1 files changed, 92 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_rwlockattr.c b/lib/libthr/thread/thr_rwlockattr.c
new file mode 100644
index 000000000000..34bbbb20e611
--- /dev/null
+++ b/lib/libthr/thread/thr_rwlockattr.c
@@ -0,0 +1,92 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 1998 Alex Nash
+ * All rights reserved.
+ *
+ * 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 "namespace.h"
+#include <errno.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include "un-namespace.h"
+
+#include "thr_private.h"
+
+__weak_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
+__weak_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared);
+__weak_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init);
+__weak_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared);
+
+int
+_pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr)
+{
+	pthread_rwlockattr_t prwlockattr;
+
+	if (rwlockattr == NULL)
+		return (EINVAL);
+	prwlockattr = *rwlockattr;
+	if (prwlockattr == NULL)
+		return (EINVAL);
+	free(prwlockattr);
+	return (0);
+}
+
+int
+_pthread_rwlockattr_getpshared(
+    const pthread_rwlockattr_t * __restrict rwlockattr,
+    int * __restrict pshared)
+{
+
+	*pshared = (*rwlockattr)->pshared;
+	return (0);
+}
+
+int
+_pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr)
+{
+	pthread_rwlockattr_t prwlockattr;
+
+	if (rwlockattr == NULL)
+		return (EINVAL);
+
+	prwlockattr = malloc(sizeof(struct pthread_rwlockattr));
+	if (prwlockattr == NULL)
+		return (ENOMEM);
+
+	prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE;
+	*rwlockattr = prwlockattr;
+	return (0);
+}
+
+int
+_pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared)
+{
+
+	if (pshared != PTHREAD_PROCESS_PRIVATE &&
+	    pshared != PTHREAD_PROCESS_SHARED)
+		return (EINVAL);
+	(*rwlockattr)->pshared = pshared;
+	return (0);
+}