[linux-block.git] / include / linux / audit.h

/* 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/sched.h>
#include <linux/ptrace.h>
#include <uapi/linux/audit.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 sk_buff;

struct audit_krule {
	int			vers_ops;
	u32			pflags;
	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;
};

/* Flag to indicate legacy AUDIT_LOGINUID unset usage */
#define AUDIT_LOGINUID_LEGACY		0x1

struct audit_field {
	u32				type;
	union {
		u32			val;
		kuid_t			uid;
		kgid_t			gid;
		struct {
			char		*lsm_str;
			void		*lsm_rule;
		};
	};
	u32				op;
};

extern int is_audit_feature_set(int which);

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);
/* only for compat system calls */
extern unsigned compat_write_class[];
extern unsigned compat_read_class[];
extern unsigned compat_dir_class[];
extern unsigned compat_chattr_class[];
extern unsigned compat_signal_class[];

extern int __weak audit_classify_compat_syscall(int abi, unsigned syscall);

/* audit_names->type values */
#define	AUDIT_TYPE_UNKNOWN	0	/* we don't know yet */
#define	AUDIT_TYPE_NORMAL	1	/* a "normal" audit record */
#define	AUDIT_TYPE_PARENT	2	/* a parent audit record */
#define	AUDIT_TYPE_CHILD_DELETE 3	/* a child being deleted */
#define	AUDIT_TYPE_CHILD_CREATE 4	/* a child being created */

/* maximized args number that audit_socketcall can process */
#define AUDITSC_ARGS		6

struct filename;

extern void audit_log_session_info(struct audit_buffer *ab);

#ifdef CONFIG_AUDIT_COMPAT_GENERIC
#define audit_is_compat(arch)  (!((arch) & __AUDIT_ARCH_64BIT))
#else
#define audit_is_compat(arch)  false
#endif

#ifdef CONFIG_AUDITSYSCALL
#include <asm/syscall.h> /* for syscall_get_arch() */

/* 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 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 struct filename *__audit_reusename(const __user char *uptr);
extern void __audit_getname(struct filename *name);
extern void audit_putname(struct filename *name);

#define AUDIT_INODE_PARENT	1	/* dentry represents the parent */
#define AUDIT_INODE_HIDDEN	2	/* audit record should be hidden */
extern void __audit_inode(struct filename *name, const struct dentry *dentry,
				unsigned int flags);
extern void __audit_inode_child(const struct inode *parent,
				const struct dentry *dentry,
				const unsigned char type);
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 major, unsigned long a0,
				       unsigned long a1, unsigned long a2,
				       unsigned long a3)
{
	if (unlikely(current->audit_context))
		__audit_syscall_entry(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);
		long return_code = regs_return_value(pt_regs);

		__audit_syscall_exit(success, return_code);
	}
}
static inline struct filename *audit_reusename(const __user char *name)
{
	if (unlikely(!audit_dummy_context()))
		return __audit_reusename(name);
	return NULL;
}
static inline void audit_getname(struct filename *name)
{
	if (unlikely(!audit_dummy_context()))
		__audit_getname(name);
}
static inline void audit_inode(struct filename *name,
				const struct dentry *dentry,
				unsigned int parent) {
	if (unlikely(!audit_dummy_context())) {
		unsigned int flags = 0;
		if (parent)
			flags |= AUDIT_INODE_PARENT;
		__audit_inode(name, dentry, flags);
	}
}
static inline void audit_inode_parent_hidden(struct filename *name,
						const struct dentry *dentry)
{
	if (unlikely(!audit_dummy_context()))
		__audit_inode(name, dentry,
				AUDIT_INODE_PARENT | AUDIT_INODE_HIDDEN);
}
static inline void audit_inode_child(const struct inode *parent,
				     const struct dentry *dentry,
				     const unsigned char type) {
	if (unlikely(!audit_dummy_context()))
		__audit_inode_child(parent, dentry, type);
}
void audit_core_dumps(long signr);

static inline void audit_seccomp(unsigned long syscall, long signr, int code)
{
	/* Force a record to be reported if a signal was delivered. */
	if (signr || 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(kuid_t loginuid);

static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
{
	return tsk->loginuid;
}

static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
{
	return tsk->sessionid;
}

