Precedence: list
MIME-Version: 1.0
Date: Tue, 26 Feb 2013 12:51:29 +0400
Message-ID: <CA+=xjkCj-ggSWtSUGrXVUiDNYAXw-V63z9d_=4Zscwg1Zg01qw@mail.gmail.com>
Subject: [alpine-devel] mkinitfs initramfs-init questions
From: =?UTF-8?B?0JXQstCz0LXQvdC40LkgJ1J1c2gnINCd0LXQv9C+0LzQvdGP0YnQuNC5?= <rush.zlo@gmail.com>
To: alpine-devel@lists.alpinelinux.org
Content-Type: text/plain; charset=UTF-8

There are some magic when parsing kernel command line (at the end of message):

1. Which reason for doing sed 's: :_:g' ? What command line will be
affected this for example?
2. Syslinux (5.x) pass kernel path as the first arg (twice in my
case). This code run with errors "/init: eval: line 1:
KOPT_/boot/datacom=yes: not found". This a bug or feature?
3. I've passed console=tty0 console=ttyS1,115200 for my Ubuntu kernels
on Dell servers with IPMI SOL to see kernel output both on IP KVM and
IPMI SOL (because not everywhere I have both). I think tty0 must not
be placed in inittab, because it is "current console". Seems like a
bug?
4. Code looks overcomplicated because there are
  a) not many options to be parsed by initramfs-init
  b) not all kernel options must be parsed by initramfs-init, unknown
options must be skipped (and errors as in #2 will not be raised in the
future)

8<------------------------------------------------------------------------------------------->8
# read the kernel options. We use eval set so we can handle things like
# acpi_osi="!Windows 2006"
eval set -- `cat /proc/cmdline`

while [ $# -gt 0 ]; do
        case "$1" in
                s|single|1)
                        SINGLEMODE=yes ;;
                console=*)
                        CONSOLE="$CONSOLE ${1#console=}";;
                *=*)    eval "KOPT_${1%%=*}='${1#*=}'" ;;
                no*)    eval "KOPT_$(echo ${1#no} | sed 's: :_:g')=no" ;;
                *)      eval "KOPT_$(echo $1 | sed 's: :_:g')=yes" ;;
        esac
        shift
done
8<------------------------------------------------------------------------------------------->8

/ # cat /proc/cmdline
/boot/datacom /boot/datacom initrd=/boot/datacom.gz
alpine_dev=usbdisk:vfat modules=loop,squashfs,sd-mod,usb-storage
nomodeset console=tty0 console=ttyS1,115200

--
Cogito ergo sum


---
Unsubscribe:  alpine-devel+unsubscribe@lists.alpinelinux.org
Help:         alpine-devel+help@lists.alpinelinux.org
---