| 1 | #
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| 2 | # For a description of the syntax of this configuration file,
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| 3 | # see scripts/kbuild/config-language.txt.
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| 4 | #
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| 5 |
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| 6 | menu "Archival Utilities"
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| 7 |
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| 8 | INSERT
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| 9 |
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| 10 | config FEATURE_SEAMLESS_XZ
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| 11 | bool "Make tar, rpm, modprobe etc understand .xz data"
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| 12 | default y
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| 13 | help
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| 14 | Make tar, rpm, modprobe etc understand .xz data.
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| 15 |
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| 16 | config FEATURE_SEAMLESS_LZMA
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| 17 | bool "Make tar, rpm, modprobe etc understand .lzma data"
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| 18 | default y
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| 19 | help
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| 20 | Make tar, rpm, modprobe etc understand .lzma data.
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| 21 |
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| 22 | config FEATURE_SEAMLESS_BZ2
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| 23 | bool "Make tar, rpm, modprobe etc understand .bz2 data"
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| 24 | default y
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| 25 | help
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| 26 | Make tar, rpm, modprobe etc understand .bz2 data.
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| 27 |
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| 28 | config FEATURE_SEAMLESS_GZ
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| 29 | bool "Make tar, rpm, modprobe etc understand .gz data"
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| 30 | default y
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| 31 | help
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| 32 | Make tar, rpm, modprobe etc understand .gz data.
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| 33 |
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| 34 | config FEATURE_SEAMLESS_Z
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| 35 | bool "tar, rpm, modprobe etc understand .Z data"
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| 36 | default n
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| 37 | help
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| 38 | Make tar, rpm, modprobe etc understand .Z data.
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| 39 |
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| 40 | config AR
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| 41 | bool "ar"
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| 42 | default n # needs to be improved to be able to replace binutils ar
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| 43 | help
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| 44 | ar is an archival utility program used to create, modify, and
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| 45 | extract contents from archives. An archive is a single file holding
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| 46 | a collection of other files in a structure that makes it possible to
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| 47 | retrieve the original individual files (called archive members).
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| 48 | The original files' contents, mode (permissions), timestamp, owner,
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| 49 | and group are preserved in the archive, and can be restored on
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| 50 | extraction.
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| 51 |
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| 52 | The stored filename is limited to 15 characters. (for more information
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| 53 | see long filename support).
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| 54 | ar has 60 bytes of overheads for every stored file.
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| 55 |
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| 56 | This implementation of ar can extract archives, it cannot create or
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| 57 | modify them.
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| 58 | On an x86 system, the ar applet adds about 1K.
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| 59 |
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| 60 | Unless you have a specific application which requires ar, you should
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| 61 | probably say N here.
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| 62 |
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| 63 | config FEATURE_AR_LONG_FILENAMES
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| 64 | bool "Support for long filenames (not needed for debs)"
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| 65 | default y
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| 66 | depends on AR
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| 67 | help
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| 68 | By default the ar format can only store the first 15 characters
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| 69 | of the filename, this option removes that limitation.
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| 70 | It supports the GNU ar long filename method which moves multiple long
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| 71 | filenames into a the data section of a new ar entry.
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| 72 |
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| 73 | config FEATURE_AR_CREATE
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| 74 | bool "Support archive creation"
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| 75 | default y
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| 76 | depends on AR
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| 77 | help
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| 78 | This enables archive creation (-c and -r) with busybox ar.
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| 79 |
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| 80 | config BUNZIP2
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| 81 | bool "bunzip2"
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| 82 | default y
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| 83 | help
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| 84 | bunzip2 is a compression utility using the Burrows-Wheeler block
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| 85 | sorting text compression algorithm, and Huffman coding. Compression
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| 86 | is generally considerably better than that achieved by more
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| 87 | conventional LZ77/LZ78-based compressors, and approaches the
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| 88 | performance of the PPM family of statistical compressors.
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| 89 |
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| 90 | Unless you have a specific application which requires bunzip2, you
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| 91 | should probably say N here.
