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VM_MAP_CHECK_PROTECTION(9) | Kernel Developer's Manual | VM_MAP_CHECK_PROTECTION(9) |
NAME¶
vm_map_check_protection — check memory protection for a vm_mapSYNOPSIS¶
#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 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 Bruce M Simpson ⟨bms@spc.org⟩.July 19, 2003 | Debian |