The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 1 | ------------------------------------------------------------------ |
| 2 | This file is part of bzip2/libbzip2, a program and library for |
| 3 | lossless, block-sorting data compression. |
| 4 | |
Nick Kralevich | 172b266 | 2010-09-20 17:21:30 -0700 | [diff] [blame] | 5 | bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
| 6 | Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
The Android Open Source Project | cfb3b27 | 2009-03-03 19:29:20 -0800 | [diff] [blame] | 7 | |
| 8 | Please read the WARNING, DISCLAIMER and PATENTS sections in the |
| 9 | README file. |
| 10 | |
| 11 | This program is released under the terms of the license contained |
| 12 | in the file LICENSE. |
| 13 | ------------------------------------------------------------------ |
| 14 | |
| 15 | |
| 16 | 0.9.0 |
| 17 | ~~~~~ |
| 18 | First version. |
| 19 | |
| 20 | |
| 21 | 0.9.0a |
| 22 | ~~~~~~ |
| 23 | Removed 'ranlib' from Makefile, since most modern Unix-es |
| 24 | don't need it, or even know about it. |
| 25 | |
| 26 | |
| 27 | 0.9.0b |
| 28 | ~~~~~~ |
| 29 | Fixed a problem with error reporting in bzip2.c. This does not effect |
| 30 | the library in any way. Problem is: versions 0.9.0 and 0.9.0a (of the |
| 31 | program proper) compress and decompress correctly, but give misleading |
| 32 | error messages (internal panics) when an I/O error occurs, instead of |
| 33 | reporting the problem correctly. This shouldn't give any data loss |
| 34 | (as far as I can see), but is confusing. |
| 35 | |
| 36 | Made the inline declarations disappear for non-GCC compilers. |
| 37 | |
| 38 | |
| 39 | 0.9.0c |
| 40 | ~~~~~~ |
| 41 | Fixed some problems in the library pertaining to some boundary cases. |
| 42 | This makes the library behave more correctly in those situations. The |
| 43 | fixes apply only to features (calls and parameters) not used by |
| 44 | bzip2.c, so the non-fixedness of them in previous versions has no |
| 45 | effect on reliability of bzip2.c. |
| 46 | |
| 47 | In bzlib.c: |
| 48 | * made zero-length BZ_FLUSH work correctly in bzCompress(). |
| 49 | * fixed bzWrite/bzRead to ignore zero-length requests. |
| 50 | * fixed bzread to correctly handle read requests after EOF. |
| 51 | * wrong parameter order in call to bzDecompressInit in |
| 52 | bzBuffToBuffDecompress. Fixed. |
| 53 | |
| 54 | In compress.c: |
| 55 | * changed setting of nGroups in sendMTFValues() so as to |
| 56 | do a bit better on small files. This _does_ effect |
| 57 | bzip2.c. |
| 58 | |
| 59 | |
| 60 | 0.9.5a |
| 61 | ~~~~~~ |
| 62 | Major change: add a fallback sorting algorithm (blocksort.c) |
| 63 | to give reasonable behaviour even for very repetitive inputs. |
| 64 | Nuked --repetitive-best and --repetitive-fast since they are |
| 65 | no longer useful. |
| 66 | |
| 67 | Minor changes: mostly a whole bunch of small changes/ |
| 68 | bugfixes in the driver (bzip2.c). Changes pertaining to the |
| 69 | user interface are: |
| 70 | |
| 71 | allow decompression of symlink'd files to stdout |
| 72 | decompress/test files even without .bz2 extension |
| 73 | give more accurate error messages for I/O errors |
| 74 | when compressing/decompressing to stdout, don't catch control-C |
| 75 | read flags from BZIP2 and BZIP environment variables |
| 76 | decline to break hard links to a file unless forced with -f |
| 77 | allow -c flag even with no filenames |
| 78 | preserve file ownerships as far as possible |
| 79 | make -s -1 give the expected block size (100k) |
| 80 | add a flag -q --quiet to suppress nonessential warnings |
