tar: more reliable directory traversal when creating archives

[chaz/tar] / NEWS

diff --git a/NEWS b/NEWS
index d6712d0fdf660691e242b49815bd0f868c8d3aeb..b305f26a27348edb86cf13b53980b832d5cfa5c0 100644 (file)
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+++ b/NEWS
@@ -1,4 +1,4 @@
-GNU tar NEWS - User visible changes. 2010-07-16
+GNU tar NEWS - User visible changes. 2010-09-06
 Please send GNU tar bug reports to <bug-tar@gnu.org>
 
 \f
@@ -11,6 +11,14 @@ time stamps to the full resolution.
 
 * Bugfixes.
 
+** More reliable directory traversal when creating archives
+
+Tar now checks for inconsistencies caused when a file system is
+modified while tar is creating an archive.  The new checks are
+implemented via the openat, fstatat, and readlinkat calls standardized
+by POSIX.1-2008.  On an older system that lacks these calls, tar
+emulates them at some cost in efficiency and reliability.
+
 ** Spurious error diagnostics on broken pipe.
 
 When receiving SIGPIPE, tar would exit with error status and