> I'm attaching one possible solution, could you look at it?
Sorry for the typo, re-attaching because of this:
| diff --git a/src/system.c b/src/system.c
| index ca0ad05..d722352 100644
| --- a/src/system.c
| +++ b/src/system.c
| @@ -192,7 +192,7 @@ sys_wait_for_child (pid_t child_pid, bool eof)
| #ifdef HAVE_COMPRESS_EXIT_HACK
| else if (!strcmp (use_compress_program_option, HAVE_COMPRESS_EXIT_HACK)
| && WEXITSTATUS (wait_status) == 2)
| - WARN ((0, 0, _("%lu: Child says that compressed output is larger"
| + WARN ((0, 0, _("%lu: Child says that compressed output is larger "
| "then original data."),
| (unsigned long) child_pid));
| #endif
>From 3281269662a7d361ef8a360600352e93cc2ebdcf Mon Sep 17 00:00:00 2001
From: Pavel Raiskup <prais...@redhat.com>
Date: Mon, 25 Feb 2013 10:18:15 +0100
Subject: [PATCH] tar: The Lempel-Ziv coding bugfix
Do not exit with fatal error 2 after compressing tarball by the
'compress' utility (-Z option) when the child process running the
compressor exited with "just-a-warning" exit value 2. There is still
possible to restore the old tar behavior by running
'./configure --without-compress-exit-hack' (e.g. in situations when
there resides different compress implementation on the target system).
* acinclude.m4 (TAR_COMPRESS_EXIT_HACK): New function.
* configure.ac: Use TAR_COMPRESS_EXIT_HACK.
* src/system.c (sys_wait_for_child) [#ifdef HAVE_COMPRESS_EXIT_HACK]:
Warn when the compressed data are larger then the original data if
the child process command exited with 2 while the compressing
command was called 'compress'.
* NEWS: Document.
---
NEWS | 7 +++++++
acinclude.m4 | 19 +++++++++++++++++++
configure.ac | 3 +++
src/system.c | 7 +++++++
4 files changed, 36 insertions(+)
diff --git a/NEWS b/NEWS
index 3108798..863cf52 100644
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,13 @@ version 1.26.90 (Git)
* Bug fixes
+** The Lempel-Ziv coding compression bugfix (compress)
+
+Do not exit with fatal error during compressing by the 'compress'
+utility (-Z option) when the child process running the compressor exits
+with "warning" exit value 2. It just means that the compressed output is
+bigger then original data. Just warn the user now instead of hard fail.
+
** Sparse files with large data
When creating a PAX-format archive, tar no longer arbitrarily restricts
diff --git a/acinclude.m4 b/acinclude.m4
index d48c881..1367eed 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -52,3 +52,22 @@ AC_DEFUN([TAR_HEADERS_ATTR_XATTR_H],
)
fi
])
+
+# Allow maintainer to disable compress's exit-2-value hack
+AC_DEFUN([TAR_COMPRESS_EXIT_HACK],[
+ AC_ARG_WITH(
+ [compress-exit-hack],
+ AS_HELP_STRING(
+ [--without-compress-exit-hack],
+ [fail when -Z (compress) compressor exists with non-error value 2]),
+ [with_compress_exit_hack=no]
+ )
+ if test "x$with_compress_exit_hack" != xno; then
+ AC_DEFINE_UNQUOTED(
+ HAVE_COMPRESS_EXIT_HACK,
+ "$tar_cv_compressor_compress",
+ Define to name of compress utility when we don't want to fail hardly
+ if this utility exits with exit code 2. It should just mean that the
+ compressed file is bigger than original file.)
+ fi
+])
diff --git a/configure.ac b/configure.ac
index 3303c53..b0a4f14 100644
--- a/configure.ac
+++ b/configure.ac
@@ -253,6 +253,9 @@ TAR_COMPR_PROGRAM(lzma)
TAR_COMPR_PROGRAM(lzop)
TAR_COMPR_PROGRAM(xz)
+# must be called after TAR_COMPR_PROGRAM(compress) call
+TAR_COMPRESS_EXIT_HACK
+
AC_MSG_CHECKING(for default archive format)
AC_ARG_VAR([DEFAULT_ARCHIVE_FORMAT],
diff --git a/src/system.c b/src/system.c
index e1fd263..d722352 100644
--- a/src/system.c
+++ b/src/system.c
@@ -189,6 +189,13 @@ sys_wait_for_child (pid_t child_pid, bool eof)
if (!(!eof && sig == SIGPIPE))
FATAL_ERROR ((0, 0, _("Child died with signal %d"), sig));
}
+#ifdef HAVE_COMPRESS_EXIT_HACK
+ else if (!strcmp (use_compress_program_option, HAVE_COMPRESS_EXIT_HACK)
+ && WEXITSTATUS (wait_status) == 2)
+ WARN ((0, 0, _("%lu: Child says that compressed output is larger "
+ "then original data."),
+ (unsigned long) child_pid));
+#endif
else if (WEXITSTATUS (wait_status) != 0)
FATAL_ERROR ((0, 0, _("Child returned status %d"),
WEXITSTATUS (wait_status)));
--
1.8.1.2