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 void __audit_bprm(struct linux_binprm *bprm);
extern int __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(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 void audit_bprm(struct linux_binprm *bprm)
{
	if (unlikely(!audit_dummy_context()))
		__audit_bprm(bprm);
}
static inline int audit_socketcall(int nargs, unsigned long *args)
{
	if (unlikely(!audit_dummy_context()))
		return __audit_socketcall(nargs, args);
	return 0;
}
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(const struct cred *new,
				   const struct cred *old)
{
	if (unlikely(!audit_dummy_context()))
		__audit_log_capset(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 */
static inline int audit_alloc(struct task_struct *task)
{
	return 0;
}
static inline void audit_free(struct task_struct *task)
{ }
static inline void audit_syscall_entry(int major, unsigned long a0,
				       unsigned long a1, unsigned long a2,
				       unsigned long a3)
{ }
static inline void audit_syscall_exit(void *pt_regs)
{ }
static inline int audit_dummy_context(void)
{
	return 1;
}
static inline struct filename *audit_reusename(const __user char *name)
{
	return NULL;
}
static inline void audit_getname(struct filename *name)
{ }
static inline void audit_putname(struct filename *name)
{ }
static inline void __audit_inode(struct filename *name,
					const struct dentry *dentry,
					unsigned int flags)
{ }
static inline void __audit_inode_child(const struct inode *parent,
					const struct dentry *dentry,
					const unsigned char type)
{ }
static inline void audit_inode(struct filename *name,
				const struct dentry *dentry,
				unsigned int parent)
{ }
static inline void audit_inode_parent_hidden(struct filename *name,
				const struct dentry *dentry)
{ }
static inline void audit_inode_child(const struct inode *parent,
				     const struct dentry *dentry,
				     const unsigned char type)
{ }
static inline void audit_core_dumps(long signr)
{ }
static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
{ }
static inline void audit_seccomp(unsigned long syscall, long signr, int code)
{ }
static inline int auditsc_get_stamp(struct audit_context *ctx,
			      struct timespec *t, unsigned int *serial)
{
	return 0;
}
static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
{
	return INVALID_UID;
}
static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
{
	return -1;
}
static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
{ }
static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
					gid_t gid, umode_t mode)
{ }
static inline void audit_bprm(struct linux_binprm *bprm)
{ }
static inline int audit_socketcall(int nargs, unsigned long *args)
{
	return 0;
}
static inline void audit_fd_pair(int fd1, int fd2)
{ }
static inline int audit_sockaddr(int len, void *addr)
{
	return 0;
}
static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
{ }
static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
				     unsigned int msg_prio,
				     const struct timespec *abs_timeout)
{ }
static inline void audit_mq_notify(mqd_t mqdes,
				   const struct sigevent *notification)
{ }
static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
{ }
static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
				       const struct cred *new,
				       const struct cred *old)
{
	return 0;
}
static inline void audit_log_capset(const struct cred *new,
				    const struct cred *old)
{ }
static inline void audit_mmap_fd(int fd, int flags)
{ }
static inline void audit_ptrace(struct task_struct *t)
{ }
#define audit_n_rules 0
#define audit_signals 0
#endif /* CONFIG_AUDITSYSCALL */

static inline bool audit_loginuid_set(struct task_struct *tsk)
{
	return uid_valid(audit_get_loginuid(tsk));
}

#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);
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
static inline void	    audit_log_secctx(struct audit_buffer *ab, u32 secid)
{ }
#endif

extern int audit_log_task_context(struct audit_buffer *ab);
extern void audit_log_task_info(struct audit_buffer *ab,
				struct task_struct *tsk);

extern int		    audit_update_lsm_rules(void);

