1 /*
2 * Copyright (c) 2021 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 #include "init_log.h"
16 #include "init_param.h"
17 #include "param_init.h"
18 #include "param_manager.h"
19
20 #define MIN_SLEEP (100 * 1000)
21
22 #ifdef __LITEOS_A__
23 static int g_flags = 0;
ClientInit(void)24 __attribute__((constructor)) static int ClientInit(void)
25 {
26 if (PARAM_TEST_FLAG(g_flags, WORKSPACE_FLAGS_INIT)) {
27 return 0;
28 }
29 EnableInitLog(INIT_INFO);
30 PARAM_LOGV("InitParamClient");
31 int ret = InitParamWorkSpace(1, NULL);
32 PARAM_CHECK(ret == 0, return -1, "Failed to init param workspace");
33 PARAM_SET_FLAG(g_flags, WORKSPACE_FLAGS_INIT);
34 // init persist to save
35 InitPersistParamWorkSpace();
36 return 0;
37 }
38
ClientDeinit(void)39 __attribute__((destructor)) static void ClientDeinit(void)
40 {
41 if (PARAM_TEST_FLAG(g_flags, WORKSPACE_FLAGS_INIT)) {
42 CloseParamWorkSpace();
43 }
44 PARAM_SET_FLAG(g_flags, 0);
45 }
46 #endif
47
SystemSetParameter(const char * name,const char * value)48 int SystemSetParameter(const char *name, const char *value)
49 {
50 PARAM_CHECK(name != NULL && value != NULL, return -1, "Invalid name or value %s", name);
51 int ctrlService = 0;
52 int ret = CheckParameterSet(name, value, GetParamSecurityLabel(), &ctrlService);
53 PARAM_CHECK(ret == 0, return ret, "Forbid to set parameter %s", name);
54 PARAM_LOGV("SystemSetParameter name %s value: %s ctrlService %d", name, value, ctrlService);
55 if ((ctrlService & PARAM_CTRL_SERVICE) != PARAM_CTRL_SERVICE) { // ctrl param
56 uint32_t dataIndex = 0;
57 ret = WriteParam(name, value, &dataIndex, 0);
58 PARAM_CHECK(ret == 0, return ret, "Failed to set param %d name %s %s", ret, name, value);
59 ret = WritePersistParam(name, value);
60 PARAM_CHECK(ret == 0, return ret, "Failed to set persist param name %s", name);
61 } else {
62 PARAM_LOGE("SystemSetParameter can not support service ctrl parameter name %s", name);
63 }
64 return ret;
65 }
66
SystemWaitParameter(const char * name,const char * value,int32_t timeout)67 int SystemWaitParameter(const char *name, const char *value, int32_t timeout)
68 {
69 PARAM_CHECK(name != NULL && value != NULL, return PARAM_CODE_INVALID_PARAM,
70 "SystemWaitParameter failed! name is: %s, errNum is: %d", name, PARAM_CODE_INVALID_PARAM);
71 long long globalCommit = 0;
72 // first check permission
73 int ret = CheckParamPermission(GetParamSecurityLabel(), name, DAC_READ);
74 PARAM_CHECK(ret == 0, return ret, "SystemWaitParameter failed! name is: %s, errNum is: %d", name, ret);
75 uint32_t diff = 0;
76 struct timespec startTime = {0};
77 if (timeout <= 0) {
78 timeout = DEFAULT_PARAM_WAIT_TIMEOUT;
79 }
80 (void)clock_gettime(CLOCK_MONOTONIC, &startTime);
81 do {
82 long long commit = GetSystemCommitId();
83 if (commit != globalCommit) {
84 ParamNode *param = SystemCheckMatchParamWait(name, value);
85 if (param != NULL) {
86 ret = 0;
87 break;
88 }
89 }
90 globalCommit = commit;
91
92 usleep(MIN_SLEEP);
93 struct timespec finishTime = {0};
94 (void)clock_gettime(CLOCK_MONOTONIC, &finishTime);
95 diff = IntervalTime(&finishTime, &startTime);
96 if (diff >= timeout) {
97 ret = PARAM_CODE_TIMEOUT;
98 break;
99 }
100 } while (1);
101 PARAM_LOGI("SystemWaitParameter name %s value: %s diff %d timeout %d", name, value, diff, diff);
102 if (ret != 0) {
103 PARAM_LOGE("SystemWaitParameter failed! name is:%s, errNum is %d", name, ret);
104 }
105 return ret;
106 }
107
SystemSaveParameters(void)108 int SystemSaveParameters(void)
109 {
110 CheckAndSavePersistParam();
111 return PARAM_CODE_SUCCESS;
112 }
113
WatchParamCheck(const char * keyprefix)114 int WatchParamCheck(const char *keyprefix)
115 {
116 (void)keyprefix;
117 return PARAM_CODE_NOT_SUPPORT;
118 }
119
SystemCheckParamExist(const char * name)120 int SystemCheckParamExist(const char *name)
121 {
122 return SysCheckParamExist(name);
123 }
124