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Fix potential NULL deref in openvz driver

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Daniel P. Berrange 2008-09-08 12:15:33 +00:00
parent 914e1c61de
commit 3aa7c4639d
2 changed files with 19 additions and 13 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Mon Sep 8 13:14:17 BST 2008 Daniel P. Berrange <berrange@redhat.com>
* src/openvz_driver.c: Fix potential NULL dereference
Mon Sep 8 09:18:17 CEST 2008 Daniel Veillard <veillard@redhat.com>
* src/storage_backend_logical.c: finish applying initialization

28
src/openvz_driver.c
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@ -276,7 +276,7 @@ static char *openvzDomainDumpXML(virDomainPtr dom, int flags) {
static int openvzDomainShutdown(virDomainPtr dom) {
struct openvz_driver *driver = (struct openvz_driver *)dom->conn->privateData;
virDomainObjPtr vm = virDomainFindByUUID(driver->domains, dom->uuid);
const char *prog[] = {VZCTL, "--quiet", "stop", vm->def->name, NULL};
const char *prog[] = {VZCTL, "--quiet", "stop", vm ? vm->def->name : NULL, NULL};
if (!vm) {
openvzError(dom->conn, VIR_ERR_INVALID_DOMAIN,
@ -303,7 +303,7 @@ static int openvzDomainReboot(virDomainPtr dom,
unsigned int flags ATTRIBUTE_UNUSED) {
struct openvz_driver *driver = (struct openvz_driver *)dom->conn->privateData;
virDomainObjPtr vm = virDomainFindByUUID(driver->domains, dom->uuid);
const char *prog[] = {VZCTL, "--quiet", "restart", vm->def->name, NULL};
const char *prog[] = {VZCTL, "--quiet", "restart", vm ? vm->def->name : NULL, NULL};
if (!vm) {
openvzError(dom->conn, VIR_ERR_INVALID_DOMAIN,
@ -581,7 +581,7 @@ openvzDomainCreate(virDomainPtr dom)
{
struct openvz_driver *driver = (struct openvz_driver *)dom->conn->privateData;
virDomainObjPtr vm = virDomainFindByName(driver->domains, dom->name);
const char *prog[] = {VZCTL, "--quiet", "start", vm->def->name, NULL };
const char *prog[] = {VZCTL, "--quiet", "start", vm ? vm->def->name : NULL, NULL };
if (!vm) {
openvzError(dom->conn, VIR_ERR_INVALID_DOMAIN,
@ -614,7 +614,7 @@ openvzDomainUndefine(virDomainPtr dom)
virConnectPtr conn= dom->conn;
struct openvz_driver *driver = (struct openvz_driver *) conn->privateData;
virDomainObjPtr vm = virDomainFindByUUID(driver->domains, dom->uuid);
const char *prog[] = { VZCTL, "--quiet", "destroy", vm->def->name, NULL };
const char *prog[] = { VZCTL, "--quiet", "destroy", vm ? vm->def->name : NULL, NULL };
if (!vm) {
openvzError(conn, VIR_ERR_INVALID_DOMAIN, _("no domain with matching uuid"));
@ -643,7 +643,7 @@ openvzDomainSetAutostart(virDomainPtr dom, int autostart)
virConnectPtr conn= dom->conn;
struct openvz_driver *driver = (struct openvz_driver *) conn->privateData;
virDomainObjPtr vm = virDomainFindByUUID(driver->domains, dom->uuid);
const char *prog[] = { VZCTL, "--quiet", "set", vm->def->name,
const char *prog[] = { VZCTL, "--quiet", "set", vm ? vm->def->name : NULL,
"--onboot", autostart ? "yes" : "no",
"--save", NULL };
@ -704,10 +704,15 @@ static int openvzDomainSetVcpus(virDomainPtr dom, unsigned int nvcpus) {
struct openvz_driver *driver = (struct openvz_driver *) conn->privateData;
virDomainObjPtr vm = virDomainFindByUUID(driver->domains, dom->uuid);
char str_vcpus[32];
const char *prog[] = { VZCTL, "--quiet", "set", vm->def->name,
const char *prog[] = { VZCTL, "--quiet", "set", vm ? vm->def->name : NULL,
"--cpus", str_vcpus, "--save", NULL };
snprintf(str_vcpus, 31, "%d", nvcpus);
str_vcpus[31] = '\0';
if (!vm) {
openvzError(conn, VIR_ERR_INVALID_DOMAIN,
_("no domain with matching uuid"));
return -1;
}
if (nvcpus <= 0) {
openvzError(conn, VIR_ERR_INTERNAL_ERROR,
@ -715,11 +720,8 @@ static int openvzDomainSetVcpus(virDomainPtr dom, unsigned int nvcpus) {
return -1;
}
if (!vm) {
openvzError(conn, VIR_ERR_INVALID_DOMAIN,
_("no domain with matching uuid"));
return -1;
}
snprintf(str_vcpus, 31, "%d", nvcpus);
str_vcpus[31] = '\0';
if (virRun(conn, prog, NULL) < 0) {
openvzError(conn, VIR_ERR_INTERNAL_ERROR,