51369649b0
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348 lines
9.5 KiB
C
348 lines
9.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2005-2009 Apple Inc.
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* Copyright (c) 2016 Robert N. M. Watson
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* All rights reserved.
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*
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* Portions of this software were developed by BAE Systems, the University of
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* Cambridge Computer Laboratory, and Memorial University under DARPA/AFRL
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* contract FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent
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* Computing (TC) research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Apple Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _BSM_AUDIT_H
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#define _BSM_AUDIT_H
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#include <sys/param.h>
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#include <sys/types.h>
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#define AUDIT_RECORD_MAGIC 0x828a0f1b
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#define MAX_AUDIT_RECORDS 20
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#define MAXAUDITDATA (0x8000 - 1)
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#define MAX_AUDIT_RECORD_SIZE MAXAUDITDATA
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#define MIN_AUDIT_FILE_SIZE (512 * 1024)
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/*
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* Minimum noumber of free blocks on the filesystem containing the audit
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* log necessary to avoid a hard log rotation. DO NOT SET THIS VALUE TO 0
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* as the kernel does an unsigned compare, plus we want to leave a few blocks
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* free so userspace can terminate the log, etc.
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*/
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#define AUDIT_HARD_LIMIT_FREE_BLOCKS 4
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/*
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* Triggers for the audit daemon.
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*/
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#define AUDIT_TRIGGER_MIN 1
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#define AUDIT_TRIGGER_LOW_SPACE 1 /* Below low watermark. */
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#define AUDIT_TRIGGER_ROTATE_KERNEL 2 /* Kernel requests rotate. */
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#define AUDIT_TRIGGER_READ_FILE 3 /* Re-read config file. */
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#define AUDIT_TRIGGER_CLOSE_AND_DIE 4 /* Terminate audit. */
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#define AUDIT_TRIGGER_NO_SPACE 5 /* Below min free space. */
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#define AUDIT_TRIGGER_ROTATE_USER 6 /* User requests rotate. */
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#define AUDIT_TRIGGER_INITIALIZE 7 /* User initialize of auditd. */
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#define AUDIT_TRIGGER_EXPIRE_TRAILS 8 /* User expiration of trails. */
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#define AUDIT_TRIGGER_MAX 8
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/*
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* The special device filename (FreeBSD).
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*/
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#define AUDITDEV_FILENAME "audit"
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#define AUDIT_TRIGGER_FILE ("/dev/" AUDITDEV_FILENAME)
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/*
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* Pre-defined audit IDs
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*/
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#define AU_DEFAUDITID (uid_t)(-1)
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#define AU_DEFAUDITSID 0
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#define AU_ASSIGN_ASID -1
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/*
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* IPC types.
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*/
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#define AT_IPC_MSG ((u_char)1) /* Message IPC id. */
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#define AT_IPC_SEM ((u_char)2) /* Semaphore IPC id. */
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#define AT_IPC_SHM ((u_char)3) /* Shared mem IPC id. */
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/*
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* Audit conditions.
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*/
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#define AUC_UNSET 0
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#define AUC_AUDITING 1
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#define AUC_NOAUDIT 2
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#define AUC_DISABLED -1
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/*
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* auditon(2) commands.
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*/
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#define A_OLDGETPOLICY 2
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#define A_OLDSETPOLICY 3
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#define A_GETKMASK 4
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#define A_SETKMASK 5
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#define A_OLDGETQCTRL 6
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#define A_OLDSETQCTRL 7
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#define A_GETCWD 8
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#define A_GETCAR 9
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#define A_GETSTAT 12
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#define A_SETSTAT 13
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#define A_SETUMASK 14
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#define A_SETSMASK 15
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#define A_OLDGETCOND 20
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#define A_OLDSETCOND 21
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#define A_GETCLASS 22
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#define A_SETCLASS 23
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#define A_GETPINFO 24
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#define A_SETPMASK 25
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#define A_SETFSIZE 26
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#define A_GETFSIZE 27
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#define A_GETPINFO_ADDR 28
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#define A_GETKAUDIT 29
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#define A_SETKAUDIT 30
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#define A_SENDTRIGGER 31
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#define A_GETSINFO_ADDR 32
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#define A_GETPOLICY 33
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#define A_SETPOLICY 34
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#define A_GETQCTRL 35
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#define A_SETQCTRL 36
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#define A_GETCOND 37
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#define A_SETCOND 38
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#define A_GETEVENT 39 /* Get audit event-to-name mapping. */
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#define A_SETEVENT 40 /* Set audit event-to-name mapping. */
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/*
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* Audit policy controls.
