3734 строки
101 KiB
Prolog
Executable File
3734 строки
101 KiB
Prolog
Executable File
#!/usr/bin/perl -w
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# (c) 2001, Dave Jones. (the file handling bit)
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# (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit)
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# (c) 2007,2008, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite)
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# (c) 2008-2010 Andy Whitcroft <apw@canonical.com>
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# Licensed under the terms of the GNU GPL License version 2
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use strict;
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my $P = $0;
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$P =~ s@.*/@@g;
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my $V = '0.32';
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use Getopt::Long qw(:config no_auto_abbrev);
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my $quiet = 0;
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my $tree = 1;
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my $chk_signoff = 1;
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my $chk_patch = 1;
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my $tst_only;
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my $emacs = 0;
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my $terse = 0;
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my $file = 0;
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my $check = 0;
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my $summary = 1;
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my $mailback = 0;
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my $summary_file = 0;
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my $show_types = 0;
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my $root;
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my %debug;
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my %ignore_type = ();
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my @ignore = ();
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my $help = 0;
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my $configuration_file = ".checkpatch.conf";
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my $max_line_length = 80;
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sub help {
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my ($exitcode) = @_;
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print << "EOM";
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Usage: $P [OPTION]... [FILE]...
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Version: $V
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Options:
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-q, --quiet quiet
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--no-tree run without a kernel tree
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--no-signoff do not check for 'Signed-off-by' line
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--patch treat FILE as patchfile (default)
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--emacs emacs compile window format
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--terse one line per report
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-f, --file treat FILE as regular source file
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--subjective, --strict enable more subjective tests
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--ignore TYPE(,TYPE2...) ignore various comma separated message types
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--max-line-length=n set the maximum line length, if exceeded, warn
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--show-types show the message "types" in the output
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--root=PATH PATH to the kernel tree root
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--no-summary suppress the per-file summary
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--mailback only produce a report in case of warnings/errors
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--summary-file include the filename in summary
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--debug KEY=[0|1] turn on/off debugging of KEY, where KEY is one of
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'values', 'possible', 'type', and 'attr' (default
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is all off)
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--test-only=WORD report only warnings/errors containing WORD
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literally
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-h, --help, --version display this help and exit
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When FILE is - read standard input.
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EOM
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exit($exitcode);
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}
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my $conf = which_conf($configuration_file);
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if (-f $conf) {
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my @conf_args;
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open(my $conffile, '<', "$conf")
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or warn "$P: Can't find a readable $configuration_file file $!\n";
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while (<$conffile>) {
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my $line = $_;
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$line =~ s/\s*\n?$//g;
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$line =~ s/^\s*//g;
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$line =~ s/\s+/ /g;
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next if ($line =~ m/^\s*#/);
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next if ($line =~ m/^\s*$/);
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my @words = split(" ", $line);
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foreach my $word (@words) {
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last if ($word =~ m/^#/);
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push (@conf_args, $word);
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}
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}
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close($conffile);
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unshift(@ARGV, @conf_args) if @conf_args;
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}
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GetOptions(
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'q|quiet+' => \$quiet,
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'tree!' => \$tree,
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'signoff!' => \$chk_signoff,
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'patch!' => \$chk_patch,
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'emacs!' => \$emacs,
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'terse!' => \$terse,
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'f|file!' => \$file,
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'subjective!' => \$check,
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'strict!' => \$check,
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'ignore=s' => \@ignore,
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'show-types!' => \$show_types,
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'max-line-length=i' => \$max_line_length,
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'root=s' => \$root,
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'summary!' => \$summary,
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'mailback!' => \$mailback,
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'summary-file!' => \$summary_file,
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'debug=s' => \%debug,
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'test-only=s' => \$tst_only,
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'h|help' => \$help,
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'version' => \$help
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) or help(1);
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help(0) if ($help);
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my $exit = 0;
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if ($#ARGV < 0) {
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print "$P: no input files\n";
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exit(1);
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}
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@ignore = split(/,/, join(',',@ignore));
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foreach my $word (@ignore) {
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$word =~ s/\s*\n?$//g;
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$word =~ s/^\s*//g;
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$word =~ s/\s+/ /g;
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$word =~ tr/[a-z]/[A-Z]/;
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next if ($word =~ m/^\s*#/);
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next if ($word =~ m/^\s*$/);
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$ignore_type{$word}++;
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}
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my $dbg_values = 0;
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my $dbg_possible = 0;
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my $dbg_type = 0;
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my $dbg_attr = 0;
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for my $key (keys %debug) {
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## no critic
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eval "\${dbg_$key} = '$debug{$key}';";
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die "$@" if ($@);
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}
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my $rpt_cleaners = 0;
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if ($terse) {
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$emacs = 1;
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$quiet++;
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}
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if ($tree) {
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if (defined $root) {
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if (!top_of_kernel_tree($root)) {
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die "$P: $root: --root does not point at a valid tree\n";
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}
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} else {
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if (top_of_kernel_tree('.')) {
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$root = '.';
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} elsif ($0 =~ m@(.*)/scripts/[^/]*$@ &&
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top_of_kernel_tree($1)) {
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$root = $1;
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}
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}
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if (!defined $root) {
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print "Must be run from the top-level dir. of a kernel tree\n";
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exit(2);
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}
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}
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my $emitted_corrupt = 0;
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our $Ident = qr{
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[A-Za-z_][A-Za-z\d_]*
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(?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
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}x;
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our $Storage = qr{extern|static|asmlinkage};
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our $Sparse = qr{
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__user|
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__kernel|
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__force|
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__iomem|
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__must_check|
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__init_refok|
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__kprobes|
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__ref|
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__rcu
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}x;
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# Notes to $Attribute:
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# We need \b after 'init' otherwise 'initconst' will cause a false positive in a check
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our $Attribute = qr{
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const|
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__percpu|
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__nocast|
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__safe|
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__bitwise__|
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__packed__|
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__packed2__|
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__naked|
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__maybe_unused|
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__always_unused|
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__noreturn|
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__used|
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__cold|
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__noclone|
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__deprecated|
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__read_mostly|
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__kprobes|
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__(?:mem|cpu|dev|)(?:initdata|initconst|init\b)|
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____cacheline_aligned|
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____cacheline_aligned_in_smp|
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____cacheline_internodealigned_in_smp|
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__weak
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}x;
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our $Modifier;
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our $Inline = qr{inline|__always_inline|noinline};
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our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
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our $Lval = qr{$Ident(?:$Member)*};
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our $Float_hex = qr{(?i)0x[0-9a-f]+p-?[0-9]+[fl]?};
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our $Float_dec = qr{(?i)(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+)(?:e-?[0-9]+)?[fl]?};
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our $Float_int = qr{(?i)[0-9]+e-?[0-9]+[fl]?};
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our $Float = qr{$Float_hex|$Float_dec|$Float_int};
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our $Constant = qr{$Float|(?i)(?:0x[0-9a-f]+|[0-9]+)[ul]*};
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our $Assignment = qr{\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=};
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our $Compare = qr{<=|>=|==|!=|<|>};
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our $Operators = qr{
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<=|>=|==|!=|
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=>|->|<<|>>|<|>|!|~|
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&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%
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}x;
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our $NonptrType;
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our $Type;
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our $Declare;
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our $NON_ASCII_UTF8 = qr{
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[\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
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| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
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| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
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| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
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| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
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| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
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| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
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}x;
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our $UTF8 = qr{
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[\x09\x0A\x0D\x20-\x7E] # ASCII
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| $NON_ASCII_UTF8
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}x;
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our $typeTypedefs = qr{(?x:
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(?:__)?(?:u|s|be|le)(?:8|16|32|64)|
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atomic_t
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)};
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our $logFunctions = qr{(?x:
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printk(?:_ratelimited|_once|)|
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[a-z0-9]+_(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)|
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WARN(?:_RATELIMIT|_ONCE|)|
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panic|
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MODULE_[A-Z_]+
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)};
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our $signature_tags = qr{(?xi:
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Signed-off-by:|
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Acked-by:|
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Tested-by:|
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Reviewed-by:|
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Reported-by:|
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Suggested-by:|
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To:|
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Cc:
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)};
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our @typeList = (
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qr{void},
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qr{(?:unsigned\s+)?char},
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qr{(?:unsigned\s+)?short},
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qr{(?:unsigned\s+)?int},
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qr{(?:unsigned\s+)?long},
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qr{(?:unsigned\s+)?long\s+int},
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qr{(?:unsigned\s+)?long\s+long},
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qr{(?:unsigned\s+)?long\s+long\s+int},
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qr{unsigned},
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qr{float},
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qr{double},
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qr{bool},
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qr{struct\s+$Ident},
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qr{union\s+$Ident},
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qr{enum\s+$Ident},
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qr{${Ident}_t},
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qr{${Ident}_handler},
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qr{${Ident}_handler_fn},
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);
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our @modifierList = (
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qr{fastcall},
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);
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our $allowed_asm_includes = qr{(?x:
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irq|
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memory
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)};
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# memory.h: ARM has a custom one
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sub build_types {
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my $mods = "(?x: \n" . join("|\n ", @modifierList) . "\n)";
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my $all = "(?x: \n" . join("|\n ", @typeList) . "\n)";
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$Modifier = qr{(?:$Attribute|$Sparse|$mods)};
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$NonptrType = qr{
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(?:$Modifier\s+|const\s+)*
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(?:
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(?:typeof|__typeof__)\s*\([^\)]*\)|
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(?:$typeTypedefs\b)|
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(?:${all}\b)
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)
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(?:\s+$Modifier|\s+const)*
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}x;
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$Type = qr{
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$NonptrType
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(?:(?:\s|\*|\[\])+\s*const|(?:\s|\*|\[\])+|(?:\s*\[\s*\])+)?
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(?:\s+$Inline|\s+$Modifier)*
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}x;
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$Declare = qr{(?:$Storage\s+)?$Type};
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}
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build_types();
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our $Typecast = qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
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# Using $balanced_parens, $LvalOrFunc, or $FuncArg
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# requires at least perl version v5.10.0
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# Any use must be runtime checked with $^V
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our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
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our $LvalOrFunc = qr{($Lval)\s*($balanced_parens{0,1})\s*};
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our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant)};
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sub deparenthesize {
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my ($string) = @_;
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return "" if (!defined($string));
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$string =~ s@^\s*\(\s*@@g;
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$string =~ s@\s*\)\s*$@@g;
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$string =~ s@\s+@ @g;
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return $string;
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}
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$chk_signoff = 0 if ($file);
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my @rawlines = ();
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my @lines = ();
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my $vname;
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for my $filename (@ARGV) {
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my $FILE;
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if ($file) {
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open($FILE, '-|', "diff -u /dev/null $filename") ||
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die "$P: $filename: diff failed - $!\n";
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} elsif ($filename eq '-') {
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open($FILE, '<&STDIN');
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} else {
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open($FILE, '<', "$filename") ||
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die "$P: $filename: open failed - $!\n";
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}
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if ($filename eq '-') {
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$vname = 'Your patch';
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} else {
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$vname = $filename;
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}
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while (<$FILE>) {
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chomp;
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push(@rawlines, $_);
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}
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close($FILE);
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if (!process($filename)) {
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$exit = 1;
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}
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@rawlines = ();
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@lines = ();
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}
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exit($exit);
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sub top_of_kernel_tree {
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my ($root) = @_;
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my @tree_check = (
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"COPYING", "CREDITS", "Kbuild", "MAINTAINERS", "Makefile",
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"README", "Documentation", "arch", "include", "drivers",
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"fs", "init", "ipc", "kernel", "lib", "scripts",
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);
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foreach my $check (@tree_check) {
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if (! -e $root . '/' . $check) {
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return 0;
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}
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}
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return 1;
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}
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sub parse_email {
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my ($formatted_email) = @_;
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my $name = "";
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my $address = "";
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my $comment = "";
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if ($formatted_email =~ /^(.*)<(\S+\@\S+)>(.*)$/) {
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$name = $1;
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$address = $2;
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$comment = $3 if defined $3;
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} elsif ($formatted_email =~ /^\s*<(\S+\@\S+)>(.*)$/) {
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$address = $1;
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$comment = $2 if defined $2;
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} elsif ($formatted_email =~ /(\S+\@\S+)(.*)$/) {
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$address = $1;
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$comment = $2 if defined $2;
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$formatted_email =~ s/$address.*$//;
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$name = $formatted_email;
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$name =~ s/^\s+|\s+$//g;
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$name =~ s/^\"|\"$//g;
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# If there's a name left after stripping spaces and
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# leading quotes, and the address doesn't have both
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# leading and trailing angle brackets, the address
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# is invalid. ie:
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# "joe smith joe@smith.com" bad
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# "joe smith <joe@smith.com" bad
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if ($name ne "" && $address !~ /^<[^>]+>$/) {
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$name = "";
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$address = "";
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$comment = "";
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}
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}
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$name =~ s/^\s+|\s+$//g;
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$name =~ s/^\"|\"$//g;
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$address =~ s/^\s+|\s+$//g;
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$address =~ s/^\<|\>$//g;
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if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
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$name =~ s/(?<!\\)"/\\"/g; ##escape quotes
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$name = "\"$name\"";
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}
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return ($name, $address, $comment);
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}
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sub format_email {
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my ($name, $address) = @_;
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my $formatted_email;
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$name =~ s/^\s+|\s+$//g;
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$name =~ s/^\"|\"$//g;
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$address =~ s/^\s+|\s+$//g;
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if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
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$name =~ s/(?<!\\)"/\\"/g; ##escape quotes
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$name = "\"$name\"";
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}
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if ("$name" eq "") {
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$formatted_email = "$address";
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} else {
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$formatted_email = "$name <$address>";
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}
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return $formatted_email;
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}
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sub which_conf {
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my ($conf) = @_;
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foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
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if (-e "$path/$conf") {
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return "$path/$conf";
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}
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}
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return "";
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}
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sub expand_tabs {
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my ($str) = @_;
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my $res = '';
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my $n = 0;
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for my $c (split(//, $str)) {
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if ($c eq "\t") {
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$res .= ' ';
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$n++;
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for (; ($n % 8) != 0; $n++) {
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$res .= ' ';
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}
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next;
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}
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$res .= $c;
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$n++;
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}
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return $res;
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}
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sub copy_spacing {
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(my $res = shift) =~ tr/\t/ /c;
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return $res;
|
|
}
|
|
|
|
sub line_stats {
|
|
my ($line) = @_;
|
|
|
|
# Drop the diff line leader and expand tabs
|
|
$line =~ s/^.//;
|
|
$line = expand_tabs($line);
|
|
|
|
# Pick the indent from the front of the line.
|
|
my ($white) = ($line =~ /^(\s*)/);
|
|
|
|
return (length($line), length($white));
|
|
}
|
|
|
|
my $sanitise_quote = '';
|
|
|
|
sub sanitise_line_reset {
|
|
my ($in_comment) = @_;
|
|
|
|
if ($in_comment) {
|
|
$sanitise_quote = '*/';
|
|
} else {
|
|
$sanitise_quote = '';
|
|
}
|
|
}
|
|
sub sanitise_line {
|
|
my ($line) = @_;
|
|
|
|
my $res = '';
|
|
my $l = '';
|
|
|
|
my $qlen = 0;
|
|
my $off = 0;
|
|
my $c;
|
|
|
|
# Always copy over the diff marker.
|
|
$res = substr($line, 0, 1);
|
|
|
|
for ($off = 1; $off < length($line); $off++) {
|
|
$c = substr($line, $off, 1);
|
|
|
|
# Comments we are wacking completly including the begin
|
|
# and end, all to $;.
|
|
if ($sanitise_quote eq '' && substr($line, $off, 2) eq '/*') {
|
|
$sanitise_quote = '*/';
|
|
|
|
substr($res, $off, 2, "$;$;");
|
|
$off++;
|
|
next;
|
|
}
|
|
if ($sanitise_quote eq '*/' && substr($line, $off, 2) eq '*/') {
|
|
$sanitise_quote = '';
|
|
substr($res, $off, 2, "$;$;");
|
|
$off++;
|
|
next;
|
|
}
|
|
if ($sanitise_quote eq '' && substr($line, $off, 2) eq '//') {
|
|
$sanitise_quote = '//';
|
|
|
|
substr($res, $off, 2, $sanitise_quote);
|
|
$off++;
|
|
next;
|
|
}
|
|
|
|
# A \ in a string means ignore the next character.
|
|
if (($sanitise_quote eq "'" || $sanitise_quote eq '"') &&
|
|
$c eq "\\") {
|
|
substr($res, $off, 2, 'XX');
|
|
$off++;
|
|
next;
|
|
}
|
|
# Regular quotes.
|
|
if ($c eq "'" || $c eq '"') {
|
|
if ($sanitise_quote eq '') {
|
|
$sanitise_quote = $c;
|
|
|
|
substr($res, $off, 1, $c);
|
|
next;
|
|
} elsif ($sanitise_quote eq $c) {
|
|
$sanitise_quote = '';
|
|
}
|
|
}
|
|
|
|
#print "c<$c> SQ<$sanitise_quote>\n";
|
|
if ($off != 0 && $sanitise_quote eq '*/' && $c ne "\t") {
|
|
substr($res, $off, 1, $;);
|
|
} elsif ($off != 0 && $sanitise_quote eq '//' && $c ne "\t") {
|
|
substr($res, $off, 1, $;);
|
|
} elsif ($off != 0 && $sanitise_quote && $c ne "\t") {
|
|
substr($res, $off, 1, 'X');
|
|
} else {
|
|
substr($res, $off, 1, $c);
|
|
}
|
|
}
|
|
|
|
if ($sanitise_quote eq '//') {
|
|
$sanitise_quote = '';
|
|
}
|
|
|
|
# The pathname on a #include may be surrounded by '<' and '>'.
|
|
if ($res =~ /^.\s*\#\s*include\s+\<(.*)\>/) {
|
|
my $clean = 'X' x length($1);
|
|
$res =~ s@\<.*\>@<$clean>@;
