mirror of
https://github.com/espressif/esp-idf.git
synced 2026-04-27 19:13:21 +00:00
Tomáš Rohlínek
91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
/*
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* SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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/*
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* Using huge multi-line macros is never nice, but in this case
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* the only alternative is to repeat this chunk of code (with different function names)
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* for each syscall being implemented. Given that this define is contained within a single
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* file, this looks like a good tradeoff.
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*
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* First we check if syscall is implemented by VFS (corresponding member is not NULL),
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* then call the right flavor of the method (e.g. open or open_p) depending on
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* ESP_VFS_FLAG_CONTEXT_PTR flag. If ESP_VFS_FLAG_CONTEXT_PTR is set, context is passed
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* in as first argument and _p variant is used for the call.
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* It is enough to check just one of them for NULL, as both variants are part of a union.
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*/
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#define CHECK_AND_CALL(ret, r, pvfs, func, ...) \
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if (pvfs->vfs->func ## _p == NULL) { \
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__errno_r(r) = ENOSYS; \
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return -1; \
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} \
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if (pvfs->flags & ESP_VFS_FLAG_CONTEXT_PTR) { \
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ret = (*pvfs->vfs->func ## _p)(pvfs->ctx, __VA_ARGS__); \
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} else { \
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ret = (*pvfs->vfs->func)(__VA_ARGS__);\
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}
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#define CHECK_AND_CALL_SUBCOMPONENT(ret, r, pvfs, component, func, ...) \
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if (pvfs->vfs->component == NULL || pvfs->vfs->component->func ## _p == NULL) { \
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__errno_r(r) = ENOSYS; \
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return -1; \
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} \
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if (pvfs->flags & ESP_VFS_FLAG_CONTEXT_PTR) { \
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ret = (*pvfs->vfs->component->func ## _p)(pvfs->ctx, __VA_ARGS__); \
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} else { \
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ret = (*pvfs->vfs->component->func)(__VA_ARGS__);\
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}
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#define CHECK_AND_CALLV(r, pvfs, func, ...) \
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if (pvfs->vfs->func ## _p == NULL) { \
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__errno_r(r) = ENOSYS; \
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return; \
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} \
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if (pvfs->flags & ESP_VFS_FLAG_CONTEXT_PTR) { \
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(*pvfs->vfs->func ## _p)(pvfs->ctx, __VA_ARGS__); \
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} else { \
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(*pvfs->vfs->func)(__VA_ARGS__);\
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}
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#define CHECK_AND_CALL_SUBCOMPONENTV(r, pvfs, component, func, ...) \
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if (pvfs->vfs->component == NULL || pvfs->vfs->component->func ## _p == NULL) { \
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__errno_r(r) = ENOSYS; \
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return; \
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} \
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if (pvfs->flags & ESP_VFS_FLAG_CONTEXT_PTR) { \
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(*pvfs->vfs->component->func ## _p)(pvfs->ctx, __VA_ARGS__); \
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} else { \
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(*pvfs->vfs->component->func)(__VA_ARGS__);\
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}
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#define CHECK_AND_CALLP(ret, r, pvfs, func, ...) \
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if (pvfs->vfs->func ## _p == NULL) { \
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__errno_r(r) = ENOSYS; \
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return NULL; \
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} \
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if (pvfs->flags & ESP_VFS_FLAG_CONTEXT_PTR) { \
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ret = (*pvfs->vfs->func ## _p)(pvfs->ctx, __VA_ARGS__); \
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} else { \
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ret = (*pvfs->vfs->func)(__VA_ARGS__);\
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}
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#define CHECK_AND_CALL_SUBCOMPONENTP(ret, r, pvfs, component, func, ...) \
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if (pvfs->vfs->component == NULL || pvfs->vfs->component->func ## _p == NULL) { \
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__errno_r(r) = ENOSYS; \
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return NULL; \
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} \
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if (pvfs->flags & ESP_VFS_FLAG_CONTEXT_PTR) { \
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ret = (*pvfs->vfs->component->func ## _p)(pvfs->ctx, __VA_ARGS__); \
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} else { \
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ret = (*pvfs->vfs->component->func)(__VA_ARGS__);\
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}
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#define CHECK_VFS_READONLY_FLAG(flags) \
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if (flags & ESP_VFS_FLAG_READONLY_FS) { \
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__errno_r(r) = EROFS; \
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return -1; \
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}
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