try create first, unlink only if create fails with EEXIST. */
|
||
455 | #define ARCHIVE_EXTRACT_UNLINK (0x0010) |
||
456 | /* Default: Do not restore ACLs. */
|
||
457 | #define ARCHIVE_EXTRACT_ACL (0x0020) |
||
458 | /* Default: Do not restore fflags. */
|
||
459 | #define ARCHIVE_EXTRACT_FFLAGS (0x0040) |
||
460 | /* Default: Do not restore xattrs. */
|
||
461 | #define ARCHIVE_EXTRACT_XATTR (0x0080) |
||
462 | /* Default: Do not try to guard against extracts redirected by symlinks. */
|
||
463 | /* Note: With ARCHIVE_EXTRACT_UNLINK, will remove any intermediate symlink. */
|
||
464 | #define ARCHIVE_EXTRACT_SECURE_SYMLINKS (0x0100) |
||
465 | /* Default: Do not reject entries with '..' as path elements. */
|
||
466 | #define ARCHIVE_EXTRACT_SECURE_NODOTDOT (0x0200) |
||
467 | /* Default: Create parent directories as needed. */
|
||
468 | #define ARCHIVE_EXTRACT_NO_AUTODIR (0x0400) |
||
469 | /* Default: Overwrite files, even if one on disk is newer. */
|
||
470 | #define ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER (0x0800) |
||
471 | /* Detect blocks of 0 and write holes instead. */
|
||
472 | #define ARCHIVE_EXTRACT_SPARSE (0x1000) |
||
473 | |||
474 | __LA_DECL int archive_read_extract(struct archive *, struct archive_entry *, |
||
475 | int flags);
|
||
476 | __LA_DECL int archive_read_extract2(struct archive *, struct archive_entry *, |
||
477 | struct archive * /* dest */); |
||
478 | __LA_DECL void archive_read_extract_set_progress_callback(struct archive *, |
||
479 | void (*_progress_func)(void *), void *_user_data); |
||
480 | |||
481 | /* Record the dev/ino of a file that will not be written. This is
|
||
482 | * generally set to the dev/ino of the archive being read. */
|
||
483 | __LA_DECL void archive_read_extract_set_skip_file(struct archive *, |
||
484 | dev_t, ino_t); |
||
485 | |||
486 | /* Close the file and release most resources. */
|
||
487 | __LA_DECL int archive_read_close(struct archive *); |
||
488 | /* Release all resources and destroy the object. */
|
||
489 | /* Note that archive_read_finish will call archive_read_close for you. */
|
||
490 | #if ARCHIVE_VERSION_NUMBER < 2000000 |
||
491 | /* Erroneously declared to return void in libarchive 1.x */
|
||
492 | __LA_DECL void archive_read_finish(struct archive *); |
||
493 | #else
|
||
494 | __LA_DECL int archive_read_finish(struct archive *); |
||
495 | #endif
|
||
496 | |||
497 | /*-
|
||
498 | * To create an archive:
|
||
499 | * 1) Ask archive_write_new for a archive writer object.
|
||
500 | * 2) Set any global properties. In particular, you should set
|
||
501 | * the compression and format to use.
|
||
502 | * 3) Call archive_write_open to open the file (most people
|
||
503 | * will use archive_write_open_file or archive_write_open_fd,
|
||
504 | * which provide convenient canned I/O callbacks for you).
