feat: add userspace system logging, rename klog to syslog, rename relevant syscalls and API functions

programs/src/desktop/apps/app_external_launchers.cpp

@@ -27,9 +27,9 @@ void open_texteditor(DesktopState* ds) {
     spawn_app("0:/apps/texteditor/texteditor.elf");
 }
 
-void open_klog(DesktopState* ds) {
+void open_syslog(DesktopState* ds) {
     (void)ds;
-    spawn_app("0:/apps/klog/klog.elf");
+    spawn_app("0:/apps/klog/syslog.elf");
 }
 
 void open_wordprocessor(DesktopState* ds) {

programs/src/desktop/apps/apps_common.hpp

@@ -249,7 +249,7 @@ void open_system_configuration(DesktopState* ds);
 void ensure_filemanager_icons_loaded(DesktopState* ds);
 void open_calculator(DesktopState* ds);
 void open_texteditor(DesktopState* ds);
-void open_klog(DesktopState* ds);
+void open_syslog(DesktopState* ds);
 void open_settings(DesktopState* ds);
 void open_user_manager(DesktopState* ds);
 void open_reboot_dialog(DesktopState* ds);

programs/src/desktop/input.cpp

@@ -897,7 +897,7 @@ void gui::desktop_handle_keyboard(DesktopState* ds, const montauk::abi::KeyEvent
             return;
         }
         if (routed_key.ascii == 'k' || routed_key.ascii == 'K') {
-            open_klog(ds);
+            open_syslog(ds);
             return;
         }
     }

programs/src/init/main.cpp

@@ -21,6 +21,15 @@
 #define C_CYAN    "\033[36m"
 #define C_WHITE   "\033[37m"
 
+// ---- Process scan ----
+
+static bool system_already_initialized() {
+    /* A valid init will always be PID 0 */
+
+    if (montauk::getpid() != 0) return true;
+    return false;
+}
+
 // ---- Logging ----
 
 static void log_timestamp(char* buf, int size) {
@@ -39,16 +48,16 @@ static void log(LogLevel level, const char* msg) {
     const char* tag;
     const char* color;
     switch (level) {
-    case LOG_OK:   tag = "  OK  "; color = C_GREEN;  break;
-    case LOG_INFO: tag = " INFO "; color = C_CYAN;   break;
-    case LOG_WARN: tag = " WARN "; color = C_YELLOW; break;
-    case LOG_ERR:  tag = " FAIL "; color = C_RED;    break;
+    case LOG_OK:   tag = "OK:"; color = C_GREEN;  break;
+    case LOG_INFO: tag = "INFO:"; color = C_CYAN;   break;
+    case LOG_WARN: tag = "WARN:"; color = C_YELLOW; break;
+    case LOG_ERR:  tag = "FAIL:"; color = C_RED;    break;
     }
 
     snprintf(line, sizeof(line),
-        C_DIM "%s" C_RESET "  %s%s" C_RESET "  " C_BOLD "init" C_RESET "  %s\n",
+        C_DIM "%s" C_RESET " %s%s" C_RESET " %s",
         ts, color, tag, msg);
-    montauk::print(line);
+    montauk::write_log("init", line);
 }
 
 static void log_ok(const char* msg)   { log(LOG_OK, msg); }
@@ -178,11 +187,27 @@ static bool run_configured_service(const montauk::toml::Doc& doc,
     return run_configured_service(doc, fallback_service, fallback_depth + 1);
 }
 
+const char* getReleaseString(char* buffer, int n) {
+    montauk::abi::SysInfo info;
+    montauk::get_info(&info);
+
+    snprintf(buffer, n, "The Montauk Operating System, version %s (build %u)",
+        info.osVersion, info.buildNumber);
+
+    return buffer;
+}
+
 // ---- Main ----
 
 extern "C" void _start() {
+    if (system_already_initialized()) {
+        montauk::exit(1);
+    }
 
-    log_info("The Montauk Operating System");
+    char releaseString[128] = "";
+    getReleaseString(releaseString, 128);
+
+    log_info(releaseString);
 
     auto config = montauk::config::load("init");
     int discovered = 0;

programs/src/logtest/main.cpp

@@ -0,0 +1,8 @@
+#include <montauk/syscall.h> 
+
+extern "C" void _start() {
+
+    montauk::write_log("testapp", "hello, logging world!");
+
+    montauk::exit(0);
+}

programs/src/syslog/Makefile

@@ -1,4 +1,4 @@
-# Makefile for klog (standalone Window Server app) on MontaukOS
+# Makefile for syslog (standalone Window Server app) on MontaukOS
 # Copyright (c) 2026 Daniel Hammer
 
 MAKEFLAGS += -rR
@@ -45,14 +45,14 @@ SRCS := main.cpp stb_truetype_impl.cpp font_data.cpp
 OBJS := $(addprefix $(OBJDIR)/,$(SRCS:.cpp=.o))
 DEPS := $(OBJS:.o=.d)
 
-TARGET := $(BINDIR)/apps/klog/klog.elf
+TARGET := $(BINDIR)/apps/syslog/syslog.elf
 
 .PHONY: all clean
 
 all: $(TARGET)
 
 $(TARGET): $(OBJS) $(LINK_LD) Makefile $(LIBDIR)/libc/liblibc.a
-	mkdir -p $(BINDIR)/apps/klog
+	mkdir -p $(BINDIR)/apps/syslog
 	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(LIBDIR)/libc/liblibc.a -o $@
 
 $(OBJDIR)/%.o: %.cpp Makefile

programs/src/syslog/main.cpp

@@ -68,7 +68,7 @@ static bool klog_poll() {
     if (now - g_klog.last_poll_ms < KLOG_POLL_MS) return false;
     g_klog.last_poll_ms = now;
 
-    int n = (int)montauk::read_klog(g_klog.klog_buf, KLOG_READ_SIZE);
+    int n = (int)montauk::read_log(g_klog.klog_buf, KLOG_READ_SIZE);
     if (n <= 0 && g_klog.last_len <= 0) return false;
 
     if (n > g_klog.last_len) {
@@ -157,7 +157,7 @@ extern "C" void _start() {
     if (!fonts::init())
         montauk::exit(1);
 
-    if (!g_win.create("Kernel Log", INIT_W, INIT_H))
+    if (!g_win.create("System Log", INIT_W, INIT_H))
         montauk::exit(1);
 
     int cols = g_win.width / mono_cell_width();
@@ -180,7 +180,7 @@ extern "C" void _start() {
 
     g_klog.last_pixels = g_win.pixels;
 
-    int n = (int)montauk::read_klog(g_klog.klog_buf, KLOG_READ_SIZE);
+    int n = (int)montauk::read_log(g_klog.klog_buf, KLOG_READ_SIZE);
     if (n > 0) {
         klog_refeed(n);
         g_klog.last_len = n;

programs/src/syslog/manifest.toml

@@ -1,6 +1,6 @@
 [app]
-name = "Kernel Log"
-binary = "klog.elf"
+name = "System Log"
+binary = "syslog.elf"
 icon = "utilities-terminal.svg"
 
 [menu]