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source: bootscripts/lfs/init.d/functions@ fa81409

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Last change on this file since fa81409 was 6c32364, checked in by Jim Gifford <clfs@…>, 18 years ago
r4177@server: jim \| 2006-06-29 16:00:12 -0700 Disable interactive Prompts. Added ccheck for /etc/sysconfig/createfiles.
Property mode set to `100644`
File size: 15.9 KB

Rev	Line
[163a6701]	1	#!/bin/sh
	2	########################################################################
	3	# Begin $rc_base/init.d/functions
	4	#
	5	# Description : Run Level Control Functions
	6	#
	7	# Authors : Gerard Beekmans - gerard@linuxfromscratch.org
	8	#
	9	# Version : 00.00
	10	#
	11	# Notes : With code based on Matthias Benkmann's simpleinit-msb
	12	# http://winterdrache.de/linux/newboot/index.html
	13	#
	14	########################################################################
	15
[c6e88663]	16	if [ -e /etc/sysconfig/lcd ]; then
[2676abb]	17	if [ -e /dev/lcd ]; then
	18	source /etc/sysconfig/lcd
	19	fi
[c6e88663]	20	fi
	21
[6c32364]	22	if [ -e /etc/sysconfig/bootscripts ]; then
	23	source /etc/sysconfig/bootscripts
	24	fi
	25
[163a6701]	26	## Environmental setup
	27	# Setup default values for environment
	28	umask 022
	29	export PATH="/bin:/usr/bin:/sbin:/usr/sbin"
	30
	31	# Signal sent to running processes to refresh their configuration
	32	RELOADSIG="HUP"
	33
	34	# Number of seconds between STOPSIG and FALLBACK when stopping processes
	35	KILLDELAY="3"
	36
	37	## Screen Dimensions
	38	# Find current screen size
	39	if [ -z "${COLUMNS}" ]; then
	40	COLUMNS=$(stty size)
	41	COLUMNS=${COLUMNS##* }
	42	fi
	43
	44	# When using remote connections, such as a serial port, stty size returns 0
	45	if [ "${COLUMNS}" = "0" ]; then
	46	COLUMNS=80
	47	fi
	48
	49	## Measurements for positioning result messages
	50	COL=$((${COLUMNS} - 8))
	51	WCOL=$((${COL} - 2))
	52
	53	## Set Cursor Position Commands, used via echo -e
	54	SET_COL="\\033[${COL}G" # at the $COL char
	55	SET_WCOL="\\033[${WCOL}G" # at the $WCOL char
	56	CURS_UP="\\033[1A\\033[0G" # Up one line, at the 0'th char
	57
	58	## Set color commands, used via echo -e
	59	# Please consult `man console_codes for more information
	60	# under the "ECMA-48 Set Graphics Rendition" section
	61	#
	62	# Warning: when switching from a 8bit to a 9bit font,
	63	# the linux console will reinterpret the bold (1;) to
	64	# the top 256 glyphs of the 9bit font. This does
	65	# not affect framebuffer consoles
	66	NORMAL="\\033[0;39m" # Standard console grey
	67	SUCCESS="\\033[1;32m" # Success is green
	68	WARNING="\\033[1;33m" # Warnings are yellow
	69	FAILURE="\\033[1;31m" # Failures are red
	70	INFO="\\033[1;36m" # Information is light cyan
	71	BRACKET="\\033[1;34m" # Brackets are blue
	72
	73	STRING_LENGTH="0" # the length of the current message
	74
	75	#*******************************************************************************
	76	# Function - boot_mesg()
	77	#
	78	# Purpose: Sending information from bootup scripts to the console
	79	#
	80	# Inputs: $1 is the message
	81	# $2 is the colorcode for the console
	82	#
	83	# Outputs: Standard Output
	84	#
	85	# Dependencies: - sed for parsing strings.
	86	# - grep for counting string length.