|
||
505 | * 4) For each entry:
|
||
506 | * - construct an appropriate struct archive_entry structure
|
||
507 | * - archive_write_header to write the header
|
||
508 | * - archive_write_data to write the entry data
|
||
509 | * 5) archive_write_close to close the output
|
||
510 | * 6) archive_write_finish to cleanup the writer and release resources
|
||
511 | */
|
||
512 | __LA_DECL struct archive *archive_write_new(void); |
||
513 | __LA_DECL int archive_write_set_bytes_per_block(struct archive *, |
||
514 | int bytes_per_block);
|
||
515 | __LA_DECL int archive_write_get_bytes_per_block(struct archive *); |
||
516 | /* XXX This is badly misnamed; suggestions appreciated. XXX */
|
||
517 | __LA_DECL int archive_write_set_bytes_in_last_block(struct archive *, |
||
518 | int bytes_in_last_block);
|
||
519 | __LA_DECL int archive_write_get_bytes_in_last_block(struct archive *); |
||
520 | |||
521 | /* The dev/ino of a file that won't be archived. This is used
|
||
522 | * to avoid recursively adding an archive to itself. */
|
||
523 | __LA_DECL int archive_write_set_skip_file(struct archive *, dev_t, ino_t); |
||
524 | |||
525 | __LA_DECL int archive_write_set_compression_bzip2(struct archive *); |
||
526 | __LA_DECL int archive_write_set_compression_compress(struct archive *); |
||
527 | __LA_DECL int archive_write_set_compression_gzip(struct archive *); |
||
528 | __LA_DECL int archive_write_set_compression_lzma(struct archive *); |
||
529 | __LA_DECL int archive_write_set_compression_none(struct archive *); |
||
530 | __LA_DECL int archive_write_set_compression_program(struct archive *, |
||
531 | const char *cmd); |
||
532 | __LA_DECL int archive_write_set_compression_xz(struct archive *); |
||
533 | /* A convenience function to set the format based on the code or name. */
|
||
534 | __LA_DECL int archive_write_set_format(struct archive *, int format_code); |
||
535 | __LA_DECL int archive_write_set_format_by_name(struct archive *, |
||
536 | const char *name); |
||
537 | /* To minimize link pollution, use one or more of the following. */
|
||
538 | __LA_DECL int archive_write_set_format_ar_bsd(struct archive *); |
||
539 | __LA_DECL int archive_write_set_format_ar_svr4(struct archive *); |
||
540 | __LA_DECL int archive_write_set_format_cpio(struct archive *); |
||
541 | __LA_DECL int archive_write_set_format_cpio_newc(struct archive *); |
||
542 | __LA_DECL int archive_write_set_format_mtree(struct archive *); |
||
543 | /* TODO: int archive_write_set_format_old_tar(struct archive *); */
|
||
544 | __LA_DECL int archive_write_set_format_pax(struct archive *); |
||
545 | __LA_DECL int archive_write_set_format_pax_restricted(struct archive *); |
||
546 | __LA_DECL int archive_write_set_format_shar(struct archive *); |
||
547 | __LA_DECL int archive_write_set_format_shar_dump(struct archive *); |
||
548 | __LA_DECL int archive_write_set_format_ustar(struct archive *); |
||
549 | __LA_DECL int archive_write_set_format_zip(struct archive *); |
||
550 | __LA_DECL int archive_write_open(struct archive *, void *, |
||
551 | archive_open_callback *, archive_write_callback *, |
||
552 | archive_close_callback *); |
||
553 | __LA_DECL int archive_write_open_fd(struct archive *, int _fd); |
||
554 | __LA_DECL int archive_write_open_filename(struct archive *, const char *_file); |
||
555 | /* A deprecated synonym for archive_write_open_filename() */
|
||
556 | __LA_DECL int archive_write_open_file(struct archive *, const char *_file); |
||
557 | __LA_DECL int archive_write_open_FILE(struct archive *, FILE *); |
||
558 | /* _buffSize is the size of the buffer, _used refers to a variable that
|
||
559 | * will be updated after each write into the buffer. */
|
||
560 | __LA_DECL int archive_write_open_memory(struct archive *, |
||
561 | void *_buffer, size_t _buffSize, size_t *_used);
|
||
562 | |||
563 | /*
|
||
564 | * Note that the library will truncate writes beyond the size provided
|
||
565 | * to archive_write_header or pad if the provided data is short.
|
||
566 | */
|
||
567 | __LA_DECL int archive_write_header(struct archive *, |
||
568 | struct archive_entry *);
|
||
569 | #if ARCHIVE_VERSION_NUMBER < 2000000 |
||
570 | /* This was erroneously declared to return "int" in libarchive 1.x. */
|
||
571 | __LA_DECL int archive_write_data(struct archive *, |
||
572 | const void *, size_t); |
||
573 | #else
|
||
574 | /* Libarchive 2.0 and later return ssize_t here. */
|
||
575 | __LA_DECL __LA_SSIZE_T archive_write_data(struct archive *,
|
||
576 | const void *, size_t); |
||
577 | #endif
|
||
578 | |||
579 | #if ARCHIVE_VERSION_NUMBER < 3000000 |
||
580 | /* Libarchive 1.x and 2.x use off_t for the argument, but that's not
|
||
581 | * stable on Linux. */
|
||
582 | __LA_DECL __LA_SSIZE_T archive_write_data_block(struct archive *,
|
||
583 | const void *, size_t, off_t); |
||
584 | #else
|
||
585 | /* Libarchive 3.0 uses explicit int64_t to ensure consistent 64-bit support. */
|
||
586 | __LA_DECL __LA_SSIZE_T archive_write_data_block(struct archive *,
|
||
587 | const void *, size_t, __LA_INT64_T); |
||
588 | #endif
|
||
589 | __LA_DECL int archive_write_finish_entry(struct archive *); |
||
590 | __LA_DECL int archive_write_close(struct archive *); |
||
591 | #if ARCHIVE_VERSION_NUMBER < 2000000 |
||
592 | /* Return value was incorrect in libarchive 1.x. */
|
||
593 | __LA_DECL void archive_write_finish(struct archive *); |
||
594 | #else
|
||
595 | /* Libarchive 2.x and later returns an error if this fails. */
|
||
596 | /* It can fail if the archive wasn't already closed, in which case
|
||
597 | * archive_write_finish() will implicitly call archive_write_close(). */
|
||
598 | __LA_DECL int archive_write_finish(struct archive *); |
||
599 | #endif
|
||
600 | |||
601 | /*
|
||
602 | * Set write options.
