summaryrefslogtreecommitdiff
blob: 9a5abfeac90087e8242d9cdfc1eb4ae6c2921db5 (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
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: systemd.eclass
# @MAINTAINER:
# systemd@gentoo.org
# @SUPPORTED_EAPIS: 0 1 2 3 4 5 6 7
# @BLURB: helper functions to install systemd units
# @DESCRIPTION:
# This eclass provides a set of functions to install unit files for
# sys-apps/systemd within ebuilds.
# @EXAMPLE:
#
# @CODE
# inherit systemd
#
# src_configure() {
#	local myconf=(
#		--enable-foo
#		--with-systemdsystemunitdir="$(systemd_get_systemunitdir)"
#	)
#
#	econf "${myconf[@]}"
# }
# @CODE

inherit toolchain-funcs

case ${EAPI:-0} in
	0|1|2|3|4|5|6|7) ;;
	*) die "${ECLASS}.eclass API in EAPI ${EAPI} not yet established."
esac

if [[ ${EAPI:-0} == [0123456] ]]; then
	DEPEND="virtual/pkgconfig"
else
	BDEPEND="virtual/pkgconfig"
fi

# @FUNCTION: _systemd_get_dir
# @USAGE: <variable-name> <fallback-directory>
# @INTERNAL
# @DESCRIPTION:
# Try to obtain the <variable-name> variable from systemd.pc.
# If pkg-config or systemd is not installed, return <fallback-directory>
# instead.
_systemd_get_dir() {
	[[ ${#} -eq 2 ]] || die "Usage: ${FUNCNAME} <variable-name> <fallback-directory>"
	local variable=${1} fallback=${2} d

	if $(tc-getPKG_CONFIG) --exists systemd; then
		d=$($(tc-getPKG_CONFIG) --variable="${variable}" systemd) || die
		d=${d#${EPREFIX}}
	else
		d=${fallback}
	fi

	echo "${d}"
}

# @FUNCTION: _systemd_get_unitdir
# @INTERNAL
# @DESCRIPTION:
# Get unprefixed unitdir.
_systemd_get_systemunitdir() {
	_systemd_get_dir systemdsystemunitdir /lib/systemd/system
}

# @FUNCTION: systemd_get_systemunitdir
# @DESCRIPTION:
# Output the path for the systemd system unit directory (not including
# ${D}).  This function always succeeds, even if systemd is not
# installed.
systemd_get_systemunitdir() {
	has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
	debug-print-function ${FUNCNAME} "${@}"

	echo "${EPREFIX}$(_systemd_get_systemunitdir)"
}

# @FUNCTION: systemd_get_unitdir
# @DESCRIPTION:
# Deprecated alias for systemd_get_systemunitdir.
systemd_get_unitdir() {
	[[ ${EAPI} == [012345] ]] || die "${FUNCNAME} is banned in EAPI 6, use systemd_get_systemunitdir instead"

	systemd_get_systemunitdir
}

# @FUNCTION: _systemd_get_userunitdir
# @INTERNAL
# @DESCRIPTION:
# Get unprefixed userunitdir.
_systemd_get_userunitdir() {
	_systemd_get_dir systemduserunitdir /usr/lib/systemd/user
}

# @FUNCTION: systemd_get_userunitdir
# @DESCRIPTION:
# Output the path for the systemd user unit directory (not including
# ${D}). This function always succeeds, even if systemd is not
# installed.
systemd_get_userunitdir() {
	has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
	debug-print-function ${FUNCNAME} "${@}"

	echo "${EPREFIX}$(_systemd_get_userunitdir)"
}

# @FUNCTION: _systemd_get_utildir
# @INTERNAL
# @DESCRIPTION:
# Get unprefixed utildir.
_systemd_get_utildir() {
	_systemd_get_dir systemdutildir /lib/systemd
}

# @FUNCTION: systemd_get_utildir
# @DESCRIPTION:
# Output the path for the systemd utility directory (not including
# ${D}). This function always succeeds, even if systemd is not
# installed.
systemd_get_utildir() {
	has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
	debug-print-function ${FUNCNAME} "${@}"

	echo "${EPREFIX}$(_systemd_get_utildir)"
}

# @FUNCTION: _systemd_get_systemgeneratordir
# @INTERNAL
# @DESCRIPTION:
# Get unprefixed systemgeneratordir.
_systemd_get_systemgeneratordir() {
	_systemd_get_dir systemdsystemgeneratordir /lib/systemd/system-generators
}

