Remove busybox and CLI dependencies from init system and scripts

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>

Dockerfile

@@ -23,9 +23,9 @@ FROM alpine:3.19
 COPY scripts/docker-install-packages.sh /tmp/
 RUN /tmp/docker-install-packages.sh
 
-# Alpine Linux includes BusyBox by default
+# SparkOS Philosophy: No CLI tools, GUI-only experience
-# BusyBox provides: shell (sh), networking (udhcpc, ip, ping, wget), and core utilities
+# The init system is completely self-contained with no external dependencies
-# This is verified by the test.sh script which shows BusyBox version and available applets
+# All functionality is provided through direct system calls in C
 
 # Create minimal rootfs structure
 COPY scripts/docker-setup-rootfs.sh /tmp/

rootfs/README.txt

@@ -1,43 +1,41 @@
 SparkOS Root Filesystem
 =======================
 
-This is the root filesystem for SparkOS, a minimal Linux distribution.
+This is the root filesystem for SparkOS, a GUI-only Linux distribution.
 
-Minimal System Packages:
+SparkOS Philosophy:
-  - Linux Kernel (with networking support)
+  - GUI-Only: No CLI tools, no shell, no Unix utilities
-  - SparkOS Init System (custom)
+  - Network-First: Networking integrated into Qt6 GUI
-  - Busybox (shell, utilities, networking)
+  - Direct Kernel Interface: Qt6 communicates directly with Linux kernel
-  - Git (for installing spark CLI)
+  - No Unix Baggage: No users, groups, passwords, or authentication
-  - Sudo (privilege elevation)
+
+Minimal System:
+  - Linux Kernel (with networking and framebuffer support)
+  - SparkOS Init System (completely self-contained, no dependencies)
+  - Qt6 GUI Application (all user interaction)
 
 Directory Structure:
-  /bin, /sbin       - Essential binaries
+  /sbin             - Init binary only
-  /etc              - Configuration files
+  /etc              - Minimal configuration files
   /proc, /sys, /dev - Kernel interfaces
   /tmp              - Temporary files
-  /usr              - User programs
+  /usr              - Qt6 GUI application and libraries
-  /var              - Variable data
+  /var              - Variable data (overlay mount)
   /root             - Root home directory
-  /home/spark       - Default user home directory
-
-Default User:
-  Username: spark (UID 1000)
-  Home: /home/spark
-  Sudo: Full access without password
-  Scripts: ~/clone-sparkos.sh for installing spark CLI
 
 Network Configuration:
-  /etc/network/interfaces - Wired network (DHCP)
+  - Managed entirely through Qt6 GUI
-  /etc/resolv.conf        - DNS configuration (8.8.8.8, 1.1.1.1)
+  - Init brings up interfaces via direct ioctl calls
-  /sbin/init-network      - Network initialization script
+  - DHCP and network management handled by Qt6 NetworkManager
+  - /etc/resolv.conf provides fallback DNS servers
 
-Bootstrap Process:
+Boot Process:
-  1. System boots as 'spark' user with wired networking (DHCP)
+  1. Linux kernel loads
-  2. Run ~/clone-sparkos.sh to install spark CLI
+  2. Init (PID 1) mounts filesystems
-  3. Use spark CLI to configure WiFi and system
+  3. Init brings up network interfaces
-  4. Install additional packages via spark CLI
+  4. Init spawns Qt6 GUI application
-  5. Use 'sudo' for any root-level operations
+  5. All user interaction through GUI
 
-Note: This is a minimal system. You'll need to populate /bin and /usr/bin
+Note: This is a minimal, GUI-only system.
-with actual binaries (busybox, git, sudo) from a proper Linux system
+      No shell, no CLI tools, no busybox.
-or by cross-compiling.
+      All functionality is provided through the Qt6 GUI application.

scripts/setup_rootfs.sh

@@ -1,8 +1,7 @@
 #!/bin/bash
 # SparkOS Setup Script
-# Sets up a minimal rootfs with busybox and essential utilities
+# Sets up a minimal rootfs for GUI-only SparkOS
 # Note: This script runs on the host system and uses bash for ${BASH_SOURCE}
-# The target system uses busybox sh instead.
 
