vm_map_check_protection(9) check memory protection for a vm_map


In sys/param.h In vm/vm.h In vm/vm_map.h Ft boolean_t Fo vm_map_check_protection Fa vm_map_t map vm_offset_t start vm_offset_t end vm_prot_t protection Fc


The Fn vm_map_check_protection function asserts that the target Fa map allows the specified privilege Fa protection over the entire address range from Fa start to Fa end . The region MUST be contiguous; no holes are allowed.


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.


The Fn 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.


This manual page was written by An Bruce M Simpson Aq [email protected] .