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Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/depmod.pl | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/scripts/depmod.pl b/scripts/depmod.pl new file mode 100755 index 000000000..e65f07b68 --- /dev/null +++ b/scripts/depmod.pl | |||
| @@ -0,0 +1,227 @@ | |||
| 1 | #!/usr/bin/perl -w | ||
| 2 | # vi: set ts=4: | ||
| 3 | # Copyright (c) 2001 David Schleef <ds@schleef.org> | ||
| 4 | # Copyright (c) 2001 Erik Andersen <andersen@lineo.com> | ||
| 5 | # Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com> | ||
| 6 | # This program is free software; you can redistribute it and/or modify it | ||
| 7 | # under the same terms as Perl itself. | ||
| 8 | |||
| 9 | # TODO -- use strict mode... | ||
| 10 | #use strict; | ||
| 11 | |||
| 12 | use Getopt::Long; | ||
| 13 | use File::Find; | ||
| 14 | |||
| 15 | |||
| 16 | # Set up some default values | ||
| 17 | |||
| 18 | my $basedir=""; | ||
| 19 | my $kernel; | ||
| 20 | my $kernelsyms; | ||
| 21 | my $stdout=1; | ||
| 22 | my $verbose=0; | ||
| 23 | |||
| 24 | |||
| 25 | # get command-line options | ||
| 26 | |||
| 27 | my %opt; | ||
| 28 | |||
| 29 | GetOptions( | ||
| 30 | \%opt, | ||
| 31 | "help|h", | ||
| 32 | "basedir|b=s" => \$basedir, | ||
| 33 | "kernel|k=s" => \$kernel, | ||
| 34 | "kernelsyms|F=s" => \$kernelsyms, | ||
| 35 | "stdout|n" => \$stdout, | ||
| 36 | "verbose|v" => \$verbose, | ||
| 37 | ); | ||
| 38 | |||
| 39 | if (defined $opt{help}) { | ||
| 40 | |||
| 41 | "$0 [OPTION]... [basedir]\n", | ||
| 42 | "\t-h --help\t\tShow this help screen\n", | ||
| 43 | "\t-b --basedir\t\tModules base directory (defaults to /lib/modules)\n", | ||
| 44 | "\t-k --kernel\t\tKernel binary for the target\n", | ||
| 45 | "\t-F --kernelsyms\t\tKernel symbol file\n", | ||
| 46 | "\t-n --stdout\t\tWrite to stdout instead of modules.dep\n", | ||
| 47 | "\t-v --verbose\t\tPrint out lots of debugging stuff\n", | ||
| 48 | ; | ||
| 49 | exit 1; | ||
| 50 | } | ||
| 51 | |||
| 52 | if($basedir !~ m-/lib/modules-) { | ||
| 53 | warn "WARNING: base directory does not match ..../lib/modules\n"; | ||
| 54 | } | ||
| 55 | |||
| 56 | # Find the list of .o files living under $basedir | ||
| 57 | #if ($verbose) { printf "Locating all modules\n"; } | ||
| 58 | my($file) = ""; | ||
| 59 | my(@liblist) = (); | ||
| 60 | find sub { | ||
| 61 | if ( -f $_ && ! -d $_ ) { | ||
| 62 | $file = $File::Find::name; | ||
| 63 | if ( $file =~ /.o$/ ) { | ||
| 64 | push(@liblist, $file); | ||
| 65 | if ($verbose) { printf "$file\n"; } | ||
| 66 | } | ||
| 67 | } | ||
| 68 | }, $basedir; | ||
| 69 | if ($verbose) { printf "Finished locating modules\n"; } | ||
| 70 | |||
| 71 | foreach $obj ( @liblist, $kernel ){ | ||
| 72 | # turn the input file name into a target tag name | ||
| 73 | # vmlinux is a special that is only used to resolve symbols | ||
| 74 | if($obj =~ /vmlinux/) { | ||
| 75 | $tgtname = "vmlinux"; | ||
| 76 | } else { | ||
| 77 | ($tgtname) = $obj =~ m-(/lib/modules/.*)$-; | ||
| 78 | } | ||
| 79 | |||
| 80 | warn "MODULE = $tgtname\n" if $verbose; | ||
| 81 | |||
| 82 | # get a list of symbols | ||
| 83 | @output=`nm $obj`; | ||
| 84 | $ksymtab=grep m/ __ksymtab/, @output; | ||
| 85 | |||
| 86 | # gather the exported symbols | ||
| 87 | if($ksymtab){ | ||
| 88 | # explicitly exported | ||
| 89 | foreach ( @output ) { | ||
| 90 | / __ksymtab_(.*)$/ and do { | ||
| 91 | warn "sym = $1\n" if $verbose; | ||
| 92 | $exp->{$1} = $tgtname; | ||
| 93 | }; | ||
| 94 | } | ||
| 95 | } else { | ||
| 96 | # exporting all symbols | ||
| 97 | foreach ( @output) { | ||
| 98 | / [ABCDGRST] (.*)$/ and do { | ||
| 99 | warn "syma = $1\n" if $verbose; | ||
| 100 | $exp->{$1} = $tgtname; | ||
| 101 | }; | ||
| 102 | } | ||
| 103 | } | ||
| 104 | # gather the unresolved symbols | ||
| 105 | foreach ( @output ) { | ||
| 106 | !/ __this_module/ && / U (.*)$/ and do { | ||
| 107 | warn "und = $1\n" if $verbose; | ||
| 108 | push @{$dep->{$tgtname}}, $1; | ||
