my $P = $0;
$P =~ s@.*/@@g;
-my $V = '0.16';
+my $V = '0.19';
use Getopt::Long qw(:config no_auto_abbrev);
__kprobes|
__(?:mem|cpu|dev|)(?:initdata|init)
}x;
+our $Modifier;
our $Inline = qr{inline|__always_inline|noinline};
our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
our $Lval = qr{$Ident(?:$Member)*};
our $Type;
our $Declare;
+our $UTF8 = qr {
+ [\x09\x0A\x0D\x20-\x7E] # ASCII
+ | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
+ | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
+ | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
+ | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
+ | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
+ | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
+ | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
+}x;
+
our @typeList = (
qr{void},
- qr{char},
- qr{short},
- qr{int},
- qr{long},
+ qr{(?:unsigned\s+)?char},
+ qr{(?:unsigned\s+)?short},
+ qr{(?:unsigned\s+)?int},
+ qr{(?:unsigned\s+)?long},
+ qr{(?:unsigned\s+)?long\s+int},
+ qr{(?:unsigned\s+)?long\s+long},
+ qr{(?:unsigned\s+)?long\s+long\s+int},
qr{unsigned},
qr{float},
qr{double},
qr{bool},
- qr{long\s+int},
- qr{long\s+long},
- qr{long\s+long\s+int},
qr{(?:__)?(?:u|s|be|le)(?:8|16|32|64)},
qr{struct\s+$Ident},
qr{union\s+$Ident},
qr{${Ident}_handler},
qr{${Ident}_handler_fn},
);
+our @modifierList = (
+ qr{fastcall},
+);
sub build_types {
+ my $mods = "(?: \n" . join("|\n ", @modifierList) . "\n)";
my $all = "(?: \n" . join("|\n ", @typeList) . "\n)";
$NonptrType = qr{
- \b
(?:const\s+)?
- (?:unsigned\s+)?
+ (?:$mods\s+)?
(?:
- $all|
- (?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)
+ (?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)|
+ (?:${all}\b)
)
(?:\s+$Sparse|\s+const)*
- \b
}x;
$Type = qr{
- \b$NonptrType\b
+ $NonptrType
(?:\s*\*+\s*const|\s*\*+|(?:\s*\[\s*\])+)?
- (?:\s+$Inline|\s+$Sparse|\s+$Attribute)*
+ (?:\s+$Inline|\s+$Sparse|\s+$Attribute|\s+$mods)*
}x;
$Declare = qr{(?:$Storage\s+)?$Type};
+ $Modifier = qr{(?:$Attribute|$Sparse|$mods)};
}
build_types();
$off++;
next;
}
- if (substr($line, $off, 2) eq $sanitise_quote) {
+ if (substr($line, $off, 2) eq '*/') {
$sanitise_quote = '';
substr($res, $off, 2, "$;$;");
$off++;
}
# The pathname on a #include may be surrounded by '<' and '>'.
- if ($res =~ /^.#\s*include\s+\<(.*)\>/) {
+ if ($res =~ /^.\s*\#\s*include\s+\<(.*)\>/) {
my $clean = 'X' x length($1);
$res =~ s@\<.*\>@<$clean>@;
# The whole of a #error is a string.
- } elsif ($res =~ /^.#\s*(?:error|warning)\s+(.*)\b/) {
+ } elsif ($res =~ /^.\s*\#\s*(?:error|warning)\s+(.*)\b/) {
my $clean = 'X' x length($1);
- $res =~ s@(#\s*(?:error|warning)\s+).*@$1$clean@;
+ $res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@;
}
return $res;
while (length($cur)) {
@av_paren_type = ('E') if ($#av_paren_type < 0);
print " <" . join('', @av_paren_type) .
- "> <$type> " if ($dbg_values > 1);
+ "> <$type> <$av_pending>" if ($dbg_values > 1);
if ($cur =~ /^(\s+)/o) {
print "WS($1)\n" if ($dbg_values > 1);
if ($1 =~ /\n/ && $av_preprocessor) {
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);
+ } elsif ($cur =~ /^(\#\s*define\s*$Ident)(\(?)/o) {
+ print "DEFINE($1,$2)\n" if ($dbg_values > 1);
$av_preprocessor = 1;
- $av_pending = 'N';
+ push(@av_paren_type, $type);
+ if ($2 ne '') {
+ $av_pending = 'N';
+ }
+ $type = 'E';
- } elsif ($cur =~ /^(#\s*(?:ifdef|ifndef|if))/o) {
+ } 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 = 'N';
+ $type = 'E';
- } elsif ($cur =~ /^(#\s*(?:else|elif))/o) {
+ } 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 = 'N';
+ $type = 'E';
- } elsif ($cur =~ /^(#\s*(?:endif))/o) {
+ } elsif ($cur =~ /^(\#\s*(?:endif))/o) {
print "PRE_END($1)\n" if ($dbg_values > 1);
$av_preprocessor = 1;
