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Revision 1.1 - (show annotations) (download)
Wed May 4 10:53:35 2011 UTC (3 years, 6 months ago) by mgorny
Branch: MAIN
Introducing systemd.eclass - a helper eclass to handle systemd unit installation.

1 # Copyright 1999-2011 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: $
4
5 # @ECLASS: systemd.eclass
6 # @MAINTAINER:
7 # mgorny@gentoo.org
8 # @BLURB: helper functions to install systemd units
9 # @DESCRIPTION:
10 # This eclass provides a set of functions to install unit files for
11 # sys-apps/systemd within ebuilds.
12 # @EXAMPLE:
13 #
14 # @CODE
15 # inherit autotools-utils systemd
16 #
17 # src_configure() {
18 # local myeconfargs=(
19 # --enable-foo
20 # --disable-bar
21 # )
22 #
23 # systemd_to_myeconfargs
24 # autotools-utils_src_configure
25 # }
26 # @CODE
27
28 inherit multilib
29
30 case ${EAPI:-0} in
31 0|1|2|3|4) ;;
32 *) die "${ECLASS}.eclass API in EAPI ${EAPI} not yet established."
33 esac
34
35 # @FUNCTION: systemd_get_unitdir
36 # @DESCRIPTION:
37 # Output the path for the systemd unit directory (not including ${D}).
38 # This function always succeeds, even if systemd is not installed.
39 systemd_get_unitdir() {
40 debug-print-function ${FUNCNAME} "${@}"
41
42 echo -n /lib/systemd/system
43 }
44
45 # @FUNCTION: systemd_dounit
46 # @USAGE: unit1 [...]
47 # @DESCRIPTION:
48 # Install systemd unit(s). Uses doins, thus it is fatal in EAPI 4
49 # and non-fatal in earlier EAPIs.
50 systemd_dounit() {
51 debug-print-function ${FUNCNAME} "${@}"
52
53 (
54 insinto "$(systemd_get_unitdir)"
55 doins "${@}"
56 )
57 }
58
59 # @FUNCTION: systemd_enable_service
60 # @USAGE: target service
61 # @DESCRIPTION:
62 # Enable service in desired target, e.g. install a symlink for it.
63 # Uses dosym, thus it is fatal in EAPI 4 and non-fatal in earlier
64 # EAPIs.
65 systemd_enable_service() {
66 debug-print-function ${FUNCNAME} "${@}"
67
68 [[ ${#} -eq 2 ]] || die "Synopsis: systemd_enable_service target service"
69
70 local target=${1}
71 local service=${2}
72 local ud=$(systemd_get_unitdir)
73
74 dodir "${ud}"/"${target}".wants && \
75 dosym ../"${service}" "${ud}"/"${target}".wants
76 }
77
78 # @FUNCTION: systemd_with_unitdir
79 # @DESCRIPTION:
80 # Output '--with-systemdsystemunitdir' as expected by systemd-aware configure
81 # scripts. This function always succeeds. Its output may be quoted in order
82 # to preserve whitespace in paths. systemd_to_myeconfargs() is preferred over
83 # this function.
84 systemd_with_unitdir() {
85 debug-print-function ${FUNCNAME} "${@}"
86
87 echo -n --with-systemdsystemunitdir="$(systemd_get_unitdir)"
88 }
89
90 # @FUNCTION: systemd_to_myeconfargs
91 # @DESCRIPTION:
92 # Add '--with-systemdsystemunitdir' as expected by systemd-aware configure
93 # scripts to the myeconfargs variable used by autotools-utils eclass. Handles
94 # quoting automatically.
95 systemd_to_myeconfargs() {
96 debug-print-function ${FUNCNAME} "${@}"
97
98 myeconfargs=(
99 "${myeconfargs[@]}"
100 --with-systemdsystemunitdir="$(systemd_get_unitdir)"
101 )
102 }

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