rc.d/init.d/functions

#!/bin/bash
# $Id$

# Begin $rc_base/init.d/functions - Run Level Control Functions

# Based on functions script from LFS-3.1 and earlier.
# Rewritten by Gerard Beekmans  - gerard@linuxfromscratch.org

# With code based on Matthias Benkmann's simpleinit-msb @
# http://winterdrache.de/linux/newboot/index.html

umask 022

export PATH="/bin:/usr/bin:/sbin:/usr/sbin"

KILLDELAY=3

COLUMNS=$(stty size)
COLUMNS=${COLUMNS##* }
COL=$[ $COLUMNS - 10 ]
WCOL=$[ $COLUMNS - 30 ]
WWCOL=$[ $COLUMNS - 40 ]
SET_COL="echo -en \\033[${COL}G"
SET_WCOL="echo -en \\033[${WCOL}G"
SET_WWCOL="echo -en \\033[${WWCOL}G"
CURS_UP="echo -en \\033[A"

NORMAL="echo -en \\033[0;39m"
SUCCESS="echo -en \\033[1;32m"
WARNING="echo -en \\033[1;33m"
FAILURE="echo -en \\033[1;31m"

COLRED="\033[1;6m\033[31m"
COLGREEN="\033[1;6m\033[32m"
COLYELLOW="\033[1;6m\033[33m"
COLBLUE="\033[1;6m\033[34m"
COLMAGENTA="\033[1;6m\033[35m"
COLWHITE="\033[1;6m\033[37m"
COLDEFAULT="\033[0m"

COLOREDSTAR="${COLBLUE}(${COLGREEN}*${COLBLUE})${COLDEFAULT} "

# location to save the started services
svcdir="/var/lib/init.d"
svclib="/lib/rcscripts"
svcmount="no"
svcfstype="tmpfs"
svcsize=1024


# dummy function; needed if splashutils are not installed
splash() { return 0; }

# source splash functions if exists
[ -f /etc/init.d/splash-functions ] && source /etc/init.d/splash-functions

print_error_msg()
{
	return 0
	echo
	$FAILURE
	echo -e "   An Error occurred."
	echo -e "   Script: ${COLWHITE}$i${COLRED}"
	echo -e "   Exitcode: ${COLWHITE}$error_value${COLRED}"
	echo
	$NORMAL
	echo
	echo "Press Enter to continue..."
	read
}

check_script_status()
{
	if [ ! -f $i ]
	then
		echo "$i is not a valid symlink"
		continue
	fi

	if [ ! -x $i ]
	then
		echo "$i is not executable, skipping"
		continue
	fi
}

update_svcstatus()
{
	#$1 script
	#$2 start/stop

	local SVCDIR_MOUNTED
	local SVCD_INITSCRIPT
	local x

	#do this only if proc is mounted
	[ ! -f /proc/mounts ] && return 0

	#check if svcdir is mounted
	SVCDIR_MOUNTED="$(cat /proc/mounts | grep ${svcdir} | cut -d ' ' -f2)"
	if [ "${SVCDIR_MOUNTED}" == "${svcdir}" ]
	then
		#check if statedir exists
		[ ! -d ${svcdir}/started ] && mkdir ${svcdir}/started

		#get real name of the initscript, not from the symlink
		if [ -L "$0" ]
		then
			x="$(readlink $0)"
			SVCD_INITSCRIPT="$(basename ${x})"
		else
			SVCD_INITSCRIPT="$(basename $0)"
		fi

		case $1 in
			start)
				#write to svcddir
				#write state
				echo ok > ${svcdir}/started/"${SVCD_INITSCRIPT}"
				;;
			stop)
				#echo "$(ls ${svcdir}/started)"
				if [ -f ${svcdir}/started/${SVCD_INITSCRIPT} ]
				then
					rm ${svcdir}/started/${SVCD_INITSCRIPT}
				fi
				;;
		esac
	fi
}

evaluate_retval()
{
	local error_value="$1"
	[[ -z ${error_value} ]] && error_value=$?

	if [[ ${error_value} = 0 ]]
	then
		print_status success
	else
		print_status failure
	fi

	return ${error_value}
}

print_status()
{
	if [ $# = 0 ]
	then
		echo "Usage: $0 {success|warning|failure}"
		return 1
	fi