|
|
|
|
# The whole of a #error is a string.
|
|
} elsif ($res =~ /^.\s*\#\s*(?:error|warning)\s+(.*)\b/) {
|
|
my $clean = 'X' x length($1);
|
|
$res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@;
|
|
}
|
|
|
|
return $res;
|
|
}
|
|
|
|
sub get_quoted_string {
|
|
my ($line, $rawline) = @_;
|
|
|
|
return "" if ($line !~ m/(\"[X]+\")/g);
|
|
return substr($rawline, $-[0], $+[0] - $-[0]);
|
|
}
|
|
|
|
sub ctx_statement_block {
|
|
my ($linenr, $remain, $off) = @_;
|
|
my $line = $linenr - 1;
|
|
my $blk = '';
|
|
my $soff = $off;
|
|
my $coff = $off - 1;
|
|
my $coff_set = 0;
|
|
|
|
my $loff = 0;
|
|
|
|
my $type = '';
|
|
my $level = 0;
|
|
my @stack = ();
|
|
my $p;
|
|
my $c;
|
|
my $len = 0;
|
|
|
|
my $remainder;
|
|
while (1) {
|
|
@stack = (['', 0]) if ($#stack == -1);
|
|
|
|
#warn "CSB: blk<$blk> remain<$remain>\n";
|
|
# If we are about to drop off the end, pull in more
|
|
# context.
|
|
if ($off >= $len) {
|
|
for (; $remain > 0; $line++) {
|
|
last if (!defined $lines[$line]);
|
|
next if ($lines[$line] =~ /^-/);
|
|
$remain--;
|
|
$loff = $len;
|
|
$blk .= $lines[$line] . "\n";
|
|
$len = length($blk);
|
|
$line++;
|
|
last;
|
|
}
|
|
# Bail if there is no further context.
|
|
#warn "CSB: blk<$blk> off<$off> len<$len>\n";
|
|
if ($off >= $len) {
|
|
last;
|
|
}
|
|
if ($level == 0 && substr($blk, $off) =~ /^.\s*#\s*define/) {
|
|
$level++;
|
|
$type = '#';
|
|
}
|
|
}
|
|
$p = $c;
|
|
$c = substr($blk, $off, 1);
|
|
$remainder = substr($blk, $off);
|
|
|
|
#warn "CSB: c<$c> type<$type> level<$level> remainder<$remainder> coff_set<$coff_set>\n";
|
|
|
|
# Handle nested #if/#else.
|
|
if ($remainder =~ /^#\s*(?:ifndef|ifdef|if)\s/) {
|
|
push(@stack, [ $type, $level ]);
|
|
} elsif ($remainder =~ /^#\s*(?:else|elif)\b/) {
|
|
($type, $level) = @{$stack[$#stack - 1]};
|
|
} elsif ($remainder =~ /^#\s*endif\b/) {
|
|
($type, $level) = @{pop(@stack)};
|
|
}
|
|
|
|
# Statement ends at the ';' or a close '}' at the
|
|
# outermost level.
|
|
if ($level == 0 && $c eq ';') {
|
|
last;
|
|
}
|
|
|
|
# An else is really a conditional as long as its not else if
|
|
if ($level == 0 && $coff_set == 0 &&
|
|
(!defined($p) || $p =~ /(?:\s|\}|\+)/) &&
|
|
$remainder =~ /^(else)(?:\s|{)/ &&
|
|
$remainder !~ /^else\s+if\b/) {
|
|
$coff = $off + length($1) - 1;
|
|
$coff_set = 1;
|
|
#warn "CSB: mark coff<$coff> soff<$soff> 1<$1>\n";
|
|
#warn "[" . substr($blk, $soff, $coff - $soff + 1) . "]\n";
|
|
}
|
|
|
|
if (($type eq '' || $type eq '(') && $c eq '(') {
|
|
$level++;
|
|
$type = '(';
|
|
}
|
|
if ($type eq '(' && $c eq ')') {
|
|
$level--;
|
|
$type = ($level != 0)? '(' : '';
|
|
|
|
if ($level == 0 && $coff < $soff) {
|
|
$coff = $off;
|
|
$coff_set = 1;
|
|
#warn "CSB: mark coff<$coff>\n";
|
|
}
|
|
}
|
|
if (($type eq '' || $type eq '{') && $c eq '{') {
|
|
$level++;
|
|
$type = '{';
|
|
}
|
|
if ($type eq '{' && $c eq '}') {
|
|
$level--;
|
|
$type = ($level != 0)? '{' : '';
|
|
|
|
if ($level == 0) {
|
|
if (substr($blk, $off + 1, 1) eq ';') {
|
|
$off++;
|
|
}
|
|
last;
|
|
}
|
|
}
|
|
# Preprocessor commands end at the newline unless escaped.
|
|
if ($type eq '#' && $c eq "\n" && $p ne "\\") {
|
|
$level--;
|
|
$type = '';
|
|
$off++;
|
|
last;
|
|
}
|
|
$off++;
|
|
}
|
|
# We are truly at the end, so shuffle to the next line.
|
|
if ($off == $len) {
|
|
$loff = $len + 1;
|
|
$line++;
|
|
$remain--;
|
|
}
|
|
|
|
my $statement = substr($blk, $soff, $off - $soff + 1);
|
|
my $condition = substr($blk, $soff, $coff - $soff + 1);
|
|
|
|
#warn "STATEMENT<$statement>\n";
|
|
#warn "CONDITION<$condition>\n";
|
|
|
|
#print "coff<$coff> soff<$off> loff<$loff>\n";
|
|
|
|
return ($statement, $condition,
|
|
$line, $remain + 1, $off - $loff + 1, $level);
|
|
}
|
|
|
|
sub statement_lines {
|
|
my ($stmt) = @_;
|
|
|
|
# Strip the diff line prefixes and rip blank lines at start and end.
|
|
$stmt =~ s/(^|\n)./$1/g;
|
|
$stmt =~ s/^\s*//;
|
|
$stmt =~ s/\s*$//;
|
|
|
|
my @stmt_lines = ($stmt =~ /\n/g);
|
|
|
|
return $#stmt_lines + 2;
|
|
}
|
|
|
|
sub statement_rawlines {
|
|
my ($stmt) = @_;
|
|
|
|
my @stmt_lines = ($stmt =~ /\n/g);
|
|
|
|
return $#stmt_lines + 2;
|
|
}
|
|
|
|
sub statement_block_size {
|
|
my ($stmt) = @_;
|
|
|
|
$stmt =~ s/(^|\n)./$1/g;
|
|
$stmt =~ s/^\s*{//;
|
|
$stmt =~ s/}\s*$//;
|
|
$stmt =~ s/^\s*//;
|
|
$stmt =~ s/\s*$//;
|
|
|
|
my @stmt_lines = ($stmt =~ /\n/g);
|
|
my @stmt_statements = ($stmt =~ /;/g);
|
|
|
|
my $stmt_lines = $#stmt_lines + 2;
|
|
my $stmt_statements = $#stmt_statements + 1;
|
|
|
|
if ($stmt_lines > $stmt_statements) {
|
|
return $stmt_lines;
|
|
} else {
|
|
return $stmt_statements;
|
|
}
|
|
}
|
|
|
|
sub ctx_statement_full {
|
|
my ($linenr, $remain, $off) = @_;
|
|
my ($statement, $condition, $level);
|
|
|
|
my (@chunks);
|
|
|
|
# Grab the first conditional/block pair.
|
|
($statement, $condition, $linenr, $remain, $off, $level) =
|
|
ctx_statement_block($linenr, $remain, $off);
|
|
#print "F: c<$condition> s<$statement> remain<$remain>\n";
|
|
push(@chunks, [ $condition, $statement ]);
|
|
if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:if|else|do)\b/s)) {
|
|
return ($level, $linenr, @chunks);
|
|
}
|
|
|
|
# Pull in the following conditional/block pairs and see if they
|
|
# could continue the statement.
|
|
for (;;) {
|
|
($statement, $condition, $linenr, $remain, $off, $level) =
|
|
ctx_statement_block($linenr, $remain, $off);
|
|
#print "C: c<$condition> s<$statement> remain<$remain>\n";
|
|
last if (!($remain > 0 && $condition =~ /^(?:\s*\n[+-])*\s*(?:else|do)\b/s));
|
|
#print "C: push\n";
|
|
push(@chunks, [ $condition, $statement ]);
|
|
}
|
|
|
|
return ($level, $linenr, @chunks);
|
|
}
|
|
|
|
sub ctx_block_get {
|
|
my ($linenr, $remain, $outer, $open, $close, $off) = @_;
|
|
my $line;
|
|
my $start = $linenr - 1;
|
|
my $blk = '';
|
|
my @o;
|
|
my @c;
|
|
my @res = ();
|
|
|
|
my $level = 0;
|
|
my @stack = ($level);
|
|
for ($line = $start; $remain > 0; $line++) {
|
|
next if ($rawlines[$line] =~ /^-/);
|
|
$remain--;
|
|
|
|
$blk .= $rawlines[$line];
|
|
|
|
# Handle nested #if/#else.
|
|
if ($lines[$line] =~ /^.\s*#\s*(?:ifndef|ifdef|if)\s/) {
|
|
push(@stack, $level);
|
|
} elsif ($lines[$line] =~ /^.\s*#\s*(?:else|elif)\b/) {
|
|
$level = $stack[$#stack - 1];
|
|
} elsif ($lines[$line] =~ /^.\s*#\s*endif\b/) {
|
|
$level = pop(@stack);
|
|
}
|
|
|
|
foreach my $c (split(//, $lines[$line])) {
|
|
##print "C<$c>L<$level><$open$close>O<$off>\n";
|
|
if ($off > 0) {
|
|
$off--;
|
|
next;
|
|
}
|
|
|
|
if ($c eq $close && $level > 0) {
|
|
$level--;
|
|
last if ($level == 0);
|
|
} elsif ($c eq $open) {
|
|
$level++;
|
|
}
|
|
}
|
|
|
|
if (!$outer || $level <= 1) {
|
|
push(@res, $rawlines[$line]);
|
|
}
|
|
|
|
last if ($level == 0);
|
|
}
|
|
|
|
return ($level, @res);
|
|
}
|
|
sub ctx_block_outer {
|
|
my ($linenr, $remain) = @_;
|
|
|
|
my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0);
|
|
return @r;
|
|
}
|
|
sub ctx_block {
|
|
my ($linenr, $remain) = @_;
|
|
|
|
my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0);
|
|
return @r;
|
|
}
|
|
sub ctx_statement {
|
|
my ($linenr, $remain, $off) = @_;
|
|
|
|
my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off);
|
|
return @r;
|
|
}
|
|
sub ctx_block_level {
|
|
my ($linenr, $remain) = @_;
|
|
|
|
return ctx_block_get($linenr, $remain, 0, '{', '}', 0);
|
|
}
|
|
sub ctx_statement_level {
|
|
my ($linenr, $remain, $off) = @_;
|
|
|
|
return ctx_block_get($linenr, $remain, 0, '(', ')', $off);
|
|
}
|
|
|
|
sub ctx_locate_comment {
|
|
my ($first_line, $end_line) = @_;
|
|
|
|
# Catch a comment on the end of the line itself.
|
|
my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
|
|
return $current_comment if (defined $current_comment);
|
|
|
|
# Look through the context and try and figure out if there is a
|
|
# comment.
|
|
my $in_comment = 0;
|
|
$current_comment = '';
|
|
for (my $linenr = $first_line; $linenr < $end_line; $linenr++) {
|
|
my $line = $rawlines[$linenr - 1];
|
|
#warn " $line\n";
|
|
if ($linenr == $first_line and $line =~ m@^.\s*\*@) {
|
|
$in_comment = 1;
|
|
}
|
|
if ($line =~ m@/\*@) {
|
|
$in_comment = 1;
|
|
}
|
|
if (!$in_comment && $current_comment ne '') {
|
|
$current_comment = '';
|
|
}
|
|
$current_comment .= $line . "\n" if ($in_comment);
|
|
if ($line =~ m@\*/@) {
|
|
$in_comment = 0;
|
|
}
|
|
}
|
|
|
|
chomp($current_comment);
|
|
return($current_comment);
|
|
}
|
|
sub ctx_has_comment {
|
|
my ($first_line, $end_line) = @_;
|
|
my $cmt = ctx_locate_comment($first_line, $end_line);
|
|
|
|
##print "LINE: $rawlines[$end_line - 1 ]\n";
|
|
##print "CMMT: $cmt\n";
|
|
|
|
return ($cmt ne '');
|
|
}
|
|
|
|
sub raw_line {
|
|
my ($linenr, $cnt) = @_;
|
|
|
|
my $offset = $linenr - 1;
|
|
$cnt++;
|
|
|
|
my $line;
|
|
while ($cnt) {
|
|
$line = $rawlines[$offset++];
|
|
next if (defined($line) && $line =~ /^-/);
|
|
$cnt--;
|
|
}
|
|
|
|
return $line;
|
|
}
|
|
|
|
sub cat_vet {
|
|
my ($vet) = @_;
|
|
my ($res, $coded);
|
|
|
|
$res = '';
|
|
while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) {
|
|
$res .= $1;
|
|
if ($2 ne '') {
|
|
$coded = sprintf("^%c", unpack('C', $2) + 64);
|
|
$res .= $coded;
|
|
}
|
|
}
|
|
$res =~ s/$/\$/;
|
|
|
|
return $res;
|
|
}
|
|
|
|
my $av_preprocessor = 0;
|
|
my $av_pending;
|
|
my @av_paren_type;
|
|
my $av_pend_colon;
|
|
|
|
sub annotate_reset {
|
|
$av_preprocessor = 0;
|
|
$av_pending = '_';
|
|
@av_paren_type = ('E');
|
|
$av_pend_colon = 'O';
|
|
}
|
|
|
|
sub annotate_values {
|
|
my ($stream, $type) = @_;
|
|
|
|
my $res;
|
|
my $var = '_' x length($stream);
|
|
my $cur = $stream;
|
|
|
|
print "$stream\n" if ($dbg_values > 1);
|
|
|
|
while (length($cur)) {
|
|
@av_paren_type = ('E') if ($#av_paren_type < 0);
|
|
print " <" . join('', @av_paren_type) .
|
|
"> <$type> <$av_pending>" if ($dbg_values > 1);
|
|
if ($cur =~ /^(\s+)/o) {
|
|
print "WS($1)\n" if ($dbg_values > 1);
|
|
if ($1 =~ /\n/ && $av_preprocessor) {
|
|
$type = pop(@av_paren_type);
|
|
$av_preprocessor = 0;
|
|
}
|
|
|
|
} elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') {
|
|
print "CAST($1)\n" if ($dbg_values > 1);
|
|
push(@av_paren_type, $type);
|
|
$type = 'c';
|
|
|
|
} elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) {
|
|
print "DECLARE($1)\n" if ($dbg_values > 1);
|
|
$type = 'T';
|
|
|
|
} elsif ($cur =~ /^($Modifier)\s*/) {
|
|
print "MODIFIER($1)\n" if ($dbg_values > 1);
|
|
$type = 'T';
|
|
|
|
} elsif ($cur =~ /^(\#\s*define\s*$Ident)(\(?)/o) {
|
|
print "DEFINE($1,$2)\n" if ($dbg_values > 1);
|
|
$av_preprocessor = 1;
|
|
push(@av_paren_type, $type);
|
|
if ($2 ne '') {
|
|
$av_pending = 'N';
|
|
}
|
|
$type = 'E';
|
|
|
|
} elsif ($cur =~ /^(\#\s*(?:undef\s*$Ident|include\b))/o) {
|
|
print "UNDEF($1)\n" if ($dbg_values > 1);
|
|
$av_preprocessor = 1;
|
|
push(@av_paren_type, $type);
|
|
|
|
} elsif ($cur =~ /^(\#\s*(?:ifdef|ifndef|if))/o) {
|
|
print "PRE_START($1)\n" if ($dbg_values > 1);
|
|
$av_preprocessor = 1;
|
|
|
|
push(@av_paren_type, $type);
|
|
push(@av_paren_type, $type);
|
|
$type = 'E';
|
|
|
|
} elsif ($cur =~ /^(\#\s*(?:else|elif))/o) {
|
|
print "PRE_RESTART($1)\n" if ($dbg_values > 1);
|
|
$av_preprocessor = 1;
|
|
|
|
push(@av_paren_type, $av_paren_type[$#av_paren_type]);
|
|
|
|
$type = 'E';
|
|
|
|
} elsif ($cur =~ /^(\#\s*(?:endif))/o) {
|
|
print "PRE_END($1)\n" if ($dbg_values > 1);
|
|
|
|
$av_preprocessor = 1;
