[libvirt] [PATCH 14/20] qemu: reject unknown flags

[Eric Blake]

* src/qemu/qemu_driver.c (qemudOpen, qemuDomainScreenshot)
(qemuDomainXMLFromNative, qemuDomainXMLToNative)
(qemudDomainBlockPeek, qemuCPUCompare, qemuCPUBaseline): Reject
unknown flags.
* src/qemu/qemu_migration.c (qemuMigrationConfirm): Likewise.
(_qemuMigrationCookie, qemuMigrationCookieXMLParse)
(qemuMigrationCookieXMLParseStr, qemuMigrationBakeCookie)
(qemuMigrationEatCookie): Make flags unsigned.
---
 src/qemu/qemu_driver.c    |   30 +++++++++++++++++++++++-------
 src/qemu/qemu_migration.c |   16 +++++++++-------
 2 files changed, 32 insertions(+), 14 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 4f12beb..a2fe4b8 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -800,8 +800,10 @@ static int qemuDomainSnapshotSetCurrentInactive(virDomainObjPtr vm,

 static virDrvOpenStatus qemudOpen(virConnectPtr conn,
                                   virConnectAuthPtr auth ATTRIBUTE_UNUSED,
-                                  unsigned int flags ATTRIBUTE_UNUSED)
+                                  unsigned int flags)
 {
+    virCheckFlags(0, VIR_DRV_OPEN_ERROR);
+
     if (conn->uri == NULL) {
         if (qemu_driver == NULL)
             return VIR_DRV_OPEN_DECLINED;
@@ -2686,7 +2688,7 @@ static char *
 qemuDomainScreenshot(virDomainPtr dom,
                      virStreamPtr st,
                      unsigned int screen,
-                     unsigned int flags ATTRIBUTE_UNUSED)
+                     unsigned int flags)
 {
     struct qemud_driver *driver = dom->conn->privateData;
     virDomainObjPtr vm;
@@ -2695,6 +2697,8 @@ qemuDomainScreenshot(virDomainPtr dom,
     int tmp_fd = -1;
     char *ret = NULL;

+    virCheckFlags(0, NULL);
+
     qemuDriverLock(driver);
     vm = virDomainFindByUUID(&driver->domains, dom->uuid);
     qemuDriverUnlock(driver);
@@ -3881,11 +3885,14 @@ cleanup:
 static char *qemuDomainXMLFromNative(virConnectPtr conn,
                                      const char *format,
                                      const char *config,
-                                     unsigned int flags ATTRIBUTE_UNUSED) {
+                                     unsigned int flags)
+{
     struct qemud_driver *driver = conn->privateData;
     virDomainDefPtr def = NULL;
     char *xml = NULL;

+    virCheckFlags(0, NULL);
+
     if (STRNEQ(format, QEMU_CONFIG_FORMAT_ARGV)) {
         qemuReportError(VIR_ERR_INVALID_ARG,
                         _("unsupported config type %s"), format);
@@ -3908,7 +3915,8 @@ cleanup:
 static char *qemuDomainXMLToNative(virConnectPtr conn,
                                    const char *format,
                                    const char *xmlData,
-                                   unsigned int flags ATTRIBUTE_UNUSED) {
+                                   unsigned int flags)
+{
     struct qemud_driver *driver = conn->privateData;
     virDomainDefPtr def = NULL;
     virDomainChrSourceDef monConfig;
@@ -3917,6 +3925,8 @@ static char *qemuDomainXMLToNative(virConnectPtr conn,
     char *ret = NULL;
     int i;

+    virCheckFlags(0, NULL);
+
     qemuDriverLock(driver);

     if (STRNEQ(format, QEMU_CONFIG_FORMAT_ARGV)) {
@@ -6164,12 +6174,14 @@ qemudDomainBlockPeek (virDomainPtr dom,
                       const char *path,
                       unsigned long long offset, size_t size,
                       void *buffer,
-                      unsigned int flags ATTRIBUTE_UNUSED)
+                      unsigned int flags)
 {
     struct qemud_driver *driver = dom->conn->privateData;
     virDomainObjPtr vm;
     int fd = -1, ret = -1, i;

