From fd1d8ee21df8d11460baa858ae5c5d20e38fb70e Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Tue, 28 Nov 2017 02:55:48 +0300
Subject: Enable large-file support on systems that do not enable it by default

Invoke AC_SYS_LARGEFILE to enable large-file support.

This fix doesn't change the library as much as the tools because
the only affected function in libattr is attr_copy_action that calls
attr_parse_attr_conf that in turn calls fopen(ATTR_CONF, "r").

What is the most affected is getfattr, without the fix it just cannot
process large files, e.g.

$ truncate -s2G large-file && getfattr large-file
getfattr: large-file: Value too large for defined data type
---
 configure.ac   | 1 +
 test/attr.test | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/configure.ac b/configure.ac
index 7260ce3..b46afce 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,6 +30,7 @@ AC_C_CONST
 AC_TYPE_MODE_T
 AC_FUNC_ALLOCA
 AC_FUNC_GCC_VISIBILITY
+AC_SYS_LARGEFILE
 
 AM_PROG_AR
 LT_INIT
diff --git a/test/attr.test b/test/attr.test
index 9f750b0..6ce2f9b 100644
--- a/test/attr.test
+++ b/test/attr.test
@@ -391,3 +391,9 @@ Test for proper recursion of directory structures with -L -P -R
 	>
 
 	$ rm -R 1
+
+Test for large-file support
+
+	$ dd bs=65536 seek=32768 if=/dev/null of=large-file 2>/dev/null ||:
+	$ sh -c 'if test -f large-file; then getfattr large-file; fi'
+	$ rm large-file
-- 
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