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| 92 |
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| 93 | config BZIP2
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| 94 | bool "bzip2"
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| 95 | default y
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| 96 | help
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| 97 | bzip2 is a compression utility using the Burrows-Wheeler block
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| 98 | sorting text compression algorithm, and Huffman coding. Compression
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| 99 | is generally considerably better than that achieved by more
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| 100 | conventional LZ77/LZ78-based compressors, and approaches the
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| 101 | performance of the PPM family of statistical compressors.
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| 102 |
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| 103 | Unless you have a specific application which requires bzip2, you
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| 104 | should probably say N here.
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| 105 |
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| 106 | config CPIO
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| 107 | bool "cpio"
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| 108 | default y
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| 109 | help
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| 110 | cpio is an archival utility program used to create, modify, and
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| 111 | extract contents from archives.
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| 112 | cpio has 110 bytes of overheads for every stored file.
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| 113 |
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| 114 | This implementation of cpio can extract cpio archives created in the
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| 115 | "newc" or "crc" format, it cannot create or modify them.
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| 116 |
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| 117 | Unless you have a specific application which requires cpio, you
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| 118 | should probably say N here.
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| 119 |
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| 120 | config FEATURE_CPIO_O
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| 121 | bool "Support for archive creation"
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| 122 | default y
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| 123 | depends on CPIO
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| 124 | help
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| 125 | This implementation of cpio can create cpio archives in the "newc"
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| 126 | format only.
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| 127 |
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| 128 | config FEATURE_CPIO_P
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| 129 | bool "Support for passthrough mode"
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| 130 | default y
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| 131 | depends on FEATURE_CPIO_O
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| 132 | help
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| 133 | Passthrough mode. Rarely used.
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| 134 |
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| 135 | config DPKG
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| 136 | bool "dpkg"
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| 137 | default n
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| 138 | select FEATURE_SEAMLESS_GZ
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| 139 | help
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| 140 | dpkg is a medium-level tool to install, build, remove and manage
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| 141 | Debian packages.
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| 142 |
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| 143 | This implementation of dpkg has a number of limitations,
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| 144 | you should use the official dpkg if possible.
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| 145 |
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| 146 | config DPKG_DEB
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| 147 | bool "dpkg_deb"
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| 148 | default n
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| 149 | select FEATURE_SEAMLESS_GZ
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| 150 | help
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| 151 | dpkg-deb unpacks and provides information about Debian archives.
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| 152 |
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| 153 | This implementation of dpkg-deb cannot pack archives.
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| 154 |
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| 155 | Unless you have a specific application which requires dpkg-deb,
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| 156 | say N here.
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| 157 |
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| 158 | config FEATURE_DPKG_DEB_EXTRACT_ONLY
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| 159 | bool "Extract only (-x)"
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| 160 | default n
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| 161 | depends on DPKG_DEB
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| 162 | help
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| 163 | This reduces dpkg-deb to the equivalent of
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| 164 | "ar -p <deb> data.tar.gz | tar -zx". However it saves space as none
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| 165 | of the extra dpkg-deb, ar or tar options are needed, they are linked
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| 166 | to internally.
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| 167 |
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| 168 | config GUNZIP
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| 169 | bool "gunzip"
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| 170 | default y
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| 171 | help
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| 172 | gunzip is used to decompress archives created by gzip.
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| 173 | You can use the `-t' option to test the integrity of
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| 174 | an archive, without decompressing it.
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| 175 |
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| 176 | config GZIP
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| 177 | bool "gzip"
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| 178 | default y
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| 179 | help
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| 180 | gzip is used to compress files.
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| 181 | It's probably the most widely used UNIX compression program.
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| 182 |
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| 183 | config FEATURE_GZIP_LONG_OPTIONS
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| 184 | bool "Enable long options"
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| 185 | default y
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| 186 | depends on GZIP && LONG_OPTS
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| 187 | help
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| 188 | Enable use of long options, increases size by about 106 Bytes
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| 189 |
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| 190 | config GZIP_FAST
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| 191 | int "Trade memory for gzip speed (0:small,slow - 2:fast,big)"
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| 192 | default 0
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| 193 | range 0 2
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| 194 | depends on GZIP
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| 195 | help
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| 196 | Enable big memory options for gzip.
