enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/scripts/checkkconfigsymbols.py
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@@ -1,11 +1,11 @@
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 #!/usr/bin/env python3
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+# SPDX-License-Identifier: GPL-2.0-only
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 """Find Kconfig symbols that are referenced but not defined."""
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 # (c) 2014-2017 Valentin Rothberg <valentinrothberg@gmail.com>
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 # (c) 2014 Stefan Hengelein <stefan.hengelein@fau.de>
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 #
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-# Licensed under the terms of the GNU GPL License version 2
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 import argparse
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@@ -34,7 +34,7 @@
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 REGEX_KCONFIG_DEF = re.compile(DEF)
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 REGEX_KCONFIG_EXPR = re.compile(EXPR)
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 REGEX_KCONFIG_STMT = re.compile(STMT)
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-REGEX_KCONFIG_HELP = re.compile(r"^\s+(help|---help---)\s*$")
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+REGEX_KCONFIG_HELP = re.compile(r"^\s+help\s*$")
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 REGEX_FILTER_SYMBOLS = re.compile(r"[A-Za-z0-9]$")
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 REGEX_NUMERIC = re.compile(r"0[xX][0-9a-fA-F]+|[0-9]+")
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 REGEX_QUOTES = re.compile("(\"(.*?)\")")
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@@ -113,7 +113,7 @@
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     return args
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-def main():
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+def print_undefined_symbols():
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     """Main function of this module."""
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     args = parse_options()
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@@ -472,5 +472,16 @@
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     return defined, references
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+def main():
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+    try:
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+        print_undefined_symbols()
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+    except BrokenPipeError:
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+        # Python flushes standard streams on exit; redirect remaining output
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+        # to devnull to avoid another BrokenPipeError at shutdown
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+        devnull = os.open(os.devnull, os.O_WRONLY)
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+        os.dup2(devnull, sys.stdout.fileno())
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+        sys.exit(1)  # Python exits with error code 1 on EPIPE
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+
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+
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 if __name__ == "__main__":
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     main()