1 files changed, 45 insertions, 0 deletions
diff --git a/core/dir.c b/core/dir.c
new file mode 100644
index 00000000..4013280a
--- /dev/null
+++ b/core/dir.c
@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <string.h>
+#include <sys/dirent.h>
+#include "fs.h"
+#include "core.h"
+
+/* 
+ * open dir, return the file structure pointer in _eax_, or NULL if failed 
+ */
+void opendir(com32sys_t *regs)
+{
+    char *src = MK_PTR(regs->es, regs->esi.w[0]);
+    char *dst = MK_PTR(regs->ds, regs->edi.w[0]);
+    strcpy(dst, src);
+    searchdir(regs);
+    regs->eax.l = (uint32_t)handle_to_file(regs->esi.w[0]);	
+}
+
+/*
+ * Read one dirent at one time. 
+ *
+ * @input: _esi_ register stores the address of DIR structure
+ * @output: _eax_ register stores the address of newly read dirent structure
+ */
+void readdir(com32sys_t *regs)
+{
+    DIR *dir = (DIR *)regs->esi.l;	
+    struct dirent *de = NULL;
+    
+    if (dir->dd_dir)
+	de = this_fs->fs_ops->readdir(dir->dd_dir);
+    else
+	de = NULL;
+    
+    /* Return the newly read de in _eax_ register */
+    regs->eax.l = (uint32_t)de;
+}
+
+void closedir(com32sys_t *regs)
+{
+    DIR *dir = (DIR *)regs->esi.l;
+    _close_file(dir->dd_dir);
+}
+
+