	87	#
	88	# Todo:
	89	#*******************************************************************************
	90	boot_mesg()
	91	{
	92	local ECHOPARM=""
	93
[c6e88663]	94	if [ "$LCD_PROG" ]; then
	95	LCD_OUT1="${1:0:$LCD_CHAR}"
[a6ede08]	96	$LCD_PROG "$LCD_OUT1" > /dev/null 2>&1
[c6e88663]	97	fi
	98
[163a6701]	99	while true
	100	do
	101	case "${1}" in
	102	-n)
	103	ECHOPARM=" -n "
	104	shift 1
	105	;;
	106	-*)
	107	echo "Unknown Option: ${1}"
	108	return 1
	109	;;
	110	*)
	111	break
	112	;;
	113	esac
	114	done
	115
	116	## Figure out the length of what is to be printed to be used
	117	## for warning messges.
	118	STRING_LENGTH="`echo "${1}" \| sed \
	119	-e 's,.,.,g' -e 'l 1' \| grep -c \$`"
	120
	121	# Print the message to the screen
	122	echo ${ECHOPARM} -e "${2}${1}"
	123
	124	}
	125
	126	boot_mesg_flush()
	127	{
	128	# Reset STRING_LENGTH for next message
	129	STRING_LENGTH="0"
	130	}
	131
	132	boot_log()
	133	{
	134	# Left in for backwards compatibility
	135	echo -n ""
	136	}
	137
	138	echo_ok()
	139	{
	140	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${SUCCESS} OK ${BRACKET}]"
	141	echo -e "${NORMAL}"
	142	boot_mesg_flush "[ OK ]"
[c6e88663]	143	if [ "$LCD_PROG" ]; then
[a6ede08]	144	if [ "$LCD_LINES" = "2" ]; then
	145	LCD_OUT2="[ OK ]"
	146	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2" > /dev/null 2>&1
	147	else
	148	LCD_OUT2="${LCD_OUT1:0:12} OK"
	149	$LCD_PROG "$LCD_OUT2" > /dev/null 2>&1
	150	fi
[c6e88663]	151	fi
[163a6701]	152	}
	153
	154	echo_failure()
	155	{
	156	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${FAILURE} FAIL ${BRACKET}]"
	157	echo -e "${NORMAL}"
	158	boot_mesg_flush "[ FAIL ]"
[c6e88663]	159	if [ "$LCD_PROG" ]; then
[a6ede08]	160	if [ "$LCD_LINES" = "2" ]; then
	161	LCD_OUT2="[ FAIL ]"
	162	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2" > /dev/null 2>&1
	163	else
	164	LCD_OUT2="${LCD_OUT1:0:10} FAIL"
	165	$LCD_PROG "$LCD_OUT2" > /dev/null 2>&1
	166	fi
[c6e88663]	167	fi
[163a6701]	168	}
	169
	170	echo_warning()
	171	{
	172	echo -n -e "${CURS_UP}${SET_COL}${BRACKET}[${WARNING} WARN ${BRACKET}]"
	173	echo -e "${NORMAL}"
[c6e88663]	174	if [ "$LCD_PROG" ]; then
[a6ede08]	175	if [ "$LCD_LINES" = "2" ]; then
	176	LCD_OUT2="[ WARN ]"
	177	$LCD_PROG "$LCD_OUT1" "$LCD_OUT2" > /dev/null 2>&1
	178	else
	179	LCD_OUT2="${LCD_OUT1:0:10} WARN"
	180	$LCD_PROG "$LCD_OUT2" > /dev/null 2>&1
	181	fi
[c6e88663]	182	fi
[163a6701]	183	boot_mesg_flush "[ WARN ]"
	184	}
	185
	186	print_error_msg()
	187	{
	188	echo_failure
	189	# $i is inherited by the rc script
	190	boot_log "\n\n${i} failed and exited with a return value of ${error_value}."
