Contents of /trunk/busybox-initscripts/rc/functions

#!/bin/sh
# $Header: /home/cvsd/magellan-cvs/magellan-src/busybox-initscripts/rc/functions,v 1.2 2008-06-02 22:53:36 niro Exp $

# 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

rc_echo() { echo $@; }
rc_print() { rc_echo -e "${COLOREDSTAR}$@"; }

# 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 $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/sh
2	# $Header: /home/cvsd/magellan-cvs/magellan-src/busybox-initscripts/rc/functions,v 1.2 2008-06-02 22:53:36 niro Exp $
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	rc_echo() { echo $@; }
51	rc_print() { rc_echo -e "${COLOREDSTAR}$@"; }
52
53	# dummy function; needed if splashutils are not installed
54	splash() { return 0; }
55
56	# source splash functions if exists
57	[ -f /etc/init.d/splash-functions ] && source /etc/init.d/splash-functions
58
59	print_error_msg()
60	{
61	return 0
62	echo
63	$FAILURE
64	echo -e " An Error occurred."
65	echo -e " Script: ${COLWHITE}$i${COLRED}"
66	echo -e " Exitcode: ${COLWHITE}$error_value${COLRED}"
67	echo
68	$NORMAL
69	echo
70	echo "Press Enter to continue..."
71	read
72	}
73
74	check_script_status()
75	{
76	if [ ! -f $i ]
77	then
78	echo "$i is not a valid symlink"
79	continue
80	fi
81
82	if [ ! -x $i ]
83	then
84	echo "$i is not executable, skipping"
85	continue
86	fi
87	}
88
89	update_svcstatus()
90	{
91	#$1 script
92	#$2 start/stop
93
94	local SVCDIR_MOUNTED
95	local SVCD_INITSCRIPT
96	local x
97
98	#do this only if proc is mounted
99	[ ! -f /proc/mounts ] && return 0
100
101	#check if svcdir is mounted
102	SVCDIR_MOUNTED="$(cat /proc/mounts \| grep ${svcdir} \| cut -d ' ' -f2)"
103	if [ "${SVCDIR_MOUNTED}" == "${svcdir}" ]
104	then
105	#check if statedir exists
106	[ ! -d ${svcdir}/started ] && mkdir ${svcdir}/started
107
108	#get real name of the initscript, not from the symlink
109	if [ -L "$0" ]
110	then
111	x="$(readlink $0)"
112	SVCD_INITSCRIPT="$(basename ${x})"
113	else
114	SVCD_INITSCRIPT="$(basename $0)"
115	fi
116
117	case $1 in
118	start)
119	#write to svcddir
120	#write state
121	echo ok > ${svcdir}/started/"${SVCD_INITSCRIPT}"
122	;;
123	stop)
124	#echo "$(ls ${svcdir}/started)"
125	if [ -f ${svcdir}/started/${SVCD_INITSCRIPT} ]
126	then
127	rm ${svcdir}/started/${SVCD_INITSCRIPT}
128	fi
129	;;
130	esac
131	fi
132	}
133
134	evaluate_retval()
135	{
136	local error_value="$1"
137	[[ -z ${error_value} ]] && error_value=$?
138
139	if [[ ${error_value} = 0 ]]
140	then
141	print_status success
142	else
143	print_status failure
144	fi
145
146	return ${error_value}
147	}
148
149	print_status()
150	{
151	if [ $# = 0 ]
152	then
153	echo "Usage: $0 {success\|warning\|failure}"
154	return 1
155	fi
156
157	$CURS_UP
158
159	case "$1" in
160	success)
161	$SET_COL
162	echo -e -n $COLBLUE"[ "
163	$SUCCESS
164	echo -e -n "OK"
165	echo -e $COLBLUE" ]"
166	$NORMAL
167	;;
168	warning)
169	case "$2" in
170	running)
171	$SET_WCOL
172	echo "Already running"
173	$CURS_UP
174	;;
175	not_running)
176	$SET_WCOL
177	echo "Not running"
178	$CURS_UP
179	;;
180	esac
181	$SET_COL
182	echo -e -n $COLBLUE"[ "
183	$WARNING
184	echo -e -n "ATTN"
185	echo -e $COLBLUE" ]"
186	$NORMAL
187	;;
188	failure)
189	$SET_COL
190	echo -e -n $COLBLUE"["
191	$FAILURE
192	echo -e -n "FAILED"
193	echo -e $COLBLUE"]"
194	$NORMAL
195	;;
196	esac
197	}
198
199	getpids()
200	{
201	base=${1##*/}
202	pidlist=$(pidof -o $$ -o $PPID $base)
203	}
204
205	loadproc()
206	{
207	if [ $# = 0 ]
208	then
209	echo "Usage: loadproc {program}"
210	exit 1
211	fi
212
213	getpids $1
214
215	if [ -z "$pidlist" ]
216	then
217	"$@"
218	evaluate_retval
219	else
220	$SET_WCOL
221	print_status warning running
222	fi
223	}
224
225	killproc()
226	{
227	if [ $# = 0 ]
228	then
229	echo "Usage: killproc {program} [signal]"
230	exit 1
231	fi
232
233	if [ -z "$2" ]; then
234	signal=TERM
235	fallback=KILL
236	else
237	signal=${2##-}
238	signal=${signal##SIG}
239	fallback=""
