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qemu: Implement virDomainOpenChannel API

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This commit is contained in:
John Eckersberg 2013-01-02 10:38:54 -05:00 committed by Eric Blake
parent 66a0664974
commit 346e43ecfd
1 changed files with 73 additions and 0 deletions
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73
src/qemu/qemu_driver.c
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@ -12593,6 +12593,78 @@ cleanup:
return ret;
}
static int
qemuDomainOpenChannel(virDomainPtr dom,
const char *name,
virStreamPtr st,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int ret = -1;
int i;
virDomainChrDefPtr chr = NULL;
qemuDomainObjPrivatePtr priv;
virCheckFlags(VIR_DOMAIN_CHANNEL_FORCE, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
goto cleanup;
}
priv = vm->privateData;
if (name) {
for (i = 0 ; !chr && i < vm->def->nchannels ; i++) {
if (STREQ(name, vm->def->channels[i]->info.alias))
chr = vm->def->channels[i];
if (vm->def->channels[i]->targetType == \
VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO &&
STREQ(name, vm->def->channels[i]->target.name))
chr = vm->def->channels[i];
}
} else {
if (vm->def->nchannels)
chr = vm->def->channels[0];
}
if (!chr) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find channel %s"),
NULLSTR(name));
goto cleanup;
}
if (chr->source.type != VIR_DOMAIN_CHR_TYPE_UNIX) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("channel %s is not using a UNIX socket"),
NULLSTR(name));
goto cleanup;
}
/* handle mutually exclusive access to channel devices */
ret = virChrdevOpen(priv->devs,
&chr->source,
st,
(flags & VIR_DOMAIN_CHANNEL_FORCE) != 0);
if (ret == 1) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Active channel stream exists for this domain"));
ret = -1;
}
cleanup:
if (vm)
virDomainObjUnlock(vm);
return ret;
}
static char *
qemuDiskPathToAlias(virDomainObjPtr vm, const char *path, int *idx)
{
@ -14694,6 +14766,7 @@ static virDriver qemuDriver = {
.nodeSetMemoryParameters = nodeSetMemoryParameters, /* 0.10.2 */
.nodeGetCPUMap = nodeGetCPUMap, /* 1.0.0 */
.domainFSTrim = qemuDomainFSTrim, /* 1.0.1 */
.domainOpenChannel = qemuDomainOpenChannel, /* 1.0.2 */
};