151 lines
4.4 KiB
Bash
151 lines
4.4 KiB
Bash
#!/bin/bash
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set -euo pipefail
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# Path to the variables log file
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VARIABLES_LOG="/root/variables.log"
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# Auto-elevate script if not running as root
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if [ "$EUID" -ne 0 ]; then
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echo "🔒 Root privileges required. Re-running with sudo..."
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exec sudo "$0" "$@"
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fi
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# Check if variables log file exists and ask if user wants to reload them
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if [ -f "$VARIABLES_LOG" ]; then
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read -p "Found saved variables. Do you want to reload them? (y/n): " reload_choice
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if [[ "$reload_choice" == "y" || "$reload_choice" == "Y" ]]; then
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echo "Reloading saved variables from $VARIABLES_LOG..."
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# Reload the variables from the file
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source "$VARIABLES_LOG"
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# Check if any variable is missing after loading
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if [ -z "${partition:-}" ] || [ -z "${efi:-}" ] || [ -z "${home:-}" ]; then
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echo "❌ One or more required variables are missing from the log file. Please re-enter them."
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exit 1
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fi
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echo "Successfully reloaded variables:"
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echo " OS Partition: $partition"
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echo " EFI Partition: $efi"
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echo " Home Partition: $home"
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else
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echo "Proceeding with fresh input..."
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fi
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fi
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# Show block devices to assist user if variables aren't loaded
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lsblk
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# Prompt for partitions if variables weren't reloaded
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if [ -z "${partition:-}" ]; then
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read -p "Enter the defective OS partition (e.g., sda2): " partition
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fi
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if [ -z "${efi:-}" ]; then
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read -p "Enter the EFI partition (e.g., sda1): " efi
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fi
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if [ -z "${home:-}" ]; then
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read -p "Enter the Home partition (e.g., sda3): " home
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fi
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# Save the variables to a file for later use (in key=value format)
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echo "partition=\"$partition\"" > "$VARIABLES_LOG"
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echo "efi=\"$efi\"" >> "$VARIABLES_LOG"
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echo "home=\"$home\"" >> "$VARIABLES_LOG"
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echo "Variables saved to $VARIABLES_LOG."
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# Check and create /rescue directory if not exists
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if [ -d /rescue ]; then
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echo "/rescue exists already, continuing..."
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else
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echo "Creating /rescue directory..."
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mkdir -p /rescue
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fi
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# Ensure necessary mount points are available before mounting
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if [ -d /rescue/boot ]; then
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echo "/rescue/boot exists already, continuing..."
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else
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echo "Creating /rescue/boot directory..."
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mkdir -p /rescue/boot
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fi
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if [ -d /rescue/home ]; then
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echo "/rescue exists already, continuing..."
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else
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echo "Creating /rescue/home directory..."
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mkdir -p /rescue/home
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fi
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if [ -d /rescue ]; then
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echo "/rescue exists already, continuing..."
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else
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echo "Creating /rescue directory..."
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mkdir -p /rescue
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fi
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# ----------------------------------------------------- #
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if [ -d /rescue/proc ]; then
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echo "/rescue/proc exists already, continuing..."
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else
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echo "Creating /rescue/proc directory..."
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mkdir -p /rescue/proc
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fi
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if [ -d /rescue/sys ]; then
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echo "/rescue/sys exists already, continuing..."
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else
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echo "Creating /rescue directory..."
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mkdir -p /rescue/sys
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fi
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if [ -d /rescue/dev/pts ]; then
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echo "/rescue/dev/pts exists already, continuing..."
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else
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echo "Creating /rescue/dev/pts directory..."
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mkdir -p /rescue
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fi
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if [ -d /rescue/run ]; then
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echo "/rescue exists already, continuing..."
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else
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echo "Creating /rescue/run directory..."
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mkdir -p /rescue/run
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fi
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# ----------------------------------------------------- #
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if [ -d /rescue/boot ] && [ -d /rescue/home ] && [ -d /rescue/proc ] && [ -d /rescue/sys ] && [ -d /rescue/dev/pts ] && [ -d /rescue/run ]; then
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echo "All required directories exist. Proceeding with mounting procedure..."
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else
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echo "One or more required directories are missing. Please create them before chrooting."
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exit 1
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fi
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# Mount the partitions
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echo "Mounting OS partition..."
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mount "/dev/$partition" /rescue
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echo "Mounting EFI partition..."
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mount "/dev/$efi" /rescue/boot
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echo "Mounting Home partition..."
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mount "/dev/$home" /rescue/home
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# Mount virtual filesystems for chroot
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echo "Mounting /proc..."
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mount -t proc proc /rescue/proc
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echo "Mounting /sys..."
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mount -t sysfs sys /rescue/sys
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echo "Mounting /dev..."
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mount -o bind /dev /rescue/dev
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echo "Mounting /dev/pts..."
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mount -t devpts pts /rescue/dev/pts
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echo "Mounting /run..."
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mount -o bind /run /rescue/run
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# Ensure /etc exists and link resolv.conf for DNS inside chroot
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mkdir -p /rescue/etc
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ln -sf /etc/resolv.conf /rescue/etc/resolv.conf
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# Final instructions
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echo
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echo "✅ The chroot environment is ready."
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echo "➡️ To start chroot, run: chroot /rescue"
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echo "❌ When you're done, unmount everything with: umount -R /rescue"
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