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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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780a7654ce
audit rule additions containing "-F auid!=4294967295" were failing
with EINVAL because of a regression caused by e1760bd.
Apparently some userland audit rule sets want to know if loginuid uid
has been set and are using a test for auid != 4294967295 to determine
that.
In practice that is a horrible way to ask if a value has been set,
because it relies on subtle implementation details and will break
every time the uid implementation in the kernel changes.
So add a clean way to test if the audit loginuid has been set, and
silently convert the old idiom to the cleaner and more comprehensible
new idiom.
Cc: <stable@vger.kernel.org> # 3.7
Reported-By: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Tested-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
407 lines
16 KiB
C
407 lines
16 KiB
C
/* audit.h -- Auditing support
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*
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* Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Written by Rickard E. (Rik) Faith <faith@redhat.com>
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*
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*/
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#ifndef _UAPI_LINUX_AUDIT_H_
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#define _UAPI_LINUX_AUDIT_H_
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#include <linux/types.h>
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#include <linux/elf-em.h>
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/* The netlink messages for the audit system is divided into blocks:
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* 1000 - 1099 are for commanding the audit system
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* 1100 - 1199 user space trusted application messages
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* 1200 - 1299 messages internal to the audit daemon
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* 1300 - 1399 audit event messages
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* 1400 - 1499 SE Linux use
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* 1500 - 1599 kernel LSPP events
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* 1600 - 1699 kernel crypto events
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* 1700 - 1799 kernel anomaly records
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* 1800 - 1899 kernel integrity events
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* 1900 - 1999 future kernel use
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* 2000 is for otherwise unclassified kernel audit messages (legacy)
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* 2001 - 2099 unused (kernel)
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* 2100 - 2199 user space anomaly records
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* 2200 - 2299 user space actions taken in response to anomalies
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* 2300 - 2399 user space generated LSPP events
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* 2400 - 2499 user space crypto events
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* 2500 - 2999 future user space (maybe integrity labels and related events)
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*
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* Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
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* exclusively user space. 1300-2099 is kernel --> user space
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* communication.
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*/
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#define AUDIT_GET 1000 /* Get status */
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#define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */
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#define AUDIT_LIST 1002 /* List syscall rules -- deprecated */
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#define AUDIT_ADD 1003 /* Add syscall rule -- deprecated */
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#define AUDIT_DEL 1004 /* Delete syscall rule -- deprecated */
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#define AUDIT_USER 1005 /* Message from userspace -- deprecated */
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#define AUDIT_LOGIN 1006 /* Define the login id and information */
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#define AUDIT_WATCH_INS 1007 /* Insert file/dir watch entry */
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#define AUDIT_WATCH_REM 1008 /* Remove file/dir watch entry */
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#define AUDIT_WATCH_LIST 1009 /* List all file/dir watches */
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#define AUDIT_SIGNAL_INFO 1010 /* Get info about sender of signal to auditd */
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#define AUDIT_ADD_RULE 1011 /* Add syscall filtering rule */
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#define AUDIT_DEL_RULE 1012 /* Delete syscall filtering rule */
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#define AUDIT_LIST_RULES 1013 /* List syscall filtering rules */
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#define AUDIT_TRIM 1014 /* Trim junk from watched tree */
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#define AUDIT_MAKE_EQUIV 1015 /* Append to watched tree */
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#define AUDIT_TTY_GET 1016 /* Get TTY auditing status */
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#define AUDIT_TTY_SET 1017 /* Set TTY auditing status */
