initial commit

.gitignore

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+out
+build
+downloads
+.log

build_image.sh

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+#!/bin/sh
+
+# Script to build linux install media image
+version=0.0.1
+# TolaMironcenko is licensed under MIT
+
+. ./colors.sh
+. ./funcs.sh
+
+#------------ config ------------------
+root=$(pwd)
+disk="sdz"
+distro_name="Simple"
+distro_desc="Simple linux distro"
+distro_codename="zero_zero_one"
+hyperv_support="false"
+out=$root/out
+build=$root/build
+kernel=""
+busybox=""
+sourcesfilename=sources.txt
+initramfsfile=$root/initramfs/initramfs.txt
+initramfspath=$build/initramfs
+rootfsfile=$root/rootfs/rootfs.txt
+rootfspath=$build/rootfs
+#--------------------------------------
+
+#-------- check root ------------------
+if [ $(id -u) -ne 0 ]; then
+    printf "$URED** You are not root\n$RESET"
+    exit 1
+fi
+#--------------------------------------
+
+mkdir $out
+mkdir $root/.log
+
+download_sources() {
+    printf "$UGREEN** Downloading sources\n$RESET"
+    cat $sourcesfilename
+    if [ ! -d downloads ]; then mkdir downloads; fi
+    wget --input-file=$sourcesfilename --continue --directory-prefix=$root/downloads
+    check $? "Download sources"
+}
+
+initramfs() {
+    printf "$UGREEN** Building initramfs\n$RESET"
+    rm -r $initramfspath;
+    mkdir -p $initramfspath;
+    cd $initramfspath;
+    mkdir -p $(cat $initramfsfile);
+    cp $root/initramfs/init.in $initramfspath/init
+    chmod 755 $initramfspath/init
+    rm -r $build/busybox
+    mkdir -p $build/busybox
+    cd $build/busybox
+    tar -xjf $root/downloads/busybox-1.36.1.tar.bz2
+    check $? "Extract busybox"
+    cd busybox-1.36.1
+    cp $root/busybox/busybox-initramfs-config .config
+    export PATH=$PATH:/opt/toolchains/x86_64-buildroot-linux-uclibc-gcc/bin
+    printf "$UGREEN** Configuring busybox\n$RESET"
+    make CROSS_COMPILE=x86_64-buildroot-linux-uclibc- oldconfig &> $root/.log/busybox-configure.log
+    check $? "Configure busybox all logs in .log"
+    printf "$UGREEN** Building busybox\n$RESET"
+    make CROSS_COMPILE=x86_64-buildroot-linux-uclibc- -j16 &> $root/.log/busybox-build.log
+    check $? "Build busybox all logs in .log"
+    cp busybox $initramfspath/bin
+    cd $initramfspath/bin
+    for i in $(./busybox --list); do ln -s busybox $i; done
+    cd ..
+    find . | cpio -H newc -o | gzip > ../initramfs.img
+    check $? "Build initramfs.img image"
+    cd $root
+}
+
+rootfs() {
+    rm -rv $rootfspath
+    mkdir -pv $rootfspath
+    cd $rootfspath
+    mkdir -pv $(cat $rootfsfile)
+}
+
+clean() {
+    rm -rv $out
+    rm -rv $build
+}
+
+# download_sources
+initramfs

colors.sh

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+#!/bin/sh
+
+#reset
+RESET="\033[0m"
+
+#regularcolrs
+GREEN="\033[0;32m"       #GREEN
+BLUE="\033[0;34m"        #BLUE
+YELLOW="\033[1;33m"      #YELLOW
+RED="\033[0;31m"         #RED
+BLACK="\033[0;30m"       #BLACK
+PURPLE="\033[0;35m"      #PURPLE
+CYAN="\033[0;36m"        #CYAN
+WHITE="\033[0;37m"       #WHITE
+
+#bold
+BBLACK="\033[1;30m"      #BLACK
+BRED="\033[1;31m"        #RED
+BGREEN="\033[1;32m"      #GREEN
+BYELLOW="\033[1;33m"     #YELLOW
+BBLUE="\033[1;34m"       #BLUE
+BPURPLE="\033[1;35m"     #PURPLE
+BCYAN="\033[1;36m"       #CYAN
+BWHITE="\033[1;37m"      #WHITE
+
+#Underline
+UBLACK="\033[4;30m"      #BLACK
+URED="\033[4;31m"        #RED
+UGREEN="\033[4;32m"      #GREEN
+UYELLOW="\033[4;33m"     #YELLOW
+UBLUE="\033[4;34m"       #BLUE
+UPURPLE="\033[4;35m"     #PURPLE
+UCYAN="\033[4;36m"       #CYAN
+UWHITE="\033[4;37m"      #WHITE
+
+#Background
+ON_BLACK="\033[40m"      #BLACK
+ON_RED="\033[41m"        #RED
+ON_GREEN="\033[42m"      #GREEN
+ON_YELLOW="\033[43m"     #YELLOW
+ON_BLUE="\033[44m"       #BLUE
+ON_PURPLE="\033[45m"     #PURPLE
+ON_CYAN="\033[46m"       #CYAN
+ON_WHITE="\033[47m"      #WHITE
+
+#HighIntensity
+IBLACK="\033[0;90m"      #BLACK
+IRED="\033[0;91m"        #RED
+IGREEN="\033[0;92m"      #GREEN
+IYELLOW="\033[0;93m"     #YELLOW
+IBLUE="\033[0;94m"       #BLUE
+IPURPLE="\033[0;95m"     #PURPLE
+ICYAN="\033[0;96m"       #CYAN
+IWHITE="\033[0;97m"      #WHITE
+
+#BoldHighIntensity
+BIBLACK="\033[1;90m"     #BLACK
+BIRED="\033[1;91m"       #RED
+BIGREEN="\033[1;92m"     #GREEN
+BIYELLOW="\033[1;93m"    #YELLOW
+BIBLUE="\033[1;94m"      #BLUE
+BIPURPLE="\033[1;95m"    #PURPLE
+BICYAN="\033[1;96m"      #CYAN
+BIWHITE="\033[1;97m"     #WHITE
+
+#HighIntensitybackgrounds
+ON_IBLACK="\033[0;100m"  #BLACK
+ON_IRED="\033[0;101m"    #RED
+ON_IGREEN="\033[0;102m"  #GREEN
+ON_IYELLOW="\033[0;103m" #YELLOW
+ON_IBLUE="\033[0;104m"   #BLUE
+ON_IPURPLE="\033[0;105m" #PURPLE
+ON_ICYAN="\033[0;106m"   #CYAN
+ON_IWHITE="\033[0;107m"  #WHITE

