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source: bootscripts/lfs/init.d/functions@ ec723bb

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Last change on this file since ec723bb was ec723bb, checked in by Jim Gifford <clfs@…>, 19 years ago
Put the correct change in for the LCD Fix.
Property mode set to `100644`
File size: 15.4 KB

Rev	Line
[163a6701]	1	#!/bin/sh
	2	########################################################################
	3	# Begin $rc_base/init.d/functions
	4	#
	5	# Description : Run Level Control Functions
	6	#
	7	# Authors : Gerard Beekmans - gerard@linuxfromscratch.org
	8	#
	9	# Version : 00.00
	10	#
	11	# Notes : With code based on Matthias Benkmann's simpleinit-msb
	12	# http://winterdrache.de/linux/newboot/index.html
	13	#
	14	########################################################################
	15
[c6e88663]	16	if [ -e /etc/sysconfig/lcd ]; then
[2676abb]	17	if [ -e /dev/lcd ]; then
	18	source /etc/sysconfig/lcd
	19	fi
[c6e88663]	20	fi
	21
[163a6701]	22	## Environmental setup
	23	# Setup default values for environment
	24	umask 022
	25	export PATH="/bin:/usr/bin:/sbin:/usr/sbin"
	26
	27	# Signal sent to running processes to refresh their configuration
	28	RELOADSIG="HUP"
	29
	30	# Number of seconds between STOPSIG and FALLBACK when stopping processes
	31	KILLDELAY="3"
	32
	33	## Screen Dimensions
	34	# Find current screen size
	35	if [ -z "${COLUMNS}" ]; then
	36	COLUMNS=$(stty size)
	37	COLUMNS=${COLUMNS##* }
	38	fi
	39
	40	# When using remote connections, such as a serial port, stty size returns 0
	41	if [ "${COLUMNS}" = "0" ]; then
	42	COLUMNS=80
	43	fi
	44
	45	## Measurements for positioning result messages
	46	COL=$((${COLUMNS} - 8))
	47	WCOL=$((${COL} - 2))
	48
	49	## Set Cursor Position Commands, used via echo -e
	50	SET_COL="\\033[${COL}G" # at the $COL char
	51	SET_WCOL="\\033[${WCOL}G" # at the $WCOL char
	52	CURS_UP="\\033[1A\\033[0G" # Up one line, at the 0'th char
	53
	54	## Set color commands, used via echo -e
	55	# Please consult `man console_codes for more information
	56	# under the "ECMA-48 Set Graphics Rendition" section
	57	#
	58	# Warning: when switching from a 8bit to a 9bit font,
	59	# the linux console will reinterpret the bold (1;) to
	60	# the top 256 glyphs of the 9bit font. This does
	61	# not affect framebuffer consoles
	62	NORMAL="\\033[0;39m" # Standard console grey
	63	SUCCESS="\\033[1;32m" # Success is green
	64	WARNING="\\033[1;33m" # Warnings are yellow
	65	FAILURE="\\033[1;31m" # Failures are red
	66	INFO="\\033[1;36m" # Information is light cyan
	67	BRACKET="\\033[1;34m" # Brackets are blue
	68
	69	STRING_LENGTH="0" # the length of the current message
	70
	71	#*******************************************************************************
	72	# Function - boot_mesg()
	73	#
	74	# Purpose: Sending information from bootup scripts to the console
	75	#
	76	# Inputs: $1 is the message
	77	# $2 is the colorcode for the console
	78	#
	79	# Outputs: Standard Output
	80	#
	81	# Dependencies: - sed for parsing strings.
	82	# - grep for counting string length.
