#define CAN_CHMOD_SYMLINK 1
#endif
+#ifdef HAVE_UTIMENSAT
+#ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
+#define ST_MTIME_NSEC st_mtim.tv_nsec
+#elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
+#define ST_MTIME_NSEC st_mtimensec
+#endif
+#endif
+
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#define ACLS_NEED_MASK 1
#endif
+#if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
+#ifdef HAVE_LINUX_FALLOC_H
+#include <linux/falloc.h>
+#endif
+#ifdef FALLOC_FL_KEEP_SIZE
+#define SUPPORT_PREALLOCATION 1
+#elif defined HAVE_FTRUNCATE
+#define SUPPORT_PREALLOCATION 1
+#define PREALLOCATE_NEEDS_TRUNCATE 1
+#endif
+#else /* !fallocate */
+#if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
+#define SUPPORT_PREALLOCATION 1
+#define PREALLOCATE_NEEDS_TRUNCATE 1
+#endif
+#endif
+
union file_extras {
int32 num;
uint32 unum;