mirror of
https://github.com/Poltern/lfs-ru.git
synced 2024-10-19 20:20:33 +03:00
228 lines
6.2 KiB
Bash
228 lines
6.2 KiB
Bash
#!/bin/bash
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########################################################################
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# Begin rc
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#
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# Description : Main Run Level Control Script
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#
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# Authors : Gerard Beekmans - gerard@linuxfromscratch.org
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# : DJ Lucas - dj@linuxfromscratch.org
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# Updates : Bruce Dubbs - bdubbs@linuxfromscratch.org
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# : Pierre Labastie - pierre@linuxfromscratch.org
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#
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# Version : LFS 7.0
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#
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# Notes : Updates March 24th, 2022: new semantics of S/K files
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# - Instead of testing that S scripts were K scripts in the
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# previous runlevel, test that they were not S scripts
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# - Instead of testing that K scripts were S scripts in the
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# previous runlevel, test that they were not K scripts
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# - S scripts in runlevel 0 or 6 are now run with
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# "script start" (was "script stop" previously).
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########################################################################
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. /lib/lsb/init-functions
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print_error_msg()
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{
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log_failure_msg
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# $i is set when called
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MSG="FAILURE:\n\nYou should not be reading this error message.\n\n"
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MSG="${MSG}It means that an unforeseen error took place in\n"
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MSG="${MSG}${i},\n"
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MSG="${MSG}which exited with a return value of ${error_value}.\n"
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MSG="${MSG}If you're able to track this error down to a bug in one of\n"
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MSG="${MSG}the files provided by the ${DISTRO_MINI} book,\n"
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MSG="${MSG}please be so kind to inform us at ${DISTRO_CONTACT}.\n"
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log_failure_msg "${MSG}"
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log_info_msg "Press Enter to continue..."
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wait_for_user
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}
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check_script_status()
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{
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# $i is set when called
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if [ ! -f ${i} ]; then
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log_warning_msg "${i} is not a valid symlink."
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SCRIPT_STAT="1"
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fi
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if [ ! -x ${i} ]; then
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log_warning_msg "${i} is not executable, skipping."
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SCRIPT_STAT="1"
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fi
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}
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run()
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{
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if [ -z $interactive ]; then
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${1} ${2}
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return $?
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fi
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while true; do
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read -p "Run ${1} ${2} (Yes/no/continue)? " -n 1 runit
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echo
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case ${runit} in
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c | C)
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interactive=""
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${i} ${2}
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ret=${?}
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break;
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;;
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n | N)
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return 0
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;;
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y | Y)
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${i} ${2}
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ret=${?}
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break
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;;
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esac
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done
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return $ret
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}
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# Read any local settings/overrides
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[ -r /etc/sysconfig/rc.site ] && source /etc/sysconfig/rc.site
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DISTRO=${DISTRO:-"Linux From Scratch"}
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DISTRO_CONTACT=${DISTRO_CONTACT:-"lfs-dev@lists.linuxfromscratch.org (Registration required)"}
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DISTRO_MINI=${DISTRO_MINI:-"LFS"}
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IPROMPT=${IPROMPT:-"no"}
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# These 3 signals will not cause our script to exit
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trap "" INT QUIT TSTP
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[ "${1}" != "" ] && runlevel=${1}
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if [ "${runlevel}" == "" ]; then
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echo "Usage: ${0} <runlevel>" >&2
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exit 1
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fi
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previous=${PREVLEVEL}
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[ "${previous}" == "" ] && previous=N
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if [ ! -d /etc/rc.d/rc${runlevel}.d ]; then
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log_info_msg "/etc/rc.d/rc${runlevel}.d does not exist.\n"
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exit 1
