66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
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/*
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* Copyright (c) 2024 BayLibre SAS
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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*/
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#include <zephyr/llext/fs_loader.h>
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#include <zephyr/sys/util.h>
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#include <string.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(llext_fs_loader, CONFIG_LLEXT_LOG_LEVEL);
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int llext_fs_prepare(struct llext_loader *l)
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{
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int ret = 0;
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struct llext_fs_loader *fs_l = CONTAINER_OF(l, struct llext_fs_loader, loader);
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fs_file_t_init(&fs_l->file);
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ret = fs_open(&fs_l->file, fs_l->name, FS_O_READ);
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if (ret != 0) {
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LOG_DBG("Failed opening a file: %d", ret);
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return ret;
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}
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fs_l->is_open = true;
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return 0;
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}
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int llext_fs_read(struct llext_loader *l, void *buf, size_t len)
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{
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int ret = 0;
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struct llext_fs_loader *fs_l = CONTAINER_OF(l, struct llext_fs_loader, loader);
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if (fs_l->is_open) {
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ret = fs_read(&fs_l->file, buf, len);
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} else {
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ret = -EINVAL;
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}
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return ret == len ? 0 : -EINVAL;
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}
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int llext_fs_seek(struct llext_loader *l, size_t pos)
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{
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struct llext_fs_loader *fs_l = CONTAINER_OF(l, struct llext_fs_loader, loader);
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if (fs_l->is_open) {
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return fs_seek(&fs_l->file, pos, FS_SEEK_SET);
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} else {
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return -EINVAL;
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}
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}
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void llext_fs_finalize(struct llext_loader *l)
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{
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struct llext_fs_loader *fs_l = CONTAINER_OF(l, struct llext_fs_loader, loader);
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if (fs_l->is_open) {
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fs_close(&fs_l->file);
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fs_l->is_open = false;
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}
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}
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