aio_error — get error status of asynchronous I/O operation
Synopsis
#include <aio.h>
int aio_error(const struct aiocb *aiocbp);
Link with -lrt.
Description
The aio_error() function returns the error status for the asynchronous I/O request with control block pointed to by aiocbp. (See aio(7) for a description of the aiocb structure.)
Return Value
This function returns one of the following:
- EINPROGRESS, if the request has not been completed yet.
- ECANCELED, if the request was canceled.
- 0, if the request completed successfully.
- A positive error number, if the asynchronous I/O operation failed. This is the same value that would have been stored in the errno variable in the case of a synchronous read(2), write(2), fsync(2), or fdatasync(2) call.
Errors
- EINVAL
aiocbp does not point at a control block for an asynchronous I/O request of which the return status (see aio_return(3)) has not been retrieved yet.
- ENOSYS
aio_error() is not implemented.
Versions
The aio_error() function is available since glibc 2.1.
Attributes
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
|---|---|---|
| aio_error() | Thread safety | MT-Safe |
Conforming to
POSIX.1-2001, POSIX.1-2008.
Example
See aio(7).
See Also
aio_cancel(3), aio_fsync(3), aio_read(3), aio_return(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7)
Colophon
This page is part of release 5.04 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Referenced By
aio(7), aio_cancel(3), aio_fsync(3), aio_read(3), aio_return(3), aio_suspend(3), aio_write(3), lio_listio(3), signal-safety(7).