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