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The g_file_get_contents() function returns a g_boolean. If it fails, the returned value will be 0 instead of -1. Solve the issue by skipping assigning ret value. This issue was found by Matthew Rosato using virtio-blk-{pci,ccw} backed by an NVMe partition e.g. /dev/nvme0n1p1 on s390x. Signed-off-by: Sam Li <faithilikerun@gmail.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20230727115844.8480-1-faithilikerun@gmail.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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