r1687: * dh_installmodules: Look for .ko files too. Closes: #248624

[debhelper.git] / dh_installmodules

diff --git a/dh_installmodules b/dh_installmodules
index a80163068a083e4007563f53786583fcd643e2f5..28f947cab755e464c36a4b0af09802cbeb77e653 100755 (executable)
--- a/dh_installmodules
+++ b/dh_installmodules
@@ -1,27 +1,101 @@
 #!/usr/bin/perl -w
-#
-# Register modules with modutils.
 
+=head1 NAME
+
+dh_installmodules - register modules with modutils
+
+
+=cut
+
+use strict;
 use Debian::Debhelper::Dh_Lib;
+use File::Find;
+
+=head1 SYNOPSIS
+
+B<dh_installmodules> [S<I<debhelper options>>] [B<-n>] [B<--name=>I<name>]
+
+=head1 DESCRIPTION
+
+dh_installmodules is a debhelper program that is responsible for
+registering kernel modules with modutils.
+
+Files named debian/package.modules will be installed as
+etc/modutils/package in the package build directory.
+
+Then postinst and postrm commands are automatically generated to register
+the modules when the package is installed. See L<dh_installdeb(1)> for an
+explanation of how this works. Note that this will be done for any
+package this program acts on which has either the above-mentioned file, or
+has .o or .ko files in /lib/modules.
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-n>, B<--noscripts>
+
+Do not modify postinst/postrm scripts.
+
+=item B<--name=>I<name>
+
+Use "name" as the filename the modules file is installed in
+etc/modutils/. When this parameter is used, dh_installmodules looks for and
+installs files named debian/package.name.modules instead of the usual
+debian/package.modules.
+
+=back
+
+=head1 NOTES
+
+Note that this command is not idempotent. "dh_clean -k" should be called
+between invocations of this command. Otherwise, it may cause multiple
+instances of the same text to be added to maintainer scripts.
+
+=cut
+
 init();
 
-foreach $PACKAGE (@{$dh{DOPACKAGES}}) {
-       $TMP=tmpdir($PACKAGE);
-       $file=pkgfile($PACKAGE,"modules");
+# Returns true if there are any .o or .ko files in the passed directory.
+sub find_kernel_modules {
+       my $searchdir=shift;
+       my @results=();
 
-       if (! -e $TMP) {
-               doit("install","-d",$TMP);
+       return unless -d $searchdir;
+       find(sub { push @results, $_ if /\.k?o$/ }, $searchdir);
+       return @results > 0;
+}
+
+foreach my $package (@{$dh{DOPACKAGES}}) {
+       my $tmp=tmpdir($package);
+       my $file=pkgfile($package,"modules");
+
+       if (! -e $tmp) {
+               doit("install","-d",$tmp);
        }
 
        if ($file) {
-               if (! -e "$TMP/etc/modutils") {
-                       doit("install","-d","$TMP/etc/modutils");
-                       doit("install","-m","0644",$file,"$TMP/etc/modutils/$PACKAGE");
-               }
-               
-               if (! $dh{NOSCRIPTS}) {
-                       autoscript($PACKAGE,"postinst","postinst-modules","s/#PACKAGE#/$PACKAGE/");
-                       autoscript($PACKAGE,"postrm","postrm-modules","s/#PACKAGE#/$PACKAGE/");
+               if (! -e "$tmp/etc/modutils") {
+                       doit("install","-d","$tmp/etc/modutils");
                }
+               doit("install","-m","0644",$file,"$tmp/etc/modutils/".pkgfilename($package));
+       }
+
+       if (! $dh{NOSCRIPTS} &&
+           ($file || find_kernel_modules("$tmp/lib/modules"))) {
+                       autoscript($package,"postinst","postinst-modules","s/#PACKAGE#/$package/");
+                       autoscript($package,"postrm","postrm-modules","s/#PACKAGE#/$package/");
        }
 }
+
+=head1 SEE ALSO
+
+L<debhelper(7)>
+
+This program is a part of debhelper.
+
+=head1 AUTHOR
+
+Joey Hess <joeyh@debian.org>
+
+=cut