threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
/*
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* Copyright (c) 2015-2019, MICROTRUST Incorporated
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/unistd.h>
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#include <linux/sched.h>
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#include <linux/fs.h>
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#include <linux/uaccess.h>
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#include <linux/version.h>
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#include <linux/spinlock.h>
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#include <linux/semaphore.h>
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#include <linux/delay.h>
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#include <linux/kthread.h>
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#include <linux/errno.h>
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#include <linux/cdev.h>
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#include <linux/device.h>
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#include <linux/mutex.h>
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#include <linux/string.h>
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#include <linux/io.h>
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#include <linux/proc_fs.h>
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#include "main.h"
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#define IMSG_TAG "[tz_test]"
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#include <imsg_log.h>
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#include <isee_kernel_api.h>
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static int tz_test_open(struct inode *inode, struct file *file)
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{
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if (!is_teei_ready())
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return -EBUSY;
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return 0;
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}
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static int tz_test_release(struct inode *inode, struct file *file)
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{
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if (!is_teei_ready())
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return -EBUSY;
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return 0;
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}
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static long tz_test_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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int err = 0;
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struct tzdrv_test_data param;
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IMSG_TRACE("invoke command '%d' from '%s'\n",
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_IOC_NR(cmd), current->comm);
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if (!is_teei_ready())
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return -EBUSY;
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if (_IOC_TYPE(cmd) != TZDRV_IOC_MAGIC)
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return -EFAULT;
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if (_IOC_NR(cmd) > TZDRV_IOC_MAXNR)
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return -EFAULT;
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if (_IOC_DIR(cmd) & _IOC_READ)
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err = !access_ok(VERIFY_WRITE,
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(void __user *)arg, _IOC_SIZE(cmd));
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if (_IOC_DIR(cmd) & _IOC_WRITE)
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err = !access_ok(VERIFY_READ,
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(void __user *)arg, _IOC_SIZE(cmd));
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if (err)
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return -EPERM;
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if (IFASSIGN(err, copy_from_user(¶m, (void *)arg, sizeof(param))))
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return -EINVAL;
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switch (cmd) {
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case TZDRV_CMD_KERNEL_CA_TEST:
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err = kernel_ca_test(¶m);
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break;
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case TZDRV_CMD_SECURE_DRV_TEST:
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err = secure_drv_test(¶m);
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break;
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default:
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return -ENODEV;
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}
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if (copy_to_user((void *)arg, ¶m, sizeof(param)))
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IMSG_ERROR("copy data to user failed!\n");
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return err;
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}
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static const struct file_operations tz_test_fops = {
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.owner = THIS_MODULE,
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.open = tz_test_open,
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.release = tz_test_release,
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.unlocked_ioctl = tz_test_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = tz_test_ioctl,
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#endif
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.write = NULL,
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.read = NULL,
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};
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static int __init tz_test_init(void)
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{
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#define TZ_PERMISSION 0666
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/* S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH */
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proc_create("tz_test0", TZ_PERMISSION, NULL, &tz_test_fops);
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return 0;
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}
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late_initcall(tz_test_init);
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