c234a1b879
Impose a limit of 20 selinux denials per second. Denials beyond that point don't add any value, and have the potential to cause crashes or denial of service attacks. Do some other misc cleanup while I'm here. Bug: 18341932 Change-Id: I6125d629ae4d6ae131d2e53bfa41e1f50277d402
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/*
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* Copyright 2012, Samsung Telecommunications of America
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* Copyright (C) 2014 The Android Open Source Project
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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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* Written by William Roberts <w.roberts@sta.samsung.com>
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*/
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#ifndef _LIBAUDIT_H_
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#define _LIBAUDIT_H_
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#include <stdint.h>
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#include <sys/cdefs.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <linux/netlink.h>
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#include <linux/audit.h>
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__BEGIN_DECLS
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#define MAX_AUDIT_MESSAGE_LENGTH 8970
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typedef enum {
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GET_REPLY_BLOCKING=0,
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GET_REPLY_NONBLOCKING
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} reply_t;
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/* type == AUDIT_SIGNAL_INFO */
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struct audit_sig_info {
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uid_t uid;
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pid_t pid;
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char ctx[0];
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};
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struct audit_message {
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struct nlmsghdr nlh;
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char data[MAX_AUDIT_MESSAGE_LENGTH];
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};
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/**
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* Opens a connection to the Audit netlink socket
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* @return
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* A valid fd on success or < 0 on error with errno set.
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* Returns the same errors as man 2 socket.
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*/
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extern int audit_open(void);
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/**
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* Closes the fd returned from audit_open()
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* @param fd
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* The fd to close
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*/
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extern void audit_close(int fd);
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/**
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*
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* @param fd
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* The fd returned by a call to audit_open()
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* @param rep
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* The response struct to store the response in.
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* @param block
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* Whether or not to block on IO
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* @param peek
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* Whether or not we are to remove the message from
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* the queue when we do a read on the netlink socket.
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* @return
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* This function returns 0 on success, else -errno.
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*/
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extern int audit_get_reply(int fd, struct audit_message *rep, reply_t block,
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int peek);
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/**
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* Sets a pid to recieve audit netlink events from the kernel
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* @param fd
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* The fd returned by a call to audit_open()
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* @param pid
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* The pid whom to set as the reciever of audit messages
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* @return
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* This function returns 0 on success, -errno on error.
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*/
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extern int audit_setup(int fd, uint32_t pid);
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__END_DECLS
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#endif
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