From 02d6072dfb775f84e58aca210e59bba654932e14 Mon Sep 17 00:00:00 2001
From: Daniel Mack <daniel@zonque.org>
Date: Wed, 5 Apr 2017 22:26:06 +0200
Subject: [PATCH 1/2] configure: relax the liblzma check a bit

Ubuntu 16.04 LTS ships 5.1.0a which works fine, so let's downgrade the
minimal version.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 7311c120741fd..d26d9322f49f3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -42,7 +42,7 @@ AM_PATH_LIBGCRYPT([1.4.5],, AC_MSG_ERROR([*** libgcrypt was not found.]))
 AC_SUBST([LIBGCRYPT_CFLAGS])
 AC_SUBST([LIBGCRYPT_LIBS])
 
-PKG_CHECK_MODULES(LIBLZMA, [liblzma >= 5.2.2],
+PKG_CHECK_MODULES(LIBLZMA, [liblzma >= 5.1.0],
                   [], [AC_MSG_ERROR([*** lzma library not found])])
 
 PKG_CHECK_MODULES(LIBCURL, [libcurl >= 7.32.0],

From 72391e782a3aeb2726d3c5bbbfc61adf949baed4 Mon Sep 17 00:00:00 2001
From: Daniel Mack <daniel@zonque.org>
Date: Fri, 19 May 2017 23:55:36 +0200
Subject: [PATCH 2/2] Provide definitions for struct file_clone_range and
 FICLONERANGE

These are not available in the header files shipped with Ubuntu 16.04, so
let's do the missing.h dance.
---
 configure.ac |  5 +++++
 src/util.h   | 14 ++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/configure.ac b/configure.ac
index d26d9322f49f3..d407ad870ff72 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,6 +34,11 @@ AC_CHECK_DECLS([
 #include <linux/random.h>
 ]])
 
+AC_CHECK_TYPES([struct file_clone_range],
+               [], [], [[
+#include <linux/fs.h>
+]])
+
 AC_CHECK_SIZEOF(uid_t)
 AC_CHECK_SIZEOF(gid_t)
 AC_CHECK_SIZEOF(pid_t)
diff --git a/src/util.h b/src/util.h
index 988cb4f546ead..a95db43791b8e 100644
--- a/src/util.h
+++ b/src/util.h
@@ -14,6 +14,7 @@
 #include <unistd.h>
 
 #include <linux/magic.h>
+#include <linux/types.h>
 
 #define new(t, n) ((t*) malloc((n) * sizeof(t)))
 #define new0(t, n) ((t*) calloc((n), sizeof(t)))
@@ -550,6 +551,19 @@ static inline const char *yes_no(bool b) {
 #define CGROUP2_SUPER_MAGIC 0x63677270
 #endif
 
+#ifndef FICLONERANGE
+#define FICLONERANGE	_IOW(0x94, 13, struct file_clone_range)
+#endif
+
+#ifndef HAVE_STRUCT_FILE_CLONE_RANGE
+struct file_clone_range {
+        __s64 src_fd;
+        __u64 src_offset;
+        __u64 src_length;
+        __u64 dest_offset;
+};
+#endif
+
 #define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
 #define INT_TO_PTR(u) ((void *) ((intptr_t) (u)))
 #define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))