Use the type alias from the types.h header.
Who knows? Maybe I will start typedeffing structs again!
NTRYCLDZVEXOM5ZNLUDSJ62ENVPXHTPHIWQS5WFFMWGOGG2GFSTQC
SMB3M6ESOIR2LMFII2VFQJSPFIUYXHD7CXYARIGOKPB2QF2ORFLAC
addr = mmap(NULL, (size_t)sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
addr = mmap(NULL, (usize)sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);