1.\" 2.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.Dd July 19, 2003 27.Dt VM_MAP_CHECK_PROTECTION 9 28.Os 29.Sh NAME 30.Nm vm_map_check_protection 31.Nd check memory protection for a vm_map 32.Sh SYNOPSIS 33.In sys/param.h 34.In vm/vm.h 35.In vm/vm_map.h 36.Ft boolean_t 37.Fo vm_map_check_protection 38.Fa "vm_map_t map" "vm_offset_t start" "vm_offset_t end" "vm_prot_t protection" 39.Fc 40.Sh DESCRIPTION 41The 42.Fn vm_map_check_protection 43function asserts that the target 44.Fa map 45allows the specified privilege 46.Fa protection 47over the entire address range from 48.Fa start 49to 50.Fa end . 51The region MUST be contiguous; no holes are allowed. 52.Sh IMPLEMENTATION NOTES 53This code does not and SHOULD not check whether the contents of 54the region are accessible. 55For example, a small file may be mapped into an address space which 56is significantly larger in size. 57.Sh RETURN VALUES 58The 59.Fn vm_map_check_protection 60function returns TRUE if the privilege is allowed; if it is not allowed, 61or if any other error occurred, the value FALSE is returned. 62.Sh SEE ALSO 63.Xr munmap 2 , 64.Xr vm_map 9 , 65.Xr vm_map_protect 9 66.Sh AUTHORS 67This manual page was written by 68.An Bruce M Simpson Aq Mt bms@spc.org . 69