$OpenBSD: patch-osdep_c,v 1.2 2008/04/28 22:52:38 todd Exp $
--- osdep.c.orig	Sun Jan  6 14:38:42 2008
+++ osdep.c	Tue Apr  1 01:36:02 2008
@@ -83,7 +83,14 @@ void qemu_vfree(void *ptr)
 
 #if defined(USE_KQEMU)
 
+#ifdef __OpenBSD__
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/mount.h>
+#else
 #include <sys/vfs.h>
+#endif
+
 #include <sys/mman.h>
 #include <fcntl.h>
 
@@ -91,9 +98,15 @@ static void *kqemu_vmalloc(size_t size)
 {
     static int phys_ram_fd = -1;
     static int phys_ram_size = 0;
+    void *ptr;
+
+#ifdef __OpenBSD__ /* no need (?) for a dummy file on OpenBSD */
+    int map_anon = MAP_ANON;
+#else
+    int map_anon = 0;
     const char *tmpdir;
     char phys_ram_file[1024];
-    void *ptr;
+
 #ifdef HOST_SOLARIS
     struct statvfs stfs;
 #else
@@ -155,11 +168,13 @@ static void *kqemu_vmalloc(size_t size)
         }
         unlink(phys_ram_file);
     }
+#endif /* !__OpenBSD__ */
+
     size = (size + 4095) & ~4095;
     ftruncate(phys_ram_fd, phys_ram_size + size);
     ptr = mmap(NULL,
                size,
-               PROT_WRITE | PROT_READ, MAP_SHARED,
+               PROT_WRITE | PROT_READ, map_anon|MAP_SHARED,
                phys_ram_fd, phys_ram_size);
     if (ptr == MAP_FAILED) {
         fprintf(stderr, "Could not map physical memory\n");