1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
|
# DO NOT EDIT. This file is generated from Config.src
#
# For a description of the syntax of this configuration file,
# see docs/Kconfig-language.txt.
#
menu "Archival Utilities"
config BUSYBOX_FEATURE_SEAMLESS_XZ
bool "Make tar, rpm, modprobe etc understand .xz data"
default y
config BUSYBOX_FEATURE_SEAMLESS_LZMA
bool "Make tar, rpm, modprobe etc understand .lzma data"
default y
config BUSYBOX_FEATURE_SEAMLESS_BZ2
bool "Make tar, rpm, modprobe etc understand .bz2 data"
default y
config BUSYBOX_FEATURE_SEAMLESS_GZ
bool "Make tar, rpm, modprobe etc understand .gz data"
default y
config BUSYBOX_FEATURE_SEAMLESS_Z
bool "Make tar, rpm, modprobe etc understand .Z data"
default n # it is ancient
config BUSYBOX_AR
bool "ar (9.5 kb)"
default n # needs to be improved to be able to replace binutils ar
help
ar is an archival utility program used to create, modify, and
extract contents from archives. In practice, it is used exclusively
for object module archives used by compilers.
Unless you have a specific application which requires ar, you should
probably say N here: most compilers come with their own ar utility.
config BUSYBOX_FEATURE_AR_LONG_FILENAMES
bool "Support long filenames (not needed for debs)"
default y
depends on BUSYBOX_AR
help
By default the ar format can only store the first 15 characters
of the filename, this option removes that limitation.
It supports the GNU ar long filename method which moves multiple long
filenames into a the data section of a new ar entry.
config BUSYBOX_FEATURE_AR_CREATE
bool "Support archive creation"
default y
depends on BUSYBOX_AR
help
This enables archive creation (-c and -r) with busybox ar.
config BUSYBOX_UNCOMPRESS
bool "uncompress (7.1 kb)"
default n # ancient
help
uncompress is used to decompress archives created by compress.
Not much used anymore, replaced by gzip/gunzip.
config BUSYBOX_GUNZIP
bool "gunzip (11 kb)"
default y
select BUSYBOX_FEATURE_GZIP_DECOMPRESS
help
gunzip is used to decompress archives created by gzip.
You can use the '-t' option to test the integrity of
an archive, without decompressing it.
config BUSYBOX_ZCAT
bool "zcat (24 kb)"
default y
select BUSYBOX_FEATURE_GZIP_DECOMPRESS
help
Alias to "gunzip -c".
config BUSYBOX_FEATURE_GUNZIP_LONG_OPTIONS
bool "Enable long options"
default y
depends on (BUSYBOX_GUNZIP || BUSYBOX_ZCAT) && BUSYBOX_LONG_OPTS
config BUSYBOX_BUNZIP2
bool "bunzip2 (8.7 kb)"
default y
select BUSYBOX_FEATURE_BZIP2_DECOMPRESS
help
bunzip2 is a compression utility using the Burrows-Wheeler block
sorting text compression algorithm, and Huffman coding. Compression
is generally considerably better than that achieved by more
conventional LZ77/LZ78-based compressors, and approaches the
performance of the PPM family of statistical compressors.
Unless you have a specific application which requires bunzip2, you
should probably say N here.
config BUSYBOX_BZCAT
bool "bzcat (8.7 kb)"
default y
select BUSYBOX_FEATURE_BZIP2_DECOMPRESS
help
Alias to "bunzip2 -c".
config BUSYBOX_UNLZMA
bool "unlzma (7.5 kb)"
default y
help
unlzma is a compression utility using the Lempel-Ziv-Markov chain
compression algorithm, and range coding. Compression
is generally considerably better than that achieved by the bzip2
compressors.
config BUSYBOX_LZCAT
bool "lzcat (7.5 kb)"
default y
help
Alias to "unlzma -c".
config BUSYBOX_LZMA
bool "lzma -d"
default y
help
Enable this option if you want commands like "lzma -d" to work.
