Files
linuxkit/alpine/init
Justin Cormack 9305b37153 Do not prompt for username at login
Given you can login as root with no password on the console,
asking which user you would like to login as is rather pointless.

Do have to tweak /etc/issue though as busybox getty does not display it
without a prompt, and we want a whale.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
2016-09-14 11:38:55 +00:00

45 lines
878 B
Bash
Executable File

#!/bin/sh
setup_console() {
tty=${1%,*}
speed=${1#*,}
inittab="$2"
securetty="$3"
line=
term="linux"
[ "$speed" = "$1" ] && speed=115200
case "$tty" in
ttyS*|ttyAMA*|ttyUSB*|ttyMFD*)
line="-L"
term="vt100"
;;
tty0)
# skip current console
return 0
;;
esac
# skip consoles already in inittab
grep -q "^$tty:" "$inittab" && return
echo "$tty::once:cat /etc/issue" >> "$inittab"
echo "$tty::respawn:/sbin/getty -n -l /bin/sh $line $speed $tty $term" >> "$inittab"
if ! grep -q -w "$tty" "$securetty"; then
echo "$tty" >> "$securetty"
fi
}
/bin/mount -t tmpfs tmpfs /mnt
/bin/cp -a / /mnt 2>/dev/null
/bin/mount -t proc -o noexec,nosuid,nodev proc /proc
for opt in $(cat /proc/cmdline); do
case "$opt" in
console=*)
setup_console ${opt#console=} /mnt/etc/inittab /mnt/etc/securetty;;
esac
done
exec /bin/busybox switch_root /mnt /sbin/init