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NAME
       io_submit - submit asynchronous I/O blocks for processing


SYNOPSIS
       #include <libaio.h>

       int io_submit(aio_context_t ctx_id, long nr, struct iocb **iocbpp);

       Link with -laio.


DESCRIPTION
       io_submit()  queues  nr  I/O  request  blocks for processing in the AIO
       context ctx_id.  iocbpp should be an array of nr  AIO  request  blocks,
       which will be submitted to context ctx_id.


RETURN VALUE
       On  success,  io_submit()  returns the number of iocbs submitted (which
       may be 0 if nr is zero); on failure,  it  returns  one  of  the  errors
       listed under ERRORS.


ERRORS
       EINVAL The aio_context specified by ctx_id is invalid.  nr is less than
              0.  The iocb at *iocbpp[0] is not properly initialized,  or  the
              operation  specified  is  invalid for the file descriptor in the
              iocb.

       EFAULT One of the data structures points to invalid data.

       EBADF  The file descriptor specified in the first iocb is invalid.

       EAGAIN Insufficient resources are available to queue any iocbs.

       ENOSYS io_submit() is not implemented on this architecture.


VERSIONS
       The asynchronous I/O system calls first appeared in Linux  2.5,  August
       2002.


CONFORMING TO
       io_submit()  is  Linux-specific and should not be used in programs that
       are intended to be portable.


SEE ALSO
       io_setup(2), io_destroy(2), io_getevents(2), io_cancel(2)


COLOPHON
       This page is part of release 2.77 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.