[deliverable/linux.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			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;
	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 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;
	50	u32 flags;
	51	u32 listnr;
	52	u32 action;
	53	u32 mask[AUDIT_BITMASK_SIZE];
	54	u32 buflen; /* for data alloc on list rules */
	55	u32 field_count;
	56	char filterkey; / ties events to rules */
	57	struct audit_field *fields;
	58	struct audit_field arch_f; / quick access to arch field */
	59	struct audit_field inode_f; / quick access to an inode field */
	60	struct audit_watch watch; / associated watch */
	61	struct audit_tree tree; / associated watched tree */
	62	struct list_head rlist; /* entry in audit_{watch,tree}.rules list */
e45aa212	63	struct list_head list; /* for AUDIT_LIST* purposes only */
0590b933	64	u64 prio;
9d57a7f9 AD	65	};
	66
	67	struct audit_field {
	68	u32 type;
219ca394 RGB	69	union {
	70	u32 val;
	71	kuid_t uid;
	72	kgid_t gid;
	73	struct {
	74	char *lsm_str;
	75	void *lsm_rule;
	76	};
	77	};
9d57a7f9	78	u32 op;
9d57a7f9	79	};
1da177e4	80
b0fed402 EP	81	extern int is_audit_feature_set(int which);
b0fed402 EP	82
b915543b	83	extern int __init audit_register_class(int class, unsigned *list);
55669bfa	84	extern int audit_classify_syscall(int abi, unsigned syscall);
e54dc243	85	extern int audit_classify_arch(int arch);
4b588411 AT	86	/* only for compat system calls */
	87	extern unsigned compat_write_class[];
	88	extern unsigned compat_read_class[];
	89	extern unsigned compat_dir_class[];
	90	extern unsigned compat_chattr_class[];
	91	extern unsigned compat_signal_class[];
	92
9e8beeb7	93	extern int audit_classify_compat_syscall(int abi, unsigned syscall);
78e2e802 JL	94
	95	/* audit_names->type values */
	96	#define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
	97	#define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
bfcec708	98	#define AUDIT_TYPE_PARENT 2 /* a parent audit record */
4fa6b5ec JL	99	#define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
4fa6b5ec JL	100	#define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
78e2e802	101
2950fa9d CG	102	/* maximized args number that audit_socketcall can process */
	103	#define AUDITSC_ARGS 6
	104
91a27b2a JL	105	struct filename;
91a27b2a JL	106
4d3fb709 EP	107	extern void audit_log_session_info(struct audit_buffer *ab);
4d3fb709 EP	108
312103d6	109	#ifdef CONFIG_AUDIT_COMPAT_GENERIC
356750e3 EP	110	#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
	111	#else
	112	#define audit_is_compat(arch) false
	113	#endif
	114
1da177e4	115	#ifdef CONFIG_AUDITSYSCALL
a9ebe0b9 EP	116	#include <asm/syscall.h> /* for syscall_get_arch() */
a9ebe0b9 EP	117
1da177e4 LT	118	/* These are defined in auditsc.c */
	119	/* Public API */
	120	extern int audit_alloc(struct task_struct *task);
a4ff8dba	121	extern void __audit_free(struct task_struct *task);
b4f0d375	122	extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
b05d8447	123	unsigned long a2, unsigned long a3);
d7e7528b	124	extern void __audit_syscall_exit(int ret_success, long ret_value);
7ac86265	125	extern struct filename __audit_reusename(const __user char uptr);
91a27b2a JL	126	extern void __audit_getname(struct filename *name);
91a27b2a JL	127	extern void audit_putname(struct filename *name);
79f6530c JL	128
	129	#define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
	130	#define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
adb5c247	131	extern void __audit_inode(struct filename name, const struct dentry dentry,
79f6530c	132	unsigned int flags);
c43a25ab	133	extern void __audit_inode_child(const struct inode *parent,
4fa6b5ec JL	134	const struct dentry *dentry,
4fa6b5ec JL	135	const unsigned char type);
3dc1c1b2	136	extern void __audit_seccomp(unsigned long syscall, long signr, int code);
