forked from mirrors/linux
		
	If the directory passed to the '.. kernel-feat::' directive does not
exist or the get_feat.pl script does not find any files to extract
features from, Sphinx will report the following error:
    Sphinx parallel build error:
    UnboundLocalError: local variable 'fname' referenced before assignment
    make[2]: *** [Documentation/Makefile:102: htmldocs] Error 2
This is due to how I changed the script in c48a7c44a1 ("docs:
kernel_feat.py: fix potential command injection"). Before that, the
filename passed along to self.nestedParse() in this case was weirdly
just the whole get_feat.pl invocation.
We can fix it by doing what kernel_abi.py does -- just pass
self.arguments[0] as 'fname'.
Fixes: c48a7c44a1 ("docs: kernel_feat.py: fix potential command injection")
Cc: Justin Forbes <jforbes@fedoraproject.org>
Cc: Salvatore Bonaccorso <carnil@debian.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Link: https://lore.kernel.org/r/20240205175133.774271-2-vegard.nossum@oracle.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
		
	
			
		
			
				
	
	
		
			133 lines
		
	
	
	
		
			3.8 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			133 lines
		
	
	
	
		
			3.8 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
# coding=utf-8
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# SPDX-License-Identifier: GPL-2.0
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#
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u"""
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    kernel-feat
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    ~~~~~~~~~~~
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    Implementation of the ``kernel-feat`` reST-directive.
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    :copyright:  Copyright (C) 2016  Markus Heiser
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    :copyright:  Copyright (C) 2016-2019  Mauro Carvalho Chehab
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    :maintained-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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    :license:    GPL Version 2, June 1991 see Linux/COPYING for details.
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    The ``kernel-feat`` (:py:class:`KernelFeat`) directive calls the
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    scripts/get_feat.pl script to parse the Kernel ABI files.
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    Overview of directive's argument and options.
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    .. code-block:: rst
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        .. kernel-feat:: <ABI directory location>
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            :debug:
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    The argument ``<ABI directory location>`` is required. It contains the
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    location of the ABI files to be parsed.
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    ``debug``
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      Inserts a code-block with the *raw* reST. Sometimes it is helpful to see
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      what reST is generated.
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"""
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import codecs
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import os
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import re
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import subprocess
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import sys
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from docutils import nodes, statemachine
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from docutils.statemachine import ViewList
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from docutils.parsers.rst import directives, Directive
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from docutils.utils.error_reporting import ErrorString
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from sphinx.util.docutils import switch_source_input
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__version__  = '1.0'
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def setup(app):
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    app.add_directive("kernel-feat", KernelFeat)
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    return dict(
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        version = __version__
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        , parallel_read_safe = True
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        , parallel_write_safe = True
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    )
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class KernelFeat(Directive):
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    u"""KernelFeat (``kernel-feat``) directive"""
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    required_arguments = 1
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    optional_arguments = 2
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    has_content = False
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    final_argument_whitespace = True
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    option_spec = {
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        "debug"     : directives.flag
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    }
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    def warn(self, message, **replace):
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        replace["fname"]   = self.state.document.current_source
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        replace["line_no"] = replace.get("line_no", self.lineno)
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        message = ("%(fname)s:%(line_no)s: [kernel-feat WARN] : " + message) % replace
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        self.state.document.settings.env.app.warn(message, prefix="")
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    def run(self):
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        doc = self.state.document
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        if not doc.settings.file_insertion_enabled:
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            raise self.warning("docutils: file insertion disabled")
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        env = doc.settings.env
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        srctree = os.path.abspath(os.environ["srctree"])
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        args = [
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            os.path.join(srctree, 'scripts/get_feat.pl'),
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            'rest',
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            '--enable-fname',
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            '--dir',
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            os.path.join(srctree, 'Documentation', self.arguments[0]),
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        ]
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        if len(self.arguments) > 1:
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            args.extend(['--arch', self.arguments[1]])
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        lines = subprocess.check_output(args, cwd=os.path.dirname(doc.current_source)).decode('utf-8')
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        line_regex = re.compile(r"^\.\. FILE (\S+)$")
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        out_lines = ""
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        for line in lines.split("\n"):
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            match = line_regex.search(line)
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            if match:
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                fname = match.group(1)
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                # Add the file to Sphinx build dependencies
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                env.note_dependency(os.path.abspath(fname))
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            else:
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                out_lines += line + "\n"
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        nodeList = self.nestedParse(out_lines, self.arguments[0])
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        return nodeList
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    def nestedParse(self, lines, fname):
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        content = ViewList()
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        node    = nodes.section()
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        if "debug" in self.options:
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            code_block = "\n\n.. code-block:: rst\n    :linenos:\n"
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            for l in lines.split("\n"):
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                code_block += "\n    " + l
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            lines = code_block + "\n\n"
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        for c, l in enumerate(lines.split("\n")):
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            content.append(l, fname, c)
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        buf  = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
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        with switch_source_input(self.state, content):
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            self.state.nested_parse(content, 0, node, match_titles=1)
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        return node.children
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