2 * Copyright (c) 2016 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
23 #include "helper-cgroup.h"
26 #include "helper-file.h"
27 #include "helper-net-cls.h"
29 #define CUR_CLASSID_PATH "/tmp/cur_classid"
30 #define CLASSID_FILE_NAME "net_cls.classid"
32 typedef GArray task_classid_array;
34 static uint32_t __produce_classid(check_classid_used_cb check_classid_cb)
36 uint32_t classid = STC_RESERVED_CLASSID_MAX;
37 int classid_test_count = 0;
38 int ret = fread_uint(CUR_CLASSID_PATH, &classid);
40 STC_LOGI("Can not read current classid");
43 for (classid_test_count = 0; classid_test_count < INT32_MAX;
45 if (!check_classid_cb(classid))
49 ret = fwrite_uint(CUR_CLASSID_PATH, ++classid);
51 STC_LOGE("Can not write classid");
56 static int __place_classid_to_cgroup(const char *cgroup, const char *subdir,
58 check_classid_used_cb cb)
60 char buf[MAX_PATH_LENGTH];
61 uint32_t result_classid = (classid && *classid) ? *classid :
62 __produce_classid(cb);
64 /* set classid as out argument */
65 if (classid && !*classid)
66 *classid = result_classid;
68 snprintf(buf, sizeof(buf), "%s/%s", cgroup, subdir);
69 return cgroup_write_node_uint32(buf, CLASSID_FILE_NAME, result_classid);
72 static uint32_t __get_classid_from_cgroup(const char *cgroup,
75 char buf[MAX_PATH_LENGTH];
76 uint32_t classid = STC_UNKNOWN_CLASSID;
77 snprintf(buf, sizeof(buf), "%s/%s", cgroup, subdir);
79 int ret = cgroup_read_node_uint32(buf, CLASSID_FILE_NAME, &classid);
81 STC_LOGE("Can't read classid from cgroup %s", buf);
85 uint32_t get_classid_by_app_id(const char *app_id, int create)
89 uint32_t classid = STC_UNKNOWN_CLASSID;
90 const char *path_to_net_cgroup_dir = NULL;
93 STC_LOGE("app_id must be not empty");
94 return STC_UNKNOWN_CLASSID;
97 if (!strcmp(app_id, STC_TOTAL_DATACALL))
98 return STC_TOTAL_DATACALL_CLASSID;
100 if (!strcmp(app_id, STC_TOTAL_WIFI))
101 return STC_TOTAL_WIFI_CLASSID;
103 if (!strcmp(app_id, STC_TOTAL_BLUETOOTH))
104 return STC_TOTAL_BLUETOOTH_CLASSID;
106 if (strstr(app_id, STC_BACKGROUND_APP_SUFFIX))
107 path_to_net_cgroup_dir = BACKGROUND_CGROUP_NETWORK;
109 path_to_net_cgroup_dir = FOREGROUND_CGROUP_NETWORK;
113 classid = __get_classid_from_cgroup(path_to_net_cgroup_dir,
116 if (classid != STC_UNKNOWN_CLASSID)
119 ret = cgroup_make_subdir(path_to_net_cgroup_dir, (char *)app_id,
125 classid = __get_classid_from_cgroup(path_to_net_cgroup_dir,
128 ret = __place_classid_to_cgroup(path_to_net_cgroup_dir,
129 (char *)app_id, &classid, NULL);
137 STC_LOGE("error_code: [%d]", ret);
138 return STC_UNKNOWN_CLASSID;
141 stc_error_e place_pids_to_net_cgroup(const int pid, const char *app_id)
143 char child_buf[21 + MAX_DEC_SIZE(int) + MAX_DEC_SIZE(int)];
144 const char *path_to_net_cgroup_dir = NULL;
146 snprintf(child_buf, sizeof(child_buf), PROC_TASK_CHILDREN, pid, pid);
148 if (app_id == NULL) {
149 STC_LOGE("package name must be not empty");
150 return STC_ERROR_INVALID_PARAMETER;
153 if (strstr(app_id, STC_BACKGROUND_APP_SUFFIX))
154 path_to_net_cgroup_dir = BACKGROUND_CGROUP_NETWORK;
156 path_to_net_cgroup_dir = FOREGROUND_CGROUP_NETWORK;
158 if (access(child_buf, F_OK)) {
159 STC_LOGD("%s of %s is not existed", child_buf, app_id);
160 return cgroup_write_pid(path_to_net_cgroup_dir, app_id, pid);
163 return cgroup_write_pidtree(path_to_net_cgroup_dir, app_id, pid);