mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-04 20:19:47 +08:00
d52784eb36
Fix the warning text too, per Randy. Cc: Alexander Shishkin <virtuoso@slind.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: WANG Cong <amwang@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
126 lines
2.7 KiB
Perl
126 lines
2.7 KiB
Perl
#!/usr/bin/perl -w
|
|
#
|
|
# headers_check.pl execute a number of trivial consistency checks
|
|
#
|
|
# Usage: headers_check.pl dir arch [files...]
|
|
# dir: dir to look for included files
|
|
# arch: architecture
|
|
# files: list of files to check
|
|
#
|
|
# The script reads the supplied files line by line and:
|
|
#
|
|
# 1) for each include statement it checks if the
|
|
# included file actually exists.
|
|
# Only include files located in asm* and linux* are checked.
|
|
# The rest are assumed to be system include files.
|
|
#
|
|
# 2) It is checked that prototypes does not use "extern"
|
|
#
|
|
# 3) Check for leaked CONFIG_ symbols
|
|
|
|
use strict;
|
|
|
|
my ($dir, $arch, @files) = @ARGV;
|
|
|
|
my $ret = 0;
|
|
my $line;
|
|
my $lineno = 0;
|
|
my $filename;
|
|
|
|
foreach my $file (@files) {
|
|
$filename = $file;
|
|
|
|
open(my $fh, '<', $filename)
|
|
or die "$filename: $!\n";
|
|
$lineno = 0;
|
|
while ($line = <$fh>) {
|
|
$lineno++;
|
|
&check_include();
|
|
&check_asm_types();
|
|
&check_sizetypes();
|
|
&check_declarations();
|
|
# Dropped for now. Too much noise &check_config();
|
|
}
|
|
close $fh;
|
|
}
|
|
exit $ret;
|
|
|
|
sub check_include
|
|
{
|
|
if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) {
|
|
my $inc = $1;
|
|
my $found;
|
|
$found = stat($dir . "/" . $inc);
|
|
if (!$found) {
|
|
$inc =~ s#asm/#asm-$arch/#;
|
|
$found = stat($dir . "/" . $inc);
|
|
}
|
|
if (!$found) {
|
|
printf STDERR "$filename:$lineno: included file '$inc' is not exported\n";
|
|
$ret = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
sub check_declarations
|
|
{
|
|
if ($line =~m/^(\s*extern|unsigned|char|short|int|long|void)\b/) {
|
|
printf STDERR "$filename:$lineno: " .
|
|
"userspace cannot reference function or " .
|
|
"variable defined in the kernel\n";
|
|
}
|
|
}
|
|
|
|
sub check_config
|
|
{
|
|
if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9_]+)[^a-zA-Z0-9_]/) {
|
|
printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n";
|
|
}
|
|
}
|
|
|
|
my $linux_asm_types;
|
|
sub check_asm_types
|
|
{
|
|
if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) {
|
|
return;
|
|
}
|
|
if ($lineno == 1) {
|
|
$linux_asm_types = 0;
|
|
} elsif ($linux_asm_types >= 1) {
|
|
return;
|
|
}
|
|
if ($line =~ m/^\s*#\s*include\s+<asm\/types.h>/) {
|
|
$linux_asm_types = 1;
|
|
printf STDERR "$filename:$lineno: " .
|
|
"include of <linux/types.h> is preferred over <asm/types.h>\n"
|
|
# Warn until headers are all fixed
|
|
#$ret = 1;
|
|
}
|
|
}
|
|
|
|
my $linux_types;
|
|
sub check_sizetypes
|
|
{
|
|
if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) {
|
|
return;
|
|
}
|
|
if ($lineno == 1) {
|
|
$linux_types = 0;
|
|
} elsif ($linux_types >= 1) {
|
|
return;
|
|
}
|
|
if ($line =~ m/^\s*#\s*include\s+<linux\/types.h>/) {
|
|
$linux_types = 1;
|
|
return;
|
|
}
|
|
if ($line =~ m/__[us](8|16|32|64)\b/) {
|
|
printf STDERR "$filename:$lineno: " .
|
|
"found __[us]{8,16,32,64} type " .
|
|
"without #include <linux/types.h>\n";
|
|
$linux_types = 2;
|
|
# Warn until headers are all fixed
|
|
#$ret = 1;
|
|
}
|
|
}
|
|
|