|
|
|
|
# Assume all arms of the conditional end as this
|
|
# one does, and continue as if the #endif was not here.
|
|
pop(@av_paren_type);
|
|
push(@av_paren_type, $type);
|
|
$type = 'E';
|
|
|
|
} elsif ($cur =~ /^(\\\n)/o) {
|
|
print "PRECONT($1)\n" if ($dbg_values > 1);
|
|
|
|
} elsif ($cur =~ /^(__attribute__)\s*\(?/o) {
|
|
print "ATTR($1)\n" if ($dbg_values > 1);
|
|
$av_pending = $type;
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(sizeof)\s*(\()?/o) {
|
|
print "SIZEOF($1)\n" if ($dbg_values > 1);
|
|
if (defined $2) {
|
|
$av_pending = 'V';
|
|
}
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(if|while|for)\b/o) {
|
|
print "COND($1)\n" if ($dbg_values > 1);
|
|
$av_pending = 'E';
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~/^(case)/o) {
|
|
print "CASE($1)\n" if ($dbg_values > 1);
|
|
$av_pend_colon = 'C';
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~/^(return|else|goto|typeof|__typeof__)\b/o) {
|
|
print "KEYWORD($1)\n" if ($dbg_values > 1);
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(\()/o) {
|
|
print "PAREN('$1')\n" if ($dbg_values > 1);
|
|
push(@av_paren_type, $av_pending);
|
|
$av_pending = '_';
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(\))/o) {
|
|
my $new_type = pop(@av_paren_type);
|
|
if ($new_type ne '_') {
|
|
$type = $new_type;
|
|
print "PAREN('$1') -> $type\n"
|
|
if ($dbg_values > 1);
|
|
} else {
|
|
print "PAREN('$1')\n" if ($dbg_values > 1);
|
|
}
|
|
|
|
} elsif ($cur =~ /^($Ident)\s*\(/o) {
|
|
print "FUNC($1)\n" if ($dbg_values > 1);
|
|
$type = 'V';
|
|
$av_pending = 'V';
|
|
|
|
} elsif ($cur =~ /^($Ident\s*):(?:\s*\d+\s*(,|=|;))?/) {
|
|
if (defined $2 && $type eq 'C' || $type eq 'T') {
|
|
$av_pend_colon = 'B';
|
|
} elsif ($type eq 'E') {
|
|
$av_pend_colon = 'L';
|
|
}
|
|
print "IDENT_COLON($1,$type>$av_pend_colon)\n" if ($dbg_values > 1);
|
|
$type = 'V';
|
|
|
|
} elsif ($cur =~ /^($Ident|$Constant)/o) {
|
|
print "IDENT($1)\n" if ($dbg_values > 1);
|
|
$type = 'V';
|
|
|
|
} elsif ($cur =~ /^($Assignment)/o) {
|
|
print "ASSIGN($1)\n" if ($dbg_values > 1);
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~/^(;|{|})/) {
|
|
print "END($1)\n" if ($dbg_values > 1);
|
|
$type = 'E';
|
|
$av_pend_colon = 'O';
|
|
|
|
} elsif ($cur =~/^(,)/) {
|
|
print "COMMA($1)\n" if ($dbg_values > 1);
|
|
$type = 'C';
|
|
|
|
} elsif ($cur =~ /^(\?)/o) {
|
|
print "QUESTION($1)\n" if ($dbg_values > 1);
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(:)/o) {
|
|
print "COLON($1,$av_pend_colon)\n" if ($dbg_values > 1);
|
|
|
|
substr($var, length($res), 1, $av_pend_colon);
|
|
if ($av_pend_colon eq 'C' || $av_pend_colon eq 'L') {
|
|
$type = 'E';
|
|
} else {
|
|
$type = 'N';
|
|
}
|
|
$av_pend_colon = 'O';
|
|
|
|
} elsif ($cur =~ /^(\[)/o) {
|
|
print "CLOSE($1)\n" if ($dbg_values > 1);
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) {
|
|
my $variant;
|
|
|
|
print "OPV($1)\n" if ($dbg_values > 1);
|
|
if ($type eq 'V') {
|
|
$variant = 'B';
|
|
} else {
|
|
$variant = 'U';
|
|
}
|
|
|
|
substr($var, length($res), 1, $variant);
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^($Operators)/o) {
|
|
print "OP($1)\n" if ($dbg_values > 1);
|
|
if ($1 ne '++' && $1 ne '--') {
|
|
$type = 'N';
|
|
}
|
|
|
|
} elsif ($cur =~ /(^.)/o) {
|
|
print "C($1)\n" if ($dbg_values > 1);
|
|
}
|
|
if (defined $1) {
|
|
$cur = substr($cur, length($1));
|
|
$res .= $type x length($1);
|
|
}
|
|
}
|
|
|
|
return ($res, $var);
|
|
}
|
|
|
|
sub possible {
|
|
my ($possible, $line) = @_;
|
|
my $notPermitted = qr{(?:
|
|
^(?:
|
|
$Modifier|
|
|
$Storage|
|
|
$Type|
|
|
DEFINE_\S+
|
|
)$|
|
|
^(?:
|
|
goto|
|
|
return|
|
|
case|
|
|
else|
|
|
asm|__asm__|
|
|
do|
|
|
\#|
|
|
\#\#|
|
|
)(?:\s|$)|
|
|
^(?:typedef|struct|enum)\b
|
|
)}x;
|
|
warn "CHECK<$possible> ($line)\n" if ($dbg_possible > 2);
|
|
if ($possible !~ $notPermitted) {
|
|
# Check for modifiers.
|
|
$possible =~ s/\s*$Storage\s*//g;
|
|
$possible =~ s/\s*$Sparse\s*//g;
|
|
if ($possible =~ /^\s*$/) {
|
|
|
|
} elsif ($possible =~ /\s/) {
|
|
$possible =~ s/\s*$Type\s*//g;
|
|
for my $modifier (split(' ', $possible)) {
|
|
if ($modifier !~ $notPermitted) {
|
|
warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible);
|
|
push(@modifierList, $modifier);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
warn "POSSIBLE: $possible ($line)\n" if ($dbg_possible);
|
|
push(@typeList, $possible);
|
|
}
|
|
build_types();
|
|
} else {
|
|
warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1);
|
|
}
|
|
}
|
|
|
|
my $prefix = '';
|
|
|
|
sub show_type {
|
|
return !defined $ignore_type{$_[0]};
|
|
}
|
|
|
|
sub report {
|
|
if (!show_type($_[1]) ||
|
|
(defined $tst_only && $_[2] !~ /\Q$tst_only\E/)) {
|
|
return 0;
|
|
}
|
|
my $line;
|
|
if ($show_types) {
|
|
$line = "$prefix$_[0]:$_[1]: $_[2]\n";
|
|
} else {
|
|
$line = "$prefix$_[0]: $_[2]\n";
|
|
}
|
|
$line = (split('\n', $line))[0] . "\n" if ($terse);
|
|
|
|
push(our @report, $line);
|
|
|
|
return 1;
|
|
}
|
|
sub report_dump {
|
|
our @report;
|
|
}
|
|
|
|
sub ERROR {
|
|
if (report("ERROR", $_[0], $_[1])) {
|
|
our $clean = 0;
|
|
our $cnt_error++;
|
|
}
|
|
}
|
|
sub WARN {
|
|
if (report("WARNING", $_[0], $_[1])) {
|
|
our $clean = 0;
|
|
our $cnt_warn++;
|
|
}
|
|
}
|
|
sub CHK {
|
|
if ($check && report("CHECK", $_[0], $_[1])) {
|
|
our $clean = 0;
|
|
our $cnt_chk++;
|
|
}
|
|
}
|
|
|
|
sub check_absolute_file {
|
|
my ($absolute, $herecurr) = @_;
|
|
my $file = $absolute;
|
|
|
|
##print "absolute<$absolute>\n";
|
|
|
|
# See if any suffix of this path is a path within the tree.
|
|
while ($file =~ s@^[^/]*/@@) {
|
|
if (-f "$root/$file") {
|
|
##print "file<$file>\n";
|
|
last;
|
|
}
|
|
}
|
|
if (! -f _) {
|
|
return 0;
|
|
}
|
|
|
|
# It is, so see if the prefix is acceptable.
|
|
my $prefix = $absolute;
|
|
substr($prefix, -length($file)) = '';
|
|
|
|
##print "prefix<$prefix>\n";
|
|
if ($prefix ne ".../") {
|
|
WARN("USE_RELATIVE_PATH",
|
|
"use relative pathname instead of absolute in changelog text\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
sub pos_last_openparen {
|
|
my ($line) = @_;
|
|
|
|
my $pos = 0;
|
|
|
|
my $opens = $line =~ tr/\(/\(/;
|
|
my $closes = $line =~ tr/\)/\)/;
|
|
|
|
my $last_openparen = 0;
|
|
|
|
if (($opens == 0) || ($closes >= $opens)) {
|
|
return -1;
|
|
}
|
|
|
|
my $len = length($line);
|
|
|
|
for ($pos = 0; $pos < $len; $pos++) {
|
|
my $string = substr($line, $pos);
|
|
if ($string =~ /^($FuncArg|$balanced_parens)/) {
|
|
$pos += length($1) - 1;
|
|
} elsif (substr($line, $pos, 1) eq '(') {
|
|
$last_openparen = $pos;
|
|
} elsif (index($string, '(') == -1) {
|
|
last;
|
|
}
|
|
}
|
|
|
|
return $last_openparen + 1;
|
|
}
|
|
|
|
sub process {
|
|
my $filename = shift;
|
|
|
|
my $linenr=0;
|
|
my $prevline="";
|
|
my $prevrawline="";
|
|
my $stashline="";
|
|
my $stashrawline="";
|
|
|
|
my $length;
|
|
my $indent;
|
|
my $previndent=0;
|
|
my $stashindent=0;
|
|
|
|
our $clean = 1;
|
|
my $signoff = 0;
|
|
my $is_patch = 0;
|
|
|
|
my $in_header_lines = 1;
|
|
my $in_commit_log = 0; #Scanning lines before patch
|
|
|
|
my $non_utf8_charset = 0;
|
|
|
|
our @report = ();
|
|
our $cnt_lines = 0;
|
|
our $cnt_error = 0;
|
|
our $cnt_warn = 0;
|
|
our $cnt_chk = 0;
|
|
|
|
# Trace the real file/line as we go.
|
|
my $realfile = '';
|
|
my $realline = 0;
|
|
my $realcnt = 0;
|
|
my $here = '';
|
|
my $in_comment = 0;
|
|
my $comment_edge = 0;
|
|
my $first_line = 0;
|
|
my $p1_prefix = '';
|
|
|
|
my $prev_values = 'E';
|
|
|
|
# suppression flags
|
|
my %suppress_ifbraces;
|
|
my %suppress_whiletrailers;
|
|
my %suppress_export;
|
|
my $suppress_statement = 0;
|
|
|
|
my %camelcase = ();
|
|
|
|
# Pre-scan the patch sanitizing the lines.
|
|
# Pre-scan the patch looking for any __setup documentation.
|
|
#
|
|
my @setup_docs = ();
|
|
my $setup_docs = 0;
|
|
|
|
sanitise_line_reset();
|
|
my $line;
|
|
foreach my $rawline (@rawlines) {
|
|
$linenr++;
|
|
$line = $rawline;
|
|
|
|
if ($rawline=~/^\+\+\+\s+(\S+)/) {
|
|
$setup_docs = 0;
|
|
if ($1 =~ m@Documentation/kernel-parameters.txt$@) {
|
|
$setup_docs = 1;
|
|
}
|
|
#next;
|
|
}
|
|
if ($rawline=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
|
|
$realline=$1-1;
|
|
if (defined $2) {
|
|
$realcnt=$3+1;
|
|
} else {
|
|
$realcnt=1+1;
|
|
}
|
|
$in_comment = 0;
|
|
|
|
# Guestimate if this is a continuing comment. Run
|
|
# the context looking for a comment "edge". If this
|
|
# edge is a close comment then we must be in a comment
|
|
# at context start.
|
|
my $edge;
|
|
my $cnt = $realcnt;
|
|
for (my $ln = $linenr + 1; $cnt > 0; $ln++) {
|
|
next if (defined $rawlines[$ln - 1] &&
|
|
$rawlines[$ln - 1] =~ /^-/);
|
|
$cnt--;
|
|
#print "RAW<$rawlines[$ln - 1]>\n";
|
|
last if (!defined $rawlines[$ln - 1]);
|
|
if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ &&
|
|
$rawlines[$ln - 1] !~ m@"[^"]*(?:/\*|\*/)[^"]*"@) {
|
|
($edge) = $1;
|
|
last;
|
|
}
|
|
}
|
|
if (defined $edge && $edge eq '*/') {
|
|
$in_comment = 1;
|
|
}
|
|
|
|
# Guestimate if this is a continuing comment. If this
|
|
# is the start of a diff block and this line starts
|
|
# ' *' then it is very likely a comment.
|
|
if (!defined $edge &&
|
|
$rawlines[$linenr] =~ m@^.\s*(?:\*\*+| \*)(?:\s|$)@)
|
|
{
|
|
$in_comment = 1;
|
|
}
|
|
|
|
##print "COMMENT:$in_comment edge<$edge> $rawline\n";
|
|
sanitise_line_reset($in_comment);
|
|
|
|
} elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) {
|
|
# Standardise the strings and chars within the input to
|
|
# simplify matching -- only bother with positive lines.
|
|
$line = sanitise_line($rawline);
|
|
}
|
|
push(@lines, $line);
|
|
|
|
if ($realcnt > 1) {
|
|
$realcnt-- if ($line =~ /^(?:\+| |$)/);
|
|
} else {
|
|
$realcnt = 0;
|
|
}
|
|
|
|
#print "==>$rawline\n";
|
|
#print "-->$line\n";
|
|
|
|
if ($setup_docs && $line =~ /^\+/) {
|
|
push(@setup_docs, $line);
|
|
}
|
|
}
|
|
|
|
$prefix = '';
|
|
|
|
$realcnt = 0;
|
|
$linenr = 0;
|
|
foreach my $line (@lines) {
|
|
$linenr++;
|
|
|
|
my $rawline = $rawlines[$linenr - 1];
|
|
|
|
#extract the line range in the file after the patch is applied
|
|
if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
|
|
$is_patch = 1;
|
|
$first_line = $linenr + 1;
|
|
$realline=$1-1;
|
|
if (defined $2) {
|
|
$realcnt=$3+1;
|
|
} else {
|
|
$realcnt=1+1;
|
|
}
|
|
annotate_reset();
|
|
$prev_values = 'E';
|
|
|
|
%suppress_ifbraces = ();
|
|
%suppress_whiletrailers = ();
|
|
%suppress_export = ();
|
|
$suppress_statement = 0;
|
|
next;
|
|
|
|
# track the line number as we move through the hunk, note that
|
|
# new versions of GNU diff omit the leading space on completely
|
|
# blank context lines so we need to count that too.
|
|
} elsif ($line =~ /^( |\+|$)/) {
|
|
$realline++;
|
|
$realcnt-- if ($realcnt != 0);
|
|
|
|
# Measure the line length and indent.
|
|
($length, $indent) = line_stats($rawline);
|
|
|
|
# Track the previous line.
|
|
($prevline, $stashline) = ($stashline, $line);
|
|
($previndent, $stashindent) = ($stashindent, $indent);
|
|
($prevrawline, $stashrawline) = ($stashrawline, $rawline);
|
|
|
|
#warn "line<$line>\n";
|
|
|
|
} elsif ($realcnt == 1) {
|
|
$realcnt--;
|
|
}
|
|
|
|
my $hunk_line = ($realcnt != 0);
|
|
|
|
#make up the handle for any error we report on this line
|
|
$prefix = "$filename:$realline: " if ($emacs && $file);
|
|
$prefix = "$filename:$linenr: " if ($emacs && !$file);
|
|
|
|
$here = "#$linenr: " if (!$file);
|
|
$here = "#$realline: " if ($file);
|
|
|
|
# extract the filename as it passes
|
|
if ($line =~ /^diff --git.*?(\S+)$/) {
|
|
$realfile = $1;
|
|
$realfile =~ s@^([^/]*)/@@;
|
|
$in_commit_log = 0;
|
|
} elsif ($line =~ /^\+\+\+\s+(\S+)/) {
|
|
$realfile = $1;
|
|
$realfile =~ s@^([^/]*)/@@;
|
|
$in_commit_log = 0;
|
|
|
|
$p1_prefix = $1;
|
|
if (!$file && $tree && $p1_prefix ne '' &&
|
|
-e "$root/$p1_prefix") {
|
|
WARN("PATCH_PREFIX",
|
|
"patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
|
|
}
|
|
|
|
if ($realfile =~ m@^include/asm/@) {
|
|
ERROR("MODIFIED_INCLUDE_ASM",
|
|
"do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
|
|
}
|
|
next;
|
|
}
|
|
|
|
$here .= "FILE: $realfile:$realline:" if ($realcnt != 0);
|
|
|
|
my $hereline = "$here\n$rawline\n";
|
|
my $herecurr = "$here\n$rawline\n";
|
|
my $hereprev = "$here\n$prevrawline\n$rawline\n";
|
|
|
|
$cnt_lines++ if ($realcnt != 0);
|
|
|
|
# Check for incorrect file permissions
|
|
if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) {
|
|
my $permhere = $here . "FILE: $realfile\n";
|
|
if ($realfile !~ m@scripts/@ &&
|
|
$realfile !~ /\.(py|pl|awk|sh)$/) {
|
|
ERROR("EXECUTE_PERMISSIONS",
|
|
"do not set execute permissions for source files\n" . $permhere);
|
|
}
|
|
}
|
|
|
|
# Check the patch for a signoff:
|
|
if ($line =~ /^\s*signed-off-by:/i) {
|
|
$signoff++;
|
|
$in_commit_log = 0;
|
|
}
|
|
|
|
# Check signature styles
|
|
if (!$in_header_lines &&
|
|
$line =~ /^(\s*)([a-z0-9_-]+by:|$signature_tags)(\s*)(.*)/i) {
|
|
my $space_before = $1;
|
|
my $sign_off = $2;
|
|
my $space_after = $3;
|
|
my $email = $4;
|
|
my $ucfirst_sign_off = ucfirst(lc($sign_off));
|
|
|
|
if ($sign_off !~ /$signature_tags/) {
|
|
WARN("BAD_SIGN_OFF",
|
|
"Non-standard signature: $sign_off\n" . $herecurr);
|
|
}
|
|
if (defined $space_before && $space_before ne "") {
|
|
WARN("BAD_SIGN_OFF",
|
|
"Do not use whitespace before $ucfirst_sign_off\n" . $herecurr);
|
|
}
|
|
if ($sign_off =~ /-by:$/i && $sign_off ne $ucfirst_sign_off) {
|
|
WARN("BAD_SIGN_OFF",
|
|
"'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr);
|
|
}
|
|
if (!defined $space_after || $space_after ne " ") {
|
|
WARN("BAD_SIGN_OFF",
|
|
"Use a single space after $ucfirst_sign_off\n" . $herecurr);
|
|
}
|
|
|
|
my ($email_name, $email_address, $comment) = parse_email($email);
|
|
my $suggested_email = format_email(($email_name, $email_address));
|
|
if ($suggested_email eq "") {
|
|
ERROR("BAD_SIGN_OFF",
|
|
"Unrecognized email address: '$email'\n" . $herecurr);
|
|
} else {
|
|
my $dequoted = $suggested_email;
|
|
$dequoted =~ s/^"//;
|
|
$dequoted =~ s/" </ </;
|
|
# Don't force email to have quotes
|
|
# Allow just an angle bracketed address
|
|
if ("$dequoted$comment" ne $email &&
|
|
"<$email_address>$comment" ne $email &&
|
|
"$suggested_email$comment" ne $email) {
|
|
WARN("BAD_SIGN_OFF",
|
|
"email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
|
|
}
|
|
}
|
|
}
|
|
|
|
# Check for wrappage within a valid hunk of the file
|
|
if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
|
|
ERROR("CORRUPTED_PATCH",
|
|
"patch seems to be corrupt (line wrapped?)\n" .
