mirror of
https://github.com/GnoConsortium/gno.git
synced 2024-12-21 07:30:05 +00:00
87 lines
3.1 KiB
Groff
87 lines
3.1 KiB
Groff
.\" Copyright (c) 1983, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)fsync.2 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.TH FSYNC 2 "22 January 1997" GNO "System Calls"
|
|
.SH NAME
|
|
.BR fsync
|
|
\- synchronize a file
|
|
.SH SYNOPSIS
|
|
#include <unistd.h>
|
|
.sp 1
|
|
int
|
|
\fBfsync\fR (int \fIfd\fR);
|
|
.SH DESCRIPTION
|
|
.BR fsync
|
|
causes all modified data and attributes of
|
|
.I fd
|
|
to be moved to a permanent storage device.
|
|
This normally results in all in-core modified copies
|
|
of buffers for the associated file to be written to a disk.
|
|
.LP
|
|
.BR fsync
|
|
should be used by programs that require a file to be
|
|
in a known state, for example, in building a simple transaction
|
|
facility.
|
|
.LP
|
|
This call is only needed in special circumstances, as when several
|
|
daemons are all modifying the same file simultaneously (currently
|
|
impossible with existing IIgs filesystems). This call is basically a
|
|
.BR FlushGS .
|
|
.SH RETURN VALUES
|
|
A 0 value is returned on success. A -1 value indicates
|
|
an error.
|
|
.SH ERRORS
|
|
The
|
|
.BR fsync
|
|
fails if:
|
|
.RS
|
|
.IP \fBEBADF\fR
|
|
.I Fd
|
|
is not a valid descriptor.
|
|
.IP \fBEINVAL\fR
|
|
.I Fd
|
|
refers to a socket, not to a file.
|
|
.IP \fBEIO\fR
|
|
An I/O error occurred while reading from or writing to the file system.
|
|
.RE
|
|
.SH SEE ALSO
|
|
.BR sync (2),
|
|
.BR sync (8),
|
|
.BR update (8),
|
|
the
|
|
.IR "GS/OS Reference Manual" .
|
|
.SH HISTORY
|
|
The
|
|
.BR fsync
|
|
function call appeared in 4.2BSD.
|