1 files changed, 81 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/timerfd.h b/usr/src/uts/common/sys/timerfd.h
new file mode 100644
index 0000000000..66cb50ac88
--- /dev/null
+++ b/usr/src/uts/common/sys/timerfd.h
@@ -0,0 +1,81 @@
+/*
+ * 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 (c) 2015 Joyent, Inc.  All rights reserved.
+ */
+
+/*
+ * Header file to support for the timerfd facility.
+ */
+
+#ifndef _SYS_TIMERFD_H
+#define	_SYS_TIMERFD_H
+
+#include <sys/types.h>
+#include <sys/time_impl.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * To assure binary compatibility with Linux, these values are fixed at their
+ * Linux equivalents, not their native ones.
+ */
+#define	TFD_CLOEXEC		02000000		/* LX_O_CLOEXEC */
+#define	TFD_NONBLOCK		04000			/* LX_O_NONBLOCK */
+#define	TFD_TIMER_ABSTIME	(1 << 0)
+#define	TFD_TIMER_CANCEL_ON_SET	(1 << 1)
+
+/*
+ * These ioctl values are specific to the native implementation; applications
+ * shouldn't be using them directly, and they should therefore be safe to
+ * change without breaking apps.
+ */
+#define	TIMERFDIOC		(('t' << 24) | ('f' << 16) | ('d' << 8))
+#define	TIMERFDIOC_CREATE	(TIMERFDIOC | 1)	/* create timer */
+#define	TIMERFDIOC_SETTIME	(TIMERFDIOC | 2)	/* timerfd_settime() */
+#define	TIMERFDIOC_GETTIME	(TIMERFDIOC | 3)	/* timerfd_gettime() */
+
+typedef struct timerfd_settime {
+	uint64_t tfd_settime_flags;	/* flags (e.g., TFD_TIMER_ABSTIME) */
+	uint64_t tfd_settime_value;	/* pointer to value */
+	uint64_t tfd_settime_ovalue;	/* pointer to old value, if any */
+} timerfd_settime_t;
+
+#ifndef _KERNEL
+
+extern int timerfd_create(int, int);
+extern int timerfd_settime(int, int,
+    const struct itimerspec *, struct itimerspec *);
+extern int timerfd_gettime(int, struct itimerspec *);
+
+#else
+
+#define	TIMERFDMNRN_TIMERFD	0
+#define	TIMERFDMNRN_CLONE	1
+#define	TIMERFD_VALMAX		(ULLONG_MAX - 1ULL)
+
+/*
+ * Fortunately, the values for the Linux clocks that are valid for timerfd
+ * (namely, CLOCK_REALTIME and CLOCK_MONOTONIC) don't overlap with our values
+ * the same.
+ */
+#define	TIMERFD_MONOTONIC	1	/* Linux value for CLOCK_MONOTONIC */
+
+#endif /* _KERNEL */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _SYS_TIMERFD_H */