forked from luck/tmp_suning_uos_patched
c2fdda0dfb
This version brings a large number of fixes which have built up over
the Christmas period. Mostly these are fixes for false positives, both
through improvments to unary checks and possible type detection. It
also brings new checks for while location and CVS keywords. Of note:
- a number of fixes to unary detection
- detection of a number of new forms of types to improve type matching
- better inline handling
- recognision of '%' as an operator
Andy Whitcroft (28):
Version: 0.13
unary detection: maintain bracket state across lines
move to pre-sanitising the entire file
the text of a #error statement should be treated like it is in quotes
line sanitisation needs to target double backslash correctly
tighten comment guestimation for lines starting ' * '
debug: add a debug framework
prevent unclosed single quotes from spreading
add % as an operator
the text of a #warning statement should be treated like it is in quotes
possible matching applies in typedefs
single statement block checks must not trigger when two or more statements
possible types: local variables may also be const
treat inline as a type attribute to even when out of place
possible types: sparse annotations are valid indicators
possible types: beef up the possible type testing
check for hanging while statements on the wrong line
utf8 checks need to occur against the raw lines
function brace checks should use any whitespece matches
comments should take up space in the line when sanitised
remove debugging from if assignment checks
possible types -- ensure we detect all pointer casts
fix tests for function spacing in the presence of #define
clean up the UTF-8 error message to be clearer
test-lib: invert the status report, output success counts
detect and report CVS keywords
tests: break out tests
Add $Id$ to the CVS keyword checks
Benny Halevy (1):
checkpatch.pl: recognize the #elif preprocessor directive
Geert Uytterhoeven (1):
print the filenames of patches where available
Mauro Carvalho Chehab (1):
Fix missing \n in checkpatch.pl
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1701 lines
45 KiB
Perl
Executable File
1701 lines
45 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# (c) 2001, Dave Jones. <davej@codemonkey.org.uk> (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, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite, etc)
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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 = '0.13';
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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_type = 0;
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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 $root;
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my %debug;
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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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'test-type!' => \$tst_type,
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'emacs!' => \$emacs,
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'terse!' => \$terse,
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'file!' => \$file,
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'subjective!' => \$check,
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'strict!' => \$check,
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'root=s' => \$root,
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'summary!' => \$summary,
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'mailback!' => \$mailback,
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'debug=s' => \%debug,
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) or exit;
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my $exit = 0;
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if ($#ARGV < 0) {
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print "usage: $P [options] patchfile\n";
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print "version: $V\n";
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print "options: -q => quiet\n";
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print " --no-tree => run without a kernel tree\n";
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print " --terse => one line per report\n";
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print " --emacs => emacs compile window format\n";
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print " --file => check a source file\n";
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print " --strict => enable more subjective tests\n";
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print " --root => path to the kernel tree root\n";
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exit(1);
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}
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my $dbg_values = 0;
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my $dbg_possible = 0;
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for my $key (keys %debug) {
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eval "\${dbg_$key} = '$debug{$key}';"
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}
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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{[A-Za-z_][A-Za-z\d_]*};
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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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fastcall
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}x;
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our $Attribute = qr{
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const|
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__read_mostly|
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__kprobes|
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__(?:mem|cpu|dev|)(?:initdata|init)
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}x;
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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 $Constant = qr{(?:[0-9]+|0x[0-9a-fA-F]+)[UL]*};
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our $Assignment = 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 $Declare;
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our @typeList = (
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qr{void},
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qr{char},
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qr{short},
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qr{int},
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qr{long},
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qr{unsigned},
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qr{float},
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qr{double},
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qr{bool},
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qr{long\s+int},
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qr{long\s+long},
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qr{long\s+long\s+int},
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qr{(?:__)?(?:u|s|be|le)(?:8|16|32|64)},
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qr{struct\s+$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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sub build_types {
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my $all = "(?: \n" . join("|\n ", @typeList) . "\n)";
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$NonptrType = qr{
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\b
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(?:const\s+)?
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(?:unsigned\s+)?
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$all
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(?:\s+$Sparse|\s+const)*
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\b
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}x;
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$Type = qr{
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\b$NonptrType\b
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(?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)?
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(?:\s+$Inline|\s+$Sparse|\s+$Attribute)*
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}x;
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$Declare = qr{(?:$Storage\s+)?$Type};
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}
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build_types();
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$chk_signoff = 0 if ($file);
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my @dep_includes = ();
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my @dep_functions = ();
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my $removal = "Documentation/feature-removal-schedule.txt";
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if ($tree && -f "$root/$removal") {
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open(REMOVE, "<$root/$removal") ||
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die "$P: $removal: open failed - $!\n";
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while (<REMOVE>) {
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if (/^Check:\s+(.*\S)/) {
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for my $entry (split(/[, ]+/, $1)) {
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if ($entry =~ m@include/(.*)@) {
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push(@dep_includes, $1);
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} elsif ($entry !~ m@/@) {
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push(@dep_functions, $entry);
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}
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}
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}
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}
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}
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my @rawlines = ();
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my @lines = ();
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my $vname;
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for my $filename (@ARGV) {
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if ($file) {
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open(FILE, "diff -u /dev/null $filename|") ||
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die "$P: $filename: diff failed - $!\n";
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} else {
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open(FILE, "<$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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$exit = 1;
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}
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@rawlines = ();
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}
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exit($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 . '/' . $check) {
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return 0;
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}
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}
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return 1;
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}
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sub expand_tabs {
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my ($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 $res;
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}
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sub copy_spacing {
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my ($str) = @_;
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my $res = '';
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for my $c (split(//, $str)) {
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if ($c eq "\t") {
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$res .= $c;
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} else {
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$res .= ' ';
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}
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}
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return $res;
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}
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sub line_stats {
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my ($line) = @_;
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# Drop the diff line leader and expand tabs
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$line =~ s/^.//;
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$line = expand_tabs($line);
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# Pick the indent from the front of the line.
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my ($white) = ($line =~ /^(\s*)/);
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return (length($line), length($white));
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}
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sub sanitise_line {
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my ($line) = @_;
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my $res = '';
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my $l = '';
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my $quote = '';
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my $qlen = 0;
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foreach my $c (split(//, $line)) {
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# The second backslash of a pair is not a "quote".
