forked from luck/tmp_suning_uos_patched
8381e04b90
scripts/checkpatch.pl should be executable, make it so. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Acked-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Joel Schopp <jschopp@austin.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
596 lines
15 KiB
Perl
Executable File
596 lines
15 KiB
Perl
Executable File
#!/usr/bin/perl -w
|
|
# (c) 2001, Dave Jones. <davej@codemonkey.org.uk> (the file handling bit)
|
|
# (c) 2005, Joel Scohpp <jschopp@austin.ibm.com> (the ugly bit)
|
|
# (c) 2007, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite, etc)
|
|
# Licensed under the terms of the GNU GPL License version 2
|
|
|
|
use strict;
|
|
|
|
my $P = $0;
|
|
|
|
my $V = '0.01';
|
|
|
|
use Getopt::Long qw(:config no_auto_abbrev);
|
|
|
|
my $quiet = 0;
|
|
my $tree = 1;
|
|
my $chk_signoff = 1;
|
|
my $chk_patch = 1;
|
|
GetOptions(
|
|
'q|quiet' => \$quiet,
|
|
'tree!' => \$tree,
|
|
'signoff!' => \$chk_signoff,
|
|
'patch!' => \$chk_patch,
|
|
) or exit;
|
|
|
|
my $exit = 0;
|
|
|
|
if ($#ARGV < 0) {
|
|
print "usage: patchstylecheckemail.pl [options] patchfile\n";
|
|
print "version: $V\n";
|
|
print "options: -q => quiet\n";
|
|
print " --no-tree => run without a kernel tree\n";
|
|
exit(1);
|
|
}
|
|
|
|
if ($tree && !top_of_kernel_tree()) {
|
|
print "Must be run from the top-level dir. of a kernel tree\n";
|
|
exit(2);
|
|
}
|
|
|
|
my @deprecated = ();
|
|
my $removal = 'Documentation/feature-removal-schedule.txt';
|
|
if ($tree && -f $removal) {
|
|
open(REMOVE, "<$removal") || die "$P: $removal: open failed - $!\n";
|
|
while (<REMOVE>) {
|
|
if (/^Files:\s+(.*\S)/) {
|
|
for my $file (split(/[, ]+/, $1)) {
|
|
if ($file =~ m@include/(.*)@) {
|
|
push(@deprecated, $1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
my @lines = ();
|
|
while (<>) {
|
|
chomp;
|
|
push(@lines, $_);
|
|
if (eof(ARGV)) {
|
|
if (!process($ARGV, @lines)) {
|
|
$exit = 1;
|
|
}
|
|
@lines = ();
|
|
}
|
|
}
|
|
|
|
exit($exit);
|
|
|
|
sub top_of_kernel_tree {
|
|
if ((-f "COPYING") && (-f "CREDITS") && (-f "Kbuild") &&
|
|
(-f "MAINTAINERS") && (-f "Makefile") && (-f "README") &&
|
|
(-d "Documentation") && (-d "arch") && (-d "include") &&
|
|
(-d "drivers") && (-d "fs") && (-d "init") && (-d "ipc") &&
|
|
(-d "kernel") && (-d "lib") && (-d "scripts")) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
sub expand_tabs {
|
|
my ($str) = @_;
|
|
|
|
my $res = '';
|
|
my $n = 0;
|
|
for my $c (split(//, $str)) {
|
|
if ($c eq "\t") {
|
|
$res .= ' ';
|
|
$n++;
|
|
for (; ($n % 8) != 0; $n++) {
|
|
$res .= ' ';
|
|
}
|
|
next;
|
|
}
|
|
$res .= $c;
|
|
$n++;
|
|
}
|
|
|
|
return $res;
|
|
}
|
|
|
|
sub cat_vet {
|
|
my ($vet) = @_;
|
|
|
|
$vet =~ s/\t/^I/;
|
|
$vet =~ s/$/\$/;
|
|
|
|
return $vet;
|
|
}
|
|
|
|
sub process {
|
|
my $filename = shift;
|
|
my @lines = @_;
|
|
|
|
my $linenr=0;
|
|
my $prevline="";
|
|
my $stashline="";
|
|
|
|
my $lineforcounting='';
|
|
my $indent;
|
|
my $previndent=0;
|
|
my $stashindent=0;
|
|
|
|
my $clean = 1;
|
|
my $signoff = 0;
|
|
my $is_patch = 0;
