diff options
Diffstat (limited to 'packages/altboot/files/altboot.func')
| -rw-r--r-- | packages/altboot/files/altboot.func | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/packages/altboot/files/altboot.func b/packages/altboot/files/altboot.func new file mode 100644 index 0000000000..761c51f9b4 --- /dev/null +++ b/packages/altboot/files/altboot.func @@ -0,0 +1,261 @@ +#! /bin/sh +# This function checks for the presence of a real filesystem and loop-images on the target +# $1 = folder of rootfs, $2 = runlevel (defaults to 5) +check_target() { + # Check if there is a /sbin/init or /sbin/init.sysvinit on the card + if test -x $1/sbin/init -o -x $1/$REAL_INIT + then + real_fs_found=1 + else + echo -e "Note: No INIT [$REAL_INIT] found on target" + fi + + # Check for loop-images + if (ls $1/$IMAGE_PATH/*rootfs.bin) >/dev/null 2>&1 + then + image_found=1 + else + echo "Note: No boot-images found in [$1/$IMAGE_PATH]" + fi + + # Check if we have both, a real fs and boot-images. If so, ask the user what to boot + if test "$real_fs_found" = 1 -a "$image_found" = 1 + then + echo -e "\nI have found a real filesystem and boot-images on the target" + echo -e "What do you want to boot?\n" + + echo -e "\t[1] The real filesystem" + echo -e "\t[2] A loop-image" + echo "" + + while test -z "$ans" + do + echo -n "Your choice: " + read junk < /dev/tty1 + + if test "$junk" = 1 -o "$junk" = 2 + then + ans="$junk" + fi + done + + case "$ans" in + 1) pivot_realfs "$1" "$2">/dev/tty0;; + 2) pivot_image "$1" "$2">/dev/tty0;; + esac + + exit 0 + fi + + # Boot a real filesystem + test "$real_fs_found" = 1 && pivot_realfs "$1" >/dev/tty0 + + # Boot a loop-image + test "$image_found" = 1 && pivot_image "$1" >/dev/tty0 + + if test "$real_fs_found" != 1 -a "$image_found" != 1 + then + die "Nothing to do!" + fi +} + +# This function pivot_root's into a real filesystem calling $newrootfs/sbin/init +# $1 = The new rootfs +pivot_realfs() { + test -z "$2" && RL="5" || RL="$2" + mkdir -p $1/media/ROM || die "mkdir -p $1/media/ROM failed" + + mount -o remount,ro / + + echo -n "Pivoting root..." + if (/sbin/pivot_root $1 $1/media/ROM) + then + echo "Success" + + # Interestingly, this doesn't work with the "real" mount + # Without this command, /dev would be mounted under /media/ROM/dev after pivoting root + /bin/busybox mount -o move /media/ROM/dev /dev + + cd / + + # Boot init.sysvinit if it is available or use /sbin/init instead + if test -x $REAL_INIT + then + echo "Calling INIT [$REAL_INIT $RL]" + exec /usr/sbin/chroot . $REAL_INIT $RL >/dev/tty0 2>&1 + else + echo "Calling INIT [/sbin/init $RL]" + exec /usr/sbin/chroot . /sbin/init $RL >/dev/tty0 2>&1 + fi + else + echo "FAILED" + die "* * * pivot_root failed! * * *" + fi +} + +# This function loop-mounts an image-file and pivot_root's into it +# $1: The new rootfs +pivot_image() { + test -z "$2" && RL="5" || RL="$2" + cd $1/$IMAGE_PATH + + # Check for rootfs images on the card + if test "`ls *rootfs.bin | wc -l | tr -d " "`" -gt 1 + then + echo -e "\n\nPlease select a rootfs:\n" + + # Show all available images + x=0 + for file in `ls *rootfs.bin` + do + let x=$x+1 + echo -e "\t\t[$x] $file" + done + + echo "" + + IMAGE_NAME="" + while test -z "$IMAGE_NAME" + do + echo -en "Please choose one of the above: " + read junk < /dev/tty1 + + x=0 + for file in `ls *rootfs.bin` + do + let