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authorSn4il <sn4il@thedroth.rocks>2024-09-02 15:54:35 +0300
committerSn4il <sn4il@thedroth.rocks>2024-09-02 15:54:35 +0300
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parent200d528e55ca954d37769f4d143f10c9519b00e7 (diff)
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LFS 12.2
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+<!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-12.2">
+ <div class="navheader">
+ <h4>
+ Линукс с нуля - Версия 12.2
+ </h4>
+ <h3>
+ Приложение D. Скрипты загрузки и настройки системы-20240825
+ </h3>
+ <ul>
+ <li class="prev">
+ <a accesskey="p" href="scripts.html" title=
+ "Скрипты загрузки и настройки системы-20240825">Пред.</a>
+ <p>
+ Скрипты загрузки и настройки системы-20240825
+ </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-20240825">Наверх</a>
+ </li>
+ <li class="home">
+ <a accesskey="h" href="../index.html" title=
+ "Линукс с нуля - Версия 12.2">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 $ret
+}
+
+# Read any local settings/overrides
+[ -r /etc/sysconfig/rc.site ] &amp;&amp; source /etc/sysconfig/rc.site
+
+DISTRO=${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}" != "" ] &amp;&amp; runlevel=${1}
+
+if [ "${runlevel}" == "" ]; then
+ echo "Usage: ${0} &lt;runlevel&gt;" &gt;&amp;2
+ exit 1
+fi
+
+previous=${PREVLEVEL}
+[ "${previous}" == "" ] &amp;&amp; previous=N
+
+if [ ! -d /etc/rc.d/rc${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 ] &amp;&amp; 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&gt;&amp;1 &gt; /dev/null
+fi
+
+# Make lower case
+[ "${interactive}" == "I" ] &amp;&amp; interactive="i"
+[ "${interactive}" != "i" ] &amp;&amp; interactive=""
+
+# Read the state file if it exists from runlevel S
+[ -r /run/interactive ] &amp;&amp; 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&gt; /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 ] &amp;&amp; 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&gt; /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]$suffix ] &amp;&amp; continue
+ fi
+
+ check_script_status
+ if [ "${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 "${interactive}" == "i" ]; then
+ echo "interactive=\"i\"" &gt; /run/interactive
+else
+ rm -f /run/interactive 2&gt; /dev/null
+fi
+
+# Copy the boot log on initial boot only
+if [ "${previous}" == "N" -a "${runlevel}" != "S" ]; then
+ cat $BOOTLOG &gt;&gt; /var/log/boot.log
+
+ # Mark the end of boot
+ echo "--------" &gt;&gt; /var/log/boot.log
+
+ # Remove the temporary file
+ rm -f $BOOTLOG 2&gt; /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-20240825">Пред.</a>
+ <p>
+ Скрипты загрузки и настройки системы-20240825
+ </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-20240825">Наверх</a>
+ </li>
+ <li class="home">
+ <a accesskey="h" href="../index.html" title=
+ "Линукс с нуля - Версия 12.2">Начало</a>
+ </li>
+ </ul>
+ </div>
+ </body>
+</html>
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