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archive, chrootarchive: split out decompression

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In `ApplyLayer` and `Untar`, the stream is magically decompressed. Since
this is not able to be toggled, rather than break this ./pkg/ API, add
an `ApplyUncompressedLayer` and `UntarUncompressed` that does not
magically decompress the layer stream.

Signed-off-by: Vincent Batts <vbatts@redhat.com>
This commit is contained in:
Vincent Batts 2015-07-27 09:46:20 -04:00
parent 65b22e7a78
commit f0512440f7
5 changed files with 95 additions and 28 deletions
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2
chrootarchive/archive_unix.go
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@ -49,7 +49,7 @@ func untar() {
os.Exit(0)
}
func invokeUnpack(decompressedArchive io.ReadCloser, dest string, options *archive.TarOptions) error {
func invokeUnpack(decompressedArchive io.Reader, dest string, options *archive.TarOptions) error {
// We can't pass a potentially large exclude list directly via cmd line
// because we easily overrun the kernel's max argument/environment size