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source: bootscripts/lfs/init.d/functions@ 54dd8b6

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Last change on this file since 54dd8b6 was a6ede08, checked in by Jim Gifford <clfs@…>, 18 years ago
r3512@server: jim \| 2006-05-15 16:13:26 -0700 Updated LCD Support
Property mode set to `100644`
File size: 15.8 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}"
[a6ede08]	92	$LCD_PROG "$LCD_OUT1" > /dev/null 2>&1
[c6e88663]	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 [ "$LCD_PROG" ]; then
[a6ede08]	140	if [ "$LCD_LINES" = "2" ]; then
	141	LCD_OUT2="[ OK ]"
	142	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2" > /dev/null 2>&1
	143	else
	144	LCD_OUT2="${LCD_OUT1:0:12} OK"
	145	$LCD_PROG "$LCD_OUT2" > /dev/null 2>&1
	146	fi
[c6e88663]	147	fi
[163a6701]	148	}
	149
	150	echo_failure()
	151	{
	152	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${FAILURE} FAIL ${BRACKET}]"
	153	echo -e "${NORMAL}"
	154	boot_mesg_flush "[ FAIL ]"
[c6e88663]	155	if [ "$LCD_PROG" ]; then
[a6ede08]	156	if [ "$LCD_LINES" = "2" ]; then
	157	LCD_OUT2="[ FAIL ]"
	158	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2" > /dev/null 2>&1
	159	else
	160	LCD_OUT2="${LCD_OUT1:0:10} FAIL"
	161	$LCD_PROG "$LCD_OUT2" > /dev/null 2>&1
	162	fi
[c6e88663]	163	fi
[163a6701]	164	}
	165
	166	echo_warning()
	167	{
	168	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${WARNING} WARN ${BRACKET}]"
	169	echo -e "${NORMAL}"
[c6e88663]	170	if [ "$LCD_PROG" ]; then
[a6ede08]	171	if [ "$LCD_LINES" = "2" ]; then
	172	LCD_OUT2="[ WARN ]"
	173	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2" > /dev/null 2>&1
	174	else
	175	LCD_OUT2="${LCD_OUT1:0:10} WARN"
	176	$LCD_PROG "$LCD_OUT2" > /dev/null 2>&1
	177	fi
[c6e88663]	178	fi
[163a6701]	179	boot_mesg_flush "[ WARN ]"
	180	}
	181
	182	print_error_msg()
	183	{
	184	echo_failure
	185	# $i is inherited by the rc script
	186	boot_log "\n\n${i} failed and exited with a return value of ${error_value}."
	187	boot_mesg_flush
	188	boot_mesg -n "FAILURE:\n\nYou should not be reading this error message.\n\n" ${FAILURE}
	189	boot_mesg -n " It means that an unforeseen error took"
	190	boot_mesg -n " place in ${i}, which exited with a return value of"
	191	boot_mesg " ${error_value}.\n"
	192	boot_mesg_flush
	193	boot_mesg -n "If you're able to track this"
	194	boot_mesg -n " error down to a bug in one of the files provided by"
	195	boot_mesg -n " the LFS book, please be so kind to inform us at"
	196	boot_mesg " lfs-dev@linuxfromscratch.org.\n"
	197	boot_mesg_flush
	198	boot_mesg -n "Press Enter to continue..." ${INFO}
	199	boot_mesg "" ${NORMAL}
[c6e88663]	200	if [ "$LCD_PROG" ]; then
	201	sleep 10
	202	else
	203	read ENTER
	204	fi
[163a6701]	205	}
	206
	207	check_script_status()
	208	{
	209	# $i is inherited by the rc script
	210	if [ ! -f ${i} ]; then
	211	boot_mesg "${i} is not a valid symlink." ${WARNING}
	212	echo_warning
	213	continue
	214	fi
	215
	216	if [ ! -x ${i} ]; then
	217	boot_mesg "${i} is not executable, skipping." ${WARNING}
	218	echo_warning
	219	continue
	220	fi
	221	}
	222
	223	evaluate_retval()
	224	{
	225	error_value="${?}"
	226
	227	if [ ${error_value} = 0 ]; then
	228	echo_ok
	229	else
	230	echo_failure
	231	fi
	232
	233	# This prevents the 'An Unexpected Error Has Occurred' from trivial
	234	# errors.
