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[Qemu-devel] [RFC v2 02/12] libvhost-user: exit by default on VHOST_USER
From: |
Marc-André Lureau |
Subject: |
[Qemu-devel] [RFC v2 02/12] libvhost-user: exit by default on VHOST_USER_NONE |
Date: |
Fri, 1 Jun 2018 18:27:39 +0200 |
Since commit 2566378d6d13bf4d28c7770bdbda5f7682594bbe, libvhost-user
no longer panics on disconnect (rc == 0), and instead silently ignores
an invalid VHOST_USER_NONE message.
Without extra work from the API user, this will simply busy-loop on
HUP events. The obvious thing to do is to exit(0) instead, while
additional or different work can be done by overriding
iface->process_msg().
Signed-off-by: Marc-André Lureau <address@hidden>
---
contrib/libvhost-user/libvhost-user.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/contrib/libvhost-user/libvhost-user.c
b/contrib/libvhost-user/libvhost-user.c
index 54e643d871..ebe30c7dab 100644
--- a/contrib/libvhost-user/libvhost-user.c
+++ b/contrib/libvhost-user/libvhost-user.c
@@ -1220,6 +1220,8 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
case VHOST_USER_SET_CONFIG:
return vu_set_config(dev, vmsg);
case VHOST_USER_NONE:
+ /* if you need processing before exit, override iface->process_msg */
+ exit(0);
break;
case VHOST_USER_POSTCOPY_ADVISE:
return vu_set_postcopy_advise(dev, vmsg);
--
2.17.1.906.g10fd178552
[Qemu-devel] [RFC v2 06/12] vhost-user: add vhost_user_input_get_config(), Marc-André Lureau, 2018/06/01