/* audit.h -- Auditing support
 *
 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Written by Rickard E. (Rik) Faith <faith@redhat.com>
 *
 */

#ifndef _LINUX_AUDIT_H_
#define _LINUX_AUDIT_H_

#include <linux/types.h>
#include <linux/elf-em.h>
#include <linux/ptrace.h>

/* The netlink messages for the audit system is divided into blocks:
 * 1000 - 1099 are for commanding the audit system
 * 1100 - 1199 user space trusted application messages
 * 1200 - 1299 messages internal to the audit daemon
 * 1300 - 1399 audit event messages
 * 1400 - 1499 SE Linux use
 * 1500 - 1599 kernel LSPP events
 * 1600 - 1699 kernel crypto events
 * 1700 - 1799 kernel anomaly records
 * 1800 - 1899 kernel integrity events
 * 1900 - 1999 future kernel use
 * 2000 is for otherwise unclassified kernel audit messages (legacy)
 * 2001 - 2099 unused (kernel)
 * 2100 - 2199 user space anomaly records
 * 2200 - 2299 user space actions taken in response to anomalies
 * 2300 - 2399 user space generated LSPP events
 * 2400 - 2499 user space crypto events
 * 2500 - 2999 future user space (maybe integrity labels and related events)
 *
 * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
 * exclusively user space. 1300-2099 is kernel --> user space 
 * communication.
 */
#define AUDIT_GET               1000    /* Get status */
#define AUDIT_SET               1001    /* Set status (enable/disable/auditd) */
#define AUDIT_LIST              1002    /* List syscall rules -- deprecated */
#define AUDIT_ADD               1003    /* Add syscall rule -- deprecated */
#define AUDIT_DEL               1004    /* Delete syscall rule -- deprecated */
#define AUDIT_USER              1005    /* Message from userspace -- deprecated */
#define AUDIT_LOGIN             1006    /* Define the login id and information */
#define AUDIT_WATCH_INS         1007    /* Insert file/dir watch entry */
#define AUDIT_WATCH_REM         1008    /* Remove file/dir watch entry */
#define AUDIT_WATCH_LIST        1009    /* List all file/dir watches */
#define AUDIT_SIGNAL_INFO       1010    /* Get info about sender of signal to auditd */
#define AUDIT_ADD_RULE          1011    /* Add syscall filtering rule */
#define AUDIT_DEL_RULE          1012    /* Delete syscall filtering rule */
#define AUDIT_LIST_RULES        1013    /* List syscall filtering rules */
#define AUDIT_TRIM              1014    /* Trim junk from watched tree */
#define AUDIT_MAKE_EQUIV        1015    /* Append to watched tree */
#define AUDIT_TTY_GET           1016    /* Get TTY auditing status */
#define AUDIT_TTY_SET           1017    /* Set TTY auditing status */

#define AUDIT_FIRST_USER_MSG    1100    /* Userspace messages mostly uninteresting to kernel */
#define AUDIT_USER_AVC          1107    /* We filter this differently */
#define AUDIT_USER_TTY          1124    /* Non-ICANON TTY input meaning */
#define AUDIT_LAST_USER_MSG     1199
#define AUDIT_FIRST_USER_MSG2   2100    /* More user space messages */
#define AUDIT_LAST_USER_MSG2    2999
 
#define AUDIT_DAEMON_START      1200    /* Daemon startup record */
#define AUDIT_DAEMON_END        1201    /* Daemon normal stop record */
#define AUDIT_DAEMON_ABORT      1202    /* Daemon error stop record */
#define AUDIT_DAEMON_CONFIG     1203    /* Daemon config change */