	235	return 0
	236	}
	237
	238	print_status()
	239	{
	240	if [ "${#}" = "0" ]; then
	241	echo "Usage: ${0} {success\|warning\|failure}"
	242	return 1
	243	fi
	244
	245	# boot_mesg_flush
	246	# echo_warning
	247
	248	case "${1}" in
	249
	250	success)
	251	echo_ok
	252	;;
	253
	254	warning)
	255	# Leave this extra case in because old scripts
	256	# may call it this way.
	257	case "${2}" in
	258	running)
	259	echo -e -n "${CURS_UP}"
	260	echo -e -n "\\033[${STRING_LENGTH}G "
	261	boot_mesg "Already running." ${WARNING}
	262	echo_warning
	263	;;
	264	not_running)
	265	echo -e -n "${CURS_UP}"
	266	echo -e -n "\\033[${STRING_LENGTH}G "
	267	boot_mesg "Not running." ${WARNING}
	268	echo_warning
	269	;;
	270	not_available)
	271	echo -e -n "${CURS_UP}"
	272	echo -e -n "\\033[${STRING_LENGTH}G "
	273	boot_mesg "Not available." ${WARNING}
	274	echo_warning
	275	;;
	276	*)
	277	# This is how it is supposed to
	278	# be called
	279	echo_warning
	280	;;
	281	esac
	282	;;
	283
	284	failure)
	285	echo_failure
	286	;;
	287
	288	esac
	289
	290	}
	291
	292	reloadproc()
	293	{
	294	if [ "${#}" = "0" ]; then
	295	echo "Usage: reloadproc [{program}]"
	296	exit 1
	297	fi
	298
	299	getpids "${1}"
	300
	301	if [ -n "${pidlist}" ]; then
	302	failure="0"
	303	for pid in ${pidlist}
	304	do
	305	kill -"${RELOADSIG}" "${pid}" \|\| failure="1"
	306	done
	307
	308	(exit ${failure})
	309	evaluate_retval
	310
	311	else
	312	boot_mesg "Process ${1} not running." ${WARNING}
	313	echo_warning
	314	fi
	315	}
	316
	317	statusproc()
	318	{
	319	if [ "${#}" = "0" ]
	320	then
	321	echo "Usage: statusproc {program}"
	322	exit 1
	323	fi
	324
	325	getpids "${1}"
	326
	327	if [ -n "${pidlist}" ]; then
	328	echo -e "${INFO}${base} is running with Process"\
	329	"ID(s) ${pidlist}.${NORMAL}"
	330	else
	331	if [ -n "${base}" -a -e "/var/run/${base}.pid" ]; then
	332	echo -e "${WARNING}${1} is not running but"\
	333	"/var/run/${base}.pid exists.${NORMAL}"
	334	else
	335	if [ -n "${PIDFILE}" -a -e "${PIDFILE}" ]; then
	336	echo -e "${WARNING}${1} is not running"\
	337	"but ${PIDFILE} exists.${NORMAL}"
	338	else
	339	echo -e "${INFO}${1} is not running.${NORMAL}"
	340	fi
	341	fi
	342	fi
	343	}
	344
	345	# The below functions are documented in the LSB-generic 2.1.0
	346
	347	#*******************************************************************************
	348	# Function - pidofproc [-s] [-p pidfile] pathname
	349	#
	350	# Purpose: This function returns one or more pid(s) for a particular daemon
	351	#
	352	# Inputs: -p pidfile, use the specified pidfile instead of pidof
	353	# pathname, path to the specified program
	354	#
	355	# Outputs: return 0 - Success, pid's in stdout
	356	# return 1 - Program is dead, pidfile exists
	357	# return 2 - Invalid or excessive number of arguments,
	358	# warning in stdout
	359	# return 3 - Program is not running
	360	#
