355 lines
8.5 KiB
Bash
Executable File
355 lines
8.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# initramfs /init (busybox ash)
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#
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# color codes and some predefined texts
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BOLD="\033[1m"
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NORM="\033[0m"
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RED="\033[31m"
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GREEN="\033[32m"
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YELLOW="\033[33m"
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BLUE="\033[34m"
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OK="${BOLD}${GREEN}OK${NORM}"
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FAILED="${BOLD}${RED}FAILED${NORM}"
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DONE="${BOLD}${GREEN}DONE${NORM}"
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# helper functions
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# check an exit value and print a colored status
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checkReturn() {
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if [ $? -ne 0 ]
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then
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echo -e $FAILED
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else
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echo -e $OK
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fi
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}
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# print a colored done status
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echoDone() {
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echo -e $DONE
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}
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# search for and mount the crux media, populate a tmpfs from it,
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# and prepare /newroot for switch_root at the end of the script
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find_and_mount_media() {
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grep -q "prefix=*" /proc/cmdline
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if [ $? -eq 0 ]
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then
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for opt in `cat /proc/cmdline`
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do
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echo $opt | grep -q "prefix="
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if [ $? -eq 0 ]
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then
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PREFIX=`echo $opt | cut -d= -f2`
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fi
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done
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fi
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MEDIAMNT=/media
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mkdir -p ${MEDIAMNT}
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echo -e " ${BOLD}${BLUE}*${NORM} Searching for the CRUX media..."
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CRUXMEDIA=""
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CDROM_DEVICES="`awk '/drive name:/ { for (i=3;i<=NF;i++) { printf("%s ", $i) } }' /proc/sys/dev/cdrom/info`"
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BLOCK_DEVICES="`grep -E '[shv]d' /proc/partitions | awk '{ print $4 }'`"
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for DEV in $CDROM_DEVICES $BLOCK_DEVICES
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do
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DEV="/dev/$DEV"
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mount -r $DEV ${MEDIAMNT} 2> /dev/null
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if [ $? -eq 0 ]
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then
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echo -e -n " ${BOLD}${GREEN}*${NORM} Found media on $DEV"
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if [ -e ${MEDIAMNT}/${PREFIX}/crux-media ]
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then
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echo ", CRUX media."
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CRUXMEDIA=$DEV
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break
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else
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echo ", but it's not the CRUX media."
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umount ${MEDIAMNT}
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fi
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else
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echo -e " ${BOLD}${YELLOW}*${NORM} No media found on $DEV."
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fi
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done
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# check if the media was mounted properly. if not, spawn a shell
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if [ ! -e ${MEDIAMNT}/${PREFIX}/crux-media ]
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then
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echo -e " ${BOLD}${RED}*${NORM} The CRUX media was not properly mounted!"
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echo " Spawning a shell for you to attempt to fix this problem. If"
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echo " you are able to find the correct device, mount it at"
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echo " ${MEDIAMNT} and then log out of this shell to continue."
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echo " If you are NOT able to fix the problem, installation will"
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echo " not be possible."
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echo
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/bin/sh
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fi
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# check again and stop if it's still not there
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if [ ! -e ${MEDIAMNT}/${PREFIX}/crux-media ]
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then
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echo -e " ${BOLD}${RED}*${NORM} The CRUX media still appears not to be"
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echo " found and installation will not continue."
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echo
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sleep 99999
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exit 1
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fi
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echo -e " ${BOLD}${BLUE}*${NORM} Populating root filesystem..."
