libpod: still attempt to read the oci log file if not output

if we didn't receive any data on the pipe, still attempt to read the
specified log file.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/libpod/oci_internal_linux.go b/libpod/oci_internal_linux.go
index 6e4ee2cf2..e7ed32272 100644
--- a/libpod/oci_internal_linux.go
+++ b/libpod/oci_internal_linux.go
@@ -449,6 +449,15 @@ func readConmonPipeData(pipe *os.File, ociLog string) (int, error) {
 	select {
 	case ss := <-ch:
 		if ss.err != nil {
+			if ociLog != "" {
+				ociLogData, err := ioutil.ReadFile(ociLog)
+				if err == nil {
+					var ociErr ociError
+					if err := json.Unmarshal(ociLogData, &ociErr); err == nil {
+						return -1, getOCIRuntimeError(ociErr.Msg)
+					}
+				}
+			}
 			return -1, errors.Wrapf(ss.err, "error reading container (probably exited) json message")
 		}
 		logrus.Debugf("Received: %d", ss.si.Data)