	83	#
	84	# Todo:
	85	#*******************************************************************************
	86	boot_mesg()
	87	{
	88	local ECHOPARM=""
	89
[c6e88663]	90	if [ "$LCD_PROG" ]; then
	91	LCD_OUT1="${1:0:$LCD_CHAR}"
	92	$LCD_PROG "$LCD_OUT1"
	93	fi
	94
[163a6701]	95	while true
	96	do
	97	case "${1}" in
	98	-n)
	99	ECHOPARM=" -n "
	100	shift 1
	101	;;
	102	-*)
	103	echo "Unknown Option: ${1}"
	104	return 1
	105	;;
	106	*)
	107	break
	108	;;
	109	esac
	110	done
	111
	112	## Figure out the length of what is to be printed to be used
	113	## for warning messges.
	114	STRING_LENGTH="`echo "${1}" \| sed \
	115	-e 's,.,.,g' -e 'l 1' \| grep -c \$`"
	116
	117	# Print the message to the screen
	118	echo ${ECHOPARM} -e "${2}${1}"
	119
	120	}
	121
	122	boot_mesg_flush()
	123	{
	124	# Reset STRING_LENGTH for next message
	125	STRING_LENGTH="0"
	126	}
	127
	128	boot_log()
	129	{
	130	# Left in for backwards compatibility
	131	echo -n ""
	132	}
	133
	134	echo_ok()
	135	{
	136	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${SUCCESS} OK ${BRACKET}]"
	137	echo -e "${NORMAL}"
	138	boot_mesg_flush "[ OK ]"
[c6e88663]	139	if [ "$LCD_PROG" ]; then
	140	LCD_OUT2="[ OK ]"
[600339f5]	141	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2"
[c6e88663]	142	fi
[163a6701]	143	}
	144
	145	echo_failure()
	146	{
	147	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${FAILURE} FAIL ${BRACKET}]"
	148	echo -e "${NORMAL}"
	149	boot_mesg_flush "[ FAIL ]"
[c6e88663]	150	if [ "$LCD_PROG" ]; then
	151	LCD_OUT2="[ FAIL ]"
[600339f5]	152	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2"
[c6e88663]	153	fi
[163a6701]	154	}
	155
	156	echo_warning()
	157	{
	158	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${WARNING} WARN ${BRACKET}]"
	159	echo -e "${NORMAL}"
[c6e88663]	160	if [ "$LCD_PROG" ]; then
	161	LCD_OUT2="[ WARN ]"
[600339f5]	162	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2"
[c6e88663]	163	fi
[163a6701]	164	boot_mesg_flush "[ WARN ]"
	165	}
	166
	167	print_error_msg()
	168	{
	169	echo_failure
	170	# $i is inherited by the rc script
	171	boot_log "\n\n${i} failed and exited with a return value of ${error_value}."
	172	boot_mesg_flush
	173	boot_mesg -n "FAILURE:\n\nYou should not be reading this error message.\n\n" ${FAILURE}
	174	boot_mesg -n " It means that an unforeseen error took"
	175	boot_mesg -n " place in ${i}, which exited with a return value of"
	176	boot_mesg " ${error_value}.\n"
	177	boot_mesg_flush
	178	boot_mesg -n "If you're able to track this"
	179	boot_mesg -n " error down to a bug in one of the files provided by"
	180	boot_mesg -n " the LFS book, please be so kind to inform us at"
	181	boot_mesg " lfs-dev@linuxfromscratch.org.\n"
	182	boot_mesg_flush
	183	boot_mesg -n "Press Enter to continue..." ${INFO}
	184	boot_mesg "" ${NORMAL}
[c6e88663]	185	if [ "$LCD_PROG" ]; then
	186	sleep 10
	187	else
	188	read ENTER
	189	fi
[163a6701]	190	}
	191
	192	check_script_status()
	193	{
	194	# $i is inherited by the rc script
	195	if [ ! -f ${i} ]; then
	196	boot_mesg "${i} is not a valid symlink." ${WARNING}
	197	echo_warning
	198	continue
	199	fi
	200
	201	if [ ! -x ${i} ]; then
	202	boot_mesg "${i} is not executable, skipping." ${WARNING}
	203	echo_warning
	204	continue
	205	fi
	206	}
	207
	208	evaluate_retval()
	209	{
	210	error_value="${?}"
	211
	212	if [ ${error_value} = 0 ]; then
	213	echo_ok
	214	else
	215	echo_failure
	216	fi
	217
	218	# This prevents the 'An Unexpected Error Has Occurred' from trivial
	219	# errors.