 set -e
 
@@ -16,16 +15,12 @@ echo ""
 
 # Create directory structure
 echo "Creating directory structure..."
-mkdir -p "$ROOTFS_DIR"/{bin,sbin,etc,proc,sys,dev,tmp,usr/{bin,sbin,lib,lib64},var,root,home}
+mkdir -p "$ROOTFS_DIR"/{sbin,etc,proc,sys,dev,tmp,usr/{bin,sbin,lib,lib64},var,root}
-mkdir -p "$ROOTFS_DIR/etc"/{init.d,network}
 mkdir -p "$ROOTFS_DIR/var"/{log,run}
-mkdir -p "$ROOTFS_DIR/home/spark"
-mkdir -p "$ROOTFS_DIR/etc/sudoers.d"
 
 # Set permissions
 chmod 1777 "$ROOTFS_DIR/tmp"
 chmod 700 "$ROOTFS_DIR/root"
-chmod 755 "$ROOTFS_DIR/home/spark"
 
 # Create basic config files
 echo "Creating configuration files..."
@@ -40,19 +35,6 @@ cat > "$ROOTFS_DIR/etc/hosts" << 'EOF'
 ::1         localhost ip6-localhost ip6-loopback
 EOF
 
-# /etc/passwd
-cat > "$ROOTFS_DIR/etc/passwd" << 'EOF'
-root:x:0:0:root:/root:/bin/sh
-spark:x:1000:1000:SparkOS User:/home/spark:/bin/sh
-EOF
-
-# /etc/group
-cat > "$ROOTFS_DIR/etc/group" << 'EOF'
-root:x:0:
-spark:x:1000:
-sudo:x:27:spark
-EOF
-
 # /etc/fstab
 cat > "$ROOTFS_DIR/etc/fstab" << 'EOF'
 # <file system> <mount point> <type> <options> <dump> <pass>
@@ -62,320 +44,77 @@ devtmpfs        /dev          devtmpfs defaults         0 0
 tmpfs           /tmp          tmpfs   defaults          0 0
 EOF
 
-# /etc/resolv.conf - DNS configuration
+# /etc/resolv.conf - DNS configuration (managed by Qt6 GUI)
 cat > "$ROOTFS_DIR/etc/resolv.conf" << 'EOF'
 # SparkOS DNS Configuration
-# Fallback to public DNS servers for reliability
+# Managed by Qt6 GUI NetworkManager
+# Fallback to public DNS servers
 nameserver 8.8.8.8
 nameserver 8.8.4.4
 nameserver 1.1.1.1
 nameserver 1.0.0.1
 EOF
 
