2 files changed, 454 insertions, 0 deletions

diff --git a/examples/depmod.pl b/examples/depmod.pl
new file mode 100755
index 000000000..e65f07b68
--- /dev/null
+++ b/examples/depmod.pl
@@ -0,0 +1,227 @@
+#!/usr/bin/perl -w
+# vi: set ts=4:
+# Copyright (c) 2001 David Schleef <ds@schleef.org>
+# Copyright (c) 2001 Erik Andersen <andersen@lineo.com>
+# Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com>
+# This program is free software; you can redistribute it and/or modify it 
+# under the same terms as Perl itself.
+
+# TODO -- use strict mode...
+#use strict;
+
+use Getopt::Long;
+use File::Find;
+
+
+# Set up some default values
+
+my $basedir="";
+my $kernel;
+my $kernelsyms;
+my $stdout=1;
+my $verbose=0;
+
+
+# get command-line options
+
+my %opt;
+
+GetOptions(
+        \%opt,
+        "help|h",
+        "basedir|b=s" => \$basedir,
+        "kernel|k=s" => \$kernel,
+        "kernelsyms|F=s" => \$kernelsyms,
+        "stdout|n" => \$stdout,
+        "verbose|v" => \$verbose,
+);
+
+if (defined $opt{help}) {
+        print
+                "$0 [OPTION]... [basedir]\n",
+                "\t-h --help\t\tShow this help screen\n",
+                "\t-b --basedir\t\tModules base directory (defaults to /lib/modules)\n",
+                "\t-k --kernel\t\tKernel binary for the target\n",
+                "\t-F --kernelsyms\t\tKernel symbol file\n",
+                "\t-n --stdout\t\tWrite to stdout instead of modules.dep\n",
+                "\t-v --verbose\t\tPrint out lots of debugging stuff\n",
+        ;
+        exit 1;
+}
+
+if($basedir !~ m-/lib/modules-) {
+    warn "WARNING: base directory does not match ..../lib/modules\n";
+}
+
+# Find the list of .o files living under $basedir 
+#if ($verbose) { printf "Locating all modules\n"; }
+my($file) = "";
+my(@liblist) = ();
+find sub { 
+        if ( -f $_  && ! -d $_ ) { 
+                $file = $File::Find::name;
+                if ( $file =~ /.o$/ ) {
+                        push(@liblist, $file);
+                        if ($verbose) { printf "$file\n"; }
+                }
+        }
+}, $basedir;
+if ($verbose) { printf "Finished locating modules\n"; }
+
+foreach $obj ( @liblist, $kernel ){
+    # turn the input file name into a target tag name
+    # vmlinux is a special that is only used to resolve symbols
+    if($obj =~ /vmlinux/) {
+        $tgtname = "vmlinux";
+    } else {
+        ($tgtname) = $obj =~ m-(/lib/modules/.*)$-;
+    }
+
+    warn "MODULE = $tgtname\n" if $verbose;
+
+    # get a list of symbols
+        @output=`nm $obj`;
+        $ksymtab=grep m/ __ksymtab/, @output;
+
+    # gather the exported symbols
+        if($ksymtab){
+        # explicitly exported
+        foreach ( @output ) {
+            / __ksymtab_(.*)$/ and do {
+                warn "sym = $1\n" if $verbose;
+                $exp->{$1} = $tgtname;
+            };
+        }
+        } else {
+        # exporting all symbols
+        foreach ( @output) {
+            / [ABCDGRST] (.*)$/ and do {
+                warn "syma = $1\n" if $verbose;
+                $exp->{$1} = $tgtname;
+            };
+        }
+        }
+    # gather the unresolved symbols
+    foreach ( @output ) {
+        !/ __this_module/ && / U (.*)$/ and do {
+            warn "und = $1\n" if $verbose;
+            push @{$dep->{$tgtname}}, $1;
+        };
+    }
+}
+
+
+# reduce dependancies: remove unresolvable and resolved from vmlinux
+# remove duplicates
+foreach $module (keys %$dep) {
+    $mod->{$module} = {};
+    foreach (@{$dep->{$module}}) {
+        if( $exp->{$_} ) { 
+            warn "resolved symbol $_ in file $exp->{$_}\n" if $verbose;
+            next if $exp->{$_} =~ /vmlinux/;
+            $mod->{$module}{$exp->{$_}} = 1;
+        } else {
+            warn "unresolved symbol $_ in file $module\n";
+        }
+    } 
+}
+
+# resolve the dependancies for each module
+foreach $module ( keys %$mod )  {
+    print "$module:\t";
+    @sorted = sort bydep keys %{$mod->{$module}};
+    print join(" \\\n\t",@sorted);
+#    foreach $m (@sorted ) {
+#        print "\t$m\n";
+#    }
+    print "\n\n";
+}
+
+sub bydep
+{
+    foreach my $f ( keys %{$mod->{$b}} ) {
+        if($f eq $a) {
+            return 1;
+        }
+    }
+    return -1;
+}
+
+
+
+__END__
+
+=head1 NAME
+
+depmod.pl - a cross platform script to generate kernel module dependency
+                lists which can then be used by modprobe.