	220	return 0
	221	}
	222
	223	print_status()
	224	{
	225	if [ "${#}" = "0" ]; then
	226	echo "Usage: ${0} {success\|warning\|failure}"
	227	return 1
	228	fi
	229
	230	# boot_mesg_flush
	231	# echo_warning
	232
	233	case "${1}" in
	234
	235	success)
	236	echo_ok
	237	;;
	238
	239	warning)
	240	# Leave this extra case in because old scripts
	241	# may call it this way.
	242	case "${2}" in
	243	running)
	244	echo -e -n "${CURS_UP}"
	245	echo -e -n "\\033[${STRING_LENGTH}G "
	246	boot_mesg "Already running." ${WARNING}
	247	echo_warning
	248	;;
	249	not_running)
	250	echo -e -n "${CURS_UP}"
	251	echo -e -n "\\033[${STRING_LENGTH}G "
	252	boot_mesg "Not running." ${WARNING}
	253	echo_warning
	254	;;
	255	not_available)
	256	echo -e -n "${CURS_UP}"
	257	echo -e -n "\\033[${STRING_LENGTH}G "
	258	boot_mesg "Not available." ${WARNING}
	259	echo_warning
	260	;;
	261	*)
	262	# This is how it is supposed to
	263	# be called
	264	echo_warning
	265	;;
	266	esac
	267	;;
	268
	269	failure)
	270	echo_failure
	271	;;
	272
	273	esac
	274
	275	}
	276
	277	reloadproc()
	278	{
	279	if [ "${#}" = "0" ]; then
	280	echo "Usage: reloadproc [{program}]"
	281	exit 1
	282	fi
	283
	284	getpids "${1}"
	285
	286	if [ -n "${pidlist}" ]; then
	287	failure="0"
	288	for pid in ${pidlist}
	289	do
	290	kill -"${RELOADSIG}" "${pid}" \|\| failure="1"
	291	done
	292
	293	(exit ${failure})
	294	evaluate_retval
	295
	296	else
	297	boot_mesg "Process ${1} not running." ${WARNING}
	298	echo_warning
	299	fi
	300	}
	301
	302	statusproc()
	303	{
	304	if [ "${#}" = "0" ]
	305	then
	306	echo "Usage: statusproc {program}"
	307	exit 1
	308	fi
	309
	310	getpids "${1}"
	311
	312	if [ -n "${pidlist}" ]; then
	313	echo -e "${INFO}${base} is running with Process"\
	314	"ID(s) ${pidlist}.${NORMAL}"
	315	else
	316	if [ -n "${base}" -a -e "/var/run/${base}.pid" ]; then
	317	echo -e "${WARNING}${1} is not running but"\
	318	"/var/run/${base}.pid exists.${NORMAL}"
	319	else
	320	if [ -n "${PIDFILE}" -a -e "${PIDFILE}" ]; then
	321	echo -e "${WARNING}${1} is not running"\
	322	"but ${PIDFILE} exists.${NORMAL}"
	323	else
	324	echo -e "${INFO}${1} is not running.${NORMAL}"
	325	fi
	326	fi
	327	fi
	328	}
	329
	330	# The below functions are documented in the LSB-generic 2.1.0
	331
	332	#*******************************************************************************
	333	# Function - pidofproc [-s] [-p pidfile] pathname
	334	#
	335	# Purpose: This function returns one or more pid(s) for a particular daemon
	336	#
	337	# Inputs: -p pidfile, use the specified pidfile instead of pidof
	338	# pathname, path to the specified program
	339	#
	340	# Outputs: return 0 - Success, pid's in stdout
	341	# return 1 - Program is dead, pidfile exists
	342	# return 2 - Invalid or excessive number of arguments,
	343	# warning in stdout
	344	# return 3 - Program is not running
	345	#
