For the temp file issue, there's the common pattern of creating a file and unlinking it right away while keeping an open file handle. It's unfortunate that the

For the temp file issue, there's the common pattern of creating a file and unlinking it right away while keeping an open file handle. It's unfortunate that there's not a version of creat() that takes a path to a directory (for determining on which fs to create) but doesn't link the file, plus a version of link() that takes a source file descriptor instead of a source file. If extended to support non-file fds, the link function might also do some interesting things, like have TCP connections show up in the virtual file system, similar to Unix pipes.