				/* Private API (for audit.c only) */
extern int audit_filter_user(int type);
extern int audit_filter_type(int type);
extern int audit_rule_change(int type, __u32 portid, int seq,
				void *data, size_t datasz);
extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);

extern u32 audit_enabled;
#else /* CONFIG_AUDIT */
static inline __printf(4, 5)
void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	       const char *fmt, ...)
{ }
static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
						   gfp_t gfp_mask, int type)
{
	return NULL;
}
static inline __printf(2, 3)
void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
{ }
static inline void audit_log_end(struct audit_buffer *ab)
{ }
static inline void audit_log_n_hex(struct audit_buffer *ab,
				   const unsigned char *buf, size_t len)
{ }
static inline void audit_log_n_string(struct audit_buffer *ab,
				      const char *buf, size_t n)
{ }
static inline void  audit_log_n_untrustedstring(struct audit_buffer *ab,
						const char *string, size_t n)
{ }
static inline void audit_log_untrustedstring(struct audit_buffer *ab,
					     const char *string)
{ }
static inline void audit_log_d_path(struct audit_buffer *ab,
				    const char *prefix,
				    const struct path *path)
{ }
static inline void audit_log_key(struct audit_buffer *ab, char *key)
{ }
static inline void audit_log_link_denied(const char *string,
					 const struct path *link)
{ }
static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
{ }
static inline int audit_log_task_context(struct audit_buffer *ab)
{
	return 0;
}
static inline void audit_log_task_info(struct audit_buffer *ab,
				       struct task_struct *tsk)
{ }
#define audit_enabled 0
#endif /* CONFIG_AUDIT */
static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
{
	audit_log_n_string(ab, buf, strlen(buf));
}

