Run alternative decompression programs if the principal one is not available.

[chaz/tar] / NEWS

diff --git a/NEWS b/NEWS
index db7cae24157e29efde1d0802ffd6b8e9638cb29c..66d9c880e0b0ea34190298582858f0517503e645 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,8 +1,8 @@
-GNU tar NEWS - User visible changes. 2010-09-13
+GNU tar NEWS - User visible changes. 2010-10-24

 Please send GNU tar bug reports to <bug-tar@gnu.org>
 
 \f
 Please send GNU tar bug reports to <bug-tar@gnu.org>
 
 \f

-version 1.23.90 - (Git)
+version 1.24 - Sergey Poznyakoff, 2010-10-24

 
 * The --full-time option.
 
 
 * The --full-time option.
 


@@ -17,12 +17,38 @@ Tar now checks for inconsistencies caused when a file system is
 modified while tar is creating an archive.  In the new approach, tar
 maintains a cache of file descriptors to directories, so it uses more
 file descriptors than before, but it adjusts to system limits on
 modified while tar is creating an archive.  In the new approach, tar
 maintains a cache of file descriptors to directories, so it uses more
 file descriptors than before, but it adjusts to system limits on

-the number of file descriptors.  The new checks are implemented via
-the openat, dirfd, fdopendir, fstatat, and readlinkat calls
+the number of file descriptors.  Tar also takes more care when
+a file system is modified while tar is extracting from an archive.
+
+The new checks are implemented via the openat and related calls

 standardized by POSIX.1-2008.  On an older system where these calls do
 not exist or do not return useful results, tar emulates the calls at
 some cost in efficiency and reliability.
 
 standardized by POSIX.1-2008.  On an older system where these calls do
 not exist or do not return useful results, tar emulates the calls at
 some cost in efficiency and reliability.
 

+** Symbolic link attributes
+
+When extracting symbolic links, tar now restores attributes such as
+last-modified time and link permissions, if the operating system
+supports this.  For example, recent versions of the Linux kernel
+support setting times on symlinks, and some BSD kernels also support
+symlink permissions.
+
+** --dereference consistency
+
+The --dereference (-h) option now applies to files that are copied
+into or out of archives, independently of other options.  For example,
+if F is a symbolic link and archive.tar contains a regular-file member
+also named F, "tar --overwrite -x -f archive.tar F" now overwrites F
+itself, rather than the file that F points to.  (To overwrite the file
+that F points to, add the --dereference (-h) option.)  Formerly,
+--dereference was intended to apply only when using the -c option, but
+the implementation was not consistent.
+
+Also, the --dereference option no longer affects accesses to other
+files, such as archives and time stamp files.  Symbolic links to these
+files are always followed.  Previously, the links were usually but not
+always followed.
+

 ** Spurious error diagnostics on broken pipe.
 
 When receiving SIGPIPE, tar would exit with error status and
 ** Spurious error diagnostics on broken pipe.
 
 When receiving SIGPIPE, tar would exit with error status and


@@ -33,7 +59,7 @@ invoked as in the example below:
 
 ** --remove-files
 
 
 ** --remove-files
 

-Tar --remove-files failed to remove a directory which contained
+`Tar --remove-files' failed to remove a directory which contained

 symlinks to another files within that directory.
 
 ** --test-label behavior
 symlinks to another files within that directory.
 
 ** --test-label behavior