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|
#!/bin/bash
# Global Variables:
# CDBOOT -- is booting off CD
# LIVECD_CONSOLE -- console that is specified on commandline
# -- (ttyS0, etc) Only defined if passed to kernel
# LIVECD_CONSOLE_BAUD -- console baudrate specified
# LIVECD_CONSOLE_PARITY -- console parity specified
# LIVECD_CONSOLE_DATABITS -- console databits specified
[[ ${RC_GOT_FUNCTIONS} != "yes" ]] && [[ -e /etc/init.d/functions.sh ]] && source /etc/init.d/functions.sh
livecd_parse_opt() {
case "$1" in
*\=*)
echo "$1" | cut -f2 -d=
;;
esac
}
livecd_get_cmdline() {
echo "0" > /proc/sys/kernel/printk
CMDLINE=$(cat /proc/cmdline)
export CMDLINE
}
livecd_console_settings() {
# scan for a valid baud rate
case "$1" in
300*)
LIVECD_CONSOLE_BAUD=300
;;
600*)
LIVECD_CONSOLE_BAUD=600
;;
1200*)
LIVECD_CONSOLE_BAUD=1200
;;
2400*)
LIVECD_CONSOLE_BAUD=2400
;;
4800*)
LIVECD_CONSOLE_BAUD=4800
;;
9600*)
LIVECD_CONSOLE_BAUD=9600
;;
14400*)
LIVECD_CONSOLE_BAUD=14400
;;
19200*)
LIVECD_CONSOLE_BAUD=19200
;;
28800*)
LIVECD_CONSOLE_BAUD=28800
;;
38400*)
LIVECD_CONSOLE_BAUD=38400
;;
57600*)
LIVECD_CONSOLE_BAUD=57600
;;
115200*)
LIVECD_CONSOLE_BAUD=115200
;;
esac
if [ "${LIVECD_CONSOLE_BAUD}" = "" ]
then
# If it's a virtual console, set baud to 38400, if it's a serial
# console, set it to 9600 (by default anyhow)
case ${LIVECD_CONSOLE} in
tty[0-9])
LIVECD_CONSOLE_BAUD=38400
;;
*)
LIVECD_CONSOLE_BAUD=9600
;;
esac
fi
export LIVECD_CONSOLE_BAUD
# scan for a valid parity
# If the second to last byte is a [n,e,o] set parity
local parity
parity=$(echo $1 | rev | cut -b 2-2)
case "$parity" in
[neo])
LIVECD_CONSOLE_PARITY=$parity
;;
esac
export LIVECD_CONSOLE_PARITY
# scan for databits
# Only set databits if second to last character is parity
if [ "${LIVECD_CONSOLE_PARITY}" != "" ]
then
LIVECD_CONSOLE_DATABITS=$(echo $1 | rev | cut -b 1)
fi
export LIVECD_CONSOLE_DATABITS
return 0
}
livecd_read_commandline() {
livecd_get_cmdline || return 1
for x in ${CMDLINE}
do
case "${x}" in
cdroot)
CDBOOT="yes"
RC_NO_UMOUNTS="^(/|/dev|/dev/pts|/lib/rcscripts/init.d|/proc|/proc/.*|/sys|/mnt/livecd|/newroot)$"
export CDBOOT RC_NO_UMOUNTS
;;
cdroot\=*)
CDBOOT="yes"
RC_NO_UMOUNTS="^(/|/dev|/dev/pts|/lib/rcscripts/init.d|/proc|/proc/.*|/sys|/mnt/livecd|/newroot)$"
export CDBOOT RC_NO_UMOUNTS
;;
console\=*)
local live_console
live_console=$(livecd_parse_opt "${x}")
# Parse the console line. No options specified if
# no comma
LIVECD_CONSOLE=$(echo ${live_console} | cut -f1 -d,)
if [ "${LIVECD_CONSOLE}" = "" ]
then
# no options specified
LIVECD_CONSOLE=${live_console}
else
# there are options, we need to parse them
local livecd_console_opts
livecd_console_opts=$(echo ${live_console} | cut -f2 -d,)
livecd_console_settings ${livecd_console_opts}
fi
export LIVECD_CONSOLE
;;
secureconsole)
export SECURECONSOLE="yes"
;;
esac
done
return 0
}
|
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