|
|
$herecurr) if (!$emitted_corrupt++);
|
|
}
|
|
|
|
# Check for absolute kernel paths.
|
|
if ($tree) {
|
|
while ($line =~ m{(?:^|\s)(/\S*)}g) {
|
|
my $file = $1;
|
|
|
|
if ($file =~ m{^(.*?)(?::\d+)+:?$} &&
|
|
check_absolute_file($1, $herecurr)) {
|
|
#
|
|
} else {
|
|
check_absolute_file($file, $herecurr);
|
|
}
|
|
}
|
|
}
|
|
|
|
# UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php
|
|
if (($realfile =~ /^$/ || $line =~ /^\+/) &&
|
|
$rawline !~ m/^$UTF8*$/) {
|
|
my ($utf8_prefix) = ($rawline =~ /^($UTF8*)/);
|
|
|
|
my $blank = copy_spacing($rawline);
|
|
my $ptr = substr($blank, 0, length($utf8_prefix)) . "^";
|
|
my $hereptr = "$hereline$ptr\n";
|
|
|
|
CHK("INVALID_UTF8",
|
|
"Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
|
|
}
|
|
|
|
# Check if it's the start of a commit log
|
|
# (not a header line and we haven't seen the patch filename)
|
|
if ($in_header_lines && $realfile =~ /^$/ &&
|
|
$rawline !~ /^(commit\b|from\b|[\w-]+:).+$/i) {
|
|
$in_header_lines = 0;
|
|
$in_commit_log = 1;
|
|
}
|
|
|
|
# Check if there is UTF-8 in a commit log when a mail header has explicitly
|
|
# declined it, i.e defined some charset where it is missing.
|
|
if ($in_header_lines &&
|
|
$rawline =~ /^Content-Type:.+charset="(.+)".*$/ &&
|
|
$1 !~ /utf-8/i) {
|
|
$non_utf8_charset = 1;
|
|
}
|
|
|
|
if ($in_commit_log && $non_utf8_charset && $realfile =~ /^$/ &&
|
|
$rawline =~ /$NON_ASCII_UTF8/) {
|
|
WARN("UTF8_BEFORE_PATCH",
|
|
"8-bit UTF-8 used in possible commit log\n" . $herecurr);
|
|
}
|
|
|
|
# ignore non-hunk lines and lines being removed
|
|
next if (!$hunk_line || $line =~ /^-/);
|
|
|
|
#trailing whitespace
|
|
if ($line =~ /^\+.*\015/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
ERROR("DOS_LINE_ENDINGS",
|
|
"DOS line endings\n" . $herevet);
|
|
|
|
} elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
ERROR("TRAILING_WHITESPACE",
|
|
"trailing whitespace\n" . $herevet);
|
|
$rpt_cleaners = 1;
|
|
}
|
|
|
|
# check for Kconfig help text having a real description
|
|
# Only applies when adding the entry originally, after that we do not have
|
|
# sufficient context to determine whether it is indeed long enough.
|
|
if ($realfile =~ /Kconfig/ &&
|
|
$line =~ /.\s*config\s+/) {
|
|
my $length = 0;
|
|
my $cnt = $realcnt;
|
|
my $ln = $linenr + 1;
|
|
my $f;
|
|
my $is_start = 0;
|
|
my $is_end = 0;
|
|
for (; $cnt > 0 && defined $lines[$ln - 1]; $ln++) {
|
|
$f = $lines[$ln - 1];
|
|
$cnt-- if ($lines[$ln - 1] !~ /^-/);
|
|
$is_end = $lines[$ln - 1] =~ /^\+/;
|
|
|
|
next if ($f =~ /^-/);
|
|
|
|
if ($lines[$ln - 1] =~ /.\s*(?:bool|tristate)\s*\"/) {
|
|
$is_start = 1;
|
|
} elsif ($lines[$ln - 1] =~ /.\s*(?:---)?help(?:---)?$/) {
|
|
$length = -1;
|
|
}
|
|
|
|
$f =~ s/^.//;
|
|
$f =~ s/#.*//;
|
|
$f =~ s/^\s+//;
|
|
next if ($f =~ /^$/);
|
|
if ($f =~ /^\s*config\s/) {
|
|
$is_end = 1;
|
|
last;
|
|
}
|
|
$length++;
|
|
}
|
|
WARN("CONFIG_DESCRIPTION",
|
|
"please write a paragraph that describes the config symbol fully\n" . $herecurr) if ($is_start && $is_end && $length < 4);
|
|
#print "is_start<$is_start> is_end<$is_end> length<$length>\n";
|
|
}
|
|
|
|
# discourage the addition of CONFIG_EXPERIMENTAL in Kconfig.
|
|
if ($realfile =~ /Kconfig/ &&
|
|
$line =~ /.\s*depends on\s+.*\bEXPERIMENTAL\b/) {
|
|
WARN("CONFIG_EXPERIMENTAL",
|
|
"Use of CONFIG_EXPERIMENTAL is deprecated. For alternatives, see https://lkml.org/lkml/2012/10/23/580\n");
|
|
}
|
|
|
|
if (($realfile =~ /Makefile.*/ || $realfile =~ /Kbuild.*/) &&
|
|
($line =~ /\+(EXTRA_[A-Z]+FLAGS).*/)) {
|
|
my $flag = $1;
|
|
my $replacement = {
|
|
'EXTRA_AFLAGS' => 'asflags-y',
|
|
'EXTRA_CFLAGS' => 'ccflags-y',
|
|
'EXTRA_CPPFLAGS' => 'cppflags-y',
|
|
'EXTRA_LDFLAGS' => 'ldflags-y',
|
|
};
|
|
|
|
WARN("DEPRECATED_VARIABLE",
|
|
"Use of $flag is deprecated, please use \`$replacement->{$flag} instead.\n" . $herecurr) if ($replacement->{$flag});
|
|
}
|
|
|
|
# check we are in a valid source file if not then ignore this hunk
|
|
next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
|
|
|
|
#line length limit
|
|
if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ &&
|
|
$rawline !~ /^.\s*\*\s*\@$Ident\s/ &&
|
|
!($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:|,|\)\s*;)\s*$/ ||
|
|
$line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
|
|
$length > $max_line_length)
|
|
{
|
|
WARN("LONG_LINE",
|
|
"line over $max_line_length characters\n" . $herecurr);
|
|
}
|
|
|
|
# Check for user-visible strings broken across lines, which breaks the ability
|
|
# to grep for the string. Limited to strings used as parameters (those
|
|
# following an open parenthesis), which almost completely eliminates false
|
|
# positives, as well as warning only once per parameter rather than once per
|
|
# line of the string. Make an exception when the previous string ends in a
|
|
# newline (multiple lines in one string constant) or \n\t (common in inline
|
|
# assembly to indent the instruction on the following line).
|
|
if ($line =~ /^\+\s*"/ &&
|
|
$prevline =~ /"\s*$/ &&
|
|
$prevline =~ /\(/ &&
|
|
$prevrawline !~ /\\n(?:\\t)*"\s*$/) {
|
|
WARN("SPLIT_STRING",
|
|
"quoted string split across lines\n" . $hereprev);
|
|
}
|
|
|
|
# check for spaces before a quoted newline
|
|
if ($rawline =~ /^.*\".*\s\\n/) {
|
|
WARN("QUOTED_WHITESPACE_BEFORE_NEWLINE",
|
|
"unnecessary whitespace before a quoted newline\n" . $herecurr);
|
|
}
|
|
|
|
# check for adding lines without a newline.
|
|
if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) {
|
|
WARN("MISSING_EOF_NEWLINE",
|
|
"adding a line without newline at end of file\n" . $herecurr);
|
|
}
|
|
|
|
# Blackfin: use hi/lo macros
|
|
if ($realfile =~ m@arch/blackfin/.*\.S$@) {
|
|
if ($line =~ /\.[lL][[:space:]]*=.*&[[:space:]]*0x[fF][fF][fF][fF]/) {
|
|
my $herevet = "$here\n" . cat_vet($line) . "\n";
|
|
ERROR("LO_MACRO",
|
|
"use the LO() macro, not (... & 0xFFFF)\n" . $herevet);
|
|
}
|
|
if ($line =~ /\.[hH][[:space:]]*=.*>>[[:space:]]*16/) {
|
|
my $herevet = "$here\n" . cat_vet($line) . "\n";
|
|
ERROR("HI_MACRO",
|
|
"use the HI() macro, not (... >> 16)\n" . $herevet);
|
|
}
|
|
}
|
|
|
|
# check we are in a valid source file C or perl if not then ignore this hunk
|
|
next if ($realfile !~ /\.(h|c|pl)$/);
|
|
|
|
# at the beginning of a line any tabs must come first and anything
|
|
# more than 8 must use tabs.
|
|
if ($rawline =~ /^\+\s* \t\s*\S/ ||
|
|
$rawline =~ /^\+\s* \s*/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
ERROR("CODE_INDENT",
|
|
"code indent should use tabs where possible\n" . $herevet);
|
|
$rpt_cleaners = 1;
|
|
}
|
|
|
|
# check for space before tabs.
|
|
if ($rawline =~ /^\+/ && $rawline =~ / \t/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
WARN("SPACE_BEFORE_TAB",
|
|
"please, no space before tabs\n" . $herevet);
|
|
}
|
|
|
|
# check for && or || at the start of a line
|
|
if ($rawline =~ /^\+\s*(&&|\|\|)/) {
|
|
CHK("LOGICAL_CONTINUATIONS",
|
|
"Logical continuations should be on the previous line\n" . $hereprev);
|
|
}
|
|
|
|
# check multi-line statement indentation matches previous line
|
|
if ($^V && $^V ge 5.10.0 &&
|
|
$prevline =~ /^\+(\t*)(if \(|$Ident\().*(\&\&|\|\||,)\s*$/) {
|
|
$prevline =~ /^\+(\t*)(.*)$/;
|
|
my $oldindent = $1;
|
|
my $rest = $2;
|
|
|
|
my $pos = pos_last_openparen($rest);
|
|
if ($pos >= 0) {
|
|
$line =~ /^(\+| )([ \t]*)/;
|
|
my $newindent = $2;
|
|
|
|
my $goodtabindent = $oldindent .
|
|
"\t" x ($pos / 8) .
|
|
" " x ($pos % 8);
|
|
my $goodspaceindent = $oldindent . " " x $pos;
|
|
|
|
if ($newindent ne $goodtabindent &&
|
|
$newindent ne $goodspaceindent) {
|
|
CHK("PARENTHESIS_ALIGNMENT",
|
|
"Alignment should match open parenthesis\n" . $hereprev);
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($line =~ /^\+.*\*[ \t]*\)[ \t]+/) {
|
|
CHK("SPACING",
|
|
"No space is necessary after a cast\n" . $hereprev);
|
|
}
|
|
|
|
if ($realfile =~ m@^(drivers/net/|net/)@ &&
|
|
$rawline =~ /^\+[ \t]*\/\*[ \t]*$/ &&
|
|
$prevrawline =~ /^\+[ \t]*$/) {
|
|
WARN("NETWORKING_BLOCK_COMMENT_STYLE",
|
|
"networking block comments don't use an empty /* line, use /* Comment...\n" . $hereprev);
|
|
}
|
|
|
|
if ($realfile =~ m@^(drivers/net/|net/)@ &&
|
|
$rawline !~ m@^\+[ \t]*\*/[ \t]*$@ && #trailing */
|
|
$rawline !~ m@^\+.*/\*.*\*/[ \t]*$@ && #inline /*...*/
|
|
$rawline !~ m@^\+.*\*{2,}/[ \t]*$@ && #trailing **/
|
|
$rawline =~ m@^\+[ \t]*.+\*\/[ \t]*$@) { #non blank */
|
|
WARN("NETWORKING_BLOCK_COMMENT_STYLE",
|
|
"networking block comments put the trailing */ on a separate line\n" . $herecurr);
|
|
}
|
|
|
|
# check for spaces at the beginning of a line.
|
|
# Exceptions:
|
|
# 1) within comments
|
|
# 2) indented preprocessor commands
|
|
# 3) hanging labels
|
|
if ($rawline =~ /^\+ / && $line !~ /\+ *(?:$;|#|$Ident:)/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
WARN("LEADING_SPACE",
|
|
"please, no spaces at the start of a line\n" . $herevet);
|
|
}
|
|
|
|
# check we are in a valid C source file if not then ignore this hunk
|
|
next if ($realfile !~ /\.(h|c)$/);
|
|
|
|
# discourage the addition of CONFIG_EXPERIMENTAL in #if(def).
|
|
if ($line =~ /^\+\s*\#\s*if.*\bCONFIG_EXPERIMENTAL\b/) {
|
|
WARN("CONFIG_EXPERIMENTAL",
|
|
"Use of CONFIG_EXPERIMENTAL is deprecated. For alternatives, see https://lkml.org/lkml/2012/10/23/580\n");
|
|
}
|
|
|
|
# check for RCS/CVS revision markers
|
|
if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) {
|
|
WARN("CVS_KEYWORD",
|
|
"CVS style keyword markers, these will _not_ be updated\n". $herecurr);
|
|
}
|
|
|
|
# Blackfin: don't use __builtin_bfin_[cs]sync
|
|
if ($line =~ /__builtin_bfin_csync/) {
|
|
my $herevet = "$here\n" . cat_vet($line) . "\n";
|
|
ERROR("CSYNC",
|
|
"use the CSYNC() macro in asm/blackfin.h\n" . $herevet);
|
|
}
|
|
if ($line =~ /__builtin_bfin_ssync/) {
|
|
my $herevet = "$here\n" . cat_vet($line) . "\n";
|
|
ERROR("SSYNC",
|
|
"use the SSYNC() macro in asm/blackfin.h\n" . $herevet);
|
|
}
|
|
|
|
# check for old HOTPLUG __dev<foo> section markings
|
|
if ($line =~ /\b(__dev(init|exit)(data|const|))\b/) {
|
|
WARN("HOTPLUG_SECTION",
|
|
"Using $1 is unnecessary\n" . $herecurr);
|
|
}
|
|
|
|
# Check for potential 'bare' types
|
|
my ($stat, $cond, $line_nr_next, $remain_next, $off_next,
|
|
$realline_next);
|
|
#print "LINE<$line>\n";
|
|
if ($linenr >= $suppress_statement &&
|
|
$realcnt && $line =~ /.\s*\S/) {
|
|
($stat, $cond, $line_nr_next, $remain_next, $off_next) =
|
|
ctx_statement_block($linenr, $realcnt, 0);
|
|
$stat =~ s/\n./\n /g;
|
|
$cond =~ s/\n./\n /g;
|
|
|
|
#print "linenr<$linenr> <$stat>\n";
|
|
# If this statement has no statement boundaries within
|
|
# it there is no point in retrying a statement scan
|
|
# until we hit end of it.
|
|
my $frag = $stat; $frag =~ s/;+\s*$//;
|
|
if ($frag !~ /(?:{|;)/) {
|
|
#print "skip<$line_nr_next>\n";
|
|
$suppress_statement = $line_nr_next;
|
|
}
|
|
|
|
# Find the real next line.
|
|
$realline_next = $line_nr_next;
|
|
if (defined $realline_next &&
|
|
(!defined $lines[$realline_next - 1] ||
|
|
substr($lines[$realline_next - 1], $off_next) =~ /^\s*$/)) {
|
|
$realline_next++;
|
|
}
|
|
|
|
my $s = $stat;
|
|
$s =~ s/{.*$//s;
|
|
|
|
# Ignore goto labels.
|
|
if ($s =~ /$Ident:\*$/s) {
|
|
|
|
# Ignore functions being called
|
|
} elsif ($s =~ /^.\s*$Ident\s*\(/s) {
|
|
|
|
} elsif ($s =~ /^.\s*else\b/s) {
|
|
|
|
# declarations always start with types
|
|
} elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?((?:\s*$Ident)+?)\b(?:\s+$Sparse)?\s*\**\s*(?:$Ident|\(\*[^\)]*\))(?:\s*$Modifier)?\s*(?:;|=|,|\()/s) {
|
|
my $type = $1;
|
|
$type =~ s/\s+/ /g;
|
|
possible($type, "A:" . $s);
|
|
|
|
# definitions in global scope can only start with types
|
|
} elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b\s*(?!:)/s) {
|
|
possible($1, "B:" . $s);
|
|
}
|
|
|
|
# any (foo ... *) is a pointer cast, and foo is a type
|
|
while ($s =~ /\(($Ident)(?:\s+$Sparse)*[\s\*]+\s*\)/sg) {
|
|
possible($1, "C:" . $s);
|
|
}
|
|
|
|
# Check for any sort of function declaration.
|
|
# int foo(something bar, other baz);
|
|
# void (*store_gdt)(x86_descr_ptr *);
|
|
if ($prev_values eq 'E' && $s =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/s) {
|
|
my ($name_len) = length($1);
|
|
|
|
my $ctx = $s;
|
|
substr($ctx, 0, $name_len + 1, '');
|
|
$ctx =~ s/\)[^\)]*$//;
|
|
|
|
for my $arg (split(/\s*,\s*/, $ctx)) {
|
|
if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/s || $arg =~ /^($Ident)$/s) {
|
|
|
|
possible($1, "D:" . $s);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#
|
|
# Checks which may be anchored in the context.
|
|
#
|
|
|
|
# Check for switch () and associated case and default
|
|
# statements should be at the same indent.
|
|
if ($line=~/\bswitch\s*\(.*\)/) {
|
|
my $err = '';
|
|
my $sep = '';
|
|
my @ctx = ctx_block_outer($linenr, $realcnt);
|
|
shift(@ctx);
|
|
for my $ctx (@ctx) {
|
|
my ($clen, $cindent) = line_stats($ctx);
|
|
if ($ctx =~ /^\+\s*(case\s+|default:)/ &&
|
|
$indent != $cindent) {
|
|
$err .= "$sep$ctx\n";
|
|
$sep = '';
|
|
} else {
|
|
$sep = "[...]\n";
|
|
}
|
|
}
|
|
if ($err ne '') {
|
|
ERROR("SWITCH_CASE_INDENT_LEVEL",
|
|
"switch and case should be at the same indent\n$hereline$err");
|
|
}
|
|
}
|
|
|
|
# if/while/etc brace do not go on next line, unless defining a do while loop,
|
|
# or if that brace on the next line is for something else
|
|
if ($line =~ /(.*)\b((?:if|while|for|switch)\s*\(|do\b|else\b)/ && $line !~ /^.\s*\#/) {
|
|
my $pre_ctx = "$1$2";
|
|
|
|
my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0);
|
|
|
|
if ($line =~ /^\+\t{6,}/) {
|
|
WARN("DEEP_INDENTATION",
|
|
"Too many leading tabs - consider code refactoring\n" . $herecurr);
|
|
}
|
|
|
|
my $ctx_cnt = $realcnt - $#ctx - 1;
|
|
my $ctx = join("\n", @ctx);
|
|
|
|
my $ctx_ln = $linenr;
|
|
my $ctx_skip = $realcnt;
|
|
|
|
while ($ctx_skip > $ctx_cnt || ($ctx_skip == $ctx_cnt &&
|
|
defined $lines[$ctx_ln - 1] &&
|
|
$lines[$ctx_ln - 1] =~ /^-/)) {
|
|
##print "SKIP<$ctx_skip> CNT<$ctx_cnt>\n";
|
|
$ctx_skip-- if (!defined $lines[$ctx_ln - 1] || $lines[$ctx_ln - 1] !~ /^-/);
|
|
$ctx_ln++;
|
|
}
|
|
|
|
#print "realcnt<$realcnt> ctx_cnt<$ctx_cnt>\n";
|
|
#print "pre<$pre_ctx>\nline<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>\n";
|
|
|
|
if ($ctx !~ /{\s*/ && defined($lines[$ctx_ln -1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/) {
|
|
ERROR("OPEN_BRACE",
|
|
"that open brace { should be on the previous line\n" .
