vfs: introduce vfs_format_by_path()

sys/include/vfs.h

@@ -898,6 +898,21 @@ int vfs_closedir(vfs_DIR *dirp);
  */
 int vfs_format(vfs_mount_t *mountp);
 
+/**
+ * @brief Format a file system
+ *
+ * The file system must not be mounted in order to be formatted.
+ * Call @ref vfs_unmount_by_path first if necessary.
+ *
+ * @note This assumes mount points have been configured with @ref VFS_AUTO_MOUNT.
+ *
+ * @param[in]  path     Path of the pre-configured mount point
+ *
+ * @return 0 on success
+ * @return <0 on error
+ */
+int vfs_format_by_path(const char *path);
+
 /**
  * @brief Mount a file system
  *

sys/vfs/vfs.c

@@ -1208,4 +1208,15 @@ int vfs_unmount_by_path(const char *path)
     return -ENOENT;
 }
 
+int vfs_format_by_path(const char *path)
+{
+    for (unsigned i = 0; i < MOUNTPOINTS_NUMOF; ++i) {
+        if (strcmp(path, vfs_mountpoints_xfa[i].mount_point) == 0) {
+            return vfs_format(&vfs_mountpoints_xfa[i]);
+        }
+    }
+
+    return -ENOENT;
+}
+
 /** @} */