3fault.patch

# cat /mnt/reaver/mnt/data/old/3fault.patch
diff -ruN linux-2.6.13.4/arch/i386/Kconfig.debug linux-2.6.13.4-b/arch/i386/Kconfig.debug
--- linux-2.6.13.4/arch/i386/Kconfig.debug	2005-10-10 20:54:29.000000000 +0200
+++ linux-2.6.13.4-b/arch/i386/Kconfig.debug	2005-11-02 11:25:49.000000000 +0100
@@ -71,5 +71,17 @@
 	bool
 	depends on X86_LOCAL_APIC && !X86_VISWS
 	default y
+	
+config X86_TRIPPLEFAULT
+	tristate "Turn on /proc/tripplefault"
+	depends on m && X86_PC && MODULES
+	default m
+	help
+	    beware of using this! use this only if you really
+	    know what are you fuckin' doing
+	    
+	    AVAILABLE ONLY AS MODULE
+	    
+	    module will be named 3fault.ko
 
 endmenu
diff -ruN linux-2.6.13.4/arch/i386/kernel/Makefile linux-2.6.13.4-b/arch/i386/kernel/Makefile
--- linux-2.6.13.4/arch/i386/kernel/Makefile	2005-10-10 20:54:29.000000000 +0200
+++ linux-2.6.13.4-b/arch/i386/kernel/Makefile	2005-11-02 11:24:33.000000000 +0100
@@ -34,6 +34,7 @@
 obj-$(CONFIG_HPET_TIMER) 	+= time_hpet.o
 obj-$(CONFIG_EFI) 		+= efi.o efi_stub.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
+obj-$(CONFIG_X86_TRIPPLEFAULT)	+= 3fault.o
 
 EXTRA_AFLAGS   := -traditional
 
diff -ruN linux-2.6.13.4/arch/i386/kernel/3fault.c linux-2.6.13.4-b/arch/i386/kernel/3fault.c
--- linux-2.6.13.4/arch/i386/kernel/3fault.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.13.4-b/arch/i386/kernel/3fault.c	2005-11-02 10:27:25.000000000 +0100
@@ -0,0 +1,88 @@
+#include <linux/module.h>	/* Needed by all modules */
+#include <linux/kernel.h>	/* Needed for KERN_INFO */
+#include <asm/mc146818rtc.h>
+#include <asm/pgtable.h>
+#include <linux/efi.h>
+#include <linux/proc_fs.h>	/* Necessary because we use the proc fs */
+#define procfs_name "tripplefault"
+
+
+static unsigned long long
+real_mode_gdt_entries [3] =
+{
+        0x0000000000000000ULL,  /* Null descriptor */
+        0x00009a000000ffffULL,  /* 16-bit real-mode 64k code at 0x00000000 */
+        0x000092000100ffffULL   /* 16-bit real-mode 64k data at 0x00000100 */
+};
+
+static struct
+{
+        unsigned short       size __attribute__ ((packed));
+        unsigned long long * base __attribute__ ((packed));
+}
+real_mode_gdt = { sizeof (real_mode_gdt_entries) - 1, real_mode_gdt_entries },
+real_mode_idt = { 0x3ff, NULL },
+no_idt = { 0, NULL };
+
+int
+procfile_read(char *buffer,
+	      char **buffer_location,
+	      off_t offset, int buffer_length, int *eof, void *data)
+{
+	int ret;
+	
+	if (offset > 0) {
+		/* we have finished to read, return 0 */
+		ret  = 0;
+	} else {
+		/* fill the buffer, return the buffer size */
+		ret = sprintf(buffer, "Beware of writing here!\n");
+	}
+
+	return ret;
+}
+
+int procfile_write(struct file *file, const char *buffer, unsigned long count,
+		   void *data)
+{
+	__asm__ __volatile__("lidt %0": :"m" (no_idt));
+	__asm__ __volatile__("int3");
+	
+	return 0;
+}
+
+
+static struct proc_dir_entry *Our_Proc_File;
+
+int init_module(void)
+{
+
+	Our_Proc_File = create_proc_entry(procfs_name, 0644, NULL);
+	
+	if (Our_Proc_File == NULL) {
+		remove_proc_entry(procfs_name, &proc_root);
+		printk(KERN_ALERT "Error: Could not initialize /proc/%s\n",
+		       procfs_name);
+		return -ENOMEM;
+	}
+
+	Our_Proc_File->read_proc = procfile_read;
+	Our_Proc_File->write_proc = procfile_write;
+	Our_Proc_File->owner 	 = THIS_MODULE;
+	Our_Proc_File->mode 	 = S_IFREG | S_IRUGO;
+	Our_Proc_File->uid 	 = 0;
+	Our_Proc_File->gid 	 = 0;
+	Our_Proc_File->size 	 = 24;
+
+	printk(KERN_INFO "/proc/%s created\n", procfs_name);
+	printk(KERN_INFO "1337 nx tripple fault module loaded! beware!\n");
+	return 0;
+}
+
+
+void cleanup_module(void)
+{
+	remove_proc_entry(procfs_name, &proc_root);
+	printk(KERN_INFO "/proc/%s removed\n", procfs_name);
+	printk(KERN_INFO "your system is safe now ;)\n");
+}