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11/17/2022 06:42:18 AM
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.gitignore
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Kbuild.include
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Lindent
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Makefile
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adjust_autoksyms.sh
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asn1_compiler.c
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basic
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bloat-o-meter
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bootgraph.pl
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check_00index.sh
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check_extable.sh
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checkincludes.pl
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checkkconfigsymbols.py
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checkpatch.pl
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checkstack.pl
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checksyscalls.sh
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checkversion.pl
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cleanfile
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cleanpatch
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coccicheck
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coccinelle
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config
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conmakehash.c
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const_structs.checkpatch
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decode_stacktrace.sh
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decodecode
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depmod.sh
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diffconfig
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documentation-file-ref-check
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dtc
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export_report.pl
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extract-cert.c
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extract-ikconfig
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extract-module-sig.pl
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extract-sys-certs.pl
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extract-vmlinux
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extract_xc3028.pl
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faddr2line
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find-unused-docs.sh
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gcc-goto.sh
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gcc-ld
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gcc-plugin.sh
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gcc-plugins
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gcc-version.sh
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gcc-x86_32-has-stack-protector.sh
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gcc-x86_64-has-stack-protector.sh
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gdb
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gen_initramfs_list.sh
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genksyms
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get_dvb_firmware
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get_maintainer.pl
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gfp-translate
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headerdep.pl
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headers.sh
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headers_check.pl
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headers_install.sh
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insert-sys-cert.c
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kallsyms.c
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kconfig
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kernel-doc
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kmsg-doc
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ksymoops
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ld-version.sh
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leaking_addresses.pl
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link-vmlinux.sh
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makelst
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markup_oops.pl
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mkcompile_h
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mkmakefile
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mksysmap
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mkuboot.sh
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mod
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module-common.lds
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namespace.pl
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objdiff
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package
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parse-maintainers.pl
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patch-kernel
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pnmtologo.c
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profile2linkerlist.pl
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prune-kernel
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recordmcount.c
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recordmcount.h
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recordmcount.pl
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selinux
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setlocalversion
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show_delta
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sign-file.c
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sortextable.c
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sortextable.h
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spelling.txt
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sphinx-pre-install
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stackdelta
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stackusage
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subarch.include
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tags.sh
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tracing
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ubuntu-retpoline-extract-one
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unifdef.c
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ver_linux
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xen-hypercalls.sh
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xz_wrap.sh
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Editing: headers_check.pl
Close
#!/usr/bin/env perl # SPDX-License-Identifier: GPL-2.0 # # headers_check.pl execute a number of trivial consistency checks # # Usage: headers_check.pl dir arch [files...] # dir: dir to look for included files # arch: architecture # files: list of files to check # # The script reads the supplied files line by line and: # # 1) for each include statement it checks if the # included file actually exists. # Only include files located in asm* and linux* are checked. # The rest are assumed to be system include files. # # 2) It is checked that prototypes does not use "extern" # # 3) Check for leaked CONFIG_ symbols use warnings; use strict; use File::Basename; my ($dir, $arch, @files) = @ARGV; my $ret = 0; my $line; my $lineno = 0; my $filename; foreach my $file (@files) { $filename = $file; open(my $fh, '<', $filename) or die "$filename: $!\n"; $lineno = 0; while ($line = <$fh>) { $lineno++; &check_include(); &check_asm_types(); &check_sizetypes(); &check_declarations(); # Dropped for now. Too much noise &check_config(); } close $fh; } exit $ret; sub check_include { if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) { my $inc = $1; my $found; $found = stat($dir . "/" . $inc); if (!$found) { $inc =~ s#asm/#asm-$arch/#; $found = stat($dir . "/" . $inc); } if (!$found) { printf STDERR "$filename:$lineno: included file '$inc' is not exported\n"; $ret = 1; } } } sub check_declarations { # soundcard.h is what it is if ($line =~ m/^void seqbuf_dump\(void\);/) { return; } # drm headers are being C++ friendly if ($line =~ m/^extern "C"/) { return; } if ($line =~ m/^(\s*extern|unsigned|char|short|int|long|void)\b/) { printf STDERR "$filename:$lineno: " . "userspace cannot reference function or " . "variable defined in the kernel\n"; } } sub check_config { if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9_]+)[^a-zA-Z0-9_]/) { printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n"; } } my $linux_asm_types; sub check_asm_types { if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) { return; } if ($lineno == 1) { $linux_asm_types = 0; } elsif ($linux_asm_types >= 1) { return; } if ($line =~ m/^\s*#\s*include\s+<asm\/types.h>/) { $linux_asm_types = 1; printf STDERR "$filename:$lineno: " . "include of <linux/types.h> is preferred over <asm/types.h>\n" # Warn until headers are all fixed #$ret = 1; } } my $linux_types; my %import_stack = (); sub check_include_typesh { my $path = $_[0]; my $import_path; my $fh; my @file_paths = ($path, $dir . "/" . $path, dirname($filename) . "/" . $path); for my $possible ( @file_paths ) { if (not $import_stack{$possible} and open($fh, '<', $possible)) { $import_path = $possible; $import_stack{$import_path} = 1; last; } } if (eof $fh) { return; } my $line; while ($line = <$fh>) { if ($line =~ m/^\s*#\s*include\s+<linux\/types.h>/) { $linux_types = 1; last; } if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) { check_include_typesh($included); } } close $fh; delete $import_stack{$import_path}; } sub check_sizetypes { if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) { return; } if ($lineno == 1) { $linux_types = 0; } elsif ($linux_types >= 1) { return; } if ($line =~ m/^\s*#\s*include\s+<linux\/types.h>/) { $linux_types = 1; return; } if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) { check_include_typesh($included); } if ($line =~ m/__[us](8|16|32|64)\b/) { printf STDERR "$filename:$lineno: " . "found __[us]{8,16,32,64} type " . "without #include <linux/types.h>\n"; $linux_types = 2; # Warn until headers are all fixed #$ret = 1; } }