# one does, and continue as if the #endif was not here.
pop(@av_paren_type);
push(@av_paren_type, $type);
- $type = 'N';
+ $type = 'E';
} elsif ($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 $2) {
sub possible {
my ($possible, $line) = @_;
- #print "CHECK<$possible>\n";
+ print "CHECK<$possible> ($line)\n" if ($dbg_possible > 1);
if ($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: $possible ($line)\n" if ($dbg_possible);
- push(@typeList, $possible);
+ $possible ne 'asm' &&
+ $possible !~ /^(typedef|struct|enum)\b/) {
+ # 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;
+ warn "MODIFIER: $possible ($line)\n" if ($dbg_possible);
+ push(@modifierList, $possible);
+
+ } else {
+ warn "POSSIBLE: $possible ($line)\n" if ($dbg_possible);
+ push(@typeList, $possible);
+ }
build_types();
}
}
} 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;
- for (my $ln = $linenr; $ln < ($linenr + $realcnt); $ln++) {
+ for (my $ln = $linenr + 1; $ln < ($linenr + $realcnt); $ln++) {
next if ($line =~ /^-/);
($edge) = ($rawlines[$ln - 1] =~ m@(/\*|\*/)@);
last if (defined $edge);
##print "COMMENT:$in_comment edge<$edge> $rawline\n";
sanitise_line_reset($in_comment);
- } elsif ($realcnt) {
+ } elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) {
# Standardise the strings and chars within the input to
- # simplify matching.
+ # simplify matching -- only bother with positive lines.
$line = sanitise_line($rawline);
}
push(@lines, $line);
# UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php
if (($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);
+ $rawline !~ m/^$UTF8*$/) {
+ my ($utf8_prefix) = ($rawline =~ /^($UTF8*)/);
+
+ my $blank = copy_spacing($rawline);
+ my $ptr = substr($blank, 0, length($utf8_prefix)) . "^";
+ my $hereptr = "$hereline$ptr\n";
+
+ ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
}
#ignore lines being removed
ERROR("trailing whitespace\n" . $herevet);
}
#80 column limit
- if ($line =~ /^\+/ && !($prevrawline=~/\/\*\*/) && $length > 80) {
+ if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ &&
+ $rawline !~ /^.\s*\*\s*\@$Ident\s/ && $length > 80)
+ {
WARN("line over 80 characters\n" . $herecurr);
}
if ($rawline =~ /^\+\s* \t\s*\S/ ||
$rawline =~ /^\+\s* \s*/) {
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
- ERROR("use tabs not spaces\n" . $herevet);
+ ERROR("code indent should use tabs where possible\n" . $herevet);
}
# check for RCS/CVS revision markers
}
# Check for potential 'bare' types
- if ($realcnt) {
- my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0);
- $s =~ s/\n./ /g;
- $s =~ s/{.*$//;
+ my ($stat, $cond);
+ if ($realcnt && $line =~ /.\s*\S/) {
+ ($stat, $cond) = ctx_statement_block($linenr,
+ $realcnt, 0);
+ $stat =~ s/\n./\n /g;
+ $cond =~ s/\n./\n /g;
+
+ my $s = $stat;
+ $s =~ s/{.*$//s;