+
+=head1 SYNOPSIS
+
+depmod.pl [OPTION]... [FILE]...
+
+Example:
+
+        depmod.pl -F linux/System.map target/lib/modules
+
+=head1 DESCRIPTION
+
+The purpose of this script is to automagically generate a list of of kernel
+module dependancies.  This script produces dependancy lists that should be
+identical to the depmod program from the modutils package.  Unlike the depmod
+binary, however, depmod.pl is designed to be run on your host system, not
+on your target system.
+
+This script was written by David Schleef <ds@schleef.org> to be used in
+conjunction with the BusyBox modprobe applet.
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-h --help>
+
+This displays the help message.
+
+=item B<-b --basedir>
+
+The base directory uner which the target's modules will be found.  This
+defaults to the /lib/modules directory.
+
+=item B<-k --kernel>
+
+Kernel binary for the target.  You must either supply a kernel binary
+or a kernel symbol file (using the -F option).
+
+=item B<-F --kernelsyms>
+
+Kernel symbol file for the target.  You must supply either a kernel symbol file
+kernel binary for the target (using the -k option).
+
+=item B<-n --stdout>
+
+Write to stdout instead of modules.dep.  This is currently hard coded...
+kernel binary for the target (using the -k option).
+
+=item B<--verbose>
+
+Be verbose (not implemented)
+
+=back
+
+=head1 COPYRIGHT
+
+Copyright (c) 2001 David Schleef <ds@schleef.org>
+Copyright (c) 2001 Erik Andersen <andersen@lineo.com>
+Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com>
+This program is free software; you can redistribute it and/or modify it 
+under the same terms as Perl itself.
+
+=head1 AUTHOR
+
+David Schleef <ds@schleef.org>
+
+=cut
+
+# $Id: depmod.pl,v 1.1 2001/07/30 19:32:03 andersen Exp $
+
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 @@
+#!/usr/bin/perl -w
+# vi: set ts=4:
+# Copyright (c) 2001 David Schleef <ds@schleef.org>
+# Copyright (c) 2001 Erik Andersen <andersen@lineo.com>
+# Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com>
+# This program is free software; you can redistribute it and/or modify it 
+# under the same terms as Perl itself.
+
+# TODO -- use strict mode...
+#use strict;
+
+use Getopt::Long;
+use File::Find;
+
+
+# Set up some default values
+
+my $basedir="";
+my $kernel;
+my $kernelsyms;
+my $stdout=1;
+my $verbose=0;
+
+
+# get command-line options
+
+my %opt;
+
+GetOptions(
+        \%opt,
+        "help|h",
+        "basedir|b=s" => \$basedir,
+        "kernel|k=s" => \$kernel,
+        "kernelsyms|F=s" => \$kernelsyms,
+        "stdout|n" => \$stdout,
+        "verbose|v" => \$verbose,
+);
+
+if (defined $opt{help}) {
+        print
+                "$0 [OPTION]... [basedir]\n",
+                "\t-h --help\t\tShow this help screen\n",
+                "\t-b --basedir\t\tModules base directory (defaults to /lib/modules)\n",
+                "\t-k --kernel\t\tKernel binary for the target\n",
+                "\t-F --kernelsyms\t\tKernel symbol file\n",
+                "\t-n --stdout\t\tWrite to stdout instead of modules.dep\n",
+                "\t-v --verbose\t\tPrint out lots of debugging stuff\n",
+        ;
+        exit 1;
+}
+
+if($basedir !~ m-/lib/modules-) {
+    warn "WARNING: base directory does not match ..../lib/modules\n";
+}
+
+# Find the list of .o files living under $basedir 
+#if ($verbose) { printf "Locating all modules\n"; }
+my($file) = "";
+my(@liblist) = ();
+find sub { 
+        if ( -f $_  && ! -d $_ ) { 
+                $file = $File::Find::name;
+                if ( $file =~ /.o$/ ) {
+                        push(@liblist, $file);
+                        if ($verbose) { printf "$file\n"; }
+                }
+        }
+}, $basedir;
+if ($verbose) { printf "Finished locating modules\n"; }
+
+foreach $obj ( @liblist, $kernel ){
+    # turn the input file name into a target tag name
+    # vmlinux is a special that is only used to resolve symbols
