mirror of https://gitee.com/openkylin/libvirt.git
libvirt-<module>: Check caller-provided buffers to be NULL with size > 0
Pre-Glib era which used malloc allowed the size of the client-side buffers to be declared as 0, because malloc documents that it can either return 0 or a unique pointer on 0 size allocations. With glib this doesn't work anymore, because glib documents that for such allocation requests NULL is always returned which results in an error in our public API checks server-side. This patch complements the fix in the RPC layer by explicitly erroring out on the following combination of args used by our legacy APIs (their moder equivalents don't suffer from this): function(caller-allocated-array, size, ...) { if (!caller-allocated-array && size > 0) return error; } treating everything else as a valid input and potentially let that fail on the server-side rather than client-side. https://bugzilla.redhat.com/show_bug.cgi?id=1772842 Signed-off-by: Erik Skultety <eskultet@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
parent
bf2988235c
commit
d6064e2759
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@ -429,6 +429,19 @@
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} \
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} \
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} while (0)
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} while (0)
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/* This check is intended to be used with legacy APIs only which expect the
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* caller to pre-allocate the target buffer.
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* We want to allow callers pass NULL arrays if the size is declared as 0 and
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* still succeed in calling the API.
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*/
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#define virCheckNonNullArrayArgGoto(argname, argsize, label) \
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do { \
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if (!argname && argsize > 0) { \
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virReportInvalidNonNullArg(argname); \
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goto label; \
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} \
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} while (0)
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/* Count leading zeros in an unsigned int.
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/* Count leading zeros in an unsigned int.
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*
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*
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@ -398,7 +398,7 @@ virDomainSnapshotListNames(virDomainPtr domain, char **names, int nameslen,
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virCheckDomainReturn(domain, -1);
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virCheckDomainReturn(domain, -1);
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conn = domain->conn;
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conn = domain->conn;
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, nameslen, error);
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virCheckNonNegativeArgGoto(nameslen, error);
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virCheckNonNegativeArgGoto(nameslen, error);
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if (conn->driver->domainSnapshotListNames) {
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if (conn->driver->domainSnapshotListNames) {
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@ -600,7 +600,7 @@ virDomainSnapshotListChildrenNames(virDomainSnapshotPtr snapshot,
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virCheckDomainSnapshotReturn(snapshot, -1);
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virCheckDomainSnapshotReturn(snapshot, -1);
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conn = snapshot->domain->conn;
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conn = snapshot->domain->conn;
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, nameslen, error);
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virCheckNonNegativeArgGoto(nameslen, error);
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virCheckNonNegativeArgGoto(nameslen, error);
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if (conn->driver->domainSnapshotListChildrenNames) {
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if (conn->driver->domainSnapshotListChildrenNames) {
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@ -59,7 +59,7 @@ virConnectListDomains(virConnectPtr conn, int *ids, int maxids)
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(ids, error);
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virCheckNonNullArrayArgGoto(ids, maxids, error);
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virCheckNonNegativeArgGoto(maxids, error);
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virCheckNonNegativeArgGoto(maxids, error);
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if (conn->driver->connectListDomains) {
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if (conn->driver->connectListDomains) {
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@ -6386,7 +6386,7 @@ virConnectListDefinedDomains(virConnectPtr conn, char **const names,
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->driver->connectListDefinedDomains) {
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if (conn->driver->connectListDefinedDomains) {
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@ -7298,7 +7298,7 @@ virDomainGetVcpuPinInfo(virDomainPtr domain, int ncpumaps,
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virCheckDomainReturn(domain, -1);
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virCheckDomainReturn(domain, -1);
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conn = domain->conn;
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conn = domain->conn;
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virCheckNonNullArgGoto(cpumaps, error);
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virCheckNonNullArrayArgGoto(cpumaps, ncpumaps, error);
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virCheckPositiveArgGoto(ncpumaps, error);
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virCheckPositiveArgGoto(ncpumaps, error);
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virCheckPositiveArgGoto(maplen, error);
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virCheckPositiveArgGoto(maplen, error);
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@ -10996,10 +10996,7 @@ virDomainGetDiskErrors(virDomainPtr dom,
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virCheckDomainReturn(dom, -1);
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virCheckDomainReturn(dom, -1);
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if (maxerrors)
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virCheckNonNullArrayArgGoto(errors, maxerrors, error);
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virCheckNonNullArgGoto(errors, error);
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else
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virCheckNullArgGoto(errors, error);
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if (dom->conn->driver->domainGetDiskErrors) {
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if (dom->conn->driver->domainGetDiskErrors) {
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int ret = dom->conn->driver->domainGetDiskErrors(dom, errors,
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int ret = dom->conn->driver->domainGetDiskErrors(dom, errors,
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@ -11136,10 +11133,7 @@ virDomainFSFreeze(virDomainPtr dom,
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virCheckDomainReturn(dom, -1);
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virCheckDomainReturn(dom, -1);
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virCheckReadOnlyGoto(dom->conn->flags, error);
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virCheckReadOnlyGoto(dom->conn->flags, error);
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if (nmountpoints)
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virCheckNonNullArrayArgGoto(mountpoints, nmountpoints, error);
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virCheckNonNullArgGoto(mountpoints, error);