# Ignore goto labels.
- if ($s =~ /$Ident:\*$/) {
+ if ($s =~ /$Ident:\*$/s) {
# Ignore functions being called
- } elsif ($s =~ /^.\s*$Ident\s*\(/) {
-
- # definitions in global scope can only start with types
- } elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b/) {
- possible($1, $s);
+ } elsif ($s =~ /^.\s*$Ident\s*\(/s) {
# declarations always start with types
- } elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:const\s+)?($Ident)\b(:?\s+$Sparse)?\s*\**\s*$Ident\s*(?:;|=|,)/) {
- possible($1, $s);
+ } elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?((?:\s*$Ident)+)\b(?:\s+$Sparse)?\s*\**\s*(?:$Ident|\(\*[^\)]*\))\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) {
+ possible($1, "B:" . $s);
}
# any (foo ... *) is a pointer cast, and foo is a type
- while ($s =~ /\(($Ident)(?:\s+$Sparse)*\s*\*+\s*\)/g) {
- possible($1, $s);
+ while ($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*)\(/) {
+ if ($prev_values eq 'E' && $s =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/s) {
my ($name_len) = length($1);
my $ctx = $s;
$ctx =~ s/\)[^\)]*$//;
for my $arg (split(/\s*,\s*/, $ctx)) {
- if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/ || $arg =~ /^($Ident)$/) {
+ if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/s || $arg =~ /^($Ident)$/s) {
- possible($1, $s);
+ possible($1, "D:" . $s);
}
}
}
# if/while/etc brace do not go on next line, unless defining a do while loop,
# or if that brace on the next line is for something else
- if ($line =~ /(.*)\b((?:if|while|for|switch)\s*\(|do\b|else\b)/ && $line !~ /^.#/) {
+ if ($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, $realcnt, 0);
if ($ctx !~ /{\s*/ && defined($lines[$ctx_ln -1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/) {
ERROR("that open brace { should be on the previous line\n" .
- "$here\n$ctx\n$lines[$ctx_ln - 1]");
+ "$here\n$ctx\n$lines[$ctx_ln - 1]\n");
}
if ($level == 0 && $pre_ctx !~ /}\s*while\s*\($/ &&
$ctx =~ /\)\s*\;\s*$/ &&
my ($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[$ctx_ln - 1]");
+ "$here\n$ctx\n$lines[$ctx_ln - 1]\n");
}
}
}
#
# check for malformed paths in #include statements (uses RAW line)
- if ($rawline =~ m{^.#\s*include\s+[<"](.*)[">]}) {
+ if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) {
my $path = $1;
if ($path =~ m{//}) {
ERROR("malformed #include filename\n" .
($prevline !~ /^ }/) &&
($prevline !~ /^.DECLARE_$Ident\(\Q$name\E\)/) &&
($prevline !~ /^.LIST_HEAD\(\Q$name\E\)/) &&
+ ($prevline !~ /^.$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(/) &&
($prevline !~ /\b\Q$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);/) {
+ if ($line =~ /^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) {
ERROR("do not initialise externals to 0 or NULL\n" .
$herecurr);
}
# check for static initialisers.
- if ($line =~ /\s*static\s.*=\s*(0|NULL);/) {
+ if ($line =~ /\s*static\s.*=\s*(0|NULL|false)\s*;/) {
ERROR("do not initialise statics to 0 or NULL\n" .
$herecurr);
}
# make sense.
if ($line =~ /\btypedef\s/ &&
$line !~ /\btypedef\s+$Type\s+\(\s*\*?$Ident\s*\)\s*\(/ &&
+ $line !~ /\btypedef\s+$Type\s+$Ident\s*\(/ &&
$line !~ /\b__bitwise(?:__|)\b/) {
WARN("do not add new typedefs\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=~/}/)) {
+ if (($line=~/$Type\s*$Ident\(.*\).*\s{/) and
+ !($line=~/\#\s*define.*do\s{/) and !($line=~/}/)) {
ERROR("open brace '{' following function declarations go on the next line\n" . $herecurr);
