diff --git a/libc/bionic/pthread_attr.cpp b/libc/bionic/pthread_attr.cpp
new file mode 100644
index 0000000..831a28e
--- /dev/null
+++ b/libc/bionic/pthread_attr.cpp
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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 <pthread.h>
+
+#include "pthread_internal.h"
+
+#define DEFAULT_STACKSIZE (1024 * 1024)
+
+const pthread_attr_t gDefaultPthreadAttr = {
+  .flags = 0,
+  .stack_base = NULL,
+  .stack_size = DEFAULT_STACKSIZE,
+  .guard_size = PAGE_SIZE,
+  .sched_policy = SCHED_NORMAL,
+  .sched_priority = 0
+};
+
+int pthread_attr_init(pthread_attr_t* attr) {
+  *attr = gDefaultPthreadAttr;
+  return 0;
+}
+
+int pthread_attr_destroy(pthread_attr_t* attr) {
+  memset(attr, 0x42, sizeof(pthread_attr_t));
+  return 0;
+}
+
+int pthread_attr_setdetachstate(pthread_attr_t* attr, int state) {
+  if (state == PTHREAD_CREATE_DETACHED) {
+    attr->flags |= PTHREAD_ATTR_FLAG_DETACHED;
+  } else if (state == PTHREAD_CREATE_JOINABLE) {
+    attr->flags &= ~PTHREAD_ATTR_FLAG_DETACHED;
+  } else {
+    return EINVAL;
+  }
+  return 0;
+}
+
+int pthread_attr_getdetachstate(pthread_attr_t const* attr, int* state) {
+  *state = (attr->flags & PTHREAD_ATTR_FLAG_DETACHED) ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE;
+  return 0;
+}
+
+int pthread_attr_setschedpolicy(pthread_attr_t* attr, int policy) {
+  attr->sched_policy = policy;
+  return 0;
+}
+
+int pthread_attr_getschedpolicy(pthread_attr_t const* attr, int* policy) {
+  *policy = attr->sched_policy;
+  return 0;
+}
+
+int pthread_attr_setschedparam(pthread_attr_t * attr, struct sched_param const* param) {
+  attr->sched_priority = param->sched_priority;
+  return 0;
+}
+
+int pthread_attr_getschedparam(pthread_attr_t const* attr, struct sched_param* param) {
+  param->sched_priority = attr->sched_priority;
+  return 0;
+}
+
+int pthread_attr_setstacksize(pthread_attr_t* attr, size_t stack_size) {
+  if ((stack_size & (PAGE_SIZE - 1) || stack_size < PTHREAD_STACK_MIN)) {
+    return EINVAL;
+  }
+  attr->stack_size = stack_size;
+  return 0;
+}
+
+int pthread_attr_getstacksize(pthread_attr_t const* attr, size_t* stack_size) {
+  *stack_size = attr->stack_size;
+  return 0;
+}
+
+int pthread_attr_setstackaddr(pthread_attr_t*, void*) {
+  // This was removed from POSIX.1-2008, and is not implemented on bionic.
+  // Needed for ABI compatibility with the NDK.
+  return ENOSYS;
+}
+
+int pthread_attr_getstackaddr(pthread_attr_t const* attr, void** stack_addr) {
+  // This was removed from POSIX.1-2008.
+  // Needed for ABI compatibility with the NDK.
+  *stack_addr = (char*)attr->stack_base + attr->stack_size;
+  return 0;
+}
+
+int pthread_attr_setstack(pthread_attr_t* attr, void* stack_base, size_t stack_size) {
+  if ((stack_size & (PAGE_SIZE - 1) || stack_size < PTHREAD_STACK_MIN)) {
+    return EINVAL;
+  }
+  if ((uint32_t)stack_base & (PAGE_SIZE - 1)) {
+    return EINVAL;
+  }
+  attr->stack_base = stack_base;
+  attr->stack_size = stack_size;
+  return 0;
+}
+
+int pthread_attr_getstack(pthread_attr_t const* attr, void** stack_base, size_t* stack_size) {
+  *stack_base = attr->stack_base;
+  *stack_size = attr->stack_size;
+  return 0;
+}
+
+int pthread_attr_setguardsize(pthread_attr_t* attr, size_t guard_size) {
+  if (guard_size & (PAGE_SIZE - 1) || guard_size < PAGE_SIZE) {
+    return EINVAL;
+  }
+  attr->guard_size = guard_size;
+  return 0;
+}
+
+int pthread_attr_getguardsize(pthread_attr_t const* attr, size_t* guard_size) {
+  *guard_size = attr->guard_size;
+  return 0;
+}
+
+int pthread_getattr_np(pthread_t thid, pthread_attr_t* attr) {
+  pthread_internal_t* thread = (pthread_internal_t*) thid;
+  *attr = thread->attr;
+  return 0;
+}
+
+int pthread_attr_setscope(pthread_attr_t* , int scope) {
+  if (scope == PTHREAD_SCOPE_SYSTEM) {
+    return 0;
+  }
+  if (scope == PTHREAD_SCOPE_PROCESS) {
+    return ENOTSUP;
+  }
+  return EINVAL;
+}
+
+int pthread_attr_getscope(pthread_attr_t const*) {
+  return PTHREAD_SCOPE_SYSTEM;
+}