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r1691: * dh_installinit: Added --error-handler option. Based on work by Thom May.
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1 #!/usr/bin/perl -w
2
3 =head1 NAME
4
5 dh_installinit - install init scripts into package build directories
6
7 =cut
8
9 use strict;
10 use Debian::Debhelper::Dh_Lib;
11
12 =head1 SYNOPSIS
13
14 B<dh_installinit> [S<I<debhelper options>>] [B<--name=>I<name>] [B<-n>] [B<-r>] [B<-d>] [S<B<--> I<params>>]
15
16 =head1 DESCRIPTION
17
18 dh_installinit is a debhelper program that is responsible for installing
19 init scripts and associated defaults files into package build directories.
20
21 It also automatically generates the postinst and postrm and prerm commands
22 needed to set up the symlinks in /etc/rc*.d/ and to start and stop the init
23 scripts.
24
25 If a file named debian/package.init exists, then it is installed into
26 etc/init.d/package in the package build directory, with "package" replaced
27 by the package name.
28
29 If a file named debian/package.default exists, then it is installed into
30 etc/default/package in the package build directory, with "package" replaced
31 by the package name.
32
33 =head1 OPTIONS
34
35 =over 4
36
37 =item B<-n>, B<--noscripts>
38
39 Do not modify postinst/postrm/prerm scripts.
40
41 =item B<-r>, B<--no-restart-on-upgrade>
42
43 Do not restart init script on upgrade.
44
45 =item B<--no-start>
46
47 Do not start the init script on install or upgrade, or stop it on removal.
48 Only call update-rc.d. Useful for rcS scripts.
49
50 =item B<-d>, B<--remove-d>
51
52 Remove trailing "d" from the name of the package, and use the result for the
53 filename the init script is installed as in etc/init.d/ , and the default file
54 is installed as in etc/default/ . This may be useful for daemons with names
55 ending in "d". (Note: this takes precedence over the --init-script parameter
56 described below.)
57
58 =item B<-u>I<params> B<--update-rcd-params=>I<params>
59
60 =item B<--> I<params>
61
62 Pass "params" to L<update-rc.d(8)>. If not specified, "defaults" will be
63 passed to L<update-rc.d(8)>.
64
65 =item B<--name=>I<name>
66
67 Install the init script (and default file) using the filename I<name>
68 instead of the default filename, which is the package name. When this
69 parameter is used, dh_installinit looks for and installs files named
70 debian/package.name.init and debian/package.name.default, instead of the
71 usual debian/package.init and debian/package.default.
72
73 =item B<--init-script=>I<scriptname>
74
75 Use "scriptname" as the filename the init script is installed as in
76 etc/init.d/ (and also use it as the filename for the defaults file, if it
77 is installed). If you use this parameter, dh_installinit will look to see
78 if a file in the debian/ directory exists that looks like
79 "package.scriptname" and if so will install it as the init script in
80 preference to the files it normally installs.
81
82 This parameter is deprecated, use the --name parameter instead.
83
84 =item B<--error-handler=>I<function>
85
86 Call the named shell function if running the init script fails. The
87 function should be provided in the prerm and postinst scripts, before the
88 #DEBHELPER# token.
89
90 =back
91
92 =head1 NOTES
93
94 Note that this command is not idempotent. "dh_clean -k" should be called
95 between invocations of this command. Otherwise, it may cause multiple
96 instances of the same text to be added to maintainer scripts.
97
98 =cut
99
100 init();
101
102 foreach my $package (@{$dh{DOPACKAGES}}) {
103         my $tmp=tmpdir($package);
104
105         # Figure out what filename to install it as.
106         my $script;
107         if (defined $dh{NAME}) {
108                 $script=$dh{NAME};
109         }
110         elsif ($dh{D_FLAG}) {
111                 # -d on the command line sets D_FLAG. We will 
112                 # remove a trailing 'd' from the package name and 
113                 # use that as the name.
114                 $script=$package;
115                 if ($script=~m/(.*)d$/) {
116                         $script=$1;
117                 }
118                 else {
119                         warning("\"$package\" has no final d' in its name, but -d was specified.");
120                 }
121         }       
122         elsif ($dh{INIT_SCRIPT}) {
123                 $script=$dh{INIT_SCRIPT};
124         }
125         else {
126                 $script=$package;
127         }       
128         
129         my $init=pkgfile($package,$script) || pkgfile($package,"init") ||
130               pkgfile($package,"init.d");
131         my $default=pkgfile($package,'default');
132
133         if ($default ne '') {
134                 if (! -d "$tmp/etc/default") {
135                         doit("install","-d","$tmp/etc/default");
136                 }
137                 doit("install","-p","-m644",$default,"$tmp/etc/default/$script");
138         }
139
140         if ($init ne '') {
141                 if (! -d "$tmp/etc/init.d") {
142                         doit("install","-d","$tmp/etc/init.d");
143                 }
144
145                 doit("install","-p","-m755",$init,"$tmp/etc/init.d/$script");
146
147                 # This is set by the -u "foo" command line switch, it's
148                 # the parameters to pass to update-rc.d. If not set,
149                 # we have to say "defaults".
150                 my $params='';
151                 if (defined($dh{U_PARAMS})) {
152                         $params=join(' ',@{$dh{U_PARAMS}});
153                 }       
154                 if ($params eq '') {
155                         $params="defaults";
156                 }
157                 
158                 if (! $dh{NOSCRIPTS}) {
159                         if (! $dh{NO_START}) {
160                                 # update-rc.d, and start script
161                                 autoscript($package,"postinst", "postinst-init",
162                                         "s/#SCRIPT#/$script/;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
163                         
164                                 if ($dh{R_FLAG}) {
165                                         # stops script only on remove
166                                         autoscript($package,"prerm","prerm-init-norestart",
167                                                 "s/#SCRIPT#/$script/;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
168                                 }
169                                 else {
170                                         # always stops script
171                                         autoscript($package,"prerm","prerm-init",
172                                                 "s/#SCRIPT#/$script/;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
173                                 }
174                         }
175                         else {
176                                 # just update-rc.d
177                                 autoscript($package,"postinst", "postinst-init-nostart",
178                                         "s/#SCRIPT#/$script/;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
179                         }
180
181                         # removes rc.d links
182                         autoscript($package,"postrm","postrm-init",
183                                 "s/#SCRIPT#/$script/;s/#INITPARMS#/$params/;s/#ERROR_HANDLER#/$dh{ERROR_HANDLER}/");
184                 }
185         }
186 }
187
188 =head1 SEE ALSO
189
190 L<debhelper(7)>
191
192 This program is a part of debhelper.
193
194 =head1 AUTHOR
195
196 Joey Hess <joeyh@debian.org>
197
198 =cut