[mirror_ubuntu-bionic-kernel.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;
	u32				val;
	kuid_t				uid;
	kgid_t				gid;
	u32				op;
	char				*lsm_str;
	void				*lsm_rule;
};

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
/* 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 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 arch, int major, unsigned long a0,
				       unsigned long a1, unsigned long a2,
				       unsigned long a3)
{
	if (unlikely(current->audit_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);
		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 arch, 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;
	69	u32 val;
ca57ec0f EB	70	kuid_t uid;
ca57ec0f EB	71	kgid_t gid;
9d57a7f9	72	u32 op;
04305e4a AD	73	char *lsm_str;
04305e4a AD	74	void *lsm_rule;
9d57a7f9	75	};
1da177e4	76
b0fed402 EP	77	extern int is_audit_feature_set(int which);
b0fed402 EP	78
b915543b	79	extern int __init audit_register_class(int class, unsigned *list);
55669bfa	80	extern int audit_classify_syscall(int abi, unsigned syscall);
e54dc243	81	extern int audit_classify_arch(int arch);
4b588411 AT	82	/* only for compat system calls */
	83	extern unsigned compat_write_class[];
	84	extern unsigned compat_read_class[];
	85	extern unsigned compat_dir_class[];
	86	extern unsigned compat_chattr_class[];
	87	extern unsigned compat_signal_class[];
	88
	89	extern int __weak audit_classify_compat_syscall(int abi, unsigned syscall);
78e2e802 JL	90
	91	/* audit_names->type values */
	92	#define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
	93	#define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
bfcec708	94	#define AUDIT_TYPE_PARENT 2 /* a parent audit record */
4fa6b5ec JL	95	#define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
4fa6b5ec JL	96	#define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
78e2e802	97
2950fa9d CG	98	/* maximized args number that audit_socketcall can process */
	99	#define AUDITSC_ARGS 6
	100
91a27b2a JL	101	struct filename;
91a27b2a JL	102
4d3fb709 EP	103	extern void audit_log_session_info(struct audit_buffer *ab);
4d3fb709 EP	104
312103d6	105	#ifdef CONFIG_AUDIT_COMPAT_GENERIC
356750e3 EP	106	#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
	107	#else
	108	#define audit_is_compat(arch) false
	109	#endif
	110
1da177e4 LT	111	#ifdef CONFIG_AUDITSYSCALL
	112	/* These are defined in auditsc.c */
	113	/* Public API */
	114	extern int audit_alloc(struct task_struct *task);
a4ff8dba	115	extern void __audit_free(struct task_struct *task);
b05d8447 EP	116	extern void __audit_syscall_entry(int arch,
	117	int major, unsigned long a0, unsigned long a1,
	118	unsigned long a2, unsigned long a3);
d7e7528b	119	extern void __audit_syscall_exit(int ret_success, long ret_value);
7ac86265	120	extern struct filename __audit_reusename(const __user char uptr);
91a27b2a JL	121	extern void __audit_getname(struct filename *name);
91a27b2a JL	122	extern void audit_putname(struct filename *name);
79f6530c JL	123
	124	#define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
	125	#define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
adb5c247	126	extern void __audit_inode(struct filename name, const struct dentry dentry,
79f6530c	127	unsigned int flags);
c43a25ab	128	extern void __audit_inode_child(const struct inode *parent,
4fa6b5ec JL	129	const struct dentry *dentry,
4fa6b5ec JL	130	const unsigned char type);
3dc1c1b2	131	extern void __audit_seccomp(unsigned long syscall, long signr, int code);
a5cb013d AV	132	extern void __audit_ptrace(struct task_struct *t);
a5cb013d AV	133
d51374ad AV	134	static inline int audit_dummy_context(void)
	135	{
	136	void *p = current->audit_context;
	137	return !p \|\| (int )p;
	138	}