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if ($l eq "\\" && $c eq "\\") {
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$c = 'X';
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}
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if ($l ne "\\" && ($c eq "'" || $c eq '"')) {
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if ($quote eq '') {
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$quote = $c;
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$res .= $c;
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$l = $c;
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$qlen = 0;
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next;
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} elsif ($quote eq $c) {
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$quote = '';
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}
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}
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if ($quote eq "'" && $qlen > 1) {
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$quote = '';
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}
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if ($quote && $c ne "\t") {
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$res .= "X";
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$qlen++;
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} else {
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$res .= $c;
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}
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$l = $c;
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}
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# Clear out the comments.
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while ($res =~ m@(/\*.*?\*/)@) {
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substr($res, $-[1], $+[1] - $-[1]) = ' ' x ($+[1] - $-[1]);
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}
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if ($res =~ m@(/\*.*)@) {
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substr($res, $-[1], $+[1] - $-[1]) = ' ' x ($+[1] - $-[1]);
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}
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if ($res =~ m@^.(.*\*/)@) {
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substr($res, $-[1], $+[1] - $-[1]) = ' ' x ($+[1] - $-[1]);
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}
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# The pathname on a #include may be surrounded by '<' and '>'.
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if ($res =~ /^.#\s*include\s+\<(.*)\>/) {
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my $clean = 'X' x length($1);
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$res =~ s@\<.*\>@<$clean>@;
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# The whole of a #error is a string.
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} elsif ($res =~ /^.#\s*(?:error|warning)\s+(.*)\b/) {
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my $clean = 'X' x length($1);
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$res =~ s@(#\s*(?:error|warning)\s+).*@$1$clean@;
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}
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return $res;
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}
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sub ctx_statement_block {
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my ($linenr, $remain, $off) = @_;
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my $line = $linenr - 1;
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my $blk = '';
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my $soff = $off;
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my $coff = $off - 1;
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my $type = '';
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my $level = 0;
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my $c;
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my $len = 0;
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while (1) {
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#warn "CSB: blk<$blk>\n";
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# If we are about to drop off the end, pull in more
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# context.
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if ($off >= $len) {
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for (; $remain > 0; $line++) {
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next if ($lines[$line] =~ /^-/);
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$remain--;
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$blk .= $lines[$line] . "\n";
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$len = length($blk);
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$line++;
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last;
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}
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# Bail if there is no further context.
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#warn "CSB: blk<$blk> off<$off> len<$len>\n";
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if ($off == $len) {
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last;
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}
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}
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$c = substr($blk, $off, 1);
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#warn "CSB: c<$c> type<$type> level<$level>\n";
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# Statement ends at the ';' or a close '}' at the
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# outermost level.
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if ($level == 0 && $c eq ';') {
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last;
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}
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if (($type eq '' || $type eq '(') && $c eq '(') {
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$level++;
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$type = '(';
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}
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if ($type eq '(' && $c eq ')') {
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$level--;
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$type = ($level != 0)? '(' : '';
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if ($level == 0 && $coff < $soff) {
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$coff = $off;
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}
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}
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if (($type eq '' || $type eq '{') && $c eq '{') {
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$level++;
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$type = '{';
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}
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if ($type eq '{' && $c eq '}') {
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$level--;
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$type = ($level != 0)? '{' : '';
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if ($level == 0) {
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last;
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}
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}
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$off++;
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}
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my $statement = substr($blk, $soff, $off - $soff + 1);
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my $condition = substr($blk, $soff, $coff - $soff + 1);
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#warn "STATEMENT<$statement>\n";
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#warn "CONDITION<$condition>\n";
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return ($statement, $condition);
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}
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sub ctx_block_get {
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my ($linenr, $remain, $outer, $open, $close, $off) = @_;
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my $line;
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my $start = $linenr - 1;
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my $blk = '';
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my @o;
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my @c;
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my @res = ();
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my $level = 0;
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for ($line = $start; $remain > 0; $line++) {
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next if ($rawlines[$line] =~ /^-/);
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$remain--;
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$blk .= $rawlines[$line];
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foreach my $c (split(//, $rawlines[$line])) {
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##print "C<$c>L<$level><$open$close>O<$off>\n";
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if ($off > 0) {
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$off--;
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next;
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}
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if ($c eq $close && $level > 0) {
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$level--;
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last if ($level == 0);
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} elsif ($c eq $open) {
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$level++;
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}
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}
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if (!$outer || $level <= 1) {
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push(@res, $rawlines[$line]);
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}
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last if ($level == 0);
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}
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return ($level, @res);
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}
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sub ctx_block_outer {
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my ($linenr, $remain) = @_;
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my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0);
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return @r;
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}
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sub ctx_block {
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my ($linenr, $remain) = @_;
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my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0);
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return @r;
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}
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sub ctx_statement {
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my ($linenr, $remain, $off) = @_;
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my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off);
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return @r;
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}
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sub ctx_block_level {
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my ($linenr, $remain) = @_;
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return ctx_block_get($linenr, $remain, 0, '{', '}', 0);
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}
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sub ctx_statement_level {
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my ($linenr, $remain, $off) = @_;
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return ctx_block_get($linenr, $remain, 0, '(', ')', $off);
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}
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|
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sub ctx_locate_comment {
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my ($first_line, $end_line) = @_;
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|
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# Catch a comment on the end of the line itself.
|
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my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*$@);
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return $current_comment if (defined $current_comment);
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|
|
# Look through the context and try and figure out if there is a
|
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# comment.
