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/* system.h
* Copyright (C) 2017 The Android Open Source Project
*
* 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.
*
* Wrappers for system functionality.
*/
#ifndef _SYSTEM_H_
#define _SYSTEM_H_
#include <sys/capability.h>
#include <sys/prctl.h>
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Control the ambient capability set. */
#ifndef PR_CAP_AMBIENT
#define PR_CAP_AMBIENT 47
#endif
#ifndef PR_CAP_AMBIENT_IS_SET
#define PR_CAP_AMBIENT_IS_SET 1
#endif
#ifndef PR_CAP_AMBIENT_RAISE
#define PR_CAP_AMBIENT_RAISE 2
#endif
#ifndef PR_CAP_AMBIENT_LOWER
#define PR_CAP_AMBIENT_LOWER 3
#endif
#ifndef PR_CAP_AMBIENT_CLEAR_ALL
#define PR_CAP_AMBIENT_CLEAR_ALL 4
#endif
int lock_securebits(uint64_t skip_mask);
unsigned int get_last_valid_cap(void);
int cap_ambient_supported(void);
int config_net_loopback(void);
int setup_pipe_end(int fds[2], size_t index);
int setup_and_dupe_pipe_end(int fds[2], size_t index, int fd);
int write_pid_to_path(pid_t pid, const char *path);
int write_proc_file(pid_t pid, const char *content, const char *basename);
int setup_mount_destination(const char *source, const char *dest, uid_t uid,
uid_t gid);
#ifdef __cplusplus
}; /* extern "C" */
#endif
#endif /* _SYSTEM_H_ */
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