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These bindings get as far as running very simple connections. However there are many missing parts still: * No callbacks. * No functions which handle buffers (pread/pwrite!) This is posted just for general early interest, not even for review. Rich.

...c_h, err := C.nbd_create () + if c_h == nil { + return nil, err + } + h := &Libnbd{h : c_h} + // Finalizers aren't guaranteed to run, but try having one anyway ... + runtime.SetFinalizer (h, (*Libnbd).Close) + return h, nil + +} + +/* All functions return ([result,] LibnbdError). */ +type LibnbdError struct { + Op string // operation which failed + Errmsg string // string (nbd_get_error) + Errno syscall.Errno // errno (nbd_get_errno) +} + +func (e *LibnbdError) String() string { + if e.Errno != 0 { + return fmt.Sprintf (\&...

...ime\" + \"syscall\" +) + +/* Handle. */ +type Libnbd struct { + h *C.struct_nbd_handle +} + +/* Convert handle to string (just for debugging). */ +func (h *Libnbd) String () string { + return \"&Libnbd{}\" +} + +/* All functions (except Close) return ([result,] LibnbdError). */ +type LibnbdError struct { + Op string // operation which failed + Errmsg string // string (nbd_get_error) + Errno syscall.Errno // errno (nbd_get_errno) +} + +func (e *LibnbdError) String() string { + if e.Errno != 0 { + return fmt.Sprintf (\&...

This feature is roughly finished now, although it needs a few more tests and some examples. It's pretty much up to par with all the other bindings, but it lacks a completely safe AIO buffer. It won't stop you from freeing the buffer too early) because golang's GC inexplicably lacks a way to declare a root from C. I can probably do it with a global variable and ref counting on the

Now runs a complete set of tests, notably including the AIO test. File descriptors are passed in and out as plain ints (instead of *os.File) for a couple of reasons: (1) We have to pass the plain int to syscall.Select. (2) Turning an fd into an os.File causes golang to set the blocking flag which is deeply unhelpful. Rich.

...st be no blank line between end comment and import! // https://github.com/golang/go/issues/9733 */ @@ -79,6 +383,7 @@ import ( \"fmt\" \"runtime\" \"syscall\" + \"unsafe\" ) /* Handle. */ @@ -147,4 +452,27 @@ func (h *Libnbd) Close () *LibnbdError { return nil } +/* Functions for translating between NULL-terminated lists of + * C strings and golang []string. + */ +func arg_string_list (xs []string) **C.char { + r := make ([]*C.char, 1 + len (xs)) + for i, x := range xs { + r[i] = C.CString (x) + } + r[len (xs)] = n...