Update erl_tar to support PAX format, etc.

This commit introduces the following key changes:

- Support for reading tar archives in formats currently in common use,
  such as v7, STAR, USTAR, PAX, and GNU tar's extensions to the
  STAR/USTAR format.
- Support for writing PAX archives, only when necessary, using USTAR
  when possible for greater portability.

These changes result in lifting of some prior restrictions:

- Support for reading archives produced by modern tar implementations
  when other restrictions described below are present.
- Support for filenames which exceed 100 bytes in length, or paths which
  exceed 255 bytes (see USTAR format specification for more details on
  this restriction).
- Support for filenames of arbitrary length
- Support for unicode metadata (the previous behaviour of erl_tar was
  actually violating the spec, by writing unicode-encoded data to fields
  which are defined to be 7-bit ASCII, even though this technically
  worked when using erl_tar at source and destination, it may not have
  worked with other tar utilities, and this implementation now conforms
  to the spec).
- Support for uid/gid values which cannot be converted to octal
  integers.

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/sasl/src/systools_make.erl b/lib/sasl/src/systools_make.erl
index 6a16c8689e..e7609f616c 100644
--- a/lib/sasl/src/systools_make.erl
+++ b/lib/sasl/src/systools_make.erl
@@ -1904,8 +1904,10 @@ del_tar(Tar, TarName) ->
     file:delete(TarName).
 
 add_to_tar(Tar, FromFile, ToFile) ->
-    case erl_tar:add(Tar, FromFile, ToFile, [compressed, dereference]) of
+    case catch erl_tar:add(Tar, FromFile, ToFile, [compressed, dereference]) of
 	ok -> ok;
+        {'EXIT', Reason} ->
+            throw({error, {tar_error, {add, FromFile, Reason}}});
 	{error, Error} ->
 	    throw({error, {tar_error, {add, FromFile, Error}}})
     end.