[PULL 3/6] Acceptance test: add "boot_linux" tests

[Cleber Rosa]

This acceptance test, validates that a full blown Linux guest can
successfully boot in QEMU.  In this specific case, the guest chosen is
Fedora version 31.

 * x86_64, pc-i440fx and pc-q35 machine types, with TCG and KVM as
   accelerators

 * aarch64 and virt machine type, with TCG and KVM as accelerators

 * ppc64 and pseries machine type with TCG as accelerator

 * s390x and s390-ccw-virtio machine type with TCG as accelerator

The Avocado vmimage utils library is used to download and cache the
Linux guest images, and from those images a snapshot image is created
and given to QEMU.  If a qemu-img binary is available in the build
directory, it's used to create the snapshot image, so that matching
qemu-system-* and qemu-img are used in the same test run.  If qemu-img
is not available in the build tree, one is attempted to be found
installed system-wide (in the $PATH).  If qemu-img is not found in the
build dir or in the $PATH, the test is canceled.

The method for checking the successful boot is based on "cloudinit"
and its "phone home" feature.  The guest is given an ISO image with
the location of the phone home server, and the information to post
(the instance ID).  Upon receiving the correct information, from the
guest, the test is considered to have PASSed.

This test is currently limited to user mode networking only, and
instructs the guest to connect to the "router" address that is hard
coded in QEMU.

To create the cloudinit ISO image that will be used to configure the
guest, the pycdlib library is also required and has been added as
requirement to the virtual environment created by "check-venv".

The console output is read by a separate thread, by means of the
Avocado datadrainer utility module.

Signed-off-by: Cleber Rosa <address@hidden>
Reviewed-by: Wainer dos Santos Moschetta <address@hidden>
Reviewed-by: Willian Rampazzo <address@hidden>
Tested-by: Willian Rampazzo <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Cleber Rosa <address@hidden>
---
 .travis.yml                    |   2 +-
 tests/acceptance/boot_linux.py | 222 +++++++++++++++++++++++++++++++++
 tests/requirements.txt         |   1 +
 3 files changed, 224 insertions(+), 1 deletion(-)
 create mode 100644 tests/acceptance/boot_linux.py

