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109 lines
3.5 KiB
Python
Executable File
109 lines
3.5 KiB
Python
Executable File
#!/usr/bin/python3
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# Dump the output of LD_TRACE_LOADED_OBJECTS in architecture neutral format.
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# Copyright (C) 2022-2023 Free Software Foundation, Inc.
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# Copyright The GNU Toolchain Authors.
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# This file is part of the GNU C Library.
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#
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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import argparse
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import os
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import subprocess
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import sys
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try:
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subprocess.run
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except:
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class _CompletedProcess:
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def __init__(self, args, returncode, stdout=None, stderr=None):
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self.args = args
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self.returncode = returncode
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self.stdout = stdout
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self.stderr = stderr
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def _run(*popenargs, input=None, timeout=None, check=False, **kwargs):
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assert(timeout is None)
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with subprocess.Popen(*popenargs, **kwargs) as process:
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try:
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stdout, stderr = process.communicate(input)
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except:
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process.kill()
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process.wait()
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raise
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returncode = process.poll()
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if check and returncode:
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raise subprocess.CalledProcessError(returncode, popenargs)
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return _CompletedProcess(popenargs, returncode, stdout, stderr)
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subprocess.run = _run
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def is_vdso(lib):
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return lib.startswith('linux-gate') or lib.startswith('linux-vdso')
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def parse_trace(cmd, fref):
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new_env = os.environ.copy()
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new_env['LD_TRACE_LOADED_OBJECTS'] = '1'
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trace_out = subprocess.run(cmd, stdout=subprocess.PIPE, check=True,
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universal_newlines=True, env=new_env).stdout
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trace = []
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for line in trace_out.splitlines():
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line = line.strip()
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if is_vdso(line):
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continue
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fields = line.split('=>' if '=>' in line else ' ')
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lib = os.path.basename(fields[0].strip())
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if lib.startswith('ld'):
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lib = 'ld'
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elif lib.startswith('libc'):
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lib = 'libc'
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found = 1 if fields[1].strip() != 'not found' else 0
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trace += ['{} {}'.format(lib, found)]
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trace = sorted(trace)
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reference = sorted(line.replace('\n','') for line in fref.readlines())
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ret = 0 if trace == reference else 1
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if ret != 0:
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for i in reference:
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if i not in trace:
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print("Only in {}: {}".format(fref.name, i))
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for i in trace:
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if i not in reference:
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print("Only in trace: {}".format(i))
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sys.exit(ret)
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def get_parser():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('command',
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help='comand to run')
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parser.add_argument('reference',
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help='reference file to compare')
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return parser
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def main(argv):
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parser = get_parser()
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opts = parser.parse_args(argv)
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with open(opts.reference, 'r') as fref:
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# Remove the initial 'env' command.
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parse_trace(opts.command.split()[1:], fref)
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if __name__ == '__main__':
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main(sys.argv[1:])
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