Re: [libvirt] [PATCH v3 5/5] tools: console: pass stream/fd errors to user

If the console was disconnected due to a connection problem or a problem on the server side it is convinient to provide the cause to the user. If the error come from the API then the error is saved in a virsh global variable. However, since success is returned from virshRunConsole after we reach the waiting stage, then the error is never reported. Let's track the error in the event loop. Next after failure we do a cleanup and this cleanup can overwrite root cause. Thus let's save root cause immediately and then set it to virsh error after all cleanup is done. Since we'll be sending the error to the consumer, each failure path from the event handlers needs to be augmented to provide what error generated the failure. Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy(a)virtuozzo.com&gt; --- tools/virsh-console.c | 55 +++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 47 insertions(+), 8 deletions(-) diff --git a/tools/virsh-console.c b/tools/virsh-console.c index d109734..236933a 100644 --- a/tools/virsh-console.c +++ b/tools/virsh-console.c @@ -73,6 +73,7 @@ struct virConsole { struct virConsoleBuffer terminalToStream; char escapeChar; + virError error; }; static virClassPtr virConsoleClass; @@ -98,6 +99,11 @@ virConsoleHandleSignal(int sig ATTRIBUTE_UNUSED) static void virConsoleShutdown(virConsolePtr con) { + virErrorPtr err = virGetLastError(); + + if (con->error.code == VIR_ERR_OK && err && err->code != VIR_ERR_OK) + virCopyLastError(&con->error); +