+#define F_FREESP O_TRUNC
+typedef struct flock flock_t;
+
+#define os_strsignal strsignal
+#define OS_STRSIGNAL
+
+#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD_kernel__)
+#define SIOCGIFCONF_GIVES_ADDR
+#define HAVE_SYS_MOUNT_H
+#endif
+
+#if defined(__linux__)
+