C++ (Cpp) au_rdu_ino 예제들

예제 #1

파일: rdu.c 프로젝트: AKToronto/htc-kernel-msm7227

long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	long err, e;
	struct aufs_rdu rdu;
	void __user *p = compat_ptr(arg);

	/* todo: get_user()? */
	err = copy_from_user(&rdu, p, sizeof(rdu));
	if (unlikely(err)) {
		err = -EFAULT;
		AuTraceErr(err);
		goto out;
	}
	rdu.ent.e = compat_ptr(rdu.ent.ul);
	err = au_rdu_verify(&rdu);
	if (unlikely(err))
		goto out;

	switch (cmd) {
	case AUFS_CTL_RDU:
		err = au_rdu(file, &rdu);
		if (unlikely(err))
			break;

		rdu.ent.ul = ptr_to_compat(rdu.ent.e);
		rdu.tail.ul = ptr_to_compat(rdu.tail.e);
		e = copy_to_user(p, &rdu, sizeof(rdu));
		if (unlikely(e)) {
			err = -EFAULT;
			AuTraceErr(err);
		}
		break;
	case AUFS_CTL_RDU_INO:
		err = au_rdu_ino(file, &rdu);
		break;

	default:
		/* err = -ENOTTY; */
		err = -EINVAL;
	}

out:
	AuTraceErr(err);
	return err;
}

예제 #2

파일: rdu.c 프로젝트: chrmorais/miniemc2

long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	long err, e;
	struct aufs_rdu rdu;
	void __user *p = (void __user *)arg;

	err = copy_from_user(&rdu, p, sizeof(rdu));
	if (unlikely(err)) {
		err = -EFAULT;
		AuTraceErr(err);
		goto out;
	}
	err = au_rdu_verify(&rdu);
	if (unlikely(err))
		goto out;

	switch (cmd) {
	case AUFS_CTL_RDU:
		err = au_rdu(file, &rdu);
		if (unlikely(err))
			break;

		e = copy_to_user(p, &rdu, sizeof(rdu));
		if (unlikely(e)) {
			err = -EFAULT;
			AuTraceErr(err);
		}
		break;
	case AUFS_CTL_RDU_INO:
		err = au_rdu_ino(file, &rdu);
		break;

	default:
		/* err = -ENOTTY; */
		err = -EINVAL;
	}

 out:
	AuTraceErr(err);
	return err;
}