|
|
"$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
|
|
}
|
|
if ($level == 0 && $pre_ctx !~ /}\s*while\s*\($/ &&
|
|
$ctx =~ /\)\s*\;\s*$/ &&
|
|
defined $lines[$ctx_ln - 1])
|
|
{
|
|
my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]);
|
|
if ($nindent > $indent) {
|
|
WARN("TRAILING_SEMICOLON",
|
|
"trailing semicolon indicates no statements, indent implies otherwise\n" .
|
|
"$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
# Check relative indent for conditionals and blocks.
|
|
if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
|
|
($stat, $cond, $line_nr_next, $remain_next, $off_next) =
|
|
ctx_statement_block($linenr, $realcnt, 0)
|
|
if (!defined $stat);
|
|
my ($s, $c) = ($stat, $cond);
|
|
|
|
substr($s, 0, length($c), '');
|
|
|
|
# Make sure we remove the line prefixes as we have
|
|
# none on the first line, and are going to readd them
|
|
# where necessary.
|
|
$s =~ s/\n./\n/gs;
|
|
|
|
# Find out how long the conditional actually is.
|
|
my @newlines = ($c =~ /\n/gs);
|
|
my $cond_lines = 1 + $#newlines;
|
|
|
|
# We want to check the first line inside the block
|
|
# starting at the end of the conditional, so remove:
|
|
# 1) any blank line termination
|
|
# 2) any opening brace { on end of the line
|
|
# 3) any do (...) {
|
|
my $continuation = 0;
|
|
my $check = 0;
|
|
$s =~ s/^.*\bdo\b//;
|
|
$s =~ s/^\s*{//;
|
|
if ($s =~ s/^\s*\\//) {
|
|
$continuation = 1;
|
|
}
|
|
if ($s =~ s/^\s*?\n//) {
|
|
$check = 1;
|
|
$cond_lines++;
|
|
}
|
|
|
|
# Also ignore a loop construct at the end of a
|
|
# preprocessor statement.
|
|
if (($prevline =~ /^.\s*#\s*define\s/ ||
|
|
$prevline =~ /\\\s*$/) && $continuation == 0) {
|
|
$check = 0;
|
|
}
|
|
|
|
my $cond_ptr = -1;
|
|
$continuation = 0;
|
|
while ($cond_ptr != $cond_lines) {
|
|
$cond_ptr = $cond_lines;
|
|
|
|
# If we see an #else/#elif then the code
|
|
# is not linear.
|
|
if ($s =~ /^\s*\#\s*(?:else|elif)/) {
|
|
$check = 0;
|
|
}
|
|
|
|
# Ignore:
|
|
# 1) blank lines, they should be at 0,
|
|
# 2) preprocessor lines, and
|
|
# 3) labels.
|
|
if ($continuation ||
|
|
$s =~ /^\s*?\n/ ||
|
|
$s =~ /^\s*#\s*?/ ||
|
|
$s =~ /^\s*$Ident\s*:/) {
|
|
$continuation = ($s =~ /^.*?\\\n/) ? 1 : 0;
|
|
if ($s =~ s/^.*?\n//) {
|
|
$cond_lines++;
|
|
}
|
|
}
|
|
}
|
|
|
|
my (undef, $sindent) = line_stats("+" . $s);
|
|
my $stat_real = raw_line($linenr, $cond_lines);
|
|
|
|
# Check if either of these lines are modified, else
|
|
# this is not this patch's fault.
|
|
if (!defined($stat_real) ||
|
|
$stat !~ /^\+/ && $stat_real !~ /^\+/) {
|
|
$check = 0;
|
|
}
|
|
if (defined($stat_real) && $cond_lines > 1) {
|
|
$stat_real = "[...]\n$stat_real";
|
|
}
|
|
|
|
#print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s> cond_lines<$cond_lines> stat_real<$stat_real> stat<$stat>\n";
|
|
|
|
if ($check && (($sindent % 8) != 0 ||
|
|
($sindent <= $indent && $s ne ''))) {
|
|
WARN("SUSPECT_CODE_INDENT",
|
|
"suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
|
|
}
|
|
}
|
|
|
|
# Track the 'values' across context and added lines.
|
|
my $opline = $line; $opline =~ s/^./ /;
|
|
my ($curr_values, $curr_vars) =
|
|
annotate_values($opline . "\n", $prev_values);
|
|
$curr_values = $prev_values . $curr_values;
|
|
if ($dbg_values) {
|
|
my $outline = $opline; $outline =~ s/\t/ /g;
|
|
print "$linenr > .$outline\n";
|
|
print "$linenr > $curr_values\n";
|
|
print "$linenr > $curr_vars\n";
|
|
}
|
|
$prev_values = substr($curr_values, -1);
|
|
|
|
#ignore lines not being added
|
|
if ($line=~/^[^\+]/) {next;}
|
|
|
|
# TEST: allow direct testing of the type matcher.
|
|
if ($dbg_type) {
|
|
if ($line =~ /^.\s*$Declare\s*$/) {
|
|
ERROR("TEST_TYPE",
|
|
"TEST: is type\n" . $herecurr);
|
|
} elsif ($dbg_type > 1 && $line =~ /^.+($Declare)/) {
|
|
ERROR("TEST_NOT_TYPE",
|
|
"TEST: is not type ($1 is)\n". $herecurr);
|
|
}
|
|
next;
|
|
}
|
|
# TEST: allow direct testing of the attribute matcher.
|
|
if ($dbg_attr) {
|
|
if ($line =~ /^.\s*$Modifier\s*$/) {
|
|
ERROR("TEST_ATTR",
|
|
"TEST: is attr\n" . $herecurr);
|
|
} elsif ($dbg_attr > 1 && $line =~ /^.+($Modifier)/) {
|
|
ERROR("TEST_NOT_ATTR",
|
|
"TEST: is not attr ($1 is)\n". $herecurr);
|
|
}
|
|
next;
|
|
}
|
|
|
|
# check for initialisation to aggregates open brace on the next line
|
|
if ($line =~ /^.\s*{/ &&
|
|
$prevline =~ /(?:^|[^=])=\s*$/) {
|
|
ERROR("OPEN_BRACE",
|
|
"that open brace { should be on the previous line\n" . $hereprev);
|
|
}
|
|
|
|
#
|
|
# Checks which are anchored on the added line.
|
|
#
|
|
|
|
# check for malformed paths in #include statements (uses RAW line)
|
|
if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) {
|
|
my $path = $1;
|
|
if ($path =~ m{//}) {
|
|
ERROR("MALFORMED_INCLUDE",
|
|
"malformed #include filename\n" . $herecurr);
|
|
}
|
|
if ($path =~ "^uapi/" && $realfile =~ m@\binclude/uapi/@) {
|
|
ERROR("UAPI_INCLUDE",
|
|
"No #include in ...include/uapi/... should use a uapi/ path prefix\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# no C99 // comments
|
|
if ($line =~ m{//}) {
|
|
ERROR("C99_COMMENTS",
|
|
"do not use C99 // comments\n" . $herecurr);
|
|
}
|
|
# Remove C99 comments.
|
|
$line =~ s@//.*@@;
|
|
$opline =~ s@//.*@@;
|
|
|
|
# EXPORT_SYMBOL should immediately follow the thing it is exporting, consider
|
|
# the whole statement.
|
|
#print "APW <$lines[$realline_next - 1]>\n";
|
|
if (defined $realline_next &&
|
|
exists $lines[$realline_next - 1] &&
|
|
!defined $suppress_export{$realline_next} &&
|
|
($lines[$realline_next - 1] =~ /EXPORT_SYMBOL.*\((.*)\)/ ||
|
|
$lines[$realline_next - 1] =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) {
|
|
# Handle definitions which produce identifiers with
|
|
# a prefix:
|
|
# XXX(foo);
|
|
# EXPORT_SYMBOL(something_foo);
|
|
my $name = $1;
|
|
if ($stat =~ /^(?:.\s*}\s*\n)?.([A-Z_]+)\s*\(\s*($Ident)/ &&
|
|
$name =~ /^${Ident}_$2/) {
|
|
#print "FOO C name<$name>\n";
|
|
$suppress_export{$realline_next} = 1;
|
|
|
|
} elsif ($stat !~ /(?:
|
|
\n.}\s*$|
|
|
^.DEFINE_$Ident\(\Q$name\E\)|
|
|
^.DECLARE_$Ident\(\Q$name\E\)|
|
|
^.LIST_HEAD\(\Q$name\E\)|
|
|
^.(?:$Storage\s+)?$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(|
|
|
\b\Q$name\E(?:\s+$Attribute)*\s*(?:;|=|\[|\()
|
|
)/x) {
|
|
#print "FOO A<$lines[$realline_next - 1]> stat<$stat> name<$name>\n";
|
|
$suppress_export{$realline_next} = 2;
|
|
} else {
|
|
$suppress_export{$realline_next} = 1;
|
|
}
|
|
}
|
|
if (!defined $suppress_export{$linenr} &&
|
|
$prevline =~ /^.\s*$/ &&
|
|
($line =~ /EXPORT_SYMBOL.*\((.*)\)/ ||
|
|
$line =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) {
|
|
#print "FOO B <$lines[$linenr - 1]>\n";
|
|
$suppress_export{$linenr} = 2;
|
|
}
|
|
if (defined $suppress_export{$linenr} &&
|
|
$suppress_export{$linenr} == 2) {
|
|
WARN("EXPORT_SYMBOL",
|
|
"EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
|
|
}
|
|
|
|
# check for global initialisers.
|
|
if ($line =~ /^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) {
|
|
ERROR("GLOBAL_INITIALISERS",
|
|
"do not initialise globals to 0 or NULL\n" .
|
|
$herecurr);
|
|
}
|
|
# check for static initialisers.
|
|
if ($line =~ /\bstatic\s.*=\s*(0|NULL|false)\s*;/) {
|
|
ERROR("INITIALISED_STATIC",
|
|
"do not initialise statics to 0 or NULL\n" .
|
|
$herecurr);
|
|
}
|
|
|
|
# check for static const char * arrays.
|
|
if ($line =~ /\bstatic\s+const\s+char\s*\*\s*(\w+)\s*\[\s*\]\s*=\s*/) {
|
|
WARN("STATIC_CONST_CHAR_ARRAY",
|
|
"static const char * array should probably be static const char * const\n" .
|
|
$herecurr);
|
|
}
|
|
|
|
# check for static char foo[] = "bar" declarations.
|
|
if ($line =~ /\bstatic\s+char\s+(\w+)\s*\[\s*\]\s*=\s*"/) {
|
|
WARN("STATIC_CONST_CHAR_ARRAY",
|
|
"static char array declaration should probably be static const char\n" .
|
|
$herecurr);
|
|
}
|
|
|
|
# check for declarations of struct pci_device_id
|
|
if ($line =~ /\bstruct\s+pci_device_id\s+\w+\s*\[\s*\]\s*\=\s*\{/) {
|
|
WARN("DEFINE_PCI_DEVICE_TABLE",
|
|
"Use DEFINE_PCI_DEVICE_TABLE for struct pci_device_id\n" . $herecurr);
|
|
}
|
|
|
|
# check for new typedefs, only function parameters and sparse annotations
|
|
# make sense.
|
|
if ($line =~ /\btypedef\s/ &&
|
|
$line !~ /\btypedef\s+$Type\s*\(\s*\*?$Ident\s*\)\s*\(/ &&
|
|
$line !~ /\btypedef\s+$Type\s+$Ident\s*\(/ &&
|
|
$line !~ /\b$typeTypedefs\b/ &&
|
|
$line !~ /\b__bitwise(?:__|)\b/) {
|
|
WARN("NEW_TYPEDEFS",
|
|
"do not add new typedefs\n" . $herecurr);
|
|
}
|
|
|
|
# * goes on variable not on type
|
|
# (char*[ const])
|
|
while ($line =~ m{(\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\))}g) {
|
|
#print "AA<$1>\n";
|
|
my ($from, $to) = ($2, $2);
|
|
|
|
# Should start with a space.
|
|
$to =~ s/^(\S)/ $1/;
|
|
# Should not end with a space.
|
|
$to =~ s/\s+$//;
|
|
# '*'s should not have spaces between.
|
|
while ($to =~ s/\*\s+\*/\*\*/) {
|
|
}
|
|
|
|
#print "from<$from> to<$to>\n";
|
|
if ($from ne $to) {
|
|
ERROR("POINTER_LOCATION",
|
|
"\"(foo$from)\" should be \"(foo$to)\"\n" . $herecurr);
|
|
}
|
|
}
|
|
while ($line =~ m{(\b$NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)($Ident))}g) {
|
|
#print "BB<$1>\n";
|
|
my ($from, $to, $ident) = ($2, $2, $3);
|
|
|
|
# Should start with a space.
|
|
$to =~ s/^(\S)/ $1/;
|
|
# Should not end with a space.
|
|
$to =~ s/\s+$//;
|
|
# '*'s should not have spaces between.
|
|
while ($to =~ s/\*\s+\*/\*\*/) {
|
|
}
|
|
# Modifiers should have spaces.
|
|
$to =~ s/(\b$Modifier$)/$1 /;
|
|
|
|
#print "from<$from> to<$to> ident<$ident>\n";
|
|
if ($from ne $to && $ident !~ /^$Modifier$/) {
|
|
ERROR("POINTER_LOCATION",
|
|
"\"foo${from}bar\" should be \"foo${to}bar\"\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# # no BUG() or BUG_ON()
|
|
# if ($line =~ /\b(BUG|BUG_ON)\b/) {
|
|
# print "Try to use WARN_ON & Recovery code rather than BUG() or BUG_ON()\n";
|
|
# print "$herecurr";
|
|
# $clean = 0;
|
|
# }
|
|
|
|
if ($line =~ /\bLINUX_VERSION_CODE\b/) {
|
|
WARN("LINUX_VERSION_CODE",
|
|
"LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr);
|
|
}
|
|
|
|
# check for uses of printk_ratelimit
|
|
if ($line =~ /\bprintk_ratelimit\s*\(/) {
|
|
WARN("PRINTK_RATELIMITED",
|
|
"Prefer printk_ratelimited or pr_<level>_ratelimited to printk_ratelimit\n" . $herecurr);
|
|
}
|
|
|
|
# printk should use KERN_* levels. Note that follow on printk's on the
|
|
# same line do not need a level, so we use the current block context
|
|
# to try and find and validate the current printk. In summary the current
|
|
# printk includes all preceding printk's which have no newline on the end.
|
|
# we assume the first bad printk is the one to report.
|
|
if ($line =~ /\bprintk\((?!KERN_)\s*"/) {
|
|
my $ok = 0;
|
|
for (my $ln = $linenr - 1; $ln >= $first_line; $ln--) {
|
|
#print "CHECK<$lines[$ln - 1]\n";
|
|
# we have a preceding printk if it ends
|
|
# with "\n" ignore it, else it is to blame
|
|
if ($lines[$ln - 1] =~ m{\bprintk\(}) {
|
|
if ($rawlines[$ln - 1] !~ m{\\n"}) {
|
|
$ok = 1;
|
|
}
|
|
last;
|
|
}
|
|
}
|
|
if ($ok == 0) {
|
|
WARN("PRINTK_WITHOUT_KERN_LEVEL",
|
|
"printk() should include KERN_ facility level\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
if ($line =~ /\bprintk\s*\(\s*KERN_([A-Z]+)/) {
|
|
my $orig = $1;
|
|
my $level = lc($orig);
|
|
$level = "warn" if ($level eq "warning");
|
|
my $level2 = $level;
|
|
$level2 = "dbg" if ($level eq "debug");
|
|
WARN("PREFER_PR_LEVEL",
|
|
"Prefer netdev_$level2(netdev, ... then dev_$level2(dev, ... then pr_$level(... to printk(KERN_$orig ...\n" . $herecurr);
|
|
}
|
|
|
|
if ($line =~ /\bpr_warning\s*\(/) {
|
|
WARN("PREFER_PR_LEVEL",
|
|
"Prefer pr_warn(... to pr_warning(...\n" . $herecurr);
|
|
}
|
|
|
|
if ($line =~ /\bdev_printk\s*\(\s*KERN_([A-Z]+)/) {
|
|
my $orig = $1;
|
|
my $level = lc($orig);
|
|
$level = "warn" if ($level eq "warning");
|
|
$level = "dbg" if ($level eq "debug");
|
|
WARN("PREFER_DEV_LEVEL",
|
|
"Prefer dev_$level(... to dev_printk(KERN_$orig, ...\n" . $herecurr);
|
|
}
|
|
|
|
# function brace can't be on same line, except for #defines of do while,
|
|
# or if closed on same line
|
|
if (($line=~/$Type\s*$Ident\(.*\).*\s{/) and
|
|
!($line=~/\#\s*define.*do\s{/) and !($line=~/}/)) {
|
|
ERROR("OPEN_BRACE",
|
|
"open brace '{' following function declarations go on the next line\n" . $herecurr);
|
|
}
|
|
|
|
# open braces for enum, union and struct go on the same line.
|
|
if ($line =~ /^.\s*{/ &&
|
|
$prevline =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?\s*$/) {
|
|
ERROR("OPEN_BRACE",
|
|
"open brace '{' following $1 go on the same line\n" . $hereprev);
|
|
}
|
|
|
|
# missing space after union, struct or enum definition
|
|
if ($line =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?(?:\s+$Ident)?[=\{]/) {
|
|
WARN("SPACING",
|
|
"missing space after $1 definition\n" . $herecurr);
|
|
}
|
|
|
|
# check for spacing round square brackets; allowed:
|
|
# 1. with a type on the left -- int [] a;
|
|
# 2. at the beginning of a line for slice initialisers -- [0...10] = 5,
|
|
# 3. inside a curly brace -- = { [0...10] = 5 }
|
|
while ($line =~ /(.*?\s)\[/g) {
|
|
my ($where, $prefix) = ($-[1], $1);
|
|
if ($prefix !~ /$Type\s+$/ &&
|
|
($where != 0 || $prefix !~ /^.\s+$/) &&
|
|
$prefix !~ /[{,]\s+$/) {
|
|
ERROR("BRACKET_SPACE",
|
|
"space prohibited before open square bracket '['\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# check for spaces between functions and their parentheses.
