kernel: tmpfs: Store the *real* size in a node

The 'len' field within the tmpfs node stores the buffer length which is
relative to the tmpfs block size. Introduce a real size which returns
the amount of data actually present within those buffers.

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/include/fs/tmpfs.h b/sys/include/fs/tmpfs.h
index b2a5bbe..ca24060 100644
--- a/sys/include/fs/tmpfs.h
+++ b/sys/include/fs/tmpfs.h
@@ -53,6 +53,7 @@ struct tmpfs_node;
  * @rpath: /tmp/ relative path (for lookups)
  * @type: The tmpfs node type [one-to-one to vtype]
  * @len: Length of buffer
+ * @real_size: Actual size of file
  * @data: The backing file data
  * @dirvp: Vnode of the parent node
  * @vp: Vnode of the current node
@@ -62,6 +63,7 @@ struct tmpfs_node {
     char rpath[PATH_MAX];
     uint8_t type;
     size_t len;
+    size_t real_size;
     void *data;
     struct vnode *dirvp;
     struct vnode *vp;