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/*
* Loadable driver which provides the ability to generate a kernel
* protection fault. Mainly useful for testing the address translation
* capabilities of klogd.
*
* Fri Oct 27 14:34:27 CDT 1995: Dr. Wettstein
*
* Initial version.
*/
#define NEW_MODULES
/* Kernel includes. */
#include <linux/kernel.h>
#include <linux/config.h>
#include <linux/errno.h>
#include <linux/fs.h>
/* Standard module stuff. */
#if defined(NEW_MODULES)
#include <linux/module.h>
#else
#include <linux/module.h>
#include <linux/version.h>
char kernel_version[] = UTS_RELEASE;
#endif
static int major = 32;
#ifdef MODULE
static int oops_ioctl(struct inode *, struct file *, unsigned int cmd, unsigned long arg);
static int oops_open(struct inode * node, struct file * file);
static void oops(void);
static struct symbol_table these_symbols = {
#include <linux/symtab_begin.h>
X(oops_open),
X(oops_ioctl),
X(oops),
#include <linux/symtab_end.h>
};
/* driver specific module definitions */
static struct file_operations oops_fops1 = {
NULL, /* hw_lseek */
NULL, /* hw_read */
NULL, /* write */
NULL, /* hw_readdir */
NULL, /* hw_select */
oops_ioctl, /* hw_ioctl */
NULL, /* mmap */
oops_open, /* hw_open */
NULL, /* hw_release */
NULL /* fsync */
};
static int oops_open(struct inode * node, struct file * file)
{
printk("Called oops_open.\n");
return(0);
}
static int oops_ioctl(struct inode * node, struct file * file, \
unsigned int cmd, unsigned long arg)
{
printk("Called oops_ioctl.\n");
printk("Cmd: %d, Arg: %ld\n", cmd, arg);
if ( cmd == 1 )
{
oops();
}
return(0);
}
static void oops()
{
auto unsigned long *p = (unsigned long *) 828282828;
*p = 5;
return;
}
int
init_module(void)
{
printk("oops: Module initilization.\n");
if (register_chrdev(major, "oops", &oops_fops1)) {
printk("register_chrdev failed.");
return -EIO;
}
printk("oops: Registering symbols.\n");
register_symtab(&these_symbols);
return 0;
}
void
cleanup_module(void)
{
/* driver specific cleanups, ususally "unregister_*()" */
printk("oops: Module unloadeding.\n");
if (unregister_chrdev(major, "oops") != 0)
printk("cleanup_module failed\n");
else
printk("cleanup_module succeeded\n");
return;
}
#endif /* MODULE */
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