a5cb013d AV	137	extern void __audit_ptrace(struct task_struct *t);
a5cb013d AV	138
d51374ad AV	139	static inline int audit_dummy_context(void)
	140	{
	141	void *p = current->audit_context;
	142	return !p \|\| (int )p;
	143	}
a4ff8dba EP	144	static inline void audit_free(struct task_struct *task)
	145	{
	146	if (unlikely(task->audit_context))
	147	__audit_free(task);
	148	}
91397401	149	static inline void audit_syscall_entry(int major, unsigned long a0,
b05d8447 EP	150	unsigned long a1, unsigned long a2,
	151	unsigned long a3)
	152	{
cdee3904	153	if (unlikely(current->audit_context))
b4f0d375	154	__audit_syscall_entry(major, a0, a1, a2, a3);
b05d8447	155	}
d7e7528b EP	156	static inline void audit_syscall_exit(void *pt_regs)
	157	{
	158	if (unlikely(current->audit_context)) {
	159	int success = is_syscall_success(pt_regs);
06bdadd7	160	long return_code = regs_return_value(pt_regs);
d7e7528b EP	161
	162	__audit_syscall_exit(success, return_code);
	163	}
	164	}
7ac86265 JL	165	static inline struct filename audit_reusename(const __user char name)
	166	{
	167	if (unlikely(!audit_dummy_context()))
	168	return __audit_reusename(name);
	169	return NULL;
	170	}
91a27b2a	171	static inline void audit_getname(struct filename *name)
d8945bb5	172	{
5ac3a9c2	173	if (unlikely(!audit_dummy_context()))
d8945bb5 AV	174	__audit_getname(name);
d8945bb5 AV	175	}
79f6530c JL	176	static inline void audit_inode(struct filename *name,
79f6530c JL	177	const struct dentry *dentry,
bfcec708	178	unsigned int parent) {
79f6530c JL	179	if (unlikely(!audit_dummy_context())) {
	180	unsigned int flags = 0;
	181	if (parent)
	182	flags \|= AUDIT_INODE_PARENT;
	183	__audit_inode(name, dentry, flags);
	184	}
	185	}
	186	static inline void audit_inode_parent_hidden(struct filename *name,
	187	const struct dentry *dentry)
	188	{
5ac3a9c2	189	if (unlikely(!audit_dummy_context()))
79f6530c JL	190	__audit_inode(name, dentry,
79f6530c JL	191	AUDIT_INODE_PARENT \| AUDIT_INODE_HIDDEN);
73241ccc	192	}
c43a25ab	193	static inline void audit_inode_child(const struct inode *parent,
4fa6b5ec JL	194	const struct dentry *dentry,
4fa6b5ec JL	195	const unsigned char type) {
5ac3a9c2	196	if (unlikely(!audit_dummy_context()))
4fa6b5ec	197	__audit_inode_child(parent, dentry, type);
73241ccc	198	}
0a4ff8c2	199	void audit_core_dumps(long signr);
1da177e4	200
3dc1c1b2	201	static inline void audit_seccomp(unsigned long syscall, long signr, int code)
85e7bac3	202	{
7b9205bd KC	203	/* Force a record to be reported if a signal was delivered. */
7b9205bd KC	204	if (signr \|\| unlikely(!audit_dummy_context()))
3dc1c1b2	205	__audit_seccomp(syscall, signr, code);
85e7bac3 EP	206	}
85e7bac3 EP	207
a5cb013d AV	208	static inline void audit_ptrace(struct task_struct *t)
	209	{
	210	if (unlikely(!audit_dummy_context()))
	211	__audit_ptrace(t);
	212	}
	213
1da177e4	214	/* Private API (for audit.c only) */
bfb4496e	215	extern unsigned int audit_serial(void);
48887e63	216	extern int auditsc_get_stamp(struct audit_context *ctx,
bfb4496e	217	struct timespec t, unsigned int serial);
9321d526 KC	218	extern int audit_set_loginuid(kuid_t loginuid);
	219
	220	static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
	221	{
	222	return tsk->loginuid;
	223	}
	224
b6cfee4c	225	static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
9321d526 KC	226	{
	227	return tsk->sessionid;
	228	}
	229
a33e6751	230	extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
2570ebbd	231	extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
d9cfea91	232	extern void __audit_bprm(struct linux_binprm *bprm);
2950fa9d	233	extern int __audit_socketcall(int nargs, unsigned long *args);
07c49417	234	extern int __audit_sockaddr(int len, void *addr);
157cf649	235	extern void __audit_fd_pair(int fd1, int fd2);
df0a4283	236	extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
