X-Git-Url: https://git.cworth.org/git?p=tar;a=blobdiff_plain;f=NEWS;h=32542665ad6084012021af7cd198d6a12598dfb4;hp=41b30ea9214dc16cc49feb9933d43ea8fb950e7e;hb=99037e4dd8259806e7e3880fa33d44eed520b3b7;hpb=c286dbf484dc985fb63d5c677fc8cd91b5b1d0f6 diff --git a/NEWS b/NEWS index 41b30ea..3254266 100644 --- a/NEWS +++ b/NEWS @@ -1,6 +1,141 @@ -GNU tar NEWS - User visible changes. 2008-12-27 +GNU tar NEWS - User visible changes. 2010-03-10 Please send GNU tar bug reports to + +version 1.23 - Sergey Poznyakoff, 2010-03-10 + +* Record size autodetection + +When listing or extracting archives, the actual record size is +reported only if the archive is read from a device (as opposed +to regular files and pipes). + +* Seekable archives + +When a read-only operation (e.g. --list or --extract) is requested +on a regular file, tar attemtps to speed up accesses by using lseek. + +* New command line option `--warning' + +The `--warning' command line option allows to suppress or enable +particular warning messages during `tar' run. It takes a single +argument (a `keyword'), identifying the class of warning messages +to affect. If the argument is prefixed with `no-', such warning +messages are suppressed. For example, + + tar --warning=no-alone-zero-block -x -f archive + +suppresses the output of `A lone zero block' diagnostics, which is +normally issued if `archive' ends with a single block of zeros. + +See Tar Manual, section 3.9 "Controlling Warning Messages", for a +detailed discussion. + +* New command line option `--level' + +The `--level=N' option sets the incremental dump level N. It +is valid when used in conjunction with the -c and --listed-incremental +options. So far the only meaningful value for N is 0. The +`--level=0' option forces creating the level 0 dump, by truncating +the snapshot file if it exists. + +* Files removed during incremental dumps + +If a file or directory is removed while incremental dump is +in progress, tar exact actions depend on whether this file +was explicitly listed in the command line, or was found +during file system scan. + +If the file was explicitly listed in the command line, tar +issues error message and exits with the code 2, meaning +fatal error. + +Otherwise, if the file was found during the file system scan, +tar issues a warning, saying "File removed before we read it", +and sets exit code to 1, which means "some files differ". +If the --warning=no-file-removed option is given, no warning +is issued and exit code remains 0. + +* Modification times of PAX extended headers. + +Modification times in ustar header blocks of extended headers +are set to mtimes of the corresponding archive members. This +can be overridden by the + + --pax-opion='exthdr.mtime=STRING' + +command line option. The STRING is either number of seconds since +the Epoch or a `Time reference' (see below). + +Modification times in ustar header blocks of global extended +headers are set to the time when tar was invoked. + +This can be overridden by the + + --pax-opion='globexthdr.mtime=STRING' + +command line option. The STRING is either number of seconds since +the Epoch or a `Time reference' (see below). + +* Time references in --pax-option argument. + +Any value from the --pax-option argument that is enclosed in a pair +of curly braces represents a time reference. The string between the +braces is understood either as a textual time representation, as described in +chapter 7, "Date input formats", of the Tar manual, or as a name of +an existing file, starting with `/' or `.'. In the latter +case, it is replaced with the modification time of that file. + +* Environment of --to-command script. + +The environment passed to the --to-command script is extended with +the following variables: + + TAR_VERSION GNU tar version number + TAR_ARCHIVE The name of the archive + TAR_VOLUME Ordinal number of the volume + TAR_FORMAT Format of the archive + TAR_BLOCKING_FACTOR Current blocking factor + +* Bugfixes +** Fix handling of hard link targets by -c --transform. +** Fix hard links recognition with -c --remove-files. +** Fix restoring files from backup (debian bug #508199). +** Correctly restore modes and permissions on existing directories. +** The --remove-files option removes files only if they were +succesfully stored in the archive. +** Fix storing and listing of the volume labels in POSIX format. +** Improve algorithm for splitting long file names (ustar +format). +** Fix possible memory overflow in the rmt client code (CVE-2010-0624). + + +version 1.22 - Sergey Poznyakoff, 2009-03-05 + +* Support for xz compression + +Tar uses xz for compression if one of the following conditions is met: + + 1. The option --xz or -J (see below) is used. + 2. The xz binary is set as compressor using --use-compress-program option. + 3. The file name of the archive being created ends in `.xz' and + auto-compress option (-a) is used. + +Xz is used for decompression if one of the following conditions is met: + + 1. The option --xz or -J is used. + 2. The xz binary is set as compressor using --use-compress-program option. + 3. The file is recognized as xz compressed stream data. + +* Short option -J reassigned as a short equivalent of --xz + +* New option -I + +The -I option is assigned as a short equivalent for +--use-compress-program. + +* The --no-recursive option works in incremental mode. + version 1.21 - Sergey Poznyakoff, 2008-12-27 @@ -1064,7 +1199,7 @@ Versions 1.07 back to 1.00 by Jay Fenlason. Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, -2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of GNU tar.