+ D.1. /etc/rc.d/init.d/rc +

+ Скрипт rc это первый скрипт, + вызываемый системой инициализации init и инициирующий процесс загрузки. +
#!/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
+
+ Линукс с нуля - Версия 12.2 +

+ Приложение D. Скрипты загрузки и настройки системы-20240825 +

+ D.1. /etc/rc.d/init.d/rc +
