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<hr><p align="left"><small>发信人: turbolinux (hoho~神啊，救救我吧...), 信区: Embedded <br>
标 题: Embedded Linux Howto (5) <br>
发信站: BBS 水木清华站 (Thu Jul 12 00:32:34 2001) <br>
<br>
5. Installing TinyLogin & login dependencies <br>
TinyLogin is available at http://tinylogin.lineo.com. <br>
<br>
It will give us the following tools in less than 35Ko : <br>
<br>
/bin/addgroup, /bin/adduser, /bin/delgroup, /bin/deluser, /bin/login, <br>
/bin/su, /sbin/getty, /sbin/sulogin, /usr/bin/passwd <br>
<br>
Please refers to your main distribution doc or man pages to have a <br>
full description of those commands. <br>
<br>
5.1 Configuring TinyLogin <br>
[... part of TinyLogin README ...] TinyLogin is modularized to easily <br>
allow you to build only the components you need, thereby reducing binary <br>
size. To turn off unwanted TinyLogin components, simply edit the file <br>
tinylogin.def.h and comment out the parts you do not want using C++ <br>
style (//) comments. <br>
<br>
5.2 Installing TinyLogin <br>
After the build is complete a tinylogin.links file is generated which is <br>
then used by 'make install' to create symlinks to the tinylogin <br>
binary for all compiled in functions. By default, 'make install' will <br>
place a symlink forest into `pwd`/_install unless you have defined the <br>
PREFIX environment variable. <br>
<br>
5.3 Installing Sysvinit & start-stop-daemon <br>
After the kernel is done loading it attempts to run the init program <br>
to finalize the boot process. <br>
<br>
Unpack the Sysvinit archive. <br>
Go to the src directory <br>
Compile the package by running make <br>
Copy the init executable in $EMBPART/sbin <br>
The Sysvinit package also offers a C version of the start-stop-deamon in <br>
the contrib directory. <br>
Compile it. <br>
Copy the file in $EMBPART/usr/sbin <br>
5.4 Configuring Sysvinit <br>
Sysvinit needs a configuration file named inittab and placed in <br>
$EMBPART/etc. The following is the one used in the LEM distro: <br>
<br>
<br>
<br>
<br>
# /etc/inittab: init(8) configuration. <br>
# $Id: inittab,v 1.6 1997/01/30 15:03:55 miquels Exp $ <br>
# Modified for LEM 2/99 by Sebastien HUET <sebhuet@linux-embedded.org> <br>
<br>
# default rl. <br>
id:2:initdefault: <br>
<br>
# first except in emergency (-b) mode. <br>
si::sysinit:/etc/init.d/rcS <br>
<br>
# single-user mode. <br>
~~:S:wait:/sbin/sulogin <br>
<br>
# /etc/init.d executes the S and K scripts upon change <br>
# 0:halt 1:single-user 2-5:multi-user (5 may be X with xdm or other) 6: <br>
reboot. <br>
l0:0:wait:/etc/init.d/rc 0 <br>
l1:1:wait:/etc/init.d/rc 1 <br>
l2:2:wait:/etc/init.d/rc 2 <br>
l3:3:wait:/etc/init.d/rc 3 <br>
l4:4:wait:/etc/init.d/rc 4 <br>
l5:5:wait:/etc/init.d/rc 5 <br>
l6:6:wait:/etc/init.d/rc 6 <br>
<br>
# CTRL-ALT-DEL pressed. <br>
ca:12345:ctrlaltdel:/sbin/shutdown -t1 -r now <br>
<br>
# Action on special keypress (ALT-UpArrow). <br>
kb::kbrequest:/bin/echo "Keyboard Request--edit /etc/inittab to let this <br>
work." <br>
<br>
# /sbin/mingetty invocations for runlevels. <br>
1:2345:respawn:/sbin/getty 9600 tty1 <br>
2:23:respawn:/sbin/getty 9600 tty2 <br>
#3:23:respawn:/sbin/getty tty3 #you may add console there <br>
#4:23:respawn:/sbin/getty tty4 <br>
<br>
5.5 Creating initial boot scripts <br>
As seen in the inittab file, Sysvinit needs additional scripts in <br>
their own directories. <br>
<br>
Creating the necessary directories and base files <br>
<br>
cd $EMBPART/etc <br>
mkdir rc0.d rc1.d rc2.d rc3.d rc4.d rc5.d rc6.d init.d <br>
rcS.d rc.boot <br>
<br>
<br>
Go to the unpacked Sysvinit source directory. <br>
Copy the debian/etc/init.d/rc to:$EMBART/etc/init.d <br>
Go to the $EMBPART/etc/init.d/ <br>
Create a new file rcS like those in LEM: <br>
#!/bin/sh <br>
PATH=/sbin:/bin:/usr/sbin:/usr/bin <br>
runlevel=S <br>
prevlevel=N <br>
umask 022 <br>
export PATH runlevel prevlevel <br>
./etc/default/rcS <br>
export VERBOSE <br>
# Trap CTRL-C only in this shell so we can interrupt subprocesses. <br>
trap ":" 2 3 20 <br>
# Call all parts in order. <br>
for i in /etc/rcS.d/S??* <br>
do <br>
[ ! -f "$i" ] && continue <br>
case "$i" in <br>
*.sh) <br>
( <br>
trap - 2 3 20 <br>
. $i start <br>
) <br>
;; <br>
*) <br>
$i start <br>
;; <br>
esac <br>
done <br>
# run the files in /etc/rc.boot <br>
[ -d /etc/rc.boot ] && run-parts /etc/rc.boot <br>
<br>
Copy run-parts from your distro to $EMBPART/bin <br>
Adding base scripts <br>
<!-reboot----------------------------------------------> <br>
<br>
Create a new file reboot containing the following: <br>
#!/bin/sh <br>
PATH=/sbin:/bin:/usr/sbin:/usr/bin <br>
echo -n "Rebooting... " <br>
reboot -d -f -i <br>
<br>
<!-halt----------------------------------------------> <br>
<br>
Create a new file halt containing the following: <br>
#!/bin/sh <br>
PATH=/sbin:/bin:/usr/sbin:/usr/bin <br>
halt -d -f -i -p <br>
<br>
<!-mountfs----------------------------------------------> <br>
<br>
Create a new file mountfs containing the following: <br>
<br>
Creating initial scripts <br>
<br>
5.6 Copying passwd & group files <br>
<br>
<br>
------------------------------------------------------------------------ <br>
-------- <br>
<br>
-- <br>
Welcome to http://www.EnjoySmart.com <br>
-->Dedicated to Smart Home & Network Appliances <br>
<br>
<br>
※ 来源:·BBS 水木清华站 smth.org·[FROM: 166.111.174.125] <br>
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