static ssize_t punc_store()

in speakup/kobjects.c [499:541]

• 35 lines of code
• 8 McCabe index (conditional complexity)

static ssize_t punc_store(struct kobject *kobj, struct kobj_attribute *attr,
			  const char *buf, size_t count)
{
	int x;
	struct st_var_header *p_header;
	struct punc_var_t *var;
	char punc_buf[100];
	unsigned long flags;

	x = strlen(buf);
	if (x < 1 || x > 99)
		return -EINVAL;

	p_header = spk_var_header_by_name(attr->attr.name);
	if (!p_header) {
		pr_warn("p_header is null, attr->attr.name is %s\n",
			attr->attr.name);
		return -EINVAL;
	}

	var = spk_get_punc_var(p_header->var_id);
	if (!var) {
		pr_warn("var is null, p_header->var_id is %i\n",
			p_header->var_id);
		return -EINVAL;
	}

	memcpy(punc_buf, buf, x);

	while (x && punc_buf[x - 1] == '\n')
		x--;
	punc_buf[x] = '\0';

	spin_lock_irqsave(&speakup_info.spinlock, flags);

	if (*punc_buf == 'd' || *punc_buf == 'r')
		x = spk_set_mask_bits(NULL, var->value, 3);
	else
		x = spk_set_mask_bits(punc_buf, var->value, 3);

	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
	return count;
}