Get rid of nptl/sysdeps/ entirely!

nptl/pthread_attr_getaffinity.c

@@ -0,0 +1,74 @@
+/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthreadP.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <shlib-compat.h>
+
+
+int
+__pthread_attr_getaffinity_new (const pthread_attr_t *attr, size_t cpusetsize,
+				cpu_set_t *cpuset)
+{
+  const struct pthread_attr *iattr;
+
+  assert (sizeof (*attr) >= sizeof (struct pthread_attr));
+  iattr = (const struct pthread_attr *) attr;
+
+  if (iattr->cpuset != NULL)
+    {
+      /* Check whether there are any bits set beyond the limits
+	 the user requested.  */
+      for (size_t cnt = cpusetsize; cnt < iattr->cpusetsize; ++cnt)
+	if (((char *) iattr->cpuset)[cnt] != 0)
+	  return EINVAL;
+
+      /* Copy over the cpuset from the thread attribute object.  Limit the copy
+	 to the minimum of the source and destination sizes to prevent a buffer
+	 overrun.  If the destination is larger, fill the remaining space with
+	 zeroes.  */
+      void *p = mempcpy (cpuset, iattr->cpuset,
+			 MIN (iattr->cpusetsize, cpusetsize));
+      if (cpusetsize > iattr->cpusetsize)
+	memset (p, '\0', cpusetsize - iattr->cpusetsize);
+    }
+  else
+    /* We have no information.  */
+    memset (cpuset, -1, cpusetsize);
+
+  return 0;
+}
+versioned_symbol (libpthread, __pthread_attr_getaffinity_new,
+		  pthread_attr_getaffinity_np, GLIBC_2_3_4);
+
+
+#if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4)
+int
+__pthread_attr_getaffinity_old (const pthread_attr_t *attr, cpu_set_t *cpuset)
+{
+  /* The old interface by default assumed a 1024 processor bitmap.  */
+  return __pthread_attr_getaffinity_new (attr, 128, cpuset);
+}
+compat_symbol (libpthread, __pthread_attr_getaffinity_old,
+	       pthread_attr_getaffinity_np, GLIBC_2_3_3);
+#endif