#define AUDIT_SYSCALL           1300    /* Syscall event */
/* #define AUDIT_FS_WATCH       1301     * Deprecated */
#define AUDIT_PATH              1302    /* Filename path information */
#define AUDIT_IPC               1303    /* IPC record */
#define AUDIT_SOCKETCALL        1304    /* sys_socketcall arguments */
#define AUDIT_CONFIG_CHANGE     1305    /* Audit system configuration change */
#define AUDIT_SOCKADDR          1306    /* sockaddr copied as syscall arg */
#define AUDIT_CWD               1307    /* Current working directory */
#define AUDIT_EXECVE            1309    /* execve arguments */
#define AUDIT_IPC_SET_PERM      1311    /* IPC new permissions record type */
#define AUDIT_MQ_OPEN           1312    /* POSIX MQ open record type */
#define AUDIT_MQ_SENDRECV       1313    /* POSIX MQ send/receive record type */
#define AUDIT_MQ_NOTIFY         1314    /* POSIX MQ notify record type */
#define AUDIT_MQ_GETSETATTR     1315    /* POSIX MQ get/set attribute record type */
#define AUDIT_KERNEL_OTHER      1316    /* For use by 3rd party modules */
#define AUDIT_FD_PAIR           1317    /* audit record for pipe/socketpair */
#define AUDIT_OBJ_PID           1318    /* ptrace target */
#define AUDIT_TTY               1319    /* Input on an administrative TTY */
#define AUDIT_EOE               1320    /* End of multi-record event */
#define AUDIT_BPRM_FCAPS        1321    /* Information about fcaps increasing perms */
#define AUDIT_CAPSET            1322    /* Record showing argument to sys_capset */
#define AUDIT_MMAP              1323    /* Record showing descriptor and flags in mmap */
#define AUDIT_NETFILTER_PKT     1324    /* Packets traversing netfilter chains */
#define AUDIT_NETFILTER_CFG     1325    /* Netfilter chain modifications */

#define AUDIT_AVC               1400    /* SE Linux avc denial or grant */
#define AUDIT_SELINUX_ERR       1401    /* Internal SE Linux Errors */
#define AUDIT_AVC_PATH          1402    /* dentry, vfsmount pair from avc */
#define AUDIT_MAC_POLICY_LOAD   1403    /* Policy file load */
#define AUDIT_MAC_STATUS        1404    /* Changed enforcing,permissive,off */
#define AUDIT_MAC_CONFIG_CHANGE 1405    /* Changes to booleans */
#define AUDIT_MAC_UNLBL_ALLOW   1406    /* NetLabel: allow unlabeled traffic */
#define AUDIT_MAC_CIPSOV4_ADD   1407    /* NetLabel: add CIPSOv4 DOI entry */
#define AUDIT_MAC_CIPSOV4_DEL   1408    /* NetLabel: del CIPSOv4 DOI entry */
#define AUDIT_MAC_MAP_ADD       1409    /* NetLabel: add LSM domain mapping */
#define AUDIT_MAC_MAP_DEL       1410    /* NetLabel: del LSM domain mapping */
#define AUDIT_MAC_IPSEC_ADDSA   1411    /* Not used */
#define AUDIT_MAC_IPSEC_DELSA   1412    /* Not used  */
#define AUDIT_MAC_IPSEC_ADDSPD  1413    /* Not used */
#define AUDIT_MAC_IPSEC_DELSPD  1414    /* Not used */
#define AUDIT_MAC_IPSEC_EVENT   1415    /* Audit an IPSec event */
#define AUDIT_MAC_UNLBL_STCADD  1416    /* NetLabel: add a static label */
#define AUDIT_MAC_UNLBL_STCDEL  1417    /* NetLabel: del a static label */

#define AUDIT_FIRST_KERN_ANOM_MSG   1700
#define AUDIT_LAST_KERN_ANOM_MSG    1799
#define AUDIT_ANOM_PROMISCUOUS      1700 /* Device changed promiscuous mode */
#define AUDIT_ANOM_ABEND            1701 /* Process ended abnormally */
#define AUDIT_ANOM_LINK             1702 /* Suspicious use of file links */
#define AUDIT_INTEGRITY_DATA        1800 /* Data integrity verification */
#define AUDIT_INTEGRITY_METADATA    1801 /* Metadata integrity verification */
#define AUDIT_INTEGRITY_STATUS      1802 /* Integrity enable status */
#define AUDIT_INTEGRITY_HASH        1803 /* Integrity HASH type */
#define AUDIT_INTEGRITY_PCR         1804 /* PCR invalidation msgs */
#define AUDIT_INTEGRITY_RULE        1805 /* policy rule */

