summaryrefslogtreecommitdiff
path: root/dh_installinit
blob: d0f351c7e818fdf7ff1f79d686bdda51dbcf19f1 (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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
#!/usr/bin/perl

=head1 NAME

dh_installinit - install service init files into package build directories

=cut

use strict;
use warnings;
use Debian::Debhelper::Dh_Lib;
use File::Find;

=head1 SYNOPSIS

B<dh_installinit> [S<I<debhelper options>>] [B<--name=>I<name>] [B<-n>] [B<-R>] [B<-r>] [B<-d>] [S<B<--> I<params>>]

=head1 DESCRIPTION

B<dh_installinit> is a debhelper program that is responsible for installing
init scripts with associated defaults files, as well as upstart job files,
and systemd service files into package build directories.

It also automatically generates the F<postinst> and F<postrm> and F<prerm>
commands needed to set up the symlinks in F</etc/rc*.d/> to start and stop
the init scripts.

=head1 FILES

=over 4

=item debian/I<package>.init

If this exists, it is installed into etc/init.d/I<package> in the package
build directory.

=item debian/I<package>.default

If this exists, it is installed into etc/default/I<package> in the package
build directory.

=item debian/I<package>.upstart

If this exists, it is installed into etc/init/I<package>.conf in the package
build directory.

=item debian/I<package>.service

If this exists, it is installed into lib/systemd/system/I<package>.service in
the package build directory.

=item debian/I<package>.tmpfile

If this exists, it is installed into usr/lib/tmpfiles.d/I<package>.conf in the
package build directory. (The tmpfiles.d mechanism is currently only used
by systemd.)

=back

=head1 OPTIONS

=over 4

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

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

=item B<-o>, B<--onlyscripts>

Only modify F<postinst>/F<postrm>/F<prerm> scripts, do not actually install
any init script, default files, upstart job or systemd service file. May be
useful if the file is shipped and/or installed by upstream in a way that
doesn't make it easy to let B<dh_installinit> find it.

B<Caveat>: This will bypass all the regular checks and
I<unconditionally> modify the scripts.  You will almost certainly want
to use this with B<-p> to limit, which packages are affected by the
call.  Example:

 override_dh_installinit:
	dh_installinit -pfoo --onlyscripts
	dh_installinit --remaining

=item B<-R>, B<--restart-after-upgrade>

Do not stop the init script until after the package upgrade has been
completed. This is different than the default behavior, which stops the
script in the F<prerm>, and starts it again in the F<postinst>.

This can be useful for daemons that should not have a possibly long
downtime during upgrade. But you should make sure that the daemon will not
get confused by the package being upgraded while it's running before using
this option.

=item B<-r>, B<--no-restart-on-upgrade>

Do not stop init script on upgrade.

=item B<--no-start>

Do not start the init script on install or upgrade, or stop it on removal.
Only call B<update-rc.d>. Useful for rcS scripts.

=item B<-d>, B<--remove-d>

Remove trailing B<d> from the name of the package, and use the result for the
filename the upstart job file is installed as in F<etc/init/> , and for the
filename the init script is installed as in etc/init.d and the default file
is installed as in F<etc/default/>. This may be useful for daemons with names
ending in B<d>. (Note: this takes precedence over the B<--init-script> parameter
described below.)

=item B<-u>I<params> B<--update-rcd-params=>I<params>

=item B<--> I<params>

Pass I<params> to L<update-rc.d(8)>. If not specified, B<defaults> will be
passed to L<update-rc.d(8)>.

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

Install the init script (and default file) as well as upstart job file
using the filename I<name> instead of the default filename, which is
the package name. When this parameter is used, B<dh_installinit> looks
for and installs files named F<debian/package.name.init>,
F<debian/package.name.default> and F<debian/package.name.upstart>
instead of the usual F<debian/package.init>, F<debian/package.default> and
F<debian/package.upstart>.

=item B<--init-script=>I<scriptname>

Use I<scriptname> as the filename the init script is installed as in
F<etc/init.d/> (and also use it as the filename for the defaults file, if it
is installed). If you use this parameter, B<dh_installinit> will look to see
if a file in the F<debian/> directory exists that looks like
F<package.scriptname> and if so will install it as the init script in
preference to the files it normally installs.

This parameter is deprecated, use the B<--name> parameter instead. This
parameter is incompatible with the use of upstart jobs.

=item B<--error-handler=>I<function>

Call the named shell I<function> if running the init script fails. The
function should be provided in the F<prerm> and F<postinst> scripts, before the
B<#DEBHELPER#> token.

=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(options => {
	"r" => \$dh{R_FLAG},
	"no-restart-on-upgrade" => \$dh{R_FLAG},
	"no-start" => \$dh{NO_START},
	"R|restart-after-upgrade" => \$dh{RESTART_AFTER_UPGRADE},
	"init-script=s" => \$dh{INIT_SCRIPT},
	"update-rcd-params=s", => \$dh{U_PARAMS},
	"remove-d" => \$dh{D_FLAG},
});

# PROMISE: DH NOOP WITHOUT service tmpfile default upstart init init.d

foreach my $package (@{$dh{DOPACKAGES}}) {
	my $tmp=tmpdir($package);