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#define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */
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#define AUDIT_USER_AVC 1107 /* We filter this differently */
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#define AUDIT_USER_TTY 1124 /* Non-ICANON TTY input meaning */
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#define AUDIT_LAST_USER_MSG 1199
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#define AUDIT_FIRST_USER_MSG2 2100 /* More user space messages */
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#define AUDIT_LAST_USER_MSG2 2999
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#define AUDIT_DAEMON_START 1200 /* Daemon startup record */
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#define AUDIT_DAEMON_END 1201 /* Daemon normal stop record */
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#define AUDIT_DAEMON_ABORT 1202 /* Daemon error stop record */
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#define AUDIT_DAEMON_CONFIG 1203 /* Daemon config change */
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#define AUDIT_SYSCALL 1300 /* Syscall event */
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/* #define AUDIT_FS_WATCH 1301 * Deprecated */
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#define AUDIT_PATH 1302 /* Filename path information */
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#define AUDIT_IPC 1303 /* IPC record */
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#define AUDIT_SOCKETCALL 1304 /* sys_socketcall arguments */
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#define AUDIT_CONFIG_CHANGE 1305 /* Audit system configuration change */
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#define AUDIT_SOCKADDR 1306 /* sockaddr copied as syscall arg */
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#define AUDIT_CWD 1307 /* Current working directory */
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#define AUDIT_EXECVE 1309 /* execve arguments */
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#define AUDIT_IPC_SET_PERM 1311 /* IPC new permissions record type */
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#define AUDIT_MQ_OPEN 1312 /* POSIX MQ open record type */
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#define AUDIT_MQ_SENDRECV 1313 /* POSIX MQ send/receive record type */
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#define AUDIT_MQ_NOTIFY 1314 /* POSIX MQ notify record type */
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#define AUDIT_MQ_GETSETATTR 1315 /* POSIX MQ get/set attribute record type */
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#define AUDIT_KERNEL_OTHER 1316 /* For use by 3rd party modules */
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#define AUDIT_FD_PAIR 1317 /* audit record for pipe/socketpair */
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#define AUDIT_OBJ_PID 1318 /* ptrace target */
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#define AUDIT_TTY 1319 /* Input on an administrative TTY */
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#define AUDIT_EOE 1320 /* End of multi-record event */
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#define AUDIT_BPRM_FCAPS 1321 /* Information about fcaps increasing perms */
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#define AUDIT_CAPSET 1322 /* Record showing argument to sys_capset */
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#define AUDIT_MMAP 1323 /* Record showing descriptor and flags in mmap */
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#define AUDIT_NETFILTER_PKT 1324 /* Packets traversing netfilter chains */
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#define AUDIT_NETFILTER_CFG 1325 /* Netfilter chain modifications */
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#define AUDIT_SECCOMP 1326 /* Secure Computing event */
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#define AUDIT_AVC 1400 /* SE Linux avc denial or grant */
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#define AUDIT_SELINUX_ERR 1401 /* Internal SE Linux Errors */
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#define AUDIT_AVC_PATH 1402 /* dentry, vfsmount pair from avc */
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#define AUDIT_MAC_POLICY_LOAD 1403 /* Policy file load */
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#define AUDIT_MAC_STATUS 1404 /* Changed enforcing,permissive,off */
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#define AUDIT_MAC_CONFIG_CHANGE 1405 /* Changes to booleans */
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#define AUDIT_MAC_UNLBL_ALLOW 1406 /* NetLabel: allow unlabeled traffic */
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#define AUDIT_MAC_CIPSOV4_ADD 1407 /* NetLabel: add CIPSOv4 DOI entry */
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#define AUDIT_MAC_CIPSOV4_DEL 1408 /* NetLabel: del CIPSOv4 DOI entry */
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#define AUDIT_MAC_MAP_ADD 1409 /* NetLabel: add LSM domain mapping */
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#define AUDIT_MAC_MAP_DEL 1410 /* NetLabel: del LSM domain mapping */
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#define AUDIT_MAC_IPSEC_ADDSA 1411 /* Not used */
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#define AUDIT_MAC_IPSEC_DELSA 1412 /* Not used */
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#define AUDIT_MAC_IPSEC_ADDSPD 1413 /* Not used */
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#define AUDIT_MAC_IPSEC_DELSPD 1414 /* Not used */
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#define AUDIT_MAC_IPSEC_EVENT 1415 /* Audit an IPSec event */
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#define AUDIT_MAC_UNLBL_STCADD 1416 /* NetLabel: add a static label */