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*/
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#define AUDIT_CNT 0x0001
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#define AUDIT_AHLT 0x0002
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#define AUDIT_ARGV 0x0004
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#define AUDIT_ARGE 0x0008
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#define AUDIT_SEQ 0x0010
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#define AUDIT_WINDATA 0x0020
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#define AUDIT_USER 0x0040
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#define AUDIT_GROUP 0x0080
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#define AUDIT_TRAIL 0x0100
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#define AUDIT_PATH 0x0200
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#define AUDIT_SCNT 0x0400
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#define AUDIT_PUBLIC 0x0800
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#define AUDIT_ZONENAME 0x1000
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#define AUDIT_PERZONE 0x2000
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/*
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* Default audit queue control parameters.
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*/
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#define AQ_HIWATER 100
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#define AQ_MAXHIGH 10000
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#define AQ_LOWATER 10
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#define AQ_BUFSZ MAXAUDITDATA
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#define AQ_MAXBUFSZ 1048576
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/*
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* Default minimum percentage free space on file system.
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*/
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#define AU_FS_MINFREE 20
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/*
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* Type definitions used indicating the length of variable length addresses
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* in tokens containing addresses, such as header fields.
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*/
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#define AU_IPv4 4
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#define AU_IPv6 16
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__BEGIN_DECLS
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typedef uid_t au_id_t;
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typedef pid_t au_asid_t;
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typedef u_int16_t au_event_t;
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typedef u_int16_t au_emod_t;
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typedef u_int32_t au_class_t;
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typedef u_int64_t au_asflgs_t __attribute__ ((aligned (8)));
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struct au_tid {
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u_int32_t port; /* XXX dev_t compatibility */
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u_int32_t machine;
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};
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typedef struct au_tid au_tid_t;
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struct au_tid_addr {
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u_int32_t at_port; /* XXX dev_t compatibility */
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u_int32_t at_type;
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u_int32_t at_addr[4];
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};
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typedef struct au_tid_addr au_tid_addr_t;
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struct au_mask {
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unsigned int am_success; /* Success bits. */
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unsigned int am_failure; /* Failure bits. */
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};
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typedef struct au_mask au_mask_t;
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struct auditinfo {
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au_id_t ai_auid; /* Audit user ID. */
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au_mask_t ai_mask; /* Audit masks. */
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au_tid_t ai_termid; /* Terminal ID. */
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au_asid_t ai_asid; /* Audit session ID. */
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};
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typedef struct auditinfo auditinfo_t;
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struct auditinfo_addr {
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au_id_t ai_auid; /* Audit user ID. */
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au_mask_t ai_mask; /* Audit masks. */
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au_tid_addr_t ai_termid; /* Terminal ID. */
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au_asid_t ai_asid; /* Audit session ID. */
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au_asflgs_t ai_flags; /* Audit session flags. */
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};
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typedef struct auditinfo_addr auditinfo_addr_t;
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struct auditpinfo {
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pid_t ap_pid; /* ID of target process. */
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au_id_t ap_auid; /* Audit user ID. */
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au_mask_t ap_mask; /* Audit masks. */
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au_tid_t ap_termid; /* Terminal ID. */
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au_asid_t ap_asid; /* Audit session ID. */
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};
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typedef struct auditpinfo auditpinfo_t;
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struct auditpinfo_addr {
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pid_t ap_pid; /* ID of target process. */
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au_id_t ap_auid; /* Audit user ID. */
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au_mask_t ap_mask; /* Audit masks. */
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au_tid_addr_t ap_termid; /* Terminal ID. */
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au_asid_t ap_asid; /* Audit session ID. */
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au_asflgs_t ap_flags; /* Audit session flags. */
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};
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typedef struct auditpinfo_addr auditpinfo_addr_t;
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struct au_session {
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auditinfo_addr_t *as_aia_p; /* Ptr to full audit info. */
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au_mask_t as_mask; /* Process Audit Masks. */
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};
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typedef struct au_session au_session_t;
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/*
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* Contents of token_t are opaque outside of libbsm.