|
|
my $in_comment = 0;
|
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$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 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_paren = 0;
|
|
my @av_paren_type;
|
|
|
|
sub annotate_reset {
|
|
$av_preprocessor = 0;
|
|
$av_paren = 0;
|
|
@av_paren_type = ();
|
|
}
|
|
|
|
sub annotate_values {
|
|
my ($stream, $type) = @_;
|
|
|
|
my $res;
|
|
my $cur = $stream;
|
|
|
|
print "$stream\n" if ($dbg_values > 1);
|
|
|
|
while (length($cur)) {
|
|
print " <$type> " if ($dbg_values > 1);
|
|
if ($cur =~ /^(\s+)/o) {
|
|
print "WS($1)\n" if ($dbg_values > 1);
|
|
if ($1 =~ /\n/ && $av_preprocessor) {
|
|
$av_preprocessor = 0;
|
|
$type = 'N';
|
|
}
|
|
|
|
} elsif ($cur =~ /^($Type)/) {
|
|
print "DECLARE($1)\n" if ($dbg_values > 1);
|
|
$type = 'T';
|
|
|
|
} elsif ($cur =~ /^(#\s*define\s*$Ident)(\(?)/o) {
|
|
print "DEFINE($1)\n" if ($dbg_values > 1);
|
|
$av_preprocessor = 1;
|
|
$av_paren_type[$av_paren] = 'N';
|
|
|
|
} elsif ($cur =~ /^(#\s*(?:ifdef|ifndef|if|else|elif|endif))/o) {
|
|
print "PRE($1)\n" if ($dbg_values > 1);
|
|
$av_preprocessor = 1;
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(\\\n)/o) {
|
|
print "PRECONT($1)\n" if ($dbg_values > 1);
|
|
|
|
} elsif ($cur =~ /^(sizeof)\s*(\()?/o) {
|
|
print "SIZEOF($1)\n" if ($dbg_values > 1);
|
|
if (defined $2) {
|
|
$av_paren_type[$av_paren] = 'V';
|
|
}
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(if|while|typeof|for)\b/o) {
|
|
print "COND($1)\n" if ($dbg_values > 1);
|
|
$av_paren_type[$av_paren] = 'N';
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~/^(return|case|else)/o) {
|
|
print "KEYWORD($1)\n" if ($dbg_values > 1);
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(\()/o) {
|
|
print "PAREN('$1')\n" if ($dbg_values > 1);
|
|
$av_paren++;
|
|
$type = 'N';
|
|
|
|
} elsif ($cur =~ /^(\))/o) {
|
|
$av_paren-- if ($av_paren > 0);
|
|
if (defined $av_paren_type[$av_paren]) {
|
|
$type = $av_paren_type[$av_paren];
|
|
undef $av_paren_type[$av_paren];
|
|
print "PAREN('$1') -> $type\n"
|
|
if ($dbg_values > 1);
|
|
} else {
|
|
print "PAREN('$1')\n" if ($dbg_values > 1);
|
|
}
|
|
|
|
} elsif ($cur =~ /^($Ident)\(/o) {
|
|
print "FUNC($1)\n" if ($dbg_values > 1);
|
|
$av_paren_type[$av_paren] = '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 =~ /^(;|{|}|\?|:|\[)/o) {
|
|
print "END($1)\n" if ($dbg_values > 1);
|
|
$type = 'N';
|
|
|
|
} elsif ($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 $res;
|
|
}
|
|
|
|
sub possible {
|
|
my ($possible) = @_;
|
|
|
|
#print "CHECK<$possible>\n";
|
|
if ($possible !~ /^(?:$Storage|$Type|DEFINE_\S+)$/ &&
|
|
$possible ne 'goto' && $possible ne 'return' &&
|
|
$possible ne 'struct' && $possible ne 'enum' &&
|
|
$possible ne 'case' && $possible ne 'else' &&
|
|
$possible ne 'typedef') {
|
|
warn "POSSIBLE: $possible\n" if ($dbg_possible);
|
|
push(@typeList, $possible);
|
|
build_types();
|
|
}
|
|
}
|
|
|
|
my $prefix = '';
|
|
|
|
my @report = ();
|
|
sub report {
|
|
my $line = $prefix . $_[0];
|
|
|
|
$line = (split('\n', $line))[0] . "\n" if ($terse);
|
|
|
|
push(@report, $line);
|
|
}
|
|
sub report_dump {
|
|
@report;
|
|
}
|
|
sub ERROR {
|
|
report("ERROR: $_[0]\n");
|
|
our $clean = 0;
|
|
our $cnt_error++;
|
|
}
|
|
sub WARN {
|
|
report("WARNING: $_[0]\n");
|
|
our $clean = 0;
|
|
our $cnt_warn++;
|
|
}
|
|
sub CHK {
|
|
if ($check) {
|
|
report("CHECK: $_[0]\n");
|
|
our $clean = 0;
|
|
our $cnt_chk++;
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
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 $prev_values = 'N';
|
|
|
|
# Pre-scan the patch sanitizing the lines.
|
|
# Pre-scan the patch looking for any __setup documentation.
|
|
#
|
|
my @setup_docs = ();
|
|
my $setup_docs = 0;
|
|
my $line;
|
|
foreach my $rawline (@rawlines) {
|
|
# Standardise the strings and chars within the input to
|
|
# simplify matching.
|
|
$line = sanitise_line($rawline);
|
|
push(@lines, $line);
|
|
|
|
##print "==>$rawline\n";
|
|
##print "-->$line\n";
|
|
|
|
if ($line=~/^\+\+\+\s+(\S+)/) {
|
|
$setup_docs = 0;
|
|
if ($1 =~ m@Documentation/kernel-parameters.txt$@) {
|
|
$setup_docs = 1;
|
|
}
|
|
next;
|
|
}
|
|
|
|
if ($setup_docs && $line =~ /^\+/) {
|
|
push(@setup_docs, $line);
|
|
}
|
|
}
|
|
|
|
$prefix = '';
|
|
|
|
foreach my $line (@lines) {
|
|
$linenr++;
|
|
|
|
my $rawline = $rawlines[$linenr - 1];
|
|
|
|
#extract the filename as it passes
|
|
if ($line=~/^\+\+\+\s+(\S+)/) {
|
|
$realfile=$1;
|
|
$realfile =~ s@^[^/]*/@@;
|
|
$in_comment = 0;
|
|
next;
|
|
}
|
|
#extract the line range in the file after the patch is applied
|
|
if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
|
|
$is_patch = 1;
|
|
$first_line = $linenr + 1;
|
|
$in_comment = 0;
|
|
$realline=$1-1;
|
|
if (defined $2) {
|
|
$realcnt=$3+1;
|
|
} else {
|
|
$realcnt=1+1;
|
|
}
|
|
annotate_reset();
|
|
$prev_values = 'N';
|
|
next;
|
|
}
|
|
|
|
# track the line number as we move through the hunk, note that
|
|
# new versions of GNU diff omit the leading space on completely
|
|
# blank context lines so we need to count that too.
|
|
if ($line =~ /^( |\+|$)/) {
|
|
$realline++;
|
|
$realcnt-- if ($realcnt != 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.
