about summary refs log tree commit diff
path: root/linuxthreads/sysdeps/pthread/herrno-loc.c
diff options
context:
space:
mode:
Diffstat (limited to 'linuxthreads/sysdeps/pthread/herrno-loc.c')
-rw-r--r--linuxthreads/sysdeps/pthread/herrno-loc.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/pthread/herrno-loc.c b/linuxthreads/sysdeps/pthread/herrno-loc.c
new file mode 100644
index 0000000000..ead9a16065
--- /dev/null
+++ b/linuxthreads/sysdeps/pthread/herrno-loc.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 1996, 97, 98, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <netdb.h>
+#include <tls.h>
+#include <sysdep-cancel.h>
+
+#if ! USE___THREAD
+# undef h_errno
+extern int h_errno;
+#endif
+
+/* When threaded, h_errno may be a per-thread variable.  */
+int *
+weak_const_function
+__h_errno_location (void)
+{
+#if ! USE___THREAD
+  if (! SINGLE_THREAD_P)
+    {
+      pthread_descr self = thread_self();
+      return LIBC_THREAD_GETMEM (self, p_h_errnop);
+    }
+#endif
+  return &h_errno;
+}