#endif
Commit	Line	Data
85c8721f	1	/* audit.h -- Auditing support
1da177e4 LT	2	*
	3	* Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
	4	* All Rights Reserved.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*
	20	* Written by Rickard E. (Rik) Faith <faith@redhat.com>
	21	*
	22	*/
1da177e4 LT	23	#ifndef _LINUX_AUDIT_H_
	24	#define _LINUX_AUDIT_H_
	25
f001e47f	26	#include <linux/sched.h>
c0a3a20b	27	#include <linux/ptrace.h>
607ca46e	28	#include <uapi/linux/audit.h>
1da177e4	29
c2f0c7c3 SG	30	struct audit_sig_info {
	31	uid_t uid;
	32	pid_t pid;
e1396065	33	char ctx[0];
c2f0c7c3 SG	34	};
c2f0c7c3 SG	35
1da177e4 LT	36	struct audit_buffer;
	37	struct audit_context;
	38	struct inode;
5bb289b5	39	struct netlink_skb_parms;
37721e1b	40	struct path;
473ae30b	41	struct linux_binprm;
20ca73bc GW	42	struct mq_attr;
20ca73bc GW	43	struct mqstat;
9d57a7f9 AD	44	struct audit_watch;
9d57a7f9 AD	45	struct audit_tree;
099dd235	46	struct sk_buff;
9d57a7f9 AD	47
	48	struct audit_krule {
	49	int vers_ops;
041d7b98	50	u32 pflags;
9d57a7f9 AD	51	u32 flags;
	52	u32 listnr;
	53	u32 action;
	54	u32 mask[AUDIT_BITMASK_SIZE];
	55	u32 buflen; /* for data alloc on list rules */
	56	u32 field_count;
	57	char filterkey; / ties events to rules */
	58	struct audit_field *fields;
	59	struct audit_field arch_f; / quick access to arch field */
	60	struct audit_field inode_f; / quick access to an inode field */
	61	struct audit_watch watch; / associated watch */
	62	struct audit_tree tree; / associated watched tree */
	63	struct list_head rlist; /* entry in audit_{watch,tree}.rules list */
e45aa212	64	struct list_head list; /* for AUDIT_LIST* purposes only */
0590b933	65	u64 prio;
9d57a7f9 AD	66	};
9d57a7f9 AD	67
041d7b98 RGB	68	/* Flag to indicate legacy AUDIT_LOGINUID unset usage */
	69	#define AUDIT_LOGINUID_LEGACY 0x1
	70
9d57a7f9 AD	71	struct audit_field {
9d57a7f9 AD	72	u32 type;
219ca394 RGB	73	union {
	74	u32 val;
	75	kuid_t uid;
	76	kgid_t gid;
	77	struct {
	78	char *lsm_str;
	79	void *lsm_rule;
	80	};
	81	};
9d57a7f9	82	u32 op;
9d57a7f9	83	};
1da177e4	84
b0fed402 EP	85	extern int is_audit_feature_set(int which);
b0fed402 EP	86
b915543b	87	extern int __init audit_register_class(int class, unsigned *list);
55669bfa	88	extern int audit_classify_syscall(int abi, unsigned syscall);
e54dc243	89	extern int audit_classify_arch(int arch);
4b588411 AT	90	/* only for compat system calls */
	91	extern unsigned compat_write_class[];
	92	extern unsigned compat_read_class[];
	93	extern unsigned compat_dir_class[];
	94	extern unsigned compat_chattr_class[];
	95	extern unsigned compat_signal_class[];
	96
	97	extern int __weak audit_classify_compat_syscall(int abi, unsigned syscall);
78e2e802 JL	98
	99	/* audit_names->type values */
	100	#define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
	101	#define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
bfcec708	102	#define AUDIT_TYPE_PARENT 2 /* a parent audit record */
4fa6b5ec JL	103	#define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
4fa6b5ec JL	104	#define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
78e2e802	105
2950fa9d CG	106	/* maximized args number that audit_socketcall can process */
	107	#define AUDITSC_ARGS 6
	108
91a27b2a JL	109	struct filename;
91a27b2a JL	110
4d3fb709 EP	111	extern void audit_log_session_info(struct audit_buffer *ab);
4d3fb709 EP	112
312103d6	113	#ifdef CONFIG_AUDIT_COMPAT_GENERIC
356750e3 EP	114	#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
	115	#else
	116	#define audit_is_compat(arch) false
	117	#endif
	118
1da177e4	119	#ifdef CONFIG_AUDITSYSCALL
a9ebe0b9 EP	120	#include <asm/syscall.h> /* for syscall_get_arch() */
a9ebe0b9 EP	121
1da177e4 LT	122	/* These are defined in auditsc.c */
	123	/* Public API */
	124	extern int audit_alloc(struct task_struct *task);
a4ff8dba	125	extern void __audit_free(struct task_struct *task);
b4f0d375	126	extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
b05d8447	127	unsigned long a2, unsigned long a3);
