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From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
To: linux-kernel@vger.kernel.org
Cc: "Joel Fernandes (Google)" <joel@joelfernandes.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	ast@kernel.org, atishp04@gmail.com, dancol@google.com,
	Dan Williams <dan.j.williams@intel.com>,
	gregkh@linuxfoundation.org, Jonathan Corbet <corbet@lwn.net>,
	karim.yaghmour@opersys.com, Kees Cook <keescook@chromium.org>,
	kernel-team@android.com, linux-doc@vger.kernel.org,
	linux-kselftest@vger.kernel.org,
	Manoj Rao <linux@manojrajarao.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	paulmck@linux.vnet.ibm.com,
	"Peter Zijlstra (Intel)" <peterz@infradead.org>,
	rdunlap@infradead.org, rostedt@goodmis.org,
	Shuah Khan <shuah@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	yhs@fb.com
Subject: [PATCH v2 2/2] Add selftests for module build using in-kernel headers
Date: Mon, 11 Feb 2019 09:36:00 -0500
Message-ID: <20190211143600.15021-2-joel@joelfernandes.org> (raw)
In-Reply-To: <20190211143600.15021-1-joel@joelfernandes.org>

This test tries to build a module successfully using the in-kernel
headers found in /proc/kheaders.txz.

Verified pass and fail scenarios by running:
make -C tools/testing/selftests TARGETS=kheaders run_tests

Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
 tools/testing/selftests/Makefile              |  1 +
 tools/testing/selftests/kheaders/Makefile     |  5 +++++
 tools/testing/selftests/kheaders/config       |  1 +
 .../kheaders/run_kheaders_modbuild.sh         | 18 +++++++++++++++++
 .../selftests/kheaders/testmod/Makefile       |  3 +++
 .../testing/selftests/kheaders/testmod/test.c | 20 +++++++++++++++++++
 6 files changed, 48 insertions(+)
 create mode 100644 tools/testing/selftests/kheaders/Makefile
 create mode 100644 tools/testing/selftests/kheaders/config
 create mode 100755 tools/testing/selftests/kheaders/run_kheaders_modbuild.sh
 create mode 100644 tools/testing/selftests/kheaders/testmod/Makefile
 create mode 100644 tools/testing/selftests/kheaders/testmod/test.c

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 400ee81a3043..5a9287fddd0d 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -20,6 +20,7 @@ TARGETS += intel_pstate
 TARGETS += ipc
 TARGETS += ir
 TARGETS += kcmp
+TARGETS += kheaders
 TARGETS += kvm
 TARGETS += lib
 TARGETS += membarrier
diff --git a/tools/testing/selftests/kheaders/Makefile b/tools/testing/selftests/kheaders/Makefile
new file mode 100644
index 000000000000..51035ab0732b
--- /dev/null
+++ b/tools/testing/selftests/kheaders/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
+TEST_PROGS := run_kheaders_modbuild.sh
+
+include ../lib.mk
diff --git a/tools/testing/selftests/kheaders/config b/tools/testing/selftests/kheaders/config
new file mode 100644
index 000000000000..5221f9fb5e79
--- /dev/null
+++ b/tools/testing/selftests/kheaders/config
@@ -0,0 +1 @@
+CONFIG_IKHEADERS_PROC=y
diff --git a/tools/testing/selftests/kheaders/run_kheaders_modbuild.sh b/tools/testing/selftests/kheaders/run_kheaders_modbuild.sh
new file mode 100755
index 000000000000..69d6fa237661
--- /dev/null
+++ b/tools/testing/selftests/kheaders/run_kheaders_modbuild.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+HEADERS_XZ=/proc/kheaders.txz
+TMP_DIR_HEADERS=$(mktemp -d)
+TMP_DIR_MODULE=$(mktemp -d)
+SPATH="$(dirname "$(readlink -f "$0")")"
+
+tar -xvf $HEADERS_XZ -C $TMP_DIR_HEADERS > /dev/null
+
+cp -r $SPATH/testmod $TMP_DIR_MODULE/
+
+pushd $TMP_DIR_MODULE/testmod > /dev/null
+make -C $TMP_DIR_HEADERS M=$(pwd) modules
+popd > /dev/null
+
+rm -rf $TMP_DIR_HEADERS
+rm -rf $TMP_DIR_MODULE
diff --git a/tools/testing/selftests/kheaders/testmod/Makefile b/tools/testing/selftests/kheaders/testmod/Makefile
new file mode 100644
index 000000000000..7083e28706e8
--- /dev/null
+++ b/tools/testing/selftests/kheaders/testmod/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-m += test.o
diff --git a/tools/testing/selftests/kheaders/testmod/test.c b/tools/testing/selftests/kheaders/testmod/test.c
new file mode 100644
index 000000000000..9178bf6f0cc8
--- /dev/null
+++ b/tools/testing/selftests/kheaders/testmod/test.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+static int __init hello_init(void)
+{
+	printk(KERN_INFO "Hello, world\n");
+	return 0;
+}
+
+static void __exit hello_exit(void)
+{
+	printk(KERN_INFO "Goodbye, world\n");
+}
+
+module_init(hello_init);
+module_exit(hello_exit);
+MODULE_LICENSE("GPL");
-- 
2.20.1.791.gb4d0f1c61a-goog


  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-11 14:35 [PATCH v2 1/2] Provide in-kernel headers for making it easy to extend the kernel Joel Fernandes (Google)
2019-02-11 14:36 ` Joel Fernandes (Google) [this message]
2019-02-13 22:50 ` Karim Yaghmour
2019-02-15  3:19 ` Alexei Starovoitov
2019-02-15  3:47   ` Joel Fernandes
2019-02-16 19:10     ` Manoj
2019-02-19  4:14   ` Masahiro Yamada
2019-02-19  4:28     ` Alexei Starovoitov
2019-02-19  4:34     ` Joel Fernandes
2019-02-19  4:42     ` Masahiro Yamada
2019-02-19  5:12       ` Joel Fernandes
2019-02-19 15:16       ` Joel Fernandes
2019-02-21 14:34         ` Masahiro Yamada
2019-02-21 15:29           ` Joel Fernandes
2019-03-25 13:49   ` Joel Fernandes
2019-03-27 17:31     ` Joel Fernandes
2019-04-03  7:48       ` Masahiro Yamada
2019-04-03 17:20         ` Joel Fernandes
2019-04-03 17:46           ` Daniel Colascione
2019-04-03 17:56             ` Joel Fernandes
2019-04-04  3:54               ` Masahiro Yamada

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