funcs.sh

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+#!/bin/sh
+
+. ./colors.sh
+
+check() {
+    if [ $1 -ne 0 ]; then
+        printf "$URED** ERROR: $2\n$RESET"
+        exit 1
+    fi
+    printf "$UGREEN** SUCCESS: $2\n$RESET" 
+}

initramfs/init.in

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+#!/bin/sh
+
+problem()
+{
+   printf "Encountered a problem!\n\nDropping you to a shell.\n\n"
+   sh
+}
+
+no_device()
+{
+   printf "The device %s, which is supposed to contain the\n" $1
+   printf "root file system, does not exist.\n"
+   printf "Please fix this problem and exit this shell.\n\n"
+}
+
+no_mount()
+{
+   printf "Could not mount device %s\n" $1
+   printf "Sleeping forever. Please reboot and fix the kernel command line.\n\n"
+   printf "Maybe the device is formatted with an unsupported file system?\n\n"
+   printf "Or maybe filesystem type autodetection went wrong, in which case\n"
+   printf "you should add the rootfstype=... parameter to the kernel command line.\n\n"
+   printf "Available partitions:\n"
+}
+
+do_mount_root()
+{
+   mkdir /.root
+   [ -n "$rootflags" ] && rootflags="$rootflags,"
+   rootflags="$rootflags$ro"
+
+   case "$root" in
+      /dev/*    ) device=$root ;;
+      UUID=*    ) eval $root; device="$(findfs UUID=$UUID)" ;;
+      PARTUUID=*) eval $root; device="/dev/disk/by-partuuid/$PARTUUID" ;;
+      LABEL=*   ) eval $root; device="/dev/disk/by-label/$LABEL" ;;
+      ""        ) echo "No root device specified." ; problem ;;
+   esac
+
+   while [ ! -b "$device" ] ; do
+       no_device $device
+       problem
+   done
+
+   if ! mount -n -t "$rootfstype" -o "$rootflags" "$device" /.root ; then
+       no_mount $device
+       cat /proc/partitions
+       while true ; do sleep 10000 ; done
+   else
+       echo "Successfully mounted device $root"
+   fi
+}
+
+init=/sbin/init
+root=
+rootdelay=
+rootfstype=auto
+ro="ro"
+rootflags=
+device=
+resume=
+noresume=false
+
+mount -n -t devtmpfs dev /dev
+mount -n -t proc proc /proc
+mount -n -t sysfs sys /sys
+mount -n -t tmpfs run /run
+
+mkdir -p /dev/pts
+
+#mountpoint -q proc || mount -t proc proc proc
+#mountpoint -q sys || mount -t sysfs sys sys
+#mknod /dev/null c 1 3
+#if ! mountpoint -q dev
+#then
+ # mount -t tmpfs -o size=64k,mode=0755 tmpfs dev
+  #mount -t tmpfs -o mode=1777 tmpfs tmp
+  #mkdir -p dev/pts
+  #mdev -s
+#fi
+
+read -r cmdline < /proc/cmdline
+
+for param in $cmdline ; do
+  case $param in
+    init=*      ) init=${param#init=}             ;;
+    root=*      ) root=${param#root=}             ;;
+    rootdelay=* ) rootdelay=${param#rootdelay=}   ;;
+    rootfstype=*) rootfstype=${param#rootfstype=} ;;
+    rootflags=* ) rootflags=${param#rootflags=}   ;;
+    resume=*    ) resume=${param#resume=}         ;;
+    noresume    ) noresume=true                   ;;
+    ro          ) ro="ro"                         ;;
+    rw          ) ro="rw"                         ;;
+  esac
+done
+
+if [ -n "$rootdelay" ]; then sleep "$rootdelay"; fi
+do_mount_root
+
+for i in run tmp dev proc sys; do
+  [ -d /.root/$i ] || mkdir /.root/$i
+  mount -o bind /$i /.root/$i
+done
+mount -t devpts none /.root/dev/pts
+
+echo 0 > /proc/sys/kernel/printk
+
+exec switch_root /.root "$init" "$@"

initramfs/initramfs.txt

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+bin
+dev
+mnt
+proc
+root
+sys

rootfs/rootfs.txt

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+boot
+dev
+etc
+etc/init.d
+etc/network
+etc/network/if-down.d
+etc/network/if-post-down.d
+etc/network/if-pre-up.d
+etc/network/if-up.d
+etc/rc.d
+home
+mnt
+opt
+proc
+root
+run
+srv
+sys
+usr
+usr/bin
+usr/include
+usr/lib
+usr/local
+usr/local/bin
+usr/share
+usr/src
+var
+var/log
+var/run

sources.txt

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+https://www.kernel.org/pub/linux/kernel/v6.x/linux-6.7.4.tar.xz
+https://busybox.net/downloads/busybox-1.36.1.tar.bz2