a4ff8dba EP	139	static inline void audit_free(struct task_struct *task)
	140	{
	141	if (unlikely(task->audit_context))
	142	__audit_free(task);
	143	}
b05d8447 EP	144	static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
	145	unsigned long a1, unsigned long a2,
	146	unsigned long a3)
	147	{
cdee3904	148	if (unlikely(current->audit_context))
b05d8447 EP	149	__audit_syscall_entry(arch, major, a0, a1, a2, a3);
b05d8447 EP	150	}
d7e7528b EP	151	static inline void audit_syscall_exit(void *pt_regs)
	152	{
	153	if (unlikely(current->audit_context)) {
	154	int success = is_syscall_success(pt_regs);
06bdadd7	155	long return_code = regs_return_value(pt_regs);
d7e7528b EP	156
	157	__audit_syscall_exit(success, return_code);
	158	}
	159	}
7ac86265 JL	160	static inline struct filename audit_reusename(const __user char name)
	161	{
	162	if (unlikely(!audit_dummy_context()))
	163	return __audit_reusename(name);
	164	return NULL;
	165	}
91a27b2a	166	static inline void audit_getname(struct filename *name)
d8945bb5	167	{
5ac3a9c2	168	if (unlikely(!audit_dummy_context()))
d8945bb5 AV	169	__audit_getname(name);
d8945bb5 AV	170	}
79f6530c JL	171	static inline void audit_inode(struct filename *name,
79f6530c JL	172	const struct dentry *dentry,
bfcec708	173	unsigned int parent) {
79f6530c JL	174	if (unlikely(!audit_dummy_context())) {
	175	unsigned int flags = 0;
	176	if (parent)
	177	flags \|= AUDIT_INODE_PARENT;
	178	__audit_inode(name, dentry, flags);
	179	}
	180	}
	181	static inline void audit_inode_parent_hidden(struct filename *name,
	182	const struct dentry *dentry)
	183	{
5ac3a9c2	184	if (unlikely(!audit_dummy_context()))
79f6530c JL	185	__audit_inode(name, dentry,
79f6530c JL	186	AUDIT_INODE_PARENT \| AUDIT_INODE_HIDDEN);
73241ccc	187	}
c43a25ab	188	static inline void audit_inode_child(const struct inode *parent,
4fa6b5ec JL	189	const struct dentry *dentry,
4fa6b5ec JL	190	const unsigned char type) {
5ac3a9c2	191	if (unlikely(!audit_dummy_context()))
4fa6b5ec	192	__audit_inode_child(parent, dentry, type);
73241ccc	193	}
0a4ff8c2	194	void audit_core_dumps(long signr);
1da177e4	195
3dc1c1b2	196	static inline void audit_seccomp(unsigned long syscall, long signr, int code)
85e7bac3	197	{
7b9205bd KC	198	/* Force a record to be reported if a signal was delivered. */
7b9205bd KC	199	if (signr \|\| unlikely(!audit_dummy_context()))
3dc1c1b2	200	__audit_seccomp(syscall, signr, code);
85e7bac3 EP	201	}
85e7bac3 EP	202
a5cb013d AV	203	static inline void audit_ptrace(struct task_struct *t)
	204	{
	205	if (unlikely(!audit_dummy_context()))
	206	__audit_ptrace(t);
	207	}
	208
1da177e4	209	/* Private API (for audit.c only) */
bfb4496e	210	extern unsigned int audit_serial(void);
48887e63	211	extern int auditsc_get_stamp(struct audit_context *ctx,
bfb4496e	212	struct timespec t, unsigned int serial);
9321d526 KC	213	extern int audit_set_loginuid(kuid_t loginuid);
	214
	215	static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
	216	{
	217	return tsk->loginuid;
	218	}
	219
b6cfee4c	220	static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
9321d526 KC	221	{
	222	return tsk->sessionid;
	223	}
	224
a33e6751	225	extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
2570ebbd	226	extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
d9cfea91	227	extern void __audit_bprm(struct linux_binprm *bprm);
2950fa9d	228	extern int __audit_socketcall(int nargs, unsigned long *args);
07c49417	229	extern int __audit_sockaddr(int len, void *addr);
157cf649	230	extern void __audit_fd_pair(int fd1, int fd2);
df0a4283	231	extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
c32c8af4	232	extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
20114f71	233	extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
