scripts/headers_check.pl

   1 #!/usr/bin/perl
   2 #
   3 # headers_check.pl execute a number of trivial consistency checks
   4 #
   5 # Usage: headers_check.pl dir [files...]
   6 # dir:   dir to look for included files
   7 # arch:  architecture
   8 # files: list of files to check
   9 #
  10 # The script reads the supplied files line by line and:
  11 #
  12 # 1) for each include statement it checks if the
  13 #    included file actually exists.
  14 #    Only include files located in asm* and linux* are checked.
  15 #    The rest are assumed to be system include files.
  16 #
  17 # 2) TODO: check for leaked CONFIG_ symbols
  18
  19 use strict;
  20 use warnings;
  21
  22 my ($dir, $arch, @files) = @ARGV;
  23
  24 my $ret = 0;
  25 my $line;
  26 my $lineno = 0;
  27 my $filename;
  28
  29 foreach my $file (@files) {
  30         $filename = $file;
  31         open(my $fh, '<', "$filename") or die "$filename: $!\n";
  32         $lineno = 0;
  33         while ($line = <$fh>) {
  34                 $lineno++;
  35                 check_include();
  36         }
  37         close $fh;
  38 }
  39 exit $ret;
  40
  41 sub check_include
  42 {
  43         if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) {
  44                 my $inc = $1;
  45                 my $found;
  46                 $found = stat($dir . "/" . $inc);
  47                 if (!$found) {
  48                         $inc =~ s#asm/#asm-$arch/#;
  49                         $found = stat($dir . "/" . $inc);
  50                 }
  51                 if (!$found) {
  52                         printf STDERR "$filename:$lineno: included file '$inc' is not exported\n";
  53                         $ret = 1;
  54                 }
  55         }
  56 }