	191	boot_mesg_flush
	192	boot_mesg -n "FAILURE:\n\nYou should not be reading this error message.\n\n" ${FAILURE}
	193	boot_mesg -n " It means that an unforeseen error took"
	194	boot_mesg -n " place in ${i}, which exited with a return value of"
	195	boot_mesg " ${error_value}.\n"
	196	boot_mesg_flush
	197	boot_mesg -n "If you're able to track this"
	198	boot_mesg -n " error down to a bug in one of the files provided by"
	199	boot_mesg -n " the LFS book, please be so kind to inform us at"
	200	boot_mesg " lfs-dev@linuxfromscratch.org.\n"
	201	boot_mesg_flush
[6c32364]	202	if [ "$INTERACTIVE" ]; then
	203	boot_mesg -n "Press Enter to continue..." ${INFO}
	204	boot_mesg "" ${NORMAL}
	205	if [ "$LCD_PROG" ]; then
	206	sleep 10
	207	else
	208	read ENTER
	209	fi
[c6e88663]	210	fi
[163a6701]	211	}
	212
	213	check_script_status()
	214	{
	215	# $i is inherited by the rc script
	216	if [ ! -f ${i} ]; then
	217	boot_mesg "${i} is not a valid symlink." ${WARNING}
	218	echo_warning
	219	continue
	220	fi
	221
	222	if [ ! -x ${i} ]; then
	223	boot_mesg "${i} is not executable, skipping." ${WARNING}
	224	echo_warning
	225	continue
	226	fi
	227	}
	228
	229	evaluate_retval()
	230	{
	231	error_value="${?}"
	232
	233	if [ ${error_value} = 0 ]; then
	234	echo_ok
	235	else
	236	echo_failure
	237	fi
	238
	239	# This prevents the 'An Unexpected Error Has Occurred' from trivial
	240	# errors.
	241	return 0
	242	}
	243
	244	print_status()
	245	{
	246	if [ "${#}" = "0" ]; then
	247	echo "Usage: ${0} {success\|warning\|failure}"
	248	return 1
	249	fi
	250
	251	# boot_mesg_flush
	252	# echo_warning
	253
	254	case "${1}" in
	255
	256	success)
	257	echo_ok
	258	;;
	259
	260	warning)
	261	# Leave this extra case in because old scripts
	262	# may call it this way.
	263	case "${2}" in
	264	running)
	265	echo -e -n "${CURS_UP}"
	266	echo -e -n "\\033[${STRING_LENGTH}G "
	267	boot_mesg "Already running." ${WARNING}
	268	echo_warning
	269	;;
	270	not_running)
	271	echo -e -n "${CURS_UP}"
	272	echo -e -n "\\033[${STRING_LENGTH}G "
	273	boot_mesg "Not running." ${WARNING}
	274	echo_warning
	275	;;
	276	not_available)
	277	echo -e -n "${CURS_UP}"
	278	echo -e -n "\\033[${STRING_LENGTH}G "
	279	boot_mesg "Not available." ${WARNING}
	280	echo_warning
	281	;;
	282	*)
	283	# This is how it is supposed to
	284	# be called
	285	echo_warning
	286	;;
	287	esac
	288	;;
	289
	290	failure)
	291	echo_failure
	292	;;
	293
	294	esac
	295
	296	}
	297
	298	reloadproc()
	299	{
	300	if [ "${#}" = "0" ]; then
	301	echo "Usage: reloadproc [{program}]"
	302	exit 1
	303	fi
	304
	305	getpids "${1}"
	306
	307	if [ -n "${pidlist}" ]; then
	308	failure="0"
	309	for pid in ${pidlist}
	310	do
	311	kill -"${RELOADSIG}" "${pid}" \|\| failure="1"
	312	done
	313
	314	(exit ${failure})
	315	evaluate_retval
	316
	317	else
	318	boot_mesg "Process ${1} not running." ${WARNING}
	319	echo_warning
	320	fi
	321	}
	322
	323	statusproc()
	324	{
	325	if [ "${#}" = "0" ]
	326	then
	327	echo "Usage: statusproc {program}"
	328	exit 1
	329	fi
	330
	331	getpids "${1}"
	332
	333	if [ -n "${pidlist}" ]; then
	334	echo -e "${INFO}${base} is running with Process"\
	335	"ID(s) ${pidlist}.${NORMAL}"
	336	else
	337	if [ -n "${base}" -a -e "/var/run/${base}.pid" ]; then
	338	echo -e "${WARNING}${1} is not running but"\
