file manager

1 files changed, 20 insertions, 1 deletions

diff --git a/src/user/knob/file.c b/src/user/knob/file.c
index 23b7564..f1a039d 100644
--- a/src/user/knob/file.c
+++ b/src/user/knob/file.c
@@ -1,4 +1,5 @@
 #include <pland/syscall.h>
+#include <pland/pcrt.h>
 #include <knob/format.h>
 #include <knob/heap.h>
 #include <knob/env.h>
@@ -11,11 +12,13 @@ struct ofl_node {
 
 static struct ofl_node *head_ofl_node = 0;
 
-void _close_all_files() {
+static void _close_all_files() {
   for (struct ofl_node *i = head_ofl_node; i; i = i->next)
     _close_file(i->handle);
 }
 
+BEFORE_QUIT(_close_all_files)
+
 struct file {
   struct ofl_node *node;
   _file_handle_t handle;
@@ -121,4 +124,20 @@ int32_t seek_file_by(struct file *f, int32_t by) {
 __attribute__ ((pure))
 uint32_t file_size(struct file *f) {
   return f->length;
+}
+
+//return value must be manually freed, unless it is a null pointer
+_dir_info_entry_t *get_directory_info(const char *path, uint32_t *count_out) {
+  uint8_t dn;
+  path = remove_prefix(path, &dn);
+
+  uint32_t count = _count_of_dir(dn, path);
+  if (!count) {
+    *count_out = 0;
+    return 0;
+  }
+
+  _dir_info_entry_t *buffer = get_block(count * sizeof(_dir_info_entry_t));
+  *count_out = _enumerate_dir(dn, path, buffer, count);
+  return buffer;
 }
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