10977 Windows 10 SMB client exhausts smbauth sockets

Reviewed by: Matt Barden <matt.barden@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Approved by: Dan McDonald <danmcd@joyent.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/usr/src/lib/libfakekernel/common/callout.c b/usr/src/lib/libfakekernel/common/callout.c
new file mode 100644
index 0000000000..24bb41cdff
--- /dev/null
+++ b/usr/src/lib/libfakekernel/common/callout.c
@@ -0,0 +1,96 @@
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source.  A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
+ */
+
+/*
+ * Implement timeout(9f), untimeout(9f) on top of
+ * libc timer_create, timer_settime, etc.
+ */
+
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <time.h>
+
+typedef void (*sigev_notify_func_t)(union sigval);
+
+/*
+ * We never actually reference anything in this array, using it
+ * just as a collection of addresses mapped from/to int values.
+ * It would be fine to take addresses even beyond the end, but
+ * to avoid confusion it's sized larger than _TIMER_MAX (32).
+ */
+static char timeout_base[100];
+
+timeout_id_t
+timeout(void (*func)(void *), void *arg, clock_t delta)
+{
+	struct sigevent sev;
+	struct itimerspec its;
+	timer_t tid;
+	int err;
+
+	if (delta <= 0)
+		return (NULL);
+
+	bzero(&sev, sizeof (sev));
+	sev.sigev_notify = SIGEV_THREAD;
+	sev.sigev_value.sival_ptr = arg;
+	sev.sigev_notify_function = (sigev_notify_func_t)func;
+	err = timer_create(CLOCK_REALTIME, &sev, &tid);
+	if (err != 0)
+		return (NULL);
+
+	bzero(&its, sizeof (its));
+	TICK_TO_TIMESTRUC(delta, &its.it_value);
+	err = timer_settime(tid, 0, &its, NULL);
+	if (err != 0) {
+		(void) timer_delete(tid);
+		return (NULL);
+	}
+
+	/* Convert return to a (sort of) pointer */
+	return (timeout_base + tid);
+}
+
+clock_t
+untimeout(timeout_id_t id_arg)
+{
+	struct itimerspec its;
+	char *id_cp = id_arg;
+	clock_t delta;
+	timer_t tid;
+	int rc;
+
+	if (id_arg == NULL)
+		return (-1);
+
+	/* Convert id_arg back to small integer. */
+	tid = (int)(id_cp - timeout_base);
+
+	bzero(&its, sizeof (its));
+	rc = timer_settime(tid, 0, &its, &its);
+	if (rc != 0) {
+		delta = 0;
+	} else {
+		delta = TIMESTRUC_TO_TICK(&its.it_value);
+		if (delta < 0)
+			delta = 0;
+	}
+
+	rc = timer_delete(tid);
+	if (rc != 0)
+		delta = -1;
+
+	return (delta);
+}