}
# cpp #define statements have non-optional spaces, ie
# if there is a space between the name and the open
# parenthesis it is simply not a parameter group.
- } elsif ($ctx_before =~ /^.\#\s*define\s*$/) {
+ } elsif ($ctx_before =~ /^.\s*\#\s*define\s*$/) {
# cpp #elif statement condition may start with a (
- } elsif ($ctx =~ /^.\#\s*elif\s*$/) {
+ } elsif ($ctx =~ /^.\s*\#\s*elif\s*$/) {
# If this whole things ends with a type its most
# likely a typedef for a function.
if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
ERROR("space required before that '$op' $at\n" . $hereptr);
}
- if ($ctx =~ /.xW/) {
+ if ($op eq '*' && $cc =~/\s*const\b/) {
+ # A unary '*' may be const
+
+ } elsif ($ctx =~ /.xW/) {
ERROR("space prohibited after that '$op' $at\n" . $hereptr);
}
ERROR("space prohibited before that close square bracket ']'\n" . $herecurr);
}
-# check spacing on paretheses
+# check spacing on parentheses
if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ &&
$line !~ /for\s*\(\s+;/) {
ERROR("space prohibited after that open parenthesis '('\n" . $herecurr);
}
if ($line =~ /(\s+)\)/ && $line !~ /^.\s*\)/ &&
- $line !~ /for\s*\(.*;\s+\)/) {
+ $line !~ /for\s*\(.*;\s+\)/ &&
+ $line !~ /:\s+\)/) {
ERROR("space prohibited before that close parenthesis ')'\n" . $herecurr);
}
WARN("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 = $2;
+
+ # Flatten any parentheses and braces
+ while ($value =~ s/\([^\(\)]*\)/1/) {
+ }
+
+ if ($value =~ /^(?:$Ident|-?$Constant)$/) {
+ ERROR("return is not a function, parentheses are not required\n" . $herecurr);
+
+ } elsif ($spacing !~ /\s+/) {
+ ERROR("space required before the open parenthesis '('\n" . $herecurr);
+ }
+ }
+
# Need a space before open parenthesis after if, while etc
if ($line=~/\b(if|while|for|switch)\(/) {
ERROR("space required before the open parenthesis '('\n" . $herecurr);
# Check for illegal assignment in if conditional.
if ($line =~ /\bif\s*\(/) {
- my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0);
+ my ($s, $c) = ($stat, $cond);
if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/) {
ERROR("do not use assignment in if condition\n" . $herecurr);
$s =~ s/\n.*//g;
$s =~ s/$;//g; # Remove any comments
if (length($c) && $s !~ /^\s*({|;|)\s*\\*\s*$/ &&
- $c !~ /^.\#\s*if/)
+ $c !~ /^.\s*\#\s*if/)
{
ERROR("trailing statements should be on next line\n" . $herecurr);
}
# }
#no spaces allowed after \ in define
- if ($line=~/\#define.*\\\s$/) {
+ if ($line=~/\#\s*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 && $1 ne 'irq.h') {
+ if ($tree && $rawline =~ m{^.\s*\#\s*include\s*\<asm\/(.*)\.h\>}) {
+ my $checkfile = "include/linux/$1.h";
+ if (-f "$root/$checkfile" && $realfile ne $checkfile &&
+ $1 ne 'irq')
+ {
WARN("Use #include <linux/$1.h> instead of <asm/$1.h>\n" .
$herecurr);
}
# multi-statement macros should be enclosed in a do while loop, grab the
# first statement and ensure its the whole macro if its not enclosed
# in a known good container
- if ($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.
+ if ($line =~ /^.\s*\#\s*define\s*$Ident(\()?/) {
my $ln = $linenr;
my $cnt = $realcnt;
- my $off = 0;
+ my ($off, $dstat, $dcond, $rest);
+ my $ctx = '';
- # 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 $args = defined($1);
+
+ # Find the end of the macro and limit our statement
+ # search to that.
+ while ($cnt > 0 && defined $lines[$ln - 1] &&
+ $lines[$ln - 1] =~ /^(?:-|..*\\$)/)
+ {
+ $ctx .= $rawlines[$ln - 1] . "\n";
+ $ln++;
+ $cnt--;
}
- my @ctx = ctx_statement($ln, $cnt, $off);
- my $ctx_ln = $ln + $#ctx + 1;
- my $ctx = join("\n", @ctx);
+ $ctx .= $rawlines[$ln - 1];
+
+ ($dstat, $dcond, $ln, $cnt, $off) =
+ ctx_statement_block($linenr, $ln - $linenr + 1, 0);
+ #print "dstat<$dstat> dcond<$dcond> cnt<$cnt> off<$off>\n";
+ #print "LINE<$lines[$ln]> len<" . length($lines[$ln]) . "\n";
+
+ # Extract the remainder of the define (if any) and
+ # rip off surrounding spaces, and trailing \'s.
+ $rest = '';
+ if (defined $lines[$ln - 1] &&
+ $off > length($lines[$ln - 1]))
+ {
+ $ln++;
+ $cnt--;
+ $off = 0;
+ }
+ while ($cnt > 0) {
+ $rest .= substr($lines[$ln - 1], $off) . "\n";
+ $ln++;
+ $cnt--;
+ $off = 0;
+ }
+ $rest =~ s/\\\n.//g;
+ $rest =~ s/^\s*//s;
+ $rest =~ s/\s*$//s;
- # Pull in any empty extension lines.
- while ($ctx =~ /\\$/ &&
- $lines[$ctx_ln - 1] =~ /^.\s*(?:\\)?$/) {
- $ctx .= $lines[$ctx_ln - 1];
- $ctx_ln++;
+ # Clean up the original statement.
