int hook_init(void) {
int i;
SYMSEARCH_BIND_FUNCTION_TO(dsifix, kallsyms_lookup_name, pkallsyms_lookup_name);
SYMSEARCH_BIND_FUNCTION_TO(dsifix, kallsyms_lookup, pkallsyms_lookup);
lock_kernel();
for (i = 0; g_hi[i].newfunc; ++i) {
hook(&g_hi[i]);
}
unlock_kernel();
return 0;
}
static int proc_reg_val_write(struct file *filp, const char __user *buffer, unsigned long len, void *data) {
uint32_t newval=0;
int ret;
unsigned short val=0;
st_logcap_reg* reg = data;
if (!len || len >= sizeof(buf))
return -ENOSPC;
if (copy_from_user(buf, buffer, len))
return -EFAULT;
buf[len] = 0;
if (sscanf(buf, "0x%x", (uint32_t *) &newval) > 0) {
printk(KERN_INFO TAG": mask=0x%x newval=0x%x res=0x%x\n", reg->mask_wr, newval, reg->mask_wr & newval);
newval &= reg->mask_wr;
val = (unsigned short) newval;
if (reg->reg && hooked) {
SYMSEARCH_BIND_FUNCTION_TO(logcap, cpcap_direct_misc_write, _cpcap_direct_misc_write);
ret = _cpcap_direct_misc_write(reg->reg, val, reg->mask_wr);
if (ret < 0) {
printk(KERN_ERR TAG": cpcap_direct_misc_write error %d !\n", ret);
}
}
printk(KERN_INFO TAG": checked val=0x%x\n", val);
} else
printk(KERN_ERR TAG": wrong parameter, missing hexa prefix (0x....) !\n");
return len;
}
static int ion_put_task_struct(struct task_struct *tsk)
{
printk(KERN_DEBUG "__put_task_struct = %p\n", ___put_task_struct);
SYMSEARCH_BIND_FUNCTION_TO(ion, __put_task_struct, ___put_task_struct);
//SYMSEARCH_BIND_FUNCTION_TO(ion, exit_creds, _exit_creds);
printk(KERN_DEBUG "__put_task_struct = %p\n", ___put_task_struct);
if (atomic_dec_and_test(&tsk->usage)) {
___put_task_struct(tsk);
//WARN_ON(!tsk->exit_state);
//WARN_ON(atomic_read(&tsk->usage));
//exit_creds(tsk);
}
return 0;
}
