static int ktap_lib_exit(ktap_state *ks)
{
kp_exit(ks);
/* do not execute bytecode any more in this thread */
return -1;
}
/* Ktap Main Entry */
static int ktap_main(struct file *file, struct ktap_user_parm *uparm_ptr)
{
unsigned long *buff = NULL;
ktap_State *ks;
Closure *cl;
int argc;
char **argv, *argstr;
int ret;
argstr = kmalloc(uparm_ptr->arglen, GFP_KERNEL);
if (!argstr)
return -ENOMEM;
ret = copy_from_user(argstr, (void __user *)uparm_ptr->argstr,
uparm_ptr->arglen);
if (ret < 0) {
kfree(argstr);
return -EFAULT;
}
argv = argv_split(GFP_KERNEL, argstr, &argc);
if (!argv) {
kfree(argstr);
pr_err("out of memory");
return -ENOMEM;
}
kfree(argstr);
ret = load_trunk(uparm_ptr, &buff);
if (ret) {
pr_err("cannot load file %s\n", argv[0]);
argv_free(argv);
return ret;
}
ks = kp_newstate((ktap_State **)&file->private_data, argc, argv);
argv_free(argv);
if (unlikely(!ks)) {
vfree(buff);
return -ENOEXEC;
}
cl = kp_load(ks, (unsigned char *)buff);
vfree(buff);
if (cl) {
/* optimize bytecode before excuting */
kp_optimize_code(ks, 0, cl->l.p);
kp_call(ks, ks->top - 1, 0);
}
kp_exit(ks);
return 0;
}
static int ktap_lib_exit(ktap_State *ks)
{
kp_exit(ks);
return 0;
}
