blob: be49d3ec63e579eacee1acf37433c64ea50ccb35 [file] [log] [blame]
/**
* Copyright (c) 2023-2024 Marcin Niestroj
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
*
* fcntl.h related code common to Zephyr (top: nsos_sockets.c) and Linux
* (bottom: nsos_adapt.c).
*
* It is needed by both sides to share the same macro definitions/values
* (prefixed with NSOS_MID_), which is not possible to achieve with two separate
* standard libc libraries, since they use different values for the same
* symbols.
*/
#include <fcntl.h>
#include "nsos_errno.h"
#include "nsos_fcntl.h"
#include <stdbool.h>
static int fl_to_nsos_mid_(int flags, bool strict)
{
int flags_mid = 0;
#define TO_NSOS_MID(_flag) \
if (flags & (_flag)) { \
flags &= ~(_flag); \
flags_mid |= NSOS_MID_ ## _flag; \
}
TO_NSOS_MID(O_RDONLY);
TO_NSOS_MID(O_WRONLY);
TO_NSOS_MID(O_RDWR);
TO_NSOS_MID(O_APPEND);
TO_NSOS_MID(O_EXCL);
TO_NSOS_MID(O_NONBLOCK);
#undef TO_NSOS_MID
if (strict && flags != 0) {
return -NSOS_MID_EINVAL;
}
return flags_mid;
}
int fl_to_nsos_mid(int flags)
{
return fl_to_nsos_mid_(flags, false);
}
int fl_to_nsos_mid_strict(int flags)
{
return fl_to_nsos_mid_(flags, true);
}
int fl_from_nsos_mid(int flags_mid)
{
int flags = 0;
#define FROM_NSOS_MID(_flag) \
if (flags_mid & NSOS_MID_ ## _flag) { \
flags_mid &= ~NSOS_MID_ ## _flag; \
flags |= _flag; \
}
FROM_NSOS_MID(O_RDONLY);
FROM_NSOS_MID(O_WRONLY);
FROM_NSOS_MID(O_RDWR);
FROM_NSOS_MID(O_APPEND);
FROM_NSOS_MID(O_EXCL);
FROM_NSOS_MID(O_NONBLOCK);
#undef FROM_NSOS_MID
return flags;
}