7392906e	234	extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
d84f4f99 DH	235	extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
	236	const struct cred *new,
	237	const struct cred *old);
ca24a23e	238	extern void __audit_log_capset(const struct cred new, const struct cred old);
120a795d	239	extern void __audit_mmap_fd(int fd, int flags);
d8945bb5	240
a33e6751	241	static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
d8945bb5	242	{
5ac3a9c2	243	if (unlikely(!audit_dummy_context()))
a33e6751	244	__audit_ipc_obj(ipcp);
db349509	245	}
157cf649	246	static inline void audit_fd_pair(int fd1, int fd2)
d8945bb5	247	{
5ac3a9c2	248	if (unlikely(!audit_dummy_context()))
157cf649	249	__audit_fd_pair(fd1, fd2);
d8945bb5	250	}
2570ebbd	251	static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
20ca73bc	252	{
5ac3a9c2	253	if (unlikely(!audit_dummy_context()))
e816f370	254	__audit_ipc_set_perm(qbytes, uid, gid, mode);
20ca73bc	255	}
9410d228	256	static inline void audit_bprm(struct linux_binprm *bprm)
07c49417 EP	257	{
07c49417 EP	258	if (unlikely(!audit_dummy_context()))
d9cfea91	259	__audit_bprm(bprm);
07c49417	260	}
2950fa9d	261	static inline int audit_socketcall(int nargs, unsigned long *args)
07c49417 EP	262	{
07c49417 EP	263	if (unlikely(!audit_dummy_context()))
2950fa9d CG	264	return __audit_socketcall(nargs, args);
2950fa9d CG	265	return 0;
07c49417 EP	266	}
	267	static inline int audit_sockaddr(int len, void *addr)
	268	{
	269	if (unlikely(!audit_dummy_context()))
	270	return __audit_sockaddr(len, addr);
	271	return 0;
	272	}
df0a4283	273	static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
20ca73bc	274	{
5ac3a9c2	275	if (unlikely(!audit_dummy_context()))
564f6993	276	__audit_mq_open(oflag, mode, attr);
20ca73bc	277	}
c32c8af4	278	static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
20ca73bc	279	{
5ac3a9c2	280	if (unlikely(!audit_dummy_context()))
c32c8af4	281	__audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
20ca73bc	282	}
20114f71	283	static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
20ca73bc	284	{
5ac3a9c2	285	if (unlikely(!audit_dummy_context()))
20114f71	286	__audit_mq_notify(mqdes, notification);
20ca73bc	287	}
7392906e	288	static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
20ca73bc	289	{
5ac3a9c2	290	if (unlikely(!audit_dummy_context()))
7392906e	291	__audit_mq_getsetattr(mqdes, mqstat);
20ca73bc	292	}
3fc689e9	293
d84f4f99 DH	294	static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
	295	const struct cred *new,
	296	const struct cred *old)
3fc689e9 EP	297	{
3fc689e9 EP	298	if (unlikely(!audit_dummy_context()))
d84f4f99 DH	299	return __audit_log_bprm_fcaps(bprm, new, old);
d84f4f99 DH	300	return 0;
3fc689e9 EP	301	}
3fc689e9 EP	302
ca24a23e	303	static inline void audit_log_capset(const struct cred *new,
d84f4f99	304	const struct cred *old)
e68b75a0 EP	305	{
e68b75a0 EP	306	if (unlikely(!audit_dummy_context()))
ca24a23e	307	__audit_log_capset(new, old);
e68b75a0 EP	308	}
e68b75a0 EP	309
120a795d AV	310	static inline void audit_mmap_fd(int fd, int flags)
	311	{
	312	if (unlikely(!audit_dummy_context()))
	313	__audit_mmap_fd(fd, flags);
	314	}
	315
471a5c7c	316	extern int audit_n_rules;
e54dc243	317	extern int audit_signals;
d7e7528b	318	#else /* CONFIG_AUDITSYSCALL */
9321d526 KC	319	static inline int audit_alloc(struct task_struct *task)
	320	{
	321	return 0;
	322	}
	323	static inline void audit_free(struct task_struct *task)
	324	{ }
	325	static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
	326	unsigned long a1, unsigned long a2,
	327	unsigned long a3)
	328	{ }
	329	static inline void audit_syscall_exit(void *pt_regs)
	330	{ }
	331	static inline int audit_dummy_context(void)
	332	{
	333	return 1;
	334	}
