// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2017 James.Bottomley@HansenPartnership.com
 */
#include <linux/slab.h>
#include "tpm-dev.h"

struct tpmrm_priv {
        struct file_priv priv;
        struct tpm_space space;
};

static int tpmrm_open(struct inode *inode, struct file *file)
{
        struct tpm_chip *chip;
        struct tpmrm_priv *priv;
        int rc;

        chip = container_of(inode->i_cdev, struct tpm_chip, cdevs);
        priv = kzalloc_obj(*priv);
        if (priv == NULL)
                return -ENOMEM;

        rc = tpm2_init_space(&priv->space, TPM2_SPACE_BUFFER_SIZE);
        if (rc) {
                kfree(priv);
                return -ENOMEM;
        }

        tpm_common_open(file, chip, &priv->priv, &priv->space);

        return 0;
}

static int tpmrm_release(struct inode *inode, struct file *file)
{
        struct file_priv *fpriv = file->private_data;
        struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv);

        tpm_common_release(file, fpriv);
        tpm2_del_space(fpriv->chip, &priv->space);
        kfree(priv);

        return 0;
}

const struct file_operations tpmrm_fops = {
        .owner = THIS_MODULE,
        .open = tpmrm_open,
        .read = tpm_common_read,
        .write = tpm_common_write,
        .poll = tpm_common_poll,
        .release = tpmrm_release,
};