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Diffstat (limited to 'libaio-0.3.109/man/io_prep_fsync.3')
| -rw-r--r-- | libaio-0.3.109/man/io_prep_fsync.3 | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/libaio-0.3.109/man/io_prep_fsync.3 b/libaio-0.3.109/man/io_prep_fsync.3 new file mode 100644 index 0000000..4cf935a --- /dev/null +++ b/libaio-0.3.109/man/io_prep_fsync.3 @@ -0,0 +1,89 @@ +./" static inline void io_prep_fsync(struct iocb *iocb, int fd) +./" { +./" memset(iocb, 0, sizeof(*iocb)); +./" iocb->aio_fildes = fd; +./" iocb->aio_lio_opcode = IO_CMD_FSYNC; +./" iocb->aio_reqprio = 0; +./" } +.TH io_prep_fsync 3 2002-09-12 "Linux 2.4" Linux AIO" +.SH NAME +io_prep_fsync \- Synchronize a file's complete in-core state with that on disk +.SH SYNOPSYS +.nf +.B #include <errno.h> +.br +.sp +.B #include <libaio.h> +.br +.sp +.BI "static inline void io_prep_fsync(struct iocb *iocb, int fd)" +.sp +struct iocb { + void *data; + unsigned key; + short aio_lio_opcode; + short aio_reqprio; + int aio_fildes; +}; +.sp +.fi +.SH DESCRIPTION +This is an inline convenience function for setting up an iocbv for a FSYNC request. +.br +The file for which +.TP +.IR "iocb->aio_fildes = fd" +is a descriptor is set up with +the command +.TP +.IR "iocb->aio_lio_opcode = IO_CMD_FSYNC: +. +.PP +The io_prep_fsync() function shall set up an IO_CMD_FSYNC operation +to asynchronously force all I/O +operations associated with the file indicated by the file +descriptor aio_fildes member of the iocb structure referenced by +the iocb argument and queued at the time of the call to +io_submit() to the synchronized I/O completion state. The function +call shall return when the synchronization request has been +initiated or queued to the file or device (even when the data +cannot be synchronized immediately). + +All currently queued I/O operations shall be completed as if by a call +to fsync(); that is, as defined for synchronized I/O file +integrity completion. If the +operation queued by io_prep_fsync() fails, then, as for fsync(), +outstanding I/O operations are not guaranteed to have +been completed. + +If io_prep_fsync() succeeds, then it is only the I/O that was queued +at the time of the call to io_submit() that is guaranteed to be +forced to the relevant completion state. The completion of +subsequent I/O on the file descriptor is not guaranteed to be +completed in a synchronized fashion. +.PP +This function returns immediately . To schedule the operation, the +function +.IR io_submit +must be called. +.PP +Simultaneous asynchronous operations using the same iocb produce +undefined results. +.SH "RETURN VALUES" +None +.SH ERRORS +None +.SH "SEE ALSO" +.BR io(3), +.BR io_cancel(3), +.BR io_fsync(3), +.BR io_getevents(3), +.BR io_prep_pread(3), +.BR io_prep_pwrite(3), +.BR io_queue_init(3), +.BR io_queue_release(3), +.BR io_queue_run(3), +.BR io_queue_wait(3), +.BR io_set_callback(3), +.BR io_submit(3), +.BR errno(3) |