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-rw-r--r--lib/libc/sys/clock_gettime.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/lib/libc/sys/clock_gettime.c b/lib/libc/sys/clock_gettime.c
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+++ b/lib/libc/sys/clock_gettime.c
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+/*-
+ * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/vdso.h>
+#include <errno.h>
+#include <time.h>
+#include "libc_private.h"
+
+int __clock_gettime(clockid_t, struct timespec *ts);
+
+__weak_reference(__clock_gettime, clock_gettime);
+
+int
+__clock_gettime(clockid_t clock_id, struct timespec *ts)
+{
+ int error;
+
+ if (__vdso_clock_gettime != NULL && __vdso_gettc != NULL)
+ error = __vdso_clock_gettime(clock_id, ts);
+ else
+ error = ENOSYS;
+ if (error == ENOSYS)
+ error = __sys_clock_gettime(clock_id, ts);
+ return (error);
+}
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