diff --git a/.travis.yml b/.travis.yml
index b92798ac3b..c460059a7b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -315,7 +315,7 @@ jobs:
     - name: "GCC check-acceptance"
       dist: bionic
       env:
-        - 
CONFIG="--target-list=aarch64-softmmu,alpha-softmmu,arm-softmmu,m68k-softmmu,microblaze-softmmu,mips-softmmu,mips64el-softmmu,nios2-softmmu,or1k-softmmu,ppc-softmmu,ppc64-softmmu,s390x-softmmu,sparc-softmmu,x86_64-softmmu,xtensa-softmmu"
+        - CONFIG="--enable-tools 
--target-list=aarch64-softmmu,alpha-softmmu,arm-softmmu,m68k-softmmu,microblaze-softmmu,mips-softmmu,mips64el-softmmu,nios2-softmmu,or1k-softmmu,ppc-softmmu,ppc64-softmmu,s390x-softmmu,sparc-softmmu,x86_64-softmmu,xtensa-softmmu"
         - TEST_CMD="make check-acceptance"
       after_script:
         - python3 -c 'import json; r = 
json.load(open("tests/results/latest/results.json")); [print(t["logfile"]) for 
t in r["tests"] if t["status"] not in ("PASS", "SKIP")]' | xargs cat
diff --git a/tests/acceptance/boot_linux.py b/tests/acceptance/boot_linux.py
new file mode 100644
index 0000000000..075a386300
--- /dev/null
+++ b/tests/acceptance/boot_linux.py
@@ -0,0 +1,222 @@
+# Functional test that boots a complete Linux system via a cloud image
+#
+# Copyright (c) 2018-2020 Red Hat, Inc.
+#
+# Author:
+#  Cleber Rosa <address@hidden>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later.  See the COPYING file in the top-level directory.
+
+import os
+
+from avocado_qemu import Test, BUILD_DIR
+
+from qemu.accel import kvm_available
+from qemu.accel import tcg_available
+
+from avocado.utils import cloudinit
+from avocado.utils import network
+from avocado.utils import vmimage
+from avocado.utils import datadrainer
+from avocado.utils.path import find_command
+
+ACCEL_NOT_AVAILABLE_FMT = "%s accelerator does not seem to be available"
+KVM_NOT_AVAILABLE = ACCEL_NOT_AVAILABLE_FMT % "KVM"
+TCG_NOT_AVAILABLE = ACCEL_NOT_AVAILABLE_FMT % "TCG"
+
+
+class BootLinux(Test):
+    """
+    Boots a Linux system, checking for a successful initialization
+    """
+
+    timeout = 900
+    chksum = None
+
+    def setUp(self):
+        super(BootLinux, self).setUp()
+        self.vm.add_args('-smp', '2')
+        self.vm.add_args('-m', '1024')
+        self.prepare_boot()
+        self.prepare_cloudinit()
+
+    def prepare_boot(self):
+        self.log.debug('Looking for and selecting a qemu-img binary to be '
+                       'used to create the bootable snapshot image')
+        # If qemu-img has been built, use it, otherwise the system wide one
+        # will be used.  If none is available, the test will cancel.
+        qemu_img = os.path.join(BUILD_DIR, 'qemu-img')
+        if not os.path.exists(qemu_img):
+            qemu_img = find_command('qemu-img', False)
+        if qemu_img is False:
+            self.cancel('Could not find "qemu-img", which is required to '
+                        'create the bootable image')
+        vmimage.QEMU_IMG = qemu_img
+
+        self.log.info('Downloading/preparing boot image')
+        # Fedora 31 only provides ppc64le images
+        image_arch = self.arch
+        if image_arch == 'ppc64':
+            image_arch = 'ppc64le'
+        try:
+            self.boot = vmimage.get(
+                'fedora', arch=image_arch, version='31',
+                checksum=self.chksum,
+                algorithm='sha256',
+                cache_dir=self.cache_dirs[0],
+                snapshot_dir=self.workdir)
+            self.vm.add_args('-drive', 'file=%s' % self.boot.path)
+        except:
+            self.cancel('Failed to download/prepare boot image')
+
+    def prepare_cloudinit(self):
+        self.log.info('Preparing cloudinit image')
+        try:
+            cloudinit_iso = os.path.join(self.workdir, 'cloudinit.iso')
+            self.phone_home_port = network.find_free_port()
+            cloudinit.iso(cloudinit_iso, self.name,
+                          username='root',
+                          password='password',
+                          # QEMU's hard coded usermode router address
+                          phone_home_host='10.0.2.2',
+                          phone_home_port=self.phone_home_port)
+            self.vm.add_args('-drive', 'file=%s,format=raw' % cloudinit_iso)
+        except Exception:
+            self.cancel('Failed to prepared cloudinit image')
+
+    def launch_and_wait(self):
+        self.vm.set_console()
+        self.vm.launch()
