projects/linux·blob v2.6.38-rc8 · refs

57 lines · 1.7 KiB

1#!/usr/bin/perl -w
2#
3# headers_install prepare the listed header files for use in
4# user space and copy the files to their destination.
5#
6# 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
13#
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;
20
21my ($readdir, $installdir, $arch, @files) = @ARGV;
22
23my $unifdef = "scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__";
24
25foreach my $file (@files) {
26 my $tmpfile = "$installdir/$file.tmp";
27
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>) {
33 $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>//;
39 $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__$3/g;
42 printf {$out} "%s", $line;
43 }
44 close $out;
45 close $in;
46
47 system $unifdef . " $tmpfile > $installdir/$file";
48 # unifdef will exit 0 on success, and will exit 1 when the
49 # file was processed successfully but no changes were made,
50 # so abort only when it's higher than that.
51 my $e = $? >> 8;
52 if ($e > 1) {
53 die "$tmpfile: $!\n";
54 }
55 unlink $tmpfile;
56}
57exit 0;