aio.h

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/*
 * SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_ZEPHYR_POSIX_AIO_H_
#define ZEPHYR_INCLUDE_ZEPHYR_POSIX_AIO_H_
 
/* size_t must be defined by the libc stddef.h */
#include <stddef.h>
#include <stdint.h>
#include <signal.h>
 
#include <zephyr/toolchain.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* slightly out of order w.r.t. the specification */
#if !defined(_OFF_T_DECLARED) && !defined(__off_t_defined)
typedef long off_t;
#define _OFF_T_DECLARED
#define __off_t_defined
#endif
 
#ifndef __SIZE_TYPE__
#define __SIZE_TYPE__ unsigned long
#endif
 
/* slightly out of order w.r.t. the specification */
#if !defined(_SSIZE_T_DECLARED) && !defined(__ssize_t_defined)
#define unsigned signed /* parasoft-suppress MISRAC2012-RULE_20_4-a MISRAC2012-RULE_20_4-b */
typedef __SIZE_TYPE__ ssize_t;
#undef unsigned
#define _SSIZE_T_DECLARED
#define __ssize_t_defined
#endif
 
/* time_t must be defined by the libc time.h */
#include <time.h>
 
#if __STDC_VERSION__ >= 201112L
/* struct timespec must be defined in the libc time.h */
#else
/* slightly out of order w.r.t. the specification */
#if !defined(_TIMESPEC_DECLARED) && !defined(__timespec_defined)
struct timespec {
    time_t tv_sec;
    long tv_nsec;
};
#define _TIMESPEC_DECLARED
#define __timespec_defined
#endif
#endif
 
struct aiocb {
    int aio_fildes;           
    off_t aio_offset;         
    volatile void *aio_buf;   
    size_t aio_nbytes;        
    int aio_reqprio;          
#if defined(_POSIX_REALTIME_SIGNALS) || defined(__DOXYGEN__)
    struct sigevent aio_sigevent; 
#endif
    int aio_lio_opcode;       
    void *z_posix_aio_req;          /* sys_aio request handle; NULL when nothing is outstanding */
};
 
#define AIO_ALLDONE     2
#define AIO_CANCELED    0
#define AIO_NOTCANCELED 1
 
#define LIO_NOP    2
#define LIO_NOWAIT 1
#define LIO_READ   0
#define LIO_WAIT   0
#define LIO_WRITE  1
 
#if _POSIX_C_SOURCE >= 200112L
 
int aio_cancel(int fildes, struct aiocb *aiocbp);
 
int aio_error(const struct aiocb *aiocbp);
 
int aio_fsync(int op, struct aiocb *aiocbp);
 
int aio_read(struct aiocb *aiocbp);
 
ssize_t aio_return(struct aiocb *aiocbp);
 
int aio_suspend(const struct aiocb *const list[], int nent, const struct timespec *timeout);
 
int aio_write(struct aiocb *aiocbp);
 
int lio_listio(int mode, struct aiocb *const list[ZRESTRICT], int nent,
           struct sigevent *ZRESTRICT sig);
 
#endif /* _POSIX_C_SOURCE >= 200112L */
 
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_ZEPHYR_POSIX_AIO_H_ */