|
|
while ($line =~ /($Ident)\s+\(/g) {
|
|
my $name = $1;
|
|
my $ctx_before = substr($line, 0, $-[1]);
|
|
my $ctx = "$ctx_before$name";
|
|
|
|
# Ignore those directives where spaces _are_ permitted.
|
|
if ($name =~ /^(?:
|
|
if|for|while|switch|return|case|
|
|
volatile|__volatile__|
|
|
__attribute__|format|__extension__|
|
|
asm|__asm__)$/x)
|
|
{
|
|
|
|
# cpp #define statements have non-optional spaces, ie
|
|
# if there is a space between the name and the open
|
|
# parenthesis it is simply not a parameter group.
|
|
} elsif ($ctx_before =~ /^.\s*\#\s*define\s*$/) {
|
|
|
|
# cpp #elif statement condition may start with a (
|
|
} elsif ($ctx =~ /^.\s*\#\s*elif\s*$/) {
|
|
|
|
# If this whole things ends with a type its most
|
|
# likely a typedef for a function.
|
|
} elsif ($ctx =~ /$Type$/) {
|
|
|
|
} else {
|
|
WARN("SPACING",
|
|
"space prohibited between function name and open parenthesis '('\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# check for whitespace before a non-naked semicolon
|
|
if ($line =~ /^\+.*\S\s+;/) {
|
|
WARN("SPACING",
|
|
"space prohibited before semicolon\n" . $herecurr);
|
|
}
|
|
|
|
# Check operator spacing.
|
|
if (!($line=~/\#\s*include/)) {
|
|
my $ops = qr{
|
|
<<=|>>=|<=|>=|==|!=|
|
|
\+=|-=|\*=|\/=|%=|\^=|\|=|&=|
|
|
=>|->|<<|>>|<|>|=|!|~|
|
|
&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%|
|
|
\?|:
|
|
}x;
|
|
my @elements = split(/($ops|;)/, $opline);
|
|
my $off = 0;
|
|
|
|
my $blank = copy_spacing($opline);
|
|
|
|
for (my $n = 0; $n < $#elements; $n += 2) {
|
|
$off += length($elements[$n]);
|
|
|
|
# Pick up the preceding and succeeding characters.
|
|
my $ca = substr($opline, 0, $off);
|
|
my $cc = '';
|
|
if (length($opline) >= ($off + length($elements[$n + 1]))) {
|
|
$cc = substr($opline, $off + length($elements[$n + 1]));
|
|
}
|
|
my $cb = "$ca$;$cc";
|
|
|
|
my $a = '';
|
|
$a = 'V' if ($elements[$n] ne '');
|
|
$a = 'W' if ($elements[$n] =~ /\s$/);
|
|
$a = 'C' if ($elements[$n] =~ /$;$/);
|
|
$a = 'B' if ($elements[$n] =~ /(\[|\()$/);
|
|
$a = 'O' if ($elements[$n] eq '');
|
|
$a = 'E' if ($ca =~ /^\s*$/);
|
|
|
|
my $op = $elements[$n + 1];
|
|
|
|
my $c = '';
|
|
if (defined $elements[$n + 2]) {
|
|
$c = 'V' if ($elements[$n + 2] ne '');
|
|
$c = 'W' if ($elements[$n + 2] =~ /^\s/);
|
|
$c = 'C' if ($elements[$n + 2] =~ /^$;/);
|
|
$c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/);
|
|
$c = 'O' if ($elements[$n + 2] eq '');
|
|
$c = 'E' if ($elements[$n + 2] =~ /^\s*\\$/);
|
|
} else {
|
|
$c = 'E';
|
|
}
|
|
|
|
my $ctx = "${a}x${c}";
|
|
|
|
my $at = "(ctx:$ctx)";
|
|
|
|
my $ptr = substr($blank, 0, $off) . "^";
|
|
my $hereptr = "$hereline$ptr\n";
|
|
|
|
# Pull out the value of this operator.
|
|
my $op_type = substr($curr_values, $off + 1, 1);
|
|
|
|
# Get the full operator variant.
|
|
my $opv = $op . substr($curr_vars, $off, 1);
|
|
|
|
# Ignore operators passed as parameters.
|
|
if ($op_type ne 'V' &&
|
|
$ca =~ /\s$/ && $cc =~ /^\s*,/) {
|
|
|
|
# # Ignore comments
|
|
# } elsif ($op =~ /^$;+$/) {
|
|
|
|
# ; should have either the end of line or a space or \ after it
|
|
} elsif ($op eq ';') {
|
|
if ($ctx !~ /.x[WEBC]/ &&
|
|
$cc !~ /^\\/ && $cc !~ /^;/) {
|
|
ERROR("SPACING",
|
|
"space required after that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# // is a comment
|
|
} elsif ($op eq '//') {
|
|
|
|
# No spaces for:
|
|
# ->
|
|
# : when part of a bitfield
|
|
} elsif ($op eq '->' || $opv eq ':B') {
|
|
if ($ctx =~ /Wx.|.xW/) {
|
|
ERROR("SPACING",
|
|
"spaces prohibited around that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# , must have a space on the right.
|
|
} elsif ($op eq ',') {
|
|
if ($ctx !~ /.x[WEC]/ && $cc !~ /^}/) {
|
|
ERROR("SPACING",
|
|
"space required after that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# '*' as part of a type definition -- reported already.
|
|
} elsif ($opv eq '*_') {
|
|
#warn "'*' is part of type\n";
|
|
|
|
# unary operators should have a space before and
|
|
# none after. May be left adjacent to another
|
|
# unary operator, or a cast
|
|
} elsif ($op eq '!' || $op eq '~' ||
|
|
$opv eq '*U' || $opv eq '-U' ||
|
|
$opv eq '&U' || $opv eq '&&U') {
|
|
if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
|
|
ERROR("SPACING",
|
|
"space required before that '$op' $at\n" . $hereptr);
|
|
}
|
|
if ($op eq '*' && $cc =~/\s*$Modifier\b/) {
|
|
# A unary '*' may be const
|
|
|
|
} elsif ($ctx =~ /.xW/) {
|
|
ERROR("SPACING",
|
|
"space prohibited after that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# unary ++ and unary -- are allowed no space on one side.
|
|
} elsif ($op eq '++' or $op eq '--') {
|
|
if ($ctx !~ /[WEOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) {
|
|
ERROR("SPACING",
|
|
"space required one side of that '$op' $at\n" . $hereptr);
|
|
}
|
|
if ($ctx =~ /Wx[BE]/ ||
|
|
($ctx =~ /Wx./ && $cc =~ /^;/)) {
|
|
ERROR("SPACING",
|
|
"space prohibited before that '$op' $at\n" . $hereptr);
|
|
}
|
|
if ($ctx =~ /ExW/) {
|
|
ERROR("SPACING",
|
|
"space prohibited after that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
|
|
# << and >> may either have or not have spaces both sides
|
|
} elsif ($op eq '<<' or $op eq '>>' or
|
|
$op eq '&' or $op eq '^' or $op eq '|' or
|
|
$op eq '+' or $op eq '-' or
|
|
$op eq '*' or $op eq '/' or
|
|
$op eq '%')
|
|
{
|
|
if ($ctx =~ /Wx[^WCE]|[^WCE]xW/) {
|
|
ERROR("SPACING",
|
|
"need consistent spacing around '$op' $at\n" .
|
|
$hereptr);
|
|
}
|
|
|
|
# A colon needs no spaces before when it is
|
|
# terminating a case value or a label.
|
|
} elsif ($opv eq ':C' || $opv eq ':L') {
|
|
if ($ctx =~ /Wx./) {
|
|
ERROR("SPACING",
|
|
"space prohibited before that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# All the others need spaces both sides.
|
|
} elsif ($ctx !~ /[EWC]x[CWE]/) {
|
|
my $ok = 0;
|
|
|
|
# Ignore email addresses <foo@bar>
|
|
if (($op eq '<' &&
|
|
$cc =~ /^\S+\@\S+>/) ||
|
|
($op eq '>' &&
|
|
$ca =~ /<\S+\@\S+$/))
|
|
{
|
|
$ok = 1;
|
|
}
|
|
|
|
# Ignore ?:
|
|
if (($opv eq ':O' && $ca =~ /\?$/) ||
|
|
($op eq '?' && $cc =~ /^:/)) {
|
|
$ok = 1;
|
|
}
|
|
|
|
if ($ok == 0) {
|
|
ERROR("SPACING",
|
|
"spaces required around that '$op' $at\n" . $hereptr);
|
|
}
|
|
}
|
|
$off += length($elements[$n + 1]);
|
|
}
|
|
}
|
|
|
|
# check for multiple assignments
|
|
if ($line =~ /^.\s*$Lval\s*=\s*$Lval\s*=(?!=)/) {
|
|
CHK("MULTIPLE_ASSIGNMENTS",
|
|
"multiple assignments should be avoided\n" . $herecurr);
|
|
}
|
|
|
|
## # check for multiple declarations, allowing for a function declaration
|
|
## # continuation.
|
|
## if ($line =~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Ident.*/ &&
|
|
## $line !~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Type\s*$Ident.*/) {
|
|
##
|
|
## # Remove any bracketed sections to ensure we do not
|
|
## # falsly report the parameters of functions.
|
|
## my $ln = $line;
|
|
## while ($ln =~ s/\([^\(\)]*\)//g) {
|
|
## }
|
|
## if ($ln =~ /,/) {
|
|
## WARN("MULTIPLE_DECLARATION",
|
|
## "declaring multiple variables together should be avoided\n" . $herecurr);
|
|
## }
|
|
## }
|
|
|
|
#need space before brace following if, while, etc
|
|
if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) ||
|
|
$line =~ /do{/) {
|
|
ERROR("SPACING",
|
|
"space required before the open brace '{'\n" . $herecurr);
|
|
}
|
|
|
|
# closing brace should have a space following it when it has anything
|
|
# on the line
|
|
if ($line =~ /}(?!(?:,|;|\)))\S/) {
|
|
ERROR("SPACING",
|
|
"space required after that close brace '}'\n" . $herecurr);
|
|
}
|
|
|
|
# check spacing on square brackets
|
|
if ($line =~ /\[\s/ && $line !~ /\[\s*$/) {
|
|
ERROR("SPACING",
|
|
"space prohibited after that open square bracket '['\n" . $herecurr);
|
|
}
|
|
if ($line =~ /\s\]/) {
|
|
ERROR("SPACING",
|
|
"space prohibited before that close square bracket ']'\n" . $herecurr);
|
|
}
|
|
|
|
# check spacing on parentheses
|
|
if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ &&
|
|
$line !~ /for\s*\(\s+;/) {
|
|
ERROR("SPACING",
|
|
"space prohibited after that open parenthesis '('\n" . $herecurr);
|
|
}
|
|
if ($line =~ /(\s+)\)/ && $line !~ /^.\s*\)/ &&
|
|
$line !~ /for\s*\(.*;\s+\)/ &&
|
|
$line !~ /:\s+\)/) {
|
|
ERROR("SPACING",
|
|
"space prohibited before that close parenthesis ')'\n" . $herecurr);
|
|
}
|
|
|
|
#goto labels aren't indented, allow a single space however
|
|
if ($line=~/^.\s+[A-Za-z\d_]+:(?![0-9]+)/ and
|
|
!($line=~/^. [A-Za-z\d_]+:/) and !($line=~/^.\s+default:/)) {
|
|
WARN("INDENTED_LABEL",
|
|
"labels should not be indented\n" . $herecurr);
|
|
}
|
|
|
|
# Return is not a function.
|
|
if (defined($stat) && $stat =~ /^.\s*return(\s*)(\(.*);/s) {
|
|
my $spacing = $1;
|
|
my $value = $2;
|
|
|
|
# Flatten any parentheses
|
|
$value =~ s/\(/ \(/g;
|
|
$value =~ s/\)/\) /g;
|
|
while ($value =~ s/\[[^\[\]]*\]/1/ ||
|
|
$value !~ /(?:$Ident|-?$Constant)\s*
|
|
$Compare\s*
|
|
(?:$Ident|-?$Constant)/x &&
|
|
$value =~ s/\([^\(\)]*\)/1/) {
|
|
}
|
|
#print "value<$value>\n";
|
|
if ($value =~ /^\s*(?:$Ident|-?$Constant)\s*$/) {
|
|
ERROR("RETURN_PARENTHESES",
|
|
"return is not a function, parentheses are not required\n" . $herecurr);
|
|
|
|
} elsif ($spacing !~ /\s+/) {
|
|
ERROR("SPACING",
|
|
"space required before the open parenthesis '('\n" . $herecurr);
|
|
}
|
|
}
|
|
# Return of what appears to be an errno should normally be -'ve
|
|
if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) {
|
|
my $name = $1;
|
|
if ($name ne 'EOF' && $name ne 'ERROR') {
|
|
WARN("USE_NEGATIVE_ERRNO",
|
|
"return of an errno should typically be -ve (return -$1)\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# Need a space before open parenthesis after if, while etc
|
|
if ($line=~/\b(if|while|for|switch)\(/) {
|
|
ERROR("SPACING", "space required before the open parenthesis '('\n" . $herecurr);
|
|
}
|
|
|
|
# Check for illegal assignment in if conditional -- and check for trailing
|
|
# statements after the conditional.
|
|
if ($line =~ /do\s*(?!{)/) {
|
|
($stat, $cond, $line_nr_next, $remain_next, $off_next) =
|
|
ctx_statement_block($linenr, $realcnt, 0)
|
|
if (!defined $stat);
|
|
my ($stat_next) = ctx_statement_block($line_nr_next,
|
|
$remain_next, $off_next);
|
|
$stat_next =~ s/\n./\n /g;
|
|
##print "stat<$stat> stat_next<$stat_next>\n";
|
|
|
|
if ($stat_next =~ /^\s*while\b/) {
|
|
# If the statement carries leading newlines,
|
|
# then count those as offsets.
|
|
my ($whitespace) =
|
|
($stat_next =~ /^((?:\s*\n[+-])*\s*)/s);
|
|
my $offset =
|
|
statement_rawlines($whitespace) - 1;
|
|
|
|
$suppress_whiletrailers{$line_nr_next +
|
|
$offset} = 1;
|
|
}
|
|
}
|
|
if (!defined $suppress_whiletrailers{$linenr} &&
|
|
$line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
|
|
my ($s, $c) = ($stat, $cond);
|
|
|
|
if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) {
|
|
ERROR("ASSIGN_IN_IF",
|
|
"do not use assignment in if condition\n" . $herecurr);
|
|
}
|
|
|
|
# Find out what is on the end of the line after the
|
|
# conditional.
|
|
substr($s, 0, length($c), '');
|
|
$s =~ s/\n.*//g;
|
|
$s =~ s/$;//g; # Remove any comments
|
|
if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ &&
|
|
$c !~ /}\s*while\s*/)
|
|
{
|
|
# Find out how long the conditional actually is.
|
|
my @newlines = ($c =~ /\n/gs);
|
|
my $cond_lines = 1 + $#newlines;
|
|
my $stat_real = '';
|
|
|
|
$stat_real = raw_line($linenr, $cond_lines)
|
|
. "\n" if ($cond_lines);
|
|
if (defined($stat_real) && $cond_lines > 1) {
|
|
$stat_real = "[...]\n$stat_real";
|
|
}
|
|
|
|
ERROR("TRAILING_STATEMENTS",
|
|
"trailing statements should be on next line\n" . $herecurr . $stat_real);
|
|
}
|
|
}
|
|
|
|
# Check for bitwise tests written as boolean
|
|
if ($line =~ /
|
|
(?:
|
|
(?:\[|\(|\&\&|\|\|)
|
|
\s*0[xX][0-9]+\s*
|
|
(?:\&\&|\|\|)
|
|
|
|
|
(?:\&\&|\|\|)
|
|
\s*0[xX][0-9]+\s*
|
|
(?:\&\&|\|\||\)|\])
|
|
)/x)
|
|
{
|
|
WARN("HEXADECIMAL_BOOLEAN_TEST",
|
|
"boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . $herecurr);
|
|
}
|
|
|
|
# if and else should not have general statements after it
|
|
if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/) {
|
|
my $s = $1;
|
|
$s =~ s/$;//g; # Remove any comments
|
|
if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) {
|
|
ERROR("TRAILING_STATEMENTS",
|
|
"trailing statements should be on next line\n" . $herecurr);
|
|
}
|
|
}
|
|
# if should not continue a brace
|
|
if ($line =~ /}\s*if\b/) {
|
|
ERROR("TRAILING_STATEMENTS",
|
|
"trailing statements should be on next line\n" .
