rebase: update go-ceph to v0.8.0

Updating go-ceph to v0.8.0.

Signed-off-by: Mudit Agarwal <muagarwa@redhat.com>

vendor/github.com/ceph/go-ceph/rados/write_op.go

@@ -0,0 +1,179 @@
+package rados
+
+// #cgo LDFLAGS: -lrados
+// #include <errno.h>
+// #include <stdlib.h>
+// #include <rados/librados.h>
+//
+import "C"
+
+import (
+	"unsafe"
+
+	ts "github.com/ceph/go-ceph/internal/timespec"
+)
+
+// Timespec is a public type for the internal C 'struct timespec'
+type Timespec ts.Timespec
+
+// WriteOp manages a set of discrete actions that will be performed together
+// atomically.
+type WriteOp struct {
+	operation
+	op C.rados_write_op_t
+}
+
+// CreateWriteOp returns a newly constructed write operation.
+func CreateWriteOp() *WriteOp {
+	return &WriteOp{
+		op: C.rados_create_write_op(),
+	}
+}
+
+// Release the resources associated with this write operation.
+func (w *WriteOp) Release() {
+	C.rados_release_write_op(w.op)
+	w.op = nil
+	w.free()
+}
+
+func (w WriteOp) operate2(
+	ioctx *IOContext, oid string, mtime *Timespec, flags OperationFlags) error {
+
+	if err := ioctx.validate(); err != nil {
+		return err
+	}
+
+	cOid := C.CString(oid)
+	defer C.free(unsafe.Pointer(cOid))
+	var cMtime *C.struct_timespec
+	if mtime != nil {
+		cMtime = &C.struct_timespec{}
+		ts.CopyToCStruct(
+			ts.Timespec(*mtime),
+			ts.CTimespecPtr(cMtime))
+	}
+
+	ret := C.rados_write_op_operate2(
+		w.op, ioctx.ioctx, cOid, cMtime, C.int(flags))
+	return w.update(writeOp, ret)
+}
+
+// Operate will perform the operation(s).
+func (w *WriteOp) Operate(ioctx *IOContext, oid string, flags OperationFlags) error {
+	return w.operate2(ioctx, oid, nil, flags)
+}
+
+// OperateWithMtime will perform the operation while setting the modification
+// time stamp to the supplied value.
+func (w *WriteOp) OperateWithMtime(
+	ioctx *IOContext, oid string, mtime Timespec, flags OperationFlags) error {
+
+	return w.operate2(ioctx, oid, &mtime, flags)
+}
+
+func (w *WriteOp) operateCompat(ioctx *IOContext, oid string) error {
+	switch err := w.Operate(ioctx, oid, OperationNoFlag).(type) {
+	case nil:
+		return nil
+	case OperationError:
+		return err.OpError
+	default:
+		return err
+	}
+}
+
+// Create a rados object.
+func (w *WriteOp) Create(exclusive CreateOption) {
+	// category, the 3rd param, is deprecated and has no effect so we do not
+	// implement it in go-ceph
+	C.rados_write_op_create(w.op, C.int(exclusive), nil)
+}
+
+//  SetOmap appends the map `pairs` to the omap `oid`.
+func (w *WriteOp) SetOmap(pairs map[string][]byte) {
+	sos := newSetOmapStep(pairs)
+	w.steps = append(w.steps, sos)
+	C.rados_write_op_omap_set(
+		w.op,
+		sos.cKeys,
+		sos.cValues,
+		sos.cLengths,
+		sos.cNum)
+}
+
+// RmOmapKeys removes the specified `keys` from the omap `oid`.
+func (w *WriteOp) RmOmapKeys(keys []string) {
+	roks := newRemoveOmapKeysStep(keys)
+	w.steps = append(w.steps, roks)
+	C.rados_write_op_omap_rm_keys(
+		w.op,
+		roks.cKeys,
+		roks.cNum)
+}
+
+// CleanOmap clears the omap `oid`.
+func (w *WriteOp) CleanOmap() {
+	C.rados_write_op_omap_clear(w.op)
+}
+
+// AssertExists assures the object targeted by the write op exists.
+//
+// Implements:
+//  void rados_write_op_assert_exists(rados_write_op_t write_op);
+func (w *WriteOp) AssertExists() {
+	C.rados_write_op_assert_exists(w.op)
+}
+
+// Write a given byte slice at the supplied offset.
+//
+// Implements:
+//  void rados_write_op_write(rados_write_op_t write_op,
+//                                       const char *buffer,
+//                                       size_t len,
+//                                       uint64_t offset);
+func (w *WriteOp) Write(b []byte, offset uint64) {
+	oe := newWriteStep(b, 0, offset)
+	w.steps = append(w.steps, oe)
+	C.rados_write_op_write(
+		w.op,
+		oe.cBuffer,
+		oe.cDataLen,
+		oe.cOffset)
+}
+
+// WriteFull writes a given byte slice as the whole object,
+// atomically replacing it.
+//
+// Implements:
+//  void rados_write_op_write_full(rados_write_op_t write_op,
+//                                 const char *buffer,
+//                                 size_t len);
+func (w *WriteOp) WriteFull(b []byte) {
+	oe := newWriteStep(b, 0, 0)
+	w.steps = append(w.steps, oe)
+	C.rados_write_op_write_full(
+		w.op,
+		oe.cBuffer,
+		oe.cDataLen)
+}
+
+// WriteSame write a given byte slice to the object multiple times, until
+// writeLen is satisfied.
+//
+// Implements:
+//  void rados_write_op_writesame(rados_write_op_t write_op,
+//                                const char *buffer,
+//                                size_t data_len,
+//                                size_t write_len,
+//                                uint64_t offset);
+func (w *WriteOp) WriteSame(b []byte, writeLen, offset uint64) {
+	oe := newWriteStep(b, writeLen, offset)
+	w.steps = append(w.steps, oe)
+	C.rados_write_op_writesame(
+		w.op,
+		oe.cBuffer,
+		oe.cDataLen,
+		oe.cWriteLen,
+		oe.cOffset)
+}