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Diffstat (limited to 'bzlib-src/CHANGES')
| -rw-r--r-- | bzlib-src/CHANGES | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/bzlib-src/CHANGES b/bzlib-src/CHANGES new file mode 100644 index 0000000..81e97ca --- /dev/null +++ b/bzlib-src/CHANGES @@ -0,0 +1,327 @@ + ------------------------------------------------------------------ + This file is part of bzip2/libbzip2, a program and library for + lossless, block-sorting data compression. + + bzip2/libbzip2 version 1.0.6 of 6 September 2010 + Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> + + Please read the WARNING, DISCLAIMER and PATENTS sections in the + README file. + + This program is released under the terms of the license contained + in the file LICENSE. + ------------------------------------------------------------------ + + +0.9.0 +~~~~~ +First version. + + +0.9.0a +~~~~~~ +Removed 'ranlib' from Makefile, since most modern Unix-es +don't need it, or even know about it. + + +0.9.0b +~~~~~~ +Fixed a problem with error reporting in bzip2.c. This does not effect +the library in any way. Problem is: versions 0.9.0 and 0.9.0a (of the +program proper) compress and decompress correctly, but give misleading +error messages (internal panics) when an I/O error occurs, instead of +reporting the problem correctly. This shouldn't give any data loss +(as far as I can see), but is confusing. + +Made the inline declarations disappear for non-GCC compilers. + + +0.9.0c +~~~~~~ +Fixed some problems in the library pertaining to some boundary cases. +This makes the library behave more correctly in those situations. The +fixes apply only to features (calls and parameters) not used by +bzip2.c, so the non-fixedness of them in previous versions has no +effect on reliability of bzip2.c. + +In bzlib.c: + * made zero-length BZ_FLUSH work correctly in bzCompress(). + * fixed bzWrite/bzRead to ignore zero-length requests. + * fixed bzread to correctly handle read requests after EOF. + * wrong parameter order in call to bzDecompressInit in + bzBuffToBuffDecompress. Fixed. + +In compress.c: + * changed setting of nGroups in sendMTFValues() so as to + do a bit better on small files. This _does_ effect + bzip2.c. + + +0.9.5a +~~~~~~ +Major change: add a fallback sorting algorithm (blocksort.c) +to give reasonable behaviour even for very repetitive inputs. +Nuked --repetitive-best and --repetitive-fast since they are +no longer useful. + +Minor changes: mostly a whole bunch of small changes/ +bugfixes in the driver (bzip2.c). Changes pertaining to the +user interface are: + + allow decompression of symlink'd files to stdout + decompress/test files even without .bz2 extension + give more accurate error messages for I/O errors + when compressing/decompressing to stdout, don't catch control-C + read flags from BZIP2 and BZIP environment variables + decline to break hard links to a file unless forced with -f + allow -c flag even with no filenames + preserve file ownerships as far as possible + make -s -1 give the expected block size (100k) + add a flag -q --quiet to suppress nonessential warnings + stop decoding flags after --, so files beginning in - can be handled + resolved inconsistent naming: bzcat or bz2cat ? + bzip2 --help now returns 0 + +Programming-level changes are: + + fixed syntax error in GET_LL4 for Borland C++ 5.02 + let bzBuffToBuffDecompress return BZ_DATA_ERROR{_MAGIC} + fix overshoot of mode-string end in bzopen_or_bzdopen + wrapped bzlib.h in #ifdef __cplusplus ... extern "C" { ... } + close file handles under all error conditions + added minor mods so it compiles with DJGPP out of the box + fixed Makefile so it doesn't give problems with BSD make + fix uninitialised memory reads in dlltest.c + +0.9.5b +~~~~~~ +Open stdin/stdout in binary mode for DJGPP. + +0.9.5c +~~~~~~ +Changed BZ_N_OVERSHOOT to be ... + 2 instead of ... + 1. The + 1 +version could cause the sorted