d7e7528b	128	extern void __audit_syscall_exit(int ret_success, long ret_value);
7ac86265	129	extern struct filename __audit_reusename(const __user char uptr);
91a27b2a JL	130	extern void __audit_getname(struct filename *name);
91a27b2a JL	131	extern void audit_putname(struct filename *name);
79f6530c JL	132
	133	#define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
	134	#define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
adb5c247	135	extern void __audit_inode(struct filename name, const struct dentry dentry,
79f6530c	136	unsigned int flags);
c43a25ab	137	extern void __audit_inode_child(const struct inode *parent,
4fa6b5ec JL	138	const struct dentry *dentry,
4fa6b5ec JL	139	const unsigned char type);
3dc1c1b2	140	extern void __audit_seccomp(unsigned long syscall, long signr, int code);
a5cb013d AV	141	extern void __audit_ptrace(struct task_struct *t);
a5cb013d AV	142
d51374ad AV	143	static inline int audit_dummy_context(void)
	144	{
	145	void *p = current->audit_context;
	146	return !p \|\| (int )p;
	147	}
a4ff8dba EP	148	static inline void audit_free(struct task_struct *task)
	149	{
	150	if (unlikely(task->audit_context))
	151	__audit_free(task);
	152	}
91397401	153	static inline void audit_syscall_entry(int major, unsigned long a0,
b05d8447 EP	154	unsigned long a1, unsigned long a2,
	155	unsigned long a3)
	156	{
cdee3904	157	if (unlikely(current->audit_context))
b4f0d375	158	__audit_syscall_entry(major, a0, a1, a2, a3);
b05d8447	159	}
d7e7528b EP	160	static inline void audit_syscall_exit(void *pt_regs)
	161	{
	162	if (unlikely(current->audit_context)) {
	163	int success = is_syscall_success(pt_regs);
06bdadd7	164	long return_code = regs_return_value(pt_regs);
d7e7528b EP	165
	166	__audit_syscall_exit(success, return_code);
	167	}
	168	}
7ac86265 JL	169	static inline struct filename audit_reusename(const __user char name)
	170	{
	171	if (unlikely(!audit_dummy_context()))
	172	return __audit_reusename(name);
	173	return NULL;
	174	}
91a27b2a	175	static inline void audit_getname(struct filename *name)
d8945bb5	176	{
5ac3a9c2	177	if (unlikely(!audit_dummy_context()))
d8945bb5 AV	178	__audit_getname(name);
d8945bb5 AV	179	}
79f6530c JL	180	static inline void audit_inode(struct filename *name,
79f6530c JL	181	const struct dentry *dentry,
bfcec708	182	unsigned int parent) {
79f6530c JL	183	if (unlikely(!audit_dummy_context())) {
	184	unsigned int flags = 0;
	185	if (parent)
	186	flags \|= AUDIT_INODE_PARENT;
	187	__audit_inode(name, dentry, flags);
	188	}
	189	}
	190	static inline void audit_inode_parent_hidden(struct filename *name,
	191	const struct dentry *dentry)
	192	{
5ac3a9c2	193	if (unlikely(!audit_dummy_context()))
79f6530c JL	194	__audit_inode(name, dentry,
79f6530c JL	195	AUDIT_INODE_PARENT \| AUDIT_INODE_HIDDEN);
73241ccc	196	}
c43a25ab	197	static inline void audit_inode_child(const struct inode *parent,
4fa6b5ec JL	198	const struct dentry *dentry,
4fa6b5ec JL	199	const unsigned char type) {
5ac3a9c2	200	if (unlikely(!audit_dummy_context()))
4fa6b5ec	201	__audit_inode_child(parent, dentry, type);
73241ccc	202	}
0a4ff8c2	203	void audit_core_dumps(long signr);
1da177e4	204
3dc1c1b2	205	static inline void audit_seccomp(unsigned long syscall, long signr, int code)
85e7bac3	206	{
7b9205bd KC	207	/* Force a record to be reported if a signal was delivered. */
7b9205bd KC	208	if (signr \|\| unlikely(!audit_dummy_context()))
3dc1c1b2	209	__audit_seccomp(syscall, signr, code);
85e7bac3 EP	210	}
85e7bac3 EP	211
a5cb013d AV	212	static inline void audit_ptrace(struct task_struct *t)
	213	{
	214	if (unlikely(!audit_dummy_context()))
	215	__audit_ptrace(t);
	216	}
	217
1da177e4	218	/* Private API (for audit.c only) */
bfb4496e	219	extern unsigned int audit_serial(void);
48887e63	220	extern int auditsc_get_stamp(struct audit_context *ctx,
bfb4496e	221	struct timespec t, unsigned int serial);
9321d526 KC	222	extern int audit_set_loginuid(kuid_t loginuid);
	223
	224	static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
	225	{
	226	return tsk->loginuid;
	227	}
	228
