77e8b9ca64
Before: $ ./qemu-io-old qemu-io-old> open -r -o file.driver=nbd one of path and host must be specified. qemu-io-old: can't open device (null): Could not open image: Invalid argument $ ./qemu-io-old qemu-io-old> open -r -o file.driver=nbd,file.host=foo,file.path=bar path and host may not be used at the same time. qemu-io-old: can't open device (null): Could not open image: Invalid argument After: $ ./qemu-io qemu-io> open -r -o file.driver=nbd qemu-io: can't open device (null): one of path and host must be specified. $ ./qemu-io qemu-io> open -r -o file.driver=nbd,file.host=foo,file.path=bar qemu-io: can't open device (null): path and host may not be used at the same time. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>