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msync.2 (108028) msync.2 (108087)
1.\" Copyright (c) 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.

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25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30.\" SUCH DAMAGE.
31.\"
32.\" @(#)msync.2 8.2 (Berkeley) 6/21/94
1.\" Copyright (c) 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.

--- 16 unchanged lines hidden (view full) ---

25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30.\" SUCH DAMAGE.
31.\"
32.\" @(#)msync.2 8.2 (Berkeley) 6/21/94
33.\" $FreeBSD: head/lib/libc/sys/msync.2 108028 2002-12-18 09:22:32Z ru $
33.\" $FreeBSD: head/lib/libc/sys/msync.2 108087 2002-12-19 09:40:28Z ru $
34.\"
35.Dd June 21, 1994
36.Dt MSYNC 2
37.Os
38.Sh NAME
39.Nm msync
40.Nd synchronize a mapped region
41.Sh LIBRARY

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74.Rv -std msync
75.Sh ERRORS
76The
77.Fn msync
78system call
79will fail if:
80.Bl -tag -width Er
81.It Bq Er EINVAL
34.\"
35.Dd June 21, 1994
36.Dt MSYNC 2
37.Os
38.Sh NAME
39.Nm msync
40.Nd synchronize a mapped region
41.Sh LIBRARY

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74.Rv -std msync
75.Sh ERRORS
76The
77.Fn msync
78system call
79will fail if:
80.Bl -tag -width Er
81.It Bq Er EINVAL
82The
82.Fa addr
83.Fa addr
84argument
83is not a multiple of the hardware page size.
84.It Bq Er EINVAL
85is not a multiple of the hardware page size.
86.It Bq Er EINVAL
87The
85.Fa len
88.Fa len
89argument
86is too large or negative.
87.It Bq Er EINVAL
90is too large or negative.
91.It Bq Er EINVAL
92The
88.Fa flags
93.Fa flags
94argument
89was both MS_ASYNC and MS_INVALIDATE.
90Only one of these flags is allowed.
91.It Bq Er EIO
92An I/O error occurred while writing to the file system.
93.El
94.Sh SEE ALSO
95.Xr madvise 2 ,
96.Xr mincore 2 ,
97.Xr mprotect 2 ,
98.Xr munmap 2
99.Sh HISTORY
100The
101.Fn msync
102system call first appeared in
103.Bx 4.4 .
95was both MS_ASYNC and MS_INVALIDATE.
96Only one of these flags is allowed.
97.It Bq Er EIO
98An I/O error occurred while writing to the file system.
99.El
100.Sh SEE ALSO
101.Xr madvise 2 ,
102.Xr mincore 2 ,
103.Xr mprotect 2 ,
104.Xr munmap 2
105.Sh HISTORY
106The
107.Fn msync
108system call first appeared in
109.Bx 4.4 .