#define AUDIT_KERNEL            2000    /* Asynchronous audit record. NOT A REQUEST. */

/* Rule flags */
#define AUDIT_FILTER_USER       0x00    /* Apply rule to user-generated messages */
#define AUDIT_FILTER_TASK       0x01    /* Apply rule at task creation (not syscall) */
#define AUDIT_FILTER_ENTRY      0x02    /* Apply rule at syscall entry */
#define AUDIT_FILTER_WATCH      0x03    /* Apply rule to file system watches */
#define AUDIT_FILTER_EXIT       0x04    /* Apply rule at syscall exit */
#define AUDIT_FILTER_TYPE       0x05    /* Apply rule at audit_log_start */

#define AUDIT_NR_FILTERS        6

#define AUDIT_FILTER_PREPEND    0x10    /* Prepend to front of list */

/* Rule actions */
#define AUDIT_NEVER    0        /* Do not build context if rule matches */
#define AUDIT_POSSIBLE 1        /* Build context if rule matches  */
#define AUDIT_ALWAYS   2        /* Generate audit record if rule matches */

/* Rule structure sizes -- if these change, different AUDIT_ADD and
 * AUDIT_LIST commands must be implemented. */
#define AUDIT_MAX_FIELDS   64
#define AUDIT_MAX_KEY_LEN  256
#define AUDIT_BITMASK_SIZE 64
#define AUDIT_WORD(nr) ((__u32)((nr)/32))
#define AUDIT_BIT(nr)  (1 << ((nr) - AUDIT_WORD(nr)*32))

#define AUDIT_SYSCALL_CLASSES 16
#define AUDIT_CLASS_DIR_WRITE 0
#define AUDIT_CLASS_DIR_WRITE_32 1
#define AUDIT_CLASS_CHATTR 2
#define AUDIT_CLASS_CHATTR_32 3
#define AUDIT_CLASS_READ 4
#define AUDIT_CLASS_READ_32 5
#define AUDIT_CLASS_WRITE 6
#define AUDIT_CLASS_WRITE_32 7
#define AUDIT_CLASS_SIGNAL 8
#define AUDIT_CLASS_SIGNAL_32 9

/* This bitmask is used to validate user input.  It represents all bits that
 * are currently used in an audit field constant understood by the kernel.
 * If you are adding a new #define AUDIT_<whatever>, please ensure that
 * AUDIT_UNUSED_BITS is updated if need be. */
#define AUDIT_UNUSED_BITS       0x07FFFC00

/* AUDIT_FIELD_COMPARE rule list */
#define AUDIT_COMPARE_UID_TO_OBJ_UID    1
#define AUDIT_COMPARE_GID_TO_OBJ_GID    2
#define AUDIT_COMPARE_EUID_TO_OBJ_UID   3
#define AUDIT_COMPARE_EGID_TO_OBJ_GID   4
#define AUDIT_COMPARE_AUID_TO_OBJ_UID   5
#define AUDIT_COMPARE_SUID_TO_OBJ_UID   6
#define AUDIT_COMPARE_SGID_TO_OBJ_GID   7
#define AUDIT_COMPARE_FSUID_TO_OBJ_UID  8
#define AUDIT_COMPARE_FSGID_TO_OBJ_GID  9

#define AUDIT_COMPARE_UID_TO_AUID       10
#define AUDIT_COMPARE_UID_TO_EUID       11
#define AUDIT_COMPARE_UID_TO_FSUID      12
#define AUDIT_COMPARE_UID_TO_SUID       13