| 109 | }; | ||
| 110 | } | ||
| 111 | } | ||
| 112 | |||
| 113 | |||
| 114 | # reduce dependancies: remove unresolvable and resolved from vmlinux | ||
| 115 | # remove duplicates | ||
| 116 | foreach $module (keys %$dep) { | ||
| 117 | $mod->{$module} = {}; | ||
| 118 | foreach (@{$dep->{$module}}) { | ||
| 119 | if( $exp->{$_} ) { | ||
| 120 | warn "resolved symbol $_ in file $exp->{$_}\n" if $verbose; | ||
| 121 | next if $exp->{$_} =~ /vmlinux/; | ||
| 122 | $mod->{$module}{$exp->{$_}} = 1; | ||
| 123 | } else { | ||
| 124 | warn "unresolved symbol $_ in file $module\n"; | ||
| 125 | } | ||
| 126 | } | ||
| 127 | } | ||
| 128 | |||
| 129 | # resolve the dependancies for each module | ||
| 130 | foreach $module ( keys %$mod ) { | ||
| 131 | print "$module:\t"; | ||
| 132 | @sorted = sort bydep keys %{$mod->{$module}}; | ||
| 133 | print join(" \\\n\t",@sorted); | ||
| 134 | # foreach $m (@sorted ) { | ||
| 135 | # print "\t$m\n"; | ||
| 136 | # } | ||
| 137 | print "\n\n"; | ||
| 138 | } | ||
| 139 | |||
| 140 | sub bydep | ||
| 141 | { | ||
| 142 | foreach my $f ( keys %{$mod->{$b}} ) { | ||
| 143 | if($f eq $a) { | ||
| 144 | return 1; | ||
| 145 | } | ||
| 146 | } | ||
| 147 | return -1; | ||
| 148 | } | ||
| 149 | |||
| 150 | |||
| 151 | |||
| 152 | __END__ | ||
| 153 | |||
| 154 | =head1 NAME | ||
| 155 | |||
| 156 | depmod.pl - a cross platform script to generate kernel module dependency | ||
| 157 | lists which can then be used by modprobe. | ||
| 158 | |||
| 159 | =head1 SYNOPSIS | ||
| 160 | |||
| 161 | depmod.pl [OPTION]... [FILE]... | ||
| 162 | |||
| 163 | Example: | ||
| 164 | |||
| 165 | depmod.pl -F linux/System.map target/lib/modules | ||
| 166 | |||
| 167 | =head1 DESCRIPTION | ||
| 168 | |||
| 169 | The purpose of this script is to automagically generate a list of of kernel | ||
| 170 | module dependancies. This script produces dependancy lists that should be | ||
| 171 | identical to the depmod program from the modutils package. Unlike the depmod | ||
| 172 | binary, however, depmod.pl is designed to be run on your host system, not | ||
| 173 | on your target system. | ||
| 174 | |||
| 175 | This script was written by David Schleef <ds@schleef.org> to be used in | ||
| 176 | conjunction with the BusyBox modprobe applet. | ||
| 177 | |||
| 178 | =head1 OPTIONS | ||
| 179 | |||
| 180 | =over 4 | ||
| 181 | |||
| 182 | =item B<-h --help> | ||
| 183 | |||
| 184 | This displays the help message. | ||
| 185 | |||
| 186 | =item B<-b --basedir> | ||
| 187 | |||
| 188 | The base directory uner which the target's modules will be found. This | ||
| 189 | defaults to the /lib/modules directory. | ||
| 190 | |||
| 191 | =item B<-k --kernel> | ||
| 192 | |||
| 193 | Kernel binary for the target. You must either supply a kernel binary | ||
| 194 | or a kernel symbol file (using the -F option). | ||
| 195 | |||
| 196 | =item B<-F --kernelsyms> | ||
| 197 | |||
| 198 | Kernel symbol file for the target. You must supply either a kernel symbol file | ||
| 199 | kernel binary for the target (using the -k option). | ||
| 200 | |||
| 201 | =item B<-n --stdout> | ||
| 202 | |||
| 203 | Write to stdout instead of modules.dep. This is currently hard coded... | ||
| 204 | kernel binary for the target (using the -k option). | ||
| 205 | |||
| 206 | =item B<--verbose> | ||
| 207 | |||
| 208 | Be verbose (not implemented) | ||
| 209 | |||
| 210 | =back | ||
| 211 | |||
| 212 | =head1 COPYRIGHT | ||
| 213 | |||
| 214 | Copyright (c) 2001 David Schleef <ds@schleef.org> | ||
| 215 | Copyright (c) 2001 Erik Andersen <andersen@lineo.com> | ||
| 216 | Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com> | ||
| 217 | This program is free software; you can redistribute it and/or modify it | ||
| 218 | under the same terms as Perl itself. | ||
| 219 | |||
| 220 | =head1 AUTHOR | ||
| 221 | |||
| 222 | David Schleef <ds@schleef.org> | ||
| 223 | |||
| 224 | =cut | ||
| 225 | |||
| 226 | # $Id: depmod.pl,v 1.1 2001/07/30 19:32:03 andersen Exp $ | ||
| 227 | |||