	# Figure out what filename to install it as.
	my $script;
	my $scriptsrc;
	my $jobfile=$package;
	if (defined $dh{NAME}) {
		$jobfile=$script=$scriptsrc=$dh{NAME};
	}
	elsif ($dh{D_FLAG}) {
		# -d on the command line sets D_FLAG. We will 
		# remove a trailing 'd' from the package name and 
		# use that as the name.
		$script=$package;
		if ($script=~m/(.*)d$/) {
			$jobfile=$script=$1;
		}
		else {
			warning("\"$package\" has no final d' in its name, but -d was specified.");
		}
		$scriptsrc=$script;
	}       
	elsif ($dh{INIT_SCRIPT}) {
		$script=$dh{INIT_SCRIPT};
		$scriptsrc=$script;
	}
	else {
		$script=$package;
		if (compat(9)) {
			$scriptsrc=$script;
		}
		else {
			$scriptsrc="init";
		}
	}       

	my $service=pkgfile($package,"service");
	if ($service ne '' && ! $dh{ONLYSCRIPTS}) {
		my $path="$tmp/lib/systemd/system";
		if (! -d $path) {
			install_dir($path);
		}

		install_file($service, "$path/$script.service");
	}

	my $tmpfile=pkgfile($package,"tmpfile");
	if ($tmpfile ne '' && ! $dh{ONLYSCRIPTS}) {
		my $path="$tmp/usr/lib/tmpfiles.d";
		if (! -d $path) {
			install_dir($path);
		}

		install_file($tmpfile, "$path/$script.conf");
	}

	my $job=pkgfile($package,"upstart");
	if ($job ne '' && ! $dh{ONLYSCRIPTS}) {
		if (! -d "$tmp/etc/init") {
			install_dir("$tmp/etc/init");
		}
		
		install_file($job, "$tmp/etc/init/$jobfile.conf");
	}

	my $default=pkgfile($package,'default');
	if ($default ne '' && ! $dh{ONLYSCRIPTS}) {
		if (! -d "$tmp/etc/default") {
			install_dir("$tmp/etc/default");
		}
		install_file($default, "$tmp/etc/default/$script");
	}

	my $init=pkgfile($package,$scriptsrc) || pkgfile($package,"init") ||
		pkgfile($package,"init.d");

	if ($init ne '' && ! $dh{ONLYSCRIPTS}) {
		if (! -d "$tmp/etc/init.d") {
			install_dir("$tmp/etc/init.d");
		}
		
		install_prog($init,"$tmp/etc/init.d/$script");
	}

	if ($dh{INIT_SCRIPT} && $job ne '' && $init ne '') {
		error("Can't use --init-script with an upstart job");
	}

	if (!$dh{NOSCRIPTS}) {
		# Include postinst-init-tmpfiles if the package ships any files
		# in /usr/lib/tmpfiles.d or /etc/tmpfiles.d
		my @tmpfiles;
		find({
			wanted => sub {
				my $name = $File::Find::name;
				return unless -f $name;
				$name =~ s/^\Q$tmp\E//g;
				if ($name =~ m,^/usr/lib/tmpfiles\.d/, ||
					$name =~ m,^/etc/tmpfiles\.d/,) {
					push @tmpfiles, $name;
				}
			},
			no_chdir => 1,
		}, $tmp);
		if (@tmpfiles > 0) {
			autoscript($package,"postinst", "postinst-init-tmpfiles",
				"s,#TMPFILES#," . join(" ", sort @tmpfiles).",");
		}
	}

	if ($service ne '' || $job ne '' || $init ne '' || $dh{ONLYSCRIPTS}) {
		# This is set by the -u "foo" command line switch, it's
		# the parameters to pass to update-rc.d. If not set,
		# we have to say "defaults".
		my $params='';
		if (defined($dh{U_PARAMS})) {
			$params=join(' ',@{$dh{U_PARAMS}});
		}	
		if ($params eq '') {
			$params="defaults";
		}
		
		if (! $dh{NOSCRIPTS}) {
			if (! $dh{NO_START}) {
				if ($dh{RESTART_AFTER_UPGRADE}) {
					# update-rc.d, and restart (or
					# start if new install) script
					autoscript($package,"postinst", "postinst-init-restart",
						"s/#SCRIPT#/$script/g;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
				}
				else {
					# update-rc.d, and start script
					autoscript($package,"postinst", "postinst-init",
						"s/#SCRIPT#/$script/g;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
				}
			
				if ($dh{R_FLAG} || $dh{RESTART_AFTER_UPGRADE}) {
					# stops script only on remove
					autoscript($package,"prerm","prerm-init-norestart",
						"s/#SCRIPT#/$script/g;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
				}
				else {
					# always stops script
					autoscript($package,"prerm","prerm-init",
						"s/#SCRIPT#/$script/g;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
				}
			}
			else {
				# just update-rc.d
				autoscript($package,"postinst", "postinst-init-nostart",
					"s/#SCRIPT#/$script/g;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
			}

			# removes rc.d links
			autoscript($package,"postrm","postrm-init",
				"s/#SCRIPT#/$script/g;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
		}
	}
}

=head1 SEE ALSO

L<debhelper(7)>

This program is a part of debhelper.

=head1 AUTHORS

Joey Hess <joeyh@debian.org>

Steve Langasek <steve.langasek@canonical.com>

Michael Stapelberg <stapelberg@debian.org>

=cut

# Local Variables:
# indent-tabs-mode: t
# tab-width: 4
# cperl-indent-level: 4
# End: