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Jeremy Huntwork15a2ee72008-10-29 14:20:13 -07001#!/usr/bin/perl -w
Sam Ravnborg77124012008-06-15 21:41:09 +02002#
3# headers_install prepare the listed header files for use in
4# user space and copy the files to their destination.
5#
Sam Ravnborgdb1bec42008-06-16 21:29:38 +02006# Usage: headers_install.pl readdir installdir arch [files...]
7# readdir: dir to open files
8# installdir: dir to install the files
9# arch: current architecture
10# arch is used to force a reinstallation when the arch
11# changes because kbuild then detect a command line change.
12# files: list of files to check
Sam Ravnborg77124012008-06-15 21:41:09 +020013#
14# Step in preparation for users space:
15# 1) Drop all use of compiler.h definitions
16# 2) Drop include of compiler.h
17# 3) Drop all sections defined out by __KERNEL__ (using unifdef)
18
19use strict;
Sam Ravnborg77124012008-06-15 21:41:09 +020020
Sam Ravnborgdb1bec42008-06-16 21:29:38 +020021my ($readdir, $installdir, $arch, @files) = @ARGV;
Sam Ravnborg77124012008-06-15 21:41:09 +020022
Arnd Bergmannc01226c2009-09-21 16:37:12 +020023my $unifdef = "scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__";
Sam Ravnborg77124012008-06-15 21:41:09 +020024
25foreach my $file (@files) {
26 my $tmpfile = "$installdir/$file.tmp";
Stephen Hemmingerbae4cec2010-02-22 15:17:26 -080027
28 open(my $in, '<', "$readdir/$file")
29 or die "$readdir/$file: $!\n";
30 open(my $out, '>', $tmpfile)
31 or die "$tmpfile: $!\n";
32 while (my $line = <$in>) {
Sam Ravnborg77124012008-06-15 21:41:09 +020033 $line =~ s/([\s(])__user\s/$1/g;
34 $line =~ s/([\s(])__force\s/$1/g;
35 $line =~ s/([\s(])__iomem\s/$1/g;
36 $line =~ s/\s__attribute_const__\s/ /g;
37 $line =~ s/\s__attribute_const__$//g;
38 $line =~ s/^#include <linux\/compiler.h>//;
Mike Frysinger43071842008-12-27 03:23:15 -050039 $line =~ s/(^|\s)(inline)\b/$1__$2__/g;
40 $line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g;
41 $line =~ s/(^|\s|[(])(volatile)\b(\s|[(]|$)/$1__$2__$3/g;
Stephen Hemmingerbae4cec2010-02-22 15:17:26 -080042 printf {$out} "%s", $line;
Sam Ravnborg77124012008-06-15 21:41:09 +020043 }
Stephen Hemmingerbae4cec2010-02-22 15:17:26 -080044 close $out;
45 close $in;
46
Sam Ravnborg77124012008-06-15 21:41:09 +020047 system $unifdef . " $tmpfile > $installdir/$file";
48 unlink $tmpfile;
49}
50exit 0;