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author | mpp <mpp@FreeBSD.org> | 1997-03-22 22:21:37 +0000 |
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committer | mpp <mpp@FreeBSD.org> | 1997-03-22 22:21:37 +0000 |
commit | 08751c4aec6de7fbcbdcd29644dfcbf0299dfe34 (patch) | |
tree | c6de788e3068b6bc2e7eca268974d0cde2aa2568 /share/man/man9/vslock.9 | |
parent | 9d7600e50e4e6b323c5e9b3c6dbc71c51101bdd6 (diff) | |
download | FreeBSD-src-08751c4aec6de7fbcbdcd29644dfcbf0299dfe34.zip FreeBSD-src-08751c4aec6de7fbcbdcd29644dfcbf0299dfe34.tar.gz |
Add vslock(9) to document the vslock() and vsunlock() kernel functions.
Obtained from: NetBSD
Diffstat (limited to 'share/man/man9/vslock.9')
-rw-r--r-- | share/man/man9/vslock.9 | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/share/man/man9/vslock.9 b/share/man/man9/vslock.9 new file mode 100644 index 0000000..0b99942 --- /dev/null +++ b/share/man/man9/vslock.9 @@ -0,0 +1,70 @@ +.\" $NetBSD: vslock.9,v 1.1 1996/06/15 20:47:29 pk Exp $ +.\" +.\" Copyright (c) 1996 The NetBSD Foundation, Inc. +.\" All rights reserved. +.\" +.\" This code is derived from software contributed to The NetBSD Foundation +.\" by Paul Kranenburg. +.\" +.\" 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 NetBSD +.\" Foundation, Inc. and its contributors. +.\" 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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. +.\" +.Dd Jun 15, 1996 +.Dt VSLOCK 9 +.Os FreeBSD +.Sh NAME +.Nm vslock , +.Nm vsunlock +.Nd lock/unlock user space addresses in memory +.Sh SYNOPSIS +.Ft void +.Fn vslock "caddr_t addr" "u_int len" +.Ft void +.Fn vsunlock "caddr_t addr" "u_int len" +.Sh DESCRIPTION +The +.Fn vslock +and +.Fn vsunlock +functions respectively lock and unlock a range of +addresses belonging to the currently running process into memory. +The actual amount of memory locked is a multiple of the machine's page size. +The starting page number is computed by truncating +.Fa addr +to the nearest preceding page boundary, and by rounding up +.Fa addr + +.Fa len +to the next page boundary. +The process context to use for this operation is taken from the +global variable +.Va curproc . +.Pp +.\" .Sh SEE ALSO +.\" .Xr physio 9 +.Sh BUGS +The process pointer should be passed in as an argument. |