	339	"/var/run/${base}.pid exists.${NORMAL}"
	340	else
	341	if [ -n "${PIDFILE}" -a -e "${PIDFILE}" ]; then
	342	echo -e "${WARNING}${1} is not running"\
	343	"but ${PIDFILE} exists.${NORMAL}"
	344	else
	345	echo -e "${INFO}${1} is not running.${NORMAL}"
	346	fi
	347	fi
	348	fi
	349	}
	350
	351	# The below functions are documented in the LSB-generic 2.1.0
	352
	353	#*******************************************************************************
	354	# Function - pidofproc [-s] [-p pidfile] pathname
	355	#
	356	# Purpose: This function returns one or more pid(s) for a particular daemon
	357	#
	358	# Inputs: -p pidfile, use the specified pidfile instead of pidof
	359	# pathname, path to the specified program
	360	#
	361	# Outputs: return 0 - Success, pid's in stdout
	362	# return 1 - Program is dead, pidfile exists
	363	# return 2 - Invalid or excessive number of arguments,
	364	# warning in stdout
	365	# return 3 - Program is not running
	366	#
	367	# Dependencies: pidof, echo, head
	368	#
	369	# Todo: Remove dependency on head
	370	# This depreciates getpids
	371	# Test changes to pidof
	372	#
	373	#*******************************************************************************
	374	pidofproc()
	375	{
	376	local pidfile=""
	377	local lpids=""
	378	local silent=""
	379	pidlist=""
	380	while true
	381	do
	382	case "${1}" in
	383	-p)
	384	pidfile="${2}"
	385	shift 2
	386	;;
	387
	388	-s)
	389	# Added for legacy opperation of getpids
	390	# eliminates several '> /dev/null'
	391	silent="1"
	392	shift 1
	393	;;
	394	-*)
	395	log_failure_msg "Unknown Option: ${1}"
	396	return 2
	397	;;
	398	*)
	399	break
	400	;;
	401	esac
	402	done
	403
	404	if [ "${#}" != "1" ]; then
	405	shift 1
	406	log_failure_msg "Usage: pidofproc [-s] [-p pidfile] pathname"
	407	return 2
	408	fi
	409
	410	if [ -n "${pidfile}" ]; then
	411	if [ ! -r "${pidfile}" ]; then
	412	return 3 # Program is not running
	413	fi
	414
	415	lpids=`head -n 1 ${pidfile}`
	416	for pid in ${lpids}
	417	do
	418	if [ "${pid}" -ne "$$" -a "${pid}" -ne "${PPID}" ]; then
	419	kill -0 "${pid}" > /dev/null &&
	420	pidlist="${pidlist} ${pid}"
	421	fi
	422
	423	if [ "${silent}" -ne "1" ]; then
	424	echo "${pidlist}"
	425	fi
	426
	427	test -z "${pidlist}" &&
	428	# Program is dead, pidfile exists
	429	return 1
	430	# else
	431	return 0
	432	done
	433
	434	else
	435	pidlist=`pidof -o $$ -o $PPID -x "$1"`
	436	if [ "x${silent}" != "x1" ]; then
	437	echo "${pidlist}"
	438	fi
	439
	440	# Get provide correct running status
	441	if [ -n "${pidlist}" ]; then
	442	return 0
	443	else
	444	return 3
	445	fi
	446
	447	fi
	448
	449	if [ "$?" != "0" ]; then
	450	return 3 # Program is not running
	451	fi
	452	}
	453
	454	# This will ensure compatibility with previous LFS Bootscripts
	455	getpids()
	456	{
	457	if [ -z "${PIDFILE}" ]; then
	458	pidofproc -s -p "${PIDFILE}" $@
	459	else
	460	pidofproc -s $@
	461	fi
	462	base="${1##*/}"
	463	}
	464
	465	#*******************************************************************************
	466	# Function - loadproc [-f] [-n nicelevel] [-p pidfile] pathname [args]
	467	#
	468	# Purpose: This runs the specified program as a daemon
	469	#
	470	# Inputs: -f, run the program even if it is already running
	471	# -n nicelevel, specifies a nice level. See nice(1).
