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[Minios-devel] [UNIKRAFT/PYTHON3 v4 10/14] Add init.c for initialization



From: Vlad-Andrei Badoiu <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>

This patch sets the environment variables that are needed during runtime for
the intepreter.

Signed-off-by: Vlad-Andrei Badoiu <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>
Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
Reviewed-by: Felipe Huici <felipe.huici@xxxxxxxxx>
---
 Config.uk   | 13 +++++++++++++
 Makefile.uk |  1 +
 init.c      | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+)
 create mode 100644 init.c

diff --git a/Config.uk b/Config.uk
index b6dab40..530efbe 100644
--- a/Config.uk
+++ b/Config.uk
@@ -19,4 +19,17 @@ menuconfig LIBPYTHON3
        select LWIP_IPV6
 
 if LIBPYTHON3
+
+config LIBPYTHON3_PYTHONHOME
+       string "Python home directory"
+       default "/lib/python3.7"
+
+config LIBPYTHON3_PYTHONPATH
+       string "Python path"
+       default "/lib/python3.7"
+
+config LIBPYTHON3_TMPDIR
+       string "Temp directory location"
+       default "/tmp"
+
 endif
diff --git a/Makefile.uk b/Makefile.uk
index 2819d5d..1e21d91 100644
--- a/Makefile.uk
+++ b/Makefile.uk
@@ -97,6 +97,7 @@ LIBPYTHON3_COMMON_CXXFLAGS-y += $(LIBPYTHON3_COMMON_DEFINES-y)
 LIBPYTHON3_CINCLUDES-y   += $(LIBPYTHON3_COMMON_INCLUDES-y)
 LIBPYTHON3_CXXINCLUDES-y += $(LIBPYTHON3_COMMON_INCLUDES-y)
 
+LIBPYTHON3_SRCS-y += $(LIBPYTHON3_BASE)/init.c|unikraft
 LIBPYTHON3_SRCS-y += $(LIBPYTHON3_BASE)/modules_config.c|unikraft
 LIBPYTHON3_SRCS-y += $(LIBPYTHON3_BASE)/stubs.c|unikraft
 
diff --git a/init.c b/init.c
new file mode 100644
index 0000000..bc06279
--- /dev/null
+++ b/init.c
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Badoiu Vlad-Andrei <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>
+ *
+ * Copyright (c) 2019, University Politehnica of Bucharest. All rights 
reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+#include <uk/config.h>
+#include <uk/essentials.h>
+#include <stdlib.h>
+
+void __constructor python_init(void)
+{
+       setenv("PYTHONHOME", CONFIG_LIBPYTHON3_PYTHONHOME, 0);
+       setenv("PYTHONPATH", CONFIG_LIBPYTHON3_PYTHONPATH, 0);
+       setenv("PYTHONUSERBASE", "site-packages", 0);
+       setenv("TMPDIR", CONFIG_LIBPYTHON3_TMPDIR, 0);
+       setenv("_PYTHON_SYSCONFIGDATA_NAME", "_sysconfigdata", 0);
+}
-- 
2.20.1


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