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Man Pages


Manual Reference Pages  -  VM_MAP_CHECK_PROTECTION (9)

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

This manual page was written by
.An Bruce M Simpson Aq bms@spc.org .
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