	472	# -p pidfile, uses the specified pidfile
	473	# pathname, pathname to the specified program
	474	# args, arguments to pass to specified program
	475	#
	476	# Outputs: return 0 - Success
	477	# return 2 - Invalid of excessive number of arguments,
	478	# warning in stdout
	479	# return 4 - Program or service status is unknown
	480	#
	481	# Dependencies: nice
	482	#
	483	# Todo: LSB says this should be called start_daemon
	484	# LSB does not say that it should call evaluate_retval
	485	# It checks for PIDFILE, which is deprecated.
	486	# Will be removed after BLFS 6.0
	487	# loadproc returns 0 if program is already running, not LSB compliant
	488	#
	489	#*******************************************************************************
	490	loadproc()
	491	{
	492	local pidfile=""
	493	local forcestart=""
	494	local nicelevel="10"
	495
	496	# This will ensure compatibility with previous LFS Bootscripts
	497	if [ -n "${PIDFILE}" ]; then
	498	pidfile="${PIDFILE}"
	499	fi
	500
	501	while true
	502	do
	503	case "${1}" in
	504	-f)
	505	forcestart="1"
	506	shift 1
	507	;;
	508	-n)
	509	nicelevel="${2}"
	510	shift 2
	511	;;
	512	-p)
	513	pidfile="${2}"
	514	shift 2
	515	;;
	516	-*)
	517	log_failure_msg "Unknown Option: ${1}"
	518	return 2 #invalid or excess argument(s)
	519	;;
	520	*)
	521	break
	522	;;
	523	esac
	524	done
	525
	526	if [ "${#}" = "0" ]; then
	527	log_failure_msg "Usage: loadproc [-f] [-n nicelevel] [-p pidfile] pathname [args]"
	528	return 2 #invalid or excess argument(s)
	529	fi
	530
	531	if [ -z "${forcestart}" ]; then
	532	if [ -z "${pidfile}" ]; then
	533	pidofproc -s "${1}"
	534	else
	535	pidofproc -s -p "${pidfile}" "${1}"
	536	fi
	537
	538	case "${?}" in
	539	0)
	540	log_warning_msg "Unable to continue: ${1} is running"
	541	return 0 # 4
	542	;;
	543	1)
	544	log_warning_msg "Unable to continue: ${pidfile} exists"
	545	return 0 # 4
	546	;;
	547	3)
	548	;;
	549	*)
	550	log_failure_msg "Unknown error code from pidofproc: ${?}"
	551	return 4
	552	;;
	553	esac
	554	fi
	555
	556	nice -n "${nicelevel}" "${@}"
	557	evaluate_retval # This is "Probably" not LSB compliant, but required to be compatible with older bootscripts
	558	return 0
	559	}
	560
	561	#*******************************************************************************
	562	# Function - killproc [-p pidfile] pathname [signal]
	563	#
	564	# Purpose:
	565	#
	566	# Inputs: -p pidfile, uses the specified pidfile
	567	# pathname, pathname to the specified program
	568	# signal, send this signal to pathname
	569	#
	570	# Outputs: return 0 - Success
	571	# return 2 - Invalid of excessive number of arguments,
	572	# warning in stdout
	573	# return 4 - Unknown Status
	574	#
	575	# Dependencies: kill
	576	#
	577	# Todo: LSB does not say that it should call evaluate_retval
	578	# It checks for PIDFILE, which is deprecated.
	579	# Will be removed after BLFS 6.0
	580	#
	581	#*******************************************************************************
	582	killproc()
	583	{
	584	local pidfile=""
	585	local killsig=""
	586	pidlist=""
	587
	588	# This will ensure compatibility with previous LFS Bootscripts
	589	if [ -n "${PIDFILE}" ]; then
	590	pidfile="${PIDFILE}"
	591	fi
	592
	593	while true
	594	do
	595	case "${1}" in
	596	-p)
	597	pidfile="${2}"
	598	shift 2
	599	;;
	600	-*)
	601	log_failure_msg "Unknown Option: ${1}"
	602	return 2
	603	;;
	604	*)
	605	break
	606	;;
	607	esac
	608	done
	609
	610	if [ "${#}" = "2" ]; then
	611	killsig="${2}"
	612	elif [ "${#}" != "1" ]; then
	613	shift 2
	614	log_failure_msg "Usage: killproc [-p pidfile] pathname [signal]"
	615	return 2
	616	fi
	617
	618	if [ -z "${pidfile}" ]; then
	619	pidofproc -s "${1}"
	620	else
	621	pidofproc -s -p "${pidfile}" "${1}"
	622	fi
	623
	624	# Change....