c32c8af4	237	extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
20114f71	238	extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
7392906e	239	extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
d84f4f99 DH	240	extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
	241	const struct cred *new,
	242	const struct cred *old);
ca24a23e	243	extern void __audit_log_capset(const struct cred new, const struct cred old);
120a795d	244	extern void __audit_mmap_fd(int fd, int flags);
d8945bb5	245
a33e6751	246	static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
d8945bb5	247	{
5ac3a9c2	248	if (unlikely(!audit_dummy_context()))
a33e6751	249	__audit_ipc_obj(ipcp);
db349509	250	}
157cf649	251	static inline void audit_fd_pair(int fd1, int fd2)
d8945bb5	252	{
5ac3a9c2	253	if (unlikely(!audit_dummy_context()))
157cf649	254	__audit_fd_pair(fd1, fd2);
d8945bb5	255	}
2570ebbd	256	static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
20ca73bc	257	{
5ac3a9c2	258	if (unlikely(!audit_dummy_context()))
e816f370	259	__audit_ipc_set_perm(qbytes, uid, gid, mode);
20ca73bc	260	}
9410d228	261	static inline void audit_bprm(struct linux_binprm *bprm)
07c49417 EP	262	{
07c49417 EP	263	if (unlikely(!audit_dummy_context()))
d9cfea91	264	__audit_bprm(bprm);
07c49417	265	}
2950fa9d	266	static inline int audit_socketcall(int nargs, unsigned long *args)
07c49417 EP	267	{
07c49417 EP	268	if (unlikely(!audit_dummy_context()))
2950fa9d CG	269	return __audit_socketcall(nargs, args);
2950fa9d CG	270	return 0;
07c49417 EP	271	}
	272	static inline int audit_sockaddr(int len, void *addr)
	273	{
	274	if (unlikely(!audit_dummy_context()))
	275	return __audit_sockaddr(len, addr);
	276	return 0;
	277	}
df0a4283	278	static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
20ca73bc	279	{
5ac3a9c2	280	if (unlikely(!audit_dummy_context()))
564f6993	281	__audit_mq_open(oflag, mode, attr);
20ca73bc	282	}
c32c8af4	283	static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
20ca73bc	284	{
5ac3a9c2	285	if (unlikely(!audit_dummy_context()))
c32c8af4	286	__audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
20ca73bc	287	}
20114f71	288	static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
20ca73bc	289	{
5ac3a9c2	290	if (unlikely(!audit_dummy_context()))
20114f71	291	__audit_mq_notify(mqdes, notification);
20ca73bc	292	}
7392906e	293	static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
20ca73bc	294	{
5ac3a9c2	295	if (unlikely(!audit_dummy_context()))
7392906e	296	__audit_mq_getsetattr(mqdes, mqstat);
20ca73bc	297	}
3fc689e9	298
d84f4f99 DH	299	static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
	300	const struct cred *new,
	301	const struct cred *old)
3fc689e9 EP	302	{
3fc689e9 EP	303	if (unlikely(!audit_dummy_context()))
d84f4f99 DH	304	return __audit_log_bprm_fcaps(bprm, new, old);
d84f4f99 DH	305	return 0;
3fc689e9 EP	306	}
3fc689e9 EP	307
ca24a23e	308	static inline void audit_log_capset(const struct cred *new,
d84f4f99	309	const struct cred *old)
e68b75a0 EP	310	{
e68b75a0 EP	311	if (unlikely(!audit_dummy_context()))
ca24a23e	312	__audit_log_capset(new, old);
e68b75a0 EP	313	}
e68b75a0 EP	314
120a795d AV	315	static inline void audit_mmap_fd(int fd, int flags)
	316	{
	317	if (unlikely(!audit_dummy_context()))
	318	__audit_mmap_fd(fd, flags);
	319	}
	320
471a5c7c	321	extern int audit_n_rules;
e54dc243	322	extern int audit_signals;
d7e7528b	323	#else /* CONFIG_AUDITSYSCALL */
9321d526 KC	324	static inline int audit_alloc(struct task_struct *task)
	325	{
	326	return 0;
	327	}
	328	static inline void audit_free(struct task_struct *task)
	329	{ }
91397401	330	static inline void audit_syscall_entry(int major, unsigned long a0,
9321d526 KC	331	unsigned long a1, unsigned long a2,
	332	unsigned long a3)
	333	{ }
	334	static inline void audit_syscall_exit(void *pt_regs)