|
|
if ($linenr == $first_line) {
|
|
my $edge;
|
|
for (my $ln = $first_line; $ln < ($linenr + $realcnt); $ln++) {
|
|
($edge) = ($rawlines[$ln - 1] =~ m@(/\*|\*/)@);
|
|
last if (defined $edge);
|
|
}
|
|
if (defined $edge && $edge eq '*/') {
|
|
$in_comment = 1;
|
|
}
|
|
}
|
|
|
|
# Guestimate if this is a continuing comment. If this
|
|
# is the start of a diff block and this line starts
|
|
# ' *' then it is very likely a comment.
|
|
if ($linenr == $first_line and $rawline =~ m@^.\s* \*(?:\s|$)@) {
|
|
$in_comment = 1;
|
|
}
|
|
|
|
# Find the last comment edge on _this_ line.
|
|
$comment_edge = 0;
|
|
while (($rawline =~ m@(/\*|\*/)@g)) {
|
|
if ($1 eq '/*') {
|
|
$in_comment = 1;
|
|
} else {
|
|
$in_comment = 0;
|
|
}
|
|
$comment_edge = 1;
|
|
}
|
|
|
|
# Measure the line length and indent.
|
|
($length, $indent) = line_stats($rawline);
|
|
|
|
# Track the previous line.
|
|
($prevline, $stashline) = ($stashline, $line);
|
|
($previndent, $stashindent) = ($stashindent, $indent);
|
|
($prevrawline, $stashrawline) = ($stashrawline, $rawline);
|
|
|
|
#warn "ic<$in_comment> ce<$comment_edge> line<$line>\n";
|
|
|
|
} elsif ($realcnt == 1) {
|
|
$realcnt--;
|
|
}
|
|
|
|
#make up the handle for any error we report on this line
|
|
$here = "#$linenr: " if (!$file);
|
|
$here = "#$realline: " if ($file);
|
|
$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";
|
|
|
|
$prefix = "$filename:$realline: " if ($emacs && $file);
|
|
$prefix = "$filename:$linenr: " if ($emacs && !$file);
|
|
$cnt_lines++ if ($realcnt != 0);
|
|
|
|
#check the patch for a signoff:
|
|
if ($line =~ /^\s*signed-off-by:/i) {
|
|
# This is a signoff, if ugly, so do not double report.
|
|
$signoff++;
|
|
if (!($line =~ /^\s*Signed-off-by:/)) {
|
|
WARN("Signed-off-by: is the preferred form\n" .
|
|
$herecurr);
|
|
}
|
|
if ($line =~ /^\s*signed-off-by:\S/i) {
|
|
WARN("need space after Signed-off-by:\n" .
|
|
$herecurr);
|
|
}
|
|
}
|
|
|
|
# Check for wrappage within a valid hunk of the file
|
|
if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
|
|
ERROR("patch seems to be corrupt (line wrapped?)\n" .
|
|
$herecurr) if (!$emitted_corrupt++);
|
|
}
|
|
|
|
# UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php
|
|
if (($realfile =~ /^$/ || $line =~ /^\+/) &&
|
|
!($rawline =~ m/^(
|
|
[\x09\x0A\x0D\x20-\x7E] # ASCII
|
|
| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
|
|
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
|
|
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
|
|
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
|
|
| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
|
|
| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
|
|
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
|
|
)*$/x )) {
|
|
ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $herecurr);
|
|
}
|
|
|
|
#ignore lines being removed
|
|
if ($line=~/^-/) {next;}
|
|
|
|
# check we are in a valid source file if not then ignore this hunk
|
|
next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
|
|
|
|
#trailing whitespace
|
|
if ($line =~ /^\+.*\015/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
ERROR("DOS line endings\n" . $herevet);
|
|
|
|
} elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
ERROR("trailing whitespace\n" . $herevet);
|
|
}
|
|
#80 column limit
|
|
if ($line =~ /^\+/ && !($prevrawline=~/\/\*\*/) && $length > 80) {
|
|
WARN("line over 80 characters\n" . $herecurr);
|
|
}
|
|
|
|
# check for adding lines without a newline.
|
|
if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) {
|
|
WARN("adding a line without newline at end of file\n" . $herecurr);
|
|
}
|
|
|
|
# check we are in a valid source file *.[hc] if not then ignore this hunk
|
|
next if ($realfile !~ /\.[hc]$/);
|
|
|
|
# at the beginning of a line any tabs must come first and anything
|
|
# more than 8 must use tabs.
|
|
if ($rawline =~ /^\+\s* \t\s*\S/ ||
|
|
$rawline =~ /^\+\s* \s*/) {
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
ERROR("use tabs not spaces\n" . $herevet);
|
|
}
|
|
|
|
# check for RCS/CVS revision markers
|
|
if ($rawline =~ /\$(Revision|Log|Id)(?:\$|)/) {
|
|
WARN("CVS style keyword markers, these will _not_ be updated\n". $herecurr);
|
|
}
|
|
|
|
# The rest of our checks refer specifically to C style
|
|
# only apply those _outside_ comments. Only skip
|
|
# lines in the middle of comments.
|
|
next if (!$comment_edge && $in_comment);
|
|
|
|
# Check for potential 'bare' types
|
|
if ($realcnt) {
|
|
# Ignore goto labels.
|
|
if ($line =~ /$Ident:\*$/) {
|
|
|
|
# Ignore functions being called
|
|
} elsif ($line =~ /^.\s*$Ident\s*\(/) {
|
|
|
|
# definitions in global scope can only start with types
|
|
} elsif ($line =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b/) {
|
|
possible($1);
|
|
|
|
# declarations always start with types
|
|
} elsif ($prev_values eq 'N' && $line =~ /^.\s*(?:$Storage\s+)?(?:const\s+)?($Ident)\b(:?\s+$Sparse)?\s*\**\s*$Ident\s*(?:;|=)/) {
|
|
possible($1);
|
|
}
|
|
|
|
# any (foo ... *) is a pointer cast, and foo is a type
|
|
while ($line =~ /\(($Ident)(?:\s+$Sparse)*\s*\*+\s*\)/g) {
|
|
possible($1);