	625	if [ -n "${pidlist}" ]; then
	626	for pid in ${pidlist}
	627	do
	628	kill -${killsig:-TERM} ${pid} 2>/dev/null
	629	if [ -z "${killsig}" ]; then
	630	# Wait up to 3 seconds, for ${pid} to terminate
	631	local dtime=${KILLDELAY}
	632	while [ "${dtime}" != "0" ]
	633	do
	634	kill -0 ${pid} 2>/dev/null \|\| break
	635	sleep 1
	636	dtime=$(( ${dtime} - 1))
	637	done
	638	# If ${pid} is still running, kill it
	639	kill -0 ${pid} 2>/dev/null && kill -KILL ${pid} 2>/dev/null
	640	fi
	641	done
	642
	643	if [ -z "${killsig}" ]; then
	644	pidofproc -s "${1}"
	645
	646	# Program was terminated
	647	if [ "$?" != "0" ]; then
	648	# Pidfile Exists
	649	if [ -f "${pidfile}" ]; then
	650	rm -f "${pidfile}"
	651	fi
	652	echo_ok
	653	return 0
	654	else # Program is still running
	655	echo_failure
	656	return 4 # Unknown Status
	657	fi
	658	else
	659	if [ -z "${pidfile}" ]; then
	660	pidofproc -s "${1}"
	661	else
	662	pidofproc -s -p "${pidfile}" "${1}"
	663	fi
	664	fi
	665
	666	evaluate_retval # This is "Probably" not LSB compliant, but required to be compatible with older bootscripts
	667
	668	else
	669	print_status warning not_running
	670	fi
	671	}
	672
	673
	674	#*******************************************************************************
	675	# Function - log_success_msg "message"
	676	#
	677	# Purpose: Print a success message
	678	#
	679	# Inputs: $@ - Message
	680	#
	681	# Outputs: Text output to screen
	682	#
	683	# Dependencies: echo
	684	#
	685	# Todo: logging
	686	#
	687	#*******************************************************************************
	688	log_success_msg()
	689	{
	690	echo -n -e "${BOOTMESG_PREFIX}${@}"
	691	echo -e "${SET_COL}""${BRACKET}""[""${SUCCESS}"" OK ""${BRACKET}""]""${NORMAL}"
	692	return 0
	693	}
	694
	695	#*******************************************************************************
	696	# Function - log_failure_msg "message"
	697	#
	698	# Purpose: Print a failure message
	699	#
	700	# Inputs: $@ - Message
	701	#
	702	# Outputs: Text output to screen
	703	#
	704	# Dependencies: echo
	705	#
	706	# Todo: logging
	707	#
	708	#*******************************************************************************
	709	log_failure_msg() {
	710	echo -n -e "${BOOTMESG_PREFIX}${@}"
	711	echo -e "${SET_COL}""${BRACKET}""[""${FAILURE}"" FAIL ""${BRACKET}""]""${NORMAL}"
	712	return 0
	713	}
	714
	715	#*******************************************************************************
	716	# Function - log_warning_msg "message"
	717	#
	718	# Purpose: print a warning message
	719	#
	720	# Inputs: $@ - Message
	721	#
	722	# Outputs: Text output to screen
	723	#
	724	# Dependencies: echo
	725	#
	726	# Todo: logging
	727	#
	728	#*******************************************************************************
	729	log_warning_msg() {
	730	echo -n -e "${BOOTMESG_PREFIX}${@}"
	731	echo -e "${SET_COL}""${BRACKET}""[""${WARNING}"" WARN ""${BRACKET}""]""${NORMAL}"
	732	return 0
	733	}
	734
	735	# End $rc_base/init.d/functions

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