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fi
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if [ "$runlevel" == "6" -o "$runlevel" == "0" ]; then IPROMPT="no"; fi
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# Note: In ${LOGLEVEL:-7}, it is ':' 'dash' '7', not minus 7
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if [ "$runlevel" == "S" ]; then
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[ -r /etc/sysconfig/console ] && source /etc/sysconfig/console
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dmesg -n "${LOGLEVEL:-7}"
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fi
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if [ "${IPROMPT}" == "yes" -a "${runlevel}" == "S" ]; then
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# The total length of the distro welcome string, without escape codes
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wlen=${wlen:-$(echo "Welcome to ${DISTRO}" | wc -c )}
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welcome_message=${welcome_message:-"Welcome to ${INFO}${DISTRO}${NORMAL}"}
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# The total length of the interactive string, without escape codes
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ilen=${ilen:-$(echo "Press 'I' to enter interactive startup" | wc -c )}
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i_message=${i_message:-"Press '${FAILURE}I${NORMAL}' to enter interactive startup"}
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# dcol and icol are spaces before the message to center the message
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# on screen. itime is the amount of wait time for the user to press a key
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wcol=$(( ( ${COLUMNS} - ${wlen} ) / 2 ))
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icol=$(( ( ${COLUMNS} - ${ilen} ) / 2 ))
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itime=${itime:-"3"}
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echo -e "\n\n"
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echo -e "\\033[${wcol}G${welcome_message}"
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echo -e "\\033[${icol}G${i_message}${NORMAL}"
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echo ""
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read -t "${itime}" -n 1 interactive 2>&1 > /dev/null
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fi
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# Make lower case
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[ "${interactive}" == "I" ] && interactive="i"
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[ "${interactive}" != "i" ] && interactive=""
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# Read the state file if it exists from runlevel S
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[ -r /run/interactive ] && source /run/interactive
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# Stop all services marked as K, except if marked as K in the previous
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# runlevel: it is the responsibility of the script to not try to kill
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# a non running service
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if [ "${previous}" != "N" ]; then
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for i in $(ls -v /etc/rc.d/rc${runlevel}.d/K* 2> /dev/null)
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do
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check_script_status
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if [ "${SCRIPT_STAT}" == "1" ]; then
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SCRIPT_STAT="0"
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continue
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fi
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suffix=${i#/etc/rc.d/rc${runlevel}.d/K[0-9][0-9]}
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[ -e /etc/rc.d/rc${previous}.d/K[0-9][0-9]$suffix ] && continue
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run ${i} stop
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error_value=${?}
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if [ "${error_value}" != "0" ]; then print_error_msg; fi
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done
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fi
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if [ "${previous}" == "N" ]; then export IN_BOOT=1; fi
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if [ "$runlevel" == "6" -a -n "${FASTBOOT}" ]; then
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touch /fastboot
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fi
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# Start all services marked as S in this runlevel, except if marked as
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# S in the previous runlevel
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# it is the responsibility of the script to not try to start an already running
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# service
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for i in $( ls -v /etc/rc.d/rc${runlevel}.d/S* 2> /dev/null)
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do
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if [ "${previous}" != "N" ]; then
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suffix=${i#/etc/rc.d/rc${runlevel}.d/S[0-9][0-9]}
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[ -e /etc/rc.d/rc${previous}.d/S[0-9][0-9]$suffix ] && continue
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fi
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check_script_status
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if [ "${SCRIPT_STAT}" == "1" ]; then
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SCRIPT_STAT="0"
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continue
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fi
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run ${i} start
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error_value=${?}
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if [ "${error_value}" != "0" ]; then print_error_msg; fi
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done
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# Store interactive variable on switch from runlevel S and remove if not
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if [ "${runlevel}" == "S" -a "${interactive}" == "i" ]; then
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echo "interactive=\"i\"" > /run/interactive
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else
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rm -f /run/interactive 2> /dev/null
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fi
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# Copy the boot log on initial boot only
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if [ "${previous}" == "N" -a "${runlevel}" != "S" ]; then
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cat $BOOTLOG >> /var/log/boot.log
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# Mark the end of boot
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echo "--------" >> /var/log/boot.log
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# Remove the temporary file
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rm -f $BOOTLOG 2> /dev/null
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fi
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# End rc
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