	$CURS_UP

	case "$1" in
		success)
			$SET_COL
			echo -e -n $COLBLUE"[  "
			$SUCCESS
			echo -e -n "OK"
			echo -e $COLBLUE"  ]"
			$NORMAL
			;;
		warning)
			case "$2" in
				running)
					$SET_WCOL
					echo "Already running"
					$CURS_UP
					;;
				not_running)
					$SET_WCOL
					echo "Not running"
					$CURS_UP
					;;
			esac
			$SET_COL
			echo -e -n $COLBLUE"[ "
			$WARNING
			echo -e -n "ATTN"
			echo -e $COLBLUE" ]"
			$NORMAL
			;;
		failure)
			$SET_COL
			echo -e -n $COLBLUE"["
			$FAILURE
			echo -e -n "FAILED"
			echo -e $COLBLUE"]"
			$NORMAL
			;;
	esac
}

getpids()
{
	base=${1##*/}
	pidlist=$(pidof -o $$ -o $PPID -x $base)
}

loadproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: loadproc {program}"
		exit 1
	fi

	getpids $1

	if [ -z "$pidlist" ]
	then
		"$@"
		evaluate_retval
	else
		$SET_WCOL
		print_status warning running
	fi
}

killproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: killproc {program} [signal]"
		exit 1
	fi

	if [ -z "$2" ]; then
		signal=TERM
		fallback=KILL
	else
		signal=${2##-}
		signal=${signal##SIG}
		fallback=""
	fi

	getpids $1

	if [ -n "$pidlist" ]; then
		failure=0

		for pid in $pidlist
		do
			kill -$signal $pid 2>/dev/null

			for ((i=0; $i<5000; i=$i+1)); do :; done

			for ((i=0; $i<$KILLDELAY; i=$i+1)); do
				kill -0 $pid 2>/dev/null || break
				sleep 1
			done

			if [ -n "$fallback" ]; then kill -$fallback $pid 2>/dev/null; fi

			kill -0 $pid 2>/dev/null && failure=1
		done

		base=${1##*/}
		if [ $failure = 0 ]; then rm -f /var/run/$base.pid; fi

		(exit $failure)
		evaluate_retval
	else
		$SET_WCOL
		print_status warning not_running
	fi
}

reloadproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: reloadproc {program} [signal]"
		exit 1
	fi

	if [ -z "$2" ]; then
		signal=HUP
	else
		signal=${2##-}
		signal=${signal##SIG}
	fi

	getpids $1

	if [ -n "$pidlist" ]
	then
		failure=0

		for pid in $pidlist
		do
			kill -$signal $pid || failure=1
		done

		(exit $failure)
		evaluate_retval
	else
		$SET_WCOL
		print_status warning not_running
	fi
}

statusproc()
{
	if [ $# = 0 ]
	then
		echo "Usage: statusproc {program}"
		exit 1
	fi

	base=${1##*/}
	getpids $base

	if [ -n "$pidlist" ]
	then
		echo "$base is running with Process ID(s) $pidlist"
	else
		if [ -s /var/run/$base.pid ]
		then
			echo "$1 is not running but /var/run/$base.pid exists"
			return 1
		else
			echo "$1 is not running"
	 	fi
	fi
}

progressbar()
{
	if [ $# != 1 ]
	then
		echo "Usage: progressbar {progress}"
		exit 1
	fi

	if [ -f /proc/splash ]
	then
		echo "show $(( 65534 * $1 / 100 ))" > /proc/splash
	fi
}

kernel_version()
{
	local KV="$(uname -r | cut -d- -f1)"
	echo "${KV}"
}

kernel_major_version()
{
	local KV
	KV="$(uname -r | cut -d. -f1-2)"
	echo "${KV}"
}

dolisting()
{
	local x=
	local y=
	local tmpstr=
	local mylist=
	local mypath="${*}"

	if [ "${mypath%/\*}" != "${mypath}" ]
	then
		mypath="${mypath%/\*}"
	fi

	for x in ${mypath}
	do
		[ ! -e "${x}" ] && continue

		if [ ! -d "${x}" ] && ( [ -L "${x}" -o -f "${x}" ] )
		then
			mylist="${mylist} $(ls "${x}" 2> /dev/null)"
		else
			[ "${x%/}" != "${x}" ] && x="${x%/}"

			cd "${x}"; tmpstr="$(ls)"

			for y in ${tmpstr}
			do
				mylist="${mylist} ${x}/${y}"
			done
		fi
	done

	echo "${mylist}"
}

# searches /proc/mounts for mounted fstypes (like ext3)
is_fstype_mounted()
{
	local filesys
	local i
	filesys=$1

	i="$(cat /proc/mounts | grep ${filesys} | cut -d ' ' -f3)"
	[[ ${i} != ${filesys} ]] && return 1

