Provided by:
libaio-dev_0.3.106-5ubuntu2_i386 
NAME
io_prep_pread - Set up asynchronous read
SYNOPSYS
#include <errno.h>
#include <libaio.h>
inline void io_prep_pread(struct iocb *iocb, int fd, void *buf, size_t count, long long offset)
"
struct iocb {
void *data;
unsigned key;
short aio_lio_opcode;
short aio_reqprio;
int aio_fildes;
};
DESCRIPTION
io_prep_pread is an inline convenience function designed to facilitate
the initialization of the iocb for an asynchronous read operation.
The first
iocb->u.c.nbytes = count
bytes of the file for which
iocb->aio_fildes = fd
is a descriptor are written to the buffer starting at
iocb->u.c.buf = buf
Reading starts at the absolute position
ioc->u.c.offset = offset
in the file.
This function returns immediately . To schedule the operation, the
function io_submit must be called.
Simultaneous asynchronous operations using the same iocb produce unde‐
fined results.
None
ERRORS
None
io(3), io_cancel(3), io_fsync(3), io_getevents(3), io_prep_fsync(3),
io_prep_pwrite(3), io_queue_init(3), io_queue_release(3),
io_queue_run(3), io_queue_wait(3), io_set_callback(3), io_submit(3),
errno(3)