	335	{ }
	336	static inline int audit_dummy_context(void)
	337	{
	338	return 1;
	339	}
7ac86265 JL	340	static inline struct filename audit_reusename(const __user char name)
	341	{
	342	return NULL;
	343	}
91a27b2a	344	static inline void audit_getname(struct filename *name)
9321d526	345	{ }
91a27b2a	346	static inline void audit_putname(struct filename *name)
9321d526	347	{ }
adb5c247 JL	348	static inline void __audit_inode(struct filename *name,
adb5c247 JL	349	const struct dentry *dentry,
79f6530c	350	unsigned int flags)
9321d526	351	{ }
c43a25ab	352	static inline void __audit_inode_child(const struct inode *parent,
4fa6b5ec JL	353	const struct dentry *dentry,
4fa6b5ec JL	354	const unsigned char type)
9321d526	355	{ }
adb5c247 JL	356	static inline void audit_inode(struct filename *name,
adb5c247 JL	357	const struct dentry *dentry,
bfcec708	358	unsigned int parent)
9321d526	359	{ }
79f6530c JL	360	static inline void audit_inode_parent_hidden(struct filename *name,
	361	const struct dentry *dentry)
	362	{ }
c43a25ab	363	static inline void audit_inode_child(const struct inode *parent,
4fa6b5ec JL	364	const struct dentry *dentry,
4fa6b5ec JL	365	const unsigned char type)
9321d526 KC	366	{ }
	367	static inline void audit_core_dumps(long signr)
	368	{ }
	369	static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
	370	{ }
	371	static inline void audit_seccomp(unsigned long syscall, long signr, int code)
	372	{ }
	373	static inline int auditsc_get_stamp(struct audit_context *ctx,
	374	struct timespec t, unsigned int serial)
	375	{
	376	return 0;
	377	}
	378	static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
	379	{
	380	return INVALID_UID;
	381	}
b6cfee4c	382	static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
9321d526 KC	383	{
	384	return -1;
	385	}
9321d526 KC	386	static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
	387	{ }
	388	static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
	389	gid_t gid, umode_t mode)
	390	{ }
9410d228 RGB	391	static inline void audit_bprm(struct linux_binprm *bprm)
9410d228 RGB	392	{ }
2950fa9d CG	393	static inline int audit_socketcall(int nargs, unsigned long *args)
	394	{
	395	return 0;
	396	}
9321d526 KC	397	static inline void audit_fd_pair(int fd1, int fd2)
	398	{ }
	399	static inline int audit_sockaddr(int len, void *addr)
	400	{
	401	return 0;
	402	}
	403	static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
	404	{ }
	405	static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
	406	unsigned int msg_prio,
	407	const struct timespec *abs_timeout)
	408	{ }
	409	static inline void audit_mq_notify(mqd_t mqdes,
	410	const struct sigevent *notification)
	411	{ }
	412	static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
	413	{ }
	414	static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
	415	const struct cred *new,
	416	const struct cred *old)
	417	{
	418	return 0;
	419	}
ca24a23e EB	420	static inline void audit_log_capset(const struct cred *new,
ca24a23e EB	421	const struct cred *old)
9321d526 KC	422	{ }
	423	static inline void audit_mmap_fd(int fd, int flags)
	424	{ }
	425	static inline void audit_ptrace(struct task_struct *t)
	426	{ }
471a5c7c	427	#define audit_n_rules 0
e54dc243	428	#define audit_signals 0
d7e7528b	429	#endif /* CONFIG_AUDITSYSCALL */
1da177e4	430
780a7654 EB	431	static inline bool audit_loginuid_set(struct task_struct *tsk)
	432	{
	433	return uid_valid(audit_get_loginuid(tsk));
	434	}
	435
1da177e4 LT	436	#ifdef CONFIG_AUDIT
	437	/* These are defined in audit.c */
	438	/* Public API */
b9075fa9 JP	439	extern __printf(4, 5)
	440	void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	441	const char *fmt, ...);
1da177e4	442
9796fdd8	443	extern struct audit_buffer audit_log_start(struct audit_context ctx, gfp_t gfp_mask, int type);
