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
16 #include <errno.h>
17 #include <limits.h>
18 #include <stdlib.h>
19 #include <signal.h>
20 #include <sys/prctl.h>
21 #include "hdf_base.h"
22 #include "devhost_service.h"
23 #include "devhost_service_full.h"
24 #include "hdf_cstring.h"
25 #include "hdf_log.h"
26 #include "hdf_power_manager.h"
27 #include "securec.h"
28
29 #define HDF_LOG_TAG hdf_device_host
30 #define DEVHOST_INPUT_PARAM_NUM 3
31 #define DEVHOST_INPUT_PARAM_HOSTID_POS 1
32
HdfStringToInt(const char * str,int * value)33 bool HdfStringToInt(const char *str, int *value)
34 {
35 if (str == NULL || value == NULL) {
36 return false;
37 }
38
39 char *end = NULL;
40 errno = 0;
41 const int base = 10;
42 long result = strtol(str, &end, base);
43 if (end == str || end[0] != '\0' || errno == ERANGE || result > INT_MAX || result < INT_MIN) {
44 return false;
45 }
46
47 *value = (int)result;
48 return true;
49 }
50
SetProcTitle(char ** argv,const char * newTitle)51 static void SetProcTitle(char **argv, const char *newTitle)
52 {
53 size_t len = strlen(argv[0]);
54 if (strlen(newTitle) > len) {
55 return;
56 }
57 (void)memset_s(argv[0], len, 0, len);
58 if (strcpy_s(argv[0], len + 1, newTitle) != EOK) {
59 return;
60 }
61 prctl(PR_SET_NAME, newTitle);
62 }
63
main(int argc,char ** argv)64 int main(int argc, char **argv)
65 {
66 if (argc != DEVHOST_INPUT_PARAM_NUM) {
67 HDF_LOGE("Devhost main parameter error, argc: %{public}d", argc);
68 return HDF_ERR_INVALID_PARAM;
69 }
70
71 prctl(PR_SET_PDEATHSIG, SIGKILL); // host process should exit with devmgr process
72
73 int hostId = 0;
74 if (!HdfStringToInt(argv[DEVHOST_INPUT_PARAM_HOSTID_POS], &hostId)) {
75 HDF_LOGE("Devhost main parameter error, argv[1]: %{public}s", argv[DEVHOST_INPUT_PARAM_HOSTID_POS]);
76 return HDF_ERR_INVALID_PARAM;
77 }
78 const char *hostName = argv[argc - 1];
79 HDF_LOGD("hdf device host %{public}s %{public}d start", hostName, hostId);
80 SetProcTitle(argv, hostName);
81
82 struct IDevHostService *instance = DevHostServiceNewInstance(hostId, hostName);
83 if (instance == NULL || instance->StartService == NULL) {
84 HDF_LOGE("DevHostServiceGetInstance fail");
85 return HDF_ERR_INVALID_OBJECT;
86 }
87 int status = instance->StartService(instance);
88 if (status != HDF_SUCCESS) {
89 HDF_LOGE("Devhost StartService fail, return: %{public}d", status);
90 DevHostServiceFreeInstance(instance);
91 return status;
92 }
93 HdfPowerManagerInit();
94 struct DevHostServiceFull *fullService = (struct DevHostServiceFull*)instance;
95 struct HdfMessageLooper *looper = &fullService->looper;
96 if ((looper != NULL) && (looper->Start != NULL)) {
97 looper->Start(looper);
98 }
99
100 DevHostServiceFreeInstance(instance);
101 HdfPowerManagerExit();
102
103 return status;
104 }
105
106