mirror of
https://github.com/zephyrproject-rtos/zephyr
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346cce31d8
These calls are buildable on common sanitycheck platforms, but are not invoked at runtime in any tests accessible to CI. The changes are mostly mechanical, so the risk is low, but this commit is separated from the main API change to allow for more careful review. Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <drivers/i2c.h>
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#include <string.h>
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#include <syscall_handler.h>
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static inline int z_vrfy_i2c_configure(struct device *dev, u32_t dev_config)
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{
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Z_OOPS(Z_SYSCALL_DRIVER_I2C(dev, configure));
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return z_impl_i2c_configure((struct device *)dev, dev_config);
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}
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#include <syscalls/i2c_configure_mrsh.c>
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static u32_t copy_msgs_and_transfer(struct device *dev,
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const struct i2c_msg *msgs,
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u8_t num_msgs,
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u16_t addr)
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{
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struct i2c_msg copy[num_msgs];
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u8_t i;
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/* Use a local copy to avoid switcheroo attacks. */
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memcpy(copy, msgs, num_msgs * sizeof(*msgs));
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/* Validate the buffers in each message struct. Read options require
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* that the target buffer be writable
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*/
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for (i = 0U; i < num_msgs; i++) {
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Z_OOPS(Z_SYSCALL_MEMORY(copy[i].buf, copy[i].len,
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copy[i].flags & I2C_MSG_READ));
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}
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return z_impl_i2c_transfer(dev, copy, num_msgs, addr);
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}
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static inline int z_vrfy_i2c_transfer(struct device *dev,
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struct i2c_msg *msgs, u8_t num_msgs,
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u16_t addr)
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{
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Z_OOPS(Z_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C));
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/* copy_msgs_and_transfer() will allocate a copy on the stack using
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* VLA, so ensure this won't blow the stack. Most functions defined
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* in i2c.h use only a handful of messages, so up to 32 messages
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* should be more than sufficient.
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*/
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Z_OOPS(Z_SYSCALL_VERIFY(num_msgs >= 1 && num_msgs < 32));
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/* We need to be able to read the overall array of messages */
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Z_OOPS(Z_SYSCALL_MEMORY_ARRAY_READ(msgs, num_msgs,
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sizeof(struct i2c_msg)));
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return copy_msgs_and_transfer((struct device *)dev,
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(struct i2c_msg *)msgs,
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(u8_t)num_msgs, (u16_t)addr);
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}
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#include <syscalls/i2c_transfer_mrsh.c>
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static inline int z_vrfy_i2c_slave_driver_register(struct device *dev)
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{
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Z_OOPS(Z_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C));
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return z_impl_i2c_slave_driver_register(dev);
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}
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#include <syscalls/i2c_slave_driver_register_mrsh.c>
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static inline int z_vrfy_i2c_slave_driver_unregister(struct device *dev)
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{
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Z_OOPS(Z_SYSCALL_OBJ(dev, K_OBJ_DRIVER_I2C));
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return z_vrfy_i2c_slave_driver_unregister(dev);
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}
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#include <syscalls/i2c_slave_driver_unregister_mrsh.c>
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