	361	# Dependencies: pidof, echo, head
	362	#
	363	# Todo: Remove dependency on head
	364	# This depreciates getpids
	365	# Test changes to pidof
	366	#
	367	#*******************************************************************************
	368	pidofproc()
	369	{
	370	local pidfile=""
	371	local lpids=""
	372	local silent=""
	373	pidlist=""
	374	while true
	375	do
	376	case "${1}" in
	377	-p)
	378	pidfile="${2}"
	379	shift 2
	380	;;
	381
	382	-s)
	383	# Added for legacy opperation of getpids
	384	# eliminates several '> /dev/null'
	385	silent="1"
	386	shift 1
	387	;;
	388	-*)
	389	log_failure_msg "Unknown Option: ${1}"
	390	return 2
	391	;;
	392	*)
	393	break
	394	;;
	395	esac
	396	done
	397
	398	if [ "${#}" != "1" ]; then
	399	shift 1
	400	log_failure_msg "Usage: pidofproc [-s] [-p pidfile] pathname"
	401	return 2
	402	fi
	403
	404	if [ -n "${pidfile}" ]; then
	405	if [ ! -r "${pidfile}" ]; then
	406	return 3 # Program is not running
	407	fi
	408
	409	lpids=`head -n 1 ${pidfile}`
	410	for pid in ${lpids}
	411	do
	412	if [ "${pid}" -ne "$$" -a "${pid}" -ne "${PPID}" ]; then
	413	kill -0 "${pid}" > /dev/null &&
	414	pidlist="${pidlist} ${pid}"
	415	fi
	416
	417	if [ "${silent}" -ne "1" ]; then
	418	echo "${pidlist}"
	419	fi
	420
	421	test -z "${pidlist}" &&
	422	# Program is dead, pidfile exists
	423	return 1
	424	# else
	425	return 0
	426	done
	427
	428	else
	429	pidlist=`pidof -o $$ -o $PPID -x "$1"`
	430	if [ "x${silent}" != "x1" ]; then
	431	echo "${pidlist}"
	432	fi
	433
	434	# Get provide correct running status
	435	if [ -n "${pidlist}" ]; then
	436	return 0
	437	else
	438	return 3
	439	fi
	440
	441	fi
	442
	443	if [ "$?" != "0" ]; then
	444	return 3 # Program is not running
	445	fi
	446	}
	447
	448	# This will ensure compatibility with previous LFS Bootscripts
	449	getpids()
	450	{
	451	if [ -z "${PIDFILE}" ]; then
	452	pidofproc -s -p "${PIDFILE}" $@
	453	else
	454	pidofproc -s $@
	455	fi
	456	base="${1##*/}"
	457	}
	458
	459	#*******************************************************************************
	460	# Function - loadproc [-f] [-n nicelevel] [-p pidfile] pathname [args]
	461	#
	462	# Purpose: This runs the specified program as a daemon
	463	#
	464	# Inputs: -f, run the program even if it is already running
	465	# -n nicelevel, specifies a nice level. See nice(1).
	466	# -p pidfile, uses the specified pidfile
	467	# pathname, pathname to the specified program
	468	# args, arguments to pass to specified program
	469	#
	470	# Outputs: return 0 - Success
	471	# return 2 - Invalid of excessive number of arguments,
	472	# warning in stdout
	473	# return 4 - Program or service status is unknown
	474	#
	475	# Dependencies: nice
	476	#
	477	# Todo: LSB says this should be called start_daemon
	478	# LSB does not say that it should call evaluate_retval
	479	# It checks for PIDFILE, which is deprecated.