IOW: you'll get lzma applet, but it will always require -d option.
config BUSYBOX_UNXZ
bool "unxz (13 kb)"
default y
help
unxz is a unlzma successor.
config BUSYBOX_XZCAT
bool "xzcat (13 kb)"
default y
help
Alias to "unxz -c".
config BUSYBOX_XZ
bool "xz -d"
default y
help
Enable this option if you want commands like "xz -d" to work.
IOW: you'll get xz applet, but it will always require -d option.
config BUSYBOX_BZIP2
bool "bzip2 (16 kb)"
default y
help
bzip2 is a compression utility using the Burrows-Wheeler block
sorting text compression algorithm, and Huffman coding. Compression
is generally considerably better than that achieved by more
conventional LZ77/LZ78-based compressors, and approaches the
performance of the PPM family of statistical compressors.
Unless you have a specific application which requires bzip2, you
should probably say N here.
config BUSYBOX_BZIP2_SMALL
int "Trade bytes for speed (0:fast, 9:small)"
default 8 # all "fast or small" options default to small
range 0 9
depends on BUSYBOX_BZIP2
help
Trade code size versus speed.
Approximate values with gcc-6.3.0 "bzip -9" compressing
linux-4.15.tar were:
value time (sec) code size (386)
9 (smallest) 70.11 7687
8 67.93 8091
7 67.88 8405
6 67.78 8624
5 67.05 9427
4-0 (fastest) 64.14 12083
config BUSYBOX_FEATURE_BZIP2_DECOMPRESS
bool "Enable decompression"
default y
depends on BUSYBOX_BZIP2 || BUSYBOX_BUNZIP2 || BUSYBOX_BZCAT
help
Enable -d (--decompress) and -t (--test) options for bzip2.
This will be automatically selected if bunzip2 or bzcat is
enabled.
config BUSYBOX_CPIO
bool "cpio (15 kb)"
default y
help
cpio is an archival utility program used to create, modify, and
extract contents from archives.
cpio has 110 bytes of overheads for every stored file.
This implementation of cpio can extract cpio archives created in the
"newc" or "crc" format.
Unless you have a specific application which requires cpio, you
should probably say N here.
config BUSYBOX_FEATURE_CPIO_O
bool "Support archive creation"
default y
depends on BUSYBOX_CPIO
help
This implementation of cpio can create cpio archives in the "newc"
format only.
config BUSYBOX_FEATURE_CPIO_P
bool "Support passthrough mode"
default y
depends on BUSYBOX_FEATURE_CPIO_O
help
Passthrough mode. Rarely used.
config BUSYBOX_FEATURE_CPIO_IGNORE_DEVNO
bool "Support --ignore-devno like GNU cpio"
default y
depends on BUSYBOX_FEATURE_CPIO_O && BUSYBOX_LONG_OPTS
help
Optionally ignore device numbers when creating archives.
config BUSYBOX_FEATURE_CPIO_RENUMBER_INODES
bool "Support --renumber-inodes like GNU cpio"
default y
depends on BUSYBOX_FEATURE_CPIO_O && BUSYBOX_LONG_OPTS
help
Optionally renumber inodes when creating archives.
config BUSYBOX_DPKG
bool "dpkg (43 kb)"
default y
select BUSYBOX_FEATURE_SEAMLESS_GZ
help
dpkg is a medium-level tool to install, build, remove and manage
Debian packages.
This implementation of dpkg has a number of limitations,
you should use the official dpkg if possible.
config BUSYBOX_DPKG_DEB
bool "dpkg-deb (30 kb)"
default y
select BUSYBOX_FEATURE_SEAMLESS_GZ
help
dpkg-deb unpacks and provides information about Debian archives.
This implementation of dpkg-deb cannot pack archives.