7ac86265 JL	335	static inline struct filename audit_reusename(const __user char name)
	336	{
	337	return NULL;
	338	}
91a27b2a	339	static inline void audit_getname(struct filename *name)
9321d526	340	{ }
91a27b2a	341	static inline void audit_putname(struct filename *name)
9321d526	342	{ }
adb5c247 JL	343	static inline void __audit_inode(struct filename *name,
adb5c247 JL	344	const struct dentry *dentry,
79f6530c	345	unsigned int flags)
9321d526	346	{ }
c43a25ab	347	static inline void __audit_inode_child(const struct inode *parent,
4fa6b5ec JL	348	const struct dentry *dentry,
4fa6b5ec JL	349	const unsigned char type)
9321d526	350	{ }
adb5c247 JL	351	static inline void audit_inode(struct filename *name,
adb5c247 JL	352	const struct dentry *dentry,
bfcec708	353	unsigned int parent)
9321d526	354	{ }
79f6530c JL	355	static inline void audit_inode_parent_hidden(struct filename *name,
	356	const struct dentry *dentry)
	357	{ }
c43a25ab	358	static inline void audit_inode_child(const struct inode *parent,
4fa6b5ec JL	359	const struct dentry *dentry,
4fa6b5ec JL	360	const unsigned char type)
9321d526 KC	361	{ }
	362	static inline void audit_core_dumps(long signr)
	363	{ }
	364	static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
	365	{ }
	366	static inline void audit_seccomp(unsigned long syscall, long signr, int code)
	367	{ }
	368	static inline int auditsc_get_stamp(struct audit_context *ctx,
	369	struct timespec t, unsigned int serial)
	370	{
	371	return 0;
	372	}
	373	static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
	374	{
	375	return INVALID_UID;
	376	}
b6cfee4c	377	static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
9321d526 KC	378	{
	379	return -1;
	380	}
9321d526 KC	381	static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
	382	{ }
	383	static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
	384	gid_t gid, umode_t mode)
	385	{ }
9410d228 RGB	386	static inline void audit_bprm(struct linux_binprm *bprm)
9410d228 RGB	387	{ }
2950fa9d CG	388	static inline int audit_socketcall(int nargs, unsigned long *args)
	389	{
	390	return 0;
	391	}
9321d526 KC	392	static inline void audit_fd_pair(int fd1, int fd2)
	393	{ }
	394	static inline int audit_sockaddr(int len, void *addr)
	395	{
	396	return 0;
	397	}
	398	static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
	399	{ }
	400	static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
	401	unsigned int msg_prio,
	402	const struct timespec *abs_timeout)
	403	{ }
	404	static inline void audit_mq_notify(mqd_t mqdes,
	405	const struct sigevent *notification)
	406	{ }
	407	static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
	408	{ }
	409	static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
	410	const struct cred *new,
	411	const struct cred *old)
	412	{
	413	return 0;
	414	}
ca24a23e EB	415	static inline void audit_log_capset(const struct cred *new,
ca24a23e EB	416	const struct cred *old)
9321d526 KC	417	{ }
	418	static inline void audit_mmap_fd(int fd, int flags)
	419	{ }
	420	static inline void audit_ptrace(struct task_struct *t)
	421	{ }
471a5c7c	422	#define audit_n_rules 0
e54dc243	423	#define audit_signals 0
d7e7528b	424	#endif /* CONFIG_AUDITSYSCALL */
1da177e4	425
780a7654 EB	426	static inline bool audit_loginuid_set(struct task_struct *tsk)
	427	{
	428	return uid_valid(audit_get_loginuid(tsk));
	429	}
	430
1da177e4 LT	431	#ifdef CONFIG_AUDIT
	432	/* These are defined in audit.c */
	433	/* Public API */
b9075fa9 JP	434	extern __printf(4, 5)
	435	void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	436	const char *fmt, ...);
1da177e4	437
9796fdd8	438	extern struct audit_buffer audit_log_start(struct audit_context ctx, gfp_t gfp_mask, int type);
b9075fa9 JP	439	extern __printf(2, 3)
b9075fa9 JP	440	void audit_log_format(struct audit_buffer ab, const char fmt, ...);
