From 213c2dfade1213a0eba4640ed6a2c1e82c09e63f Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sun, 21 Nov 2021 14:58:16 +0000
Subject: [PATCH] git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@15122
 27425a3e-05d8-49a3-a47f-9c15f0e5edd8

---
 os/vfs/include/vfs.h       |  2 ++
 os/vfs/include/vfssystem.h |  4 +++
 os/vfs/src/vfssystem.c     | 64 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+)

diff --git a/os/vfs/include/vfs.h b/os/vfs/include/vfs.h
index fe0471722..43e3255cc 100644
--- a/os/vfs/include/vfs.h
+++ b/os/vfs/include/vfs.h
@@ -64,6 +64,8 @@
 #define CH_VFS_PATCH            0
 /** @} */
 
+#include <stddef.h>
+
 /* Dependencies.*/
 #include "osal.h"
 #include "hal_objects.h"
diff --git a/os/vfs/include/vfssystem.h b/os/vfs/include/vfssystem.h
index 1eeed2faf..829d73db8 100644
--- a/os/vfs/include/vfssystem.h
+++ b/os/vfs/include/vfssystem.h
@@ -118,7 +118,11 @@ extern "C" {
   void vfsInit(void);
   vfserr_t vfsRegisterDriver(vfs_driver_t *vdp);
   vfserr_t vfsOpenDirectory(const char *name, vfs_directory_node_t **vdnpp);
+  void vfsCloseDirectory(vfs_directory_node_t *vdnp);
   vfserr_t vfsOpenFile(const char *name, vfs_file_node_t **vfnpp);
+  void vfsCloseFile(vfs_file_node_t *vfnp);
+  vfserr_t vfsReadFile(vfs_file_node_t *vfnp, char *buf, size_t n);
+  vfserr_t vfsWriteFile(vfs_file_node_t *vfnp, const char *buf, size_t n);
 #ifdef __cplusplus
 }
 #endif
diff --git a/os/vfs/src/vfssystem.c b/os/vfs/src/vfssystem.c
index 5c8faddff..f9710b9b9 100644
--- a/os/vfs/src/vfssystem.c
+++ b/os/vfs/src/vfssystem.c
@@ -196,6 +196,17 @@ vfserr_t vfsOpenDirectory(const char *path, vfs_directory_node_t **vdnpp) {
   return err;
 }
 
+/**
+ * @brief   Releases a @p vfs_directory_node_t object.
+ *
+ * @param[in] vdnp      the pointer to the @p vfs_directory_node_t object
+ *                      to be released
+ */
+void vfsCloseDirectory(vfs_directory_node_t *vdnp) {
+
+  vdnp->vmt->release((void *)vdnp);
+}
+
 /**
  * @brief   Opens a VFS file.
  *
@@ -219,4 +230,57 @@ vfserr_t vfsOpenFile(const char *path, vfs_file_node_t **vfnpp) {
   return err;
 }
 
+/**
+ * @brief   Releases a @p vfs_file_node_t object.
+ *
+ * @param[in] vfnp      the pointer to the @p vfs_file_node_t object
+ *                      to be released
+ */
+void vfsCloseFile(vfs_file_node_t *vfnp) {
+
+  vfnp->vmt->release((void *)vfnp);
+}
+
+/**
+ * @brief   File node read.
+ * @details The function reads data from a file node into a buffer.
+ *
+ * @param[in] vfnp      the pointer to the @p vfs_file_node_t object
+ * @param[out] buf      pointer to the data buffer
+ * @param[in] n         the maximum amount of data to be transferred
+ * @return              The transferred number of bytes or an error.
+ *
+ * @api
+ */
+vfserr_t vfsReadFile(vfs_file_node_t *vfnp, char *buf, size_t n) {
+  vfserr_t err = VFS_RET_SUCCESS;
+
+  (void)vfnp;
+  (void)buf;
+  (void)n;
+
+  return err;
+}
+
+/**
+ * @brief   File node write.
+ * @details The function writes data from a buffer to a file node.
+ *
+ * @param[in] vfnp      the pointer to the @p vfs_file_node_t object
+ * @param[out] buf      pointer to the data buffer
+ * @param[in] n         the maximum amount of data to be transferred
+ * @return              The transferred number of bytes or an error.
+ *
+ * @api
+ */
+vfserr_t vfsWriteFile(vfs_file_node_t *vfnp, const char *buf, size_t n) {
+  vfserr_t err = VFS_RET_SUCCESS;
+
+  (void)vfnp;
+  (void)buf;
+  (void)n;
+
+  return err;
+}
+
 /** @} */