#define AUDIT_COMPARE_AUID_TO_FSUID     14
#define AUDIT_COMPARE_AUID_TO_SUID      15
#define AUDIT_COMPARE_AUID_TO_EUID      16

#define AUDIT_COMPARE_EUID_TO_SUID      17
#define AUDIT_COMPARE_EUID_TO_FSUID     18

#define AUDIT_COMPARE_SUID_TO_FSUID     19

#define AUDIT_COMPARE_GID_TO_EGID       20
#define AUDIT_COMPARE_GID_TO_FSGID      21
#define AUDIT_COMPARE_GID_TO_SGID       22

#define AUDIT_COMPARE_EGID_TO_FSGID     23
#define AUDIT_COMPARE_EGID_TO_SGID      24
#define AUDIT_COMPARE_SGID_TO_FSGID     25

#define AUDIT_MAX_FIELD_COMPARE         AUDIT_COMPARE_SGID_TO_FSGID

/* Rule fields */
                                /* These are useful when checking the
                                 * task structure at task creation time
                                 * (AUDIT_PER_TASK).  */
#define AUDIT_PID       0
#define AUDIT_UID       1
#define AUDIT_EUID      2
#define AUDIT_SUID      3
#define AUDIT_FSUID     4
#define AUDIT_GID       5
#define AUDIT_EGID      6
#define AUDIT_SGID      7
#define AUDIT_FSGID     8
#define AUDIT_LOGINUID  9
#define AUDIT_PERS      10
#define AUDIT_ARCH      11
#define AUDIT_MSGTYPE   12
#define AUDIT_SUBJ_USER 13      /* security label user */
#define AUDIT_SUBJ_ROLE 14      /* security label role */
#define AUDIT_SUBJ_TYPE 15      /* security label type */
#define AUDIT_SUBJ_SEN  16      /* security label sensitivity label */
#define AUDIT_SUBJ_CLR  17      /* security label clearance label */
#define AUDIT_PPID      18
#define AUDIT_OBJ_USER  19
#define AUDIT_OBJ_ROLE  20
#define AUDIT_OBJ_TYPE  21
#define AUDIT_OBJ_LEV_LOW       22
#define AUDIT_OBJ_LEV_HIGH      23

                                /* These are ONLY useful when checking
                                 * at syscall exit time (AUDIT_AT_EXIT). */
#define AUDIT_DEVMAJOR  100
#define AUDIT_DEVMINOR  101
#define AUDIT_INODE     102
#define AUDIT_EXIT      103
#define AUDIT_SUCCESS   104     /* exit >= 0; value ignored */
#define AUDIT_WATCH     105
#define AUDIT_PERM      106
#define AUDIT_DIR       107
#define AUDIT_FILETYPE  108
#define AUDIT_OBJ_UID   109
#define AUDIT_OBJ_GID   110
#define AUDIT_FIELD_COMPARE     111

#define AUDIT_ARG0      200
#define AUDIT_ARG1      (AUDIT_ARG0+1)
#define AUDIT_ARG2      (AUDIT_ARG0+2)
#define AUDIT_ARG3      (AUDIT_ARG0+3)

#define AUDIT_FILTERKEY 210

#define AUDIT_NEGATE                    0x80000000

/* These are the supported operators.
 *      4  2  1  8
 *      =  >  <  ?
 *      ----------
 *      0  0  0  0      00      nonsense
 *      0  0  0  1      08      &  bit mask
 *      0  0  1  0      10      <
 *      0  1  0  0      20      >
 *      0  1  1  0      30      !=
 *      1  0  0  0      40      =
 *      1  0  0  1      48      &=  bit test
 *      1  0  1  0      50      <=
 *      1  1  0  0      60      >=
 *      1  1  1  1      78      all operators
 */
#define AUDIT_BIT_MASK                  0x08000000
#define AUDIT_LESS_THAN                 0x10000000
#define AUDIT_GREATER_THAN              0x20000000
#define AUDIT_NOT_EQUAL                 0x30000000
#define AUDIT_EQUAL                     0x40000000
#define AUDIT_BIT_TEST                  (AUDIT_BIT_MASK|AUDIT_EQUAL)
#define AUDIT_LESS_THAN_OR_EQUAL        (AUDIT_LESS_THAN|AUDIT_EQUAL)
#define AUDIT_GREATER_THAN_OR_EQUAL     (AUDIT_GREATER_THAN|AUDIT_EQUAL)
#define AUDIT_OPERATORS                 (AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK)

