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Commit | Line | Data |
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15a2ee74 | 1 | #!/usr/bin/perl -w |
7712401a SR |
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 | # | |
46b8af50 MF |
17 | # 2) It is checked that prototypes does not use "extern" |
18 | # | |
7e557a25 | 19 | # 3) Check for leaked CONFIG_ symbols |
7712401a SR |
20 | |
21 | use strict; | |
7712401a SR |
22 | |
23 | my ($dir, $arch, @files) = @ARGV; | |
24 | ||
25 | my $ret = 0; | |
26 | my $line; | |
27 | my $lineno = 0; | |
28 | my $filename; | |
29 | ||
30 | foreach my $file (@files) { | |
15a2ee74 | 31 | local *FH; |
7712401a | 32 | $filename = $file; |
15a2ee74 | 33 | open(FH, "<$filename") or die "$filename: $!\n"; |
7712401a | 34 | $lineno = 0; |
15a2ee74 | 35 | while ($line = <FH>) { |
7712401a SR |
36 | $lineno++; |
37 | check_include(); | |
46b8af50 | 38 | check_prototypes(); |
7e557a25 | 39 | check_config(); |
7712401a | 40 | } |
15a2ee74 | 41 | close FH; |
7712401a SR |
42 | } |
43 | exit $ret; | |
44 | ||
45 | sub check_include | |
46 | { | |
47 | if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) { | |
48 | my $inc = $1; | |
49 | my $found; | |
50 | $found = stat($dir . "/" . $inc); | |
51 | if (!$found) { | |
52 | $inc =~ s#asm/#asm-$arch/#; | |
53 | $found = stat($dir . "/" . $inc); | |
54 | } | |
55 | if (!$found) { | |
56 | printf STDERR "$filename:$lineno: included file '$inc' is not exported\n"; | |
57 | $ret = 1; | |
58 | } | |
59 | } | |
60 | } | |
46b8af50 MF |
61 | |
62 | sub check_prototypes | |
63 | { | |
64 | if ($line =~ m/^\s*extern\b/) { | |
65 | printf STDERR "$filename:$lineno: extern's make no sense in userspace\n"; | |
66 | } | |
67 | } | |
7e557a25 SR |
68 | |
69 | sub check_config | |
70 | { | |
71 | if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9]+)[^a-zA-Z0-9]/) { | |
72 | printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n"; | |
73 | } | |
74 | } | |
75 |