# @FUNCTION: systemd_get_systemgeneratordir
# @DESCRIPTION:
# Output the path for the systemd system generator directory (not including
# ${D}). This function always succeeds, even if systemd is not
# installed.
systemd_get_systemgeneratordir() {
	has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
	debug-print-function ${FUNCNAME} "${@}"

	echo "${EPREFIX}$(_systemd_get_systemgeneratordir)"
}

# @FUNCTION: systemd_dounit
# @USAGE: <unit>...
# @DESCRIPTION:
# Install systemd unit(s). Uses doins, thus it is fatal in EAPI 4
# and non-fatal in earlier EAPIs.
systemd_dounit() {
	debug-print-function ${FUNCNAME} "${@}"

	(
		insopts -m 0644
		insinto "$(_systemd_get_systemunitdir)"
		doins "${@}"
	)
}

# @FUNCTION: systemd_newunit
# @USAGE: <old-name> <new-name>
# @DESCRIPTION:
# Install systemd unit with a new name. Uses newins, thus it is fatal
# in EAPI 4 and non-fatal in earlier EAPIs.
systemd_newunit() {
	debug-print-function ${FUNCNAME} "${@}"

	(
		insopts -m 0644
		insinto "$(_systemd_get_systemunitdir)"
		newins "${@}"
	)
}

# @FUNCTION: systemd_douserunit
# @USAGE: <unit>...
# @DESCRIPTION:
# Install systemd user unit(s). Uses doins, thus it is fatal in EAPI 4
# and non-fatal in earlier EAPIs.
systemd_douserunit() {
	debug-print-function ${FUNCNAME} "${@}"

	(
		insopts -m 0644
		insinto "$(_systemd_get_userunitdir)"
		doins "${@}"
	)
}

# @FUNCTION: systemd_newuserunit
# @USAGE: <old-name> <new-name>
# @DESCRIPTION:
# Install systemd user unit with a new name. Uses newins, thus it
# is fatal in EAPI 4 and non-fatal in earlier EAPIs.
systemd_newuserunit() {
	debug-print-function ${FUNCNAME} "${@}"

	(
		insopts -m 0644
		insinto "$(_systemd_get_userunitdir)"
		newins "${@}"
	)
}

# @FUNCTION: systemd_install_serviced
# @USAGE: <conf-file> [<service>]
# @DESCRIPTION:
# Install <conf-file> as the template <service>.d/00gentoo.conf.
# If <service> is not specified
# <conf-file> with the .conf suffix stripped is used
# (e.g. foo.service.conf -> foo.service.d/00gentoo.conf).
systemd_install_serviced() {
	debug-print-function ${FUNCNAME} "${@}"

	local src=${1}
	local service=${2}

	[[ ${src} ]] || die "No file specified"

	if [[ ! ${service} ]]; then
		[[ ${src} == *.conf ]] || die "Source file needs .conf suffix"
		service=${src##*/}
		service=${service%.conf}
	fi
	# avoid potentially common mistake
	[[ ${service} == *.d ]] && die "Service must not have .d suffix"

	(
		insopts -m 0644
		insinto /etc/systemd/system/"${service}".d
		newins "${src}" 00gentoo.conf
	)
}

# @FUNCTION: systemd_dotmpfilesd
# @USAGE: <tmpfilesd>...
# @DESCRIPTION:
# Install systemd tmpfiles.d files. Uses doins, thus it is fatal
# in EAPI 4 and non-fatal in earlier EAPIs.
systemd_dotmpfilesd() {
	debug-print-function ${FUNCNAME} "${@}"

	for f; do
		[[ ${f} == *.conf ]] \
			|| die 'tmpfiles.d files need to have .conf suffix.'
	done

	(
		insopts -m 0644
		insinto /usr/lib/tmpfiles.d/
		doins "${@}"
	)
}

# @FUNCTION: systemd_newtmpfilesd
# @USAGE: <old-name> <new-name>.conf
# @DESCRIPTION:
# Install systemd tmpfiles.d file under a new name. Uses newins, thus it
# is fatal in EAPI 4 and non-fatal in earlier EAPIs.
systemd_newtmpfilesd() {
	debug-print-function ${FUNCNAME} "${@}"

	[[ ${2} == *.conf ]] \
		|| die 'tmpfiles.d files need to have .conf suffix.'