enum {
        Audit_equal,
        Audit_not_equal,
        Audit_bitmask,
        Audit_bittest,
        Audit_lt,
        Audit_gt,
        Audit_le,
        Audit_ge,
        Audit_bad
};

/* Status symbols */
                                /* Mask values */
#define AUDIT_STATUS_ENABLED            0x0001
#define AUDIT_STATUS_FAILURE            0x0002
#define AUDIT_STATUS_PID                0x0004
#define AUDIT_STATUS_RATE_LIMIT         0x0008
#define AUDIT_STATUS_BACKLOG_LIMIT      0x0010
                                /* Failure-to-log actions */
#define AUDIT_FAIL_SILENT       0
#define AUDIT_FAIL_PRINTK       1
#define AUDIT_FAIL_PANIC        2

/* distinguish syscall tables */
#define __AUDIT_ARCH_64BIT 0x80000000
#define __AUDIT_ARCH_LE    0x40000000
#define AUDIT_ARCH_ALPHA        (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_ARM          (EM_ARM|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_ARMEB        (EM_ARM)
#define AUDIT_ARCH_CRIS         (EM_CRIS|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_FRV          (EM_FRV)
#define AUDIT_ARCH_H8300        (EM_H8_300)
#define AUDIT_ARCH_I386         (EM_386|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_IA64         (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_M32R         (EM_M32R)
#define AUDIT_ARCH_M68K         (EM_68K)
#define AUDIT_ARCH_MIPS         (EM_MIPS)
#define AUDIT_ARCH_MIPSEL       (EM_MIPS|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_MIPS64       (EM_MIPS|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_MIPSEL64     (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_PARISC       (EM_PARISC)
#define AUDIT_ARCH_PARISC64     (EM_PARISC|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_PPC          (EM_PPC)
#define AUDIT_ARCH_PPC64        (EM_PPC64|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_S390         (EM_S390)
#define AUDIT_ARCH_S390X        (EM_S390|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SH           (EM_SH)
#define AUDIT_ARCH_SHEL         (EM_SH|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_SH64         (EM_SH|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SHEL64       (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_SPARC        (EM_SPARC)
#define AUDIT_ARCH_SPARC64      (EM_SPARCV9|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_X86_64       (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)

#define AUDIT_PERM_EXEC         1
#define AUDIT_PERM_WRITE        2
#define AUDIT_PERM_READ         4
#define AUDIT_PERM_ATTR         8

struct audit_status {
        __u32           mask;           /* Bit mask for valid entries */
        __u32           enabled;        /* 1 = enabled, 0 = disabled */
        __u32           failure;        /* Failure-to-log action */
        __u32           pid;            /* pid of auditd process */
        __u32           rate_limit;     /* messages rate limit (per second) */
        __u32           backlog_limit;  /* waiting messages limit */
        __u32           lost;           /* messages lost */
        __u32           backlog;        /* messages waiting in queue */
};

struct audit_tty_status {
        __u32           enabled; /* 1 = enabled, 0 = disabled */
};

/* audit_rule_data supports filter rules with both integer and string
 * fields.  It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
 * AUDIT_LIST_RULES requests.
 */
struct audit_rule_data {
        __u32           flags;  /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
        __u32           action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
        __u32           field_count;
        __u32           mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
        __u32           fields[AUDIT_MAX_FIELDS];
        __u32           values[AUDIT_MAX_FIELDS];
        __u32           fieldflags[AUDIT_MAX_FIELDS];
        __u32           buflen; /* total length of string fields */
        char            buf[0]; /* string fields buffer */
};