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#define AUDIT_MAC_UNLBL_STCDEL 1417 /* NetLabel: del a static label */
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#define AUDIT_FIRST_KERN_ANOM_MSG 1700
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#define AUDIT_LAST_KERN_ANOM_MSG 1799
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#define AUDIT_ANOM_PROMISCUOUS 1700 /* Device changed promiscuous mode */
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#define AUDIT_ANOM_ABEND 1701 /* Process ended abnormally */
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#define AUDIT_ANOM_LINK 1702 /* Suspicious use of file links */
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#define AUDIT_INTEGRITY_DATA 1800 /* Data integrity verification */
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#define AUDIT_INTEGRITY_METADATA 1801 /* Metadata integrity verification */
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#define AUDIT_INTEGRITY_STATUS 1802 /* Integrity enable status */
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#define AUDIT_INTEGRITY_HASH 1803 /* Integrity HASH type */
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#define AUDIT_INTEGRITY_PCR 1804 /* PCR invalidation msgs */
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#define AUDIT_INTEGRITY_RULE 1805 /* policy rule */
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#define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */
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/* Rule flags */
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#define AUDIT_FILTER_USER 0x00 /* Apply rule to user-generated messages */
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#define AUDIT_FILTER_TASK 0x01 /* Apply rule at task creation (not syscall) */
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#define AUDIT_FILTER_ENTRY 0x02 /* Apply rule at syscall entry */
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#define AUDIT_FILTER_WATCH 0x03 /* Apply rule to file system watches */
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#define AUDIT_FILTER_EXIT 0x04 /* Apply rule at syscall exit */
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#define AUDIT_FILTER_TYPE 0x05 /* Apply rule at audit_log_start */
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#define AUDIT_NR_FILTERS 6
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#define AUDIT_FILTER_PREPEND 0x10 /* Prepend to front of list */
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/* Rule actions */
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#define AUDIT_NEVER 0 /* Do not build context if rule matches */
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#define AUDIT_POSSIBLE 1 /* Build context if rule matches */
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#define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */
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/* Rule structure sizes -- if these change, different AUDIT_ADD and
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* AUDIT_LIST commands must be implemented. */
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#define AUDIT_MAX_FIELDS 64
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#define AUDIT_MAX_KEY_LEN 256
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#define AUDIT_BITMASK_SIZE 64
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#define AUDIT_WORD(nr) ((__u32)((nr)/32))
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#define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
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#define AUDIT_SYSCALL_CLASSES 16
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#define AUDIT_CLASS_DIR_WRITE 0
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#define AUDIT_CLASS_DIR_WRITE_32 1
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#define AUDIT_CLASS_CHATTR 2
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#define AUDIT_CLASS_CHATTR_32 3
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#define AUDIT_CLASS_READ 4
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#define AUDIT_CLASS_READ_32 5
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#define AUDIT_CLASS_WRITE 6
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#define AUDIT_CLASS_WRITE_32 7
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#define AUDIT_CLASS_SIGNAL 8
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#define AUDIT_CLASS_SIGNAL_32 9
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/* This bitmask is used to validate user input. It represents all bits that
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* are currently used in an audit field constant understood by the kernel.
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* If you are adding a new #define AUDIT_<whatever>, please ensure that
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* AUDIT_UNUSED_BITS is updated if need be. */
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#define AUDIT_UNUSED_BITS 0x07FFFC00
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/* AUDIT_FIELD_COMPARE rule list */
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#define AUDIT_COMPARE_UID_TO_OBJ_UID 1
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#define AUDIT_COMPARE_GID_TO_OBJ_GID 2
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#define AUDIT_COMPARE_EUID_TO_OBJ_UID 3
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#define AUDIT_COMPARE_EGID_TO_OBJ_GID 4
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#define AUDIT_COMPARE_AUID_TO_OBJ_UID 5
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#define AUDIT_COMPARE_SUID_TO_OBJ_UID 6
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#define AUDIT_COMPARE_SGID_TO_OBJ_GID 7
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#define AUDIT_COMPARE_FSUID_TO_OBJ_UID 8
