Doc changes.

[chaz/tar] / NEWS

diff --git a/NEWS b/NEWS
index 4dba114020cb77dfd6e38f147ae556781b997e78..c1df7e5e8c6b84e42c7420c8bae46724c9c09276 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,8 +1,8 @@
-GNU tar NEWS - User visible changes. 2009-08-05
+GNU tar NEWS - User visible changes. 2010-03-10
 Please send GNU tar bug reports to <bug-tar@gnu.org>
 
 \f
-version 1.22.90 (Git)
+version 1.22.91 (Git)
 
 * Record size autodetection
 
@@ -10,6 +10,11 @@ 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
@@ -23,11 +28,86 @@ messages are suppressed.  For example,
 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 gathered
+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 gathered during the file system
+scan, tar issues a warning, saying "File removed before we read it",
+and sets the exit code to 1, which means "some files differ".
+If the --warning=no-file-removed option is given, no warning
+is issued and the exit code remains 0.
+
+* Modification times of PAX extended headers.
+
+Modification times in the ustar header blocks for the 
+extended headers are set to the mtimes of the corresponding archive
+members.  This can be overridden by the
+
+  --pax-opion='exthdr.mtime=STRING'
+
+command line option.  The STRING is either the number of seconds since
+the Epoch or a `Time reference' (see below).
+
+Modification times in the ustar header blocks for the 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 the 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, the value 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 the 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).
 
 \f
 version 1.22 - Sergey Poznyakoff, 2009-03-05
@@ -1119,7 +1199,7 @@ Versions 1.07 back to 1.00 by Jay Fenlason.
 \f
 
 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.