1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "napi/native_api.h"
17 #include <cerrno>
18 #include <fcntl.h>
19 #include <js_native_api_types.h>
20 #include <sys/swap.h>
21 #include <unistd.h>
22 #include <hilog/log.h>
23
24 #define INIT (-1)
25 #define FAIL (-1)
26 #define SUCCESS 0
27 #define PARAM_1 1
28 #define MPARAM_1 (-1)
29 #define PARAM_0777 0777
30
31 #undef LOG_DOMAIN
32 #undef LOG_TAG
33 #define LOG_DOMAIN 0xFEFE
34 #define LOG_TAG "MUSL_LIBCTEST"
35
SwapOn(napi_env env,napi_callback_info info)36 static napi_value SwapOn(napi_env env, napi_callback_info info)
37 {
38 int flags = SWAP_FLAG_PREFER, backParam = PARAM_1;
39 napi_value result = nullptr;
40 const char *path = "/data/storage/el2/base/files/Fzl.txt";
41 errno = 0;
42 int fd = open(path, O_CREAT, PARAM_0777);
43 if (fd == FAIL) {
44 OH_LOG_INFO(LOG_APP, "SwapOn open failed: fd %{public}d errno : %{public}d", fd, errno);
45 napi_create_int32(env, FAIL, &result);
46 return result;
47 }
48 // Test syscall encapsulation interface
49 backParam = swapon(path, flags);
50 close(fd);
51 napi_create_int32(env, backParam, &result);
52 return result;
53 }
54
SwapOff(napi_env env,napi_callback_info info)55 static napi_value SwapOff(napi_env env, napi_callback_info info)
56 {
57 int flags = SWAP_FLAG_PREFER, checkParam, backParam = PARAM_1;
58 napi_value result = nullptr;
59 const char *path = "/data/storage/el2/base/files/Fzl.txt";
60 errno = 0;
61 int fd = open(path, O_CREAT, PARAM_0777);
62 if (fd == FAIL) {
63 OH_LOG_INFO(LOG_APP, "SwapOff open failed: fd %{public}d errno : %{public}d", fd, errno);
64 napi_create_int32(env, FAIL, &result);
65 return result;
66 }
67 // Test syscall encapsulation interface
68 checkParam = swapon(path, flags);
69 if (checkParam != MPARAM_1) {
70 backParam = swapoff(path);
71 }
72 close(fd);
73 napi_create_int32(env, backParam, &result);
74 return result;
75 }
76
77 EXTERN_C_START
Init(napi_env env,napi_value exports)78 static napi_value Init(napi_env env, napi_value exports)
79 {
80 napi_property_descriptor desc[] = {
81 {"swapon", nullptr, SwapOn, nullptr, nullptr, nullptr, napi_default, nullptr},
82 {"swapoff", nullptr, SwapOff, nullptr, nullptr, nullptr, napi_default, nullptr},
83 };
84 napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
85 return exports;
86 }
87 EXTERN_C_END
88
89 static napi_module demoModule = {
90 .nm_version = 1,
91 .nm_flags = 0,
92 .nm_filename = nullptr,
93 .nm_register_func = Init,
94 .nm_modname = "libswapndk",
95 .nm_priv = ((void *)0),
96 .reserved = {0},
97 };
98
RegisterModule(void)99 extern "C" __attribute__((constructor)) void RegisterModule(void) { napi_module_register(&demoModule); }
100