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https://github.com/zephyrproject-rtos/zephyr
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8345e5ebf0
The various macros to do checks in system call handlers all implictly would generate a kernel oops if a check failed. This is undesirable for a few reasons: * System call handlers that acquire resources in the handler have no good recourse for cleanup if a check fails. * In some cases we may want to propagate a return value back to the caller instead of just killing the calling thread, even though the base API doesn't do these checks. These macros now all return a value, if nonzero is returned the check failed. K_OOPS() now wraps these calls to generate a kernel oops. At the moment, the policy for all APIs has not changed. They still all oops upon a failed check/ The macros now use the Z_ notation for private APIs. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
17 lines
385 B
C
17 lines
385 B
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 <entropy.h>
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#include <syscall_handler.h>
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Z_SYSCALL_HANDLER(entropy_get_entropy, dev, buffer, len)
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{
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Z_OOPS(Z_SYSCALL_DRIVER_ENTROPY(dev, get_entropy));
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Z_OOPS(Z_SYSCALL_MEMORY_WRITE(buffer, len));
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return _impl_entropy_get_entropy((struct device *)dev, (u8_t *)buffer,
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len);
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}
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