-# /etc/sudoers - Sudo configuration
-cat > "$ROOTFS_DIR/etc/sudoers" << 'EOF'
-# SparkOS Sudoers Configuration
-# Allow spark user to run any command without password
-
-# Default settings
-Defaults env_reset
-Defaults secure_path="/bin:/sbin:/usr/bin:/usr/sbin"
-
-# Root can run anything
-root ALL=(ALL:ALL) ALL
-
-# Spark user can run anything without password
-spark ALL=(ALL:ALL) NOPASSWD: ALL
-
-# Include sudoers.d directory
-@includedir /etc/sudoers.d
-EOF
-
-chmod 0440 "$ROOTFS_DIR/etc/sudoers"
-
-# /etc/network/interfaces - Wired network configuration
-cat > "$ROOTFS_DIR/etc/network/interfaces" << 'EOF'
-# SparkOS Network Configuration
-# Wired networking only for bootstrapping
-
-# Loopback interface
-auto lo
-iface lo inet loopback
-
-# Primary wired interface (DHCP)
-auto eth0
-iface eth0 inet dhcp
-EOF
-
-# /etc/profile
-cat > "$ROOTFS_DIR/etc/profile" << 'EOF'
-# SparkOS System Profile
-
-export PATH=/bin:/sbin:/usr/bin:/usr/sbin
-export PS1='SparkOS:\w\$ '
-export TERM=linux
-
-# Set HOME based on user
-if [ "$(id -u)" = "0" ]; then
-    export HOME=/root
-else
-    export HOME=/home/$(whoami)
-fi
-
-# Welcome message
-echo "Welcome to SparkOS!"
-echo "Type 'help' for available commands"
-echo ""
-EOF
-
-# Create .profile for root (busybox uses .profile instead of .bashrc)
-cat > "$ROOTFS_DIR/root/.profile" << 'EOF'
-# SparkOS Root Shell Configuration
-
-# Set prompt
-PS1='SparkOS:\w# '
-
-# Aliases
-alias ll='ls -lah'
-alias ..='cd ..'
-
-# Environment
-export EDITOR=vi
-export PAGER=less
-EOF
-
-# Create .profile for spark user
-cat > "$ROOTFS_DIR/home/spark/.profile" << 'EOF'
-# SparkOS User Shell Configuration
-
-# Set prompt
-PS1='SparkOS:\w\$ '
-
-# Aliases
-alias ll='ls -lah'
-alias ..='cd ..'
-
-# Environment
-export EDITOR=vi
-export PAGER=less
-EOF
-
-# Create clone-sparkos.sh script for spark user
-cat > "$ROOTFS_DIR/home/spark/clone-sparkos.sh" << 'EOF'
-#!/bin/sh
-# SparkOS CLI Installation Script
-# This script clones the SparkOS CLI repository
-
-echo "SparkOS CLI Installation"
-echo "========================"
-echo ""
-
-SPARK_REPO="https://github.com/johndoe6345789/spark-cli.git"
-INSTALL_DIR="$HOME/spark-cli"
-
-echo "This script will clone the SparkOS CLI to: $INSTALL_DIR"
-echo ""
-
-# Check if git is available
-if ! command -v git >/dev/null 2>&1; then
-    echo "Error: git is not installed"
-    echo "Please install git to continue"
-    exit 1
-fi
-
-# Check if directory already exists
-if [ -d "$INSTALL_DIR" ]; then
-    echo "Warning: $INSTALL_DIR already exists"
-    echo -n "Do you want to remove it and re-clone? (y/N): "
-    read answer
-    if [ "$answer" = "y" ] || [ "$answer" = "Y" ]; then
-        rm -rf "$INSTALL_DIR"
-    else
-        echo "Installation cancelled"
-        exit 0
-    fi
-fi
-
-# Clone the repository
-echo "Cloning spark CLI repository..."
-if git clone "$SPARK_REPO" "$INSTALL_DIR"; then
-    echo ""
-    echo "SparkOS CLI cloned successfully!"
-    echo ""
-    echo "Next steps:"
-    echo "  1. cd $INSTALL_DIR"
-    echo "  2. Follow the installation instructions in the repository"
-    echo ""
-else
-    echo ""
-    echo "Error: Failed to clone repository"
-    echo "Please check your network connection and try again"
-    exit 1
-fi
-EOF
-
-chmod +x "$ROOTFS_DIR/home/spark/clone-sparkos.sh"
-
-# Create a simple help script
-cat > "$ROOTFS_DIR/bin/sparkos-help" << 'EOF'
-#!/bin/sh
-cat << 'HELP'
-SparkOS - Minimal Linux Distribution
-====================================
-
-Default Packages:
-  - Kernel (Linux)
-  - Init system (custom)
-  - Busybox (shell and utilities)
-  - Git (for installing spark CLI)
-  - Sudo (privilege elevation)
-
-Default User:
-  Username: spark
-  Home: /home/spark
-  Privileges: Full sudo access (no password required)
-  
-  To run commands as root: sudo <command>
-  To become root: sudo -i
-
-Available commands:
-  ls, cd, pwd      - Navigate filesystem
-  cat, less        - View files
-  mkdir, rm, cp    - File operations
-  mount, umount    - Mount filesystems
-  ip, ifconfig     - Network configuration
-  ping, wget       - Network testing
-  git              - Version control
-  sudo             - Run commands as root
-  poweroff, reboot - System control
-  help             - Show this help
-
-Network:
-  Wired networking (eth0) configured via DHCP
-  DNS: 8.8.8.8, 1.1.1.1 (Google and Cloudflare)
-  To check network: ping 8.8.8.8
-  To test DNS: ping google.com
-
-Next Steps:
-  1. Install spark CLI: ~/clone-sparkos.sh
-  2. Use spark CLI to configure WiFi and system
-  3. Install additional packages as needed
-
-For more information: https://github.com/johndoe6345789/SparkOS
-HELP
-EOF
-
-chmod +x "$ROOTFS_DIR/bin/sparkos-help"
-ln -sf sparkos-help "$ROOTFS_DIR/bin/help"
-
-# Create network initialization script
-cat > "$ROOTFS_DIR/sbin/init-network" << 'EOF'
-#!/bin/sh
-# SparkOS Network Initialization
-# Brings up wired networking for system bootstrap
-
-echo "Initializing network..."
-
-# Bring up loopback
-ip link set lo up 2>/dev/null || ifconfig lo up 2>/dev/null
-
-# Bring up primary wired interface with DHCP
-# Try eth0 first, then other common interface names
-for iface in eth0 enp0s3 enp0s8 ens33; do
-    if ip link show "$iface" >/dev/null 2>&1; then
-        echo "Bringing up $iface..."
-        
-        # Bring up the interface
-        if ip link set "$iface" up 2>/dev/null || ifconfig "$iface" up 2>/dev/null; then
-            # Try to get IP via DHCP using busybox udhcpc
-            if command -v udhcpc >/dev/null 2>&1; then
-                # Run udhcpc in background, it will daemonize itself
-                udhcpc -i "$iface" -b -t 5 2>/dev/null
-            fi
-        else
-            echo "Warning: Failed to bring up $iface"
-        fi
-        break
-    fi
-done
-
-echo "Network initialization complete"
-EOF
-
-chmod +x "$ROOTFS_DIR/sbin/init-network"
-
 # Create README
 cat > "$ROOTFS_DIR/README.txt" << 'EOF'
 SparkOS Root Filesystem
 =======================
 
