NAME

       io_destroy - destroy an asynchronous I/O context

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <linux/aio_abi.h>    /* Definition of aio_context_t */
       #include <sys/syscall.h>      /* Definition of SYS_* constants */
       #include <unistd.h>

       int syscall(SYS_io_destroy, aio_context_t ctx_id);

       Note: glibc provides no wrapper for io_destroy(), necessitating the use of syscall(2).

DESCRIPTION

       Note:  this  page  describes  the  raw  Linux system call interface.  The wrapper function
       provided by libaio uses a different type for the ctx_id argument.  See NOTES.

       The io_destroy() system call will attempt  to  cancel  all  outstanding  asynchronous  I/O
       operations  against  ctx_id, will block on the completion of all operations that could not
       be canceled, and will destroy the ctx_id.

RETURN VALUE

       On success, io_destroy() returns 0.  For the failure return, see NOTES.

ERRORS

       EFAULT The context pointed to is invalid.

       EINVAL The AIO context specified by ctx_id is invalid.

       ENOSYS io_destroy() is not implemented on this architecture.

VERSIONS

       The asynchronous I/O system calls first appeared in Linux 2.5.

STANDARDS

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

NOTES

       You probably want to use the io_destroy() wrapper function provided by libaio.

       Note  that the libaio wrapper function uses a different type (io_context_t) for the ctx_id
       argument.  Note also that  the  libaio  wrapper  does  not  follow  the  usual  C  library
       conventions  for  indicating  errors:  on  error  it  returns  a negated error number (the
       negative of one of the values listed in ERRORS).   If  the  system  call  is  invoked  via
       syscall(2),  then  the return value follows the usual conventions for indicating an error:
       -1, with errno set to a (positive) value that indicates the error.

SEE ALSO

       io_cancel(2), io_getevents(2), io_setup(2), io_submit(2), aio(7)