1 files changed, 6 insertions, 1 deletions
diff --git a/src/user/knob/file.c b/src/user/knob/file.c
index db38e52..999778e 100644
--- a/src/user/knob/file.c
+++ b/src/user/knob/file.c
@@ -73,7 +73,7 @@ uint32_t read_from_file(struct file *f, uint32_t max, void *buf) {
   return read;
 }
 
-uint32_t write_to_file(struct file *f, uint32_t max, void *buf) {
+uint32_t write_to_file(struct file *f, uint32_t max, const void *buf) {
   if (f->position + max > f->length)
     _set_file_size(f->handle, f->length = f->position + max);
 
@@ -110,6 +110,11 @@ int32_t seek_file_by(struct file *f, int32_t by) {
 }
 
 __attribute__ ((pure))
+uint32_t get_file_pos(struct file *f) {
+  return f->position;
+}
+
+__attribute__ ((pure))
 uint32_t file_size(struct file *f) {
   return f->length;
 }