-This is the root filesystem for SparkOS, a minimal Linux distribution.
+This is the root filesystem for SparkOS, a GUI-only Linux distribution.
 
-Minimal System Packages:
+SparkOS Philosophy:
-  - Linux Kernel (with networking support)
+  - GUI-Only: No CLI tools, no shell, no Unix utilities
-  - SparkOS Init System (custom)
+  - Network-First: Networking integrated into Qt6 GUI
-  - Busybox (shell, utilities, networking)
+  - Direct Kernel Interface: Qt6 communicates directly with Linux kernel
-  - Git (for installing spark CLI)
+  - No Unix Baggage: No users, groups, passwords, or authentication
-  - Sudo (privilege elevation)
+
+Minimal System:
+  - Linux Kernel (with networking and framebuffer support)
+  - SparkOS Init System (completely self-contained, no dependencies)
+  - Qt6 GUI Application (all user interaction)
 
 Directory Structure:
-  /bin, /sbin       - Essential binaries
+  /sbin             - Init binary only
-  /etc              - Configuration files
+  /etc              - Minimal configuration files
   /proc, /sys, /dev - Kernel interfaces
   /tmp              - Temporary files
-  /usr              - User programs
+  /usr              - Qt6 GUI application and libraries
-  /var              - Variable data
+  /var              - Variable data (overlay mount)
   /root             - Root home directory
-  /home/spark       - Default user home directory
-
-Default User:
-  Username: spark (UID 1000)
-  Home: /home/spark
-  Sudo: Full access without password
-  Scripts: ~/clone-sparkos.sh for installing spark CLI
 
