On Mon, May 11, 2015 at 06:33:00 -0400, John Ferlan wrote:
On 04/30/2015 08:44 AM, Peter Krempa wrote:
> Add virDomainObjListConvert that will take a list of virDomains, apply
> filters and return a list of virDomainObjs.
> ---
> src/conf/domain_conf.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++
> src/conf/domain_conf.h | 9 ++++++++
> src/libvirt_private.syms | 1 +
> 3 files changed, 64 insertions(+)
>
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index 66fe470..73dc33f 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -23072,6 +23072,60 @@ virDomainObjListCollect(virDomainObjListPtr domlist,
>
>
> int
> +virDomainObjListConvert(virDomainObjListPtr domlist,
> + virConnectPtr conn,
> + virDomainPtr *doms,
> + size_t ndoms,
> + virDomainObjPtr **vms,
> + size_t *nvms,
> + virDomainObjListACLFilter filter,
> + unsigned int flags,
> + bool skip_missing)
> +{
> + char uuidstr[VIR_UUID_STRING_BUFLEN];
> + virDomainObjPtr vm;
> + size_t i;
> +
> + *nvms = 0;
> + *vms = NULL;
> +
> + virObjectLock(domlist);
> + for (i = 0; i < ndoms; i++) {
> + virDomainPtr dom = doms[i];
> +
> + virUUIDFormat(dom->uuid, uuidstr);
> +
> + if (!(vm = virHashLookup(domlist->objs, uuidstr))) {
> + if (!skip_missing) {
> + virReportError(VIR_ERR_NO_DOMAIN,
> + _("no domain with matching uuid '%s'
(%s)"),
> + uuidstr, dom->name);
> + virObjectUnlock(domlist);
> + goto error;
> + }
> + } else {
> + virObjectRef(vm);
> +
> + if (VIR_APPEND_ELEMENT(*vms, *nvms, vm) < 0)
> + goto error;
> + }
> + }
> + virObjectUnlock(domlist);
> +
> + virDomainObjListFilter(vms, nvms, conn, filter, flags);
Coverity complains here too - if 'vms' is NULL, then ObjListFilter
derefs. Coverity shows an example of ndoms == 2 and for each iteration
through the loop it takes the skip_missing path.
False positive again. If every domain is skipped, then nvms will never
be incremented from it's 0 state where it was pre-set.
virDomainObjListFilter then iterates from 0 while it's less than the
value stored in ndoms ( which is 0) thus it never touches @vms.
Peter