/* audit_rule is supported to maintain backward compatibility with
 * userspace.  It supports integer fields only and corresponds to
 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
 */
struct audit_rule {             /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
        __u32           flags;  /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
        __u32           action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
        __u32           field_count;
        __u32           mask[AUDIT_BITMASK_SIZE];
        __u32           fields[AUDIT_MAX_FIELDS];
        __u32           values[AUDIT_MAX_FIELDS];
};

#ifdef __KERNEL__
#include <linux/sched.h>

struct audit_sig_info {
        uid_t           uid;
        pid_t           pid;
        char            ctx[0];
};

struct audit_buffer;
struct audit_context;
struct inode;
struct netlink_skb_parms;
struct path;
struct linux_binprm;
struct mq_attr;
struct mqstat;
struct audit_watch;
struct audit_tree;

struct audit_krule {
        int                     vers_ops;
        u32                     flags;
        u32                     listnr;
        u32                     action;
        u32                     mask[AUDIT_BITMASK_SIZE];
        u32                     buflen; /* for data alloc on list rules */
        u32                     field_count;
        char                    *filterkey; /* ties events to rules */
        struct audit_field      *fields;
        struct audit_field      *arch_f; /* quick access to arch field */
        struct audit_field      *inode_f; /* quick access to an inode field */
        struct audit_watch      *watch; /* associated watch */
        struct audit_tree       *tree;  /* associated watched tree */
        struct list_head        rlist;  /* entry in audit_{watch,tree}.rules list */
        struct list_head        list;   /* for AUDIT_LIST* purposes only */
        u64                     prio;
};

struct audit_field {
        u32                             type;
        u32                             val;
        u32                             op;
        char                            *lsm_str;
        void                            *lsm_rule;
};

extern int __init audit_register_class(int class, unsigned *list);
extern int audit_classify_syscall(int abi, unsigned syscall);
extern int audit_classify_arch(int arch);
#ifdef CONFIG_AUDITSYSCALL
/* These are defined in auditsc.c */
                                /* Public API */
extern int  audit_alloc(struct task_struct *task);
extern void __audit_free(struct task_struct *task);
extern void __audit_syscall_entry(int arch,
                                  int major, unsigned long a0, unsigned long a1,
                                  unsigned long a2, unsigned long a3);
extern void __audit_syscall_exit(int ret_success, long ret_value);
extern void __audit_getname(const char *name);
extern void audit_putname(const char *name);
extern void __audit_inode(const char *name, const struct dentry *dentry);
extern void __audit_inode_child(const struct dentry *dentry,
                                const struct inode *parent);
extern void __audit_seccomp(unsigned long syscall, long signr, int code);
extern void __audit_ptrace(struct task_struct *t);

static inline int audit_dummy_context(void)
{
        void *p = current->audit_context;
        return !p || *(int *)p;
}
static inline void audit_free(struct task_struct *task)
{
        if (unlikely(task->audit_context))
                __audit_free(task);
}
static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
                                       unsigned long a1, unsigned long a2,
                                       unsigned long a3)
{
        if (unlikely(!audit_dummy_context()))
                __audit_syscall_entry(arch, major, a0, a1, a2, a3);
}
static inline void audit_syscall_exit(void *pt_regs)
{
        if (unlikely(current->audit_context)) {
                int success = is_syscall_success(pt_regs);
                int return_code = regs_return_value(pt_regs);

                __audit_syscall_exit(success, return_code);
        }
}
static inline void audit_getname(const char *name)
{
        if (unlikely(!audit_dummy_context()))
                __audit_getname(name);
}
static inline void audit_inode(const char *name, const struct dentry *dentry) {
        if (unlikely(!audit_dummy_context()))
                __audit_inode(name, dentry);
}
static inline void audit_inode_child(const struct dentry *dentry,
                                     const struct inode *parent) {
        if (unlikely(!audit_dummy_context()))
                __audit_inode_child(dentry, parent);
}
void audit_core_dumps(long signr);

static inline void audit_seccomp(unsigned long syscall, long signr, int code)
{
        if (unlikely(!audit_dummy_context()))
                __audit_seccomp(syscall, signr, code);
}

static inline void audit_ptrace(struct task_struct *t)
{
        if (unlikely(!audit_dummy_context()))
                __audit_ptrace(t);
}

