Add field RepoSizeMax to global.go, Add field PartialSnapshot to Snapshot

in preparation to limit repository size during backup.

cmd/restic/global.go

@@ -73,6 +73,7 @@ type GlobalOptions struct {
 	PackSize           uint
 	NoExtraVerify      bool
 	InsecureNoPassword bool
+	RepoSizeMax        uint64
 
 	backend.TransportOptions
 	limiter.Limits
@@ -485,6 +486,7 @@ func OpenRepository(ctx context.Context, opts GlobalOptions) (*repository.Reposi
 		Compression:   opts.Compression,
 		PackSize:      opts.PackSize * 1024 * 1024,
 		NoExtraVerify: opts.NoExtraVerify,
+		RepoSizeMax:   opts.RepoSizeMax,
 	})
 	if err != nil {
 		return nil, errors.Fatal(err.Error())

internal/restic/snapshot.go

@@ -25,8 +25,9 @@ type Snapshot struct {
 	Tags     []string  `json:"tags,omitempty"`
 	Original *ID       `json:"original,omitempty"`
 
-	ProgramVersion string           `json:"program_version,omitempty"`
-	Summary        *SnapshotSummary `json:"summary,omitempty"`
+	ProgramVersion  string           `json:"program_version,omitempty"`
+	PartialSnapshot bool             `json:"partial_snapshot,omitempty"`
+	Summary         *SnapshotSummary `json:"summary,omitempty"`
 
 	id *ID // plaintext ID, used during restore
 }