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author | Florian Weimer <fweimer@redhat.com> | 2021-03-16 15:56:50 +0100 |
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committer | Florian Weimer <fweimer@redhat.com> | 2021-03-16 15:57:04 +0100 |
commit | b9e29037120380d1cde7b80b47fe1baee3f77a7a (patch) | |
tree | c4d1058ffc30799400284379afa2c71b3dfc5dc4 /scripts/glibcsymbols.py | |
parent | 4b7259555c6ded82a2b4b598efa770c2086e203f (diff) | |
download | glibc-b9e29037120380d1cde7b80b47fe1baee3f77a7a.tar.gz glibc-b9e29037120380d1cde7b80b47fe1baee3f77a7a.tar.xz glibc-b9e29037120380d1cde7b80b47fe1baee3f77a7a.zip |
scripts/glibcsymbols.py: Extract from scripts/move-symbol-to-libc.py
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'scripts/glibcsymbols.py')
-rw-r--r-- | scripts/glibcsymbols.py | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/scripts/glibcsymbols.py b/scripts/glibcsymbols.py new file mode 100644 index 0000000000..e329ead7f2 --- /dev/null +++ b/scripts/glibcsymbols.py @@ -0,0 +1,80 @@ +#!/usr/bin/python3 +# Processing of symbols and abilist files. +# Copyright (C) 2020-2021 Free Software Foundation, Inc. +# This file is part of the GNU C Library. +# +# The GNU C Library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# The GNU C Library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with the GNU C Library; if not, see +# <https://www.gnu.org/licenses/>. + +"""Symbol processing for glibc.""" + +import os + +def replace_file(path, new_contents): + """Atomically replace PATH with lines from NEW_CONTENTS. + + NEW_CONTENTS must be a sequence of strings. + + """ + temppath = path + 'T' + with open(temppath, 'w') as out: + for line in new_contents: + out.write(line) + os.rename(temppath, path) + +class VersionedSymbol: + """A combination of a symbol and its version.""" + + def __init__(self, symbol, version): + """Construct a new versioned symbol.""" + assert symbol + assert version + self.symbol = symbol + self.version = version + + def __str__(self): + return self.symbol + '@' + self.version + + def __eq__(self, other): + return self.symbol == other.symbol and self.version == other.version + + def __hash__(self): + return hash(self.symbol) ^ hash(self.version) + +def read_abilist(path): + """Read the abilist file at PATH. + + Return a dictionary from VersionedSymbols to their flags (as + strings). + + """ + result = {} + with open(path) as inp: + for line in inp: + version, symbol, flags = line.strip().split(' ', 2) + result[VersionedSymbol(symbol, version)] = flags + return result + +def abilist_lines(symbols): + """Build the abilist file contents (as a list of lines). + + SYMBOLS is a dictionary from VersionedSymbols to their flags. + + """ + result = [] + for versym, flags in symbols.items(): + result.append('{} {} {}\n'.format( + versym.version, versym.symbol, flags)) + result.sort() + return result |