|
|
|
|
# Trace the real file/line as we go.
|
|
my $realfile = '';
|
|
my $realline = 0;
|
|
my $realcnt = 0;
|
|
my $here = '';
|
|
my $in_comment = 0;
|
|
my $first_line = 0;
|
|
|
|
foreach my $line (@lines) {
|
|
$linenr++;
|
|
|
|
#extract the filename as it passes
|
|
if ($line=~/^\+\+\+\s+(\S+)/) {
|
|
$realfile=$1;
|
|
$in_comment = 0;
|
|
next;
|
|
}
|
|
#extract the line range in the file after the patch is applied
|
|
if ($line=~/^\@\@ -\d+,\d+ \+(\d+)(,(\d+))? \@\@/) {
|
|
$is_patch = 1;
|
|
$first_line = 1;
|
|
$in_comment = 0;
|
|
$realline=$1-1;
|
|
if (defined $2) {
|
|
$realcnt=$3+1;
|
|
} else {
|
|
$realcnt=1+1;
|
|
}
|
|
next;
|
|
}
|
|
|
|
#track the line number as we move through the hunk
|
|
if ($line=~/^[ \+]/) {
|
|
$realline++;
|
|
$realcnt-- if ($realcnt != 0);
|
|
|
|
# track any sort of multi-line comment. Obviously if
|
|
# the added text or context do not include the whole
|
|
# comment we will not see it. Such is life.
|
|
#
|
|
# 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 ($first_line and $line =~ m@^.\s*\*@) {
|
|
$in_comment = 1;
|
|
}
|
|
if ($line =~ m@/\*@) {
|
|
$in_comment = 1;
|
|
}
|
|
if ($line =~ m@\*/@) {
|
|
$in_comment = 0;
|
|
}
|
|
|
|
$lineforcounting = $line;
|
|
$lineforcounting =~ s/^\+//;
|
|
$lineforcounting = expand_tabs($lineforcounting);
|
|
|
|
my ($white) = ($lineforcounting =~ /^(\s*)/);
|
|
$indent = length($white);
|
|
|
|
# Track the previous line.
|
|
($prevline, $stashline) = ($stashline, $line);
|
|
($previndent, $stashindent) = ($stashindent, $indent);
|
|
$first_line = 0;
|
|
}
|
|
|
|
#make up the handle for any error we report on this line
|
|
$here = "PATCH: $ARGV:$linenr:";
|
|
$here .= "\nFILE: $realfile:$realline:" if ($realcnt != 0);
|
|
|
|
my $herecurr = "$here\n$line\n\n";
|
|
my $hereprev = "$here\n$prevline\n$line\n\n";
|
|
|
|
#check the patch for a signoff:
|
|
if ($line =~ /^\s*Signed-off-by:\s/) {
|
|
$signoff++;
|
|
|
|
} elsif ($line =~ /^\s*signed-off-by:/i) {
|
|
if (!($line =~ /^\s*Signed-off-by:/)) {
|
|
print "use Signed-off-by:\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
if ($line =~ /^\s*signed-off-by:\S/i) {
|
|
print "need space after Signed-off-by:\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
}
|
|
|
|
#ignore lines not being added
|
|
if ($line=~/^[^\+]/) {next;}
|
|
|
|
# check we are in a valid source file *.[hcsS] if not then ignore this hunk
|
|
next if ($realfile !~ /\.[hcsS]$/);
|
|
|
|
#trailing whitespace
|
|
if ($line=~/\S\s+$/) {
|
|
my $herevet = "$here\n" . cat_vet($line) . "\n\n";
|
|
print "trailing whitespace\n";
|
|
print "$herevet";
|
|
$clean = 0;
|
|
}
|
|
#80 column limit
|
|
if (!($prevline=~/\/\*\*/) && length($lineforcounting) > 80) {
|
|
print "line over 80 characters\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# check we are in a valid source file *.[hc] if not then ignore this hunk
|
|
next if ($realfile !~ /\.[hc]$/);
