diff --git a/libc/include/sys/param.h b/libc/include/sys/param.h
index e64d6ce..5d2248f 100644
--- a/libc/include/sys/param.h
+++ b/libc/include/sys/param.h
@@ -31,6 +31,8 @@
 #include <limits.h>
 #include <linux/param.h>
 
+#define DEV_BSIZE 512
+
 #define MAXPATHLEN  PATH_MAX
 #define MAXSYMLINKS 8
 
diff --git a/libc/include/sys/stat.h b/libc/include/sys/stat.h
index 257ded0..86668f6 100644
--- a/libc/include/sys/stat.h
+++ b/libc/include/sys/stat.h
@@ -135,6 +135,12 @@
 #define DEFFILEMODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH) /* 0666 */
 #endif
 
+#if defined(__USE_BSD) || defined(__USE_GNU)
+#define S_IREAD S_IRUSR
+#define S_IWRITE S_IWUSR
+#define S_IEXEC S_IXUSR
+#endif
+
 extern int chmod(const char*, mode_t);
 extern int fchmod(int, mode_t);
 extern int mkdir(const char*, mode_t);
diff --git a/libc/include/sys/types.h b/libc/include/sys/types.h
index 217fd60..a422261 100644
--- a/libc/include/sys/types.h
+++ b/libc/include/sys/types.h
@@ -66,6 +66,8 @@
 typedef __kernel_ino_t __ino_t;
 typedef __ino_t ino_t;
 
+typedef uint64_t ino64_t;
+
 typedef uint32_t __nlink_t;
 typedef __nlink_t nlink_t;