From b4059f6309c5129a619bd1a95d27919231e07860 Mon Sep 17 00:00:00 2001
From: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Date: Sun, 3 May 2015 18:40:12 +0200
Subject: [PATCH] libarchive: auto-detect .Z files as well

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 archival/libarchive/open_transformer.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/archival/libarchive/open_transformer.c b/archival/libarchive/open_transformer.c
index ab6aa3afc..be536a3d7 100644
--- a/archival/libarchive/open_transformer.c
+++ b/archival/libarchive/open_transformer.c
@@ -185,6 +185,13 @@ static transformer_state_t *setup_transformer_on_fd(int fd, int fail_if_not_comp
 		USE_FOR_NOMMU(xstate->xformer_prog = "gunzip";)
 		goto found_magic;
 	}
+	if (ENABLE_FEATURE_SEAMLESS_Z
+	 && magic.b16[0] == COMPRESS_MAGIC
+	) {
+		xstate->xformer = unpack_Z_stream;
+		USE_FOR_NOMMU(xstate->xformer_prog = "uncompress";)
+		goto found_magic;
+	}
 	if (ENABLE_FEATURE_SEAMLESS_BZ2
 	 && magic.b16[0] == BZIP2_MAGIC
 	) {