	(
		insopts -m 0644
		insinto /usr/lib/tmpfiles.d/
		newins "${@}"
	)
}

# @FUNCTION: systemd_enable_service
# @USAGE: <target> <service>
# @DESCRIPTION:
# Enable service in desired target, e.g. install a symlink for it.
# Uses dosym, thus it is fatal in EAPI 4 and non-fatal in earlier
# EAPIs.
systemd_enable_service() {
	debug-print-function ${FUNCNAME} "${@}"

	[[ ${#} -eq 2 ]] || die "Synopsis: systemd_enable_service target service"

	local target=${1}
	local service=${2}
	local ud=$(_systemd_get_systemunitdir)
	local destname=${service##*/}

	dodir "${ud}"/"${target}".wants && \
	dosym ../"${service}" "${ud}"/"${target}".wants/"${destname}"
}

# @FUNCTION: systemd_enable_ntpunit
# @USAGE: <NN-name> <service>...
# @DESCRIPTION:
# Add an NTP service provider to the list of implementations
# in timedated. <NN-name> defines the newly-created ntp-units.d priority
# and name, while the remaining arguments list service units that will
# be added to that file.
#
# Uses doins, thus it is fatal in EAPI 4 and non-fatal in earlier
# EAPIs.
#
# Doc: https://www.freedesktop.org/wiki/Software/systemd/timedated/
systemd_enable_ntpunit() {
	debug-print-function ${FUNCNAME} "${@}"
	if [[ ${#} -lt 2 ]]; then
		die "Usage: systemd_enable_ntpunit <NN-name> <service>..."
	fi

	local ntpunit_name=${1}
	local services=( "${@:2}" )

	if [[ ${ntpunit_name} != [0-9][0-9]-* ]]; then
		die "ntpunit.d file must be named NN-name where NN are digits."
	elif [[ ${ntpunit_name} == *.list ]]; then
		die "The .list suffix is appended implicitly to ntpunit.d name."
	fi

	local unitdir=$(systemd_get_systemunitdir)
	local s
	for s in "${services[@]}"; do
		if [[ ! -f "${D}${unitdir}/${s}" ]]; then
			die "ntp-units.d provider ${s} not installed (yet?) in \${D}."
		fi
		echo "${s}" >> "${T}"/${ntpunit_name}.list || die
	done

	(
		insopts -m 0644
		insinto "$(_systemd_get_utildir)"/ntp-units.d
		doins "${T}"/${ntpunit_name}.list
	)
	local ret=${?}

	rm "${T}"/${ntpunit_name}.list || die

	return ${ret}
}

# @FUNCTION: systemd_with_unitdir
# @USAGE: [<configure-option-name>]
# @DESCRIPTION:
# Note: deprecated and banned in EAPI 6. Please use full --with-...=
# parameter for improved ebuild readability.
#
# Output '--with-systemdsystemunitdir' as expected by systemd-aware configure
# scripts. This function always succeeds. Its output may be quoted in order
# to preserve whitespace in paths. systemd_to_myeconfargs() is preferred over
# this function.
#
# If upstream does use invalid configure option to handle installing systemd
# units (e.g. `--with-systemdunitdir'), you can pass the 'suffix' as an optional
# argument to this function (`$(systemd_with_unitdir systemdunitdir)'). Please
# remember to report a bug upstream as well.
systemd_with_unitdir() {
	[[ ${EAPI:-0} != [012345] ]] && die "${FUNCNAME} is banned in EAPI ${EAPI}, use --with-${1:-systemdsystemunitdir}=\"\$(systemd_get_systemunitdir)\" instead"

	debug-print-function ${FUNCNAME} "${@}"
	local optname=${1:-systemdsystemunitdir}