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mkdir -p /newroot
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echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting new root filesystem... "
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mount -t tmpfs tmpfs /newroot -o size=1052m
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checkReturn
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echo -e -n " ${BOLD}${BLUE}*${NORM} Copying files from rootfs.tar.xz... "
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tar -xJf ${MEDIAMNT}/${PREFIX}/rootfs.tar.xz -C /newroot
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checkReturn
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echo -e -n " ${BOLD}${BLUE}*${NORM} Copying devices from rootfs... "
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cp -af /dev/* /newroot/dev/
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checkReturn
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mkdir -p /newroot/dev/pts /newroot/media
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# the media gets unmounted here and remounted after switch_root
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umount ${MEDIAMNT}
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rmdir ${MEDIAMNT}
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sed -i -e "s,#CRUXMEDIA#,${CRUXMEDIA}," /newroot/etc/fstab
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}
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/bin/busybox --install -s /bin
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# main script
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echo ""
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echo -e "${BOLD}CRUX 3.7 - ${BLUE}https://crux.nu/${NORM}"
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echo ""
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exec >/dev/console </dev/console 2>&1
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echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting "
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echo -e -n "${BOLD}${GREEN}/proc${NORM}"
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mount -t proc proc /proc
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PRINTK="`cat /proc/sys/kernel/printk`"
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echo "0" > /proc/sys/kernel/printk
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echo -e ", ${BOLD}${GREEN}/sys${NORM}."
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mount -t sysfs sysfs /sys
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grep -q "debug" /proc/cmdline
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if [ $? -eq 0 ]
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then
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DEBUG=1
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fi
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grep -q "dshell" /proc/cmdline
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if [ $? -eq 0 ]
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then
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DSHELL=1
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fi
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echo -e -n " ${BOLD}${BLUE}*${NORM} Populating /dev via mdev... "
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mdev -s
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checkReturn
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echo -e -n " ${BOLD}${BLUE}*${NORM} Registering mdev as hotplug agent... "
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echo "/bin/mdev" > /proc/sys/kernel/hotplug
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checkReturn
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if [ -d /lib/modules ]
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then
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echo -e -n " ${BOLD}${BLUE}*${NORM} Loading modules... "
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# filesystem
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load_fs_modules() {
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# no notification for fs modules since they're generic
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#echo -e -n "${BOLD}${BLUE}File Systems${NORM}"
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for mod in crc32c libcrc32c isofs ext2 ext4 reiserfs xfs jfs \
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nls_cp437 nls_iso8859-1 vfat msdos btrfs
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do
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if [ ! -z "$DEBUG" ]
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then
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echo -n " $mod"
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fi
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modprobe $mod
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done
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#echo -n ", "
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}
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# cdrom
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load_cdrom_modules() {
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# no notification for cdrom modules since they're generic
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#echo -e -n "${BOLD}${BLUE}CDROM${NORM}"
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# there's only one cdrom module for now but the loop allows for adding
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# more if ever needed
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for mod in cdrom
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do
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if [ ! -z "$DEBUG" ]
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then
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echo -n " $mod"
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fi
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modprobe $mod
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done
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#echo -n ", "
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}
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# SCSI
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load_scsi_modules() {
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echo -e -n "${BOLD}${BLUE}SCSI${NORM}"
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for mod in scsi_mod sr_mod sd_mod scsi_transport_fc scsi_transport_iscsi \
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scsi_transport_sas scsi_transport_spi 3w-9xxx 3w-xxxx 53c700 BusLogic \
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NCR53c406a a100u2w aacraid advansys aha152x aha1542 aha1740 aic79xx \
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aic7xxx aic94xx arcmsr atp870u dc395x dmx3191d dpt_i2o dtc eata fdomain \
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gdth hptiop in2000 initio ipr ips lpfc megaraid megaraid_mbox megaraid_sas \
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nsp32 pas16 psi240i qla1280 qla2xxx qla4xxx qlogicfas qlogicfas408 seagate \
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sim710 stex sym53c416 sym53c8xx t128 u14-34f ultrastor \
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wd7000 mptsas mptspi hpsa hv_storvsc virtio_scsi vmw_pvscsi
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do
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if [ ! -z "$DEBUG" ]
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then
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echo -n " $mod"
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fi
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modprobe $mod > /dev/null 2>&1
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done
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echo -n ", "
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}
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# USB
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load_usb_modules() {
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echo -e -n "${BOLD}${BLUE}USB${NORM}"
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for mod in usb-storage hid-generic hid-apple hid-logitech-dj
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do
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if [ ! -z "$DEBUG" ]
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then
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echo -n " $mod"
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fi
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modprobe $mod
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done
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echo -n ", "
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}
