Function copyfile

components/dfs/dfs_v2/src/dfs_file.c:2761–2821

* @brief Copy file contents from source to destination * * This function copies the contents of a source file to a destination file. * It handles memory allocation, file operations, and error checking. * * @param[in] src Path to the source file to be copied * @param[in] dst Path to the destination file to be created/overwritten */

 * @param[in] dst Path to the destination file to be created/overwritten
 */
static void copyfile(const char *src, const char *dst)
{
    int ret;
    struct dfs_file src_file, dst_file;
    rt_uint8_t *block_ptr;
    rt_int32_t read_bytes;

    block_ptr = (rt_uint8_t *)rt_malloc(BUF_SZ);
    if (block_ptr == NULL)
    {
        rt_kprintf("out of memory\n");
        return;
    }

    dfs_file_init(&src_file);

    ret = dfs_file_open(&src_file, src, O_RDONLY, 0);
    if (ret < 0)
    {
        dfs_file_deinit(&src_file);
        rt_free(block_ptr);
        rt_kprintf("Read %s failed\n", src);
        return;
    }

    dfs_file_init(&dst_file);

    ret = dfs_file_open(&dst_file, dst, O_WRONLY | O_CREAT | O_TRUNC, 0);
    if (ret < 0)
    {
        dfs_file_deinit(&dst_file);
        dfs_file_close(&src_file);
        dfs_file_deinit(&src_file);
        rt_free(block_ptr);
        rt_kprintf("Write %s failed\n", dst);
        return;
    }

    do
    {
        read_bytes = dfs_file_read(&src_file, block_ptr, BUF_SZ);
        if (read_bytes > 0)
        {
            int length;

            length = dfs_file_write(&dst_file, block_ptr, read_bytes);
            if (length != read_bytes)
            {
                /* write failed. */
                rt_kprintf("Write file data failed, errno=%d\n", length);
                break;
            }
        }
    } while (read_bytes > 0);

    dfs_file_close(&dst_file);
    dfs_file_deinit(&dst_file);
    dfs_file_close(&src_file);