ceph/src/cls/refcount/cls_refcount_client.cc

   1 #include <errno.h>
   2
   3 #include "cls/refcount/cls_refcount_client.h"
   4 #include "cls/refcount/cls_refcount_ops.h"
   5 #include "include/rados/librados.hpp"
   6
   7 using namespace librados;
   8
   9
  10 void cls_refcount_get(librados::ObjectWriteOperation& op, const string& tag, bool implicit_ref)
  11 {
  12   bufferlist in;
  13   cls_refcount_get_op call;
  14   call.tag = tag;
  15   call.implicit_ref = implicit_ref;
  16   ::encode(call, in);
  17   op.exec("refcount", "get", in);
  18 }
  19
  20 void cls_refcount_put(librados::ObjectWriteOperation& op, const string& tag, bool implicit_ref)
  21 {
  22   bufferlist in;
  23   cls_refcount_put_op call;
  24   call.tag = tag;
  25   call.implicit_ref = implicit_ref;
  26   ::encode(call, in);
  27   op.exec("refcount", "put", in);
  28 }
  29
  30 void cls_refcount_set(librados::ObjectWriteOperation& op, list<string>& refs)
  31 {
  32   bufferlist in;
  33   cls_refcount_set_op call;
  34   call.refs = refs;
  35   ::encode(call, in);
  36   op.exec("refcount", "set", in);
  37 }
  38
  39 int cls_refcount_read(librados::IoCtx& io_ctx, string& oid, list<string> *refs, bool implicit_ref)
  40 {
  41   bufferlist in, out;
  42   cls_refcount_read_op call;
  43   call.implicit_ref = implicit_ref;
  44   ::encode(call, in);
  45   int r = io_ctx.exec(oid, "refcount", "read", in, out);
  46   if (r < 0)
  47     return r;
  48
  49   cls_refcount_read_ret ret;
  50   try {
  51     bufferlist::iterator iter = out.begin();
  52     ::decode(ret, iter);
  53   } catch (buffer::error& err) {
  54     return -EIO;
  55   }
  56
  57   *refs = ret.refs;
  58
  59   return r;
  60 }