|
|
}
|
|
|
|
# Check for any sort of function declaration.
|
|
# int foo(something bar, other baz);
|
|
# void (*store_gdt)(x86_descr_ptr *);
|
|
if ($prev_values eq 'N' && $line =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/) {
|
|
my ($name_len) = length($1);
|
|
my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, $name_len);
|
|
my $ctx = join("\n", @ctx);
|
|
|
|
$ctx =~ s/\n.//;
|
|
substr($ctx, 0, $name_len + 1) = '';
|
|
$ctx =~ s/\)[^\)]*$//;
|
|
for my $arg (split(/\s*,\s*/, $ctx)) {
|
|
if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/ || $arg =~ /^($Ident)$/) {
|
|
|
|
possible($1);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#
|
|
# Checks which may be anchored in the context.
|
|
#
|
|
|
|
# Check for switch () and associated case and default
|
|
# statements should be at the same indent.
|
|
if ($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 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*\(|do\b|else\b)/ && $line !~ /^.#/) {
|
|
my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0);
|
|
my $ctx_ln = $linenr + $#ctx + 1;
|
|
my $ctx_cnt = $realcnt - $#ctx - 1;
|
|
my $ctx = join("\n", @ctx);
|
|
|
|
# Skip over any removed lines in the context following statement.
|
|
while ($ctx_cnt > 0 && $lines[$ctx_ln - 1] =~ /^-/) {
|
|
$ctx_ln++;
|
|
$ctx_cnt--;
|
|
}
|
|
##warn "line<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>";
|
|
|
|
if ($ctx !~ /{\s*/ && $ctx_cnt > 0 && $lines[$ctx_ln - 1] =~ /^\+\s*{/) {
|
|
ERROR("That open brace { should be on the previous line\n" .
|
|
"$here\n$ctx\n$lines[$ctx_ln - 1]");
|
|
}
|
|
if ($level == 0 && $ctx =~ /\)\s*\;\s*$/ && defined $lines[$ctx_ln - 1]) {
|
|
my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]);
|
|
if ($nindent > $indent) {
|
|
WARN("Trailing semicolon indicates no statements, indent implies otherwise\n" .
|
|
"$here\n$ctx\n$lines[$ctx_ln - 1]");
|
|
}
|
|
}
|
|
}
|
|
|
|
# Track the 'values' across context and added lines.
|
|
my $opline = $line; $opline =~ s/^./ /;
|
|
my $curr_values = annotate_values($opline . "\n", $prev_values);
|
|
$curr_values = $prev_values . $curr_values;
|
|
if ($dbg_values) {
|
|
my $outline = $opline; $outline =~ s/\t/ /g;
|
|
warn "--> .$outline\n";
|
|
warn "--> $curr_values\n";
|
|
}
|
|
$prev_values = substr($curr_values, -1);
|
|
|
|
#ignore lines not being added
|
|
if ($line=~/^[^\+]/) {next;}
|
|
|
|
# TEST: allow direct testing of the type matcher.
|
|
if ($tst_type && $line =~ /^.$Declare$/) {
|
|
ERROR("TEST: is type $Declare\n" . $herecurr);
|
|
next;
|
|
}
|
|
|
|
# check for initialisation to aggregates open brace on the next line
|
|
if ($prevline =~ /$Declare\s*$Ident\s*=\s*$/ &&
|
|
$line =~ /^.\s*{/) {
|
|
ERROR("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*include\s+[<"](.*)[">]}) {
|
|
my $path = $1;
|
|
if ($path =~ m{//}) {
|
|
ERROR("malformed #include filename\n" .
|
|
$herecurr);
|
|
}
|
|
}
|
|
|
|
# no C99 // comments
|
|
if ($line =~ m{//}) {
|
|
ERROR("do not use C99 // comments\n" . $herecurr);
|
|
}
|
|
# Remove C99 comments.
|
|
$line =~ s@//.*@@;
|
|
$opline =~ s@//.*@@;
|
|
|
|
#EXPORT_SYMBOL should immediately follow its function closing }.
|
|
if (($line =~ /EXPORT_SYMBOL.*\((.*)\)/) ||
|
|
($line =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) {
|
|
my $name = $1;
|
|
if (($prevline !~ /^}/) &&
|
|
($prevline !~ /^\+}/) &&
|
|
($prevline !~ /^ }/) &&
|
|
($prevline !~ /\b\Q$name\E(?:\s+$Attribute)?\s*(?:;|=)/)) {
|
|
WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# check for external initialisers.
|
|
if ($line =~ /^.$Type\s*$Ident\s*=\s*(0|NULL);/) {
|
|
ERROR("do not initialise externals to 0 or NULL\n" .
|
|
$herecurr);
|
|
}
|
|
# check for static initialisers.
|
|
if ($line =~ /\s*static\s.*=\s*(0|NULL);/) {
|
|
ERROR("do not initialise statics to 0 or NULL\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 !~ /\b__bitwise(?:__|)\b/) {
|
|
WARN("do not add new typedefs\n" . $herecurr);
|
|
}
|
|
|
|
# * goes on variable not on type
|
|
if ($line =~ m{\($NonptrType(\*+)(?:\s+const)?\)}) {
|
|
ERROR("\"(foo$1)\" should be \"(foo $1)\"\n" .
|
|
$herecurr);
|
|
|
|
} elsif ($line =~ m{\($NonptrType\s+(\*+)(?!\s+const)\s+\)}) {
|
|
ERROR("\"(foo $1 )\" should be \"(foo $1)\"\n" .
|
|
$herecurr);
|
|
|
|
} elsif ($line =~ m{$NonptrType(\*+)(?:\s+(?:$Attribute|$Sparse))?\s+[A-Za-z\d_]+}) {
|
|
ERROR("\"foo$1 bar\" should be \"foo $1bar\"\n" .
