package cephfs /* #cgo LDFLAGS: -lcephfs #cgo CPPFLAGS: -D_FILE_OFFSET_BITS=64 #include #include */ import "C" import ( "unsafe" "github.com/ceph/go-ceph/internal/cutil" ) func cephBufferFree(p unsafe.Pointer) { C.ceph_buffer_free((*C.char)(p)) } // MdsCommand sends commands to the specified MDS. func (mount *MountInfo) MdsCommand(mdsSpec string, args [][]byte) ([]byte, string, error) { return mount.mdsCommand(mdsSpec, args, nil) } // MdsCommandWithInputBuffer sends commands to the specified MDS, with an input // buffer. func (mount *MountInfo) MdsCommandWithInputBuffer(mdsSpec string, args [][]byte, inputBuffer []byte) ([]byte, string, error) { return mount.mdsCommand(mdsSpec, args, inputBuffer) } // mdsCommand supports sending formatted commands to MDS. // // Implements: // // int ceph_mds_command(struct ceph_mount_info *cmount, // const char *mds_spec, // const char **cmd, // size_t cmdlen, // const char *inbuf, size_t inbuflen, // char **outbuf, size_t *outbuflen, // char **outs, size_t *outslen); func (mount *MountInfo) mdsCommand(mdsSpec string, args [][]byte, inputBuffer []byte) (buffer []byte, info string, err error) { spec := C.CString(mdsSpec) defer C.free(unsafe.Pointer(spec)) ci := cutil.NewCommandInput(args, inputBuffer) defer ci.Free() co := cutil.NewCommandOutput().SetFreeFunc(cephBufferFree) defer co.Free() ret := C.ceph_mds_command( mount.mount, // cephfs mount ref spec, // mds spec (**C.char)(ci.Cmd()), C.size_t(ci.CmdLen()), (*C.char)(ci.InBuf()), C.size_t(ci.InBufLen()), (**C.char)(co.OutBuf()), (*C.size_t)(co.OutBufLen()), (**C.char)(co.Outs()), (*C.size_t)(co.OutsLen())) buf, status := co.GoValues() return buf, status, getError(ret) }