tests/avocado: Add bFLT loader linux-user test

Add a very quick test that runs a busybox binary in bFLT format:

  $ AVOCADO_ALLOW_UNTRUSTED_CODE=1 \
    avocado --show=app run -t linux_user tests/avocado/load_bflt.py
  JOB ID     : db94d5960ce564c50904d666a7e259148c27e88f
  JOB LOG    : ~/avocado/job-results/job-2019-06-25T10.52-db94d59/job.log
   (1/1) tests/avocado/load_bflt.py:LoadBFLT.test_stm32: PASS (0.15 s)
  RESULTS    : PASS 1 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 0
  JOB TIME   : 0.54 s

Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211105143416.148332-6-f4bug@amsat.org>

1 files changed, 54 insertions, 0 deletions

diff --git a/tests/avocado/load_bflt.py b/tests/avocado/load_bflt.py
new file mode 100644
index 0000000..bb50cec
--- /dev/null
+++ b/tests/avocado/load_bflt.py
@@ -0,0 +1,54 @@
+# Test the bFLT loader format
+#
+# Copyright (C) 2019 Philippe Mathieu-Daudé <f4bug@amsat.org>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+import os
+import bz2
+import subprocess
+
+from avocado import skipUnless
+from avocado_qemu import QemuUserTest
+from avocado_qemu import has_cmd
+
+
+class LoadBFLT(QemuUserTest):
+
+    def extract_cpio(self, cpio_path):
+        """
+        Extracts a cpio archive into the test workdir
+
+        :param cpio_path: path to the cpio archive
+        """
+        cwd = os.getcwd()
+        os.chdir(self.workdir)
+        with bz2.open(cpio_path, 'rb') as archive_cpio:
+            subprocess.run(['cpio', '-i'], input=archive_cpio.read(),
+                           stderr=subprocess.DEVNULL)
+        os.chdir(cwd)
+
+    @skipUnless(*has_cmd('cpio'))
+    @skipUnless(os.getenv('AVOCADO_ALLOW_UNTRUSTED_CODE'), 'untrusted code')
+    def test_stm32(self):
+        """
+        :avocado: tags=arch:arm
+        :avocado: tags=linux_user
+        :avocado: tags=quick
+        """
+        # See https://elinux.org/STM32#User_Space
+        rootfs_url = ('https://elinux.org/images/5/51/'
+                      'Stm32_mini_rootfs.cpio.bz2')
+        rootfs_hash = '9f065e6ba40cce7411ba757f924f30fcc57951e6'
+        rootfs_path_bz2 = self.fetch_asset(rootfs_url, asset_hash=rootfs_hash)
+        busybox_path = os.path.join(self.workdir, "/bin/busybox")
+
+        self.extract_cpio(rootfs_path_bz2)
+
+        res = self.run(busybox_path)
+        ver = 'BusyBox v1.24.0.git (2015-02-03 22:17:13 CET) multi-call binary.'
+        self.assertIn(ver, res.stdout_text)
+
+        res = self.run(busybox_path, ['uname', '-a'])
+        unm = 'armv7l GNU/Linux'
+        self.assertIn(unm, res.stdout_text)