	return 0
}

# searches /proc/mounts for mounted fs names (like udev, proc)
is_fs_mounted()
{
	local filesys
	local i
	filesys=$1

	i="$(cat /proc/mounts | grep ${filesys} | cut -d ' ' -f1)"
	[[ ${i} != ${filesys} ]] && return 1

	return 0
}

# checks if kernel supports fs xy
kernel_supports_fs()
{
	local filesys
	local i
	filesys=$1

	i="$(cat /proc/filesystems | grep ${filesys} | cut -d $'\t' -f2)"
	[[ ${i} != ${filesys} ]] && return 1

	return 0
}

# bool is_older_than(reference, files/dirs to check)
#
#   return 0 if any of the files/dirs are newer than
#   the reference file
#
#   EXAMPLE: if is_older_than a.out *.o ; then ...
is_older_than()
{
	local x=
	local ref="$1"
	shift

	for x in "$@"
	do
		[[ ${x} -nt ${ref} ]] && return 0

		if [[ -d ${x} ]]
		then
			is_older_than "${ref}" "${x}"/* && return 0
		fi
	done

	return 1
}

start_devicemanager() { touch /dev/.none; return 0}
stop_devicemanager() { return 0; }
1	#!/bin/bash
2	# $Id$
3
4	# Begin $rc_base/init.d/functions - Run Level Control Functions
5
6	# Based on functions script from LFS-3.1 and earlier.
7	# Rewritten by Gerard Beekmans - gerard@linuxfromscratch.org
8
9	# With code based on Matthias Benkmann's simpleinit-msb @
10	# http://winterdrache.de/linux/newboot/index.html
11
12	umask 022
13
14	export PATH="/bin:/usr/bin:/sbin:/usr/sbin"
15
16	KILLDELAY=3
17
18	COLUMNS=$(stty size)
19	COLUMNS=${COLUMNS##* }
20	COL=$[ $COLUMNS - 10 ]
21	WCOL=$[ $COLUMNS - 30 ]
22	WWCOL=$[ $COLUMNS - 40 ]
23	SET_COL="echo -en \\033[${COL}G"
24	SET_WCOL="echo -en \\033[${WCOL}G"
25	SET_WWCOL="echo -en \\033[${WWCOL}G"
26	CURS_UP="echo -en \\033[A"
27
28	NORMAL="echo -en \\033[0;39m"
29	SUCCESS="echo -en \\033[1;32m"
30	WARNING="echo -en \\033[1;33m"
31	FAILURE="echo -en \\033[1;31m"
32
33	COLRED="\033[1;6m\033[31m"
34	COLGREEN="\033[1;6m\033[32m"
35	COLYELLOW="\033[1;6m\033[33m"
36	COLBLUE="\033[1;6m\033[34m"
37	COLMAGENTA="\033[1;6m\033[35m"
38	COLWHITE="\033[1;6m\033[37m"
39	COLDEFAULT="\033[0m"
40
41	COLOREDSTAR="${COLBLUE}(${COLGREEN}*${COLBLUE})${COLDEFAULT} "
42
43	# location to save the started services
44	svcdir="/var/lib/init.d"
45	svclib="/lib/rcscripts"
46	svcmount="no"
47	svcfstype="tmpfs"
48	svcsize=1024
49
50
51	# dummy function; needed if splashutils are not installed
52	splash() { return 0; }
53
54	# source splash functions if exists
55	[ -f /etc/init.d/splash-functions ] && source /etc/init.d/splash-functions
56
57	print_error_msg()
58	{
59	return 0
60	echo
61	$FAILURE
62	echo -e " An Error occurred."
63	echo -e " Script: ${COLWHITE}$i${COLRED}"
64	echo -e " Exitcode: ${COLWHITE}$error_value${COLRED}"
65	echo
66	$NORMAL
67	echo
68	echo "Press Enter to continue..."
69	read
70	}
71
72	check_script_status()
73	{
74	if [ ! -f $i ]
75	then
76	echo "$i is not a valid symlink"
77	continue
78	fi
79
80	if [ ! -x $i ]
81	then
82	echo "$i is not executable, skipping"
83	continue
84	fi
85	}
86
87	update_svcstatus()
88	{
89	#$1 script
90	#$2 start/stop
91
92	local SVCDIR_MOUNTED
93	local SVCD_INITSCRIPT
94	local x
95
96	#do this only if proc is mounted
97	[ ! -f /proc/mounts ] && return 0
98
99	#check if svcdir is mounted
