nbd/server: Advertise actual minimum block size

[mirror_qemu.git] / qemu-bridge-helper.c

diff --git a/qemu-bridge-helper.c b/qemu-bridge-helper.c
index 287bfd5e38c11f6ccef868efd71b7d0c64ecc220..5396fbfbb6ca5d4415bd3165dc68bb4f5004a7a0 100644 (file)
--- a/qemu-bridge-helper.c
+++ b/qemu-bridge-helper.c
@@ -13,19 +13,9 @@
  *
  */
 
-#include "config-host.h"
-
-#include <stdio.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <ctype.h>
-#include <glib.h>
-
-#include <sys/types.h>
+#include "qemu/osdep.h"
+
+
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -229,7 +219,7 @@ int main(int argc, char **argv)
     unsigned long ifargs[4];
 #endif
     int ifindex;
-    int fd, ctlfd, unixfd = -1;
+    int fd = -1, ctlfd = -1, unixfd = -1;
     int use_vnet = 0;
     int mtu;
     const char *bridge = NULL;
@@ -367,6 +357,24 @@ int main(int argc, char **argv)
         goto cleanup;
     }
 
+    /* Linux uses the lowest enslaved MAC address as the MAC address of
+     * the bridge.  Set MAC address to a high value so that it doesn't
+     * affect the MAC address of the bridge.
+     */
+    if (ioctl(ctlfd, SIOCGIFHWADDR, &ifr) < 0) {
+        fprintf(stderr, "failed to get MAC address of device `%s': %s\n",
+                iface, strerror(errno));
+        ret = EXIT_FAILURE;
+        goto cleanup;
+    }
+    ifr.ifr_hwaddr.sa_data[0] = 0xFE;
+    if (ioctl(ctlfd, SIOCSIFHWADDR, &ifr) < 0) {
+        fprintf(stderr, "failed to set MAC address of device `%s': %s\n",
+                iface, strerror(errno));
+        ret = EXIT_FAILURE;
+        goto cleanup;
+    }
+
     /* add the interface to the bridge */
     prep_ifreq(&ifr, bridge);
     ifindex = if_nametoindex(iface);
@@ -418,7 +426,12 @@ int main(int argc, char **argv)
     /* profit! */
 
 cleanup:
-
+    if (fd >= 0) {
+        close(fd);
+    }
+    if (ctlfd >= 0) {
+        close(ctlfd);
+    }
     while ((acl_rule = QSIMPLEQ_FIRST(&acl_list)) != NULL) {
         QSIMPLEQ_REMOVE_HEAD(&acl_list, entry);
         g_free(acl_rule);