 Network Configuration:
-  /etc/network/interfaces - Wired network (DHCP)
+  - Managed entirely through Qt6 GUI
-  /etc/resolv.conf        - DNS configuration (8.8.8.8, 1.1.1.1)
+  - Init brings up interfaces via direct ioctl calls
-  /sbin/init-network      - Network initialization script
+  - DHCP and network management handled by Qt6 NetworkManager
+  - /etc/resolv.conf provides fallback DNS servers
 
-Bootstrap Process:
+Boot Process:
-  1. System boots as 'spark' user with wired networking (DHCP)
+  1. Linux kernel loads
-  2. Run ~/clone-sparkos.sh to install spark CLI
+  2. Init (PID 1) mounts filesystems
-  3. Use spark CLI to configure WiFi and system
+  3. Init brings up network interfaces
-  4. Install additional packages via spark CLI
+  4. Init spawns Qt6 GUI application
-  5. Use 'sudo' for any root-level operations
+  5. All user interaction through GUI
 
-Note: This is a minimal system. You'll need to populate /bin and /usr/bin
+Note: This is a minimal, GUI-only system.
-with actual binaries (busybox, git, sudo) from a proper Linux system
+      No shell, no CLI tools, no busybox.
-or by cross-compiling.
+      All functionality is provided through the Qt6 GUI application.
 EOF
 
 echo ""
 echo "Root filesystem structure created at: $ROOTFS_DIR"
 echo ""
-echo "User configuration:"
+echo "SparkOS Configuration:"
-echo "  - Default user: spark (UID 1000)"
+echo "  - Architecture: GUI-only, no CLI"
-echo "  - Home directory: /home/spark"
+echo "  - Init: Self-contained, no external dependencies"
-echo "  - Sudo access: Enabled (no password required)"
+echo "  - Network: Direct C implementation via ioctl"
-echo "  - Clone script: /home/spark/clone-sparkos.sh"
+echo "  - User Experience: Pure Qt6 GUI"
-echo ""
-echo "Network configuration:"
-echo "  - Wired networking (DHCP) configured for eth0"
-echo "  - DNS: 8.8.8.8, 1.1.1.1, 8.8.4.4, 1.0.0.1"
-echo "  - Network init script: /sbin/init-network"
 echo ""
 echo "Next steps:"
 echo "  1. Build init: make init"
 echo "  2. Install init: make install"
-echo "  3. Copy busybox, git, and sudo binaries to rootfs/bin/"
+echo "  3. Build Qt6 GUI: make gui"
-echo "  4. Create busybox symlinks"
+echo "  4. Create bootable image: sudo make image"
-echo "  5. Create bootable image: sudo make image"
 echo ""
-echo "Minimum required binaries:"
+echo "Philosophy:"
-echo "  - busybox (provides shell, networking, utilities)"
+echo "  No busybox, no shell, no CLI tools"
-echo "  - git (for installing spark CLI)"
+echo "  Everything is GUI-driven through Qt6"
-echo "  - sudo (for privilege elevation)"
-echo ""
-echo "Note: Busybox should be compiled with networking support"
-echo "      (CONFIG_UDHCPC, CONFIG_IFCONFIG, CONFIG_IP, CONFIG_PING, CONFIG_WGET)"

scripts/test.sh

@@ -3,48 +3,6 @@ echo "SparkOS Docker Test Environment"
 echo "================================"
 echo ""
 