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*/
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typedef struct au_token token_t;
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/*
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* Kernel audit queue control parameters:
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* Default: Maximum:
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* aq_hiwater: AQ_HIWATER (100) AQ_MAXHIGH (10000)
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* aq_lowater: AQ_LOWATER (10) <aq_hiwater
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* aq_bufsz: AQ_BUFSZ (32767) AQ_MAXBUFSZ (1048576)
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* aq_delay: 20 20000 (not used)
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*/
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struct au_qctrl {
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int aq_hiwater; /* Max # of audit recs in queue when */
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/* threads with new ARs get blocked. */
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int aq_lowater; /* # of audit recs in queue when */
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/* blocked threads get unblocked. */
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int aq_bufsz; /* Max size of audit record for audit(2). */
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int aq_delay; /* Queue delay (not used). */
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int aq_minfree; /* Minimum filesystem percent free space. */
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};
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typedef struct au_qctrl au_qctrl_t;
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/*
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* Structure for the audit statistics.
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*/
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struct audit_stat {
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unsigned int as_version;
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unsigned int as_numevent;
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int as_generated;
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int as_nonattrib;
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int as_kernel;
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int as_audit;
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int as_auditctl;
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int as_enqueue;
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int as_written;
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int as_wblocked;
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int as_rblocked;
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int as_dropped;
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int as_totalsize;
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unsigned int as_memused;
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};
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typedef struct audit_stat au_stat_t;
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/*
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* Structure for the audit file statistics.
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*/
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struct audit_fstat {
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u_int64_t af_filesz;
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u_int64_t af_currsz;
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};
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typedef struct audit_fstat au_fstat_t;
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/*
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* Audit to event class mapping.
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*/
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struct au_evclass_map {
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au_event_t ec_number;
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au_class_t ec_class;
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};
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typedef struct au_evclass_map au_evclass_map_t;
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/*
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* Event-to-name mapping.
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*/
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#define EVNAMEMAP_NAME_SIZE 64
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struct au_evname_map {
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au_event_t en_number;
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char en_name[EVNAMEMAP_NAME_SIZE];
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};
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typedef struct au_evname_map au_evname_map_t;
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/*
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* Audit system calls.
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*/
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#if !defined(_KERNEL) && !defined(KERNEL)
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int audit(const void *, int);
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int auditon(int, void *, int);
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int auditctl(const char *);
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int getauid(au_id_t *);
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int setauid(const au_id_t *);
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int getaudit(struct auditinfo *);
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int setaudit(const struct auditinfo *);
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int getaudit_addr(struct auditinfo_addr *, int);
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int setaudit_addr(const struct auditinfo_addr *, int);
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#ifdef __APPLE_API_PRIVATE
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#include <mach/port.h>
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mach_port_name_t audit_session_self(void);
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au_asid_t audit_session_join(mach_port_name_t port);
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#endif /* __APPLE_API_PRIVATE */
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#endif /* defined(_KERNEL) || defined(KERNEL) */
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__END_DECLS
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#endif /* !_BSM_AUDIT_H */
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