b6cfee4c	229	static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
9321d526 KC	230	{
	231	return tsk->sessionid;
	232	}
	233
a33e6751	234	extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
2570ebbd	235	extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
d9cfea91	236	extern void __audit_bprm(struct linux_binprm *bprm);
2950fa9d	237	extern int __audit_socketcall(int nargs, unsigned long *args);
07c49417	238	extern int __audit_sockaddr(int len, void *addr);
157cf649	239	extern void __audit_fd_pair(int fd1, int fd2);
df0a4283	240	extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
c32c8af4	241	extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
20114f71	242	extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
7392906e	243	extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
d84f4f99 DH	244	extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
	245	const struct cred *new,
	246	const struct cred *old);
ca24a23e	247	extern void __audit_log_capset(const struct cred new, const struct cred old);
120a795d	248	extern void __audit_mmap_fd(int fd, int flags);
d8945bb5	249
a33e6751	250	static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
d8945bb5	251	{
5ac3a9c2	252	if (unlikely(!audit_dummy_context()))
a33e6751	253	__audit_ipc_obj(ipcp);
db349509	254	}
157cf649	255	static inline void audit_fd_pair(int fd1, int fd2)
d8945bb5	256	{
5ac3a9c2	257	if (unlikely(!audit_dummy_context()))
157cf649	258	__audit_fd_pair(fd1, fd2);
d8945bb5	259	}
2570ebbd	260	static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
20ca73bc	261	{
5ac3a9c2	262	if (unlikely(!audit_dummy_context()))
e816f370	263	__audit_ipc_set_perm(qbytes, uid, gid, mode);
20ca73bc	264	}
9410d228	265	static inline void audit_bprm(struct linux_binprm *bprm)
07c49417 EP	266	{
07c49417 EP	267	if (unlikely(!audit_dummy_context()))
d9cfea91	268	__audit_bprm(bprm);
07c49417	269	}
2950fa9d	270	static inline int audit_socketcall(int nargs, unsigned long *args)
07c49417 EP	271	{
07c49417 EP	272	if (unlikely(!audit_dummy_context()))
2950fa9d CG	273	return __audit_socketcall(nargs, args);
2950fa9d CG	274	return 0;
07c49417 EP	275	}
	276	static inline int audit_sockaddr(int len, void *addr)
	277	{
	278	if (unlikely(!audit_dummy_context()))
	279	return __audit_sockaddr(len, addr);
	280	return 0;
	281	}
df0a4283	282	static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
20ca73bc	283	{
5ac3a9c2	284	if (unlikely(!audit_dummy_context()))
564f6993	285	__audit_mq_open(oflag, mode, attr);
20ca73bc	286	}
c32c8af4	287	static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
20ca73bc	288	{
5ac3a9c2	289	if (unlikely(!audit_dummy_context()))
c32c8af4	290	__audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
20ca73bc	291	}
20114f71	292	static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
20ca73bc	293	{
5ac3a9c2	294	if (unlikely(!audit_dummy_context()))
20114f71	295	__audit_mq_notify(mqdes, notification);
20ca73bc	296	}
7392906e	297	static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
20ca73bc	298	{
5ac3a9c2	299	if (unlikely(!audit_dummy_context()))
7392906e	300	__audit_mq_getsetattr(mqdes, mqstat);
20ca73bc	301	}
3fc689e9	302
d84f4f99 DH	303	static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
	304	const struct cred *new,
	305	const struct cred *old)
3fc689e9 EP	306	{
3fc689e9 EP	307	if (unlikely(!audit_dummy_context()))
d84f4f99 DH	308	return __audit_log_bprm_fcaps(bprm, new, old);
d84f4f99 DH	309	return 0;
3fc689e9 EP	310	}
3fc689e9 EP	311
ca24a23e	312	static inline void audit_log_capset(const struct cred *new,
d84f4f99	313	const struct cred *old)
e68b75a0 EP	314	{
e68b75a0 EP	315	if (unlikely(!audit_dummy_context()))
ca24a23e	316	__audit_log_capset(new, old);
e68b75a0 EP	317	}
e68b75a0 EP	318
120a795d AV	319	static inline void audit_mmap_fd(int fd, int flags)
	320	{
	321	if (unlikely(!audit_dummy_context()))
	322	__audit_mmap_fd(fd, flags);
	323	}
	324
471a5c7c	325	extern int audit_n_rules;
e54dc243	326	extern int audit_signals;
d7e7528b	327	#else /* CONFIG_AUDITSYSCALL */