x=$x+1 + if test "$x" = "$junk" + then + IMAGE_NAME="$file" + fi + done + done + else + IMAGE_NAME="`ls *rootfs.bin`" + test -z "$IMAGE_NAME" && die "No rootfs found (*rootfs.bin) in $1/$IMAGE_PATH" + fi + + echo "Using [$IMAGE_NAME]" + + mkdir -p /media/image || die "mkdir -p /media/image failed" + + + if test "$FSCK_IMAGES" = yes + then + echo "Checking file system on [$IMAGE_NAME]" + losetup /dev/loop0 $1/$IMAGE_PATH/$IMAGE_NAME || die "losetup /dev/loop0 $1/$IMAGE_PATH/$IMAGE_NAME failed!" + fsck.ext3 -p /dev/loop0 || sleep 2 + losetup -d /dev/loop0 + fi + + echo -e "\n* * * Booting rootfs image * * *\n" + + + # Busybox's "mount" doesn't seem to like "-o loop" for some reason + # It works on collie and b0rks on poodle. + losetup /dev/loop1 $1/$IMAGE_PATH/$IMAGE_NAME || die "losetup /dev/loop1 $1/$IMAGE_PATH/$IMAGE_NAME failed!" + mount /dev/loop1 /media/image || die "mount /dev/loop1 /media/image failed!" + + + mkdir -p /media/image/media/ROM || die "mkdir -p /media/image/media/ROM failed" + + echo -n "Pivoting root..." + if (/sbin/pivot_root /media/image /media/image/media/ROM) + then + echo "Success" + + cd / + + /bin/busybox mount -o move /media/ROM$1 $1 + /bin/busybox mount -o move /media/ROM/dev /dev + /bin/busybox mount -o move /media/ROM/proc /proc >/dev/null 2>&1 + + echo "Calling INIT" + exec /usr/sbin/chroot . /sbin/init $RL >/dev/tty0 2>&1 + else + echo "FAILED" + die "* * * pivot_root failed! * * *" + fi + + +} + +# This functions configures the master password for altboot if none is set +set_password() { + mount -o remount,rw / + if test -z "$MASTER_PASSWORD" + then + echo -e "\nAltboot is a boot-manager which allows to boot from SD, CF and NFS\n\n" + echo -e "\nFor security reasons altboot requires a password\nto boot into single-user mode or init=/bin/sh" + echo -e "\nThis is *not* your root password! It is used by altboot alone!" + echo -e "Please enter a new master password:\n" + + while true + do + echo -en "New password: " + read junk1 < /dev/tty0 + if ! test -z "$junk1" + then + echo -n "Repeat: " + read junk2 < /dev/tty0 + + if test "$junk1" = "$junk2" + then + crypt_pw="`echo "$junk1" | md5sum | awk '{print $1}'`" + + if test -e /etc/hutils.conf + then + sed "/^MASTER_PASSWORD/s/\(.*\=\).*/\1\"$crypt_pw\"/" /etc/hutils.conf > /etc/hutils.conf_ + mv /etc/hutils.conf_ /etc/hutils.conf + echo "Password changed." + fi + if test -e /etc/altboot.cfg + then + sed "/^MASTER_PASSWORD/s/\(.*\=\).*/\1\"$crypt_pw\"/" /etc/altboot.cfg > /etc/altboot.cfg_ + mv /etc/altboot.cfg_ /etc/altboot.cfg + MASTER_PASSWORD="$crypt_pw" + echo "Password changed." + fi + + break + else + echo -e "Passwords didn't match, try again\n" + fi + fi + done + fi + +} + +# This function asks for altboots master password. It only returns if the correct password was supplied +verify_master_pw() { + if ! test -z "$MASTER_PASSWORD" + then + auth_timeout="3" + + echo "Please enter your altboot master password" + + cnt=0 + while true + do + let cnt=$cnt+$auth_timeout + echo -n "Password: " + read junk < /dev/tty0 + + if test "`echo "$junk" | md5sum | awk '{print $1}'`" = "$MASTER_PASSWORD" + then + break + else + echo "[`echo "$junk" | md5sum | awk '{print $1}'`]" + echo "[$MASTER_PASSWORD]" + echo "Wrong password, sleeping $cnt seconds..." + sleep $cnt + +# if test "$cnt" -gt 10 +# then +# break +# fi + fi + done + fi +} |