1 files changed, 70 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/truncate64.c b/sysdeps/unix/sysv/linux/truncate64.c
new file mode 100644
index 0000000000..0a20547789
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/truncate64.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1997, 1998, 1999 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/types.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+
+#include "kernel-features.h"
+
+#ifdef __NR_truncate64
+static int have_no_truncate64;
+
+extern int __syscall_truncate64 (int fd, int high_length, int low_length);
+
+
+/* Truncate the file FD refers to to LENGTH bytes.  */
+int
+truncate64 (path, length)
+     const char *path;
+     off64_t length;
+{
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+  if (! have_no_truncate64)
+#endif
+    {
+      int result = INLINE_SYSCALL (truncate64, 3, path, length >> 32,
+				   length & 0xffffffff);
+
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+      if (result != -1 || errno != ENOSYS)
+#endif
+	return result;
+
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+      have_no_truncate64 = 1;
+#endif
+    }
+
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+  if ((off_t) length != length)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+  return truncate (path, (off_t) length);
+#endif
+}
+
+#else
+/* Use the generic implementation.  */
+# include <sysdeps/generic/truncate64.c>
+#endif