Function sys_chown

components/lwp/lwp_syscall.c:10379–10417

* @brief Change the ownership of a file or directory. * * This function changes the owner and/or group of the file or directory specified by `pathname`. * The `owner` and `group` parameters represent the new owner and group IDs, respectively. If either * parameter is set to `-1`, that aspect (owner or group) will remain unchanged. * * @param[in] pathname The path to the file or directory wh

 *       to change the ownership of a file or directory.
 */
sysret_t sys_chown(const char *pathname, uid_t owner, gid_t group)
{
    char *copy_file;
    size_t len_file, copy_len_file;
    struct dfs_attr attr = {0};
    int ret = 0;

    len_file = lwp_user_strlen(pathname);
    if (len_file <= 0)
    {
        return -EFAULT;
    }

    copy_file = (char*)rt_malloc(len_file + 1);
    if (!copy_file)
    {
        return -ENOMEM;
    }

    copy_len_file = lwp_get_from_user(copy_file, (void *)pathname, len_file);

    if(owner >= 0)
    {
        attr.st_uid = owner;
        attr.ia_valid |= ATTR_UID_SET;
    }

    if(group >= 0)
    {
        attr.st_gid = group;
        attr.ia_valid |= ATTR_GID_SET;
    }

    copy_file[copy_len_file] = '\0';
    ret = dfs_file_setattr(copy_file, &attr);
    rt_free(copy_file);

    return (ret < 0 ? GET_ERRNO() : ret);
}

#ifndef LWP_USING_RUNTIME
sysret_t lwp_teardown(struct rt_lwp *lwp, void (*cb)(void))