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qemu: do not attempt to pass unopened vsock FD

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On normal vm startup, we open a file descriptor
for the vsock device in qemuProcessPrepareHost.

However, when doing domxml-to-native, no file descriptors are open.

Only pass the fd if it's not -1, to make domxml-to-native work.

https://bugzilla.redhat.com/show_bug.cgi?id=1777212

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
Ján Tomko 2022-10-20 16:19:20 +02:00
parent d1f291b4c3
commit 0b1da01ef2
1 changed files with 2 additions and 1 deletions
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3
src/qemu/qemu_command.c
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@ -9717,7 +9717,8 @@ qemuBuildVsockCommandLine(virCommand *cmd,
if (!(devprops = qemuBuildVsockDevProps(def, vsock, qemuCaps, "")))
return -1;
virCommandPassFD(cmd, priv->vhostfd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);
if (priv->vhostfd != -1)
virCommandPassFD(cmd, priv->vhostfd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);
priv->vhostfd = -1;
if (qemuCommandAddExtDevice(cmd, &vsock->info, def, qemuCaps) < 0)