1 files changed, 94 insertions, 0 deletions
diff --git a/emulators/qemu-devel/files/patch-bt b/emulators/qemu-devel/files/patch-bt
new file mode 100644
index 000000000000..7ebddc06f332
--- /dev/null
+++ b/emulators/qemu-devel/files/patch-bt
@@ -0,0 +1,94 @@
+Index: qemu/vl.c
+@@ -41,6 +41,9 @@
+ #ifdef _BSD
+ #include <sys/stat.h>
+ #include <libutil.h>
++#ifdef __FreeBSD__
++#include <sys/module.h>
++#endif
+ #else
+ #include <linux/if.h>
+ #include <linux/if_tun.h>
+@@ -1022,6 +1025,34 @@
+ 
+ #endif /* CONFIG_SLIRP */
+ 
++#ifdef __FreeBSD__
++#define LOAD_QUIETLY	1
++#define LOAD_VERBOSLY	2
++
++int
++loadmodules(int how, const char *module, ...)
++{
++  int loaded = 0;
++  va_list ap;
++
++  va_start(ap, module);
++#ifndef NO_MODULES
++  while (module != NULL) {
++    if (modfind(module) == -1) {
++      if (kldload(module) == -1) {
++        if (how == LOAD_VERBOSLY)
++          fprintf(stderr, "%s: Cannot load module\n", module);
++      } else
++        loaded++;
++    }
++    module = va_arg(ap, const char *);
++  }
++  va_end(ap);
++#endif
++  return loaded;
++}
++#endif
++
+ #if !defined(_WIN32)
+ #ifdef _BSD
+ static int tun_open(char *ifname, int ifname_size)
+@@ -1030,11 +1061,46 @@
+     char *dev;
+     struct stat s;
+ 
++#ifdef __FreeBSD__
++    int i, kldtried = 0, enoentcount = 0, err = 0;
++    char dname[100];
++    for (i = -1; i < 10; i++) {
++        if (i == -1)
++	    strcpy(dname, "/dev/tap");
++        else
++	    snprintf(dname, sizeof dname, "%s%d",
++		     "/dev/tap", i);
++        fd = open(dname, O_RDWR);
++        if (fd >= 0)
++            break;
++        else if (errno == ENXIO || errno == ENOENT) {
++            if (i == 0 && !kldtried++) {
++                /*
++                 * Attempt to load the tunnel interface KLD if it isn't loaded
++                 * already.
++                 */
++                if (loadmodules(LOAD_VERBOSLY, "if_tap", NULL))
++                    i = -1;
++                continue;
++            }
++            if (errno != ENOENT || ++enoentcount > 3) {
++                err = errno;
++	        break;
++            }
++        } else
++            err = errno;
++    }
++    if (fd < 0) {
++        fprintf(stderr, "warning: could not open %s (%s): no virtual network emulation\n", dname, strerror(err));
++        return -1;
++    }
++#else
+     fd = open("/dev/tap", O_RDWR);
+     if (fd < 0) {
+-        fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
++        fprintf(stderr, "warning: could not open /dev/tap (%s): no virtual network emulation\n", strerror(errno));
+         return -1;
+     }
++#endif
+ 
+     fstat(fd, &s);
+     dev = devname(s.st_rdev, S_IFCHR);