summaryrefslogtreecommitdiff
path: root/dh_installmodules
blob: 9b3fc2038feac733c6de8f73dcd2fdc404fa8daa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
#!/usr/bin/perl -w

=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

B<dh_installmodules> is a debhelper program that is responsible for
registering kernel modules.

Kernel modules are searched for in the package build directory and if
found, F<preinst>, F<postinst> and F<postrm> commands are automatically generated to
run B<depmod> and register the modules when the package is installed. 
These commands are inserted into the maintainer scripts by
L<dh_installdeb(1)>.

=head1 FILES

=over 4

=item debian/I<package>.modprobe

Installed to etc/modprobe.d/I<package>.conf in the package build directory.

=item debian/I<package>.modules

These files were installed for use by modutils, but are now not used
and B<dh_installmodules> will warn if these files are present.

=back

=head1 OPTIONS

=over 4

=item B<-n>, B<--noscripts>

Do not modify F<preinst>/F<postinst>/F<postrm> scripts.

=item B<--name=>I<name>

When this parameter is used, B<dh_installmodules> looks for and
installs files named debian/I<package>.I<name>.modprobe instead
of the usual debian/I<package>.modprobe

=back

=head1 NOTES

Note that this command is not idempotent. L<dh_prep(1)> 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();

# Looks for kernel modules in the passed directory. If any are found,
# returns the kernel version (or versions) that the modules seem to be for.
sub find_kernel_modules {
	my $searchdir=shift;
	my %versions;

	return unless -d $searchdir;
	find(sub {
		if (/\.k?o$/) {
			my ($kvers)=$File::Find::dir=~m!lib/modules/([^/]+)/!;
			if (! defined $kvers || ! length $kvers) {
				warning("Cannot determine kernel version for module $File::Find::name");
			}
			else {
				$versions{$kvers}=1;
			}
		}
	}, $searchdir);

	return keys %versions;
}

foreach my $package (@{$dh{DOPACKAGES}}) {
	my $tmp=tmpdir($package);
	my $modutils_file=pkgfile($package,"modules");
	my $modprobe_file=pkgfile($package,"modprobe");

	if (! -e $tmp) {
		doit("install","-d",$tmp);
	}

	if ($modutils_file) {
		warning("ignoring $modutils_file, since modutils is no longer in Debian");
	}

	if ($modprobe_file) {
		if (! -e "$tmp/etc/modprobe.d") {
			doit("install","-d","$tmp/etc/modprobe.d");
		}
		my $old="/etc/modprobe.d/".pkgfilename($package);
		my $new=$old.".conf";
		doit("install","-m","0644",$modprobe_file,"$tmp/$new");
		autoscript($package,"preinst","preinst-moveconffile","s!#OLD#!$old!g;s!#PACKAGE#!$package!g");
		autoscript($package,"postinst","postinst-moveconffile","s!#OLD#!$old!g;s!#NEW#!$new!g");
	}
	
	if (! $dh{NOSCRIPTS}) {
		foreach my $kvers (find_kernel_modules("$tmp/lib/modules")) {
			autoscript($package,"postinst","postinst-modules","s/#KVERS#/$kvers/g");
			autoscript($package,"postrm","postrm-modules","s/#KVERS#/$kvers/g");
		}
	}
}

=head1 SEE ALSO

L<debhelper(7)>

This program is a part of debhelper.

=head1 AUTHOR

Joey Hess <joeyh@debian.org>

=cut