+    if($obj =~ /vmlinux/) {
+        $tgtname = "vmlinux";
+    } else {
+        ($tgtname) = $obj =~ m-(/lib/modules/.*)$-;
+    }
+
+    warn "MODULE = $tgtname\n" if $verbose;
+
+    # get a list of symbols
+        @output=`nm $obj`;
+        $ksymtab=grep m/ __ksymtab/, @output;
+
+    # gather the exported symbols
+        if($ksymtab){
+        # explicitly exported
+        foreach ( @output ) {
+            / __ksymtab_(.*)$/ and do {
+                warn "sym = $1\n" if $verbose;
+                $exp->{$1} = $tgtname;
+            };
+        }
+        } else {
+        # exporting all symbols
+        foreach ( @output) {
+            / [ABCDGRST] (.*)$/ and do {
+                warn "syma = $1\n" if $verbose;
+                $exp->{$1} = $tgtname;
+            };
+        }
+        }
+    # gather the unresolved symbols
+    foreach ( @output ) {
+        !/ __this_module/ && / U (.*)$/ and do {
+            warn "und = $1\n" if $verbose;
+            push @{$dep->{$tgtname}}, $1;
+        };
+    }
+}
+
+
+# reduce dependancies: remove unresolvable and resolved from vmlinux
+# remove duplicates
+foreach $module (keys %$dep) {
+    $mod->{$module} = {};
+    foreach (@{$dep->{$module}}) {
+        if( $exp->{$_} ) { 
+            warn "resolved symbol $_ in file $exp->{$_}\n" if $verbose;
+            next if $exp->{$_} =~ /vmlinux/;
+            $mod->{$module}{$exp->{$_}} = 1;
+        } else {
+            warn "unresolved symbol $_ in file $module\n";
+        }
+    } 
+}
+
+# resolve the dependancies for each module
+foreach $module ( keys %$mod )  {
+    print "$module:\t";
+    @sorted = sort bydep keys %{$mod->{$module}};
+    print join(" \\\n\t",@sorted);
+#    foreach $m (@sorted ) {
+#        print "\t$m\n";
+#    }
+    print "\n\n";
+}
+
+sub bydep
+{
+    foreach my $f ( keys %{$mod->{$b}} ) {
+        if($f eq $a) {
+            return 1;
+        }
+    }
+    return -1;
+}
+
+
+
+__END__
+
+=head1 NAME
+
+depmod.pl - a cross platform script to generate kernel module dependency
+                lists which can then be used by modprobe.
+
+=head1 SYNOPSIS
+
+depmod.pl [OPTION]... [FILE]...
+
+Example:
+
+        depmod.pl -F linux/System.map target/lib/modules
+
+=head1 DESCRIPTION
+
+The purpose of this script is to automagically generate a list of of kernel
+module dependancies.  This script produces dependancy lists that should be
+identical to the depmod program from the modutils package.  Unlike the depmod
+binary, however, depmod.pl is designed to be run on your host system, not
+on your target system.
+
+This script was written by David Schleef <ds@schleef.org> to be used in
+conjunction with the BusyBox modprobe applet.
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-h --help>
+
+This displays the help message.
+
+=item B<-b --basedir>
+
+The base directory uner which the target's modules will be found.  This
+defaults to the /lib/modules directory.
+
+=item B<-k --kernel>
+
+Kernel binary for the target.  You must either supply a kernel binary
+or a kernel symbol file (using the -F option).
+
+=item B<-F --kernelsyms>
+
+Kernel symbol file for the target.  You must supply either a kernel symbol file
+kernel binary for the target (using the -k option).
+
+=item B<-n --stdout>
+
+Write to stdout instead of modules.dep.  This is currently hard coded...
+kernel binary for the target (using the -k option).
+
+=item B<--verbose>
+
+Be verbose (not implemented)
+
+=back
+
+=head1 COPYRIGHT
+
+Copyright (c) 2001 David Schleef <ds@schleef.org>
+Copyright (c) 2001 Erik Andersen <andersen@lineo.com>
+Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com>
+This program is free software; you can redistribute it and/or modify it 
+under the same terms as Perl itself.
+
+=head1 AUTHOR
+
+David Schleef <ds@schleef.org>
+
+=cut
+
+# $Id: depmod.pl,v 1.1 2001/07/30 19:32:03 andersen Exp $
+