Espresso 0.0.2c

drivers/fs/ekfs.c

@@ -0,0 +1,49 @@
+#include <types.h>
+#include <string.h>
+#include <drivers/ide.h>
+
+#include <fs/ekfs.h>
+
+/* work on this later */
+#if 0
+
+/* note: __l being 0 is allowed, because that way read() can be used to tell if a file exists (with return value 0) */
+int ekfs_read(struct ekfs_file* __f, void* __b, size_t __l)
+{
+  int rv = 0;
+  
+  if (!__f || !__b || (!__f->f_inode))
+  {
+    return -1;
+  }
+  
+  /* we assume drive 0 is already mounted */
+
+  char buffer[512];
+  memset(buffer, 0, 512);
+
+  int num_sectors = __f->f_inode->i_len / 512;
+
+  if ((__l / 512) > num_sectors)
+  {
+    return EKFS_E_FILETOOSMALL;
+  }
+  
+  int read_sectors = num_sectors;
+
+  for (int i = 0; i < read_sectors; i++);
+  {
+    rv = read_sector(__f->f_inode->i_start, buffer);
+
+    if (rv != 0)
+    {
+      break;
+    }
+
+    
+  }
+  
+  return rv;
+}
+
+#endif