3 int aio_fildes; /* File descriptor. */
4 off_t aio_offset; /* File offset */
5 volatile void *aio_buf; /* Location of buffer. */
6 size_t aio_nbytes; /* Length of transfer. */
7 int aio_reqprio; /* Request priority offset. */
8 struct sigevent aio_sigevent; /* Signal number and value. */
9 int aio_lio_opcode; /* Operation to be performed. */