	echo --with-${optname}="$(systemd_get_systemunitdir)"
}

# @FUNCTION: systemd_with_utildir
# @DESCRIPTION:
# Note: deprecated and banned in EAPI 6. Please use full --with-...=
# parameter for improved ebuild readability.
#
# Output '--with-systemdsystemutildir' as used by some packages to install
# systemd helpers. This function always succeeds. Its output may be quoted
# in order to preserve whitespace in paths.
systemd_with_utildir() {
	[[ ${EAPI:-0} != [012345] ]] && die "${FUNCNAME} is banned in EAPI ${EAPI}, use --with-systemdutildir=\"\$(systemd_get_utildir)\" instead"

	debug-print-function ${FUNCNAME} "${@}"

	echo --with-systemdutildir="$(systemd_get_utildir)"
}

# @FUNCTION: systemd_update_catalog
# @DESCRIPTION:
# Update the journald catalog. This needs to be called after installing
# or removing catalog files. This must be called in pkg_post* phases.
#
# If systemd is not installed, no operation will be done. The catalog
# will be (re)built once systemd is installed.
#
# See: https://www.freedesktop.org/wiki/Software/systemd/catalog
systemd_update_catalog() {
	debug-print-function ${FUNCNAME} "${@}"

	[[ ${EBUILD_PHASE} == post* ]] \
		|| die "${FUNCNAME} disallowed during ${EBUILD_PHASE_FUNC:-${EBUILD_PHASE}}"

	# Make sure to work on the correct system.

	local journalctl=${EPREFIX}/usr/bin/journalctl
	if [[ -x ${journalctl} ]]; then
		ebegin "Updating systemd journal catalogs"
		journalctl --update-catalog
		eend $?
	else
		debug-print "${FUNCNAME}: journalctl not found."
	fi
}

# @FUNCTION: systemd_is_booted
# @DESCRIPTION:
# Check whether the system was booted using systemd.
#
# This should be used purely for informational purposes, e.g. warning
# user that he needs to use systemd. Installed files or application
# behavior *must not* rely on this. Please remember to check MERGE_TYPE
# to not trigger the check on binary package build hosts!
#
# Returns 0 if systemd is used to boot the system, 1 otherwise.
#
# See: man sd_booted
systemd_is_booted() {
	debug-print-function ${FUNCNAME} "${@}"

	[[ -d /run/systemd/system ]]
	local ret=${?}

	debug-print "${FUNCNAME}: [[ -d /run/systemd/system ]] -> ${ret}"
	return ${ret}
}

# @FUNCTION: systemd_tmpfiles_create
# @USAGE: <tmpfilesd> ...
# @DESCRIPTION:
# Invokes systemd-tmpfiles --create with given arguments.
# Does nothing if ROOT != / or systemd-tmpfiles is not in PATH.
# This function should be called from pkg_postinst.
#
# Generally, this function should be called with the names of any tmpfiles
# fragments which have been installed, either by the build system or by a
# previous call to systemd_dotmpfilesd. This ensures that any tmpfiles are
# created without the need to reboot the system.
systemd_tmpfiles_create() {
	debug-print-function ${FUNCNAME} "${@}"

	[[ ${EBUILD_PHASE} == postinst ]] || die "${FUNCNAME}: Only valid in pkg_postinst"
	[[ ${#} -gt 0 ]] || die "${FUNCNAME}: Must specify at least one filename"
	[[ ${ROOT} == / ]] || return 0
	type systemd-tmpfiles &> /dev/null || return 0
	systemd-tmpfiles --create "${@}"
}

# @FUNCTION: systemd_reenable
# @USAGE: <unit> ...
# @DESCRIPTION:
# Re-enables units if they are currently enabled. This resets symlinks to the
# defaults specified in the [Install] section.
#
# This function is intended to fix broken symlinks that result from moving
# the systemd system unit directory. It should be called from pkg_postinst
# for system units that define the 'Alias' option in their [Install] section.
# It is not necessary to call this function to fix dependency symlinks
# generated by the 'WantedBy' and 'RequiredBy' options.
systemd_reenable() {
	type systemctl &>/dev/null || return 0
	local x
	for x; do
		if systemctl --quiet --root="${ROOT}" is-enabled "${x}"; then
			systemctl --root="${ROOT}" reenable "${x}"
		fi
	done
}