1da177e4	441	extern void audit_log_end(struct audit_buffer *ab);
de6bbd1d EP	442	extern int audit_string_contains_control(const char *string,
de6bbd1d EP	443	size_t len);
b556f8ad EP	444	extern void audit_log_n_hex(struct audit_buffer *ab,
	445	const unsigned char *buf,
	446	size_t len);
	447	extern void audit_log_n_string(struct audit_buffer *ab,
	448	const char *buf,
	449	size_t n);
b556f8ad EP	450	extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
	451	const char *string,
	452	size_t n);
de6bbd1d	453	extern void audit_log_untrustedstring(struct audit_buffer *ab,
83c7d091	454	const char *string);
1da177e4 LT	455	extern void audit_log_d_path(struct audit_buffer *ab,
1da177e4 LT	456	const char *prefix,
66b3fad3	457	const struct path *path);
9d960985 EP	458	extern void audit_log_key(struct audit_buffer *ab,
9d960985 EP	459	char *key);
a51d9eaa KC	460	extern void audit_log_link_denied(const char *operation,
a51d9eaa KC	461	struct path *link);
522ed776	462	extern void audit_log_lost(const char *message);
131ad62d MDF	463	#ifdef CONFIG_SECURITY
	464	extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
	465	#else
9321d526 KC	466	static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
9321d526 KC	467	{ }
131ad62d MDF	468	#endif
131ad62d MDF	469
b24a30a7 EP	470	extern int audit_log_task_context(struct audit_buffer *ab);
	471	extern void audit_log_task_info(struct audit_buffer *ab,
	472	struct task_struct *tsk);
	473
9d57a7f9 AD	474	extern int audit_update_lsm_rules(void);
9d57a7f9 AD	475
fe7752ba	476	/* Private API (for audit.c only) */
62062cf8	477	extern int audit_filter_user(int type);
fe7752ba	478	extern int audit_filter_type(int type);
ce0d9f04	479	extern int audit_rule_change(int type, __u32 portid, int seq,
dc9eb698	480	void *data, size_t datasz);
099dd235	481	extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
ce0d9f04	482
3e1d0bb6	483	extern u32 audit_enabled;
9321d526 KC	484	#else /* CONFIG_AUDIT */
	485	static inline __printf(4, 5)
	486	void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	487	const char *fmt, ...)
	488	{ }
	489	static inline struct audit_buffer audit_log_start(struct audit_context ctx,
	490	gfp_t gfp_mask, int type)
	491	{
	492	return NULL;
	493	}
	494	static inline __printf(2, 3)
	495	void audit_log_format(struct audit_buffer ab, const char fmt, ...)
	496	{ }
	497	static inline void audit_log_end(struct audit_buffer *ab)
	498	{ }
	499	static inline void audit_log_n_hex(struct audit_buffer *ab,
	500	const unsigned char *buf, size_t len)
	501	{ }
	502	static inline void audit_log_n_string(struct audit_buffer *ab,
	503	const char *buf, size_t n)
	504	{ }
	505	static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
	506	const char *string, size_t n)
	507	{ }
	508	static inline void audit_log_untrustedstring(struct audit_buffer *ab,
	509	const char *string)
	510	{ }
	511	static inline void audit_log_d_path(struct audit_buffer *ab,
	512	const char *prefix,
	513	const struct path *path)
	514	{ }
	515	static inline void audit_log_key(struct audit_buffer ab, char key)
	516	{ }
	517	static inline void audit_log_link_denied(const char *string,
	518	const struct path *link)
	519	{ }
	520	static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
	521	{ }
b24a30a7 EP	522	static inline int audit_log_task_context(struct audit_buffer *ab)
	523	{
	524	return 0;
	525	}
	526	static inline void audit_log_task_info(struct audit_buffer *ab,
	527	struct task_struct *tsk)
	528	{ }
522ed776	529	#define audit_enabled 0
9321d526 KC	530	#endif /* CONFIG_AUDIT */
	531	static inline void audit_log_string(struct audit_buffer ab, const char buf)
	532	{
	533	audit_log_n_string(ab, buf, strlen(buf));
	534	}
	535
1da177e4	536	#endif