+ if ($args) {
+ substr($dstat, 0, length($dcond), '');
+ } else {
+ $dstat =~ s/^.\s*\#\s*define\s+$Ident\s*//;
}
+ $dstat =~ s/\\\n.//g;
+ $dstat =~ s/^\s*//s;
+ $dstat =~ s/\s*$//s;
- if ($ctx =~ /\\$/) {
- if ($ctx =~ /;/) {
+ # Flatten any parentheses and braces
+ while ($dstat =~ s/\([^\(\)]*\)/1/) {
+ }
+ while ($dstat =~ s/\{[^\{\}]*\}/1/) {
+ }
+
+ my $exceptions = qr{
+ $Declare|
+ module_param_named|
+ MODULE_PARAM_DESC|
+ DECLARE_PER_CPU|
+ DEFINE_PER_CPU|
+ __typeof__\(
+ }x;
+ if ($rest ne '') {
+ if ($rest !~ /while\s*\(/ &&
+ $dstat !~ /$exceptions/)
+ {
ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n");
- } else {
+ }
+
+ } elsif ($ctx !~ /;/) {
+ if ($dstat ne '' &&
+ $dstat !~ /^(?:$Ident|-?$Constant)$/ &&
+ $dstat !~ /$exceptions/ &&
+ $dstat =~ /$Operators/)
+ {
ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n");
}
}
# don't include deprecated include files (uses RAW line)
for my $inc (@dep_includes) {
- if ($rawline =~ m@\#\s*include\s*\<$inc>@) {
+ if ($rawline =~ m@^.\s*\#\s*include\s*\<$inc>@) {
ERROR("Don't use <$inc>: see Documentation/feature-removal-schedule.txt\n" . $herecurr);
}
}
}
# warn about #if 0
- if ($line =~ /^.#\s*if\s+0\b/) {
+ if ($line =~ /^.\s*\#\s*if\s+0\b/) {
CHK("if this code is redundant consider removing it\n" .
$herecurr);
}
WARN("kfree(NULL) is safe this check is probabally not required\n" . $hereprev);
}
}
-# check for needless usb_free_urb() checks
- if ($prevline =~ /\bif\s*\(([^\)]*)\)/) {
- my $expr = $1;
- if ($line =~ /\busb_free_urb\(\Q$expr\E\);/) {
- WARN("usb_free_urb(NULL) is safe this check is probabally not required\n" . $hereprev);
- }
- }
# warn about #ifdefs in C files
-# if ($line =~ /^.#\s*if(|n)def/ && ($realfile =~ /\.c$/)) {
+# 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*(ifdef|ifndef|elif)\s\s+/) {
+ if ($line =~ /^.\s*\#\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+;/) {
+ 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("$1 definition without comment\n" . $herecurr);
}
}
# check of hardware specific defines
- if ($line =~ m@^.#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
+ if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
CHK("architecture specific defines should be avoided\n" . $herecurr);
}
}
# check for new externs in .c files.
- if ($line =~ /^.\s*extern\s/ && ($realfile =~ /\.c$/)) {
+ 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("externs should be avoided in .c files\n" . $herecurr);
+ }
+
+ if ($paren_space =~ /\n/) {
+ WARN("arguments for function declarations should follow identifier\n" . $herecurr);
+ }
+
+ } elsif ($realfile =~ /\.c$/ && defined $stat &&
+ $stat =~ /^.\s*extern\s+/)
+ {
WARN("externs should be avoided in .c files\n" . $herecurr);
}
}
# check for semaphores used as mutexes
- if ($line =~ /\b(DECLARE_MUTEX|init_MUTEX)\s*\(/) {
+ if ($line =~ /^.\s*(DECLARE_MUTEX|init_MUTEX)\s*\(/) {
WARN("mutexes are preferred for single holder semaphores\n" . $herecurr);
}
# check for semaphores used as mutexes
- if ($line =~ /\binit_MUTEX_LOCKED\s*\(/) {
+ if ($line =~ /^.\s*init_MUTEX_LOCKED\s*\(/) {
WARN("consider using a completion\n" . $herecurr);
}
# recommend strict_strto* over simple_strto*
# use of NR_CPUS is usually wrong
# ignore definitions of NR_CPUS and usage to define arrays as likely right
if ($line =~ /\bNR_CPUS\b/ &&
- $line !~ /^.#\s*define\s+NR_CPUS\s+/ &&
- $line !~ /^.\s*$Declare\s.*\[[^\]]*NR_CPUS[^\]]*\]/)
+ $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("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] - $-[1]);
+ if ($string =~ /(?<!%)%L[udi]/) {
+ WARN("\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
+ last;
+ }
+ }
}
# If we have no input at all, then there is nothing to report on
projects / cascardo / linux.git / blobdiff