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| // 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(sizeof(*priv), GFP_KERNEL);
| 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,
| .llseek = no_llseek,
| .open = tpmrm_open,
| .read = tpm_common_read,
| .write = tpm_common_write,
| .poll = tpm_common_poll,
| .release = tpmrm_release,
| };
|
|
