Merge tag 'pull-request-2024-12-18' of https://gitlab.com/thuth/qemu into staging

* Lots of functional test improvements (clean-ups, don't fail on
  temporary download errors, etc.)
* Convert some more avocado tests to the functional framework
* Disallow building with libnfs v6 due to an API breakage

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# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2024-12-18' of https://gitlab.com/thuth/qemu: (38 commits)
  meson.build: Disallow libnfs v6 to fix the broken macOS build
  tests/functional: Convert the hotplug_cpu avocado test
  tests/functional: Convert the intel_iommu avocado test
  tests/functional: Add a helper function for retrieving the hostfwd port
  tests/functional: Convert the arm virt avocado test
  tests/functional: Convert the quanta-gsj avocado test
  MAINTAINERS: add myself as reviewer for functional test suite
  tests/functional: ignore errors when caching assets, except for 404
  tests/functional: skip tests if assets are not available
  tests/functional: remove now unused 'run_cmd' helper
  tests/functional: replace 'run_cmd' with subprocess helpers
  tests/functional: drop back compat imports from utils.py
  tests/functional: convert tests to new uncompress helper
  tests/functional: add 'uncompress' to QemuBaseTest
  tests/functional: add a generalized uncompress helper
  tests/functional: convert tests to new archive_extract helper
  tests/functional: add 'archive_extract' to QemuBaseTest
  tests/functional: add a generalized archive_extract
  tests/functional: let cpio_extract accept filenames
  tests/functional: add common deb_extract helper
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/tests/functional/qemu_test/uncompress.py b/tests/functional/qemu_test/uncompress.py
new file mode 100644
index 0000000000..6d02ded066
--- /dev/null
+++ b/tests/functional/qemu_test/uncompress.py
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Utilities for python-based QEMU tests
+#
+# Copyright 2024 Red Hat, Inc.
+#
+# Authors:
+#  Thomas Huth <thuth@redhat.com>
+
+import gzip
+import lzma
+import os
+import shutil
+from urllib.parse import urlparse
+
+from .asset import Asset
+
+
+def gzip_uncompress(gz_path, output_path):
+    if os.path.exists(output_path):
+        return
+    with gzip.open(gz_path, 'rb') as gz_in:
+        try:
+            with open(output_path, 'wb') as raw_out:
+                shutil.copyfileobj(gz_in, raw_out)
+        except:
+            os.remove(output_path)
+            raise
+
+def lzma_uncompress(xz_path, output_path):
+    if os.path.exists(output_path):
+        return
+    with lzma.open(xz_path, 'rb') as lzma_in:
+        try:
+            with open(output_path, 'wb') as raw_out:
+                shutil.copyfileobj(lzma_in, raw_out)
+        except:
+            os.remove(output_path)
+            raise
+
+'''
+@params compressed: filename, Asset, or file-like object to uncompress
+@params uncompressed: filename to uncompress into
+@params format: optional compression format (gzip, lzma)
+
+Uncompresses @compressed into @uncompressed
+
+If @format is None, heuristics will be applied to guess the format
+from the filename or Asset URL. @format must be non-None if @uncompressed
+is a file-like object.
+
+Returns the fully qualified path to the uncompessed file
+'''
+def uncompress(compressed, uncompressed, format=None):
+    if format is None:
+        format = guess_uncompress_format(compressed)
+
+    if format == "xz":
+        lzma_uncompress(str(compressed), uncompressed)
+    elif format == "gz":
+        gzip_uncompress(str(compressed), uncompressed)
+    else:
+        raise Exception(f"Unknown compression format {format}")
+
+'''
+@params compressed: filename, Asset, or file-like object to guess
+
+Guess the format of @compressed, raising an exception if
+no format can be determined
+'''
+def guess_uncompress_format(compressed):
+    if type(compressed) == Asset:
+        compressed = urlparse(compressed.url).path
+    elif type(compressed) != str:
+        raise Exception(f"Unable to guess compression cformat for {compressed}")
+
+    (name, ext) = os.path.splitext(compressed)
+    if ext == ".xz":
+        return "xz"
+    elif ext == ".gz":
+        return "gz"
+    else:
+        raise Exception(f"Unknown compression format for {compressed}")