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.
keszybz · May 19, 2017 · 72391e7 · 72391e7
1 parent 02d6072
commit 72391e7
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diff --git 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
@@ -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)))