-# Verify BusyBox is present and working
-echo "Verifying BusyBox..."
-echo "-------------------"
-if command -v busybox >/dev/null 2>&1; then
-    echo "✓ BusyBox is installed"
-    echo ""
-    echo "BusyBox version:"
-    # Store version for reuse in summary
-    BUSYBOX_VERSION=$(busybox | head -n 1)
-    echo "$BUSYBOX_VERSION"
-    echo ""
-    echo "BusyBox location:"
-    which busybox
-    ls -lh "$(which busybox)"
-    echo ""
-    echo "Shell (/bin/sh) is BusyBox:"
-    ls -lh /bin/sh
-    if [ -L /bin/sh ]; then
-        echo "  → /bin/sh is a symlink to: \"$(readlink /bin/sh)\""
-    fi
-    echo ""
-    echo "Available BusyBox applets (sample):"
-    # Store applet list once to avoid redundant executions
-    APPLET_LIST=$(busybox --list)
-    echo "$APPLET_LIST" | head -n 20
-    echo "  ... and $(echo "$APPLET_LIST" | wc -l) total applets"
-    echo ""
-    echo "Networking applets (required for SparkOS):"
-    for cmd in udhcpc ip ifconfig ping wget; do
-        if echo "$APPLET_LIST" | grep -q "^${cmd}$"; then
-            echo "  ✓ $cmd"
-        else
-            echo "  ✗ $cmd (NOT FOUND)"
-        fi
-    done
-else
-    echo "✗ BusyBox not found!"
-    echo "  SparkOS requires BusyBox for shell and utilities"
-    exit 1
-fi
-
-echo ""
 echo "Verifying SparkOS init binary..."
 echo "--------------------------------"
 if [ -f /sparkos/rootfs/sbin/init ]; then
@@ -75,10 +33,13 @@ echo "✓ SparkOS is ready for testing!"
 echo "================================"
 echo ""
 echo "Summary:"
-echo "  - BusyBox: $BUSYBOX_VERSION"
+echo "  - Init: Custom SparkOS init system (no external dependencies)"
-echo "  - Init: Custom SparkOS init system"
+echo "  - Architecture: GUI-only, no CLI/shell"
-echo "  - Shell: BusyBox sh (/bin/sh)"
+echo "  - Network: Direct C implementation via ioctl"
-echo "  - Networking: BusyBox udhcpc, ip, ping, wget"
+echo "  - Philosophy: Pure GUI experience, network-first"
+echo ""
+echo "Note: SparkOS has no CLI tools (no busybox, no shell)"
+echo "      All functionality is provided through the Qt6 GUI"
 echo ""
 echo "To test the init system:"
-echo "  docker run --rm <image> /sparkos/rootfs/sbin/init --help"
+echo "  docker run --rm <image> /sparkos/rootfs/sbin/init"

src/init.c

@@ -1,6 +1,11 @@
 /*
  * SparkOS Init - Minimal init system for SparkOS
  * This is the first process that runs after the kernel boots
+ * 
+ * SparkOS Philosophy: GUI-only, no CLI, network-first
+ * - No shell spawning or CLI utilities
+ * - Direct boot to Qt6 GUI
+ * - Network initialization via direct C system calls
  */
 
 #include <stdio.h>
@@ -8,9 +13,16 @@
 #include <unistd.h>
 #include <sys/wait.h>
 #include <sys/reboot.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <net/if.h>
+#include <linux/if.h>
 #include <signal.h>
 #include <errno.h>
 #include <string.h>
+#include <arpa/inet.h>
 
 static void signal_handler(int sig) {
     if (sig == SIGCHLD) {
@@ -33,7 +45,7 @@ static void spawn_gui() {
         char *argv[] = {"/usr/bin/sparkos-gui", NULL};
         char *envp[] = {
             "HOME=/root",
-            "PATH=/bin:/sbin:/usr/bin:/usr/sbin",
+            "PATH=/usr/bin:/usr/sbin",
             "QT_QPA_PLATFORM=linuxfb:fb=/dev/fb0",
             "QT_QPA_FB_FORCE_FULLSCREEN=1",
             "QT_QPA_FONTDIR=/usr/share/fonts",
@@ -51,39 +63,122 @@ static void spawn_gui() {
     waitpid(pid, &status, 0);
 }
 
-static void spawn_shell() {
+/*
-    pid_t pid = fork();
+ * Initialize network interface directly via ioctl
+ * No dependency on busybox or CLI tools
+ */
+static int init_network_interface(const char *ifname) {
+    int sock;
+    struct ifreq ifr;
     
-    if (pid < 0) {
+    // Create socket for ioctl operations
-        perror("fork failed");
+    sock = socket(AF_INET, SOCK_DGRAM, 0);
-        return;
+    if (sock < 0) {
+        perror("socket creation failed");
+        return -1;
     }
     
