devfs initial implementation

src/include/errno.h

@@ -7,5 +7,7 @@
 #define EINVAL  4
 #define ENOSYS  5
 #define EEXIST  6
+#define ENOENT  7
+
 
 #endif

src/include/kernel/devfs.h

@@ -0,0 +1,10 @@
+#ifndef _DEVFS_H_INCLUDE
+#define _DEVFS_H_INCLUDE
+
+#include <kernel/vfs.h>
+
+void devfs_init();
+int devfs_newdevice(char* name, int type, dev_t dev, mode_t mode);
+fscalls_t* devfs_getfuncs();
+
+#endif

src/include/sys/sysmacros.h

@@ -0,0 +1,8 @@
+#ifndef _SYSMACROS_H_INCLUDE
+#define _SYSMACROS_H_INCLUDE
+
+#define makedev(major,minor) (((major & 0xFFF) << 8) + (minor & 0xFF))
+#define major(dev) ((dev >> 8) & 0xFFF)
+#define minor(dev) (dev & 0xFF)
+
+#endif