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virsh: Switch to close callback

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Since we've introduced close callbacks we can drop this SIGINT magic
(which doesn't work now neither) and fully utilize the new feature.
This commit is contained in:
Michal Privoznik 2012-08-02 19:15:16 +02:00
parent e94c0a09ee
commit 54b6334714
1 changed files with 16 additions and 29 deletions
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45
tools/virsh.c
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@ -568,31 +568,16 @@ static int disconnected = 0; /* we may have been disconnected */
/*
* vshCatchDisconnect:
*
* We get here when a SIGPIPE is being raised, we can't do much in the
* handler, just save the fact it was raised
*/
static void vshCatchDisconnect(int sig, siginfo_t *siginfo,
void *context ATTRIBUTE_UNUSED) {
if (sig == SIGPIPE ||
(SA_SIGINFO && siginfo->si_signo == SIGPIPE))
disconnected++;
}
/*
* vshSetupSignals:
*
* Catch SIGPIPE signals which may arise when disconnection
* from libvirtd occurs
* We get here when the connection was closed. We can't do much in the
* handler, just save the fact it was raised.
*/
static void
vshSetupSignals(void) {
struct sigaction sig_action;
sig_action.sa_sigaction = vshCatchDisconnect;
sig_action.sa_flags = SA_SIGINFO;
sigemptyset(&sig_action.sa_mask);
sigaction(SIGPIPE, &sig_action, NULL);
vshCatchDisconnect(virConnectPtr conn ATTRIBUTE_UNUSED,
int reason,
void *opaque ATTRIBUTE_UNUSED)
{
if (reason != VIR_CONNECT_CLOSE_REASON_CLIENT)
disconnected++;
}
/*
@ -614,10 +599,15 @@ vshReconnect(vshControl *ctl)
ctl->conn = virConnectOpenAuth(ctl->name,
virConnectAuthPtrDefault,
ctl->readonly ? VIR_CONNECT_RO : 0);
if (!ctl->conn)
if (!ctl->conn) {
vshError(ctl, "%s", _("Failed to reconnect to the hypervisor"));
else if (connected)
vshError(ctl, "%s", _("Reconnected to the hypervisor"));
} else {
if (virConnectRegisterCloseCallback(ctl->conn, vshCatchDisconnect,
NULL, NULL) < 0)
vshError(ctl, "%s", _("Unable to register disconnect callback"));
if (connected)
vshError(ctl, "%s", _("Reconnected to the hypervisor"));
}
disconnected = 0;
ctl->useGetInfo = false;
ctl->useSnapshotOld = false;
@ -2458,9 +2448,6 @@ vshInit(vshControl *ctl)
/* set up the library error handler */
virSetErrorFunc(NULL, virshErrorHandler);
/* set up the signals handlers to catch disconnections */
vshSetupSignals();
if (virEventRegisterDefaultImpl() < 0)
return false;