3 files changed, 4 insertions, 0 deletions
diff --git a/sys/include/sys/device.h b/sys/include/sys/device.h
index 9851ee2..69e367f 100644
--- a/sys/include/sys/device.h
+++ b/sys/include/sys/device.h
@@ -42,6 +42,7 @@ struct device {
     int(*write)(struct device *dev, struct sio_txn *sio);
     int(*read)(struct device *dev, struct sio_txn *sio);
     int(*ioctl)(struct device *dev, uint32_t cmd, uintptr_t arg);
+    int(*open)(struct device *dev);
     paddr_t(*mmap)(struct device *dev, off_t off, vm_prot_t prot);
     TAILQ_ENTRY(device) link;
 };
diff --git a/sys/include/sys/vfs.h b/sys/include/sys/vfs.h
index f5fede8..98aef3f 100644
--- a/sys/include/sys/vfs.h
+++ b/sys/include/sys/vfs.h
@@ -56,7 +56,9 @@ ssize_t vfs_hash_path(const char *path);
 
 ssize_t vfs_read(struct vnode *vp, struct sio_txn *sio);
 ssize_t vfs_write(struct vnode *vp, struct sio_txn *sio);
+
 int vfs_getattr(struct vnode *vp, struct vattr *vattr);
+int vfs_open(struct vnode *vp);
 
 uint64_t sys_mount(struct syscall_args *args);
 
diff --git a/sys/include/sys/vnode.h b/sys/include/sys/vnode.h
index 6dc2cbc..71fc5c2 100644
--- a/sys/include/sys/vnode.h
+++ b/sys/include/sys/vnode.h
@@ -44,6 +44,7 @@ struct vops {
     int(*read)(struct vnode *vp, struct sio_txn *sio);
     int(*write)(struct vnode *vp, struct sio_txn *sio);
     int(*getattr)(struct vnode *vp, struct vattr *vattr);
+    int(*open)(struct vnode *vp);
 };
 
 struct vattr {