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Skopeo crashes on any invalid transport

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We need to verfy that the user entered a valid transport before attempting
to see if the transport exists,  otherwise skopeo segfaults.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
This commit is contained in:
Daniel J Walsh 2019-05-18 08:14:44 -04:00
parent 4f1fabc2a4
commit 04aee56a36
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1 changed files with 2 additions and 1 deletions
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3
cmd/skopeo/unshare_linux.go
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@ -38,7 +38,8 @@ func maybeReexec() error {
func reexecIfNecessaryForImages(imageNames ...string) error {
// Check if container-storage are used before doing unshare
for _, imageName := range imageNames {
if alltransports.TransportFromImageName(imageName).Name() == storage.Transport.Name() {
transport := alltransports.TransportFromImageName(imageName)
if transport != nil && transport.Name() == storage.Transport.Name() {
return maybeReexec()
}
}