vm_map_check_protection(9)
NAME
- vm_map_check_protection - check memory protection for a
- vm_map
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h>
boolean_t
vm_map_check_protection(vm_map_t map, vm_offset_t start,
vm_offset_t end,
vm_prot_t protection);
DESCRIPTION
- The vm_map_check_protection() function asserts that the tar
- get 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 oc - curred, the value
FALSE is returned.
SEE ALSO
munmap(2), vm_map(9), vm_map_protect(9)
AUTHORS
- This manual page was written by Bruce M Simpson
- <bms@spc.org>.
- BSD July 19, 2003