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| 197 | 0: small buffers, small hash-tables
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| 198 | 1: larger buffers, larger hash-tables
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| 199 | 2: larger buffers, largest hash-tables
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| 200 | Larger models may give slightly better compression
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| 201 |
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| 202 | config LZOP
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| 203 | bool "lzop"
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| 204 | default y
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| 205 | help
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| 206 | Lzop compression/decompresion.
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| 207 |
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| 208 | config LZOP_COMPR_HIGH
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| 209 | bool "lzop compression levels 7,8,9 (not very useful)"
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| 210 | default n
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| 211 | depends on LZOP
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| 212 | help
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| 213 | High levels (7,8,9) of lzop compression. These levels
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| 214 | are actually slower than gzip at equivalent compression ratios
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| 215 | and take up 3.2K of code.
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| 216 |
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| 217 | config RPM2CPIO
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| 218 | bool "rpm2cpio"
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| 219 | default y
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| 220 | help
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| 221 | Converts a RPM file into a CPIO archive.
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| 222 |
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| 223 | config RPM
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| 224 | bool "rpm"
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| 225 | default y
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| 226 | help
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| 227 | Mini RPM applet - queries and extracts RPM packages.
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| 228 |
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| 229 | config TAR
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| 230 | bool "tar"
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| 231 | default y
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| 232 | help
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| 233 | tar is an archiving program. It's commonly used with gzip to
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| 234 | create compressed archives. It's probably the most widely used
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| 235 | UNIX archive program.
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| 236 |
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| 237 | config FEATURE_TAR_CREATE
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| 238 | bool "Enable archive creation"
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| 239 | default y
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| 240 | depends on TAR
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| 241 | help
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| 242 | If you enable this option you'll be able to create
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| 243 | tar archives using the `-c' option.
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| 244 |
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| 245 | config FEATURE_TAR_AUTODETECT
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| 246 | bool "Autodetect compressed tarballs"
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| 247 | default y
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| 248 | depends on TAR && (FEATURE_SEAMLESS_Z || FEATURE_SEAMLESS_GZ || FEATURE_SEAMLESS_BZ2 || FEATURE_SEAMLESS_LZMA || FEATURE_SEAMLESS_XZ)
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| 249 | help
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| 250 | With this option tar can automatically detect compressed
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| 251 | tarballs. Currently it works only on files (not pipes etc).
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| 252 |
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| 253 | config FEATURE_TAR_FROM
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| 254 | bool "Enable -X (exclude from) and -T (include from) options)"
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| 255 | default y
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| 256 | depends on TAR
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| 257 | help
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| 258 | If you enable this option you'll be able to specify
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| 259 | a list of files to include or exclude from an archive.
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| 260 |
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| 261 | config FEATURE_TAR_OLDGNU_COMPATIBILITY
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| 262 | bool "Support for old tar header format"
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| 263 | default y
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| 264 | depends on TAR || DPKG
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| 265 | help
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| 266 | This option is required to unpack archives created in
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| 267 | the old GNU format; help to kill this old format by
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| 268 | repacking your ancient archives with the new format.
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| 269 |
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| 270 | config FEATURE_TAR_OLDSUN_COMPATIBILITY
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| 271 | bool "Enable untarring of tarballs with checksums produced by buggy Sun tar"
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| 272 | default y
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| 273 | depends on TAR || DPKG
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| 274 | help
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| 275 | This option is required to unpack archives created by some old
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| 276 | version of Sun's tar (it was calculating checksum using signed
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| 277 | arithmetic). It is said to be fixed in newer Sun tar, but "old"
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| 278 | tarballs still exist.
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| 279 |
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| 280 | config FEATURE_TAR_GNU_EXTENSIONS
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| 281 | bool "Support for GNU tar extensions (long filenames)"
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| 282 | default y
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| 283 | depends on TAR || DPKG
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| 284 | help
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| 285 | With this option busybox supports GNU long filenames and
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| 286 | linknames.