	346	# Dependencies: pidof, echo, head
	347	#
	348	# Todo: Remove dependency on head
	349	# This depreciates getpids
	350	# Test changes to pidof
	351	#
	352	#*******************************************************************************
	353	pidofproc()
	354	{
	355	local pidfile=""
	356	local lpids=""
	357	local silent=""
	358	pidlist=""
	359	while true
	360	do
	361	case "${1}" in
	362	-p)
	363	pidfile="${2}"
	364	shift 2
	365	;;
	366
	367	-s)
	368	# Added for legacy opperation of getpids
	369	# eliminates several '> /dev/null'
	370	silent="1"
	371	shift 1
	372	;;
	373	-*)
	374	log_failure_msg "Unknown Option: ${1}"
	375	return 2
	376	;;
	377	*)
	378	break
	379	;;
	380	esac
	381	done
	382
	383	if [ "${#}" != "1" ]; then
	384	shift 1
	385	log_failure_msg "Usage: pidofproc [-s] [-p pidfile] pathname"
	386	return 2
	387	fi
	388
	389	if [ -n "${pidfile}" ]; then
	390	if [ ! -r "${pidfile}" ]; then
	391	return 3 # Program is not running
	392	fi
	393
	394	lpids=`head -n 1 ${pidfile}`
	395	for pid in ${lpids}
	396	do
	397	if [ "${pid}" -ne "$$" -a "${pid}" -ne "${PPID}" ]; then
	398	kill -0 "${pid}" > /dev/null &&
	399	pidlist="${pidlist} ${pid}"
	400	fi
	401
	402	if [ "${silent}" -ne "1" ]; then
	403	echo "${pidlist}"
	404	fi
	405
	406	test -z "${pidlist}" &&
	407	# Program is dead, pidfile exists
	408	return 1
	409	# else
	410	return 0
	411	done
	412
	413	else
	414	pidlist=`pidof -o $$ -o $PPID -x "$1"`
	415	if [ "x${silent}" != "x1" ]; then
	416	echo "${pidlist}"
	417	fi
	418
	419	# Get provide correct running status
	420	if [ -n "${pidlist}" ]; then
	421	return 0
	422	else
	423	return 3
	424	fi
	425
	426	fi
	427
	428	if [ "$?" != "0" ]; then
	429	return 3 # Program is not running
	430	fi
	431	}
	432
	433	# This will ensure compatibility with previous LFS Bootscripts
	434	getpids()
	435	{
	436	if [ -z "${PIDFILE}" ]; then
	437	pidofproc -s -p "${PIDFILE}" $@
	438	else
	439	pidofproc -s $@
	440	fi
	441	base="${1##*/}"
	442	}
	443
	444	#*******************************************************************************
	445	# Function - loadproc [-f] [-n nicelevel] [-p pidfile] pathname [args]
	446	#
	447	# Purpose: This runs the specified program as a daemon
	448	#
	449	# Inputs: -f, run the program even if it is already running
	450	# -n nicelevel, specifies a nice level. See nice(1).
	451	# -p pidfile, uses the specified pidfile
	452	# pathname, pathname to the specified program
	453	# args, arguments to pass to specified program
	454	#
	455	# Outputs: return 0 - Success
	456	# return 2 - Invalid of excessive number of arguments,
	457	# warning in stdout
	458	# return 4 - Program or service status is unknown
	459	#
	460	# Dependencies: nice
	461	#
	462	# Todo: LSB says this should be called start_daemon
	463	# LSB does not say that it should call evaluate_retval
	464	# It checks for PIDFILE, which is deprecated.
