1 files changed, 37 insertions, 0 deletions
diff --git a/emulators/qemu/files/patch-bg b/emulators/qemu/files/patch-bg
new file mode 100644
index 000000000000..26d0bf2833bc
--- /dev/null
+++ b/emulators/qemu/files/patch-bg
@@ -0,0 +1,37 @@
+Index: qemu/qemu-mkcow.c
+@@ -21,6 +21,8 @@
+  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  * THE SOFTWARE.
+  */
++#include "config-host.h"
++ 
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <stdarg.h>
+@@ -36,6 +38,12 @@
+ #include <sys/stat.h>
+ #include <netinet/in.h>
+ 
++#ifdef _BSD
++#include <sys/types.h>
++#include <sys/ioctl.h>
++#include <sys/disk.h>
++#endif
++
+ #include "cow.h"
+ 
+ #include "bswap.h"
+@@ -56,6 +64,13 @@ int cow_create(int cow_fd, const char *i
+             perror(image_filename);
+             exit(1);
+         }
++#ifdef _BSD
++        struct stat sb;
++        if (!fstat(fd,&sb) && (S_IFCHR & sb.st_mode)) {
++            if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&image_sectors))
++                image_sectors = lseek(fd, 0LL, SEEK_END);
++        } else
++#endif                      
+         image_sectors = lseek64(fd, 0, SEEK_END);
+         if (fstat(fd, &st) != 0) {
+             close(fd);