| 81 | stop decoding flags after --, so files beginning in - can be handled |
| 82 | resolved inconsistent naming: bzcat or bz2cat ? |
| 83 | bzip2 --help now returns 0 |
| 84 | |
| 85 | Programming-level changes are: |
| 86 | |
| 87 | fixed syntax error in GET_LL4 for Borland C++ 5.02 |
| 88 | let bzBuffToBuffDecompress return BZ_DATA_ERROR{_MAGIC} |
| 89 | fix overshoot of mode-string end in bzopen_or_bzdopen |
| 90 | wrapped bzlib.h in #ifdef __cplusplus ... extern "C" { ... } |
| 91 | close file handles under all error conditions |
| 92 | added minor mods so it compiles with DJGPP out of the box |
| 93 | fixed Makefile so it doesn't give problems with BSD make |
| 94 | fix uninitialised memory reads in dlltest.c |
| 95 | |
| 96 | 0.9.5b |
| 97 | ~~~~~~ |
| 98 | Open stdin/stdout in binary mode for DJGPP. |
| 99 | |
| 100 | 0.9.5c |
| 101 | ~~~~~~ |
| 102 | Changed BZ_N_OVERSHOOT to be ... + 2 instead of ... + 1. The + 1 |
| 103 | version could cause the sorted order to be wrong in some extremely |
| 104 | obscure cases. Also changed setting of quadrant in blocksort.c. |
| 105 | |
| 106 | 0.9.5d |
| 107 | ~~~~~~ |
| 108 | The only functional change is to make bzlibVersion() in the library |
| 109 | return the correct string. This has no effect whatsoever on the |
| 110 | functioning of the bzip2 program or library. Added a couple of casts |
| 111 | so the library compiles without warnings at level 3 in MS Visual |
| 112 | Studio 6.0. Included a Y2K statement in the file Y2K_INFO. All other |
| 113 | changes are minor documentation changes. |
| 114 | |
| 115 | 1.0 |
| 116 | ~~~ |
| 117 | Several minor bugfixes and enhancements: |
| 118 | |
| 119 | * Large file support. The library uses 64-bit counters to |
| 120 | count the volume of data passing through it. bzip2.c |
| 121 | is now compiled with -D_FILE_OFFSET_BITS=64 to get large |
| 122 | file support from the C library. -v correctly prints out |
| 123 | file sizes greater than 4 gigabytes. All these changes have |
| 124 | been made without assuming a 64-bit platform or a C compiler |
| 125 | which supports 64-bit ints, so, except for the C library |
| 126 | aspect, they are fully portable. |
| 127 | |
| 128 | * Decompression robustness. The library/program should be |
| 129 | robust to any corruption of compressed data, detecting and |
| 130 | handling _all_ corruption, instead of merely relying on |
| 131 | the CRCs. What this means is that the program should |
| 132 | never crash, given corrupted data, and the library should |
| 133 | always return BZ_DATA_ERROR. |
| 134 | |
| 135 | * Fixed an obscure race-condition bug only ever observed on |
| 136 | Solaris, in which, if you were very unlucky and issued |
| 137 | control-C at exactly the wrong time, both input and output |
| 138 | files would be deleted. |
| 139 | |
| 140 | * Don't run out of file handles on test/decompression when |
| 141 | large numbers of files have invalid magic numbers. |
| 142 | |
| 143 | * Avoid library namespace pollution. Prefix all exported |
| 144 | symbols with BZ2_. |
| 145 | |
| 146 | * Minor sorting enhancements from my DCC2000 paper. |
| 147 | |
| 148 | * Advance the version number to 1.0, so as to counteract the |
| 149 | (false-in-this-case) impression some people have that programs |
| 150 | with version numbers less than 1.0 are in some way, experimental, |
| 151 | pre-release versions. |
| 152 | |
| 153 | * Create an initial Makefile-libbz2_so to build a shared library. |
| 154 | Yes, I know I should really use libtool et al ... |
| 155 | |
| 156 | * Make the program exit with 2 instead of 0 when decompression |
