forked from xuos/xiuos
93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file sys_close_session.c
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* @brief close session syscall
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* @version 3.0
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* @author AIIT XUOS Lab
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* @date 2023.08.25
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*/
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/*************************************************
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File name: sys_close_session.c
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Description: close session syscall
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Others:
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History:
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1. Date: 2023-08-28
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Author: AIIT XUOS Lab
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Modification:
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1. first version
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*************************************************/
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#include "assert.h"
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#include "multicores.h"
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#include "share_page.h"
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#include "syscall.h"
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#include "task.h"
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/// @brief close a session syscall
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/// @warning best to be called by a client
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/// @param cur_task
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/// @param session
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/// @return
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int sys_close_session(struct Thread* cur_task, struct Session* session)
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{
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assert(cur_task != NULL);
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/* check if session is available */
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if (session->buf == NULL || (uintptr_t)session->buf < USER_IPC_SPACE_BASE || (uintptr_t)session->buf > USER_IPC_SPACE_TOP) {
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return -1;
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}
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struct session_backend* session_backend = NULL;
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/* check if session is a client one or a server one */
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RbtNode* client_session_node = rbt_search(&cur_task->cli_sess_map, session->id);
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if (client_session_node != NULL) {
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struct client_session* client_session = (struct client_session*)client_session_node->data;
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if (CLIENT_SESSION_BACKEND(client_session)->session_id != session->id || //
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client_session->buf_addr != (uintptr_t)session->buf) {
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ERROR("Error closing session from %s: Invalid session\n", cur_task->name);
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return -1;
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}
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/* close client session */
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session_backend = CLIENT_SESSION_BACKEND(client_session);
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assert(session_backend->client == cur_task);
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assert(client_session->closed == false);
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client_session->closed = true;
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rbt_delete(&cur_task->cli_sess_map, client_session_node->key);
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xizi_share_page_manager.delete_share_pages(session_backend);
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}
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RbtNode* server_session_node = rbt_search(&cur_task->svr_sess_map, session->id);
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if (server_session_node != NULL) {
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struct server_session* server_session = (struct server_session*)server_session_node->data;
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if (SERVER_SESSION_BACKEND(server_session)->session_id != session->id || //
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server_session->buf_addr != (uintptr_t)session->buf) {
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ERROR("Error closing session from %s: Invalid session\n", cur_task->name);
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return -1;
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}
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session_backend = SERVER_SESSION_BACKEND(server_session);
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assert(session_backend->server == cur_task);
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assert(server_session->closed == false);
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server_session->closed = true;
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rbt_delete(&cur_task->cli_sess_map, server_session_node->key);
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xizi_share_page_manager.delete_share_pages(session_backend);
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}
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/* close this session */
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if (session_backend == NULL) {
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return -1;
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}
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return 0;
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} |