	480	# Will be removed after BLFS 6.0
	481	# loadproc returns 0 if program is already running, not LSB compliant
	482	#
	483	#*******************************************************************************
	484	loadproc()
	485	{
	486	local pidfile=""
	487	local forcestart=""
	488	local nicelevel="10"
	489
	490	# This will ensure compatibility with previous LFS Bootscripts
	491	if [ -n "${PIDFILE}" ]; then
	492	pidfile="${PIDFILE}"
	493	fi
	494
	495	while true
	496	do
	497	case "${1}" in
	498	-f)
	499	forcestart="1"
	500	shift 1
	501	;;
	502	-n)
	503	nicelevel="${2}"
	504	shift 2
	505	;;
	506	-p)
	507	pidfile="${2}"
	508	shift 2
	509	;;
	510	-*)
	511	log_failure_msg "Unknown Option: ${1}"
	512	return 2 #invalid or excess argument(s)
	513	;;
	514	*)
	515	break
	516	;;
	517	esac
	518	done
	519
	520	if [ "${#}" = "0" ]; then
	521	log_failure_msg "Usage: loadproc [-f] [-n nicelevel] [-p pidfile] pathname [args]"
	522	return 2 #invalid or excess argument(s)
	523	fi
	524
	525	if [ -z "${forcestart}" ]; then
	526	if [ -z "${pidfile}" ]; then
	527	pidofproc -s "${1}"
	528	else
	529	pidofproc -s -p "${pidfile}" "${1}"
	530	fi
	531
	532	case "${?}" in
	533	0)
	534	log_warning_msg "Unable to continue: ${1} is running"
	535	return 0 # 4
	536	;;
	537	1)
	538	log_warning_msg "Unable to continue: ${pidfile} exists"
	539	return 0 # 4
	540	;;
	541	3)
	542	;;
	543	*)
	544	log_failure_msg "Unknown error code from pidofproc: ${?}"
	545	return 4
	546	;;
	547	esac
	548	fi
	549
	550	nice -n "${nicelevel}" "${@}"
	551	evaluate_retval # This is "Probably" not LSB compliant, but required to be compatible with older bootscripts
	552	return 0
	553	}
	554
	555	#*******************************************************************************
	556	# Function - killproc [-p pidfile] pathname [signal]
	557	#
	558	# Purpose:
	559	#
	560	# Inputs: -p pidfile, uses the specified pidfile
	561	# pathname, pathname to the specified program
	562	# signal, send this signal to pathname
	563	#
	564	# Outputs: return 0 - Success
	565	# return 2 - Invalid of excessive number of arguments,
	566	# warning in stdout
	567	# return 4 - Unknown Status
	568	#
	569	# Dependencies: kill
	570	#
	571	# Todo: LSB does not say that it should call evaluate_retval
	572	# It checks for PIDFILE, which is deprecated.
	573	# Will be removed after BLFS 6.0
	574	#
	575	#*******************************************************************************
	576	killproc()
	577	{
	578	local pidfile=""
	579	local killsig=""
	580	pidlist=""
	581
	582	# This will ensure compatibility with previous LFS Bootscripts
	583	if [ -n "${PIDFILE}" ]; then
	584	pidfile="${PIDFILE}"
	585	fi
	586
	587	while true
	588	do
	589	case "${1}" in
	590	-p)
	591	pidfile="${2}"
	592	shift 2
	593	;;
	594	-*)
	595	log_failure_msg "Unknown Option: ${1}"
	596	return 2
	597	;;
	598	*)
	599	break
	600	;;
	601	esac
	602	done
	603
	604	if [ "${#}" = "2" ]; then
	605	killsig="${2}"
	606	elif [ "${#}" != "1" ]; then
	607	shift 2
	608	log_failure_msg "Usage: killproc [-p pidfile] pathname [signal]"
	609	return 2
	610	fi
	611
	612	if [ -z "${pidfile}" ]; then
	613	pidofproc -s "${1}"
	614	else
	615	pidofproc -s -p "${pidfile}" "${1}"
	616	fi
	617
	618	# Change....