	465	# Will be removed after BLFS 6.0
	466	# loadproc returns 0 if program is already running, not LSB compliant
	467	#
	468	#*******************************************************************************
	469	loadproc()
	470	{
	471	local pidfile=""
	472	local forcestart=""
	473	local nicelevel="10"
	474
	475	# This will ensure compatibility with previous LFS Bootscripts
	476	if [ -n "${PIDFILE}" ]; then
	477	pidfile="${PIDFILE}"
	478	fi
	479
	480	while true
	481	do
	482	case "${1}" in
	483	-f)
	484	forcestart="1"
	485	shift 1
	486	;;
	487	-n)
	488	nicelevel="${2}"
	489	shift 2
	490	;;
	491	-p)
	492	pidfile="${2}"
	493	shift 2
	494	;;
	495	-*)
	496	log_failure_msg "Unknown Option: ${1}"
	497	return 2 #invalid or excess argument(s)
	498	;;
	499	*)
	500	break
	501	;;
	502	esac
	503	done
	504
	505	if [ "${#}" = "0" ]; then
	506	log_failure_msg "Usage: loadproc [-f] [-n nicelevel] [-p pidfile] pathname [args]"
	507	return 2 #invalid or excess argument(s)
	508	fi
	509
	510	if [ -z "${forcestart}" ]; then
	511	if [ -z "${pidfile}" ]; then
	512	pidofproc -s "${1}"
	513	else
	514	pidofproc -s -p "${pidfile}" "${1}"
	515	fi
	516
	517	case "${?}" in
	518	0)
	519	log_warning_msg "Unable to continue: ${1} is running"
	520	return 0 # 4
	521	;;
	522	1)
	523	log_warning_msg "Unable to continue: ${pidfile} exists"
	524	return 0 # 4
	525	;;
	526	3)
	527	;;
	528	*)
	529	log_failure_msg "Unknown error code from pidofproc: ${?}"
	530	return 4
	531	;;
	532	esac
	533	fi
	534
	535	nice -n "${nicelevel}" "${@}"
	536	evaluate_retval # This is "Probably" not LSB compliant, but required to be compatible with older bootscripts
	537	return 0
	538	}
	539
	540	#*******************************************************************************
	541	# Function - killproc [-p pidfile] pathname [signal]
	542	#
	543	# Purpose:
	544	#
	545	# Inputs: -p pidfile, uses the specified pidfile
	546	# pathname, pathname to the specified program
	547	# signal, send this signal to pathname
	548	#
	549	# Outputs: return 0 - Success
	550	# return 2 - Invalid of excessive number of arguments,
	551	# warning in stdout
	552	# return 4 - Unknown Status
	553	#
	554	# Dependencies: kill
	555	#
	556	# Todo: LSB does not say that it should call evaluate_retval
	557	# It checks for PIDFILE, which is deprecated.
	558	# Will be removed after BLFS 6.0
	559	#
	560	#*******************************************************************************
	561	killproc()
	562	{
	563	local pidfile=""
	564	local killsig=""
	565	pidlist=""
	566
	567	# This will ensure compatibility with previous LFS Bootscripts
	568	if [ -n "${PIDFILE}" ]; then
	569	pidfile="${PIDFILE}"
	570	fi
	571
	572	while true
	573	do
	574	case "${1}" in
	575	-p)
	576	pidfile="${2}"
	577	shift 2
	578	;;
	579	-*)
	580	log_failure_msg "Unknown Option: ${1}"
	581	return 2
	582	;;
	583	*)
	584	break
	585	;;
	586	esac
	587	done
	588
	589	if [ "${#}" = "2" ]; then
	590	killsig="${2}"
	591	elif [ "${#}" != "1" ]; then
	592	shift 2
	593	log_failure_msg "Usage: killproc [-p pidfile] pathname [signal]"
	594	return 2
	595	fi
	596
	597	if [ -z "${pidfile}" ]; then
	598	pidofproc -s "${1}"
	599	else
	600	pidofproc -s -p "${pidfile}" "${1}"
	601	fi
	602
	603	# Change....