-    if (pid == 0) {
+    // Prepare interface request structure
-        // Child process - exec shell as root (fallback only)
+    memset(&ifr, 0, sizeof(ifr));
-        
+    strncpy(ifr.ifr_name, ifname, IFNAMSIZ - 1);
-        char *argv[] = {"/bin/sh", "-l", NULL};
+    
-        char *envp[] = {
+    // Get current flags
-            "HOME=/root",
+    if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
-            "PATH=/bin:/sbin:/usr/bin:/usr/sbin",
+        close(sock);
-            "TERM=linux",
+        return -1;  // Interface doesn't exist
-            "PS1=SparkOS# ",
-            NULL
-        };
-        
-        execve("/bin/sh", argv, envp);
-        
-        perror("failed to exec shell");
-        exit(1);
     }
     
-    // Parent process - wait for shell to exit
+    // Bring interface up
-    int status;
+    ifr.ifr_flags |= IFF_UP | IFF_RUNNING;
-    waitpid(pid, &status, 0);
+    if (ioctl(sock, SIOCSIFFLAGS, &ifr) < 0) {
+        perror("failed to bring up interface");
+        close(sock);
+        return -1;
+    }
+    
+    close(sock);
+    printf("Network interface %s brought up successfully\n", ifname);
+    return 0;
+}
+
+/*
+ * Initialize networking without external dependencies
+ * Brings up loopback and first available ethernet interface
+ */
+static void init_network() {
+    const char *interfaces[] = {"lo", "eth0", "enp0s3", "enp0s8", "ens33", NULL};
+    int i;
+    int eth_initialized = 0;
+    
+    printf("Initializing network interfaces...\n");
+    
+    // Bring up loopback
+    if (init_network_interface("lo") == 0) {
+        printf("Loopback interface initialized\n");
+    }
+    
+    // Try to bring up first available ethernet interface
+    for (i = 1; interfaces[i] != NULL && !eth_initialized; i++) {
+        if (init_network_interface(interfaces[i]) == 0) {
+            printf("Primary network interface %s initialized\n", interfaces[i]);
+            printf("Note: DHCP configuration should be handled by Qt6 GUI\n");
+            eth_initialized = 1;
+        }
+    }
+    
+    if (!eth_initialized) {
+        fprintf(stderr, "Warning: No ethernet interface found or initialized\n");
+        fprintf(stderr, "Network configuration will be available through GUI\n");
+    }
+}
+
+/*
+ * Mount filesystem using direct mount() system call
+ * No dependency on mount binary
+ */
+static int mount_fs(const char *source, const char *target, const char *fstype, unsigned long flags) {
+    if (mount(source, target, fstype, flags, NULL) < 0) {
+        return -1;
+    }
+    return 0;
+}
+
+/*
+ * Create directory recursively
+ * No dependency on mkdir binary
+ */
+static int mkdir_p(const char *path) {
+    char tmp[256];
+    char *p = NULL;
+    size_t len;
+    
+    snprintf(tmp, sizeof(tmp), "%s", path);
+    len = strlen(tmp);
+    if (tmp[len - 1] == '/')
+        tmp[len - 1] = 0;
+    
+    for (p = tmp + 1; *p; p++) {
+        if (*p == '/') {
+            *p = 0;
+            if (mkdir(tmp, 0755) < 0 && errno != EEXIST) {
+                return -1;
+            }
+            *p = '/';
+        }
+    }
+    
+    if (mkdir(tmp, 0755) < 0 && errno != EEXIST) {
+        return -1;
+    }
+    
+    return 0;
 }
 
 int main(int argc, char *argv[]) {
     printf("SparkOS Init System Starting...\n");
+    printf("================================\n");
+    printf("Philosophy: GUI-Only, No CLI, Network-First\n");
+    printf("================================\n\n");
     
     // Make sure we're PID 1
     if (getpid() != 1) {
@@ -94,18 +189,18 @@ int main(int argc, char *argv[]) {
     // Set up signal handlers
     signal(SIGCHLD, signal_handler);
     