	619	if [ -n "${pidlist}" ]; then
	620	for pid in ${pidlist}
	621	do
	622	kill -${killsig:-TERM} ${pid} 2>/dev/null
	623	if [ -z "${killsig}" ]; then
	624	# Wait up to 3 seconds, for ${pid} to terminate
	625	local dtime=${KILLDELAY}
	626	while [ "${dtime}" != "0" ]
	627	do
	628	kill -0 ${pid} 2>/dev/null \|\| break
	629	sleep 1
	630	dtime=$(( ${dtime} - 1))
	631	done
	632	# If ${pid} is still running, kill it
	633	kill -0 ${pid} 2>/dev/null && kill -KILL ${pid} 2>/dev/null
	634	fi
	635	done
	636
	637	if [ -z "${killsig}" ]; then
	638	pidofproc -s "${1}"
	639
	640	# Program was terminated
	641	if [ "$?" != "0" ]; then
	642	# Pidfile Exists
	643	if [ -f "${pidfile}" ]; then
	644	rm -f "${pidfile}"
	645	fi
	646	echo_ok
	647	return 0
	648	else # Program is still running
	649	echo_failure
	650	return 4 # Unknown Status
	651	fi
	652	else
	653	if [ -z "${pidfile}" ]; then
	654	pidofproc -s "${1}"
	655	else
	656	pidofproc -s -p "${pidfile}" "${1}"
	657	fi
	658	fi
	659
	660	evaluate_retval # This is "Probably" not LSB compliant, but required to be compatible with older bootscripts
	661
	662	else
	663	print_status warning not_running
	664	fi
	665	}
	666
	667
	668	#*******************************************************************************
	669	# Function - log_success_msg "message"
	670	#
	671	# Purpose: Print a success message
	672	#
	673	# Inputs: $@ - Message
	674	#
	675	# Outputs: Text output to screen
	676	#
	677	# Dependencies: echo
	678	#
	679	# Todo: logging
	680	#
	681	#*******************************************************************************
	682	log_success_msg()
	683	{
	684	echo -n -e "${BOOTMESG_PREFIX}${@}"
	685	echo -e "${SET_COL}""${BRACKET}""[""${SUCCESS}"" OK ""${BRACKET}""]""${NORMAL}"
	686	return 0
	687	}
	688
	689	#*******************************************************************************
	690	# Function - log_failure_msg "message"
	691	#
	692	# Purpose: Print a failure message
	693	#
	694	# Inputs: $@ - Message
	695	#
	696	# Outputs: Text output to screen
	697	#
	698	# Dependencies: echo
	699	#
	700	# Todo: logging
	701	#
	702	#*******************************************************************************
	703	log_failure_msg() {
	704	echo -n -e "${BOOTMESG_PREFIX}${@}"
	705	echo -e "${SET_COL}""${BRACKET}""[""${FAILURE}"" FAIL ""${BRACKET}""]""${NORMAL}"
	706	return 0
	707	}
	708
	709	#*******************************************************************************
	710	# Function - log_warning_msg "message"
	711	#
	712	# Purpose: print a warning message
	713	#
	714	# Inputs: $@ - Message
	715	#
	716	# Outputs: Text output to screen
	717	#
	718	# Dependencies: echo
	719	#
	720	# Todo: logging
	721	#
	722	#*******************************************************************************
	723	log_warning_msg() {
	724	echo -n -e "${BOOTMESG_PREFIX}${@}"
	725	echo -e "${SET_COL}""${BRACKET}""[""${WARNING}"" WARN ""${BRACKET}""]""${NORMAL}"
	726	return 0
	727	}
	728
	729	# End $rc_base/init.d/functions

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