1 files changed, 57 insertions, 0 deletions
diff --git a/REORG.TODO/posix/execl.c b/REORG.TODO/posix/execl.c
new file mode 100644
index 0000000000..4cd0f054e8
--- /dev/null
+++ b/REORG.TODO/posix/execl.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 1991-2017 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <sys/param.h>
+
+/* Execute PATH with all arguments after PATH until
+   a NULL pointer and environment from `environ'.  */
+int
+execl (const char *path, const char *arg, ...)
+{
+  ptrdiff_t argc;
+  va_list ap;
+  va_start (ap, arg);
+  for (argc = 1; va_arg (ap, const char *); argc++)
+    {
+      if (argc == INT_MAX)
+	{
+	  va_end (ap);
+	  errno = E2BIG;
+	  return -1;
+	}
+    }
+  va_end (ap);
+
+  /* Avoid dynamic memory allocation due two main issues:
+     1. The function should be async-signal-safe and a running on a signal
+        handler with a fail outcome might lead to malloc bad state.
+     2. It might be used in a vfork/clone(VFORK) scenario where using
+        malloc also might lead to internal bad state.  */
+  ptrdiff_t i;
+  char *argv[argc + 1];
+  va_start (ap, arg);
+  argv[0] = (char *) arg;
+  for (i = 1; i <= argc; i++)
+    argv[i] = va_arg (ap, char *);
+  va_end (ap);
+
+  return __execve (path, argv, __environ);
+}
+libc_hidden_def (execl)