54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
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/*
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*
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* Copyright (C) 2014 Allwinner Ltd.
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*
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* Author:
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* Ryan Chen <ryanchen@allwinnertech.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/security.h>
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#include <linux/fivm.h>
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static struct fivm_operation fivm_ops = {NULL, NULL};
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int fivm_mmap_verify(struct file *file, unsigned long prot)
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{
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if (fivm_ops.mmap_verify)
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return fivm_ops.mmap_verify(file, prot);
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else
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return 0;
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}
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int fivm_open_verify(struct file *file, const char *pathname, int mask)
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{
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if (fivm_ops.open_verify)
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return fivm_ops.open_verify(file, pathname, mask);
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else
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return 0;
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}
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int fivm_register_func(
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int (*mmap_verify)(struct file *, unsigned long),
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int (*open_verify)(struct file *, const char *, int))
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{
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memset(&fivm_ops, 0, sizeof(fivm_ops));
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fivm_ops.mmap_verify = mmap_verify;
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fivm_ops.open_verify = open_verify;
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return 0;
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}
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EXPORT_SYMBOL(fivm_register_func);
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int fivm_unregister_func(void)
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{
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memset(&fivm_ops, 0, sizeof(fivm_ops));
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return 0;
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}
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EXPORT_SYMBOL(fivm_unregister_func);
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