	604	if [ -n "${pidlist}" ]; then
	605	for pid in ${pidlist}
	606	do
	607	kill -${killsig:-TERM} ${pid} 2>/dev/null
	608	if [ -z "${killsig}" ]; then
	609	# Wait up to 3 seconds, for ${pid} to terminate
	610	local dtime=${KILLDELAY}
	611	while [ "${dtime}" != "0" ]
	612	do
	613	kill -0 ${pid} 2>/dev/null \|\| break
	614	sleep 1
	615	dtime=$(( ${dtime} - 1))
	616	done
	617	# If ${pid} is still running, kill it
	618	kill -0 ${pid} 2>/dev/null && kill -KILL ${pid} 2>/dev/null
	619	fi
	620	done
	621
	622	if [ -z "${killsig}" ]; then
	623	pidofproc -s "${1}"
	624
	625	# Program was terminated
	626	if [ "$?" != "0" ]; then
	627	# Pidfile Exists
	628	if [ -f "${pidfile}" ]; then
	629	rm -f "${pidfile}"
	630	fi
	631	echo_ok
	632	return 0
	633	else # Program is still running
	634	echo_failure
	635	return 4 # Unknown Status
	636	fi
	637	else
	638	if [ -z "${pidfile}" ]; then
	639	pidofproc -s "${1}"
	640	else
	641	pidofproc -s -p "${pidfile}" "${1}"
	642	fi
	643	fi
	644
	645	evaluate_retval # This is "Probably" not LSB compliant, but required to be compatible with older bootscripts
	646
	647	else
	648	print_status warning not_running
	649	fi
	650	}
	651
	652
	653	#*******************************************************************************
	654	# Function - log_success_msg "message"
	655	#
	656	# Purpose: Print a success message
	657	#
	658	# Inputs: $@ - Message
	659	#
	660	# Outputs: Text output to screen
	661	#
	662	# Dependencies: echo
	663	#
	664	# Todo: logging
	665	#
	666	#*******************************************************************************
	667	log_success_msg()
	668	{
	669	echo -n -e "${BOOTMESG_PREFIX}${@}"
	670	echo -e "${SET_COL}""${BRACKET}""[""${SUCCESS}"" OK ""${BRACKET}""]""${NORMAL}"
	671	return 0
	672	}
	673
	674	#*******************************************************************************
	675	# Function - log_failure_msg "message"
	676	#
	677	# Purpose: Print a failure message
	678	#
	679	# Inputs: $@ - Message
	680	#
	681	# Outputs: Text output to screen
	682	#
	683	# Dependencies: echo
	684	#
	685	# Todo: logging
	686	#
	687	#*******************************************************************************
	688	log_failure_msg() {
	689	echo -n -e "${BOOTMESG_PREFIX}${@}"
	690	echo -e "${SET_COL}""${BRACKET}""[""${FAILURE}"" FAIL ""${BRACKET}""]""${NORMAL}"
	691	return 0
	692	}
	693
	694	#*******************************************************************************
	695	# Function - log_warning_msg "message"
	696	#
	697	# Purpose: print a warning message
	698	#
	699	# Inputs: $@ - Message
	700	#
	701	# Outputs: Text output to screen
	702	#
	703	# Dependencies: echo
	704	#
	705	# Todo: logging
	706	#
	707	#*******************************************************************************
	708	log_warning_msg() {
	709	echo -n -e "${BOOTMESG_PREFIX}${@}"
	710	echo -e "${SET_COL}""${BRACKET}""[""${WARNING}"" WARN ""${BRACKET}""]""${NORMAL}"
	711	return 0
	712	}
	713
	714	# End $rc_base/init.d/functions

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