|
|
|
|
# at the beginning of a line any tabs must come first and anything
|
|
# more than 8 must use tabs.
|
|
if ($line=~/^\+\s* \t\s*\S/ or $line=~/^\+\s* \s*/) {
|
|
my $herevet = "$here\n" . cat_vet($line) . "\n\n";
|
|
print "use tabs not spaces\n";
|
|
print "$herevet";
|
|
$clean = 0;
|
|
}
|
|
|
|
#
|
|
# The rest of our checks refer specifically to C style
|
|
# only apply those _outside_ comments.
|
|
#
|
|
next if ($in_comment);
|
|
|
|
# no C99 // comments
|
|
if ($line =~ m@//@ and !($line =~ m@\".*//.*\"@)) {
|
|
print "do not use C99 // comments\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# Remove comments from the line before processing.
|
|
$line =~ s@/\*.*\*/@@g;
|
|
$line =~ s@/\*.*@@;
|
|
$line =~ s@.*\*/@@;
|
|
$line =~ s@//.*@@;
|
|
|
|
#EXPORT_SYMBOL should immediately follow its function closing }.
|
|
if (($line =~ /EXPORT_SYMBOL.*\(.*\)/) ||
|
|
($line =~ /EXPORT_UNUSED_SYMBOL.*\(.*\)/)) {
|
|
if (($prevline !~ /^}/) &&
|
|
($prevline !~ /^\+}/) &&
|
|
($prevline !~ /^ }/)) {
|
|
print "EXPORT_SYMBOL(func); should immediately follow its function\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
}
|
|
|
|
# check for static initialisers.
|
|
if ($line=~/\s*static\s.*=\s+(0|NULL);/) {
|
|
print "do not initialise statics to 0 or NULL\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# check for new typedefs.
|
|
if ($line=~/\s*typedef\s/) {
|
|
print "do not add new typedefs\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# * goes on variable not on type
|
|
if ($line=~/[A-Za-z\d_]+\* [A-Za-z\d_]+/) {
|
|
print "\"foo* bar\" should be \"foo *bar\"\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# # no BUG() or BUG_ON()
|
|
# if ($line =~ /\b(BUG|BUG_ON)\b/) {
|
|
# print "Try to use WARN_ON & Recovery code rather than BUG() or BUG_ON()\n";
|
|
# print "$herecurr";
|
|
# $clean = 0;
|
|
# }
|
|
|
|
# printk should use KERN_* levels
|
|
if ($line =~ /\bprintk\((?!KERN_)/) {
|
|
print "printk() should include KERN_ facility level\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
#function brace can't be on same line, except for #defines of do while, or if closed on same line
|
|
if (($line=~/[A-Za-z\d_]+\**\s+\**[A-Za-z\d_]+\(.*\).* {/) and
|
|
!($line=~/\#define.*do\s{/) and !($line=~/}/)) {
|
|
print "braces following function declarations go on the next line\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
my $opline = $line;
|
|
$opline =~ s/^.//;
|
|
if (!($line=~/\#\s*include/)) {
|
|
# Check operator spacing.
|
|
my @elements = split(/(<<=|>>=|<=|>=|==|!=|\+=|-=|\*=|\/=|%=|\^=|\|=|&=|->|<<|>>|<|>|=|!|~|&&|\|\||,|\^|\+\+|--|;|&|\||\+|-|\*|\/\/|\/)/, $opline);
|
|
for (my $n = 0; $n < $#elements; $n += 2) {
|
|
# $wN says we have white-space before or after
|
|
# $sN says we have a separator before or after
|
|
# $oN says we have another operator before or after
|
|
my $w1 = $elements[$n] =~ /\s$/;
|
|
my $s1 = $elements[$n] =~ /(\[|\(|\s)$/;
|
|
my $o1 = $elements[$n] eq '';
|
|
my $op = $elements[$n + 1];
|
|
my $w2 = 1;
|
|
my $s2 = 1;
|
|
my $o2 = 0;
