setup_lfs_user

#!/bin/bash

validate_lfs_mountpoint()
{
    if [ -z "$LFS" ]; then
        echo "LFS env is empty.. Please export LFS environment variable"
        exit 1
    fi

    if [ -z "$STRICTMOUNTPONITCHECK" ]; then
        return
    fi
    
    if ! mountpoint -q "$LFS"; then
        echo "$LFS directory is not mounted anywhere.. exiting"
        exit 1
    fi
}

setup_lfs_user()
{
    echo "Setting up lfs user and group"

    groupadd -f lfs

    if ! id -u lfs >/dev/null 2>&1; then
        useradd -s /bin/bash -g lfs -m -k /dev/null lfs
        echo 'lfs:lfs'| chpasswd
    fi

    [ ! -d "$LFS"/tools ] && mkdir -p "$LFS"/tools
    [ ! -d "$LFS"/lfs-source ] && mkdir -p "$LFS"/lfs-source
    [ ! -L /tools ] && ln -s "$LFS"/tools /
    [ ! -L /lfs-source ] && ln -s "$LFS"/lfs-source /
    [ -L /home/lfs/automate-lfs-build ] && rm /home/lfs/automate-lfs-build

    ln -s "$LFS"/automate-lfs-build /home/lfs/automate-lfs-build
    chown lfs "$LFS"/tools "$LFS"/lfs-source "$LFS"/automate-lfs-build

    echo "Setting up lfs user and group complete"
}

setup_lfs_bash()
{
    echo "Setting up bash for lfs user"
    su lfs - -c "cat > ~/.bash_profile << EOF
exec env -i HOME=\$HOME TERM=\$TERM PS1='\u:\w\$ ' /bin/bash
EOF"

    su lfs - -c "cat > ~/.bashrc << EOF
set +h
umask 022
LFS=/mnt/lfs
LC_ALL=POSIX
LFS_TGT=$(uname -m)-lfs-linux-gnu
PATH=/tools/bin:/bin:/usr/bin
export LFS LC_ALL LFS_TGT PATH
EOF"

    echo "Setting up bash for lfs user complete"
}

validate_lfs_mountpoint
setup_lfs_user
setup_lfs_bash
echo "Please login to lfs user using \"su - lfs\" and execute \"build_toolchain\" present inside \"~/automate-lfs-build\" script"