1 files changed, 51 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/ptrace.c b/libc/sysdeps/linux/common/ptrace.c
new file mode 100644
index 000000000..bc4debdac
--- /dev/null
+++ b/libc/sysdeps/linux/common/ptrace.c
@@ -0,0 +1,51 @@
+/* Copyright (C) 1995, 1996, 1997, 1998 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 <errno.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <stdarg.h>
+
+
+extern long int __ptrace (enum __ptrace_request, pid_t, void *, void *);
+
+long int
+ptrace (enum __ptrace_request request, ...)
+{
+  long int res, ret;
+  va_list ap;
+  pid_t pid;
+  void *addr, *data;
+
+  va_start (ap, request);
+  pid = va_arg (ap, pid_t);
+  addr = va_arg (ap, void *);
+  data = va_arg (ap, void *);
+  va_end (ap);
+
+  if (request > 0 && request < 4)
+    data = &ret;
+
+  res = __ptrace(request, pid, addr, data);
+  if (res >= 0 && request > 0 && request < 4) {
+      __set_errno(0);
+      return ret;
+    }
+
+  return res;
+}