diff options
Diffstat (limited to 'lfs-12.1-sysv/scripts/apds01.html')
| -rw-r--r-- | lfs-12.1-sysv/scripts/apds01.html | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/lfs-12.1-sysv/scripts/apds01.html b/lfs-12.1-sysv/scripts/apds01.html new file mode 100644 index 0000000..92aab74 --- /dev/null +++ b/lfs-12.1-sysv/scripts/apds01.html @@ -0,0 +1,313 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> + <head> + <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=utf-8" /> + <title> + D.1. /etc/rc.d/init.d/rc + </title> + <link rel="stylesheet" type="text/css" href="../stylesheets/lfs.css" /> + <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /> + <link rel="stylesheet" href="../stylesheets/lfs-print.css" type= + "text/css" media="print" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + </head> + <body class="lfs" id="lfs-12.1"> + <div class="navheader"> + <h4> + Линукс с нуля - Версия 12.1 + </h4> + <h3> + Приложение D. Скрипты загрузки и настройки системы-20230728 + </h3> + <ul> + <li class="prev"> + <a accesskey="p" href="scripts.html" title= + "Скрипты загрузки и настройки системы-20230728">Пред.</a> + <p> + Скрипты загрузки и настройки системы-20230728 + </p> + </li> + <li class="next"> + <a accesskey="n" href="apds02.html" title= + "/lib/lsb/init-functions">След.</a> + <p> + /lib/lsb/init-functions + </p> + </li> + <li class="up"> + <a accesskey="u" href="scripts.html" title= + "Приложение D. Скрипты загрузки и настройки системы-20230728">Наверх</a> + </li> + <li class="home"> + <a accesskey="h" href="../index.html" title= + "Линукс с нуля - Версия 12.1">Начало</a> + </li> + </ul> + </div> + <h1 class="sect1"> + <a id="rc" name="rc"></a>D.1. /etc/rc.d/init.d/rc + </h1> + <div class="wrap" lang="ru" xml:lang="ru"> + <p> + Скрипт <code class="systemitem">rc</code> это первый скрипт, + вызываемый системой инициализации <span class= + "application">init</span> и инициирующий процесс загрузки. + </p> + <pre class="screen">#!/bin/bash +######################################################################## +# Begin rc +# +# Description : Main Run Level Control Script +# +# Authors : Gerard Beekmans - gerard@linuxfromscratch.org +# : DJ Lucas - dj@linuxfromscratch.org +# Updates : Bruce Dubbs - bdubbs@linuxfromscratch.org +# : Pierre Labastie - pierre@linuxfromscratch.org +# +# Version : LFS 7.0 +# +# Notes : Updates March 24th, 2022: new semantics of S/K files +# - Instead of testing that S scripts were K scripts in the +# previous runlevel, test that they were not S scripts +# - Instead of testing that K scripts were S scripts in the +# previous runlevel, test that they were not K scripts +# - S scripts in runlevel 0 or 6 are now run with +# "script start" (was "script stop" previously). +######################################################################## + +. /lib/lsb/init-functions + +print_error_msg() +{ + log_failure_msg + # $i is set when called + MSG="FAILURE:\n\nYou should not be reading this error message.\n\n" + MSG="${MSG}It means that an unforeseen error took place in\n" + MSG="${MSG}${i},\n" + MSG="${MSG}which exited with a return value of ${error_value}.\n" + + MSG="${MSG}If you're able to track this error down to a bug in one of\n" + MSG="${MSG}the files provided by the ${DISTRO_MINI} book,\n" + MSG="${MSG}please be so kind to inform us at ${DISTRO_CONTACT}.\n" + log_failure_msg "${MSG}" + + log_info_msg "Press Enter to continue..." + wait_for_user +} + +check_script_status() +{ + # $i is set when called + if [ ! -f ${i} ]; then + log_warning_msg "${i} is not a valid symlink." + SCRIPT_STAT="1" + fi + + if [ ! -x ${i} ]; then + log_warning_msg "${i} is not executable, skipping." + SCRIPT_STAT="1" + fi +} + +run() +{ + if [ -z $interactive ]; then + ${1} ${2} + return $? + fi + + while true; do + read -p "Run ${1} ${2} (Yes/no/continue)? " -n 1 runit + echo + + case ${runit} in + c | C) + interactive="" + ${i} ${2} + ret=${?} + break; + ;; + + n | N) + return 0 + ;; + + y | Y) + ${i} ${2} + ret=${?} + break + ;; + esac + done + + return $ret +} + +# Read any local settings/overrides +[ -r /etc/sysconfig/rc.site ] && source /etc/sysconfig/rc.site + +DISTRO=${DISTRO:-"Linux From Scratch"} +DISTRO_CONTACT=${DISTRO_CONTACT:-"lfs-dev@lists.linuxfromscratch.org (Registration required)"} +DISTRO_MINI=${DISTRO_MINI:-"LFS"} +IPROMPT=${IPROMPT:-"no"} + +# These 3 signals will not cause our script to exit +trap "" INT QUIT TSTP + +[ "${1}" != "" ] && runlevel=${1} + +if [ "${runlevel}" == "" ]; then + echo "Usage: ${0} <runlevel>" >&2 + exit 1 +fi + +previous=${PREVLEVEL} +[ "${previous}" == "" ] && previous=N + +if [ ! -d /etc/rc.d/rc${runlevel}.d ]; then + log_info_msg "/etc/rc.d/rc${runlevel}.d does not exist.