|
||
603 | */
|
||
604 | /* Apply option string to the format only. */
|
||
605 | __LA_DECL int archive_write_set_format_options(struct archive *_a, |
||
606 | const char *s); |
||
607 | /* Apply option string to the compressor only. */
|
||
608 | __LA_DECL int archive_write_set_compressor_options(struct archive *_a, |
||
609 | const char *s); |
||
610 | /* Apply option string to both the format and the compressor. */
|
||
611 | __LA_DECL int archive_write_set_options(struct archive *_a, |
||
612 | const char *s); |
||
613 | |||
614 | |||
615 | /*-
|
||
616 | * ARCHIVE_WRITE_DISK API
|
||
617 | *
|
||
618 | * To create objects on disk:
|
||
619 | * 1) Ask archive_write_disk_new for a new archive_write_disk object.
|
||
620 | * 2) Set any global properties. In particular, you probably
|
||
621 | * want to set the options.
|
||
622 | * 3) For each entry:
|
||
623 | * - construct an appropriate struct archive_entry structure
|
||
624 | * - archive_write_header to create the file/dir/etc on disk
|
||
625 | * - archive_write_data to write the entry data
|
||
626 | * 4) archive_write_finish to cleanup the writer and release resources
|
||
627 | *
|
||
628 | * In particular, you can use this in conjunction with archive_read()
|
||
629 | * to pull entries out of an archive and create them on disk.
|
||
630 | */
|
||
631 | __LA_DECL struct archive *archive_write_disk_new(void); |
||
632 | /* This file will not be overwritten. */
|
||
633 | __LA_DECL int archive_write_disk_set_skip_file(struct archive *, |
||
634 | dev_t, ino_t); |
||
635 | /* Set flags to control how the next item gets created.
|
||
636 | * This accepts a bitmask of ARCHIVE_EXTRACT_XXX flags defined above. */
|
||
637 | __LA_DECL int archive_write_disk_set_options(struct archive *, |
||
638 | int flags);
|
||
639 | /*
|
||
640 | * The lookup functions are given uname/uid (or gname/gid) pairs and
|
||
641 | * return a uid (gid) suitable for this system. These are used for
|
||
642 | * restoring ownership and for setting ACLs. The default functions
|
||
643 | * are naive, they just return the uid/gid. These are small, so reasonable
|
||
644 | * for applications that don't need to preserve ownership; they
|
||
645 | * are probably also appropriate for applications that are doing
|
||
646 | * same-system backup and restore.
|
||
647 | */
|
||
648 | /*
|
||
649 | * The "standard" lookup functions use common system calls to lookup
|
||
650 | * the uname/gname, falling back to the uid/gid if the names can't be
|
||
651 | * found. They cache lookups and are reasonably fast, but can be very
|
||
652 | * large, so they are not used unless you ask for them. In
|
||
653 | * particular, these match the specifications of POSIX "pax" and old
|
||
654 | * POSIX "tar".
|
||
655 | */
|
||
656 | __LA_DECL int archive_write_disk_set_standard_lookup(struct archive *); |
||
657 | /*
|
||
658 | * If neither the default (naive) nor the standard (big) functions suit
|
||
659 | * your needs, you can write your own and register them. Be sure to
|
||
660 | * include a cleanup function if you have allocated private data.
|
||
661 | */
|
||
662 | __LA_DECL int archive_write_disk_set_group_lookup(struct archive *, |
||
663 | void * /* private_data */, |
||
664 | __LA_GID_T (*)(void *, const char *, __LA_GID_T), |
||
665 | void (* /* cleanup */)(void *)); |
||
666 | __LA_DECL int archive_write_disk_set_user_lookup(struct archive *, |
||
667 | void * /* private_data */, |
||
668 | __LA_UID_T (*)(void *, const char *, __LA_UID_T), |
||
669 | void (* /* cleanup */)(void *)); |
||
670 | |||
671 | /*
|
||
672 | * ARCHIVE_READ_DISK API
|
||
673 | *
|
||
674 | * This is still evolving and somewhat experimental.