|
|
$herecurr);
|
|
}
|
|
# case and default should not have general statements after them
|
|
if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g &&
|
|
$line !~ /\G(?:
|
|
(?:\s*$;*)(?:\s*{)?(?:\s*$;*)(?:\s*\\)?\s*$|
|
|
\s*return\s+
|
|
)/xg)
|
|
{
|
|
ERROR("TRAILING_STATEMENTS",
|
|
"trailing statements should be on next line\n" . $herecurr);
|
|
}
|
|
|
|
# Check for }<nl>else {, these must be at the same
|
|
# indent level to be relevant to each other.
|
|
if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ and
|
|
$previndent == $indent) {
|
|
ERROR("ELSE_AFTER_BRACE",
|
|
"else should follow close brace '}'\n" . $hereprev);
|
|
}
|
|
|
|
if ($prevline=~/}\s*$/ and $line=~/^.\s*while\s*/ and
|
|
$previndent == $indent) {
|
|
my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0);
|
|
|
|
# Find out what is on the end of the line after the
|
|
# conditional.
|
|
substr($s, 0, length($c), '');
|
|
$s =~ s/\n.*//g;
|
|
|
|
if ($s =~ /^\s*;/) {
|
|
ERROR("WHILE_AFTER_BRACE",
|
|
"while should follow close brace '}'\n" . $hereprev);
|
|
}
|
|
}
|
|
|
|
#CamelCase
|
|
while ($line =~ m{($Constant|$Lval)}g) {
|
|
my $var = $1;
|
|
if ($var !~ /$Constant/ &&
|
|
$var =~ /[A-Z]\w*[a-z]|[a-z]\w*[A-Z]/ &&
|
|
$var !~ /"^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
|
|
!defined $camelcase{$var}) {
|
|
$camelcase{$var} = 1;
|
|
WARN("CAMELCASE",
|
|
"Avoid CamelCase: <$var>\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
#no spaces allowed after \ in define
|
|
if ($line=~/\#\s*define.*\\\s$/) {
|
|
WARN("WHITESPACE_AFTER_LINE_CONTINUATION",
|
|
"Whitepspace after \\ makes next lines useless\n" . $herecurr);
|
|
}
|
|
|
|
#warn if <asm/foo.h> is #included and <linux/foo.h> is available (uses RAW line)
|
|
if ($tree && $rawline =~ m{^.\s*\#\s*include\s*\<asm\/(.*)\.h\>}) {
|
|
my $file = "$1.h";
|
|
my $checkfile = "include/linux/$file";
|
|
if (-f "$root/$checkfile" &&
|
|
$realfile ne $checkfile &&
|
|
$1 !~ /$allowed_asm_includes/)
|
|
{
|
|
if ($realfile =~ m{^arch/}) {
|
|
CHK("ARCH_INCLUDE_LINUX",
|
|
"Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
|
|
} else {
|
|
WARN("INCLUDE_LINUX",
|
|
"Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
|
|
}
|
|
}
|
|
}
|
|
|
|
# multi-statement macros should be enclosed in a do while loop, grab the
|
|
# first statement and ensure its the whole macro if its not enclosed
|
|
# in a known good container
|
|
if ($realfile !~ m@/vmlinux.lds.h$@ &&
|
|
$line =~ /^.\s*\#\s*define\s*$Ident(\()?/) {
|
|
my $ln = $linenr;
|
|
my $cnt = $realcnt;
|
|
my ($off, $dstat, $dcond, $rest);
|
|
my $ctx = '';
|
|
($dstat, $dcond, $ln, $cnt, $off) =
|
|
ctx_statement_block($linenr, $realcnt, 0);
|
|
$ctx = $dstat;
|
|
#print "dstat<$dstat> dcond<$dcond> cnt<$cnt> off<$off>\n";
|
|
#print "LINE<$lines[$ln-1]> len<" . length($lines[$ln-1]) . "\n";
|
|
|
|
$dstat =~ s/^.\s*\#\s*define\s+$Ident(?:\([^\)]*\))?\s*//;
|
|
$dstat =~ s/$;//g;
|
|
$dstat =~ s/\\\n.//g;
|
|
$dstat =~ s/^\s*//s;
|
|
$dstat =~ s/\s*$//s;
|
|
|
|
# Flatten any parentheses and braces
|
|
while ($dstat =~ s/\([^\(\)]*\)/1/ ||
|
|
$dstat =~ s/\{[^\{\}]*\}/1/ ||
|
|
$dstat =~ s/\[[^\[\]]*\]/1/)
|
|
{
|
|
}
|
|
|
|
# Flatten any obvious string concatentation.
|
|
while ($dstat =~ s/("X*")\s*$Ident/$1/ ||
|
|
$dstat =~ s/$Ident\s*("X*")/$1/)
|
|
{
|
|
}
|
|
|
|
my $exceptions = qr{
|
|
$Declare|
|
|
module_param_named|
|
|
MODULE_PARM_DESC|
|
|
DECLARE_PER_CPU|
|
|
DEFINE_PER_CPU|
|
|
__typeof__\(|
|
|
union|
|
|
struct|
|
|
\.$Ident\s*=\s*|
|
|
^\"|\"$
|
|
}x;
|
|
#print "REST<$rest> dstat<$dstat> ctx<$ctx>\n";
|
|
if ($dstat ne '' &&
|
|
$dstat !~ /^(?:$Ident|-?$Constant),$/ && # 10, // foo(),
|
|
$dstat !~ /^(?:$Ident|-?$Constant);$/ && # foo();
|
|
$dstat !~ /^[!~-]?(?:$Ident|$Constant)$/ && # 10 // foo() // !foo // ~foo // -foo
|
|
$dstat !~ /^'X'$/ && # character constants
|
|
$dstat !~ /$exceptions/ &&
|
|
$dstat !~ /^\.$Ident\s*=/ && # .foo =
|
|
$dstat !~ /^(?:\#\s*$Ident|\#\s*$Constant)\s*$/ && # stringification #foo
|
|
$dstat !~ /^do\s*$Constant\s*while\s*$Constant;?$/ && # do {...} while (...); // do {...} while (...)
|
|
$dstat !~ /^for\s*$Constant$/ && # for (...)
|
|
$dstat !~ /^for\s*$Constant\s+(?:$Ident|-?$Constant)$/ && # for (...) bar()
|
|
$dstat !~ /^do\s*{/ && # do {...
|
|
$dstat !~ /^\({/) # ({...
|
|
{
|
|
$ctx =~ s/\n*$//;
|
|
my $herectx = $here . "\n";
|
|
my $cnt = statement_rawlines($ctx);
|
|
|
|
for (my $n = 0; $n < $cnt; $n++) {
|
|
$herectx .= raw_line($linenr, $n) . "\n";
|
|
}
|
|
|
|
if ($dstat =~ /;/) {
|
|
ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE",
|
|
"Macros with multiple statements should be enclosed in a do - while loop\n" . "$herectx");
|
|
} else {
|
|
ERROR("COMPLEX_MACRO",
|
|
"Macros with complex values should be enclosed in parenthesis\n" . "$herectx");
|
|
}
|
|
}
|
|
|
|
# check for line continuations outside of #defines, preprocessor #, and asm
|
|
|
|
} else {
|
|
if ($prevline !~ /^..*\\$/ &&
|
|
$line !~ /^\+\s*\#.*\\$/ && # preprocessor
|
|
$line !~ /^\+.*\b(__asm__|asm)\b.*\\$/ && # asm
|
|
$line =~ /^\+.*\\$/) {
|
|
WARN("LINE_CONTINUATIONS",
|
|
"Avoid unnecessary line continuations\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# do {} while (0) macro tests:
|
|
# single-statement macros do not need to be enclosed in do while (0) loop,
|
|
# macro should not end with a semicolon
|
|
if ($^V && $^V ge 5.10.0 &&
|
|
$realfile !~ m@/vmlinux.lds.h$@ &&
|
|
$line =~ /^.\s*\#\s*define\s+$Ident(\()?/) {
|
|
my $ln = $linenr;
|
|
my $cnt = $realcnt;
|
|
my ($off, $dstat, $dcond, $rest);
|
|
my $ctx = '';
|
|
($dstat, $dcond, $ln, $cnt, $off) =
|
|
ctx_statement_block($linenr, $realcnt, 0);
|
|
$ctx = $dstat;
|
|
|
|
$dstat =~ s/\\\n.//g;
|
|
|
|
if ($dstat =~ /^\+\s*#\s*define\s+$Ident\s*${balanced_parens}\s*do\s*{(.*)\s*}\s*while\s*\(\s*0\s*\)\s*([;\s]*)\s*$/) {
|
|
my $stmts = $2;
|
|
my $semis = $3;
|
|
|
|
$ctx =~ s/\n*$//;
|
|
my $cnt = statement_rawlines($ctx);
|
|
my $herectx = $here . "\n";
|
|
|
|
for (my $n = 0; $n < $cnt; $n++) {
|
|
$herectx .= raw_line($linenr, $n) . "\n";
|
|
}
|
|
|
|
if (($stmts =~ tr/;/;/) == 1 &&
|
|
$stmts !~ /^\s*(if|while|for|switch)\b/) {
|
|
WARN("SINGLE_STATEMENT_DO_WHILE_MACRO",
|
|
"Single statement macros should not use a do {} while (0) loop\n" . "$herectx");
|
|
}
|
|
if (defined $semis && $semis ne "") {
|
|
WARN("DO_WHILE_MACRO_WITH_TRAILING_SEMICOLON",
|
|
"do {} while (0) macros should not be semicolon terminated\n" . "$herectx");
|
|
}
|
|
}
|
|
}
|
|
|
|
# make sure symbols are always wrapped with VMLINUX_SYMBOL() ...
|
|
# all assignments may have only one of the following with an assignment:
|
|
# .
|
|
# ALIGN(...)
|
|
# VMLINUX_SYMBOL(...)
|
|
if ($realfile eq 'vmlinux.lds.h' && $line =~ /(?:(?:^|\s)$Ident\s*=|=\s*$Ident(?:\s|$))/) {
|
|
WARN("MISSING_VMLINUX_SYMBOL",
|
|
"vmlinux.lds.h needs VMLINUX_SYMBOL() around C-visible symbols\n" . $herecurr);
|
|
}
|
|
|
|
# check for redundant bracing round if etc
|
|
if ($line =~ /(^.*)\bif\b/ && $1 !~ /else\s*$/) {
|
|
my ($level, $endln, @chunks) =
|
|
ctx_statement_full($linenr, $realcnt, 1);
|
|
#print "chunks<$#chunks> linenr<$linenr> endln<$endln> level<$level>\n";
|
|
#print "APW: <<$chunks[1][0]>><<$chunks[1][1]>>\n";
|
|
if ($#chunks > 0 && $level == 0) {
|
|
my @allowed = ();
|
|
my $allow = 0;
|
|
my $seen = 0;
|
|
my $herectx = $here . "\n";
|
|
my $ln = $linenr - 1;
|
|
for my $chunk (@chunks) {
|
|
my ($cond, $block) = @{$chunk};
|
|
|
|
# If the condition carries leading newlines, then count those as offsets.
|
|
my ($whitespace) = ($cond =~ /^((?:\s*\n[+-])*\s*)/s);
|
|
my $offset = statement_rawlines($whitespace) - 1;
|
|
|
|
$allowed[$allow] = 0;
|
|
#print "COND<$cond> whitespace<$whitespace> offset<$offset>\n";
|
|
|
|
# We have looked at and allowed this specific line.
|
|
$suppress_ifbraces{$ln + $offset} = 1;
|
|
|
|
$herectx .= "$rawlines[$ln + $offset]\n[...]\n";
|
|
$ln += statement_rawlines($block) - 1;
|
|
|
|
substr($block, 0, length($cond), '');
|
|
|
|
$seen++ if ($block =~ /^\s*{/);
|
|
|
|
#print "cond<$cond> block<$block> allowed<$allowed[$allow]>\n";
|
|
if (statement_lines($cond) > 1) {
|
|
#print "APW: ALLOWED: cond<$cond>\n";
|
|
$allowed[$allow] = 1;
|
|
}
|
|
if ($block =~/\b(?:if|for|while)\b/) {
|
|
#print "APW: ALLOWED: block<$block>\n";
|
|
$allowed[$allow] = 1;
|
|
}
|
|
if (statement_block_size($block) > 1) {
|
|
#print "APW: ALLOWED: lines block<$block>\n";
|
|
$allowed[$allow] = 1;
|
|
}
|
|
$allow++;
|
|
}
|
|
if ($seen) {
|
|
my $sum_allowed = 0;
|
|
foreach (@allowed) {
|
|
$sum_allowed += $_;
|
|
}
|
|
if ($sum_allowed == 0) {
|
|
WARN("BRACES",
|
|
"braces {} are not necessary for any arm of this statement\n" . $herectx);
|
|
} elsif ($sum_allowed != $allow &&
|
|
$seen != $allow) {
|
|
CHK("BRACES",
|
|
"braces {} should be used on all arms of this statement\n" . $herectx);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!defined $suppress_ifbraces{$linenr - 1} &&
|
|
$line =~ /\b(if|while|for|else)\b/) {
|
|
my $allowed = 0;
|
|
|
|
# Check the pre-context.
|
|
if (substr($line, 0, $-[0]) =~ /(\}\s*)$/) {
|
|
#print "APW: ALLOWED: pre<$1>\n";
|
|
$allowed = 1;
|
|
}
|
|
|
|
my ($level, $endln, @chunks) =
|
|
ctx_statement_full($linenr, $realcnt, $-[0]);
|
|
|
|
# Check the condition.
|
|
my ($cond, $block) = @{$chunks[0]};
|
|
#print "CHECKING<$linenr> cond<$cond> block<$block>\n";
|
|
if (defined $cond) {
|
|
substr($block, 0, length($cond), '');
|
|
}
|
|
if (statement_lines($cond) > 1) {
|
|
#print "APW: ALLOWED: cond<$cond>\n";
|
|
$allowed = 1;
|
|
}
|
|
if ($block =~/\b(?:if|for|while)\b/) {
|
|
#print "APW: ALLOWED: block<$block>\n";
|
|
$allowed = 1;
|
|
}
|
|
if (statement_block_size($block) > 1) {
|
|
#print "APW: ALLOWED: lines block<$block>\n";
|
|
$allowed = 1;
|
|
}
|
|
# Check the post-context.
|
|
if (defined $chunks[1]) {
|
|
my ($cond, $block) = @{$chunks[1]};
|
|
if (defined $cond) {
|
|
substr($block, 0, length($cond), '');
|
|
}
|
|
if ($block =~ /^\s*\{/) {
|
|
#print "APW: ALLOWED: chunk-1 block<$block>\n";
|
|
$allowed = 1;
|
|
}
|
|
}
|
|
if ($level == 0 && $block =~ /^\s*\{/ && !$allowed) {
|
|
my $herectx = $here . "\n";
|
|
my $cnt = statement_rawlines($block);
|
|
|
|
for (my $n = 0; $n < $cnt; $n++) {
|
|
$herectx .= raw_line($linenr, $n) . "\n";
|
|
}
|
|
|
|
WARN("BRACES",
|
|
"braces {} are not necessary for single statement blocks\n" . $herectx);
|
|
}
|
|
}
|
|
|
|
# check for unnecessary blank lines around braces
|
|
if (($line =~ /^.\s*}\s*$/ && $prevline =~ /^.\s*$/)) {
|
|
CHK("BRACES",
|
|
"Blank lines aren't necessary before a close brace '}'\n" . $hereprev);
|
|
}
|
|
if (($line =~ /^.\s*$/ && $prevline =~ /^..*{\s*$/)) {
|
|
CHK("BRACES",
|
|
"Blank lines aren't necessary after an open brace '{'\n" . $hereprev);
|
|
}
|
|
|
|
# no volatiles please
|
|
my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b};
|
|
if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) {
|
|
WARN("VOLATILE",
|
|
"Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr);
|
|
}
|
|
|
|
# warn about #if 0
|
|
if ($line =~ /^.\s*\#\s*if\s+0\b/) {
|
|
CHK("REDUNDANT_CODE",
|
|
"if this code is redundant consider removing it\n" .