| 157 | fails due to a bad magic number (ie, an invalid bzip2 header). |
| 158 | Also exit with 1 (as the manual claims :-) whenever a diagnostic |
| 159 | message would have been printed AND the corresponding operation |
| 160 | is aborted, for example |
| 161 | bzip2: Output file xx already exists. |
| 162 | When a diagnostic message is printed but the operation is not |
| 163 | aborted, for example |
| 164 | bzip2: Can't guess original name for wurble -- using wurble.out |
| 165 | then the exit value 0 is returned, unless some other problem is |
| 166 | also detected. |
| 167 | |
| 168 | I think it corresponds more closely to what the manual claims now. |
| 169 | |
| 170 | |
| 171 | 1.0.1 |
| 172 | ~~~~~ |
| 173 | * Modified dlltest.c so it uses the new BZ2_ naming scheme. |
| 174 | * Modified makefile-msc to fix minor build probs on Win2k. |
| 175 | * Updated README.COMPILATION.PROBLEMS. |
| 176 | |
| 177 | There are no functionality changes or bug fixes relative to version |
| 178 | 1.0.0. This is just a documentation update + a fix for minor Win32 |
| 179 | build problems. For almost everyone, upgrading from 1.0.0 to 1.0.1 is |
| 180 | utterly pointless. Don't bother. |
| 181 | |
| 182 | |
| 183 | 1.0.2 |
| 184 | ~~~~~ |
| 185 | A bug fix release, addressing various minor issues which have appeared |
| 186 | in the 18 or so months since 1.0.1 was released. Most of the fixes |
| 187 | are to do with file-handling or documentation bugs. To the best of my |
| 188 | knowledge, there have been no data-loss-causing bugs reported in the |
| 189 | compression/decompression engine of 1.0.0 or 1.0.1. |
| 190 | |
| 191 | Note that this release does not improve the rather crude build system |
| 192 | for Unix platforms. The general plan here is to autoconfiscate/ |
| 193 | libtoolise 1.0.2 soon after release, and release the result as 1.1.0 |
| 194 | or perhaps 1.2.0. That, however, is still just a plan at this point. |
| 195 | |
| 196 | Here are the changes in 1.0.2. Bug-reporters and/or patch-senders in |
| 197 | parentheses. |
| 198 | |
| 199 | * Fix an infinite segfault loop in 1.0.1 when a directory is |
| 200 | encountered in -f (force) mode. |
| 201 | (Trond Eivind Glomsrod, Nicholas Nethercote, Volker Schmidt) |
| 202 | |
| 203 | * Avoid double fclose() of output file on certain I/O error paths. |
| 204 | (Solar Designer) |
| 205 | |
| 206 | * Don't fail with internal error 1007 when fed a long stream (> 48MB) |
| 207 | of byte 251. Also print useful message suggesting that 1007s may be |
| 208 | caused by bad memory. |
| 209 | (noticed by Juan Pedro Vallejo, fixed by me) |
| 210 | |
| 211 | * Fix uninitialised variable silly bug in demo prog dlltest.c. |
| 212 | (Jorj Bauer) |
| 213 | |
| 214 | * Remove 512-MB limitation on recovered file size for bzip2recover |
| 215 | on selected platforms which support 64-bit ints. At the moment |
| 216 | all GCC supported platforms, and Win32. |
| 217 | (me, Alson van der Meulen) |
| 218 | |
| 219 | * Hard-code header byte values, to give correct operation on platforms |
| 220 | using EBCDIC as their native character set (IBM's OS/390). |
| 221 | (Leland Lucius) |
| 222 | |
| 223 | * Copy file access times correctly. |
| 224 | (Marty Leisner) |
| 225 | |
| 226 | * Add distclean and check targets to Makefile. |
| 227 | (Michael Carmack) |
| 228 | |
| 229 | * Parameterise use of ar and ranlib in Makefile. Also add $(LDFLAGS). |
| 230 | (Rich Ireland, Bo Thorsen) |
| 231 | |
| 232 | * Pass -p (create parent dirs as needed) to mkdir during make install. |
| 233 | (Jeremy Fusco) |
| 234 | |
