// List all the images for the pool.
func (p *Pool) List() ([]string, error) {
buf := make([]byte, 1024*1024)
// FIXME number of entries, but it's an undocumented call so I don't know for sure
sizeT := C.size_t(1024 * 1024)
var i C.int
if i = C.rbd_list(p.ioctx, (*C.char)(unsafe.Pointer(&buf[0])), &sizeT); i < 0 {
return nil, strerror(i)
}
// the returned string is multiple null terminated strings with a double null
// at the end. Hence GoStringN.
items := strings.Split(C.GoStringN((*C.char)(unsafe.Pointer(&buf[0])), i), string([]byte{0}))
return items[:len(items)-1], nil
}
// List all the images for the pool.
func (p *Pool) List() ([]string, error) {
list := C.CString("")
defer func() {
C.free(unsafe.Pointer(list))
}()
// FIXME number of entries, but it's an undocumented call so I don't know for sure
sizeT := C.size_t(1024 * 1024)
var i C.int
if i = C.rbd_list(p.ioctx, list, &sizeT); i < 0 {
return nil, strerror(i)
}
// the returned string is multiple null terminated strings with a double null
// at the end. Hence GoStringN.
items := strings.Split(C.GoStringN(list, i), string([]byte{0}))
return items[:len(items)-1], nil
}
// GetImageNames returns the list of current RBD images.
func GetImageNames(ioctx *rados.IOContext) (names []string, err error) {
buf := make([]byte, 4096)
for {
size := C.size_t(len(buf))
ret := C.rbd_list(C.rados_ioctx_t(ioctx.Pointer()),
(*C.char)(unsafe.Pointer(&buf[0])), &size)
if ret == -34 { // FIXME
buf = make([]byte, size)
continue
} else if ret < 0 {
return nil, RBDError(ret)
}
tmp := bytes.Split(buf[:size-1], []byte{0})
for _, s := range tmp {
if len(s) > 0 {
name := C.GoString((*C.char)(unsafe.Pointer(&s[0])))
names = append(names, name)
}
}
return names, nil
}
}
