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77 lines
2.0 KiB
77 lines
2.0 KiB
4 months ago
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/*
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* Copyright 2018 Google, Inc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LIBLMKD_UTILS_H_
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#define _LIBLMKD_UTILS_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <lmkd.h>
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__BEGIN_DECLS
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/*
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* Connects to lmkd process and returns socket handle.
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* On success returns socket handle.
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* On error, -1 is returned, and errno is set appropriately.
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*/
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int lmkd_connect();
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/*
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* Registers a process with lmkd and sets its oomadj score.
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* On success returns 0.
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* On error, -1 is returned.
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* In the case of error errno is set appropriately.
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*/
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int lmkd_register_proc(int sock, struct lmk_procprio *params);
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/*
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* Unregisters a process previously registered with lmkd.
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* On success returns 0.
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* On error, -1 is returned.
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* In the case of error errno is set appropriately.
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*/
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int lmkd_unregister_proc(int sock, struct lmk_procremove *params);
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enum update_props_result {
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UPDATE_PROPS_SUCCESS,
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UPDATE_PROPS_FAIL,
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UPDATE_PROPS_SEND_ERR,
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UPDATE_PROPS_RECV_ERR,
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UPDATE_PROPS_FORMAT_ERR,
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};
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/*
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* Updates lmkd properties.
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* In the case of ERR_SEND or ERR_RECV errno is set appropriately.
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*/
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enum update_props_result lmkd_update_props(int sock);
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/*
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* Creates memcg directory for given process.
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* On success returns 0.
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* -1 is returned if path creation failed.
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* -2 is returned if tasks file open operation failed.
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* -3 is returned if tasks file write operation failed.
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* In the case of error errno is set appropriately.
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*/
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int create_memcg(uid_t uid, pid_t pid);
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__END_DECLS
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#endif /* _LIBLMKD_UTILS_H_ */
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