|
|
$herecurr);
|
|
|
|
} elsif ($line =~ m{$NonptrType\s+(\*+)(?!\s+(?:$Attribute|$Sparse))\s+[A-Za-z\d_]+}) {
|
|
ERROR("\"foo $1 bar\" should be \"foo $1bar\"\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 should be avoided, code should be for the version to which it is merged\n" . $herecurr);
|
|
}
|
|
|
|
# printk should use KERN_* levels. Note that follow on printk's on the
|
|
# same line do not need a level, so we use the current block context
|
|
# to try and find and validate the current printk. In summary the current
|
|
# printk includes all preceeding printk's which have no newline on the end.
|
|
# we assume the first bad printk is the one to report.
|
|
if ($line =~ /\bprintk\((?!KERN_)\s*"/) {
|
|
my $ok = 0;
|
|
for (my $ln = $linenr - 1; $ln >= $first_line; $ln--) {
|
|
#print "CHECK<$lines[$ln - 1]\n";
|
|
# we have a preceeding printk if it ends
|
|
# with "\n" ignore it, else it is to blame
|
|
if ($lines[$ln - 1] =~ m{\bprintk\(}) {
|
|
if ($rawlines[$ln - 1] !~ m{\\n"}) {
|
|
$ok = 1;
|
|
}
|
|
last;
|
|
}
|
|
}
|
|
if ($ok == 0) {
|
|
WARN("printk() should include KERN_ facility level\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*[A-Za-z\d_]+\(.*\).*\s{/) and
|
|
!($line=~/\#define.*do\s{/) and !($line=~/}/)) {
|
|
ERROR("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 '{' following $1 go on the same line\n" . $hereprev);
|
|
}
|
|
|
|
# check for spaces between functions and their parentheses.
|
|
while ($line =~ /($Ident)\s+\(/g) {
|
|
my $name = $1;
|
|
my $ctx = substr($line, 0, $-[1]);
|
|
|
|
# Ignore those directives where spaces _are_ permitted.
|
|
if ($name =~ /^(?:if|for|while|switch|return|volatile|__volatile__|__attribute__|format|__extension__|Copyright|case)$/) {
|
|
|
|
# cpp #define statements have non-optional spaces, ie
|
|
# if there is a space between the name and the open
|
|
# parenthesis it is simply not a parameter group.
|
|
} elsif ($ctx =~ /^.\#\s*define\s*$/) {
|
|
|
|
# If this whole things ends with a type its most
|
|
# likely a typedef for a function.
|
|
} elsif ("$ctx$name" =~ /$Type$/) {
|
|
|
|
} else {
|
|
WARN("no space between function name and open parenthesis '('\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]);
|
|
|
|
my $a = '';
|
|
$a = 'V' if ($elements[$n] ne '');
|
|
$a = 'W' if ($elements[$n] =~ /\s$/);
|
|
$a = 'B' if ($elements[$n] =~ /(\[|\()$/);
|
|
$a = 'O' if ($elements[$n] eq '');
|
|
$a = 'E' if ($elements[$n] eq '' && $n == 0);
|
|
|
|
my $op = $elements[$n + 1];
|
|
|
|
my $c = '';
|
|
if (defined $elements[$n + 2]) {
|
|
$c = 'V' if ($elements[$n + 2] ne '');
|
|
$c = 'W' if ($elements[$n + 2] =~ /^\s/);
|
|
$c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/);
|
|
$c = 'O' if ($elements[$n + 2] eq '');
|
|
$c = 'E' if ($elements[$n + 2] =~ /\s*\\$/);
|
|
} else {
|
|
$c = 'E';
|
|
}
|
|
|
|
# Pick up the preceeding 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 $ctx = "${a}x${c}";
|
|
|
|
my $at = "(ctx:$ctx)";
|
|
|
|
my $ptr = substr($blank, 0, $off) . "^";
|
|
my $hereptr = "$hereline$ptr\n";
|
|
|
|
# Classify operators into binary, unary, or
|
|
# definitions (* only) where they have more
|
|
# than one mode.
|
|
my $op_type = substr($curr_values, $off + 1, 1);
|
|
my $op_left = substr($curr_values, $off, 1);
|
|
my $is_unary;
|
|
if ($op_type eq 'T') {
|
|
$is_unary = 2;
|
|
} elsif ($op_left eq 'V') {
|
|
$is_unary = 0;
|
|
} else {
|
|
$is_unary = 1;
|
|
}
|
|
#if ($op eq '-' || $op eq '&' || $op eq '*') {
|
|
# print "UNARY: <$op_left$op_type $is_unary $a:$op:$c> <$ca:$op:$cc> <$unary_ctx>\n";
|
|
#}
|
|
|
|
# ; should have either the end of line or a space or \ after it
|
|
if ($op eq ';') {
|
|
if ($ctx !~ /.x[WEB]/ && $cc !~ /^\\/ &&
|
|
$cc !~ /^;/) {
|
|
ERROR("need space after that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# // is a comment
|
|
} elsif ($op eq '//') {
|
|
|
|
# -> should have no spaces
|
|
} elsif ($op eq '->') {
|
|
if ($ctx =~ /Wx.|.xW/) {
|
|
ERROR("no spaces around that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# , must have a space on the right.
|
|
} elsif ($op eq ',') {
|
|
if ($ctx !~ /.xW|.xE/ && $cc !~ /^}/) {
|
|
ERROR("need space after that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# '*' as part of a type definition -- reported already.
|
|
} elsif ($op eq '*' && $is_unary == 2) {
|
|
#warn "'*' is part of type\n";
|
|
|
|
# unary operators should have a space before and
|
|
# none after. May be left adjacent to another
|
|
# unary operator, or a cast
|
|
} elsif ($op eq '!' || $op eq '~' ||
|
|
($is_unary && ($op eq '*' || $op eq '-' || $op eq '&'))) {
|
|
if ($ctx !~ /[WEB]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
|
|
ERROR("need space before that '$op' $at\n" . $hereptr);
|
|
}
|
|
if ($ctx =~ /.xW/) {
|
|
ERROR("no space after that '$op' $at\n" . $hereptr);
|
|
}
|
|
|
|
# unary ++ and unary -- are allowed no space on one side.
|
|
} elsif ($op eq '++' or $op eq '--') {
|
|
if ($ctx !~ /[WOB]x[^W]/ && $ctx !~ /[^W]x[WOBE]/) {
|
|
ERROR("need space one side of that '$op' $at\n" . $hereptr);
|
|
}
|
|
if ($ctx =~ /Wx./ && $cc =~ /^;/) {
|
|
ERROR("no space before that '$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 !~ /VxV|WxW|VxE|WxE|VxO/) {
|
|
ERROR("need consistent spacing around '$op' $at\n" .
