64 lines
2.1 KiB
Perl
Executable File
64 lines
2.1 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# Retrieve modules required for an initrd image
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# $Id$
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unless ( @ARGV ) {
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die "Syntax: $0 [ -d target_directory ] module_1 module_2 module_3\n"
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}
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# Parse command line arguments
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my @requested_modules = ();
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my $target_dir = "";
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my $kernel_ver;
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my $quiet;
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chomp ( my $current_kernel_ver = `uname -r` );
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while ( $_ = shift ) {
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if ( /-d/ ) { $target_dir = shift }
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elsif ( /-k/ ) { $kernel_ver = shift }
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elsif ( /-q/ ) { $quiet = 1 }
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else { push @requested_modules, $_ };
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}
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# Create target directory if required
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if ( $target_dir ) {
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print STDERR "Target directory is $target_dir\n" unless $quiet;
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system ( "mkdir -p $target_dir" );
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chdir $target_dir;
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}
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# Use modprobe -nav to retrieve locations of modules and their dependencies
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print STDERR "Requested modules ". join (' ', @requested_modules)."\n" unless $quiet;
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my @modules_dups;
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foreach my $module ( @requested_modules ) {
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my @module_list = map { /^\S+\s+(.*)$/ ; $1 } `/sbin/modprobe -nva $module`;
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die "Cannot find any modules matching $module\n" unless @module_list;
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push @modules_dups, @module_list;
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}
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# Remove duplicates from list
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my %module_basenames = ();
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my @modules = ();
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foreach my $module ( @modules_dups ) {
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# Ugly hack : assume that dependencies are independent of kernel version
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# This seems to be necessary because we can't run modprobe and specify
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# an alternate modules.dep file; it refuses to understand lines of the
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# form "depfile=XXX" as documented in modules.conf(5)
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$module =~ s/$current_kernel_ver/$kernel_ver/ if $kernel_ver;
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push @modules, $module unless $module_basenames{$module};
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( my $basename ) = ( $module =~ /([^\/]+)\.o/ );
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$module_basenames{$module} = $basename;
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}
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# Process module list
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print "#!/bin/sh\n";
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foreach my $module ( @modules ) {
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my $basename = $module_basenames{$module};
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# Report via stdout
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print STDERR "Using module $basename from $module\n" unless $quiet;
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# Copy uncompressed module to current directory
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system ("gunzip -c $module > $basename.o");
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# Print insmod line to stdout
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print "insmod $basename\n";
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}
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