order to be wrong in some extremely +obscure cases. Also changed setting of quadrant in blocksort.c. + +0.9.5d +~~~~~~ +The only functional change is to make bzlibVersion() in the library +return the correct string. This has no effect whatsoever on the +functioning of the bzip2 program or library. Added a couple of casts +so the library compiles without warnings at level 3 in MS Visual +Studio 6.0. Included a Y2K statement in the file Y2K_INFO. All other +changes are minor documentation changes. + +1.0 +~~~ +Several minor bugfixes and enhancements: + +* Large file support. The library uses 64-bit counters to + count the volume of data passing through it. bzip2.c + is now compiled with -D_FILE_OFFSET_BITS=64 to get large + file support from the C library. -v correctly prints out + file sizes greater than 4 gigabytes. All these changes have + been made without assuming a 64-bit platform or a C compiler + which supports 64-bit ints, so, except for the C library + aspect, they are fully portable. + +* Decompression robustness. The library/program should be + robust to any corruption of compressed data, detecting and + handling _all_ corruption, instead of merely relying on + the CRCs. What this means is that the program should + never crash, given corrupted data, and the library should + always return BZ_DATA_ERROR. + +* Fixed an obscure race-condition bug only ever observed on + Solaris, in which, if you were very unlucky and issued + control-C at exactly the wrong time, both input and output + files would be deleted. + +* Don't run out of file handles on test/decompression when + large numbers of files have invalid magic numbers. + +* Avoid library namespace pollution. Prefix all exported + symbols with BZ2_. + +* Minor sorting enhancements from my DCC2000 paper. + +* Advance the version number to 1.0, so as to counteract the + (false-in-this-case) impression some people have that programs + with version numbers less than 1.0 are in some way, experimental, + pre-release versions. + +* Create an initial Makefile-libbz2_so to build a shared library. + Yes, I know I should really use libtool et al ... + +* Make the program exit with 2 instead of 0 when decompression + fails due to a bad magic number (ie, an invalid bzip2 header). + Also exit with 1 (as the manual claims :-) whenever a diagnostic + message would have been printed AND the corresponding operation + is aborted, for example + bzip2: Output file xx already exists. + When a diagnostic message is printed but the operation is not + aborted, for example + bzip2: Can't guess original name for wurble -- using wurble.out + then the exit value 0 is returned, unless some other problem is + also detected. + + I think it corresponds more closely to what the manual claims now. + + +1.0.1 +~~~~~ +* Modified dlltest.c so it uses the new BZ2_ naming scheme. +* Modified makefile-msc to fix minor build probs on Win2k. +* Updated README.COMPILATION.PROBLEMS. + +There are no functionality changes or bug fixes relative to version +1.0.0. This is just a documentation update + a fix for minor Win32 +build problems. For almost everyone, upgrading from 1.0.0 to 1.0.1 is +utterly pointless. Don't bother. + + +1.0.2 +~~~~~ +A bug fix release, addressing various minor issues which have appeared +in the 18 or so months since 1.0.1 was released. Most of the fixes +are to do with file-handling or documentation bugs. To the best of my +knowledge, there have been no data-loss-causing bugs reported in the +compression/decompression engine of 1.0.0 or 1.0.1. + +Note that this release does not improve the rather crude build system +for Unix platforms. The general plan here is to autoconfiscate/ +libtoolise 1.0.2 soon after release, and release the result as 1.1.0 +or perhaps 1.2.0. That, however, is still just a plan at this point. + +Here are the changes in 1.0.2. Bug-reporters and/or patch-senders in +parentheses. + +* Fix an infinite segfault loop