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Add implementation of virDomainLxcOpenNamespace to LXC driver

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The virDomainLxcOpenNamespace method needs to open every file
in /proc/$INITPID/ns and return the open file descriptor to the
client application.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2012-12-21 14:22:31 +00:00
parent 509eb51e7c
commit 2b1cd1f148
1 changed files with 49 additions and 0 deletions
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49
src/lxc/lxc_driver.c
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@ -63,6 +63,7 @@
#include "virnetdev.h"
#include "virnetdevtap.h"
#include "virnodesuspend.h"
#include "virprocess.h"
#include "virtime.h"
#include "virtypedparam.h"
#include "viruri.h"
@ -4467,6 +4468,53 @@ static int lxcDomainDetachDevice(virDomainPtr dom,
}
static int lxcDomainOpenNamespace(virDomainPtr dom,
int **fdlist,
unsigned int flags)
{
virLXCDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virLXCDomainObjPrivatePtr priv;
int ret = -1;
size_t nfds = 0;
*fdlist = NULL;
virCheckFlags(0, -1);
lxcDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
lxcDriverUnlock(driver);
if (!vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(dom->uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
priv = vm->privateData;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("Domain is not running"));
goto cleanup;
}
if (!priv->initpid) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("Init pid is not yet available"));
goto cleanup;
}
if (virProcessGetNamespaces(priv->initpid, &nfds, fdlist) < 0)
goto cleanup;
ret = nfds;
cleanup:
virDomainObjUnlock(vm);
return ret;
}
/* Function Tables */
static virDriver lxcDriver = {
.no = VIR_DRV_LXC,
@ -4544,6 +4592,7 @@ static virDriver lxcDriver = {
.domainShutdown = lxcDomainShutdown, /* 1.0.1 */
.domainShutdownFlags = lxcDomainShutdownFlags, /* 1.0.1 */
.domainReboot = lxcDomainReboot, /* 1.0.1 */
.domainLxcOpenNamespace = lxcDomainOpenNamespace, /* 1.0.2 */
};
static virStateDriver lxcStateDriver = {