rt-thread/include/klibc/kerrno.h

/*
 * Copyright (c) 2006-2024, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2024-09-22     Meco Man     the first version
 */

#ifndef __RT_KERRNO_H__
#define __RT_KERRNO_H__

#include <rtconfig.h>
#include <rttypes.h>

#ifdef __cplusplus
extern "C" {
#endif

#if defined(RT_USING_LIBC) && !defined(RT_USING_NANO)
/* POSIX error code compatible */
#define RT_EOK                          0               /**< There is no error */
#define RT_ERROR                        255             /**< A generic/unknown error happens */
#define RT_ETIMEOUT                     ETIMEDOUT       /**< Timed out */
#define RT_EFULL                        ENOSPC          /**< The resource is full */
#define RT_EEMPTY                       ENODATA         /**< The resource is empty */
#define RT_ENOMEM                       ENOMEM          /**< No memory */
#define RT_ENOSYS                       ENOSYS          /**< Function not implemented */
#define RT_EBUSY                        EBUSY           /**< Busy */
#define RT_EIO                          EIO             /**< IO error */
#define RT_EINTR                        EINTR           /**< Interrupted system call */
#define RT_EINVAL                       EINVAL          /**< Invalid argument */
#define RT_ENOENT                       ENOENT          /**< No entry */
#define RT_ENOSPC                       ENOSPC          /**< No space left */
#define RT_EPERM                        EPERM           /**< Operation not permitted */
#define RT_EFAULT                       EFAULT          /**< Bad address */
#define RT_ENOBUFS                      ENOBUFS         /**< No buffer space is available */
#define RT_ESCHEDISR                    253             /**< scheduler failure in isr context */
#define RT_ESCHEDLOCKED                 252             /**< scheduler failure in critical region */
#define RT_ETRAP                        254             /**< Trap event */
#else
#define RT_EOK                          0               /**< There is no error */
#define RT_ERROR                        1               /**< A generic/unknown error happens */
#define RT_ETIMEOUT                     2               /**< Timed out */
#define RT_EFULL                        3               /**< The resource is full */
#define RT_EEMPTY                       4               /**< The resource is empty */
#define RT_ENOMEM                       5               /**< No memory */
#define RT_ENOSYS                       6               /**< Function not implemented */
#define RT_EBUSY                        7               /**< Busy */
#define RT_EIO                          8               /**< IO error */
#define RT_EINTR                        9               /**< Interrupted system call */
#define RT_EINVAL                       10              /**< Invalid argument */
#define RT_ENOENT                       11              /**< No entry */
#define RT_ENOSPC                       12              /**< No space left */
#define RT_EPERM                        13              /**< Operation not permitted */
#define RT_ETRAP                        14              /**< Trap event */
#define RT_EFAULT                       15              /**< Bad address */
#define RT_ENOBUFS                      16              /**< No buffer space is available */
#define RT_ESCHEDISR                    17              /**< scheduler failure in isr context */
#define RT_ESCHEDLOCKED                 18              /**< scheduler failure in critical region */
#endif /* defined(RT_USING_LIBC) && !defined(RT_USING_NANO) */

rt_err_t rt_get_errno(void);
void rt_set_errno(rt_err_t no);
int *_rt_errno(void);
const char *rt_strerror(rt_err_t error);
#if !defined(RT_USING_NEWLIBC) && !defined(_WIN32)
#ifndef errno
#define errno    *_rt_errno()
#endif
#endif /* !defined(RT_USING_NEWLIBC) && !defined(_WIN32) */

#ifdef __cplusplus
}
#endif

#endif