|
||
675 | */
|
||
676 | __LA_DECL struct archive *archive_read_disk_new(void); |
||
677 | /* The names for symlink modes here correspond to an old BSD
|
||
678 | * command-line argument convention: -L, -P, -H */
|
||
679 | /* Follow all symlinks. */
|
||
680 | __LA_DECL int archive_read_disk_set_symlink_logical(struct archive *); |
||
681 | /* Follow no symlinks. */
|
||
682 | __LA_DECL int archive_read_disk_set_symlink_physical(struct archive *); |
||
683 | /* Follow symlink initially, then not. */
|
||
684 | __LA_DECL int archive_read_disk_set_symlink_hybrid(struct archive *); |
||
685 | /* TODO: Handle Linux stat32/stat64 ugliness. <sigh> */
|
||
686 | __LA_DECL int archive_read_disk_entry_from_file(struct archive *, |
||
687 | struct archive_entry *, int /* fd */, const struct stat *); |
||
688 | /* Look up gname for gid or uname for uid. */
|
||
689 | /* Default implementations are very, very stupid. */
|
||
690 | __LA_DECL const char *archive_read_disk_gname(struct archive *, __LA_GID_T); |
||
691 | __LA_DECL const char *archive_read_disk_uname(struct archive *, __LA_UID_T); |
||
692 | /* "Standard" implementation uses getpwuid_r, getgrgid_r and caches the
|
||
693 | * results for performance. */
|
||
694 | __LA_DECL int archive_read_disk_set_standard_lookup(struct archive *); |
||
695 | /* You can install your own lookups if you like. */
|
||
696 | __LA_DECL int archive_read_disk_set_gname_lookup(struct archive *, |
||
697 | void * /* private_data */, |
||
698 | const char *(* /* lookup_fn */)(void *, __LA_GID_T), |
||
699 | void (* /* cleanup_fn */)(void *)); |
||
700 | __LA_DECL int archive_read_disk_set_uname_lookup(struct archive *, |
||
701 | void * /* private_data */, |
||
702 | const char *(* /* lookup_fn */)(void *, __LA_UID_T), |
||
703 | void (* /* cleanup_fn */)(void *)); |
||
704 | |||
705 | /*
|
||
706 | * Accessor functions to read/set various information in
|
||
707 | * the struct archive object:
|
||
708 | */
|
||
709 | /* Bytes written after compression or read before decompression. */
|
||
710 | __LA_DECL __LA_INT64_T archive_position_compressed(struct archive *);
|
||
711 | /* Bytes written to compressor or read from decompressor. */
|
||
712 | __LA_DECL __LA_INT64_T archive_position_uncompressed(struct archive *);
|
||
713 | |||
714 | __LA_DECL const char *archive_compression_name(struct archive *); |
||
715 | __LA_DECL int archive_compression(struct archive *); |
||
716 | __LA_DECL int archive_errno(struct archive *); |
||
717 | __LA_DECL const char *archive_error_string(struct archive *); |
||
718 | __LA_DECL const char *archive_format_name(struct archive *); |
||
719 | __LA_DECL int archive_format(struct archive *); |
||
720 | __LA_DECL void archive_clear_error(struct archive *); |
||
721 | __LA_DECL void archive_set_error(struct archive *, int _err, |
||
722 | const char *fmt, ...) |
||
723 | __attribute__((__format__(__printf__,3,4))); |
||
724 | __LA_DECL void archive_copy_error(struct archive *dest, |
||
725 | struct archive *src);
|
||
726 | __LA_DECL int archive_file_count(struct archive *); |
||
727 | |||
728 | #ifdef __cplusplus
|
||
729 | } |
||
730 | #endif
|
||
731 | |||
732 | /* These are meaningless outside of this header. */
|
||
733 | #undef __LA_DECL
|
||
734 | #undef __LA_GID_T
|
||
735 | #undef __LA_UID_T
|
||
736 | |||
737 | /* These need to remain defined because they're used in the
|
||
738 | * callback type definitions. XXX Fix this. This is ugly. XXX */
|
||
739 | /* #undef __LA_INT64_T */
|
||
740 | /* #undef __LA_SSIZE_T */
|
||
741 | |||
742 | #endif /* !ARCHIVE_H_INCLUDED */ |