100	SVCDIR_MOUNTED="$(cat /proc/mounts \| grep ${svcdir} \| cut -d ' ' -f2)"
101	if [ "${SVCDIR_MOUNTED}" == "${svcdir}" ]
102	then
103	#check if statedir exists
104	[ ! -d ${svcdir}/started ] && mkdir ${svcdir}/started
105
106	#get real name of the initscript, not from the symlink
107	if [ -L "$0" ]
108	then
109	x="$(readlink $0)"
110	SVCD_INITSCRIPT="$(basename ${x})"
111	else
112	SVCD_INITSCRIPT="$(basename $0)"
113	fi
114
115	case $1 in
116	start)
117	#write to svcddir
118	#write state
119	echo ok > ${svcdir}/started/"${SVCD_INITSCRIPT}"
120	;;
121	stop)
122	#echo "$(ls ${svcdir}/started)"
123	if [ -f ${svcdir}/started/${SVCD_INITSCRIPT} ]
124	then
125	rm ${svcdir}/started/${SVCD_INITSCRIPT}
126	fi
127	;;
128	esac
129	fi
130	}
131
132	evaluate_retval()
133	{
134	local error_value="$1"
135	[[ -z ${error_value} ]] && error_value=$?
136
137	if [[ ${error_value} = 0 ]]
138	then
139	print_status success
140	else
141	print_status failure
142	fi
143
144	return ${error_value}
145	}
146
147	print_status()
148	{
149	if [ $# = 0 ]
150	then
151	echo "Usage: $0 {success\|warning\|failure}"
152	return 1
153	fi
154
155	$CURS_UP
156
157	case "$1" in
158	success)
159	$SET_COL
160	echo -e -n $COLBLUE"[ "
161	$SUCCESS
162	echo -e -n "OK"
163	echo -e $COLBLUE" ]"
164	$NORMAL
165	;;
166	warning)
167	case "$2" in
168	running)
169	$SET_WCOL
170	echo "Already running"
171	$CURS_UP
172	;;
173	not_running)
174	$SET_WCOL
175	echo "Not running"
176	$CURS_UP
177	;;
178	esac
179	$SET_COL
180	echo -e -n $COLBLUE"[ "
181	$WARNING
182	echo -e -n "ATTN"
183	echo -e $COLBLUE" ]"
184	$NORMAL
185	;;
186	failure)
187	$SET_COL
188	echo -e -n $COLBLUE"["
189	$FAILURE
190	echo -e -n "FAILED"
191	echo -e $COLBLUE"]"
192	$NORMAL
193	;;
194	esac
195	}
196
197	getpids()
198	{
199	base=${1##*/}
200	pidlist=$(pidof -o $$ -o $PPID -x $base)
201	}
202
203	loadproc()
204	{
205	if [ $# = 0 ]
206	then
207	echo "Usage: loadproc {program}"
208	exit 1
209	fi
210
211	getpids $1
212
213	if [ -z "$pidlist" ]
214	then
215	"$@"
216	evaluate_retval
217	else
218	$SET_WCOL
219	print_status warning running
220	fi
221	}
222
223	killproc()
224	{
225	if [ $# = 0 ]
226	then
227	echo "Usage: killproc {program} [signal]"
228	exit 1
229	fi
230
231	if [ -z "$2" ]; then
232	signal=TERM
233	fallback=KILL
234	else
235	signal=${2##-}
236	signal=${signal##SIG}
237	fallback=""
238	fi
239
240	getpids $1
241
242	if [ -n "$pidlist" ]; then
243	failure=0
244
245	for pid in $pidlist
246	do
247	kill -$signal $pid 2>/dev/null
248
249	for ((i=0; $i<5000; i=$i+1)); do :; done
250
251	for ((i=0; $i<$KILLDELAY; i=$i+1)); do
252	kill -0 $pid 2>/dev/null \|\| break
253	sleep 1
254	done
255
256	if [ -n "$fallback" ]; then kill -$fallback $pid 2>/dev/null; fi
257
258	kill -0 $pid 2>/dev/null && failure=1
259	done
260
261	base=${1##*/}
262	if [ $failure = 0 ]; then rm -f /var/run/$base.pid; fi
263
264	(exit $failure)
265	evaluate_retval
266	else
267	$SET_WCOL
268	print_status warning not_running
269	fi
270	}
271
272	reloadproc()
273	{
274	if [ $# = 0 ]
275	then
276	echo "Usage: reloadproc {program} [signal]"
277	exit 1
278	fi
279
280	if [ -z "$2" ]; then
281	signal=HUP
282	else
