1 files changed, 79 insertions, 0 deletions
diff --git a/src/common/snap_types.h b/src/common/snap_types.h
new file mode 100644
index 000000000..958aea339
--- /dev/null
+++ b/src/common/snap_types.h
@@ -0,0 +1,79 @@
+#ifndef __CEPH_SNAP_TYPES_H
+#define __CEPH_SNAP_TYPES_H
+
+#include "include/types.h"
+#include "include/fs_types.h"
+
+namespace ceph {
+class Formatter;
+}
+
+struct SnapRealmInfo {
+  mutable ceph_mds_snap_realm h;
+  std::vector<snapid_t> my_snaps;
+  std::vector<snapid_t> prior_parent_snaps;  // before parent_since
+
+  SnapRealmInfo() {
+    // FIPS zeroization audit 20191115: this memset is not security related.
+    memset(&h, 0, sizeof(h));
+  }
+  SnapRealmInfo(inodeno_t ino_, snapid_t created_, snapid_t seq_, snapid_t current_parent_since_) {
+    // FIPS zeroization audit 20191115: this memset is not security related.
+    memset(&h, 0, sizeof(h));
+    h.ino = ino_;
+    h.created = created_;
+    h.seq = seq_;
+    h.parent_since = current_parent_since_;
+  }
+  
+  inodeno_t ino() const { return inodeno_t(h.ino); }
+  inodeno_t parent() const { return inodeno_t(h.parent); }
+  snapid_t seq() const { return snapid_t(h.seq); }
+  snapid_t parent_since() const { return snapid_t(h.parent_since); }
+  snapid_t created() const { return snapid_t(h.created); }
+
+  void encode(ceph::buffer::list& bl) const;
+  void decode(ceph::buffer::list::const_iterator& bl);
+  void dump(ceph::Formatter *f) const;
+  static void generate_test_instances(std::list<SnapRealmInfo*>& o);
+};
+WRITE_CLASS_ENCODER(SnapRealmInfo)
+
+
+struct SnapContext {
+  snapid_t seq;            // 'time' stamp
+  std::vector<snapid_t> snaps;  // existent snaps, in descending order
+
+  SnapContext() {}
+  SnapContext(snapid_t s, const std::vector<snapid_t>& v) : seq(s), snaps(v) {}    
+
+  bool is_valid() const;
+
+  void clear() {
+    seq = 0;
+    snaps.clear();
+  }
+  bool empty() const { return seq == 0; }
+
+  void encode(ceph::buffer::list& bl) const {
+    using ceph::encode;
+    encode(seq, bl);
+    encode(snaps, bl);
+  }
+  void decode(ceph::buffer::list::const_iterator& bl) {
+    using ceph::decode;
+    decode(seq, bl);
+    decode(snaps, bl);
+  }
+  void dump(ceph::Formatter *f) const;
+  static void generate_test_instances(std::list<SnapContext*>& o);
+};
+WRITE_CLASS_ENCODER(SnapContext)
+
+inline std::ostream& operator<<(std::ostream& out, const SnapContext& snapc) {
+  return out << snapc.seq << "=" << snapc.snaps;
+}
+
+//}
+
+#endif