Unless you have a specific application which requires dpkg-deb,
say N here.
config BUSYBOX_GZIP
bool "gzip (17 kb)"
default y
help
gzip is used to compress files.
It's probably the most widely used UNIX compression program.
config BUSYBOX_FEATURE_GZIP_LONG_OPTIONS
bool "Enable long options"
default y
depends on BUSYBOX_GZIP && BUSYBOX_LONG_OPTS
config BUSYBOX_GZIP_FAST
int "Trade memory for speed (0:small,slow - 2:fast,big)"
default 0
range 0 2
depends on BUSYBOX_GZIP
help
Enable big memory options for gzip.
0: small buffers, small hash-tables
1: larger buffers, larger hash-tables
2: larger buffers, largest hash-tables
Larger models may give slightly better compression
config BUSYBOX_FEATURE_GZIP_LEVELS
bool "Enable compression levels"
default n
depends on BUSYBOX_GZIP
help
Enable support for compression levels 4-9. The default level
is 6. If levels 1-3 are specified, 4 is used.
If this option is not selected, -N options are ignored and -6
is used.
config BUSYBOX_FEATURE_GZIP_DECOMPRESS
bool "Enable decompression"
default y
depends on BUSYBOX_GZIP || BUSYBOX_GUNZIP || BUSYBOX_ZCAT
help
Enable -d (--decompress) and -t (--test) options for gzip.
This will be automatically selected if gunzip or zcat is
enabled.
config BUSYBOX_IPKG
bool "ipkg"
default n
help
ipkg is a tool to install, build, remove and manage
packages.
config BUSYBOX_LZOP
bool "lzop (12 kb)"
default y
help
Lzop compression/decompresion.
config BUSYBOX_UNLZOP
bool "unlzop (13 kb)"
default n # INCOMPAT: upstream lzop does not provide such tool
help
Lzop decompresion.
config BUSYBOX_LZOPCAT
bool "lzopcat (13 kb)"
default n # INCOMPAT: upstream lzop does not provide such tool
help
Alias to "lzop -dc".
config BUSYBOX_LZOP_COMPR_HIGH
bool "lzop compression levels 7,8,9 (not very useful)"
default n
depends on BUSYBOX_LZOP || BUSYBOX_UNLZOP || BUSYBOX_LZOPCAT
help
High levels (7,8,9) of lzop compression. These levels
are actually slower than gzip at equivalent compression ratios
and take up 3.2K of code.
config BUSYBOX_RPM
bool "rpm (32 kb)"
default y
help
Mini RPM applet - queries and extracts RPM packages.
config BUSYBOX_RPM2CPIO
bool "rpm2cpio (21 kb)"
default y
help
Converts a RPM file into a CPIO archive.
config BUSYBOX_TAR
bool "tar (39 kb)"
default y
help
tar is an archiving program. It's commonly used with gzip to
create compressed archives. It's probably the most widely used
UNIX archive program.
config BUSYBOX_FEATURE_TAR_LONG_OPTIONS
bool "Enable long options"
default y
depends on BUSYBOX_TAR && BUSYBOX_LONG_OPTS
config BUSYBOX_FEATURE_TAR_CREATE
bool "Enable -c (archive creation)"
default y
depends on BUSYBOX_TAR
config BUSYBOX_FEATURE_TAR_AUTODETECT
bool "Autodetect compressed tarballs"
default y
depends on BUSYBOX_TAR && (BUSYBOX_FEATURE_SEAMLESS_Z || BUSYBOX_FEATURE_SEAMLESS_GZ || BUSYBOX_FEATURE_SEAMLESS_BZ2 || BUSYBOX_FEATURE_SEAMLESS_LZMA || BUSYBOX_FEATURE_SEAMLESS_XZ)
help
With this option tar can automatically detect compressed
tarballs. Currently it works only on files (not pipes etc).