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else
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virCheckNullArgGoto(mountpoints, error);
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if (dom->conn->driver->domainFSFreeze) {
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if (dom->conn->driver->domainFSFreeze) {
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int ret = dom->conn->driver->domainFSFreeze(
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int ret = dom->conn->driver->domainFSFreeze(
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@ -11181,10 +11175,7 @@ virDomainFSThaw(virDomainPtr dom,
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virCheckDomainReturn(dom, -1);
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virCheckDomainReturn(dom, -1);
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virCheckReadOnlyGoto(dom->conn->flags, error);
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virCheckReadOnlyGoto(dom->conn->flags, error);
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if (nmountpoints)
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virCheckNonNullArrayArgGoto(mountpoints, nmountpoints, error);
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virCheckNonNullArgGoto(mountpoints, error);
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else
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virCheckNullArgGoto(mountpoints, error);
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if (dom->conn->driver->domainFSThaw) {
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if (dom->conn->driver->domainFSThaw) {
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int ret = dom->conn->driver->domainFSThaw(
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int ret = dom->conn->driver->domainFSThaw(
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@ -910,7 +910,7 @@ virNodeGetCellsFreeMemory(virConnectPtr conn, unsigned long long *freeMems,
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(freeMems, error);
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virCheckNonNullArrayArgGoto(freeMems, maxCells, error);
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virCheckPositiveArgGoto(maxCells, error);
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virCheckPositiveArgGoto(maxCells, error);
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virCheckNonNegativeArgGoto(startCell, error);
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virCheckNonNegativeArgGoto(startCell, error);
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@ -166,7 +166,7 @@ virConnectListInterfaces(virConnectPtr conn, char **const names, int maxnames)
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->interfaceDriver && conn->interfaceDriver->connectListInterfaces) {
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if (conn->interfaceDriver && conn->interfaceDriver->connectListInterfaces) {
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@ -245,7 +245,7 @@ virConnectListDefinedInterfaces(virConnectPtr conn,
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->interfaceDriver && conn->interfaceDriver->connectListDefinedInterfaces) {
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if (conn->interfaceDriver && conn->interfaceDriver->connectListDefinedInterfaces) {
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@ -175,7 +175,7 @@ virConnectListNetworks(virConnectPtr conn, char **const names, int maxnames)
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->networkDriver && conn->networkDriver->connectListNetworks) {
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if (conn->networkDriver && conn->networkDriver->connectListNetworks) {
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@ -252,7 +252,7 @@ virConnectListDefinedNetworks(virConnectPtr conn, char **const names,
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->networkDriver && conn->networkDriver->connectListDefinedNetworks) {
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if (conn->networkDriver && conn->networkDriver->connectListDefinedNetworks) {
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@ -169,7 +169,7 @@ virNodeListDevices(virConnectPtr conn,
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->nodeDeviceDriver && conn->nodeDeviceDriver->nodeListDevices) {
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if (conn->nodeDeviceDriver && conn->nodeDeviceDriver->nodeListDevices) {
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@ -415,7 +415,7 @@ virNodeDeviceListCaps(virNodeDevicePtr dev,
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virResetLastError();
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virResetLastError();
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virCheckNodeDeviceReturn(dev, -1);
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virCheckNodeDeviceReturn(dev, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (dev->conn->nodeDeviceDriver && dev->conn->nodeDeviceDriver->nodeDeviceListCaps) {
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if (dev->conn->nodeDeviceDriver && dev->conn->nodeDeviceDriver->nodeDeviceListCaps) {
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@ -127,7 +127,7 @@ virConnectListNWFilters(virConnectPtr conn, char **const names, int maxnames)
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->nwfilterDriver && conn->nwfilterDriver->connectListNWFilters) {
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if (conn->nwfilterDriver && conn->nwfilterDriver->connectListNWFilters) {
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@ -166,7 +166,7 @@ virConnectListSecrets(virConnectPtr conn, char **uuids, int maxuuids)
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(uuids, error);
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virCheckNonNullArrayArgGoto(uuids, maxuuids, error);
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virCheckNonNegativeArgGoto(maxuuids, error);
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virCheckNonNegativeArgGoto(maxuuids, error);
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if (conn->secretDriver != NULL && conn->secretDriver->connectListSecrets != NULL) {
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if (conn->secretDriver != NULL && conn->secretDriver->connectListSecrets != NULL) {
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@ -197,7 +197,7 @@ virConnectListStoragePools(virConnectPtr conn,
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->storageDriver && conn->storageDriver->connectListStoragePools) {
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if (conn->storageDriver && conn->storageDriver->connectListStoragePools) {
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@ -277,7 +277,7 @@ virConnectListDefinedStoragePools(virConnectPtr conn,
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virResetLastError();
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virResetLastError();
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virCheckConnectReturn(conn, -1);
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virCheckConnectReturn(conn, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (conn->storageDriver && conn->storageDriver->connectListDefinedStoragePools) {
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if (conn->storageDriver && conn->storageDriver->connectListDefinedStoragePools) {
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@ -1268,7 +1268,7 @@ virStoragePoolListVolumes(virStoragePoolPtr pool,
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virResetLastError();
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virResetLastError();
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virCheckStoragePoolReturn(pool, -1);
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virCheckStoragePoolReturn(pool, -1);
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virCheckNonNullArgGoto(names, error);
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virCheckNonNullArrayArgGoto(names, maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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virCheckNonNegativeArgGoto(maxnames, error);
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if (pool->conn->storageDriver && pool->conn->storageDriver->storagePoolListVolumes) {
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if (pool->conn->storageDriver && pool->conn->storageDriver->storagePoolListVolumes) {
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