FILE_INFO
if (curr_ext < FILE_INFO->extents)
filemax = FILE_INFO->len;
size = FILE_INFO->len-VSTAFS_START_DATA;
a = FILE_INFO->blocks;
while (extent < FILE_INFO->extents && offset>ext_size);
curr_ext < FILE_INFO->extents;
#define DIRECTORY_BUF ((struct dir_entry *) (int) FILE_INFO + 512)
devread (sector, 0, BLOCK_SIZE, (char *) FILE_INFO);
if (FILE_INFO->type != 2)
a = FILE_INFO->blocks;