-    // Mount essential filesystems
+    // Mount essential filesystems using direct system calls
     printf("Mounting essential filesystems...\n");
-    if (system("mount -t proc proc /proc 2>/dev/null") != 0) {
+    if (mount_fs("proc", "/proc", "proc", 0) != 0) {
         fprintf(stderr, "Warning: Failed to mount /proc\n");
     }
-    if (system("mount -t sysfs sys /sys 2>/dev/null") != 0) {
+    if (mount_fs("sysfs", "/sys", "sysfs", 0) != 0) {
         fprintf(stderr, "Warning: Failed to mount /sys\n");
     }
-    if (system("mount -t devtmpfs dev /dev 2>/dev/null") != 0) {
+    if (mount_fs("devtmpfs", "/dev", "devtmpfs", 0) != 0) {
         fprintf(stderr, "Warning: Failed to mount /dev\n");
     }
-    if (system("mount -t tmpfs tmpfs /tmp 2>/dev/null") != 0) {
+    if (mount_fs("tmpfs", "/tmp", "tmpfs", 0) != 0) {
         fprintf(stderr, "Warning: Failed to mount /tmp\n");
     }
     
@@ -113,37 +208,38 @@ int main(int argc, char *argv[]) {
     printf("Setting up overlay filesystem for writable layer...\n");
     
     // Create overlay directories in tmpfs
-    if (system("mkdir -p /tmp/overlay/var-upper /tmp/overlay/var-work 2>/dev/null") != 0) {
+    if (mkdir_p("/tmp/overlay/var-upper") != 0 || mkdir_p("/tmp/overlay/var-work") != 0) {
         fprintf(stderr, "Warning: Failed to create overlay directories for /var\n");
     }
     
     // Mount overlay on /var for logs and runtime data
-    if (system("mount -t overlay overlay -o lowerdir=/var,upperdir=/tmp/overlay/var-upper,workdir=/tmp/overlay/var-work /var 2>/dev/null") != 0) {
+    char overlay_opts[256];
+    snprintf(overlay_opts, sizeof(overlay_opts), 
+             "lowerdir=/var,upperdir=/tmp/overlay/var-upper,workdir=/tmp/overlay/var-work");
+    if (mount("overlay", "/var", "overlay", 0, overlay_opts) != 0) {
         fprintf(stderr, "Warning: Failed to mount overlay on /var - system may be read-only\n");
     } else {
         printf("Overlay filesystem mounted on /var (base OS is immutable)\n");
     }
     
     // Mount tmpfs on /run for runtime data
-    if (system("mkdir -p /run 2>/dev/null") == 0) {
+    if (mkdir_p("/run") == 0) {
-        if (system("mount -t tmpfs tmpfs /run 2>/dev/null") != 0) {
+        if (mount_fs("tmpfs", "/run", "tmpfs", 0) != 0) {
             fprintf(stderr, "Warning: Failed to mount /run\n");
         }
     }
     
-    // Initialize network (wired only for bootstrap)
+    // Initialize network interfaces
-    printf("Initializing wired network...\n");
+    init_network();
-    if (system("/sbin/init-network 2>/dev/null") != 0) {
-        fprintf(stderr, "Warning: Network initialization failed - check network interface availability\n");
-    }
     
-    printf("Starting Qt6 GUI application...\n");
+    printf("\nStarting Qt6 GUI application...\n");
     printf("Welcome to SparkOS!\n");
     printf("===================\n");
     printf("Base OS: Read-only (immutable)\n");
     printf("Writable: /tmp, /var (overlay), /run\n");
     printf("Mode: Qt6 GUI (Network-First Architecture)\n");
-    printf("No Users/Authentication - Direct Boot to GUI\n\n");
+    printf("No Users/Authentication - Direct Boot to GUI\n");
+    printf("No CLI/Shell - Pure GUI Experience\n\n");
     
     // Main loop - keep respawning GUI application
     while (1) {