From fea07508c858d152711d51597f7c9df13f3cad02 Mon Sep 17 00:00:00 2001 From: Alexander Popov Date: Fri, 2 Sep 2022 18:04:04 +0300 Subject: [PATCH] Detect the compiler used for the kernel compilation --- kconfig_hardened_check/__init__.py | 31 ++++++++++++++++++++++++++++-- 1 file changed, 29 insertions(+), 2 deletions(-) diff --git a/kconfig_hardened_check/__init__.py b/kconfig_hardened_check/__init__.py index a7beeb7..2cbcfa5 100644 --- a/kconfig_hardened_check/__init__.py +++ b/kconfig_hardened_check/__init__.py @@ -288,7 +288,7 @@ def detect_arch(fname, archs): return arch, 'OK' -def detect_version(fname): +def detect_kernel_version(fname): with open(fname, 'r') as f: ver_pattern = re.compile("# Linux/.* Kernel Configuration") for line in f.readlines(): @@ -304,6 +304,26 @@ def detect_version(fname): return None, 'no kernel version detected' +def detect_compiler(fname): + gcc_version = None + clang_version = None + with open(fname, 'r') as f: + gcc_version_pattern = re.compile("CONFIG_GCC_VERSION=[0-9]*") + clang_version_pattern = re.compile("CONFIG_CLANG_VERSION=[0-9]*") + for line in f.readlines(): + if gcc_version_pattern.match(line): + gcc_version = line[19:-1] + if clang_version_pattern.match(line): + clang_version = line[21:-1] + if not gcc_version or not clang_version: + return None, 'no CONFIG_GCC_VERSION or CONFIG_CLANG_VERSION' + if gcc_version == '0' and clang_version != '0': + return 'CLANG ' + clang_version, 'OK' + if gcc_version != '0' and clang_version == '0': + return 'GCC ' + gcc_version, 'OK' + sys.exit('[!] ERROR: invalid GCC_VERSION and CLANG_VERSION: {} {}'.format(gcc_version, clang_version)) + + def add_kconfig_checks(l, arch): # Calling the KconfigCheck class constructor: # KconfigCheck(reason, decision, name, expected) @@ -959,12 +979,19 @@ def main(): if mode != 'json': print('[+] Detected architecture: {}'.format(arch)) - kernel_version, msg = detect_version(args.config) + kernel_version, msg = detect_kernel_version(args.config) if not kernel_version: sys.exit('[!] ERROR: {}'.format(msg)) if mode != 'json': print('[+] Detected kernel version: {}.{}'.format(kernel_version[0], kernel_version[1])) + compiler, msg = detect_compiler(args.config) + if mode != 'json': + if compiler: + print('[+] Detected compiler: {}'.format(compiler)) + else: + print('[-] Can\'t detect the compiler: {}'.format(msg)) + # add relevant kconfig checks to the checklist add_kconfig_checks(config_checklist, arch) -- 2.31.1