errno_private.h

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/*
 * Copyright (c) 2018 Intel Corporation.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_SYS_ERRNO_PRIVATE_H_
#define ZEPHYR_INCLUDE_SYS_ERRNO_PRIVATE_H_
 
#include <zephyr/toolchain.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* NOTE: located here to avoid include dependency loops between errno.h
 * and kernel.h
 */
 
#ifdef CONFIG_LIBC_ERRNO
#include <errno.h>
 
static inline int *z_errno(void)
{
        return &errno;
}
 
#elif defined(CONFIG_ERRNO_IN_TLS)
extern __thread int z_errno_var;
 
static inline int *z_errno(void)
{
        return &z_errno_var;
}
#else
__syscall int *z_errno(void);
 
#endif /* CONFIG_ERRNO_IN_TLS */
 
#ifdef __cplusplus
}
#endif
 
#if !defined(CONFIG_ERRNO_IN_TLS) && !defined(CONFIG_LIBC_ERRNO)
#include <syscalls/errno_private.h>
#endif /* CONFIG_ERRNO_IN_TLS */
 
#endif /* ZEPHYR_INCLUDE_SYS_ERRNO_PRIVATE_H_ */