1 /* 2 * Copyright 2018 Google, Inc 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17 #ifndef _LIBLMKD_UTILS_H_ 18 #define _LIBLMKD_UTILS_H_ 19 20 #include <sys/cdefs.h> 21 #include <sys/types.h> 22 23 #include <lmkd.h> 24 25 __BEGIN_DECLS 26 27 /* 28 * Connects to lmkd process and returns socket handle. 29 * On success returns socket handle. 30 * On error, -1 is returned, and errno is set appropriately. 31 */ 32 int lmkd_connect(); 33 34 /* 35 * Registers a process with lmkd and sets its oomadj score. 36 * On success returns 0. 37 * On error, -1 is returned. 38 * In the case of error errno is set appropriately. 39 */ 40 int lmkd_register_proc(int sock, struct lmk_procprio *params); 41 42 /* 43 * Creates memcg directory for given process. 44 * On success returns 0. 45 * -1 is returned if path creation failed. 46 * -2 is returned if tasks file open operation failed. 47 * -3 is returned if tasks file write operation failed. 48 * In the case of error errno is set appropriately. 49 */ 50 int create_memcg(uid_t uid, pid_t pid); 51 52 __END_DECLS 53 54 #endif /* _LIBLMKD_UTILS_H_ */ 55
