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 "/var/lib/stc/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 ret = fread_uint(CUR_CLASSID_PATH, &classid);
39 STC_LOGI("Can not read current classid"); //LCOV_EXCL_LINE
43 if (check_classid_cb) {
44 int classid_test_count = 0;
45 for (classid_test_count = 0; classid_test_count < INT32_MAX;
47 if (!check_classid_cb(classid))
52 ret = fwrite_uint(CUR_CLASSID_PATH, ++classid);
54 STC_LOGE("Can not write classid"); //LCOV_EXCL_LINE
59 static int __place_classid_to_cgroup(const char *cgroup, const char *subdir,
61 check_classid_used_cb cb)
63 char buf[MAX_PATH_LENGTH];
64 uint32_t result_classid = (classid && *classid) ? *classid :
65 __produce_classid(cb);
67 /* set classid as out argument */
68 if (classid && !*classid)
69 *classid = result_classid;
71 snprintf(buf, sizeof(buf), "%s/%s", cgroup, subdir);
72 return cgroup_write_node_uint32(buf, CLASSID_FILE_NAME, result_classid);
75 static uint32_t __get_classid_from_cgroup(const char *cgroup,
78 char buf[MAX_PATH_LENGTH];
79 uint32_t classid = STC_UNKNOWN_CLASSID;
80 snprintf(buf, sizeof(buf), "%s/%s", cgroup, subdir);
82 int ret = cgroup_read_node_uint32(buf, CLASSID_FILE_NAME, &classid);
84 STC_LOGE("Can't read classid from cgroup %s", buf); //LCOV_EXCL_LINE
88 stc_error_e init_current_classid(void)
93 if (stat(STC_CGROUP_NETWORK, &stat_buf) != 0) {
94 uint32_t classid = STC_RESERVED_CLASSID_MAX;
95 ret = fwrite_uint(CUR_CLASSID_PATH, classid);
97 STC_LOGE("Can not init current classid"); //LCOV_EXCL_LINE
98 return STC_ERROR_FAIL; //LCOV_EXCL_LINE
102 return STC_ERROR_NONE;
105 uint32_t get_classid_by_app_id(const char *app_id, int create)
109 uint32_t classid = STC_UNKNOWN_CLASSID;
110 const char *path_to_net_cgroup_dir = NULL;
112 if (app_id == NULL) {
113 STC_LOGE("app_id must be not empty"); //LCOV_EXCL_LINE
114 return STC_UNKNOWN_CLASSID; //LCOV_EXCL_LINE
117 if (!strcmp(app_id, STC_BACKGROUND_APP_ID))
118 return STC_BACKGROUND_APP_CLASSID;
120 if (!strcmp(app_id, STC_TOTAL_DATACALL))
121 return STC_TOTAL_DATACALL_CLASSID;
123 if (!strcmp(app_id, STC_TOTAL_WIFI))
124 return STC_TOTAL_WIFI_CLASSID;
126 if (!strcmp(app_id, STC_TOTAL_BLUETOOTH))
127 return STC_TOTAL_BLUETOOTH_CLASSID;
129 if (!strcmp(app_id, STC_TOTAL_IPV4))
130 return STC_TOTAL_IPV4_CLASSID;
132 if (!strcmp(app_id, STC_TOTAL_IPV6))
133 return STC_TOTAL_IPV6_CLASSID;
135 if (strstr(app_id, STC_BACKGROUND_APP_SUFFIX))
136 path_to_net_cgroup_dir = BACKGROUND_CGROUP_NETWORK;
138 path_to_net_cgroup_dir = FOREGROUND_CGROUP_NETWORK;
142 classid = __get_classid_from_cgroup(path_to_net_cgroup_dir, //LCOV_EXCL_LINE
145 if (classid != STC_UNKNOWN_CLASSID)
148 ret = cgroup_make_subdir(path_to_net_cgroup_dir, (char *)app_id,
154 classid = __get_classid_from_cgroup(path_to_net_cgroup_dir,
157 ret = __place_classid_to_cgroup(path_to_net_cgroup_dir,
158 (char *)app_id, &classid, NULL);
160 goto handle_error; //LCOV_EXCL_LINE
166 STC_LOGE("error_code: [%d]", ret); //LCOV_EXCL_LINE
167 return STC_UNKNOWN_CLASSID; //LCOV_EXCL_LINE
170 stc_error_e place_pids_to_net_cgroup(const int pid, const char *app_id)
172 char child_buf[21 + MAX_DEC_SIZE(int) + MAX_DEC_SIZE(int)];
173 const char *path_to_net_cgroup_dir = NULL;
175 snprintf(child_buf, sizeof(child_buf), PROC_TASK_CHILDREN, pid, pid);
177 if (app_id == NULL) {
178 STC_LOGE("package name must be not empty"); //LCOV_EXCL_LINE
179 return STC_ERROR_INVALID_PARAMETER; //LCOV_EXCL_LINE
182 if (!strcmp(app_id, STC_BACKGROUND_APP_ID))
183 path_to_net_cgroup_dir = STC_CGROUP_NETWORK;
184 else if (strstr(app_id, STC_BACKGROUND_APP_SUFFIX))
185 path_to_net_cgroup_dir = BACKGROUND_CGROUP_NETWORK;
187 path_to_net_cgroup_dir = FOREGROUND_CGROUP_NETWORK; //LCOV_EXCL_LINE
189 if (access(child_buf, F_OK)) {
191 STC_LOGD("%s of %s is not existed", child_buf, app_id); //LCOV_EXCL_LINE
192 return cgroup_write_pid(path_to_net_cgroup_dir, app_id, pid);
195 return cgroup_write_pidtree(path_to_net_cgroup_dir, app_id, pid); //LCOV_EXCL_LINE