|
|
# If we have something after the operator handle it.
|
|
if (defined $elements[$n + 2]) {
|
|
$w2 = $elements[$n + 2] =~ /^\s/;
|
|
$s2 = $elements[$n + 2] =~ /^(\s|\)|\]|;)/;
|
|
$o2 = $elements[$n + 2] eq '';
|
|
}
|
|
|
|
# Generate the context.
|
|
my $at = "here: ";
|
|
for (my $m = $n; $m >= 0; $m--) {
|
|
if ($elements[$m] ne '') {
|
|
$at .= $elements[$m];
|
|
last;
|
|
}
|
|
}
|
|
$at .= $op;
|
|
for (my $m = $n + 2; defined $elements[$m]; $m++) {
|
|
if ($elements[$m] ne '') {
|
|
$at .= $elements[$m];
|
|
last;
|
|
}
|
|
}
|
|
|
|
##print "<$s1:$op:$s2> <$elements[$n]:$elements[$n + 1]:$elements[$n + 2]>\n";
|
|
# Skip things apparently in quotes.
|
|
next if ($line=~/\".*\Q$op\E.*\"/ or $line=~/\'\Q$op\E\'/);
|
|
|
|
# We need ; as an operator. // is a comment.
|
|
if ($op eq ';' or $op eq '//') {
|
|
|
|
# -> should have no spaces
|
|
} elsif ($op eq '->') {
|
|
if ($s1 or $s2) {
|
|
print "no spaces around that '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# , must have a space on the right.
|
|
} elsif ($op eq ',') {
|
|
if (!$s2) {
|
|
print "need space after that '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# unary ! and unary ~ are allowed no space on the right
|
|
} elsif ($op eq '!' or $op eq '~') {
|
|
if (!$s1 && !$o1) {
|
|
print "need space before that '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
if ($s2) {
|
|
print "no space after that '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# unary ++ and unary -- are allowed no space on one side.
|
|
} elsif ($op eq '++' or $op eq '--') {
|
|
if (($s1 && $s2) || ((!$s1 && !$o1) && (!$s2 && !$o2))) {
|
|
print "need space one side of that '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# & is both unary and binary
|
|
# unary:
|
|
# a &b
|
|
# binary (consistent spacing):
|
|
# a&b OK
|
|
# a & b OK
|
|
#
|
|
# boiling down to: if there is a space on the right then there
|
|
# should be one on the left.
|
|
#
|
|
# - is the same
|
|
#
|
|
# * is the same only adding:
|
|
# type:
|
|
# (foo *)
|
|
# (foo **)
|
|
#
|
|
} elsif ($op eq '&' or $op eq '-' or $op eq '*') {
|
|
if ($w2 and !$w1) {
|
|
print "need space before that '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# << and >> may either have or not have spaces both sides
|
|
} elsif ($op eq '<<' or $op eq '>>' or $op eq '+' or $op eq '/' or
|
|
$op eq '^' or $op eq '|')
|
|
{
|
|
if ($s1 != $s2) {
|
|
print "need consistent spacing around '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# All the others need spaces both sides.
|
|
} elsif (!$s1 or !$s2) {
|
|
print "need spaces around that '$op' $at\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
#need space before brace following if, while, etc
|
|
if ($line=~/\(.*\){/) {
|
|
print "need a space before the brace\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
#goto labels aren't indented, allow a single space however
|
|
if ($line=~/^.\s+[A-Za-z\d_]+:/ and
|
|
!($line=~/^. [A-Za-z\d_]+:/) and !($line=~/^.\s+default:/)) {
|
|
print "labels should not be indented\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# Need a space before open parenthesis after if, while etc
|
|
if ($line=~/(if|while|for|switch)\(/) {
|
|
print "need a space before the open parenthesis\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# Check for illegal assignment in if conditional.
