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65 lines
1.3 KiB
65 lines
1.3 KiB
/* |
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* Copyright (C) 2017 James.Bottomley@HansenPartnership.com |
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* |
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* GPLv2 |
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*/ |
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#include <linux/slab.h> |
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#include "tpm-dev.h" |
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struct tpmrm_priv { |
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struct file_priv priv; |
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struct tpm_space space; |
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}; |
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static int tpmrm_open(struct inode *inode, struct file *file) |
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{ |
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struct tpm_chip *chip; |
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struct tpmrm_priv *priv; |
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int rc; |
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chip = container_of(inode->i_cdev, struct tpm_chip, cdevs); |
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priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
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if (priv == NULL) |
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return -ENOMEM; |
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rc = tpm2_init_space(&priv->space); |
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if (rc) { |
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kfree(priv); |
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return -ENOMEM; |
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} |
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tpm_common_open(file, chip, &priv->priv); |
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return 0; |
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} |
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static int tpmrm_release(struct inode *inode, struct file *file) |
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{ |
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struct file_priv *fpriv = file->private_data; |
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struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv); |
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tpm_common_release(file, fpriv); |
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tpm2_del_space(fpriv->chip, &priv->space); |
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kfree(priv); |
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return 0; |
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} |
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static ssize_t tpmrm_write(struct file *file, const char __user *buf, |
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size_t size, loff_t *off) |
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{ |
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struct file_priv *fpriv = file->private_data; |
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struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv); |
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return tpm_common_write(file, buf, size, off, &priv->space); |
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} |
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const struct file_operations tpmrm_fops = { |
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.owner = THIS_MODULE, |
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.llseek = no_llseek, |
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.open = tpmrm_open, |
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.read = tpm_common_read, |
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.write = tpmrm_write, |
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.release = tpmrm_release, |
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}; |
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