1 files changed, 97 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/linuxthreads/lockfile.c b/newlib/libc/sys/linux/linuxthreads/lockfile.c
new file mode 100644
index 000000000..0aeb15086
--- /dev/null
+++ b/newlib/libc/sys/linux/linuxthreads/lockfile.c
@@ -0,0 +1,97 @@
+/* lockfile - Handle locking and unlocking of stream.
+   Copyright (C) 1996, 1998, 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sys/lock.h>
+#include <stdio.h>
+#include <pthread.h>
+#include "internals.h"
+
+#ifdef USE_IN_LIBIO
+#include "../libio/libioP.h"
+#endif
+
+#ifndef SHARED
+/* We need a hook to force this file to be linked in when static
+   libpthread is used.  */
+const int __pthread_provide_lockfile = 0;
+#endif
+
+void
+__flockfile (FILE *stream)
+{
+  __lock_acquire_recursive (*(_LOCK_RECURSIVE_T *)&stream->_lock);
+}
+#undef _IO_flockfile
+strong_alias (__flockfile, _IO_flockfile)
+weak_alias (__flockfile, flockfile);
+
+
+void
+__funlockfile (FILE *stream)
+{
+  __lock_release_recursive (*(_LOCK_RECURSIVE_T *)&stream->_lock);
+}
+#undef _IO_funlockfile
+strong_alias (__funlockfile, _IO_funlockfile)
+weak_alias (__funlockfile, funlockfile);
+
+
+int
+__ftrylockfile (FILE *stream)
+{
+  return __lock_try_acquire_recursive (*(_LOCK_RECURSIVE_T *)&stream->_lock);
+}
+strong_alias (__ftrylockfile, _IO_ftrylockfile)
+weak_alias (__ftrylockfile, ftrylockfile);
+
+void
+__flockfilelist(void)
+{
+#ifdef USE_IN_LIBIO
+  _IO_list_lock();
+#endif
+}
+
+void
+__funlockfilelist(void)
+{
+#ifdef USE_IN_LIBIO
+  _IO_list_unlock();
+#endif
+}
+
+void
+__fresetlockfiles (void)
+{
+#ifdef USE_IN_LIBIO
+  _IO_ITER i;
+
+  pthread_mutexattr_t attr;
+
+  __pthread_mutexattr_init (&attr);
+  __pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE_NP);
+
+  for (i = _IO_iter_begin(); i != _IO_iter_end(); i = _IO_iter_next(i))
+    __pthread_mutex_init (_IO_iter_file(i)->_lock, &attr);
+
+  __pthread_mutexattr_destroy (&attr);
+
+  _IO_list_resetlock();
+#endif
+}