add image building commands

Author: socketpair

contrib/.gitignore

@@ -1,4 +1,5 @@
 /*.o
 /*.out
 /*.bin
-
+/squeeze
+/*.img

contrib/createimage.sh

@@ -0,0 +1,68 @@
+#!/bin/bash
+
+set -e -u
+
+if false; then
+    sudo debootstrap \
+        --variant=minbase \
+        --include=psmisc,mini-httpd,net-tools,iproute,iputils-ping,procps,netcat-openbsd,telnet,iptables,wget,tcpdump,curl,gdb,binutils,gcc,libc6-dev,lsof,strace \
+        --exclude=locales,aptitude,gnupg,cron,udev,tasksel,rsyslog,groff-base,manpages,gpgv,man-db,apt,debian-archive-keyring,sysv-rc,sysvinit,insserv,python2.6 \
+        --arch i386 \
+        squeeze squeeze \
+        'http://mirror.yandex.ru/debian'
+fi
+
+IMAGE_SIZE=120 # megabytes
+#icount=`find squeeze | wc -l`
+INODE_COUNT=7000
+
+rm -f hda.img
+fallocate --length=${IMAGE_SIZE}M hda.img
+mke2fs -F -q -m 0 -N $INODE_COUNT hda.img
+
+ddd=/tmp/outimage
+mkdir -p $ddd
+
+echo 'root:qwe' | sudo chroot squeeze chpasswd
+sudo unshare -m -- bash -c "
+set -x -e -u
+mount -n -o loop hda.img -t ext2 $ddd
+tar -C squeeze \
+    --exclude='./var/cache*' \
+    --exclude='./usr/share/locale*' \
+    --exclude='./usr/share/zoneinfo*' \
+    --exclude='./usr/share/doc*' \
+    --exclude='./usr/share/man*' \
+    --exclude='./usr/share/info*' \
+    --exclude='./var/lib/apt*' \
+    -c . | tar -C $ddd -x
+
+cat show_boot_time.c | chroot $ddd gcc -m32 -xc -s -Os - -o /usr/bin/show_boot_time
+
+rm -f $ddd/sbin/init;
+cp -f init.sh $ddd/sbin/init
+rm -rf $ddd/root
+ln -s /tmp/root $ddd/root
+
+rm -rf $ddd/var/run
+ln -s /tmp     $ddd/var/run
+
+:>| $ddd/etc/resolv.conf
+rm -f $ddd/etc/mtab
+ln -s /proc/mounts $ddd/etc/mtab
+mknod $ddd/dev/ppp c 108 0
+mknod $ddd/dev/clipboard c 10 231
+mknod $ddd/dev/ttyS0 c 4 64
+mknod $ddd/dev/ttyS1 c 4 65
+mknod $ddd/dev/ttyS2 c 4 66
+mknod $ddd/dev/ttyS3 c 4 67
+mknod $ddd/dev/hda b 3 0
+mknod $ddd/dev/hdb b 3 64
+mknod $ddd/dev/hdb1 b 3 65
+
+echo -e '#!/bin/sh\necho \$* > /dev/clipboard\n' > $ddd/bin/answer
+chmod a+x $ddd/bin/answer
+df -h $ddd/
+"
+rm -rf $ddd
+make splitted

contrib/init.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+show_boot_time 2>/dev/null
+
+echo "JSLinux started, initializing..."
+
+export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin
+export HOME=/root
+export TERM=vt100
+mount -n -t proc /proc /proc
+mount -n -t sysfs /sys /sys
+mount -n -t devpts devpts /dev/pts
+mount -n -t tmpfs /tmp /tmp
+mkdir -p "/tmp/root"
+ip link set up dev lo
+
+main() {
+    echo >/dev/clipboard
+
+    while :; do
+        setsid sh -c "exec bash 0<>/dev/ttyS0 1>&0 2>&0"
+    done
+}
+
+. /dev/clipboard
+
+main "$@"

contrib/test_in_kvm.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+kvm -kernel ~/src/linux/arch/i386/boot/bzImage -snapshot -hda hda.img -hdb hda.img -append 'root=/dev/hda console=ttyS0 notsc=1' -serial stdio -net none -M isapc -m 16