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Annotation of cci/usr/src/man/man2/fsync.2, revision 1.1.1.1

1.1       root        1: .TH FSYNC 2 "12 February 1983"
                      2: .UC 4
                      3: .SH NAME
                      4: fsync \- synchronize a file's in-core state with that on disk
                      5: .SH SYNOPSIS
                      6: .ft B
                      7: fsync(fd)
                      8: .br
                      9: int fd;
                     10: .ft R
                     11: .SH DESCRIPTION
                     12: .I Fsync
                     13: causes all modified data and attributes of \fIfd\fP
                     14: to be moved to a permanent storage device.
                     15: This normally results in all in-core modified copies
                     16: of buffers for the associated file to be written to a disk.
                     17: .PP
                     18: .I Fsync
                     19: should be used by programs which require a file to be
                     20: in a known state; for example in building a simple transaction
                     21: facility.
                     22: .SH "RETURN VALUE
                     23: A 0 value is returned on success.  A \-1 value indicates
                     24: an error.
                     25: .SH "ERRORS
                     26: The \fIfsync\fP fails if:
                     27: .TP 15
                     28: [EBADF]
                     29: \fIFd\fP is not a valid descriptor.
                     30: .TP 15
                     31: [EINVAL]
                     32: \fIFd\fP refers to a socket, not to a file.
                     33: .SH "SEE ALSO"
                     34: sync(2), sync(8), update(8)
                     35: .SH BUGS
                     36: The current implementation of this call is expensive for large files.

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