config BUSYBOX_FEATURE_TAR_FROM
bool "Enable -X (exclude from) and -T (include from) options"
default y
depends on BUSYBOX_TAR
help
If you enable this option you'll be able to specify
a list of files to include or exclude from an archive.
config BUSYBOX_FEATURE_TAR_OLDGNU_COMPATIBILITY
bool "Support old tar header format"
default y
depends on BUSYBOX_TAR || BUSYBOX_DPKG
help
This option is required to unpack archives created in
the old GNU format; help to kill this old format by
repacking your ancient archives with the new format.
config BUSYBOX_FEATURE_TAR_OLDSUN_COMPATIBILITY
bool "Enable untarring of tarballs with checksums produced by buggy Sun tar"
default y
depends on BUSYBOX_TAR || BUSYBOX_DPKG
help
This option is required to unpack archives created by some old
version of Sun's tar (it was calculating checksum using signed
arithmetic). It is said to be fixed in newer Sun tar, but "old"
tarballs still exist.
config BUSYBOX_FEATURE_TAR_GNU_EXTENSIONS
bool "Support GNU tar extensions (long filenames)"
default y
depends on BUSYBOX_TAR || BUSYBOX_DPKG
config BUSYBOX_FEATURE_TAR_TO_COMMAND
bool "Support writing to an external program (--to-command)"
default y
depends on BUSYBOX_TAR && BUSYBOX_FEATURE_TAR_LONG_OPTIONS
help
If you enable this option you'll be able to instruct tar to send
the contents of each extracted file to the standard input of an
external program.
config BUSYBOX_FEATURE_TAR_UNAME_GNAME
bool "Enable use of user and group names"
default y
depends on BUSYBOX_TAR
help
Enable use of user and group names in tar. This affects contents
listings (-t) and preserving permissions when unpacking (-p).
+200 bytes.
config BUSYBOX_FEATURE_TAR_NOPRESERVE_TIME
bool "Enable -m (do not preserve time) GNU option"
default y
depends on BUSYBOX_TAR
config BUSYBOX_FEATURE_TAR_SELINUX
bool "Support extracting SELinux labels"
default n
depends on BUSYBOX_TAR && BUSYBOX_SELINUX
help
With this option busybox supports restoring SELinux labels
when extracting files from tar archives.
config BUSYBOX_UNZIP
bool "unzip (26 kb)"
default y
help
unzip will list or extract files from a ZIP archive,
commonly found on DOS/WIN systems. The default behavior
(with no options) is to extract the archive into the
current directory.
config BUSYBOX_FEATURE_UNZIP_CDF
bool "Read and use Central Directory data"
default y
depends on BUSYBOX_UNZIP
help
If you know that you only need to deal with simple
ZIP files without deleted/updated files, SFX archives etc,
you can reduce code size by unselecting this option.
To support less trivial ZIPs, say Y.
config BUSYBOX_FEATURE_UNZIP_BZIP2
bool "Support compression method 12 (bzip2)"
default y
depends on BUSYBOX_FEATURE_UNZIP_CDF && BUSYBOX_DESKTOP
config BUSYBOX_FEATURE_UNZIP_LZMA
bool "Support compression method 14 (lzma)"
default y
depends on BUSYBOX_FEATURE_UNZIP_CDF && BUSYBOX_DESKTOP
config BUSYBOX_FEATURE_UNZIP_XZ
bool "Support compression method 95 (xz)"
default y
depends on BUSYBOX_FEATURE_UNZIP_CDF && BUSYBOX_DESKTOP
config BUSYBOX_FEATURE_LZMA_FAST
bool "Optimize lzma for speed"
default n
depends on BUSYBOX_UNLZMA || BUSYBOX_LZCAT || BUSYBOX_LZMA || BUSYBOX_FEATURE_SEAMLESS_LZMA
help
This option reduces decompression time by about 25% at the cost of
a 1K bigger binary.
endmenu
|
