kernel: Add halt()

5 files changed, 60 insertions, 0 deletions

diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt
index 47b1ac2..ca8dc85 100644
--- a/kernel/CMakeLists.txt
+++ b/kernel/CMakeLists.txt
@@ -5,6 +5,7 @@ set(KERNEL_SRC
   boot/init/boot.s
 
   kernel/kernel.c
+  kernel/halt.c
   kernel/stack_smashing_protector/stack_smashing_protector.c
 
   drivers/vga_text_buffer/vga_text_buffer.c
diff --git a/kernel/include/kernel/halt.h b/kernel/include/kernel/halt.h
new file mode 100644
index 0000000..5735a06
--- /dev/null
+++ b/kernel/include/kernel/halt.h
@@ -0,0 +1,24 @@
+/*
+ * CMOS
+ * Copyright (C) 2024 Raghuram Subramani <raghus2247@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __kernel_halt_h
+#define __kernel_halt_h
+
+void halt(void);
+
+#endif
diff --git a/kernel/kernel/halt.c b/kernel/kernel/halt.c
new file mode 100644
index 0000000..894ee8a
--- /dev/null
+++ b/kernel/kernel/halt.c
@@ -0,0 +1,30 @@
+/*
+ * CMOS
+ * Copyright (C) 2024 Raghuram Subramani <raghus2247@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libk/io.h>
+
+#include <kernel/halt.h>
+
+void
+halt(void)
+{
+  printk("kernel: halted.");
+
+  for (;;)
+    ;
+}
diff --git a/kernel/kernel/stack_smashing_protector/stack_smashing_protector.c b/kernel/kernel/stack_smashing_protector/stack_smashing_protector.c
index 92612de..3cff7dc 100644
--- a/kernel/kernel/stack_smashing_protector/stack_smashing_protector.c
+++ b/kernel/kernel/stack_smashing_protector/stack_smashing_protector.c
@@ -1,6 +1,9 @@
 #include <stdint.h>
+
 #include <libk/io.h>
 
+#include <kernel/halt.h>
+
 /* TODO: Randomize */
 #define STACK_CHK_GUARD 0xe2dee396
 
@@ -11,4 +14,5 @@ __stack_chk_fail(void)
 {
   /* TODO: Panic the kernel */
   printk("SSP: Stack smashing detected!\n");
+  halt();
 }
diff --git a/kernel/libk/printk.c b/kernel/libk/printk.c
index 9773e6b..f3a5085 100644
--- a/kernel/libk/printk.c
+++ b/kernel/libk/printk.c
@@ -17,6 +17,7 @@
  */
 
 #include <drivers/vga_text_buffer.h>
+
 #include <libk/io.h>
 
 void