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tar/asm: fix a goroutine deadlock

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This commit is contained in:
Vincent Batts 2015-03-06 16:30:48 -05:00
parent 137c8e61c9
commit ecf0ed43a1
1 changed files with 6 additions and 2 deletions
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8
tar/asm/disassemble.go
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@ -70,11 +70,13 @@ func NewInputTarStream(r io.Reader, p storage.Packer, fp FilePutter) (io.Reader,
pW.CloseWithError(err)
}
sumChan := make(chan []byte)
var csum []byte
if hdr.Size > 0 {
sumChan := make(chan []byte)
// if there is a file payload to write, then write the file to the FilePutter
fileRdr, fileWrtr := io.Pipe()
go func() {
defer close(sumChan)
_, csum, err := fp.Put(hdr.Name, fileRdr)
if err != nil {
pW.CloseWithError(err)
@ -86,13 +88,15 @@ func NewInputTarStream(r io.Reader, p storage.Packer, fp FilePutter) (io.Reader,
return
}
fileWrtr.Close()
csum = <-sumChan
}
// File entries added, regardless of size
_, err = p.AddEntry(storage.Entry{
Type: storage.FileType,
Name: hdr.Name,
Size: hdr.Size,
Payload: <-sumChan,
Payload: csum,
})
if err != nil {
pW.CloseWithError(err)