Øàáëîí ñêðèïòîâ èíèöèàëèçàöèè init.d

[ocoka13]

à ÷òî inittab îòñóòñòâóåò ?
Oleg à ÷òî ïðîèñõîäèò ïîñëå çàïóñêà /sbin/init ?

[Oleg]

Íåò inittab, ïîñêîëüêó init çäåñü íå ïðîñòîé, à çîëîòîé. Ò.å. íàïèñàí ñïåöèàëüíî äëÿ ðîóòåðà è äåëàåò, ÷òî åìó íóæíî.

[Shajtan]

Îáüÿñíèòå, ïëèç, êàêàÿ åïè÷åñêàÿ ñèëà òîëêàåò (äîëæíà òîëêàòü, ïîòîìó êàê ó ìåíÿ ñåãî íå ïðîèñõîäèò) ñòàðòîâûå ñêðèïòû èç /opt/etc/init.d ?
Òóïëþ è ïîíÿòü íå èìåþ ðàçóìåíèÿ...

[Mam(O)n]

Ðàíüøå, êàê ÿ ïîìíþ, â ñòàðîì ðåïîçèòîðèè ïðè óñòàíîâêè ipkg ñòàâèëñÿ ñêðèïò /opt/etc/rc.unslung, êîòîðûé òîëêàë ñêðèïòû èç ïàïêè /opt/etc/init.d, íà÷èíàþùèåñÿ íà S ïëþñ äâå öèôðû (äëÿ ïðèîðèòåòà). Íî ñîîòâåòñòâåííî åãî íóæíî áûëî òàêæå ïðîïèñûâàòü â ïîñò-ìàóíò. Òåïåðü æå ñ íîâûì ipkg-opt ýòîò ñêðèïò íå ñòàâèòñÿ.

Âîò ñîäåðæèìîå òîãî ñàìîãî ñêðèïòà.

for i in /opt/etc/init.d/S??* ;do

# Ignore dangling symlinks (if any).
[ ! -f "$i" ] && continue

case "$i" in
*.sh)
# Source shell script for speed.
(
trap - INT QUIT TSTP
set start
. $i
)
;;
*)
# No sh extension, so fork subprocess.
$i start
;;
esac

done

[Mirage-net]

S ïëþñ äâå öèôðû (äëÿ ïðèîðèòåòà)

Íå ïðèîðèòåòà, à î÷åðåäíîñòè çàïóñêà ...

[Mam(O)n]

Äà, êîíå÷íî æå ÿ èìåë ââèäó ïðèîðèòåò çàïóñêà.

[djet]

Ñ óñòàíîâêîé áîëüøîãî êîëè÷åñòâà ñåðâèñîâ ïîÿâèëàñü ïðîáëåìà óïðàâëåíèÿ èõ çàïóñêîì è ìîíèòîðèíãà ñîñòîÿíèÿ. Ê ñîæàëåíèþ, ñèñòåìà ñêðèïòîâ ÏÎ èç optware íå îòëè÷àåòñÿ ïîñëåäîâàòåëüíîñòüþ è ïîëíîòîé ðåàëèçàöèè (õîòÿ ó íåêîòîðûõ ïàêåòîâ, áåçóñëîâíî, âñòðå÷àþòñÿ ïîëíîöåííûå ðåøåíèÿ), ïîýòîìó ïðèøëîñü äîðàáàòûâàòü å¸ ñàìîìó. Âîò ÷òî ïîêà ïîëó÷èëîñü.

rc.unslung:

#!/bin/sh

# Start/stop all init scripts in /opt/etc/init.d including symlinks
# starting them in numerical order and
# stopping them in reverse numerical order

#logger "Started $0${*:+ $*}."

ACTION=$1
CALLER=$2

if [ $# -lt 1 ]; then
    printf "Usage: $0 {start|stop|restart|reconfigure|check|kill}\n" >&2
    exit 1
fi

[ $ACTION = stop -o $ACTION = restart -o $ACTION = kill ] && ORDER="-r"

for i in $(/opt/bin/find /opt/etc/init.d/ -perm '-u+x' -name 'S*' | sort $ORDER ) ;
do
    case "$i" in
        S* | *.sh )
            # Source shell script for speed.
            trap "" INT QUIT TSTP EXIT
            #set $1
            #echo "trying $i" >> /tmp/rc.log
            . $i $ACTION $CALLER
            ;;
        *)
            # No sh extension, so fork subprocess.
            $i $ACTION $CALLER
            ;;
    esac
done 

rc.func:

#!/bin/sh

ACTION=$1
CALLER=$2


ansi_red="\033[1;31m";
ansi_white="\033[1;37m";
ansi_green="\033[1;32m";
ansi_yellow="\033[1;33m";
ansi_blue="\033[1;34m";
ansi_bell="\007";
ansi_blink="\033[5m";
ansi_std="\033[m";
ansi_rev="\033[7m";
ansi_ul="\033[4m";


start() {
    [ "$CRITICAL" != "yes" -a "$CALLER" = "cron" ] && return 7
        [ "$ENABLED" != "yes" ] && return 8
    echo -e -n "Starting $DESC... "
    if [ -n "`pidof $PROC`" ]; then
        echo -e "            $ansi_yellow already running. $ansi_white"
        return 0
    fi
    $PRECMD > /dev/null 2>&1 
    $PREARGS $PROC $ARGS > /dev/null 2>&1 &
    #echo $PREARGS $PROC $ARGS
    COUNTER=0
    LIMIT=10
    while [ -z "`pidof $PROC`" -a "$COUNTER" -le "$LIMIT" ]; do
        sleep 1s; 
        COUNTER=`expr $COUNTER + 1`
    done
    $POSTCMD > /dev/null 2>&1 

    if [ -z "`pidof $PROC`" ]; then
        echo -e "            $ansi_red failed. $ansi_white"
        logger "Failed to start $DESC from $CALLER."
        return 255
    else
        echo -e "            $ansi_green done. $ansi_white"
        logger "Started $DESC from $CALLER."
        return 0
    fi

}

stop() {
    case "$ACTION" in
        stop | restart)
            echo -e -n "Shutting down $PROC... "
            killall $PROC 2>/dev/null
            COUNTER=0
            LIMIT=10
            while [ -n "`pidof $PROC`" -a "$COUNTER" -le "$LIMIT" ]; do
                sleep 1s; 
                COUNTER=`expr $COUNTER + 1`
            done
            ;;
        kill)
            echo -e -n "Killing $PROC... "
            killall -9 $PROC 2>/dev/null
            ;;
    esac
    

    if [ -n "`pidof $PROC`" ]; then
        echo -e "            $ansi_red failed. $ansi_white"
        return 255
    else
        echo -e "            $ansi_green done. $ansi_white"
        return 0
    fi
}

check() {
    echo -e -n "Checking $DESC... "
    if [ -n "`pidof $PROC`" ]; then
        echo -e "            $ansi_green alive. $ansi_white";
        return 0
    else 
        echo -e "            $ansi_red dead. $ansi_white";
        return 1
    fi

}

reconfigure() {
    SIGNAL=SIGHUP
    echo -e "Sending $SIGNAL to $PROC... "
    killall -$SIGNAL $PROC 2>/dev/null
}


for PROC in $PROCS; do
    case $ACTION in
        start)
            start
            ;;
        stop | kill )
            check && stop
            ;;
        restart)
            check > /dev/null && stop
            start
            ;;
        check)
            check
            ;;
        reconfigure)
            reconfigure
            ;;
        *)
            echo -e "Usage: $0 (start|stop|restart|check|kill|reconfigure)"
            exit 1
            ;;
    esac
done

#logger "Leaving ${0##*/}." 

S* (íà ïðèìåðå asterisk):

#!/bin/sh

ENABLED=yes
PROCS=asterisk
ARGS="-pFvvv"
PREARGS="nice -n -20"
DESC=$PROCS
PATH=/opt/sbin:/opt/bin:/opt/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

. /opt/etc/init.d/rc.func 

Êðàòêàÿ ñïðàâêà, î òîì, êàê ýòî ðàáîòàåò è î ñïîñîáàõ ïðèìåíåíèÿ.

rc.unslung - îñíîâíîé óïðàâëÿþùèé ñêðèïò, çàïóñêàþùèé îñòàëüíûå ñêðèïòû ñ óêàçàííûì ïàðàìåòðîì. Ïðîâåðÿåò àòðèáóò èñïîëíåíèÿ, äëÿ îòêëþ÷åíèÿ ñêðèïòà äîñòàòî÷íî ñäåëàòü åìó chmod -x.