b9075fa9 JP	444	extern __printf(2, 3)
b9075fa9 JP	445	void audit_log_format(struct audit_buffer ab, const char fmt, ...);
1da177e4	446	extern void audit_log_end(struct audit_buffer *ab);
de6bbd1d EP	447	extern int audit_string_contains_control(const char *string,
de6bbd1d EP	448	size_t len);
b556f8ad EP	449	extern void audit_log_n_hex(struct audit_buffer *ab,
	450	const unsigned char *buf,
	451	size_t len);
	452	extern void audit_log_n_string(struct audit_buffer *ab,
	453	const char *buf,
	454	size_t n);
b556f8ad EP	455	extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
	456	const char *string,
	457	size_t n);
de6bbd1d	458	extern void audit_log_untrustedstring(struct audit_buffer *ab,
83c7d091	459	const char *string);
1da177e4 LT	460	extern void audit_log_d_path(struct audit_buffer *ab,
1da177e4 LT	461	const char *prefix,
66b3fad3	462	const struct path *path);
9d960985 EP	463	extern void audit_log_key(struct audit_buffer *ab,
9d960985 EP	464	char *key);
a51d9eaa KC	465	extern void audit_log_link_denied(const char *operation,
a51d9eaa KC	466	struct path *link);
522ed776	467	extern void audit_log_lost(const char *message);
131ad62d MDF	468	#ifdef CONFIG_SECURITY
	469	extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
	470	#else
9321d526 KC	471	static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
9321d526 KC	472	{ }
131ad62d MDF	473	#endif
131ad62d MDF	474
b24a30a7 EP	475	extern int audit_log_task_context(struct audit_buffer *ab);
	476	extern void audit_log_task_info(struct audit_buffer *ab,
	477	struct task_struct *tsk);
	478
9d57a7f9 AD	479	extern int audit_update_lsm_rules(void);
9d57a7f9 AD	480
fe7752ba	481	/* Private API (for audit.c only) */
62062cf8	482	extern int audit_filter_user(int type);
fe7752ba	483	extern int audit_filter_type(int type);
ce0d9f04	484	extern int audit_rule_change(int type, __u32 portid, int seq,
dc9eb698	485	void *data, size_t datasz);
099dd235	486	extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
ce0d9f04	487
3e1d0bb6	488	extern u32 audit_enabled;
9321d526 KC	489	#else /* CONFIG_AUDIT */
	490	static inline __printf(4, 5)
	491	void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	492	const char *fmt, ...)
	493	{ }
	494	static inline struct audit_buffer audit_log_start(struct audit_context ctx,
	495	gfp_t gfp_mask, int type)
	496	{
	497	return NULL;
	498	}
	499	static inline __printf(2, 3)
	500	void audit_log_format(struct audit_buffer ab, const char fmt, ...)
	501	{ }
	502	static inline void audit_log_end(struct audit_buffer *ab)
	503	{ }
	504	static inline void audit_log_n_hex(struct audit_buffer *ab,
	505	const unsigned char *buf, size_t len)
	506	{ }
	507	static inline void audit_log_n_string(struct audit_buffer *ab,
	508	const char *buf, size_t n)
	509	{ }
	510	static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
	511	const char *string, size_t n)
	512	{ }
	513	static inline void audit_log_untrustedstring(struct audit_buffer *ab,
	514	const char *string)
	515	{ }
	516	static inline void audit_log_d_path(struct audit_buffer *ab,
	517	const char *prefix,
	518	const struct path *path)
	519	{ }
	520	static inline void audit_log_key(struct audit_buffer ab, char key)
	521	{ }
	522	static inline void audit_log_link_denied(const char *string,
	523	const struct path *link)
	524	{ }
	525	static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
	526	{ }
b24a30a7 EP	527	static inline int audit_log_task_context(struct audit_buffer *ab)
	528	{
	529	return 0;
	530	}
	531	static inline void audit_log_task_info(struct audit_buffer *ab,
	532	struct task_struct *tsk)
	533	{ }
522ed776	534	#define audit_enabled 0
9321d526 KC	535	#endif /* CONFIG_AUDIT */
	536	static inline void audit_log_string(struct audit_buffer ab, const char buf)
	537	{
	538	audit_log_n_string(ab, buf, strlen(buf));
	539	}
	540
1da177e4	541	#endif