Merge pull request #811 from c-po/realtek-signing

Kernel: T861: T6713: fix generation of realtek driver signature

1 files changed, 95 insertions, 0 deletions

diff --git a/scripts/package-build/linux-kernel/build-realtek-r8152.py b/scripts/package-build/linux-kernel/build-realtek-r8152.py
new file mode 100755
index 00000000..25c1b0fe
--- /dev/null
+++ b/scripts/package-build/linux-kernel/build-realtek-r8152.py
@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+
+import os
+from tomllib import loads as toml_loads
+from requests import get
+from pathlib import Path
+from subprocess import run
+
+CWD = os.getcwd()
+
+# dependency modifier
+def add_depends(package_dir: str, package_name: str,
+                depends: list[str]) -> None:
+    """Add dependencies to a package
+    Args:
+        package_dir (str): a directory where package sources are located
+        package_name (str): a name of package
+        depends (list[str]): a list of dependencies to add
+    """
+    depends_list: str = ', '.join(depends)
+    depends_line: str = f'misc:Depends={depends_list}\n'
+
+    substvars_file = Path(f'{package_dir}/debian/{package_name}.substvars')
+    substvars_file.write_text(depends_line)
+
+
+# find kernel version and source path
+defaults_file: str = Path('../../../data/defaults.toml').read_text()
+architecture_file: str = Path('../../../data/architectures/amd64.toml').read_text()
+KERNEL_VER: str = toml_loads(defaults_file).get('kernel_version')
+KERNEL_FLAVOR: str = toml_loads(defaults_file).get('kernel_flavor')
+KERNEL_SRC: str = Path.cwd().as_posix() + '/linux'
+# define variables
+PACKAGE_NAME: str = 'vyos-drivers-realtek-r8152'
+PACKAGE_VERSION: str = '2.18.1'
+PACKAGE_DIR: str = f'{PACKAGE_NAME}-{PACKAGE_VERSION}'
+SOURCES_ARCHIVE: str = 'r8152-2.18.1-1.tar.gz'
+SOURCES_URL: str = f'https://github.com/bb-qq/r8152/archive/refs/tags/2.18.1-1.tar.gz'
+
+# download sources
+sources_archive = Path(SOURCES_ARCHIVE)
+sources_archive.write_bytes(get(SOURCES_URL).content)
+
+# prepare sources
+debmake_cmd: list[str] = [
+    'debmake', '-e', 'support@vyos.io', '-f', 'VyOS Support', '-p',
+    PACKAGE_NAME, '-u', PACKAGE_VERSION, '-a', SOURCES_ARCHIVE
+]
+run(debmake_cmd)
+
+# add kernel to dependencies
+add_depends(PACKAGE_DIR, PACKAGE_NAME,
+            [f'linux-image-{KERNEL_VER}-{KERNEL_FLAVOR}'])
+
+# configure build rules
+build_rules_text: str = '''#!/usr/bin/make -f
+# config
+export KERNELDIR := {KERNEL_SRC}
+PACKAGE_BUILD_DIR := debian/{PACKAGE_NAME}
+KVER := {KERNEL_VER}-{KERNEL_FLAVOR}
+MODULES_DIR := updates/drivers/net/usb
+# main packaging script based on dh7 syntax
+%:
+\tdh $@
+
+override_dh_clean:
+\tdh_clean --exclude=debian/{PACKAGE_NAME}.substvars
+
+override_dh_prep:
+\tdh_prep --exclude=debian/{PACKAGE_NAME}.substvars
+
+override_dh_auto_clean:
+\tmake clean
+
+override_dh_auto_build:
+\techo "KERNELDIR=${{KERNELDIR}}"
+\techo "CURDIR=${{CURDIR}}"
+\tmake -C ${{KERNELDIR}} M=${{CURDIR}} modules
+
+override_dh_auto_install:
+\tinstall -D -m 644 r8152.ko ${{PACKAGE_BUILD_DIR}}/lib/modules/${{KVER}}/${{MODULES_DIR}}/r8152.ko
+\t${{KERNELDIR}}/../sign-modules.sh ${{PACKAGE_BUILD_DIR}}/lib
+\tinstall -D -m 644 50-usb-realtek-net.rules ${{PACKAGE_BUILD_DIR}}/etc/udev/rules.d/50-usb-realtek-net.rules
+'''.format(KERNEL_SRC=KERNEL_SRC, PACKAGE_NAME=PACKAGE_NAME, KERNEL_VER=KERNEL_VER, KERNEL_FLAVOR=KERNEL_FLAVOR)
+
+build_rules_path = Path(f'{PACKAGE_DIR}/debian/rules')
+build_rules_path.write_text(build_rules_text, encoding='utf-8')
+
+# build a package
+debuild_cmd: list[str] = ['debuild']
+run(debuild_cmd, cwd=PACKAGE_DIR, check=True)
+
+# Sign generated Kernel modules
+clean_cmd: list[str] = ['rm', '-rf', PACKAGE_DIR]
+run(clean_cmd, cwd=CWD, check=True)