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

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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>
This commit is contained in:
Aaron Lehmann 2015-07-23 14:19:58 -07:00
parent 56efe43c95
commit cfb0b7aa77
2 changed files with 4 additions and 4 deletions
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2
docs/registry_test.go
View file

@ -185,7 +185,7 @@ func TestGetRemoteImageJSON(t *testing.T) {
if err != nil {
t.Fatal(err)
}
assertEqual(t, size, 154, "Expected size 154")
assertEqual(t, size, int64(154), "Expected size 154")
if len(json) <= 0 {
t.Fatal("Expected non-empty json")
}

6
docs/session.go
View file

@ -240,7 +240,7 @@ func (r *Session) LookupRemoteImage(imgID, registry string) error {
}
// GetRemoteImageJSON retrieves an image's JSON metadata from the registry.
func (r *Session) GetRemoteImageJSON(imgID, registry string) ([]byte, int, error) {
func (r *Session) GetRemoteImageJSON(imgID, registry string) ([]byte, int64, error) {
res, err := r.client.Get(registry + "images/" + imgID + "/json")
if err != nil {
return nil, -1, fmt.Errorf("Failed to download json: %s", err)
@ -250,9 +250,9 @@ func (r *Session) GetRemoteImageJSON(imgID, registry string) ([]byte, int, error
return nil, -1, httputils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d", res.StatusCode), res)
}
// if the size header is not present, then set it to '-1'
imageSize := -1
imageSize := int64(-1)
if hdr := res.Header.Get("X-Docker-Size"); hdr != "" {
imageSize, err = strconv.Atoi(hdr)
imageSize, err = strconv.ParseInt(hdr, 10, 64)
if err != nil {
return nil, -1, err
}