Ïðèìåíåíèå:

• èíèöèàëèçàöèÿ ñåðâèñîâ ïîñëå çàãðóçêè (ïðåäïî÷òèòåëåí çàïóñê èç post-mount)
• êîððåêòíîå çàâåðøåíèå äî ïåðåçàãðóçêè (pre-shutdown)
• ìîíèòîðèíã çàïóùåííûõ ñåðâèñîâ ïî ðàñïèñàíèþ cron'a (ïîäîéä¸ò ïàðàìåòð start)
• ðåêîíôèãóðàöèÿ âûáðàííûõ ñëóæá ïðè èçìåíåíèè ñåòåâûõ íàñòðîåê (post-firewall) (ïîêà íèêàê íå ðåàëèçîâàíî)
• çàïóñê ïî çàïðîñó

rc.func - ñêðèïò-ìîäóëü, ñîäåðæàùèé îñíîâíûå ôóíêöèè. Âûçûâàåòñÿ èç S*.

Îñíîâíûå ïàðàìåòðû:

• start - çàïóñê, ïåðåä ýòèì îñóùåñòâëÿåòñÿ ïðîâåðêà íà íàëè÷èå óæå çàïóùåííîãî ïðîöåññà
• stop - îñòàíîâ
• restart - ïåðåçàãðóçêà ñåðâèñà. òî æå ñàìîå, ÷òî stop + start
• check - ïðîâåðêà íà çàïóùåííîñòü

S* - ñêðèïòû íàñòðîåê ñåðâèñîâ.

Ñîäåðæàò ïåðåìåííûå:

• ENABLED - ôëàã-âûêëþ÷àòåëü
• PROC - èìÿ èñïîëíÿåìîãî ôàéëà äëÿ çàïóñêà, îíî æå èñïîëüçóåòñÿ äëÿ ïðîâåðîê ñîñòîÿíèÿ è äëÿ çàâåðøåíèÿ
• ARGS - àðãóìåíòû ïðîöåññà
• PREARGS - ïðåôèêñ â êîìàíäíîé ñòðîêå çàïóñêà. Íàïðèìåð, èì ìîæåò áûòü nice èëè sudo ñ ïàðàìåòðàìè.
• PRECMD è POSTCMD - êîìàíäû, âûïîëíÿùèåñÿ äî è ïîñëå çàïóñêà îñíîâíîãî ïðîöåññà. PRECMD âûçûâàåòñÿ ìîäàëüíî.
• DESC - îïèñàíèå
• PATH - íàèáîëåå ïîëíûé ñïèñîê ïóòåé
• CRITICAL - ôëàã îáðàáîòêè ïðè çàïóñêå èç cron'a

Òàêîé âîò ÷åðíîâèê ïîëó÷èëñÿ. Ìîæåò, êîìó ïðèãîäèòñÿ èëè îáùèìè ñèëàìè äîïèøåì íå÷òî âñåîáúåìëþùåå.

*äëÿ çàïóñêà ñêðèïòîâ òðåáóþòñÿ findutils. Ïîäðàçóìåâàþ, ÷òî îíè ó âñåõ åñòü, êàê íà ëþáîì ïîðÿäî÷íîì ëèíóêñå.

[angel_il]

ó ìåíÿ âî âñåõ ñêðèïòàõ åñòü åùå è info

[al37919]

à bash çà÷åì?

[djet]

à bash çà÷åì?

Ëó÷øàÿ ñîâìåñòèìîñòü ñ ìîèì êîäîì. À âñòðîåííûé øåëë source óìååò? ß òîëüêî ÷òî âûíåñ âñå ôóíêöèè â îòäåëüíûé ôàéë, â áîëüøèíñòâå S* òîëüêî øàïêè îñòàëèñü.


+ äîáàâèë ñîðòèðîâêó ïîðÿäêà çàïóñêà ñåðâèñîâ â çàâèñèìîñòè îò çàäà÷è. Íóæíû findutils.
+ äîáàâèë ïðèìèòèâíóþ ïðîâåðêó (check)

[al37919]

Ëó÷øàÿ ñîâìåñòèìîñòü ñ ìîèì êîäîì.

ñîìíåâàþñü

À âñòðîåííûé øåëë source óìååò?

óìååò. Êñòàòè:

. $i $1 

ýòî òîò æå source.

Âñòðîåííûé /bin/sh íå óìååò ðàçâå ÷òî ìàññèâû, íî ó Âàñ èõ âñå ðàâíî íåò.

Ñìûñë óíèâåðñàëèçàöèè ñ âûíåñåíèåì ôóíêöèé íàðóæó ñîìíèòåëåí, ò.ê. ó äåìîíîâ ìîãóò áûòü ñâîè ïîòðåáíîñòè: íàïðèìåð ñàìáà çàïóñêàåò 2 ñåðâèñà, à amuled äîëæåí ïðèáèâàòü åùå è amuleweb

Ñòàíäàðòèçàöèÿ íóæíà íà óðîâíå ñïîñîáîâ çàïóñêà --- à îíè è òàê ñòàíäàðòíûå.