240	fi
241
242	getpids $1
243
244	if [ -n "$pidlist" ]; then
245	failure=0
246
247	for pid in $pidlist
248	do
249	kill -$signal $pid 2>/dev/null
250
251	for ((i=0; $i<5000; i=$i+1)); do :; done
252
253	for ((i=0; $i<$KILLDELAY; i=$i+1)); do
254	kill -0 $pid 2>/dev/null \|\| break
255	sleep 1
256	done
257
258	if [ -n "$fallback" ]; then kill -$fallback $pid 2>/dev/null; fi
259
260	kill -0 $pid 2>/dev/null && failure=1
261	done
262
263	base=${1##*/}
264	if [ $failure = 0 ]; then rm -f /var/run/$base.pid; fi
265
266	(exit $failure)
267	evaluate_retval
268	else
269	$SET_WCOL
270	print_status warning not_running
271	fi
272	}
273
274	reloadproc()
275	{
276	if [ $# = 0 ]
277	then
278	echo "Usage: reloadproc {program} [signal]"
279	exit 1
280	fi
281
282	if [ -z "$2" ]; then
283	signal=HUP
284	else
285	signal=${2##-}
286	signal=${signal##SIG}
287	fi
288
289	getpids $1
290
291	if [ -n "$pidlist" ]
292	then
293	failure=0
294
295	for pid in $pidlist
296	do
297	kill -$signal $pid \|\| failure=1
298	done
299
300	(exit $failure)
301	evaluate_retval
302	else
303	$SET_WCOL
304	print_status warning not_running
305	fi
306	}
307
308	statusproc()
309	{
310	if [ $# = 0 ]
311	then
312	echo "Usage: statusproc {program}"
313	exit 1
314	fi
315
316	base=${1##*/}
317	getpids $base
318
319	if [ -n "$pidlist" ]
320	then
321	echo "$base is running with Process ID(s) $pidlist"
322	else
323	if [ -s /var/run/$base.pid ]
324	then
325	echo "$1 is not running but /var/run/$base.pid exists"
326	return 1
327	else
328	echo "$1 is not running"
329	fi
330	fi
331	}
332
333	progressbar()
334	{
335	if [ $# != 1 ]
336	then
337	echo "Usage: progressbar {progress}"
338	exit 1
339	fi
340
341	if [ -f /proc/splash ]
342	then
343	echo "show $(( 65534 * $1 / 100 ))" > /proc/splash
344	fi
345	}
346
347	kernel_version()
348	{
349	local KV="$(uname -r \| cut -d- -f1)"
350	echo "${KV}"
351	}
352
353	kernel_major_version()
354	{
355	local KV
356	KV="$(uname -r \| cut -d. -f1-2)"
357	echo "${KV}"
358	}
359
360	dolisting()
361	{
362	local x=
363	local y=
364	local tmpstr=
365	local mylist=
366	local mypath="${*}"
367
368	if [ "${mypath%/\*}" != "${mypath}" ]
369	then
370	mypath="${mypath%/\*}"
371	fi
372
373	for x in ${mypath}
374	do
375	[ ! -e "${x}" ] && continue
376
377	if [ ! -d "${x}" ] && ( [ -L "${x}" -o -f "${x}" ] )
378	then
379	mylist="${mylist} $(ls "${x}" 2> /dev/null)"
380	else
381	[ "${x%/}" != "${x}" ] && x="${x%/}"
382
383	cd "${x}"; tmpstr="$(ls)"
384
385	for y in ${tmpstr}
386	do
387	mylist="${mylist} ${x}/${y}"
388	done
389	fi
390	done
391
392	echo "${mylist}"
393	}
394
395	# searches /proc/mounts for mounted fstypes (like ext3)
396	is_fstype_mounted()
397	{
398	local filesys
399	local i
400	filesys=$1
401
402	i="$(cat /proc/mounts \| grep ${filesys} \| cut -d ' ' -f3)"
403	[[ ${i} != ${filesys} ]] && return 1
404
405	return 0
406	}
407
408	# searches /proc/mounts for mounted fs names (like udev, proc)
409	is_fs_mounted()
410	{
411	local filesys
412	local i
413	filesys=$1
414
415	i="$(cat /proc/mounts \| grep ${filesys} \| cut -d ' ' -f1)"
416	[[ ${i} != ${filesys} ]] && return 1
417
418	return 0
419	}
420
421	# checks if kernel supports fs xy
422	kernel_supports_fs()
423	{
424	local filesys
425	local i
426	filesys=$1
427
428	i="$(cat /proc/filesystems \| grep ${filesys} \| cut -d $'\t' -f2)"
429	[[ ${i} != ${filesys} ]] && return 1
430
431	return 0
432	}
433
434	# bool is_older_than(reference, files/dirs to check)
435	#
436	# return 0 if any of the files/dirs are newer than
437	# the reference file
438	#
439	# EXAMPLE: if is_older_than a.out *.o ; then ...
440	is_older_than()
441	{
442	local x=
443	local ref="$1"
444	shift
445
446	for x in "$@"
447	do
448	[[ ${x} -nt ${ref} ]] && return 0
449
450	if [[ -d ${x} ]]
451	then
452	is_older_than "${ref}" "${x}"/* && return 0
453	fi
454	done
455
456	return 1
457	}
458
459	start_devicemanager() { touch /dev/.none; return 0; }
460	stop_devicemanager() { return 0; }