|
|
$hereptr);
|
|
}
|
|
|
|
# All the others need spaces both sides.
|
|
} elsif ($ctx !~ /[EW]x[WE]/) {
|
|
# Ignore email addresses <foo@bar>
|
|
if (!($op eq '<' && $cb =~ /$;\S+\@\S+>/) &&
|
|
!($op eq '>' && $cb =~ /<\S+\@\S+$;/)) {
|
|
ERROR("need spaces 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 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("declaring multiple variables together should be avoided\n" . $herecurr);
|
|
## }
|
|
## }
|
|
|
|
#need space before brace following if, while, etc
|
|
if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) ||
|
|
$line =~ /do{/) {
|
|
ERROR("need a space 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("need a space after that close brace '}'\n" . $herecurr);
|
|
}
|
|
|
|
# check spacing on square brackets
|
|
if ($line =~ /\[\s/ && $line !~ /\[\s*$/) {
|
|
ERROR("no space after that open square bracket '['\n" . $herecurr);
|
|
}
|
|
if ($line =~ /\s\]/) {
|
|
ERROR("no space before that close square bracket ']'\n" . $herecurr);
|
|
}
|
|
|
|
# check spacing on paretheses
|
|
if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ &&
|
|
$line !~ /for\s*\(\s+;/) {
|
|
ERROR("no space after that open parenthesis '('\n" . $herecurr);
|
|
}
|
|
if ($line =~ /\s\)/ && $line !~ /^.\s*\)/ &&
|
|
$line !~ /for\s*\(.*;\s+\)/) {
|
|
ERROR("no space 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("labels should not be indented\n" . $herecurr);
|
|
}
|
|
|
|
# Need a space before open parenthesis after if, while etc
|
|
if ($line=~/\b(if|while|for|switch)\(/) {
|
|
ERROR("need a space before the open parenthesis '('\n" . $herecurr);
|
|
}
|
|
|
|
# Check for illegal assignment in if conditional.
|
|
if ($line =~ /\bif\s*\(/) {
|
|
my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0);
|
|
|
|
if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/) {
|
|
ERROR("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)) = '';
|
|
$s =~ s/\n.*//g;
|
|
|
|
if (length($c) && $s !~ /^\s*({|;|\/\*.*\*\/)?\s*\\*\s*$/) {
|
|
ERROR("trailing statements should be on next line\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# if and else should not have general statements after it
|
|
if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/ &&
|
|
$1 !~ /^\s*(?:\sif|{|\\|$)/) {
|
|
ERROR("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 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 should follow close brace '}'\n" . $hereprev);
|
|
}
|
|
}
|
|
|
|
#studly caps, commented out until figure out how to distinguish between use of existing and adding new
|
|
# if (($line=~/[\w_][a-z\d]+[A-Z]/) and !($line=~/print/)) {
|
|
# print "No studly caps, use _\n";
|
|
# print "$herecurr";
|
|
# $clean = 0;
|
|
# }
|
|
|
|
#no spaces allowed after \ in define
|
|
if ($line=~/\#define.*\\\s$/) {
|
|
WARN("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*include\s*\<asm\/(.*)\.h\>}) {
|
|
my $checkfile = "$root/include/linux/$1.h";
|
|
if (-f $checkfile && $1 ne 'irq.h') {
|
|
CHK("Use #include <linux/$1.h> instead of <asm/$1.h>\n" .
|
|
$herecurr);
|
|
}
|
|
}
|
|
|
|
# multi-statement macros should be enclosed in a do while loop, grab the
|
|
# first statement and ensure its the whole macro if its not enclosed
|
|
# in a known goot container
|
|
if ($prevline =~ /\#define.*\\/ &&
|
|
$prevline !~/(?:do\s+{|\(\{|\{)/ &&
|
|
$line !~ /(?:do\s+{|\(\{|\{)/ &&
|
|
$line !~ /^.\s*$Declare\s/) {
|
|
# Grab the first statement, if that is the entire macro
|
|
# its ok. This may start either on the #define line
|
|
# or the one below.
|
|
my $ln = $linenr;
|
|
my $cnt = $realcnt;
|
|
my $off = 0;
|
|
|
|
# If the macro starts on the define line start
|
|
# grabbing the statement after the identifier
|
|
$prevline =~ m{^(.#\s*define\s*$Ident(?:\([^\)]*\))?\s*)(.*)\\\s*$};
|
|
##print "1<$1> 2<$2>\n";
|
|
if (defined $2 && $2 ne '') {
|
|
$off = length($1);
|
|
$ln--;
|
|
$cnt++;
|
|
while ($lines[$ln - 1] =~ /^-/) {
|
|
$ln--;
|
|
$cnt++;
|
|
}
|
|
}
|
|
my @ctx = ctx_statement($ln, $cnt, $off);
|
|
my $ctx_ln = $ln + $#ctx + 1;
|
|
my $ctx = join("\n", @ctx);
|
|
|
|
# Pull in any empty extension lines.
|
|
while ($ctx =~ /\\$/ &&
|
|
$lines[$ctx_ln - 1] =~ /^.\s*(?:\\)?$/) {
|
|
$ctx .= $lines[$ctx_ln - 1];
|
|
$ctx_ln++;
|
|
}
|
|
|
|
if ($ctx =~ /\\$/) {
|
|
if ($ctx =~ /;/) {
|
|
ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n");
