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	niro	2	#!/bin/bash
2	niro	931	# $Id$
3	niro	71
4	niro	2	# 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	niro	1093	# location to save the started services
44	niro	2	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	niro	1093	splash() { return 0; }
53	niro	2
54	niro	1093	# source splash functions if exists
55	niro	2	[ -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	niro	71
106	niro	2	#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	niro	505	local error_value="$1"
135			[[ -z ${error_value} ]] && error_value=$?
136	niro	2
137	niro	505	if [[ ${error_value} = 0 ]]
138	niro	2	then
139			print_status success
140			else
141			print_status failure
142			fi
143
144	niro	505	return ${error_value}
145	niro	2	}
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 * $1 / 100 ))" > /proc/splash
342			fi
343			}
344
345	niro	317	kernel_version()
346			{
347			local KV="$(uname -r \| cut -d- -f1)"
348			echo "${KV}"
349			}
350
351	niro	2	kernel_major_version()
352			{
353			local KV
354	niro	317	KV="$(uname -r \| cut -d. -f1-2)"
355	niro	2	echo "${KV}"
356			}
357
358	niro	317	dolisting()
359	niro	2	{
360			local x=
361			local y=
362			local tmpstr=
363			local mylist=
364			local mypath="${*}"
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	niro	147
393			# searches /proc/mounts for mounted fstypes (like ext3)
394	niro	1093	is_fstype_mounted()
395			{
396	niro	147	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	niro	1093	is_fs_mounted()
408			{
409	niro	147	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	niro	1093	kernel_supports_fs()
421			{
422	niro	147	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	niro	274
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	niro	1093	is_older_than()
439			{
440	niro	274	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	niro	1094
457			start_devicemanager() { touch /dev/.none; return 0}
458			stop_devicemanager() { return 0; }