in 1.0.1 when a directory is + encountered in -f (force) mode. + (Trond Eivind Glomsrod, Nicholas Nethercote, Volker Schmidt) + +* Avoid double fclose() of output file on certain I/O error paths. + (Solar Designer) + +* Don't fail with internal error 1007 when fed a long stream (> 48MB) + of byte 251. Also print useful message suggesting that 1007s may be + caused by bad memory. + (noticed by Juan Pedro Vallejo, fixed by me) + +* Fix uninitialised variable silly bug in demo prog dlltest.c. + (Jorj Bauer) + +* Remove 512-MB limitation on recovered file size for bzip2recover + on selected platforms which support 64-bit ints. At the moment + all GCC supported platforms, and Win32. + (me, Alson van der Meulen) + +* Hard-code header byte values, to give correct operation on platforms + using EBCDIC as their native character set (IBM's OS/390). + (Leland Lucius) + +* Copy file access times correctly. + (Marty Leisner) + +* Add distclean and check targets to Makefile. + (Michael Carmack) + +* Parameterise use of ar and ranlib in Makefile. Also add $(LDFLAGS). + (Rich Ireland, Bo Thorsen) + +* Pass -p (create parent dirs as needed) to mkdir during make install. + (Jeremy Fusco) + +* Dereference symlinks when copying file permissions in -f mode. + (Volker Schmidt) + +* Majorly simplify implementation of uInt64_qrm10. + (Bo Lindbergh) + +* Check the input file still exists before deleting the output one, + when aborting in cleanUpAndFail(). + (Joerg Prante, Robert Linden, Matthias Krings) + +Also a bunch of patches courtesy of Philippe Troin, the Debian maintainer +of bzip2: + +* Wrapper scripts (with manpages): bzdiff, bzgrep, bzmore. + +* Spelling changes and minor enhancements in bzip2.1. + +* Avoid race condition between creating the output file and setting its + interim permissions safely, by using fopen_output_safely(). + No changes to bzip2recover since there is no issue with file + permissions there. + +* do not print senseless report with -v when compressing an empty + file. + +* bzcat -f works on non-bzip2 files. + +* do not try to escape shell meta-characters on unix (the shell takes + care of these). + +* added --fast and --best aliases for -1 -9 for gzip compatibility. + + +1.0.3 (15 Feb 05) +~~~~~~~~~~~~~~~~~ +Fixes some minor bugs since the last version, 1.0.2. + +* Further robustification against corrupted compressed data. + There are currently no known bitstreams which can cause the + decompressor to crash, loop or access memory which does not + belong to it. If you are using bzip2 or the library to + decompress bitstreams from untrusted sources, an upgrade + to 1.0.3 is recommended. This fixes CAN-2005-1260. + +* The documentation has been converted to XML, from which html + and pdf can be derived. + +* Various minor bugs in the documentation have been fixed. + +* Fixes for various compilation warnings with newer versions of + gcc, and on 64-bit platforms. + +* The BZ_NO_STDIO cpp symbol was not properly observed in 1.0.2. + This has been fixed. + + +1.0.4 (20 Dec 06) +~~~~~~~~~~~~~~~~~ +Fixes some minor bugs since the last version, 1.0.3. + +* Fix file permissions race problem (CAN-2005-0953). + +* Avoid possible segfault in BZ2_bzclose. From Coverity's NetBSD + scan. + +* 'const'/prototype cleanups in the C code. + +* Change default install location to /usr/local, and handle multiple + 'make install's without error. + +* Sanitise file names more carefully in bzgrep. Fixes CAN-2005-0758 + to the extent that applies to bzgrep. + +* Use 'mktemp' rather than 'tempfile' in bzdiff. + +* Tighten up a couple of assertions in blocksort.c following automated + analysis. + +* Fix minor doc/comment bugs. + + +1.0.5 (10 Dec 07) +~~~~~~~~~~~~~~~~~ +Security fix only. Fixes CERT-FI 20469 as it applies to bzip2. + + +1.0.6 (6 Sept 10) +~~~~~~~~~~~~~~~~~ + +* Security fix for CVE-2010-0405. This was reported by Mikolaj + Izdebski. + +* Make the documentation build on Ubuntu 10.04 |