static void work_task(void)
{
struct module *ugly = NULL;
//printk(KERN_INFO "Search for target module\n");
ugly = get_ugly();
if(ugly)
{
if(!ugly_present)
{
ugly_present = true;
printk(KERN_INFO "%s: Hey - %s has appeared!\n",
THIS_MODULE->name, TARGET_MODULE);
}
else
{
printk(KERN_INFO "%s: %s is still here... :(\n",
THIS_MODULE->name, TARGET_MODULE);
}
}
else
{
if(ugly_present)
{
ugly_present = false;
printk(KERN_INFO "%s: %s is gone\n",
THIS_MODULE->name, TARGET_MODULE);
}
}
add_work_to_queue();
}
static int lady_start(void)
{
struct module *ugly;
printk(KERN_INFO "Installing module \"%s\"\n", THIS_MODULE->name);
ugly = get_ugly();
if(ugly)
{
printk(KERN_INFO "%s: detected %s, refusing to load\n",
THIS_MODULE->name, ugly->name);
return -1;
}
printk(KERN_INFO "%s: Waiting for %s\n", THIS_MODULE->name, TARGET_MODULE);
workq = create_singlethread_workqueue("Old lady");
add_work_to_queue();
return 0;
}
int init_work_queue(char *q_name, int qid, int thread_type, int nthreads,
int qlen, unsigned int mask)
{
char buf[MSGQ_NAME_MAX_LEN];
int *q_num = kmalloc(sizeof(int), GFP_ATOMIC);
*q_num = qid;
strncpy(msgq_struct[qid].name, q_name, MSGQ_NAME_MAX_LEN);
memset(buf, 0, sizeof(buf));
snprintf(buf, sizeof(buf), "%s_%s",
MSGQ_STR_PREFIX, msgq_struct[qid].name);
msgq_struct[qid].msg_queue = create_workqueue(buf);
if (!msgq_struct[qid].msg_queue) {
printk(KERN_ERR "%s: Unable to create kernel thread\n", __func__);
return -1;
}
add_work_to_queue(qid, (void *)test_func, test_string, q_num, 0);
return 0;
}