                                /* Private API (for audit.c only) */
extern unsigned int audit_serial(void);
extern int auditsc_get_stamp(struct audit_context *ctx,
                              struct timespec *t, unsigned int *serial);
extern int  audit_set_loginuid(uid_t loginuid);
#define audit_get_loginuid(t) ((t)->loginuid)
#define audit_get_sessionid(t) ((t)->sessionid)
extern void audit_log_task_context(struct audit_buffer *ab);
extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
extern int __audit_bprm(struct linux_binprm *bprm);
extern void __audit_socketcall(int nargs, unsigned long *args);
extern int __audit_sockaddr(int len, void *addr);
extern void __audit_fd_pair(int fd1, int fd2);
extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
                                  const struct cred *new,
                                  const struct cred *old);
extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
extern void __audit_mmap_fd(int fd, int flags);

static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
{
        if (unlikely(!audit_dummy_context()))
                __audit_ipc_obj(ipcp);
}
static inline void audit_fd_pair(int fd1, int fd2)
{
        if (unlikely(!audit_dummy_context()))
                __audit_fd_pair(fd1, fd2);
}
static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
{
        if (unlikely(!audit_dummy_context()))
                __audit_ipc_set_perm(qbytes, uid, gid, mode);
}
static inline int audit_bprm(struct linux_binprm *bprm)
{
        if (unlikely(!audit_dummy_context()))
                return __audit_bprm(bprm);
        return 0;
}
static inline void audit_socketcall(int nargs, unsigned long *args)
{
        if (unlikely(!audit_dummy_context()))
                __audit_socketcall(nargs, args);
}
static inline int audit_sockaddr(int len, void *addr)
{
        if (unlikely(!audit_dummy_context()))
                return __audit_sockaddr(len, addr);
        return 0;
}
static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
{
        if (unlikely(!audit_dummy_context()))
                __audit_mq_open(oflag, mode, attr);
}
static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
{
        if (unlikely(!audit_dummy_context()))
                __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
}
static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
{
        if (unlikely(!audit_dummy_context()))
                __audit_mq_notify(mqdes, notification);
}
static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
{
        if (unlikely(!audit_dummy_context()))
                __audit_mq_getsetattr(mqdes, mqstat);
}

static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
                                       const struct cred *new,
                                       const struct cred *old)
{
        if (unlikely(!audit_dummy_context()))
                return __audit_log_bprm_fcaps(bprm, new, old);
        return 0;
}

static inline void audit_log_capset(pid_t pid, const struct cred *new,
                                   const struct cred *old)
{
        if (unlikely(!audit_dummy_context()))
                __audit_log_capset(pid, new, old);
}

static inline void audit_mmap_fd(int fd, int flags)
{
        if (unlikely(!audit_dummy_context()))
                __audit_mmap_fd(fd, flags);
}