\n" + exit 1 +fi + +if [ "$runlevel" == "6" -o "$runlevel" == "0" ]; then IPROMPT="no"; fi + +# Note: In ${LOGLEVEL:-7}, it is ':' 'dash' '7', not minus 7 +if [ "$runlevel" == "S" ]; then + [ -r /etc/sysconfig/console ] && source /etc/sysconfig/console + dmesg -n "${LOGLEVEL:-7}" +fi + +if [ "${IPROMPT}" == "yes" -a "${runlevel}" == "S" ]; then + # The total length of the distro welcome string, without escape codes + wlen=${wlen:-$(echo "Welcome to ${DISTRO}" | wc -c )} + welcome_message=${welcome_message:-"Welcome to ${INFO}${DISTRO}${NORMAL}"} + + # The total length of the interactive string, without escape codes + ilen=${ilen:-$(echo "Press 'I' to enter interactive startup" | wc -c )} + i_message=${i_message:-"Press '${FAILURE}I${NORMAL}' to enter interactive startup"} + + + # dcol and icol are spaces before the message to center the message + # on screen. itime is the amount of wait time for the user to press a key + wcol=$(( ( ${COLUMNS} - ${wlen} ) / 2 )) + icol=$(( ( ${COLUMNS} - ${ilen} ) / 2 )) + itime=${itime:-"3"} + + echo -e "\n\n" + echo -e "\\033[${wcol}G${welcome_message}" + echo -e "\\033[${icol}G${i_message}${NORMAL}" + echo "" + read -t "${itime}" -n 1 interactive 2>&1 > /dev/null +fi + +# Make lower case +[ "${interactive}" == "I" ] && interactive="i" +[ "${interactive}" != "i" ] && interactive="" + +# Read the state file if it exists from runlevel S +[ -r /run/interactive ] && source /run/interactive + +# Stop all services marked as K, except if marked as K in the previous +# runlevel: it is the responsibility of the script to not try to kill +# a non running service +if [ "${previous}" != "N" ]; then + for i in $(ls -v /etc/rc.d/rc${runlevel}.d/K* 2> /dev/null) + do + check_script_status + if [ "${SCRIPT_STAT}" == "1" ]; then + SCRIPT_STAT="0" + continue + fi + + suffix=${i#/etc/rc.d/rc${runlevel}.d/K[0-9][0-9]} + [ -e /etc/rc.d/rc${previous}.d/K[0-9][0-9]$suffix ] && continue + + run ${i} stop + error_value=${?} + + if [ "${error_value}" != "0" ]; then print_error_msg; fi + done +fi + +if [ "${previous}" == "N" ]; then export IN_BOOT=1; fi + +if [ "$runlevel" == "6" -a -n "${FASTBOOT}" ]; then + touch /fastboot +fi + + +# Start all services marked as S in this runlevel, except if marked as +# S in the previous runlevel +# it is the responsibility of the script to not try to start an already running +# service +for i in $( ls -v /etc/rc.d/rc${runlevel}.d/S* 2> /dev/null) +do + + if [ "${previous}" != "N" ]; then + suffix=${i#/etc/rc.d/rc${runlevel}.d/S[0-9][0-9]} + [ -e /etc/rc.d/rc${previous}.d/S[0-9][0-9]$suffix ] && continue + fi + + check_script_status + if [ "${SCRIPT_STAT}" == "1" ]; then + SCRIPT_STAT="0" + continue + fi + + run ${i} start + + error_value=${?} + + if [ "${error_value}" != "0" ]; then print_error_msg; fi +done + +# Store interactive variable on switch from runlevel S and remove if not +if [ "${runlevel}" == "S" -a "${interactive}" == "i" ]; then + echo "interactive=\"i\"" > /run/interactive +else + rm -f /run/interactive 2> /dev/null +fi + +# Copy the boot log on initial boot only +if [ "${previous}" == "N" -a "${runlevel}" != "S" ]; then + cat $BOOTLOG >> /var/log/boot.log + + # Mark the end of boot + echo "--------" >> /var/log/boot.log + + # Remove the temporary file + rm -f $BOOTLOG 2> /dev/null +fi + +# End rc +</pre> + </div> + <div class="navfooter"> + <ul> + <li class="prev"> + <a accesskey="p" href="scripts.html" title= + "Скрипты загрузки и настройки системы-20230728">Пред.</a> + <p> + Скрипты загрузки и настройки системы-20230728 + </p> + </li> + <li class="next"> + <a accesskey="n" href="apds02.html" title= + "/lib/lsb/init-functions">След.</a> + <p> + /lib/lsb/init-functions + </p> + </li> + <li class="up"> + <a accesskey="u" href="scripts.html" title= + "Приложение D. Скрипты загрузки и настройки системы-20230728">Наверх</a> + </li> + <li class="home"> + <a accesskey="h" href="../index.html" title= + "Линукс с нуля - Версия 12.1">Начало</a> + </li> + </ul> + </div> + </body> +</html> |