kconfig check: support passing a file directly (!1802)

This allows for example for me to call the kconfig check function on the
.config file in my Linux tree: $ pmbootstrap kconfig check --file
.config and it reports me which kconfig options I need to enable.
This commit is contained in:
Luca Weiss 2019-07-20 18:49:05 +02:00 committed by Oliver Smith
parent 9dc326ecb8
commit 30384b9083
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GPG Key ID: 5AE7F5513E0885CB
3 changed files with 97 additions and 43 deletions

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@ -247,6 +247,13 @@ def newapkbuild(args):
def kconfig(args):
if args.action_kconfig == "check":
# Handle passing a file directly
if args.file:
if pmb.parse.kconfig.check_file(args, args.package, details=True):
logging.info("kconfig check succeeded!")
return
raise RuntimeError("kconfig check failed!")
# Default to all kernel packages
packages = []
if args.package == "" or args.package is None:

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@ -227,6 +227,8 @@ def arguments_kconfig(subparser):
" kernels, even the ones that would be ignored by"
" default")
check.add_argument("--arch", choices=arch_choices, dest="arch")
check.add_argument("--file", action="store_true", help="check a file"
" directly instead of a config in a package")
check_package = check.add_argument("package", default="", nargs='?')
if argcomplete:
check_package.completer = kernel_completer

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@ -35,6 +35,52 @@ def is_set(config, option):
return re.search("^CONFIG_" + option + "=[ym]", config, re.M) is not None
def check_config(config_path, config_path_pretty, config_arch, pkgver, details=False):
logging.debug("Check kconfig: " + config_path)
with open(config_path) as handle:
config = handle.read()
# Loop through necessary config options, and print a warning,
# if any is missing
ret = True
for rule, archs_options in pmb.config.necessary_kconfig_options.items():
# Skip options irrelevant for the current kernel's version
if not pmb.parse.version.check_string(pkgver, rule):
continue
for archs, options in archs_options.items():
if archs != "all":
# Split and check if the device's architecture architecture has special config
# options. If option does not contain the architecture of the device
# kernel, then just skip the option.
architectures = archs.split(" ")
if config_arch not in architectures:
continue
for option, option_value in options.items():
if option_value not in [True, False]:
raise RuntimeError("kconfig check code can only handle"
" True/False right now, given value '" +
str(option_value) + "' is not supported. If you"
" need this, please open an issue.")
if option_value != is_set(config, option):
ret = False
if details:
should = "should" if option_value else "should *not*"
link = ("https://wiki.postmarketos.org/wiki/"
"Kernel_configuration#CONFIG_" + option)
logging.info("WARNING: " + config_path_pretty + ": CONFIG_" + option + " " +
should + " be set. See <" + link +
"> for details.")
else:
logging.warning("WARNING: " + config_path_pretty + " isn't configured"
" properly for postmarketOS, run"
" 'pmbootstrap kconfig check' for"
" details!")
break
return ret
def check(args, pkgname, details=False):
"""
Check for necessary kernel config options.
@ -54,50 +100,49 @@ def check(args, pkgname, details=False):
aport = pmb.helpers.pmaports.find(args, "linux-" + flavor)
pkgver = pmb.parse.apkbuild(args, aport + "/APKBUILD")["pkgver"]
for config_path in glob.glob(aport + "/config-*"):
logging.debug("Check kconfig: " + config_path)
with open(config_path) as handle:
config = handle.read()
# The architecture of the config is in the name, so it just needs to be
# extracted
config_arch = os.path.basename(config_path).split(".")[1]
# Loop trough necessary config options, and print a warning,
# if any is missing
path = "linux-" + flavor + "/" + os.path.basename(config_path)
for rule, archs_options in pmb.config.necessary_kconfig_options.items():
# Skip options irrelevant for the current kernel's version
if not pmb.parse.version.check_string(pkgver, rule):
continue
for archs, options in archs_options.items():
if archs != "all":
# Split and check if the device's architecture architecture has special config
# options. If option does not contain the architecture of the device
# kernel, then just skip the option.
architectures = archs.split(" ")
if config_arch not in architectures:
continue
for option, option_value in options.items():
if option_value not in [True, False]:
raise RuntimeError("kconfig check code can only handle"
" True/False right now, given value '" +
str(option_value) + "' is not supported. If you"
" need this, please open an issue.")
if option_value != is_set(config, option):
ret = False
if details:
should = "should" if option_value else "should *not*"
link = ("https://wiki.postmarketos.org/wiki/"
"Kernel_configuration#CONFIG_" + option)
logging.info("WARNING: " + path + ": CONFIG_" + option + " " +
should + " be set. See <" + link +
"> for details.")
else:
logging.warning("WARNING: " + path + " isn't configured"
" properly for postmarketOS, run"
" 'pmbootstrap kconfig check' for"
" details!")
break
config_path_pretty = "linux-" + flavor + "/" + os.path.basename(config_path)
ret &= check_config(config_path, config_path_pretty, config_arch, pkgver, details)
return ret
def extract_arch(config_file):
# Extract the architecture out of the config
with open(config_file) as f:
config = f.read()
if is_set(config, "ARM"):
return "armv7"
elif is_set(config, "ARM64"):
return "aarch64"
elif is_set(config, "X86_32"):
return "x86"
elif is_set(config, "X86_64"):
return "x86_64"
# No match
logging.info("WARNING: failed to extract arch from kernel config")
return "unknown"
def extract_version(config_file):
# Try to extract the version string out of the comment header
with open(config_file) as f:
# Read the first 3 lines of the file and get the third line only
text = [next(f) for x in range(3)][2]
ver_match = re.match(r"# Linux/\S+ (\S+) Kernel Configuration", text)
if ver_match:
return ver_match.group(1)
# No match
logging.info("WARNING: failed to extract version from kernel config")
return "unknown"
def check_file(args, config_file, details=False):
arch = extract_arch(config_file)
version = extract_version(config_file)
logging.debug("Check kconfig: parsed arch=" + arch + ", version=" +
version + " from file: " + config_file)
return check_config(config_file, config_file, arch, version, details)