| 235 | * Dereference symlinks when copying file permissions in -f mode. |
| 236 | (Volker Schmidt) |
| 237 | |
| 238 | * Majorly simplify implementation of uInt64_qrm10. |
| 239 | (Bo Lindbergh) |
| 240 | |
| 241 | * Check the input file still exists before deleting the output one, |
| 242 | when aborting in cleanUpAndFail(). |
| 243 | (Joerg Prante, Robert Linden, Matthias Krings) |
| 244 | |
| 245 | Also a bunch of patches courtesy of Philippe Troin, the Debian maintainer |
| 246 | of bzip2: |
| 247 | |
| 248 | * Wrapper scripts (with manpages): bzdiff, bzgrep, bzmore. |
| 249 | |
| 250 | * Spelling changes and minor enhancements in bzip2.1. |
| 251 | |
| 252 | * Avoid race condition between creating the output file and setting its |
| 253 | interim permissions safely, by using fopen_output_safely(). |
| 254 | No changes to bzip2recover since there is no issue with file |
| 255 | permissions there. |
| 256 | |
| 257 | * do not print senseless report with -v when compressing an empty |
| 258 | file. |
| 259 | |
| 260 | * bzcat -f works on non-bzip2 files. |
| 261 | |
| 262 | * do not try to escape shell meta-characters on unix (the shell takes |
| 263 | care of these). |
| 264 | |
| 265 | * added --fast and --best aliases for -1 -9 for gzip compatibility. |
| 266 | |
| 267 | |
| 268 | 1.0.3 (15 Feb 05) |
| 269 | ~~~~~~~~~~~~~~~~~ |
| 270 | Fixes some minor bugs since the last version, 1.0.2. |
| 271 | |
| 272 | * Further robustification against corrupted compressed data. |
| 273 | There are currently no known bitstreams which can cause the |
| 274 | decompressor to crash, loop or access memory which does not |
| 275 | belong to it. If you are using bzip2 or the library to |
| 276 | decompress bitstreams from untrusted sources, an upgrade |
| 277 | to 1.0.3 is recommended. This fixes CAN-2005-1260. |
| 278 | |
| 279 | * The documentation has been converted to XML, from which html |
| 280 | and pdf can be derived. |
| 281 | |
| 282 | * Various minor bugs in the documentation have been fixed. |
| 283 | |
| 284 | * Fixes for various compilation warnings with newer versions of |
| 285 | gcc, and on 64-bit platforms. |
| 286 | |
| 287 | * The BZ_NO_STDIO cpp symbol was not properly observed in 1.0.2. |
| 288 | This has been fixed. |
| 289 | |
| 290 | |
| 291 | 1.0.4 (20 Dec 06) |
| 292 | ~~~~~~~~~~~~~~~~~ |
| 293 | Fixes some minor bugs since the last version, 1.0.3. |
| 294 | |
| 295 | * Fix file permissions race problem (CAN-2005-0953). |
| 296 | |
| 297 | * Avoid possible segfault in BZ2_bzclose. From Coverity's NetBSD |
| 298 | scan. |
| 299 | |
| 300 | * 'const'/prototype cleanups in the C code. |
| 301 | |
| 302 | * Change default install location to /usr/local, and handle multiple |
| 303 | 'make install's without error. |
| 304 | |
| 305 | * Sanitise file names more carefully in bzgrep. Fixes CAN-2005-0758 |
| 306 | to the extent that applies to bzgrep. |
| 307 | |
| 308 | * Use 'mktemp' rather than 'tempfile' in bzdiff. |
| 309 | |
| 310 | * Tighten up a couple of assertions in blocksort.c following automated |
| 311 | analysis. |
| 312 | |
| 313 | * Fix minor doc/comment bugs. |
| 314 | |
| 315 | |
| 316 | 1.0.5 (10 Dec 07) |
| 317 | ~~~~~~~~~~~~~~~~~ |
| 318 | Security fix only. Fixes CERT-FI 20469 as it applies to bzip2. |
| 319 | |
Nick Kralevich | 172b266 | 2010-09-20 17:21:30 -0700 | [diff] [blame] | 320 | |
| 321 | 1.0.6 (6 Sept 10) |
| 322 | ~~~~~~~~~~~~~~~~~ |
| 323 | |
| 324 | * Security fix for CVE-2010-0405. This was reported by Mikolaj |
| 325 | Izdebski. |
| 326 | |
| 327 | * Make the documentation build on Ubuntu 10.04 |