Fix uses of "int" where "int64" should be used instead

Some structures use int for sizes and UNIX timestamps. On some
platforms, int is 32 bits, so this can lead to the year 2038 issues and
overflows when dealing with large containers or layers.

Consistently use int64 to store sizes and UNIX timestamps in
api/types/types.go. Update related to code accordingly (i.e.
strconv.FormatInt instead of strconv.Itoa).

Use int64 in progressreader package to avoid integer overflow when
dealing with large quantities. Update related code accordingly.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Upstream-commit: 1f61084d83aea37b212468aaa975020094b7f7c9
Component: engine

components/engine/pkg/jsonmessage/jsonmessage.go

@@ -23,8 +23,8 @@ func (e *JSONError) Error() string {
 
 type JSONProgress struct {
 	terminalFd uintptr
-	Current    int   `json:"current,omitempty"`
-	Total      int   `json:"total,omitempty"`
+	Current    int64 `json:"current,omitempty"`
+	Total      int64 `json:"total,omitempty"`
 	Start      int64 `json:"start,omitempty"`
 }
 
@@ -64,7 +64,7 @@ func (p *JSONProgress) String() string {
 	numbersBox = fmt.Sprintf("%8v/%v", current, total)
 
 	if p.Current > 0 && p.Start > 0 && percentage < 50 {
-		fromStart := time.Now().UTC().Sub(time.Unix(int64(p.Start), 0))
+		fromStart := time.Now().UTC().Sub(time.Unix(p.Start, 0))
 		perEntry := fromStart / time.Duration(p.Current)
 		left := time.Duration(p.Total-p.Current) * perEntry
 		left = (left / time.Second) * time.Second