|
|
} else {
|
|
ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
# check for redundant bracing round if etc
|
|
if ($line =~ /\b(if|while|for|else)\b/) {
|
|
# Locate the end of the opening statement.
|
|
my @control = ctx_statement($linenr, $realcnt, 0);
|
|
my $nr = $linenr + (scalar(@control) - 1);
|
|
my $cnt = $realcnt - (scalar(@control) - 1);
|
|
|
|
my $off = $realcnt - $cnt;
|
|
#print "$off: line<$line>end<" . $lines[$nr - 1] . ">\n";
|
|
|
|
# If this is is a braced statement group check it
|
|
if ($lines[$nr - 1] =~ /{\s*$/) {
|
|
my ($lvl, @block) = ctx_block_level($nr, $cnt);
|
|
|
|
my $stmt = join("\n", @block);
|
|
# Drop the diff line leader.
|
|
$stmt =~ s/\n./\n/g;
|
|
# Drop the code outside the block.
|
|
$stmt =~ s/(^[^{]*){\s*//;
|
|
my $before = $1;
|
|
$stmt =~ s/\s*}([^}]*$)//;
|
|
my $after = $1;
|
|
|
|
#print "block<" . join(' ', @block) . "><" . scalar(@block) . ">\n";
|
|
#print "stmt<$stmt>\n\n";
|
|
|
|
# Count the newlines, if there is only one
|
|
# then the block should not have {}'s.
|
|
my @lines = ($stmt =~ /\n/g);
|
|
my @statements = ($stmt =~ /;/g);
|
|
#print "lines<" . scalar(@lines) . ">\n";
|
|
#print "statements<" . scalar(@statements) . ">\n";
|
|
if ($lvl == 0 && scalar(@lines) == 0 &&
|
|
scalar(@statements) < 2 &&
|
|
$stmt !~ /{/ && $stmt !~ /\bif\b/ &&
|
|
$before !~ /}/ && $after !~ /{/) {
|
|
my $herectx = "$here\n" . join("\n", @control, @block[1 .. $#block]) . "\n";
|
|
shift(@block);
|
|
WARN("braces {} are not necessary for single statement blocks\n" . $herectx);
|
|
}
|
|
}
|
|
}
|
|
|
|
# don't include deprecated include files (uses RAW line)
|
|
for my $inc (@dep_includes) {
|
|
if ($rawline =~ m@\#\s*include\s*\<$inc>@) {
|
|
ERROR("Don't use <$inc>: see Documentation/feature-removal-schedule.txt\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# don't use deprecated functions
|
|
for my $func (@dep_functions) {
|
|
if ($line =~ /\b$func\b/) {
|
|
ERROR("Don't use $func(): see Documentation/feature-removal-schedule.txt\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# no volatiles please
|
|
my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b};
|
|
if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) {
|
|
WARN("Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr);
|
|
}
|
|
|
|
# SPIN_LOCK_UNLOCKED & RW_LOCK_UNLOCKED are deprecated
|
|
if ($line =~ /\b(SPIN_LOCK_UNLOCKED|RW_LOCK_UNLOCKED)/) {
|
|
ERROR("Use of $1 is deprecated: see Documentation/spinlocks.txt\n" . $herecurr);
|
|
}
|
|
|
|
# warn about #if 0
|
|
if ($line =~ /^.#\s*if\s+0\b/) {
|
|
CHK("if this code is redundant consider removing it\n" .
|
|
$herecurr);
|
|
}
|
|
|
|
# check for needless kfree() checks
|
|
if ($prevline =~ /\bif\s*\(([^\)]*)\)/) {
|
|
my $expr = $1;
|
|
if ($line =~ /\bkfree\(\Q$expr\E\);/) {
|
|
WARN("kfree(NULL) is safe this check is probabally not required\n" . $hereprev);
|
|
}
|
|
}
|
|
|
|
# warn about #ifdefs in C files
|
|
# if ($line =~ /^.#\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*(ifdef|ifndef|elif)\s\s+/) {
|
|
ERROR("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+;/) {
|
|
my $which = $1;
|
|
if (!ctx_has_comment($first_line, $linenr)) {
|
|
CHK("$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 without comment\n" . $herecurr);
|
|
}
|
|
}
|
|
# check of hardware specific defines
|
|
if ($line =~ m@^.#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
|
|
CHK("architecture specific defines should be avoided\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 keyword should sit between storage class and type\n" . $herecurr);
|
|
}
|
|
|
|
# Check for __inline__ and __inline, prefer inline
|
|
if ($line =~ /\b(__inline__|__inline)\b/) {
|
|
WARN("plain inline is preferred over $1\n" . $herecurr);
|
|
}
|
|
|
|
# check for new externs in .c files.
|
|
if ($line =~ /^.\s*extern\s/ && ($realfile =~ /\.c$/)) {
|
|
WARN("externs should be avoided in .c files\n" . $herecurr);
|
|
}
|
|
|
|
# checks for new __setup's
|
|
if ($rawline =~ /\b__setup\("([^"]*)"/) {
|
|
my $name = $1;
|
|
|
|
if (!grep(/$name/, @setup_docs)) {
|
|
CHK("__setup appears un-documented -- check Documentation/kernel-parameters.txt\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# check for pointless casting of kmalloc return
|
|
if ($line =~ /\*\s*\)\s*k[czm]alloc\b/) {
|
|
WARN("unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
|
|
}
|
|
}
|
|
|
|
# In mailback mode only produce a report in the negative, for
|
|
# things that appear to be patches.
|
|
if ($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 (!$is_patch) {
|
|
ERROR("Does not appear to be a unified-diff format patch\n");
|
|
}
|
|
if ($is_patch && $chk_signoff && $signoff == 0) {
|
|
ERROR("Missing Signed-off-by: line(s)\n");
|
|
}
|
|
|
|
print report_dump();
|
|
if ($summary) {
|
|
print "total: $cnt_error errors, $cnt_warn warnings, " .
|
|
(($check)? "$cnt_chk checks, " : "") .
|
|
"$cnt_lines lines checked\n";
|
|
print "\n" if ($quiet == 0);
|
|
}
|
|
|
|
if ($clean == 1 && $quiet == 0) {
|
|
print "$vname has no obvious style problems and is ready for submission.\n"
|
|
}
|
|
if ($clean == 0 && $quiet == 0) {
|
|
print "$vname has style problems, please review. If any of these errors\n";
|
|
print "are false positives report them to the maintainer, see\n";
|
|
print "CHECKPATCH in MAINTAINERS.\n";
|
|
}
|
|
return $clean;
|
|
}
|