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Annotation of 43BSDReno/lib/libc/sys/fsync.2, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted provided
        !             5: .\" that: (1) source distributions retain this entire copyright notice and
        !             6: .\" comment, and (2) distributions including binaries display the following
        !             7: .\" acknowledgement:  ``This product includes software developed by the
        !             8: .\" University of California, Berkeley and its contributors'' in the
        !             9: .\" documentation or other materials provided with the distribution and in
        !            10: .\" all advertising materials mentioning features or use of this software.
        !            11: .\" Neither the name of the University nor the names of its contributors may
        !            12: .\" be used to endorse or promote products derived from this software without
        !            13: .\" specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"    @(#)fsync.2     6.6 (Berkeley) 6/23/90
        !            19: .\"
        !            20: .TH FSYNC 2 "June 23, 1990"
        !            21: .UC 5
        !            22: .SH NAME
        !            23: fsync \- synchronize a file's in-core state with that on disk
        !            24: .SH SYNOPSIS
        !            25: .ft B
        !            26: fsync(fd)
        !            27: .br
        !            28: int fd;
        !            29: .ft R
        !            30: .SH DESCRIPTION
        !            31: .I Fsync
        !            32: causes all modified data and attributes of \fIfd\fP
        !            33: to be moved to a permanent storage device.
        !            34: This normally results in all in-core modified copies
        !            35: of buffers for the associated file to be written to a disk.
        !            36: .PP
        !            37: .I Fsync
        !            38: should be used by programs that require a file to be
        !            39: in a known state, for example, in building a simple transaction
        !            40: facility.
        !            41: .SH "RETURN VALUE
        !            42: A 0 value is returned on success.  A \-1 value indicates
        !            43: an error.
        !            44: .SH "ERRORS
        !            45: The \fIfsync\fP fails if:
        !            46: .TP 15
        !            47: [EBADF]
        !            48: \fIFd\fP is not a valid descriptor.
        !            49: .TP 15
        !            50: [EINVAL]
        !            51: \fIFd\fP refers to a socket, not to a file.
        !            52: .TP 15
        !            53: [EIO]
        !            54: An I/O error occurred while reading from or writing to the file system.
        !            55: .SH "SEE ALSO"
        !            56: sync(2), sync(8), update(8)

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