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#define AUDIT_COMPARE_FSGID_TO_OBJ_GID 9
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#define AUDIT_COMPARE_UID_TO_AUID 10
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#define AUDIT_COMPARE_UID_TO_EUID 11
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#define AUDIT_COMPARE_UID_TO_FSUID 12
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#define AUDIT_COMPARE_UID_TO_SUID 13
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#define AUDIT_COMPARE_AUID_TO_FSUID 14
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#define AUDIT_COMPARE_AUID_TO_SUID 15
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#define AUDIT_COMPARE_AUID_TO_EUID 16
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#define AUDIT_COMPARE_EUID_TO_SUID 17
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#define AUDIT_COMPARE_EUID_TO_FSUID 18
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#define AUDIT_COMPARE_SUID_TO_FSUID 19
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#define AUDIT_COMPARE_GID_TO_EGID 20
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#define AUDIT_COMPARE_GID_TO_FSGID 21
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#define AUDIT_COMPARE_GID_TO_SGID 22
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#define AUDIT_COMPARE_EGID_TO_FSGID 23
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#define AUDIT_COMPARE_EGID_TO_SGID 24
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#define AUDIT_COMPARE_SGID_TO_FSGID 25
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#define AUDIT_MAX_FIELD_COMPARE AUDIT_COMPARE_SGID_TO_FSGID
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/* Rule fields */
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/* These are useful when checking the
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* task structure at task creation time
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* (AUDIT_PER_TASK). */
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#define AUDIT_PID 0
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#define AUDIT_UID 1
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#define AUDIT_EUID 2
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#define AUDIT_SUID 3
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#define AUDIT_FSUID 4
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#define AUDIT_GID 5
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#define AUDIT_EGID 6
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#define AUDIT_SGID 7
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#define AUDIT_FSGID 8
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#define AUDIT_LOGINUID 9
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#define AUDIT_PERS 10
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#define AUDIT_ARCH 11
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#define AUDIT_MSGTYPE 12
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#define AUDIT_SUBJ_USER 13 /* security label user */
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#define AUDIT_SUBJ_ROLE 14 /* security label role */
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#define AUDIT_SUBJ_TYPE 15 /* security label type */
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#define AUDIT_SUBJ_SEN 16 /* security label sensitivity label */
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#define AUDIT_SUBJ_CLR 17 /* security label clearance label */
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#define AUDIT_PPID 18
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#define AUDIT_OBJ_USER 19
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#define AUDIT_OBJ_ROLE 20
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#define AUDIT_OBJ_TYPE 21
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#define AUDIT_OBJ_LEV_LOW 22
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#define AUDIT_OBJ_LEV_HIGH 23
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#define AUDIT_LOGINUID_SET 24
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/* These are ONLY useful when checking
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* at syscall exit time (AUDIT_AT_EXIT). */
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#define AUDIT_DEVMAJOR 100
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#define AUDIT_DEVMINOR 101
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#define AUDIT_INODE 102
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#define AUDIT_EXIT 103
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#define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */
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#define AUDIT_WATCH 105
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#define AUDIT_PERM 106
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#define AUDIT_DIR 107
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#define AUDIT_FILETYPE 108
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#define AUDIT_OBJ_UID 109
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#define AUDIT_OBJ_GID 110
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#define AUDIT_FIELD_COMPARE 111
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#define AUDIT_ARG0 200
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#define AUDIT_ARG1 (AUDIT_ARG0+1)
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#define AUDIT_ARG2 (AUDIT_ARG0+2)
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#define AUDIT_ARG3 (AUDIT_ARG0+3)
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#define AUDIT_FILTERKEY 210
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#define AUDIT_NEGATE 0x80000000
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/* These are the supported operators.
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* 4 2 1 8
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* = > < ?
