1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (C) 2017 James.Bottomley@HansenPartnership.com
 
 
 4 */
 5#include <linux/slab.h>
 6#include "tpm-dev.h"
 7
 8struct tpmrm_priv {
 9	struct file_priv priv;
10	struct tpm_space space;
11};
12
13static int tpmrm_open(struct inode *inode, struct file *file)
14{
15	struct tpm_chip *chip;
16	struct tpmrm_priv *priv;
17	int rc;
18
19	chip = container_of(inode->i_cdev, struct tpm_chip, cdevs);
20	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
21	if (priv == NULL)
22		return -ENOMEM;
23
24	rc = tpm2_init_space(&priv->space, TPM2_SPACE_BUFFER_SIZE);
25	if (rc) {
26		kfree(priv);
27		return -ENOMEM;
28	}
29
30	tpm_common_open(file, chip, &priv->priv, &priv->space);
31
32	return 0;
33}
34
35static int tpmrm_release(struct inode *inode, struct file *file)
36{
37	struct file_priv *fpriv = file->private_data;
38	struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv);
39
40	tpm_common_release(file, fpriv);
41	tpm2_del_space(fpriv->chip, &priv->space);
42	kfree(priv);
43
44	return 0;
45}
46
 
 
 
 
 
 
 
 
 
47const struct file_operations tpmrm_fops = {
48	.owner = THIS_MODULE,
49	.llseek = no_llseek,
50	.open = tpmrm_open,
51	.read = tpm_common_read,
52	.write = tpm_common_write,
53	.poll = tpm_common_poll,
54	.release = tpmrm_release,
55};

 
 1/*
 2 * Copyright (C) 2017 James.Bottomley@HansenPartnership.com
 3 *
 4 * GPLv2
 5 */
 6#include <linux/slab.h>
 7#include "tpm-dev.h"
 8
 9struct tpmrm_priv {
10	struct file_priv priv;
11	struct tpm_space space;
12};
13
14static int tpmrm_open(struct inode *inode, struct file *file)
15{
16	struct tpm_chip *chip;
17	struct tpmrm_priv *priv;
18	int rc;
19
20	chip = container_of(inode->i_cdev, struct tpm_chip, cdevs);
21	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
22	if (priv == NULL)
23		return -ENOMEM;
24
25	rc = tpm2_init_space(&priv->space);
26	if (rc) {
27		kfree(priv);
28		return -ENOMEM;
29	}
30
31	tpm_common_open(file, chip, &priv->priv);
32
33	return 0;
34}
35
36static int tpmrm_release(struct inode *inode, struct file *file)
37{
38	struct file_priv *fpriv = file->private_data;
39	struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv);
40
41	tpm_common_release(file, fpriv);
42	tpm2_del_space(fpriv->chip, &priv->space);
43	kfree(priv);
44
45	return 0;
46}
47
48static ssize_t tpmrm_write(struct file *file, const char __user *buf,
49		   size_t size, loff_t *off)
50{
51	struct file_priv *fpriv = file->private_data;
52	struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv);
53
54	return tpm_common_write(file, buf, size, off, &priv->space);
55}
56
57const struct file_operations tpmrm_fops = {
58	.owner = THIS_MODULE,
59	.llseek = no_llseek,
60	.open = tpmrm_open,
61	.read = tpm_common_read,
62	.write = tpmrm_write,
 
63	.release = tpmrm_release,
64};
65