Macros starting with `u' in osfmk/mach

• unix_err osfmk/mach/error.h:187
• UPL_CLR_PAGE_FREE_ON_COMMIT osfmk/mach/memory_object_types.h:293
• UPL_DIRTY_PAGE osfmk/mach/memory_object_types.h:280
• UPL_GET_INTERNAL_PAGE_LIST osfmk/mach/memory_object_types.h:309
• UPL_PAGE_PRESENT osfmk/mach/memory_object_types.h:274
• UPL_PHYS_PAGE osfmk/mach/memory_object_types.h:277
• UPL_PRECIOUS_PAGE osfmk/mach/memory_object_types.h:283
• UPL_SET_PAGE_FREE_ON_COMMIT osfmk/mach/memory_object_types.h:289
• UPL_VALID_PAGE osfmk/mach/memory_object_types.h:286