extern int audit_n_rules;
extern int audit_signals;
#else /* CONFIG_AUDITSYSCALL */
#define audit_alloc(t) ({ 0; })
#define audit_free(t) do { ; } while (0)
#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
#define audit_syscall_exit(r) do { ; } while (0)
#define audit_dummy_context() 1
#define audit_getname(n) do { ; } while (0)
#define audit_putname(n) do { ; } while (0)
#define __audit_inode(n,d) do { ; } while (0)
#define __audit_inode_child(i,p) do { ; } while (0)
#define audit_inode(n,d) do { (void)(d); } while (0)
#define audit_inode_child(i,p) do { ; } while (0)
#define audit_core_dumps(i) do { ; } while (0)
#define audit_seccomp(i,s,c) do { ; } while (0)
#define auditsc_get_stamp(c,t,s) (0)
#define audit_get_loginuid(t) (-1)
#define audit_get_sessionid(t) (-1)
#define audit_log_task_context(b) do { ; } while (0)
#define audit_ipc_obj(i) ((void)0)
#define audit_ipc_set_perm(q,u,g,m) ((void)0)
#define audit_bprm(p) ({ 0; })
#define audit_socketcall(n,a) ((void)0)
#define audit_fd_pair(n,a) ((void)0)
#define audit_sockaddr(len, addr) ({ 0; })
#define audit_mq_open(o,m,a) ((void)0)
#define audit_mq_sendrecv(d,l,p,t) ((void)0)
#define audit_mq_notify(d,n) ((void)0)
#define audit_mq_getsetattr(d,s) ((void)0)
#define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; })
#define audit_log_capset(pid, ncr, ocr) ((void)0)
#define audit_mmap_fd(fd, flags) ((void)0)
#define audit_ptrace(t) ((void)0)
#define audit_n_rules 0
#define audit_signals 0
#endif /* CONFIG_AUDITSYSCALL */

#ifdef CONFIG_AUDIT
/* These are defined in audit.c */
                                /* Public API */
extern __printf(4, 5)
void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
               const char *fmt, ...);

extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
extern __printf(2, 3)
void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
extern void                 audit_log_end(struct audit_buffer *ab);
extern int                  audit_string_contains_control(const char *string,
                                                          size_t len);
extern void                 audit_log_n_hex(struct audit_buffer *ab,
                                          const unsigned char *buf,
                                          size_t len);
extern void                 audit_log_n_string(struct audit_buffer *ab,
                                               const char *buf,
                                               size_t n);
#define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b));
extern void                 audit_log_n_untrustedstring(struct audit_buffer *ab,
                                                        const char *string,
                                                        size_t n);
extern void                 audit_log_untrustedstring(struct audit_buffer *ab,
                                                      const char *string);
extern void                 audit_log_d_path(struct audit_buffer *ab,
                                             const char *prefix,
                                             const struct path *path);
extern void                 audit_log_key(struct audit_buffer *ab,
                                          char *key);
extern void                 audit_log_link_denied(const char *operation,
                                                  struct path *link);
extern void                 audit_log_lost(const char *message);
#ifdef CONFIG_SECURITY
extern void                 audit_log_secctx(struct audit_buffer *ab, u32 secid);
#else
#define audit_log_secctx(b,s) do { ; } while (0)
#endif

extern int                  audit_update_lsm_rules(void);

                                /* Private API (for audit.c only) */
extern int audit_filter_user(struct netlink_skb_parms *cb);
extern int audit_filter_type(int type);
extern int  audit_receive_filter(int type, int pid, int uid, int seq,
                                void *data, size_t datasz, uid_t loginuid,
                                u32 sessionid, u32 sid);
extern int audit_enabled;
#else
#define audit_log(c,g,t,f,...) do { ; } while (0)
#define audit_log_start(c,g,t) ({ NULL; })
#define audit_log_vformat(b,f,a) do { ; } while (0)
#define audit_log_format(b,f,...) do { ; } while (0)
#define audit_log_end(b) do { ; } while (0)
#define audit_log_n_hex(a,b,l) do { ; } while (0)
#define audit_log_n_string(a,c,l) do { ; } while (0)
#define audit_log_string(a,c) do { ; } while (0)
#define audit_log_n_untrustedstring(a,n,s) do { ; } while (0)
#define audit_log_untrustedstring(a,s) do { ; } while (0)
#define audit_log_d_path(b, p, d) do { ; } while (0)
#define audit_log_key(b, k) do { ; } while (0)
#define audit_log_link_denied(o, l) do { ; } while (0)
#define audit_log_secctx(b,s) do { ; } while (0)
#define audit_enabled 0
#endif
#endif
#endif