283	signal=${2##-}
284	signal=${signal##SIG}
285	fi
286
287	getpids $1
288
289	if [ -n "$pidlist" ]
290	then
291	failure=0
292
293	for pid in $pidlist
294	do
295	kill -$signal $pid \|\| failure=1
296	done
297
298	(exit $failure)
299	evaluate_retval
300	else
301	$SET_WCOL
302	print_status warning not_running
303	fi
304	}
305
306	statusproc()
307	{
308	if [ $# = 0 ]
309	then
310	echo "Usage: statusproc {program}"
311	exit 1
312	fi
313
314	base=${1##*/}
315	getpids $base
316
317	if [ -n "$pidlist" ]
318	then
319	echo "$base is running with Process ID(s) $pidlist"
320	else
321	if [ -s /var/run/$base.pid ]
322	then
323	echo "$1 is not running but /var/run/$base.pid exists"
324	return 1
325	else
326	echo "$1 is not running"
327	fi
328	fi
329	}
330
331	progressbar()
332	{
333	if [ $# != 1 ]
334	then
335	echo "Usage: progressbar {progress}"
336	exit 1
337	fi
338
339	if [ -f /proc/splash ]
340	then
341	echo "show $(( 65534 * $1 / 100 ))" > /proc/splash
342	fi
343	}
344
345	kernel_version()
346	{
347	local KV="$(uname -r \| cut -d- -f1)"
348	echo "${KV}"
349	}
350
351	kernel_major_version()
352	{
353	local KV
354	KV="$(uname -r \| cut -d. -f1-2)"
355	echo "${KV}"
356	}
357
358	dolisting()
359	{
360	local x=
361	local y=
362	local tmpstr=
363	local mylist=
364	local mypath="${*}"
365
366	if [ "${mypath%/\*}" != "${mypath}" ]
367	then
368	mypath="${mypath%/\*}"
369	fi
370
371	for x in ${mypath}
372	do
373	[ ! -e "${x}" ] && continue
374
375	if [ ! -d "${x}" ] && ( [ -L "${x}" -o -f "${x}" ] )
376	then
377	mylist="${mylist} $(ls "${x}" 2> /dev/null)"
378	else
379	[ "${x%/}" != "${x}" ] && x="${x%/}"
380
381	cd "${x}"; tmpstr="$(ls)"
382
383	for y in ${tmpstr}
384	do
385	mylist="${mylist} ${x}/${y}"
386	done
387	fi
388	done
389
390	echo "${mylist}"
391	}
392
393	# searches /proc/mounts for mounted fstypes (like ext3)
394	is_fstype_mounted()
395	{
396	local filesys
397	local i
398	filesys=$1
399
400	i="$(cat /proc/mounts \| grep ${filesys} \| cut -d ' ' -f3)"
401	[[ ${i} != ${filesys} ]] && return 1
402
403	return 0
404	}
405
406	# searches /proc/mounts for mounted fs names (like udev, proc)
407	is_fs_mounted()
408	{
409	local filesys
410	local i
411	filesys=$1
412
413	i="$(cat /proc/mounts \| grep ${filesys} \| cut -d ' ' -f1)"
414	[[ ${i} != ${filesys} ]] && return 1
415
416	return 0
417	}
418
419	# checks if kernel supports fs xy
420	kernel_supports_fs()
421	{
422	local filesys
423	local i
424	filesys=$1
425
426	i="$(cat /proc/filesystems \| grep ${filesys} \| cut -d $'\t' -f2)"
427	[[ ${i} != ${filesys} ]] && return 1
428
429	return 0
430	}
431
432	# bool is_older_than(reference, files/dirs to check)
433	#
434	# return 0 if any of the files/dirs are newer than
435	# the reference file
436	#
437	# EXAMPLE: if is_older_than a.out *.o ; then ...
438	is_older_than()
439	{
440	local x=
441	local ref="$1"
442	shift
443
444	for x in "$@"
445	do
446	[[ ${x} -nt ${ref} ]] && return 0
447
448	if [[ -d ${x} ]]
449	then
450	is_older_than "${ref}" "${x}"/* && return 0
451	fi
452	done
453
454	return 1
455	}
456
457	start_devicemanager() { touch /dev/.none; return 0}
458	stop_devicemanager() { return 0; }