[djet]

ñîìíåâàþñü

óìååò. Êñòàòè:

. $i $1 

ýòî òîò æå source.

Âñòðîåííûé /bin/sh íå óìååò ðàçâå ÷òî ìàññèâû, íî ó Âàñ èõ âñå ðàâíî íåò.

Ñìûñë óíèâåðñàëèçàöèè ñ âûíåñåíèåì ôóíêöèé íàðóæó ñîìíèòåëåí, ò.ê. ó äåìîíîâ ìîãóò áûòü ñâîè ïîòðåáíîñòè: íàïðèìåð ñàìáà çàïóñêàåò 2 ñåðâèñà, à amuled äîëæåí ïðèáèâàòü åùå è amuleweb

Ñòàíäàðòèçàöèÿ íóæíà íà óðîâíå ñïîñîáîâ çàïóñêà --- à îíè è òàê ñòàíäàðòíûå.

Ìîæíî è òàê. Ïðîñòî äîêóìåíòàöèè ïî âñòðîåííîìó sh ÿ íå íàø¸ë (ïîäîçðåâàþ, ÷òî êàê è âåñü busybox, ýòî íå÷òî î÷åíü íåñòàíäàðòíîå è óðåçàííîå), à ïî bash - â èçîáèëèè. Åñëè ìíå ïîíàäîáèòñÿ ÷òî-ëèáî ðåàëèçîâàòü, ïðèíèìàòü âî âíèìàíèå sh ÿ òî÷íî íå áóäó, ÿ èì äàæå íå ïîëüçóþñü.

Íàñ÷¸ò ñëóæá ñ íåñêîëüêèìè ïðîöåññàìè ÿ óæå äóìàþ, êàê ðåàëèçîâàòü. Ýòî òî÷íî íå ïðîáëåìà.

Äëÿ ñåáÿ ñìûñë â ìîäóëå ÿ âèæó â òîì, ÷òî ìíå ïðîùå îáíîâëÿòü êîä, è êîïèïàñòà ìåíüøå âûõîäèò.

Êñòàòè, íåò ëè óäîáíîãî ñïîñîáà ïåðåäàòü èìÿ ðîäèòåëüñêîãî ñêðèïòà â çàïóñêàåìûé? Íóæíî äëÿ ðàçãðàíè÷åíèÿ ìåæäó çàïóñêîì, íàïðèìåð, èç post-firewall è post-mount.

[al37919]

Ó Îëåãà sh íå óðåçàí. Ñòðîãî ãîâîðÿ ýòî ash. ß îáû÷íî ïîëüçóþ âîò ýòî îïèñàíèå:
http://www.freebsd.org/cgi/man.cgi?q...SE&format=html

Êñòàòè, íåò ëè óäîáíîãî ñïîñîáà ïåðåäàòü èìÿ ðîäèòåëüñêîãî ñêðèïòà â çàïóñêàåìûé? Íóæíî äëÿ ðàçãðàíè÷åíèÿ ìåæäó çàïóñêîì, íàïðèìåð, èç post-firewall è post-mount.

Âî ïåðâûõ åñòü $0
Âî âòîðûõ ïðè èñïîëüçîâàíèè ps èç procps
ps -AF âîçâðàùàåò â ò.÷. PPID (ò.å. parent's pid)
 òðåòüèõ, ÷òî òî â ýòîì ðîäå:

awk '/Name/{print $2}' "/proc/`awk '/PPid/{print $2}' "/proc/$$/status"`/status"

âûâåäåò íàçâàíèå òîé ïðîãè èç êîòîðîé âûçâàíî

P.S. Ýõ, êðàñèâóþ êîììàíäó ÿ íàïèñàë --- äàæå ñòèðàòü îáèäíî...
 ÷åòâåðòûõ, åñòü ïåðåìåííàÿ îêðóæåíèÿ $PPID

awk '/Name/{print $2}' "/proc/$PPID/status"

[angel_il]

íó âîîáøå äà, #!/opt/bin/bash ñðàçó íå çàìåòèë, ìîâåòîí ýòî.

[djet]

íó âîîáøå äà, #!/opt/bin/bash ñðàçó íå çàìåòèë, ìîâåòîí ýòî.

Î âêóñàõ íå ñïîðÿò, ó âàñ äðóãîé øåëë? È ñêðèïòû ó ìåíÿ âñ¸ ðàâíî íè ôèãà íå êðîññ-ïëàòôîðìåííûå.