virnetdev: fix some issues found by coverity and mingw builds

Commit e562a61a introduced new function to get/set interface state but
there was misuse of ATTRIBUTE_NONNULL on non-pointer attributes and also
we need to wrap that functions by #ifdef to not break mingw build.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>

src/util/virnetdev.c

@@ -66,6 +66,18 @@ VIR_LOG_INIT("util.netdev");
 #define VIR_MCAST_TOKEN_DELIMS " \n"
 #define VIR_MCAST_ADDR_LEN (VIR_MAC_HEXLEN + 1)
 
+#if defined(SIOCSIFFLAGS) && defined(HAVE_STRUCT_IFREQ)
+# define VIR_IFF_UP IFF_UP
+# define VIR_IFF_PROMISC IFF_PROMISC
+# define VIR_IFF_MULTICAST IFF_MULTICAST
+# define VIR_IFF_ALLMULTI IFF_ALLMULTI
+#else
+# define VIR_IFF_UP 0
+# define VIR_IFF_PROMISC 0
+# define VIR_IFF_MULTICAST 0
+# define VIR_IFF_ALLMULTI 0
+#endif
+
 typedef enum {
     VIR_MCAST_TYPE_INDEX_TOKEN,
     VIR_MCAST_TYPE_NAME_TOKEN,
@@ -673,11 +685,12 @@ virNetDevSetIFFlag(const char *ifname,
  *
  * Returns 0 in case of success or -1 on error.
  */
-int virNetDevSetOnline(const char *ifname,
+int
+virNetDevSetOnline(const char *ifname,
                    bool online)
 {
 
-    return virNetDevSetIFFlag(ifname, IFF_UP, online);
+    return virNetDevSetIFFlag(ifname, VIR_IFF_UP, online);
 }
 
 /**
@@ -691,10 +704,11 @@ int virNetDevSetOnline(const char *ifname,
  *
  * Returns 0 in case of success or -1 on error.
  */
-int virNetDevSetPromiscuous(const char *ifname,
+int
+virNetDevSetPromiscuous(const char *ifname,
                         bool promiscuous)
 {
-    return virNetDevSetIFFlag(ifname, IFF_PROMISC, promiscuous);
+    return virNetDevSetIFFlag(ifname, VIR_IFF_PROMISC, promiscuous);
 }
 
 /**
@@ -709,10 +723,11 @@ int virNetDevSetPromiscuous(const char *ifname,
  *
  * Returns 0 in case of success or -1 on error.
  */
-int virNetDevSetRcvMulti(const char *ifname,
+int
+virNetDevSetRcvMulti(const char *ifname,
                      bool receive)
 {
-    return virNetDevSetIFFlag(ifname, IFF_MULTICAST, receive);
+    return virNetDevSetIFFlag(ifname, VIR_IFF_MULTICAST, receive);
 }
 
 /**
@@ -725,10 +740,11 @@ int virNetDevSetRcvMulti(const char *ifname,
  *
  * Returns 0 in case of success or -1 on error.
  */
-int virNetDevSetRcvAllMulti(const char *ifname,
+int
+virNetDevSetRcvAllMulti(const char *ifname,
                         bool receive)
 {
-    return virNetDevSetIFFlag(ifname, IFF_ALLMULTI, receive);
+    return virNetDevSetIFFlag(ifname, VIR_IFF_ALLMULTI, receive);
 }
 
 
@@ -780,10 +796,11 @@ virNetDevGetIFFlag(const char *ifname,
  *
  * Returns 0 in case of success or an errno code in case of failure.
  */
-int virNetDevGetOnline(const char *ifname,
+int
+virNetDevGetOnline(const char *ifname,
                    bool *online)
 {
-    return virNetDevGetIFFlag(ifname, IFF_UP, online);
+    return virNetDevGetIFFlag(ifname, VIR_IFF_UP, online);
 }
 
 /**
@@ -796,10 +813,11 @@ int virNetDevGetOnline(const char *ifname,
  *
  * Returns 0 in case of success or an errno code in case of failure.
  */
-int virNetDevGetPromiscuous(const char *ifname,
+int
+virNetDevGetPromiscuous(const char *ifname,
                         bool *promiscuous)
 {
-    return virNetDevGetIFFlag(ifname, IFF_PROMISC, promiscuous);
+    return virNetDevGetIFFlag(ifname, VIR_IFF_PROMISC, promiscuous);
 }
 
 /**
@@ -812,10 +830,11 @@ int virNetDevGetPromiscuous(const char *ifname,
  *
  * Returns 0 in case of success or -1 on error.
  */
-int virNetDevGetRcvMulti(const char *ifname,
+int
+virNetDevGetRcvMulti(const char *ifname,
                      bool *receive)
 {
-    return virNetDevGetIFFlag(ifname, IFF_MULTICAST, receive);
+    return virNetDevGetIFFlag(ifname, VIR_IFF_MULTICAST, receive);
 }
 
 /**
@@ -828,10 +847,11 @@ int virNetDevGetRcvMulti(const char *ifname,
  *
  * Returns 0 in case of success or -1 on error.
  */
-int virNetDevGetRcvAllMulti(const char *ifname,
+int
+virNetDevGetRcvAllMulti(const char *ifname,
                         bool *receive)
 {
-    return virNetDevGetIFFlag(ifname, IFF_ALLMULTI, receive);
+    return virNetDevGetIFFlag(ifname, VIR_IFF_ALLMULTI, receive);
 }
 
 
@@ -2668,7 +2688,7 @@ int virNetDevGetRxFilter(const char *ifname,
                          virNetDevRxFilterPtr *filter)
 {
     int ret = -1;
-    bool receive;
+    bool receive = false;
     virNetDevRxFilterPtr fil = virNetDevRxFilterNew();
 
     if (!fil)

src/util/virnetdev.h

@@ -201,17 +201,17 @@ int virNetDevDelMulti(const char *ifname,
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
 
 int virNetDevSetPromiscuous(const char *ifname, bool promiscuous)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
 int virNetDevGetPromiscuous(const char *ifname, bool *promiscuous)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
 
 int virNetDevSetRcvMulti(const char *ifname, bool receive)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
 int virNetDevGetRcvMulti(const char *ifname, bool *receive)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
 
 int virNetDevSetRcvAllMulti(const char *ifname, bool receive)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
 int virNetDevGetRcvAllMulti(const char *ifname, bool *receive)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
 #endif /* __VIR_NETDEV_H__ */