io_destroy(2) System Calls Manual io_destroy(2)
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 comple-
tion 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_con-
text_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 in-
dicating an error: -1, with errno set to a (positive) value that indi-
cates the error.
SEE ALSO
io_cancel(2), io_getevents(2), io_setup(2), io_submit(2), aio(7)
Linux man-pages 6.03 2022-10-30 io_destroy(2)
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