Function dfs_file_ioctl

components/dfs/dfs_v2/src/dfs_file.c:1495–1523

* @brief Perform device-specific control operations * * This function performs device-specific control operations on an open file descriptor. * It is typically used for operations that cannot be expressed by regular file operations. * * @param[in] file Pointer to the file structure to perform ioctl on * @param[in] cmd Device-dependent request code * @param[in,out] args Pointer to optional a

 * @note The actual supported commands and their semantics depend on the underlying device driver
 */
int dfs_file_ioctl(struct dfs_file *file, int cmd, void *args)
{
    size_t ret = 0;

    if (file)
    {
        if (file->fops && file->fops->ioctl)
        {
            if (dfs_is_mounted(file->vnode->mnt) == 0)
            {
                ret = file->fops->ioctl(file, cmd, args);
            }
            else
            {
                ret = -EINVAL;
            }
        }
        else
        {
            ret = -ENOSYS;
        }
    }
    else
    {
        ret = -EBADF;
    }

    return ret;
}

/**
 * @brief Perform file control operations