9321d526 KC	328	static inline int audit_alloc(struct task_struct *task)
	329	{
	330	return 0;
	331	}
	332	static inline void audit_free(struct task_struct *task)
	333	{ }
91397401	334	static inline void audit_syscall_entry(int major, unsigned long a0,
9321d526 KC	335	unsigned long a1, unsigned long a2,
	336	unsigned long a3)
	337	{ }
	338	static inline void audit_syscall_exit(void *pt_regs)
	339	{ }
	340	static inline int audit_dummy_context(void)
	341	{
	342	return 1;
	343	}
7ac86265 JL	344	static inline struct filename audit_reusename(const __user char name)
	345	{
	346	return NULL;
	347	}
91a27b2a	348	static inline void audit_getname(struct filename *name)
9321d526	349	{ }
91a27b2a	350	static inline void audit_putname(struct filename *name)
9321d526	351	{ }
adb5c247 JL	352	static inline void __audit_inode(struct filename *name,
adb5c247 JL	353	const struct dentry *dentry,
79f6530c	354	unsigned int flags)
9321d526	355	{ }
c43a25ab	356	static inline void __audit_inode_child(const struct inode *parent,
4fa6b5ec JL	357	const struct dentry *dentry,
4fa6b5ec JL	358	const unsigned char type)
9321d526	359	{ }
adb5c247 JL	360	static inline void audit_inode(struct filename *name,
adb5c247 JL	361	const struct dentry *dentry,
bfcec708	362	unsigned int parent)
9321d526	363	{ }
79f6530c JL	364	static inline void audit_inode_parent_hidden(struct filename *name,
	365	const struct dentry *dentry)
	366	{ }
c43a25ab	367	static inline void audit_inode_child(const struct inode *parent,
4fa6b5ec JL	368	const struct dentry *dentry,
4fa6b5ec JL	369	const unsigned char type)
9321d526 KC	370	{ }
	371	static inline void audit_core_dumps(long signr)
	372	{ }
	373	static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
	374	{ }
	375	static inline void audit_seccomp(unsigned long syscall, long signr, int code)
	376	{ }
	377	static inline int auditsc_get_stamp(struct audit_context *ctx,
	378	struct timespec t, unsigned int serial)
	379	{
	380	return 0;
	381	}
	382	static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
	383	{
	384	return INVALID_UID;
	385	}
b6cfee4c	386	static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
9321d526 KC	387	{
	388	return -1;
	389	}
9321d526 KC	390	static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
	391	{ }
	392	static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
	393	gid_t gid, umode_t mode)
	394	{ }
9410d228 RGB	395	static inline void audit_bprm(struct linux_binprm *bprm)
9410d228 RGB	396	{ }
2950fa9d CG	397	static inline int audit_socketcall(int nargs, unsigned long *args)
	398	{
	399	return 0;
	400	}
9321d526 KC	401	static inline void audit_fd_pair(int fd1, int fd2)
	402	{ }
	403	static inline int audit_sockaddr(int len, void *addr)
	404	{
	405	return 0;
	406	}
	407	static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
	408	{ }
	409	static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
	410	unsigned int msg_prio,
	411	const struct timespec *abs_timeout)
	412	{ }
	413	static inline void audit_mq_notify(mqd_t mqdes,
	414	const struct sigevent *notification)
	415	{ }
	416	static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
	417	{ }
	418	static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
	419	const struct cred *new,
	420	const struct cred *old)
	421	{
	422	return 0;
	423	}
ca24a23e EB	424	static inline void audit_log_capset(const struct cred *new,
ca24a23e EB	425	const struct cred *old)
9321d526 KC	426	{ }
	427	static inline void audit_mmap_fd(int fd, int flags)
	428	{ }
	429	static inline void audit_ptrace(struct task_struct *t)
	430	{ }
471a5c7c	431	#define audit_n_rules 0
e54dc243	432	#define audit_signals 0
d7e7528b	433	#endif /* CONFIG_AUDITSYSCALL */
1da177e4	434
780a7654 EB	435	static inline bool audit_loginuid_set(struct task_struct *tsk)
	436	{
	437	return uid_valid(audit_get_loginuid(tsk));
	438	}
	439
1da177e4 LT	440	#ifdef CONFIG_AUDIT
	441	/* These are defined in audit.c */
	442	/* Public API */
b9075fa9 JP	443	extern __printf(4, 5)