|
|
if ($line=~/(if|while)\s*\(.*[^<>!=]=[^=].*\)/) {
|
|
print "do not use assignment in if condition\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
# Check for }<nl>else {, these must be at the same
|
|
# indent level to be relevant to each other.
|
|
if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ and
|
|
$previndent == $indent) {
|
|
print "else should follow close brace\n";
|
|
print "$hereprev";
|
|
$clean = 0;
|
|
}
|
|
|
|
# Check for switch () {<nl>case, these must be at the
|
|
# same indent. We will only catch the first one, as our
|
|
# context is very small but people tend to be consistent
|
|
# so we will catch them out more often than not.
|
|
if ($prevline=~/\s*switch\s*\(.*\)/ and $line=~/\s*case\s+/
|
|
and $previndent != $indent) {
|
|
print "switch and case should be at the same indent\n";
|
|
print "$hereprev";
|
|
$clean = 0;
|
|
}
|
|
|
|
#studly caps, commented out until figure out how to distinguish between use of existing and adding new
|
|
# if (($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$/) {
|
|
print("Whitepspace after \\ makes next lines useless\n");
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
|
|
#warn if <asm/foo.h> is #included and <linux/foo.h> is available.
|
|
if ($tree && $line =~ qr|\s*\#\s*include\s*\<asm\/(.*)\.h\>|) {
|
|
my $checkfile = "include/linux/$1.h";
|
|
if (-f $checkfile) {
|
|
print "Use #include <linux/$1.h> instead of <asm/$1.h>\n";
|
|
print $herecurr;
|
|
$clean = 0;
|
|
}
|
|
}
|
|
|
|
#if/while/etc brace do not go on next line, unless #defining a do while loop, or if that brace on the next line is for something else
|
|
if ($prevline=~/(if|while|for|switch)\s*\(/) {
|
|
my @opened = $prevline=~/\(/g;
|
|
my @closed = $prevline=~/\)/g;
|
|
my $nr_line = $linenr;
|
|
my $remaining = $realcnt;
|
|
my $next_line = $line;
|
|
my $extra_lines = 0;
|
|
my $display_segment = $prevline;
|
|
|
|
while ($remaining > 0 && scalar @opened > scalar @closed) {
|
|
$prevline .= $next_line;
|
|
$display_segment .= "\n" . $next_line;
|
|
$next_line = $lines[$nr_line];
|
|
$nr_line++;
|
|
$remaining--;
|
|
|
|
@opened = $prevline=~/\(/g;
|
|
@closed = $prevline=~/\)/g;
|
|
}
|
|
|
|
if (($prevline=~/(if|while|for|switch)\s*\(.*\)\s*$/) and ($next_line=~/{/) and
|
|
!($next_line=~/(if|while|for)/) and !($next_line=~/\#define.*do.*while/)) {
|
|
print "That { should be on the previous line\n";
|
|
print "$display_segment\n$next_line\n\n";
|
|
$clean = 0;
|
|
}
|
|
}
|
|
|
|
#multiline macros should be enclosed in a do while loop
|
|
if (($prevline=~/\#define.*\\/) and !($prevline=~/do\s+{/) and
|
|
!($prevline=~/\(\{/) and ($line=~/;\s*\\/) and
|
|
!($line=~/do.*{/) and !($line=~/\(\{/)) {
|
|
print "Macros with multiple statements should be enclosed in a do - while loop\n";
|
|
print "$hereprev";
|
|
$clean = 0;
|
|
}
|
|
|
|
# don't include deprecated include files
|
|
for my $inc (@deprecated) {
|
|
if ($line =~ m@\#\s*include\s*\<$inc>@) {
|
|
print "Don't use <$inc>: see Documentation/feature-removal-schedule.txt\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
}
|
|
|
|
# don't use kernel_thread()
|
|
if ($line =~ /\bkernel_thread\b/) {
|
|
print "Don't use kernel_thread(), use kthread(): see Documentation/feature-removal-schedule.txt\n";
|
|
print "$herecurr";
|
|
$clean = 0;
|
|
}
|
|
}
|
|
|
|
if ($chk_patch && !$is_patch) {
|
|
$clean = 0;
|
|
print "Does not appear to be a unified-diff format patch\n";
|
|
}
|
|
if ($is_patch && $chk_signoff && $signoff == 0) {
|
|
$clean = 0;
|
|
print "Missing Signed-off-by: line(s)\n";
|
|
}
|
|
|
|
if ($clean == 1 && $quiet == 0) {
|
|
print "Your patch has no obvious style problems and is ready for submission.\n"
|
|
}
|
|
if ($clean == 0 && $quiet == 0) {
|
|
print "Your patch 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;
|
|
}
|