+        console_drainer = 
datadrainer.LineLogger(self.vm.console_socket.fileno(),
+                                                 
logger=self.log.getChild('console'))
+        console_drainer.start()
+        self.log.info('VM launched, waiting for boot confirmation from guest')
+        cloudinit.wait_for_phone_home(('0.0.0.0', self.phone_home_port), 
self.name)
+
+
+class BootLinuxX8664(BootLinux):
+    """
+    :avocado: tags=arch:x86_64
+    """
+
+    chksum = 'e3c1b309d9203604922d6e255c2c5d098a309c2d46215d8fc026954f3c5c27a0'
+
+    def test_pc_i440fx_tcg(self):
+        """
+        :avocado: tags=machine:pc
+        :avocado: tags=accel:tcg
+        """
+        if not tcg_available(self.qemu_bin):
+            self.cancel(TCG_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "tcg")
+        self.launch_and_wait()
+
+    def test_pc_i440fx_kvm(self):
+        """
+        :avocado: tags=machine:pc
+        :avocado: tags=accel:kvm
+        """
+        if not kvm_available(self.arch, self.qemu_bin):
+            self.cancel(KVM_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "kvm")
+        self.launch_and_wait()
+
+    def test_pc_q35_tcg(self):
+        """
+        :avocado: tags=machine:q35
+        :avocado: tags=accel:tcg
+        """
+        if not tcg_available(self.qemu_bin):
+            self.cancel(TCG_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "tcg")
+        self.launch_and_wait()
+
+    def test_pc_q35_kvm(self):
+        """
+        :avocado: tags=machine:q35
+        :avocado: tags=accel:kvm
+        """
+        if not kvm_available(self.arch, self.qemu_bin):
+            self.cancel(KVM_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "kvm")
+        self.launch_and_wait()
+
+
+class BootLinuxAarch64(BootLinux):
+    """
+    :avocado: tags=arch:aarch64
+    :avocado: tags=machine:virt
+    :avocado: tags=machine:gic-version=2
+    """
+
+    chksum = '1e18d9c0cf734940c4b5d5ec592facaed2af0ad0329383d5639c997fdf16fe49'
+
+    def add_common_args(self):
+        self.vm.add_args('-bios',
+                         os.path.join(BUILD_DIR, 'pc-bios',
+                                      'edk2-aarch64-code.fd'))
+        self.vm.add_args('-device', 'virtio-rng-pci,rng=rng0')
+        self.vm.add_args('-object', 'rng-random,id=rng0,filename=/dev/urandom')
+
+    def test_virt_tcg(self):
+        """
+        :avocado: tags=accel:tcg
+        :avocado: tags=cpu:max
+        """
+        if not tcg_available(self.qemu_bin):
+            self.cancel(TCG_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "tcg")
+        self.vm.add_args("-cpu", "max")
+        self.vm.add_args("-machine", "virt,gic-version=2")
+        self.add_common_args()
+        self.launch_and_wait()
+
+    def test_virt_kvm(self):
+        """
+        :avocado: tags=accel:kvm
+        :avocado: tags=cpu:host
+        """
+        if not kvm_available(self.arch, self.qemu_bin):
+            self.cancel(KVM_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "kvm")
+        self.vm.add_args("-cpu", "host")
+        self.vm.add_args("-machine", "virt,gic-version=2")
+        self.add_common_args()
+        self.launch_and_wait()
+
+
+class BootLinuxPPC64(BootLinux):
+    """
+    :avocado: tags=arch:ppc64
+    """
+
+    chksum = '7c3528b85a3df4b2306e892199a9e1e43f991c506f2cc390dc4efa2026ad2f58'
+
+    def test_pseries_tcg(self):
+        """
+        :avocado: tags=machine:pseries
+        :avocado: tags=accel:tcg
+        """
+        if not tcg_available(self.qemu_bin):
+            self.cancel(TCG_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "tcg")
+        self.launch_and_wait()
+
+
+class BootLinuxS390X(BootLinux):
+    """
+    :avocado: tags=arch:s390x
+    """
+
+    chksum = '4caaab5a434fd4d1079149a072fdc7891e354f834d355069ca982fdcaf5a122d'
+
+    def test_s390_ccw_virtio_tcg(self):
+        """
+        :avocado: tags=machine:s390-ccw-virtio
+        :avocado: tags=accel:tcg
+        """
+        if not tcg_available(self.qemu_bin):
+            self.cancel(TCG_NOT_AVAILABLE)
+        self.vm.add_args("-accel", "tcg")
+        self.launch_and_wait()
diff --git a/tests/requirements.txt b/tests/requirements.txt
index f4f1736a08..f9c84b4ba1 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -2,3 +2,4 @@
 # in the tests/venv Python virtual environment. For more info,
 # refer to: https://pip.pypa.io/en/stable/user_guide/#id1
 avocado-framework==76.0
+pycdlib==1.9.0
-- 
2.25.1