	444	void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	445	const char *fmt, ...);
1da177e4	446
9796fdd8	447	extern struct audit_buffer audit_log_start(struct audit_context ctx, gfp_t gfp_mask, int type);
b9075fa9 JP	448	extern __printf(2, 3)
b9075fa9 JP	449	void audit_log_format(struct audit_buffer ab, const char fmt, ...);
1da177e4	450	extern void audit_log_end(struct audit_buffer *ab);
de6bbd1d EP	451	extern int audit_string_contains_control(const char *string,
de6bbd1d EP	452	size_t len);
b556f8ad EP	453	extern void audit_log_n_hex(struct audit_buffer *ab,
	454	const unsigned char *buf,
	455	size_t len);
	456	extern void audit_log_n_string(struct audit_buffer *ab,
	457	const char *buf,
	458	size_t n);
b556f8ad EP	459	extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
	460	const char *string,
	461	size_t n);
de6bbd1d	462	extern void audit_log_untrustedstring(struct audit_buffer *ab,
83c7d091	463	const char *string);
1da177e4 LT	464	extern void audit_log_d_path(struct audit_buffer *ab,
1da177e4 LT	465	const char *prefix,
66b3fad3	466	const struct path *path);
9d960985 EP	467	extern void audit_log_key(struct audit_buffer *ab,
9d960985 EP	468	char *key);
a51d9eaa KC	469	extern void audit_log_link_denied(const char *operation,
a51d9eaa KC	470	struct path *link);
522ed776	471	extern void audit_log_lost(const char *message);
131ad62d MDF	472	#ifdef CONFIG_SECURITY
	473	extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
	474	#else
9321d526 KC	475	static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
9321d526 KC	476	{ }
131ad62d MDF	477	#endif
131ad62d MDF	478
b24a30a7 EP	479	extern int audit_log_task_context(struct audit_buffer *ab);
	480	extern void audit_log_task_info(struct audit_buffer *ab,
	481	struct task_struct *tsk);
	482
9d57a7f9 AD	483	extern int audit_update_lsm_rules(void);
9d57a7f9 AD	484
fe7752ba	485	/* Private API (for audit.c only) */
62062cf8	486	extern int audit_filter_user(int type);
fe7752ba	487	extern int audit_filter_type(int type);
ce0d9f04	488	extern int audit_rule_change(int type, __u32 portid, int seq,
dc9eb698	489	void *data, size_t datasz);
099dd235	490	extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
ce0d9f04	491
3e1d0bb6	492	extern u32 audit_enabled;
9321d526 KC	493	#else /* CONFIG_AUDIT */
	494	static inline __printf(4, 5)
	495	void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	496	const char *fmt, ...)
	497	{ }
	498	static inline struct audit_buffer audit_log_start(struct audit_context ctx,
	499	gfp_t gfp_mask, int type)
	500	{
	501	return NULL;
	502	}
	503	static inline __printf(2, 3)
	504	void audit_log_format(struct audit_buffer ab, const char fmt, ...)
	505	{ }
	506	static inline void audit_log_end(struct audit_buffer *ab)
	507	{ }
	508	static inline void audit_log_n_hex(struct audit_buffer *ab,
	509	const unsigned char *buf, size_t len)
	510	{ }
	511	static inline void audit_log_n_string(struct audit_buffer *ab,
	512	const char *buf, size_t n)
	513	{ }
	514	static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
	515	const char *string, size_t n)
	516	{ }
	517	static inline void audit_log_untrustedstring(struct audit_buffer *ab,
	518	const char *string)
	519	{ }
	520	static inline void audit_log_d_path(struct audit_buffer *ab,
	521	const char *prefix,
	522	const struct path *path)
	523	{ }
	524	static inline void audit_log_key(struct audit_buffer ab, char key)
	525	{ }
	526	static inline void audit_log_link_denied(const char *string,
	527	const struct path *link)
	528	{ }
	529	static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
	530	{ }
b24a30a7 EP	531	static inline int audit_log_task_context(struct audit_buffer *ab)
	532	{
	533	return 0;
	534	}
	535	static inline void audit_log_task_info(struct audit_buffer *ab,
	536	struct task_struct *tsk)
	537	{ }
522ed776	538	#define audit_enabled 0
9321d526 KC	539	#endif /* CONFIG_AUDIT */
	540	static inline void audit_log_string(struct audit_buffer ab, const char buf)
	541	{
	542	audit_log_n_string(ab, buf, strlen(buf));
	543	}
	544
1da177e4	545	#endif