fs_loader.h

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/*
 * Copyright (c) 2024 BayLibre SAS
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_LLEXT_FS_LOADER_H_
#define ZEPHYR_INCLUDE_LLEXT_FS_LOADER_H_
 
#include <zephyr/llext/loader.h>
#include <zephyr/fs/fs.h>
 
#ifdef __cplusplus
extern "C" {
#endif


struct llext_fs_loader {
        struct llext_loader loader;

        bool is_open;
        const char *name;
        struct fs_file_t file;
};

int llext_fs_prepare(struct llext_loader *ldr);
int llext_fs_read(struct llext_loader *ldr, void *buf, size_t len);
int llext_fs_seek(struct llext_loader *ldr, size_t pos);
void llext_fs_finalize(struct llext_loader *ldr);

#define LLEXT_FS_LOADER(_filename)                                                                 \
        {                                                                                          \
                .loader =                                                                          \
                        {                                                                          \
                                .prepare = llext_fs_prepare,                                       \
                                .read = llext_fs_read,                                             \
                                .seek = llext_fs_seek,                                             \
                                .peek = NULL,                                                      \
                                .finalize = llext_fs_finalize,                                     \
                                .storage = LLEXT_STORAGE_TEMPORARY,                                \
                        },                                                                         \
                .is_open = false,                                                                  \
                .name = (_filename),                                                               \
        }

 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_LLEXT_FS_LOADER_H_ */