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Merge pull request #8129 from vbatts/vbatts-archive_comments

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archive: adding comment to exported functions
Upstream-commit: ba726d9148ee616f0ad069bff6c7732815beb6c6
Component: engine
This commit is contained in:
Jessie Frazelle
2014-09-19 14:36:52 -07:00
parent 69e9467696 32e1dc80f1
commit 0539887817
1 changed files with 4 additions and 0 deletions
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4
components/engine/archive/changes.go
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@@ -58,6 +58,8 @@ func sameFsTimeSpec(a, b syscall.Timespec) bool {
(a.Nsec == b.Nsec || a.Nsec == 0 || b.Nsec == 0)
}
// Changes walks the path rw and determines changes for the files in the path,
// with respect to the parent layers
func Changes(layers []string, rw string) ([]Change, error) {
var changes []Change
err := filepath.Walk(rw, func(path string, f os.FileInfo, err error) error {
@@ -340,6 +342,7 @@ func ChangesDirs(newDir, oldDir string) ([]Change, error) {
return newRoot.Changes(oldRoot), nil
}
// ChangesSize calculates the size in bytes of the provided changes, based on newDir.
func ChangesSize(newDir string, changes []Change) int64 {
var size int64
for _, change := range changes {
@@ -362,6 +365,7 @@ func minor(device uint64) uint64 {
return (device & 0xff) | ((device >> 12) & 0xfff00)
}
// ExportChanges produces an Archive from the provided changes, relative to dir.
func ExportChanges(dir string, changes []Change) (Archive, error) {
reader, writer := io.Pipe()
tw := tar.NewWriter(writer)