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* ----------
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* 0 0 0 0 00 nonsense
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* 0 0 0 1 08 & bit mask
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* 0 0 1 0 10 <
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* 0 1 0 0 20 >
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* 0 1 1 0 30 !=
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* 1 0 0 0 40 =
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* 1 0 0 1 48 &= bit test
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* 1 0 1 0 50 <=
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* 1 1 0 0 60 >=
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* 1 1 1 1 78 all operators
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*/
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#define AUDIT_BIT_MASK 0x08000000
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#define AUDIT_LESS_THAN 0x10000000
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#define AUDIT_GREATER_THAN 0x20000000
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#define AUDIT_NOT_EQUAL 0x30000000
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#define AUDIT_EQUAL 0x40000000
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#define AUDIT_BIT_TEST (AUDIT_BIT_MASK|AUDIT_EQUAL)
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#define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN|AUDIT_EQUAL)
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#define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN|AUDIT_EQUAL)
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#define AUDIT_OPERATORS (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK)
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enum {
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Audit_equal,
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Audit_not_equal,
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Audit_bitmask,
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Audit_bittest,
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Audit_lt,
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Audit_gt,
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Audit_le,
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Audit_ge,
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Audit_bad
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};
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/* Status symbols */
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/* Mask values */
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#define AUDIT_STATUS_ENABLED 0x0001
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#define AUDIT_STATUS_FAILURE 0x0002
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#define AUDIT_STATUS_PID 0x0004
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#define AUDIT_STATUS_RATE_LIMIT 0x0008
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#define AUDIT_STATUS_BACKLOG_LIMIT 0x0010
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/* Failure-to-log actions */
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#define AUDIT_FAIL_SILENT 0
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#define AUDIT_FAIL_PRINTK 1
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#define AUDIT_FAIL_PANIC 2
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/* distinguish syscall tables */
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#define __AUDIT_ARCH_64BIT 0x80000000
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#define __AUDIT_ARCH_LE 0x40000000
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#define AUDIT_ARCH_ALPHA (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_ARMEB (EM_ARM)
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#define AUDIT_ARCH_CRIS (EM_CRIS|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_FRV (EM_FRV)
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#define AUDIT_ARCH_H8300 (EM_H8_300)
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#define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_M32R (EM_M32R)
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#define AUDIT_ARCH_M68K (EM_68K)
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#define AUDIT_ARCH_MIPS (EM_MIPS)
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#define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT)
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#define AUDIT_ARCH_MIPSEL64 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_OPENRISC (EM_OPENRISC)
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#define AUDIT_ARCH_PARISC (EM_PARISC)
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#define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT)
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#define AUDIT_ARCH_PPC (EM_PPC)
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#define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT)
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#define AUDIT_ARCH_S390 (EM_S390)
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#define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT)
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#define AUDIT_ARCH_SH (EM_SH)
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#define AUDIT_ARCH_SHEL (EM_SH|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT)
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#define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
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#define AUDIT_ARCH_SPARC (EM_SPARC)
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#define AUDIT_ARCH_SPARC64 (EM_SPARCV9|__AUDIT_ARCH_64BIT)
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#define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
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#define AUDIT_PERM_EXEC 1
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#define AUDIT_PERM_WRITE 2
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#define AUDIT_PERM_READ 4
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#define AUDIT_PERM_ATTR 8
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struct audit_status {
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__u32 mask; /* Bit mask for valid entries */
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__u32 enabled; /* 1 = enabled, 0 = disabled */
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__u32 failure; /* Failure-to-log action */
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__u32 pid; /* pid of auditd process */
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__u32 rate_limit; /* messages rate limit (per second) */
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__u32 backlog_limit; /* waiting messages limit */
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__u32 lost; /* messages lost */
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__u32 backlog; /* messages waiting in queue */
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};
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struct audit_tty_status {
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__u32 enabled; /* 1 = enabled, 0 = disabled */
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__u32 log_passwd; /* 1 = enabled, 0 = disabled */
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};
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/* audit_rule_data supports filter rules with both integer and string
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* fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
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* AUDIT_LIST_RULES requests.
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*/
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struct audit_rule_data {
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__u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
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__u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
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__u32 field_count;
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__u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
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__u32 fields[AUDIT_MAX_FIELDS];
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__u32 values[AUDIT_MAX_FIELDS];
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__u32 fieldflags[AUDIT_MAX_FIELDS];
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__u32 buflen; /* total length of string fields */
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char buf[0]; /* string fields buffer */
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|
};
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|
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/* audit_rule is supported to maintain backward compatibility with
|
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* userspace. It supports integer fields only and corresponds to
|
|
* AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
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|
*/
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struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
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__u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
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|
__u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
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|
__u32 field_count;
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|
__u32 mask[AUDIT_BITMASK_SIZE];
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|
__u32 fields[AUDIT_MAX_FIELDS];
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|
__u32 values[AUDIT_MAX_FIELDS];
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|
};
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#endif /* _UAPI_LINUX_AUDIT_H_ */
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