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Index: qemu/block-raw.c
@@ -164,9 +164,20 @@
static int aio_sig_num = SIGUSR2;
static RawAIOCB *first_aio; /* AIO issued */
static int aio_initialized = 0;
+// FreeBSD 4.x doesn't have sigwait
+#if defined(__FreeBSD__) && __FreeBSD__ <= 4
+static int sigaio_dont = 0;
+#endif
static void aio_signal_handler(int signum)
{
+// FreeBSD 4.x doesn't have sigwait
+#if defined(__FreeBSD__) && __FreeBSD__ <= 4
+ if (sigaio_dont) {
+ --sigaio_dont;
+ return;
+ }
+#endif
#ifndef QEMU_TOOL
CPUState *env = cpu_single_env;
if (env) {
@@ -281,9 +292,17 @@
if (qemu_bh_poll())
return;
#endif
+// FreeBSD 4.x doesn't have sigwait
+#if defined(__FreeBSD__) && __FreeBSD__ <= 4
+ ++sigaio_dont;
+ do
+ sigsuspend(&wait_oset);
+ while (sigaio_dont);
+#else
sigemptyset(&set);
sigaddset(&set, aio_sig_num);
sigwait(&set, &nb_sigs);
+#endif
qemu_aio_poll();
}
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