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VM_MAP_CHECK_PROTECTION (9) | Kernel routines | Unix Manual Pages | :man▋
NAME
vm_map_check_protection - check memory protection for a vm_map
CONTENTS
Synopsis
Description
Implementation Notes
Return Values
See Also
Authors
SYNOPSIS
.In sys/param.h
.In vm/vm.h
.In vm/vm_map.h boolean_t
.Fo vm_map_check_protection "vm_map_t map" "vm_offset_t start" "vm_offset_t end" "vm_prot_t protection"
.Fc
DESCRIPTION
The vm_map_check_protection function asserts that the target map allows the specified privilege protection over the entire address range from start to end. The region MUST be contiguous; no holes are allowed.
IMPLEMENTATION NOTES
This code does not and SHOULD not check whether the contents of the region are accessible. For example, a small file may be mapped into an address space which is significantly larger in size.
RETURN VALUES
The vm_map_check_protection function returns TRUE if the privilege is allowed; if it is not allowed, or if any other error occurred, the value FALSE is returned.
SEE ALSO
munmap(2), vm_map(9), vm_map_protect(9)
AUTHORS
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