From 8d039f7bd84ce8cbbbe9ba5677f5a353d6224b66 Mon Sep 17 00:00:00 2001
From: Ethan Yonker <dees_troy@teamw.in>
Date: Fri, 3 Feb 2017 14:26:15 -0600
Subject: libtar: support backing up and restoring new Android user.* xattr

Support for backing up and restoring user.default, user.inode_cache, and
user.inode_code_cache xattrs introduced in Android 7.x

Change-Id: I6e0aa7fc9cd30ed004ef28ebb58d60a82e518123
---
 libtar/append.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'libtar/append.c')

diff --git a/libtar/append.c b/libtar/append.c
index d8ba3cad5..8896764f2 100644
--- a/libtar/append.c
+++ b/libtar/append.c
@@ -40,6 +40,7 @@
 #ifdef HAVE_EXT4_CRYPT
 # include "ext4crypt_tar.h"
 #endif
+#include "android_utils.h"
 
 struct tar_dev
 {
@@ -172,6 +173,32 @@ tar_append_file(TAR *t, const char *realname, const char *savename)
 		}
 	}
 
+	/* get android user.default xattr */
+	if (TH_ISDIR(t) && t->options & TAR_STORE_ANDROID_USER_XATTR)
+	{
+		if (getxattr(realname, "user.default", NULL, 0) >= 0)
+		{
+			t->th_buf.has_user_default = 1;
+#if 1 //def DEBUG
+			printf("storing xattr user.default\n");
+#endif
+		}
+		if (getxattr(realname, "user.inode_cache", NULL, 0) >= 0)
+		{
+			t->th_buf.has_user_cache = 1;
+#if 1 //def DEBUG
+			printf("storing xattr user.inode_cache\n");
+#endif
+		}
+		if (getxattr(realname, "user.inode_code_cache", NULL, 0) >= 0)
+		{
+			t->th_buf.has_user_code_cache = 1;
+#if 1 //def DEBUG
+			printf("storing xattr user.inode_code_cache\n");
+#endif
+		}
+	}
+
 	/* check if it's a hardlink */
 #ifdef DEBUG
 	puts("tar_append_file(): checking inode cache for hardlink...");
-- 
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