## Host environment - Operating system: Fedora 42 - OS/kernel version: Linux 6.11.0-0.rc5.20240830git20371ba12063.47.fc42.x86_64 - Architecture: x86_64 - QEMU flavor: qemu-img - QEMU version: qemu-img-9.1.0-2.fc42.x86_64 - QEMU command line: (see description) ## Description of problem qemu with an nbd URI seems to pass the wrong export name to the server, if the exportname is `.`. This seems to be a regression in qemu 9.1, because it didn't happen in 9.0. ## Steps to reproduce ``` $ nbdkit -fv -U - null --run 'qemu-img info "nbd+unix:///.?socket=$unixsocket"' ... nbdkit: null[1]: debug: null: open readonly=0 exportname="" tls=0 ``` In qemu 9.0 this was correct: ``` nbdkit: null[1]: debug: null: open readonly=0 exportname="." tls=0 ``` <!-- The line below ensures that proper tags are added to the issue. Please do not remove it. -->