MFlibc_r: add and document pthread_attr_get_np() function.

2 files changed, 58 insertions, 0 deletions

diff --git a/lib/libpthread/thread/Makefile.inc b/lib/libpthread/thread/Makefile.inc
index 974cdb1a..2b7800a 100644
--- a/lib/libpthread/thread/Makefile.inc
+++ b/lib/libpthread/thread/Makefile.inc
@@ -7,6 +7,7 @@ SRCS+= \
 	thr_aio_suspend.c \
 	thr_attr_destroy.c \
 	thr_attr_init.c \
+	thr_attr_get_np.c \
 	thr_attr_getdetachstate.c \
 	thr_attr_getguardsize.c \
 	thr_attr_getinheritsched.c \
diff --git a/lib/libpthread/thread/thr_attr_get_np.c b/lib/libpthread/thread/thr_attr_get_np.c
new file mode 100644
index 0000000..ba6fd19
--- /dev/null
+++ b/lib/libpthread/thread/thr_attr_get_np.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2002,2003 Alexey Zelkin <phantom@FreeBSD.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+#include <errno.h>
+#include <string.h>
+#include <pthread.h>
+#include <pthread_np.h>
+#include "pthread_private.h"
+
+__weak_reference(_pthread_attr_get_np, pthread_attr_get_np);
+
+int
+_pthread_attr_get_np(pthread_t pid, pthread_attr_t *dst)
+{
+	int	ret;
+
+	if (pid == NULL || dst == NULL || *dst == NULL)
+		return (EINVAL);
+
+	if ((ret = _find_thread(pid)) != 0)
+		return (ret);
+
+	memcpy(*dst, &pid->attr, sizeof(struct pthread_attr));
+
+	/*
+	 * Special case, if stack address was not provided by caller
+	 * of pthread_create(), then return address allocated internally
+	 */
+	if ((*dst)->stackaddr_attr == NULL)
+		(*dst)->stackaddr_attr = pid->stack;
+
+	return (0);
+}