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# ATA
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load_ata_modules() {
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echo -e -n "${BOLD}${BLUE}ATA${NORM}"
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for mod in libata libahci ahci sata_promise sata_sil sata_svw sata_via \
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sata_mv sata_nv sata_sil24 sata_sx4 sata_sis sata_uli \
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sata_vsc sata_qstor sata_inic162x ata_piix pata_mpiix \
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pata_pdc2027x pata_radisys pata_sil680 pata_rz1000 pata_cmd640 \
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pata_efar pata_cmd64x pata_hpt366 pata_hpt37x pata_hpt3x3 \
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pata_opti pata_optidma pata_it8213 pata_ninja32 pata_it821x \
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pata_artop pata_cypress pata_serverworks pata_ns87410 \
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pata_ns87415 pata_ali pata_amd pdc_adma ata_generic \
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pata_atiixp pata_triflex pata_netcell pata_sch pata_sis \
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pata_hpt3x2n pata_marvell pata_jmicron pata_via pata_sl82c105
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do
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if [ ! -z "$DEBUG" ]
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then
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echo -n " $mod"
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fi
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modprobe $mod
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done
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echo -n ", "
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}
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# FireWire
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load_firewire_modules() {
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echo -e -n "${BOLD}${BLUE}FireWire${NORM}"
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for mod in core ohci sbp2
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do
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if [ ! -z "$DEBUG" ]
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then
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echo -n " $mod"
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fi
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modprobe firewire-$mod
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done
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echo -n ", "
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}
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MODORDER="fs cdrom ata scsi usb firewire"
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for MODS in $MODORDER
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do
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grep -q "no$MODS" /proc/cmdline
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[ $? -ne 0 ] && load_${MODS}_modules
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done
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echoDone
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else
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echo -e " ${BOLD}${YELLOW}*${NORM} No modules were found in the initial RAM filesystem."
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fi
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grep -q "devicetimeout=*" /proc/cmdline
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if [ $? -eq 0 ]
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then
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for opt in `cat /proc/cmdline`
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do
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echo $opt | grep -q "devicetimeout"
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if [ $? -eq 0 ]
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then
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DEVTIMEOUT=`echo $opt | cut -d= -f2`
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fi
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done
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else
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DEVTIMEOUT=10
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fi
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echo -e " ${BOLD}${BLUE}*${NORM} Waiting $DEVTIMEOUT seconds for devices to settle..."
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sleep $DEVTIMEOUT
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# if root=/dev/XXX was specified on the command line, use that as the new root
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# instead of searching for the media and using it. if it fails, fall back to
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# the media
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grep -q "root=/dev/*" /proc/cmdline
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if [ $? -eq 0 ]
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then
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#echo "root= was specified"
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for opt in `cat /proc/cmdline`
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do
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echo "$opt" | grep -q root=
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if [ $? -eq 0 ]
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then
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ROOTDEV=`echo $opt | cut -d= -f2`
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fi
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done
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mkdir -p /newroot
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# check the specified root device to see if it has an init
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mount $ROOTDEV /newroot
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if [ $? -ne 0 ]
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then
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echo -e " ${BOLD}${RED}*${NORM} Unable to mount the specified root device! Falling back to the live media."
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find_and_mount_media
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else
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if [ -x /newroot/sbin/init ]
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then
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echo -e " ${BOLD}${BLUE}*${NORM} Mounted root device $ROOTDEV."
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else
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echo -e " ${BOLD}${RED}*${NORM} The specified root device ($ROOTDEV) does not appear to be usable! Falling back to the live media."
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umount /newroot
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find_and_mount_media
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fi
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fi
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else
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find_and_mount_media
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fi
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# copy busybox for debugging
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if [ ! -z "${DEBUG}" ]
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then
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cp /bin/busybox /newroot/bin/
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fi
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if [ ! -z "$DSHELL" ]
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then
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echo "Starting debug shell."
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/bin/ash
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fi
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echo -e " ${BOLD}${BLUE}*${NORM} Switching root.\n"
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echo "$PRINTK" > /proc/sys/kernel/printk
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echo > /proc/sys/kernel/hotplug
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umount /sys
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umount /proc
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exec /bin/switch_root /newroot /sbin/init
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echo "Something's broken, here's a shell."
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exec /bin/sh
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