Variable DIRENT_SIZEConst

dirent — directory entry header preceding each name in fd_readdir.

Record layout (size 24, alignment 8):

• d_next offset 0, size 8 (dircookie for resuming the read)
• d_ino offset 8, size 8
• d_namlen offset 16, size 4
• d_type offset 20, size 1

The entry's UTF-8 name immediately follows these 24 bytes.