aio_fsync(3) Library Functions Manual aio_fsync(3) NAME aio_fsync - asynchronous file synchronization LIBRARY Real-time library (librt, -lrt) SYNOPSIS #include <aio.h> int aio_fsync(int op, struct aiocb *aiocbp); DESCRIPTION The aio_fsync() function does a sync on all outstanding asynchronous I/O operations associated with aiocbp->aio_fildes. (See aio(7) for a description of the aiocb structure.) More precisely, if op is O_SYNC, then all currently queued I/O opera- tions shall be completed as if by a call of fsync(2), and if op is O_DSYNC, this call is the asynchronous analog of fdatasync(2). Note that this is a request only; it does not wait for I/O completion. Apart from aio_fildes, the only field in the structure pointed to by aiocbp that is used by this call is the aio_sigevent field (a sigevent structure, described in sigevent(7)), which indicates the desired type of asynchronous notification at completion. All other fields are ig- nored. RETURN VALUE On success (the sync request was successfully queued) this function re- turns 0. On error, -1 is returned, and errno is set to indicate the error. ERRORS EAGAIN Out of resources. EBADF aio_fildes is not a valid file descriptor open for writing. EINVAL Synchronized I/O is not supported for this file, or op is not O_SYNC or O_DSYNC. ENOSYS aio_fsync() is not implemented. VERSIONS The aio_fsync() function is available since glibc 2.1. ATTRIBUTES For an explanation of the terms used in this section, see at- tributes(7). ┌────────────────────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├────────────────────────────────────────────┼───────────────┼─────────┤ │aio_fsync() │ Thread safety │ MT-Safe │ └────────────────────────────────────────────┴───────────────┴─────────┘ STANDARDS POSIX.1-2001, POSIX.1-2008. SEE ALSO aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_sus- pend(3), aio_write(3), lio_listio(3), aio(7), sigevent(7) Linux man-pages 6.03 2022-12-15 aio_fsync(3)
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