[libvirt] [PATCH v3 21/28] security_manager: Introduce virSecurityManagerLockCloseConn
John Ferlan
jferlan at redhat.com
Fri Aug 31 18:42:55 UTC 2018
On 08/27/2018 04:08 AM, Michal Privoznik wrote:
> This is basically just a wrapper over virLockManagerCloseConn()
> so that no connection is left open when it shouldn't be.
>
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---
> src/security/security_manager.c | 75 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 75 insertions(+)
>
> diff --git a/src/security/security_manager.c b/src/security/security_manager.c
> index caaff1f703..2238c75a5c 100644
> --- a/src/security/security_manager.c
> +++ b/src/security/security_manager.c
> @@ -91,6 +91,56 @@ virSecurityManagerLockDispose(void *obj)
> }
>
>
> +static void
> +virSecurityManagerLockCloseConnLocked(virSecurityManagerLockPtr lock,
> + bool force)
> +{
> + int rc;
> +
> + if (!lock)
> + return;
Not possible - if this is true you may just want to abort or let the
following code fail miserably. The definition of the API is that it's
called when @lock is locked!
> +
> + while (!force &&
> + lock->pathLocked) {
No need to split && across 2 lines. Still waiting for @pathLocked =
true ;-)
> + if (virCondWait(&lock->cond, &lock->parent.lock) < 0) {
> + VIR_WARN("Unable to wait on metadata condition");
> + return;
> + }
> + }
> +
> + rc = virLockManagerCloseConn(lock->lock, 0);
still haven't filled in lock->lock either
> + if (rc < 0)
> + return;
> + if (rc > 0)
> + lock->lock = NULL;
> +
> + if (force) {
> + /* We've closed the connection. Wake up anybody who might be
s/the/our/
> + * waiting. */
> + lock->pathLocked = false;
> + virCondSignal(&lock->cond);
> + }
> +}
> +
> +
> +static void
> +virSecurityManagerLockCloseConn(virSecurityManagerLockPtr lock)
> +{
> + if (!lock)
> + return;
So this is lock->lock from a few patches ago.
> +
> + virObjectLock(lock);
> +
> + if (!lock->lock)
Still not seeing lock->lock, but maybe the next patch exposes that part.
> + goto cleanup;
> +
> + virSecurityManagerLockCloseConnLocked(lock, false);
> +
> + cleanup:
> + virObjectUnlock(lock);
> +}
> +
> +
I'm staring blankly at the rest of changes wondering, hmmmm... what am I
missing.
Beyond that if the mgr->drv->*(mgr) isn't called, then should we call
the CloseConn. I'm not seeing why it's called in the first place!
John
> static int
> virSecurityManagerOnceInit(void)
> {
> @@ -334,6 +384,7 @@ virSecurityManagerTransactionStart(virSecurityManagerPtr mgr)
> virObjectLock(mgr);
> if (mgr->drv->transactionStart)
> ret = mgr->drv->transactionStart(mgr);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -362,6 +413,7 @@ virSecurityManagerTransactionCommit(virSecurityManagerPtr mgr,
> virObjectLock(mgr);
> if (mgr->drv->transactionCommit)
> ret = mgr->drv->transactionCommit(mgr, pid);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -379,6 +431,7 @@ virSecurityManagerTransactionAbort(virSecurityManagerPtr mgr)
> virObjectLock(mgr);
> if (mgr->drv->transactionAbort)
> mgr->drv->transactionAbort(mgr);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> }
>
> @@ -487,6 +540,7 @@ virSecurityManagerRestoreDiskLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityDiskLabel(mgr, vm, disk);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -515,6 +569,7 @@ virSecurityManagerRestoreImageLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityImageLabel(mgr, vm, src);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -532,6 +587,7 @@ virSecurityManagerSetDaemonSocketLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityDaemonSocketLabel(mgr, vm);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -549,6 +605,7 @@ virSecurityManagerSetSocketLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecuritySocketLabel(mgr, vm);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -566,6 +623,7 @@ virSecurityManagerClearSocketLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainClearSecuritySocketLabel(mgr, vm);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -595,6 +653,7 @@ virSecurityManagerSetDiskLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityDiskLabel(mgr, vm, disk);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -623,6 +682,7 @@ virSecurityManagerSetImageLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityImageLabel(mgr, vm, src);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -642,6 +702,7 @@ virSecurityManagerRestoreHostdevLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityHostdevLabel(mgr, vm, dev, vroot);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -661,6 +722,7 @@ virSecurityManagerSetHostdevLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityHostdevLabel(mgr, vm, dev, vroot);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -679,6 +741,7 @@ virSecurityManagerSetSavedStateLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSavedStateLabel(mgr, vm, savefile);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -696,6 +759,7 @@ virSecurityManagerRestoreSavedStateLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSavedStateLabel(mgr, vm, savefile);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -939,6 +1003,7 @@ virSecurityManagerSetAllLabel(virSecurityManagerPtr mgr,
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityAllLabel(mgr, vm, stdin_path,
> chardevStdioLogd);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -959,6 +1024,7 @@ virSecurityManagerRestoreAllLabel(virSecurityManagerPtr mgr,
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityAllLabel(mgr, vm, migrated,
> chardevStdioLogd);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1140,6 +1206,7 @@ virSecurityManagerDomainSetPathLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetPathLabel(mgr, vm, path, allowSubtree);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1167,6 +1234,7 @@ virSecurityManagerSetMemoryLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityMemoryLabel(mgr, vm, mem);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1195,6 +1263,7 @@ virSecurityManagerRestoreMemoryLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityMemoryLabel(mgr, vm, mem);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1213,6 +1282,7 @@ virSecurityManagerSetInputLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityInputLabel(mgr, vm, input);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1231,6 +1301,7 @@ virSecurityManagerRestoreInputLabel(virSecurityManagerPtr mgr,
> int ret;
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityInputLabel(mgr, vm, input);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1251,6 +1322,7 @@ virSecurityManagerSetChardevLabel(virSecurityManagerPtr mgr,
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityChardevLabel(mgr, def, dev_source,
> chardevStdioLogd);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1271,6 +1343,7 @@ virSecurityManagerRestoreChardevLabel(virSecurityManagerPtr mgr,
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityChardevLabel(mgr, def, dev_source,
> chardevStdioLogd);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
> return ret;
> }
> @@ -1289,6 +1362,7 @@ virSecurityManagerSetTPMLabels(virSecurityManagerPtr mgr,
> if (mgr->drv->domainSetSecurityTPMLabels) {
> virObjectLock(mgr);
> ret = mgr->drv->domainSetSecurityTPMLabels(mgr, vm);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
>
> return ret;
> @@ -1307,6 +1381,7 @@ virSecurityManagerRestoreTPMLabels(virSecurityManagerPtr mgr,
> if (mgr->drv->domainRestoreSecurityTPMLabels) {
> virObjectLock(mgr);
> ret = mgr->drv->domainRestoreSecurityTPMLabels(mgr, vm);
> + virSecurityManagerLockCloseConn(mgr->lock);
> virObjectUnlock(mgr);
>
> return ret;
>
More information about the libvir-list
mailing list