|
|
$herecurr);
|
|
}
|
|
|
|
# check for needless "if (<foo>) fn(<foo>)" uses
|
|
if ($prevline =~ /\bif\s*\(\s*($Lval)\s*\)/) {
|
|
my $expr = '\s*\(\s*' . quotemeta($1) . '\s*\)\s*;';
|
|
if ($line =~ /\b(kfree|usb_free_urb|debugfs_remove(?:_recursive)?)$expr/) {
|
|
WARN('NEEDLESS_IF',
|
|
"$1(NULL) is safe this check is probably not required\n" . $hereprev);
|
|
}
|
|
}
|
|
|
|
# prefer usleep_range over udelay
|
|
if ($line =~ /\budelay\s*\(\s*(\d+)\s*\)/) {
|
|
# ignore udelay's < 10, however
|
|
if (! ($1 < 10) ) {
|
|
CHK("USLEEP_RANGE",
|
|
"usleep_range is preferred over udelay; see Documentation/timers/timers-howto.txt\n" . $line);
|
|
}
|
|
}
|
|
|
|
# warn about unexpectedly long msleep's
|
|
if ($line =~ /\bmsleep\s*\((\d+)\);/) {
|
|
if ($1 < 20) {
|
|
WARN("MSLEEP",
|
|
"msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt\n" . $line);
|
|
}
|
|
}
|
|
|
|
# warn about #ifdefs in C files
|
|
# if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) {
|
|
# print "#ifdef in C files should be avoided\n";
|
|
# print "$herecurr";
|
|
# $clean = 0;
|
|
# }
|
|
|
|
# warn about spacing in #ifdefs
|
|
if ($line =~ /^.\s*\#\s*(ifdef|ifndef|elif)\s\s+/) {
|
|
ERROR("SPACING",
|
|
"exactly one space required after that #$1\n" . $herecurr);
|
|
}
|
|
|
|
# check for spinlock_t definitions without a comment.
|
|
if ($line =~ /^.\s*(struct\s+mutex|spinlock_t)\s+\S+;/ ||
|
|
$line =~ /^.\s*(DEFINE_MUTEX)\s*\(/) {
|
|
my $which = $1;
|
|
if (!ctx_has_comment($first_line, $linenr)) {
|
|
CHK("UNCOMMENTED_DEFINITION",
|
|
"$1 definition without comment\n" . $herecurr);
|
|
}
|
|
}
|
|
# check for memory barriers without a comment.
|
|
if ($line =~ /\b(mb|rmb|wmb|read_barrier_depends|smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/) {
|
|
if (!ctx_has_comment($first_line, $linenr)) {
|
|
CHK("MEMORY_BARRIER",
|
|
"memory barrier without comment\n" . $herecurr);
|
|
}
|
|
}
|
|
# check of hardware specific defines
|
|
if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
|
|
CHK("ARCH_DEFINES",
|
|
"architecture specific defines should be avoided\n" . $herecurr);
|
|
}
|
|
|
|
# Check that the storage class is at the beginning of a declaration
|
|
if ($line =~ /\b$Storage\b/ && $line !~ /^.\s*$Storage\b/) {
|
|
WARN("STORAGE_CLASS",
|
|
"storage class should be at the beginning of the declaration\n" . $herecurr)
|
|
}
|
|
|
|
# check the location of the inline attribute, that it is between
|
|
# storage class and type.
|
|
if ($line =~ /\b$Type\s+$Inline\b/ ||
|
|
$line =~ /\b$Inline\s+$Storage\b/) {
|
|
ERROR("INLINE_LOCATION",
|
|
"inline keyword should sit between storage class and type\n" . $herecurr);
|
|
}
|
|
|
|
# Check for __inline__ and __inline, prefer inline
|
|
if ($line =~ /\b(__inline__|__inline)\b/) {
|
|
WARN("INLINE",
|
|
"plain inline is preferred over $1\n" . $herecurr);
|
|
}
|
|
|
|
# Check for __attribute__ packed, prefer __packed
|
|
if ($line =~ /\b__attribute__\s*\(\s*\(.*\bpacked\b/) {
|
|
WARN("PREFER_PACKED",
|
|
"__packed is preferred over __attribute__((packed))\n" . $herecurr);
|
|
}
|
|
|
|
# Check for __attribute__ aligned, prefer __aligned
|
|
if ($line =~ /\b__attribute__\s*\(\s*\(.*aligned/) {
|
|
WARN("PREFER_ALIGNED",
|
|
"__aligned(size) is preferred over __attribute__((aligned(size)))\n" . $herecurr);
|
|
}
|
|
|
|
# Check for __attribute__ format(printf, prefer __printf
|
|
if ($line =~ /\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf/) {
|
|
WARN("PREFER_PRINTF",
|
|
"__printf(string-index, first-to-check) is preferred over __attribute__((format(printf, string-index, first-to-check)))\n" . $herecurr);
|
|
}
|
|
|
|
# Check for __attribute__ format(scanf, prefer __scanf
|
|
if ($line =~ /\b__attribute__\s*\(\s*\(\s*format\s*\(\s*scanf\b/) {
|
|
WARN("PREFER_SCANF",
|
|
"__scanf(string-index, first-to-check) is preferred over __attribute__((format(scanf, string-index, first-to-check)))\n" . $herecurr);
|
|
}
|
|
|
|
# check for sizeof(&)
|
|
if ($line =~ /\bsizeof\s*\(\s*\&/) {
|
|
WARN("SIZEOF_ADDRESS",
|
|
"sizeof(& should be avoided\n" . $herecurr);
|
|
}
|
|
|
|
# check for sizeof without parenthesis
|
|
if ($line =~ /\bsizeof\s+((?:\*\s*|)$Lval|$Type(?:\s+$Lval|))/) {
|
|
WARN("SIZEOF_PARENTHESIS",
|
|
"sizeof $1 should be sizeof($1)\n" . $herecurr);
|
|
}
|
|
|
|
# check for line continuations in quoted strings with odd counts of "
|
|
if ($rawline =~ /\\$/ && $rawline =~ tr/"/"/ % 2) {
|
|
WARN("LINE_CONTINUATIONS",
|
|
"Avoid line continuations in quoted strings\n" . $herecurr);
|
|
}
|
|
|
|
# check for struct spinlock declarations
|
|
if ($line =~ /^.\s*\bstruct\s+spinlock\s+\w+\s*;/) {
|
|
WARN("USE_SPINLOCK_T",
|
|
"struct spinlock should be spinlock_t\n" . $herecurr);
|
|
}
|
|
|
|
# check for seq_printf uses that could be seq_puts
|
|
if ($line =~ /\bseq_printf\s*\(/) {
|
|
my $fmt = get_quoted_string($line, $rawline);
|
|
if ($fmt !~ /[^\\]\%/) {
|
|
WARN("PREFER_SEQ_PUTS",
|
|
"Prefer seq_puts to seq_printf\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# Check for misused memsets
|
|
if ($^V && $^V ge 5.10.0 &&
|
|
defined $stat &&
|
|
$stat =~ /^\+(?:.*?)\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*$FuncArg\s*\)/s) {
|
|
|
|
my $ms_addr = $2;
|
|
my $ms_val = $7;
|
|
my $ms_size = $12;
|
|
|
|
if ($ms_size =~ /^(0x|)0$/i) {
|
|
ERROR("MEMSET",
|
|
"memset to 0's uses 0 as the 2nd argument, not the 3rd\n" . "$here\n$stat\n");
|
|
} elsif ($ms_size =~ /^(0x|)1$/i) {
|
|
WARN("MEMSET",
|
|
"single byte memset is suspicious. Swapped 2nd/3rd argument?\n" . "$here\n$stat\n");
|
|
}
|
|
}
|
|
|
|
# typecasts on min/max could be min_t/max_t
|
|
if ($^V && $^V ge 5.10.0 &&
|
|
defined $stat &&
|
|
$stat =~ /^\+(?:.*?)\b(min|max)\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\)/) {
|
|
if (defined $2 || defined $7) {
|
|
my $call = $1;
|
|
my $cast1 = deparenthesize($2);
|
|
my $arg1 = $3;
|
|
my $cast2 = deparenthesize($7);
|
|
my $arg2 = $8;
|
|
my $cast;
|
|
|
|
if ($cast1 ne "" && $cast2 ne "" && $cast1 ne $cast2) {
|
|
$cast = "$cast1 or $cast2";
|
|
} elsif ($cast1 ne "") {
|
|
$cast = $cast1;
|
|
} else {
|
|
$cast = $cast2;
|
|
}
|
|
WARN("MINMAX",
|
|
"$call() should probably be ${call}_t($cast, $arg1, $arg2)\n" . "$here\n$stat\n");
|
|
}
|
|
}
|
|
|
|
# check usleep_range arguments
|
|
if ($^V && $^V ge 5.10.0 &&
|
|
defined $stat &&
|
|
$stat =~ /^\+(?:.*?)\busleep_range\s*\(\s*($FuncArg)\s*,\s*($FuncArg)\s*\)/) {
|
|
my $min = $1;
|
|
my $max = $7;
|
|
if ($min eq $max) {
|
|
WARN("USLEEP_RANGE",
|
|
"usleep_range should not use min == max args; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
|
|
} elsif ($min =~ /^\d+$/ && $max =~ /^\d+$/ &&
|
|
$min > $max) {
|
|
WARN("USLEEP_RANGE",
|
|
"usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
|
|
}
|
|
}
|
|
|
|
# check for new externs in .c files.
|
|
if ($realfile =~ /\.c$/ && defined $stat &&
|
|
$stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s)
|
|
{
|
|
my $function_name = $1;
|
|
my $paren_space = $2;
|
|
|
|
my $s = $stat;
|
|
if (defined $cond) {
|
|
substr($s, 0, length($cond), '');
|
|
}
|
|
if ($s =~ /^\s*;/ &&
|
|
$function_name ne 'uninitialized_var')
|
|
{
|
|
WARN("AVOID_EXTERNS",
|
|
"externs should be avoided in .c files\n" . $herecurr);
|
|
}
|
|
|
|
if ($paren_space =~ /\n/) {
|
|
WARN("FUNCTION_ARGUMENTS",
|
|
"arguments for function declarations should follow identifier\n" . $herecurr);
|
|
}
|
|
|
|
} elsif ($realfile =~ /\.c$/ && defined $stat &&
|
|
$stat =~ /^.\s*extern\s+/)
|
|
{
|
|
WARN("AVOID_EXTERNS",
|
|
"externs should be avoided in .c files\n" . $herecurr);
|
|
}
|
|
|
|
# checks for new __setup's
|
|
if ($rawline =~ /\b__setup\("([^"]*)"/) {
|
|
my $name = $1;
|
|
|
|
if (!grep(/$name/, @setup_docs)) {
|
|
CHK("UNDOCUMENTED_SETUP",
|
|
"__setup appears un-documented -- check Documentation/kernel-parameters.txt\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# check for pointless casting of kmalloc return
|
|
if ($line =~ /\*\s*\)\s*[kv][czm]alloc(_node){0,1}\b/) {
|
|
WARN("UNNECESSARY_CASTS",
|
|
"unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
|
|
}
|
|
|
|
# check for krealloc arg reuse
|
|
if ($^V && $^V ge 5.10.0 &&
|
|
$line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*krealloc\s*\(\s*\1\s*,/) {
|
|
WARN("KREALLOC_ARG_REUSE",
|
|
"Reusing the krealloc arg is almost always a bug\n" . $herecurr);
|
|
}
|
|
|
|
# check for alloc argument mismatch
|
|
if ($line =~ /\b(kcalloc|kmalloc_array)\s*\(\s*sizeof\b/) {
|
|
WARN("ALLOC_ARRAY_ARGS",
|
|
"$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
|
|
}
|
|
|
|
# check for multiple semicolons
|
|
if ($line =~ /;\s*;\s*$/) {
|
|
WARN("ONE_SEMICOLON",
|
|
"Statements terminations use 1 semicolon\n" . $herecurr);
|
|
}
|
|
|
|
# check for switch/default statements without a break;
|
|
if ($^V && $^V ge 5.10.0 &&
|
|
defined $stat &&
|
|
$stat =~ /^\+[$;\s]*(?:case[$;\s]+\w+[$;\s]*:[$;\s]*|)*[$;\s]*\bdefault[$;\s]*:[$;\s]*;/g) {
|
|
my $ctx = '';
|
|
my $herectx = $here . "\n";
|
|
my $cnt = statement_rawlines($stat);
|
|
for (my $n = 0; $n < $cnt; $n++) {
|
|
$herectx .= raw_line($linenr, $n) . "\n";
|
|
}
|
|
WARN("DEFAULT_NO_BREAK",
|
|
"switch default: should use break\n" . $herectx);
|
|
}
|
|
|
|
# check for gcc specific __FUNCTION__
|
|
if ($line =~ /__FUNCTION__/) {
|
|
WARN("USE_FUNC",
|
|
"__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr);
|
|
}
|
|
|
|
# check for use of yield()
|
|
if ($line =~ /\byield\s*\(\s*\)/) {
|
|
WARN("YIELD",
|
|
"Using yield() is generally wrong. See yield() kernel-doc (sched/core.c)\n" . $herecurr);
|
|
}
|
|
|
|
# check for semaphores initialized locked
|
|
if ($line =~ /^.\s*sema_init.+,\W?0\W?\)/) {
|
|
WARN("CONSIDER_COMPLETION",
|
|
"consider using a completion\n" . $herecurr);
|
|
}
|
|
|
|
# recommend kstrto* over simple_strto* and strict_strto*
|
|
if ($line =~ /\b((simple|strict)_(strto(l|ll|ul|ull)))\s*\(/) {
|
|
WARN("CONSIDER_KSTRTO",
|
|
"$1 is obsolete, use k$3 instead\n" . $herecurr);
|
|
}
|
|
|
|
# check for __initcall(), use device_initcall() explicitly please
|
|
if ($line =~ /^.\s*__initcall\s*\(/) {
|
|
WARN("USE_DEVICE_INITCALL",
|
|
"please use device_initcall() instead of __initcall()\n" . $herecurr);
|
|
}
|
|
|
|
# check for various ops structs, ensure they are const.
|
|
my $struct_ops = qr{acpi_dock_ops|
|
|
address_space_operations|
|
|
backlight_ops|
|
|
block_device_operations|
|
|
dentry_operations|
|
|
dev_pm_ops|
|
|
dma_map_ops|
|
|
extent_io_ops|
|
|
file_lock_operations|
|
|
file_operations|
|
|
hv_ops|
|
|
ide_dma_ops|
|
|
intel_dvo_dev_ops|
|
|
item_operations|
|
|
iwl_ops|
|
|
kgdb_arch|
|
|
kgdb_io|
|
|
kset_uevent_ops|
|
|
lock_manager_operations|
|
|
microcode_ops|
|
|
mtrr_ops|
|
|
neigh_ops|
|
|
nlmsvc_binding|
|
|
pci_raw_ops|
|
|
pipe_buf_operations|
|
|
platform_hibernation_ops|
|
|
platform_suspend_ops|
|
|
proto_ops|
|
|
rpc_pipe_ops|
|
|
seq_operations|
|
|
snd_ac97_build_ops|
|
|
soc_pcmcia_socket_ops|
|
|
stacktrace_ops|
|
|
sysfs_ops|
|
|
tty_operations|
|
|
usb_mon_operations|
|
|
wd_ops}x;
|
|
if ($line !~ /\bconst\b/ &&
|
|
$line =~ /\bstruct\s+($struct_ops)\b/) {
|
|
WARN("CONST_STRUCT",
|
|
"struct $1 should normally be const\n" .
|
|
$herecurr);
|
|
}
|
|
|
|
# use of NR_CPUS is usually wrong
|
|
# ignore definitions of NR_CPUS and usage to define arrays as likely right
|
|
if ($line =~ /\bNR_CPUS\b/ &&
|
|
$line !~ /^.\s*\s*#\s*if\b.*\bNR_CPUS\b/ &&
|
|
$line !~ /^.\s*\s*#\s*define\b.*\bNR_CPUS\b/ &&
|
|
$line !~ /^.\s*$Declare\s.*\[[^\]]*NR_CPUS[^\]]*\]/ &&
|
|
$line !~ /\[[^\]]*\.\.\.[^\]]*NR_CPUS[^\]]*\]/ &&
|
|
$line !~ /\[[^\]]*NR_CPUS[^\]]*\.\.\.[^\]]*\]/)
|
|
{
|
|
WARN("NR_CPUS",
|
|
"usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc\n" . $herecurr);
|
|
}
|
|
|
|
# check for %L{u,d,i} in strings
|
|
my $string;
|
|
while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) {
|
|
$string = substr($rawline, $-[1], $+[1] - $-[1]);
|
|
$string =~ s/%%/__/g;
|
|
if ($string =~ /(?<!%)%L[udi]/) {
|
|
WARN("PRINTF_L",
|
|
"\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
|
|
last;
|
|
}
|
|
}
|
|
|
|
# whine mightly about in_atomic
|
|
if ($line =~ /\bin_atomic\s*\(/) {
|
|
if ($realfile =~ m@^drivers/@) {
|
|
ERROR("IN_ATOMIC",
|
|
"do not use in_atomic in drivers\n" . $herecurr);
|
|
} elsif ($realfile !~ m@^kernel/@) {
|
|
WARN("IN_ATOMIC",
|
|
"use of in_atomic() is incorrect outside core kernel code\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# check for lockdep_set_novalidate_class
|
|
if ($line =~ /^.\s*lockdep_set_novalidate_class\s*\(/ ||
|
|
$line =~ /__lockdep_no_validate__\s*\)/ ) {
|
|
if ($realfile !~ m@^kernel/lockdep@ &&
|
|
$realfile !~ m@^include/linux/lockdep@ &&
|
|
$realfile !~ m@^drivers/base/core@) {
|
|
ERROR("LOCKDEP",
|
|
"lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
if ($line =~ /debugfs_create_file.*S_IWUGO/ ||
|
|
$line =~ /DEVICE_ATTR.*S_IWUGO/ ) {
|
|
WARN("EXPORTED_WORLD_WRITABLE",
|
|
"Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# If we have no input at all, then there is nothing to report on
|
|
# so just keep quiet.
|
|
if ($#rawlines == -1) {
|
|
exit(0);
|
|
}
|
|
|
|
# In mailback mode only produce a report in the negative, for
|
|
# things that appear to be patches.
|
|
if ($mailback && ($clean == 1 || !$is_patch)) {
|
|
exit(0);
|
|
}
|
|
|
|
# This is not a patch, and we are are in 'no-patch' mode so
|
|
# just keep quiet.
|
|
if (!$chk_patch && !$is_patch) {
|
|
exit(0);
|
|
}
|
|
|
|
if (!$is_patch) {
|
|
ERROR("NOT_UNIFIED_DIFF",
|
|
"Does not appear to be a unified-diff format patch\n");
|
|
}
|
|
if ($is_patch && $chk_signoff && $signoff == 0) {
|
|
ERROR("MISSING_SIGN_OFF",
|
|
"Missing Signed-off-by: line(s)\n");
|
|
}
|
|
|
|
print report_dump();
|
|
if ($summary && !($clean == 1 && $quiet == 1)) {
|
|
print "$filename " if ($summary_file);
|
|
print "total: $cnt_error errors, $cnt_warn warnings, " .
|
|
(($check)? "$cnt_chk checks, " : "") .
|
|
"$cnt_lines lines checked\n";
|
|
print "\n" if ($quiet == 0);
|
|
}
|
|
|
|
if ($quiet == 0) {
|
|
|
|
if ($^V lt 5.10.0) {
|
|
print("NOTE: perl $^V is not modern enough to detect all possible issues.\n");
|
|
print("An upgrade to at least perl v5.10.0 is suggested.\n\n");
|
|
}
|
|
|
|
# If there were whitespace errors which cleanpatch can fix
|
|
# then suggest that.
|
|
if ($rpt_cleaners) {
|
|
print "NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or\n";
|
|
print " scripts/cleanfile\n\n";
|
|
$rpt_cleaners = 0;
|
|
}
|
|
}
|
|
|
|
if ($quiet == 0 && keys %ignore_type) {
|
|
print "NOTE: Ignored message types:";
|
|
foreach my $ignore (sort keys %ignore_type) {
|
|
print " $ignore";
|
|
}
|
|
print "\n\n";
|
|
}
|
|
|
|
if ($clean == 1 && $quiet == 0) {
|
|
print "$vname has no obvious style problems and is ready for submission.\n"
|
|
}
|
|
if ($clean == 0 && $quiet == 0) {
|
|
print << "EOM";
|
|
$vname has style problems, please review.
|
|
|
|
If any of these errors are false positives, please report
|
|
them to the maintainer, see CHECKPATCH in MAINTAINERS.
|
|
EOM
|
|
}
|
|
|
|
return $clean;
|
|
}
|