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| 287 |
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| 288 | config FEATURE_TAR_LONG_OPTIONS
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| 289 | bool "Enable long options"
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| 290 | default y
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| 291 | depends on TAR && LONG_OPTS
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| 292 | help
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| 293 | Enable use of long options, increases size by about 400 Bytes
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| 294 |
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| 295 | config FEATURE_TAR_TO_COMMAND
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| 296 | bool "Support for writing to an external program"
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| 297 | default y
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| 298 | depends on TAR && FEATURE_TAR_LONG_OPTIONS
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| 299 | help
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| 300 | If you enable this option you'll be able to instruct tar to send
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| 301 | the contents of each extracted file to the standard input of an
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| 302 | external program.
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| 303 |
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| 304 | config FEATURE_TAR_UNAME_GNAME
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| 305 | bool "Enable use of user and group names"
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| 306 | default y
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| 307 | depends on TAR
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| 308 | help
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| 309 | Enables use of user and group names in tar. This affects contents
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| 310 | listings (-t) and preserving permissions when unpacking (-p).
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| 311 | +200 bytes.
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| 312 |
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| 313 | config FEATURE_TAR_NOPRESERVE_TIME
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| 314 | bool "Enable -m (do not preserve time) option"
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| 315 | default y
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| 316 | depends on TAR
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| 317 | help
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| 318 | With this option busybox supports GNU tar -m
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| 319 | (do not preserve time) option.
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| 320 |
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| 321 | config FEATURE_TAR_SELINUX
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| 322 | bool "Support for extracting SELinux labels"
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| 323 | default n
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| 324 | depends on TAR && SELINUX
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| 325 | help
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| 326 | With this option busybox supports restoring SELinux labels
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| 327 | when extracting files from tar archives.
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| 328 |
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| 329 | config UNCOMPRESS
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| 330 | bool "uncompress"
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| 331 | default n
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| 332 | help
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| 333 | uncompress is used to decompress archives created by compress.
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| 334 | Not much used anymore, replaced by gzip/gunzip.
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| 335 |
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| 336 | config UNLZMA
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| 337 | bool "unlzma"
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| 338 | default y
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| 339 | help
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| 340 | unlzma is a compression utility using the Lempel-Ziv-Markov chain
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| 341 | compression algorithm, and range coding. Compression
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| 342 | is generally considerably better than that achieved by the bzip2
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| 343 | compressors.
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| 344 |
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| 345 | The BusyBox unlzma applet is limited to decompression only.
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| 346 | On an x86 system, this applet adds about 4K.
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| 347 |
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| 348 | config FEATURE_LZMA_FAST
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| 349 | bool "Optimize unlzma for speed"
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| 350 | default n
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| 351 | depends on UNLZMA
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| 352 | help
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| 353 | This option reduces decompression time by about 25% at the cost of
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| 354 | a 1K bigger binary.
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| 355 |
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| 356 | config LZMA
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| 357 | bool "Provide lzma alias which supports only unpacking"
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| 358 | default y
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| 359 | depends on UNLZMA
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| 360 | help
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| 361 | Enable this option if you want commands like "lzma -d" to work.
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| 362 | IOW: you'll get lzma applet, but it will always require -d option.
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| 363 |
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| 364 | config UNXZ
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| 365 | bool "unxz"
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| 366 | default y
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| 367 | help
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| 368 | unxz is a unlzma successor.
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| 369 |
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| 370 | config XZ
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| 371 | bool "Provide xz alias which supports only unpacking"
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| 372 | default y
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| 373 | depends on UNXZ
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| 374 | help
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| 375 | Enable this option if you want commands like "xz -d" to work.
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| 376 | IOW: you'll get xz applet, but it will always require -d option.
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| 377 |
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| 378 | config UNZIP
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| 379 | bool "unzip"
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| 380 | default y
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| 381 | help
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| 382 | unzip will list or extract files from a ZIP archive,
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| 383 | commonly found on DOS/WIN systems. The default behavior
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| 384 | (with no options) is to extract the archive into the
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| 385 | current directory. Use the `-d' option to extract to a
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| 386 | directory of your choice.
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| 387 |
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| 388 | endmenu
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