+    virCheckFlags(0, -1);
+
     qemuDriverLock(driver);
     vm = virDomainFindByUUID(&driver->domains, dom->uuid);
     qemuDriverUnlock(driver);
@@ -7240,11 +7252,13 @@ out:
 static int
 qemuCPUCompare(virConnectPtr conn,
                const char *xmlDesc,
-               unsigned int flags ATTRIBUTE_UNUSED)
+               unsigned int flags)
 {
     struct qemud_driver *driver = conn->privateData;
     int ret = VIR_CPU_COMPARE_ERROR;

+    virCheckFlags(0, VIR_CPU_COMPARE_ERROR);
+
     qemuDriverLock(driver);

     if (!driver->caps || !driver->caps->host.cpu) {
@@ -7264,10 +7278,12 @@ static char *
 qemuCPUBaseline(virConnectPtr conn ATTRIBUTE_UNUSED,
                 const char **xmlCPUs,
                 unsigned int ncpus,
-                unsigned int flags ATTRIBUTE_UNUSED)
+                unsigned int flags)
 {
     char *cpu;

+    virCheckFlags(0, NULL);
+
     cpu = cpuBaselineXML(xmlCPUs, ncpus, NULL, 0);

     return cpu;
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index d7b27a0..a01cbd1 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -76,8 +76,8 @@ struct _qemuMigrationCookieGraphics {
 typedef struct _qemuMigrationCookie qemuMigrationCookie;
 typedef qemuMigrationCookie *qemuMigrationCookiePtr;
 struct _qemuMigrationCookie {
-    int flags;
-    int flagsMandatory;
+    unsigned int flags;
+    unsigned int flagsMandatory;

     /* Host properties */
     unsigned char localHostuuid[VIR_UUID_BUFLEN];
@@ -446,7 +446,7 @@ error:
 static int
 qemuMigrationCookieXMLParse(qemuMigrationCookiePtr mig,
                             xmlXPathContextPtr ctxt,
-                            int flags)
+                            unsigned int flags)
 {
     char uuidstr[VIR_UUID_STRING_BUFLEN];
     char *tmp;
@@ -580,7 +580,7 @@ error:
 static int
 qemuMigrationCookieXMLParseStr(qemuMigrationCookiePtr mig,
                                const char *xml,
-                               int flags)
+                               unsigned int flags)
 {
     xmlDocPtr doc = NULL;
     xmlXPathContextPtr ctxt = NULL;
@@ -614,7 +614,7 @@ qemuMigrationBakeCookie(qemuMigrationCookiePtr mig,
                         virDomainObjPtr dom,
                         char **cookieout,
                         int *cookieoutlen,
-                        int flags)
+                        unsigned int flags)
 {
     if (!cookieout || !cookieoutlen)
         return 0;
@@ -645,7 +645,7 @@ qemuMigrationEatCookie(struct qemud_driver *driver,
                        virDomainObjPtr dom,
                        const char *cookiein,
                        int cookieinlen,
-                       int flags)
+                       unsigned int flags)
 {
     qemuMigrationCookiePtr mig = NULL;

@@ -2605,7 +2605,7 @@ int qemuMigrationConfirm(struct qemud_driver *driver,
                          virDomainObjPtr vm,
                          const char *cookiein,
                          int cookieinlen,
-                         unsigned int flags ATTRIBUTE_UNUSED,
+                         unsigned int flags,
                          int retcode)
 {
     qemuMigrationCookiePtr mig;
@@ -2616,6 +2616,8 @@ int qemuMigrationConfirm(struct qemud_driver *driver,
               driver, conn, vm, NULLSTR(cookiein), cookieinlen,
               flags, retcode);

+    virCheckFlags(0, -1);
+
     if (!(mig = qemuMigrationEatCookie(driver, vm, cookiein, cookieinlen, 0)))
         return -1;

-- 
1.7.4.4