911109c414
Because we cache file descriptors associated with cgroup "tasks" file it should not be used with SetProcessProfiles API which operates on entire processes rather than tasks. Change SetProcessProfiles API to prevent cache fd usage, modify ExecuteForProcess to not attempt to use cached fd. Also fix unconditional calls to EnableResourceCaching from ExecuteForTask which should be called only when SetTaskProfiles is used with use_fd_cache set to true. Bug: 149524788 Change-Id: I880efaf8217a4dd7ccfbb4fb167b2295cefc057a Signed-off-by: Suren Baghdasaryan <surenb@google.com>
70 lines
3 KiB
C++
70 lines
3 KiB
C++
/*
|
|
* Copyright 2014 Google, Inc
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/types.h>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
static constexpr const char* CGROUPV2_CONTROLLER_NAME = "cgroup2";
|
|
|
|
bool CgroupGetControllerPath(const std::string& cgroup_name, std::string* path);
|
|
bool CgroupGetAttributePath(const std::string& attr_name, std::string* path);
|
|
bool CgroupGetAttributePathForTask(const std::string& attr_name, int tid, std::string* path);
|
|
|
|
bool SetTaskProfiles(int tid, const std::vector<std::string>& profiles, bool use_fd_cache = false);
|
|
bool SetProcessProfiles(uid_t uid, pid_t pid, const std::vector<std::string>& profiles);
|
|
|
|
#ifndef __ANDROID_VNDK__
|
|
|
|
static constexpr const char* CGROUPS_RC_PATH = "/dev/cgroup_info/cgroup.rc";
|
|
|
|
bool UsePerAppMemcg();
|
|
|
|
// Drop the fd cache of cgroup path. It is used for when resource caching is enabled and a process
|
|
// loses the access to the path, the access checking (See SetCgroupAction::EnableResourceCaching)
|
|
// should be active again. E.g. Zygote specialization for child process.
|
|
void DropTaskProfilesResourceCaching();
|
|
|
|
// Return 0 and removes the cgroup if there are no longer any processes in it.
|
|
// Returns -1 in the case of an error occurring or if there are processes still running
|
|
// even after retrying for up to 200ms.
|
|
// If max_processes is not nullptr, it returns the maximum number of processes seen in the cgroup
|
|
// during the killing process. Note that this can be 0 if all processes from the process group have
|
|
// already been terminated.
|
|
int killProcessGroup(uid_t uid, int initialPid, int signal, int* max_processes = nullptr);
|
|
|
|
// Returns the same as killProcessGroup(), however it does not retry, which means
|
|
// that it only returns 0 in the case that the cgroup exists and it contains no processes.
|
|
int killProcessGroupOnce(uid_t uid, int initialPid, int signal, int* max_processes = nullptr);
|
|
|
|
int createProcessGroup(uid_t uid, int initialPid, bool memControl = false);
|
|
|
|
// Set various properties of a process group. For these functions to work, the process group must
|
|
// have been created by passing memControl=true to createProcessGroup.
|
|
bool setProcessGroupSwappiness(uid_t uid, int initialPid, int swappiness);
|
|
bool setProcessGroupSoftLimit(uid_t uid, int initialPid, int64_t softLimitInBytes);
|
|
bool setProcessGroupLimit(uid_t uid, int initialPid, int64_t limitInBytes);
|
|
|
|
void removeAllProcessGroups(void);
|
|
|
|
#endif // __ANDROID_VNDK__
|
|
|
|
__END_DECLS
|