2 files changed, 33 insertions, 0 deletions
diff --git a/src/sys/include/os/filedesc.h b/src/sys/include/os/filedesc.h
index a6a2ac5..b773de9 100644
--- a/src/sys/include/os/filedesc.h
+++ b/src/sys/include/os/filedesc.h
@@ -30,6 +30,7 @@
 #ifndef _OS_FILEDESC_H_
 #define _OS_FILEDESC_H_ 1
 
+#include <sys/seek.h>
 #include <sys/types.h>
 #include <os/vnode.h>
 
@@ -117,4 +118,13 @@ ssize_t write(int fd, const void *buf, size_t count);
  */
 ssize_t read(int fd, void *buf, size_t count);
 
+/*
+ * Reposition the file offset of a file
+ *
+ * @fd: File descriptor to reposition
+ * @offset: Offset to move `fd' to
+ * @whence: How it should be repositioned
+ */
+off_t lseek(int fd, off_t offset, int whence);
+
 #endif  /* !_OS_FILEDESC_H_ */
diff --git a/src/sys/include/os/vnode.h b/src/sys/include/os/vnode.h
index 628ba68..1fd164d 100644
--- a/src/sys/include/os/vnode.h
+++ b/src/sys/include/os/vnode.h
@@ -88,9 +88,20 @@ struct vop_rw_data {
  * filesystem
  *
  * @ndp: Path component to create
+ * @vtype: Vnode type
  */
 struct vop_create_args {
     struct nameidata *ndp;
+    vtype_t vtype;
+};
+
+/*
+ * Represents attributes of a vnode
+ *
+ * @size: File size in bytes
+ */
+struct vattr {
+    size_t size;
 };
 
 /*
@@ -98,6 +109,7 @@ struct vop_create_args {
  * a specific vnode. These are implemented as callbacks
  */
 struct vop {
+    int(*getattr)(struct vnode *vp, struct vattr *res);
     int(*lookup)(struct vop_lookup_args *args);
     int(*reclaim)(struct vnode *vp, int flags);
     int(*create)(struct vop_create_args *args);
@@ -200,4 +212,15 @@ int vop_reclaim(struct vnode *vp, int flags);
  */
 int vop_create(struct vnode *vp, struct nameidata *ndp);
 
+/*
+ * Get the attributes of a file
+ *
+ * @vp: Vnode of file to get attributes of
+ * @res: Result of file to get attr of
+ *
+ * Returns zero on success, otherwise a less than
+ * zero value on failure
+ */
+int vop_getattr(struct vnode *vp, struct vattr *res);
+
 #endif  /* !_OS_VNODE_H_ */