/* audit -- definition of audit_context structure and supporting types  * * Copyright 2003-2004 Red Hat, Inc. * Copyright 2005 Hewlett-Packard Development Company, L.P. * Copyright 2005 IBM Corporation * * 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 */ #include <linux/fs.h>#include <linux/audit.h>#include <linux/skbuff.h> /* 0 = no checking   1 = put_count checking   2 = verbose put_count checking*/#define AUDIT_DEBUG 0 /* At task start time, the audit_state is set in the audit_context using   a per-task filter.  At syscall entry, the audit_state is augmented by   the syscall filter. */enum audit_state {	AUDIT_DISABLED,		/* Do not create per-task audit_context.				 * No syscall-specific audit records can				 * be generated. */	AUDIT_SETUP_CONTEXT,	/* Create the per-task audit_context,				 * but don't necessarily fill it in at				 * syscall entry time (i.e., filter				 * instead). */	AUDIT_BUILD_CONTEXT,	/* Create the per-task audit_context,				 * and always fill it in at syscall				 * entry time.  This makes a full				 * syscall record available if some				 * other part of the kernel decides it				 * should be recorded. */	AUDIT_RECORD_CONTEXT	/* Create the per-task audit_context,				 * always fill it in at syscall entry				 * time, and always write out the audit				 * record at syscall exit time.  */}; /* Rule lists */struct audit_parent; struct audit_watch {	atomic_t		count;	/* reference count */	char			*path;	/* insertion path */	dev_t			dev;	/* associated superblock device */	unsigned long		ino;	/* associated inode number */	struct audit_parent	*parent; /* associated parent */	struct list_head	wlist;	/* entry in parent->watches list */	struct list_head	rules;	/* associated rules */}; struct audit_field {	u32				type;	u32				val;	u32				op;	char				*se_str;	struct selinux_audit_rule	*se_rule;}; 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;	struct audit_field	*fields;	struct audit_field	*inode_f; /* quick access to an inode field */	struct audit_watch	*watch;	/* associated watch */	struct list_head	rlist;	/* entry in audit_watch.rules list */}; struct audit_entry {	struct list_head	list;	struct rcu_head		rcu;	struct audit_krule	rule;}; extern int audit_pid; #define AUDIT_INODE_BUCKETS	32extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS]; static inline int audit_hash_ino(u32 ino){	return (ino & (AUDIT_INODE_BUCKETS-1));} extern int audit_comparator(const u32 left, const u32 op, const u32 right);extern int audit_compare_dname_path(const char *dname, const char *path,				    int *dirlen);extern struct sk_buff *	    audit_make_reply(int pid, int seq, int type,					     int done, int multi,					     void *payload, int size);extern void		    audit_send_reply(int pid, int seq, int type,					     int done, int multi,					     void *payload, int size);extern void		    audit_log_lost(const char *message);extern void		    audit_panic(const char *message); struct audit_netlink_list {	int pid;	struct sk_buff_head q;}; int audit_send_list(void *); struct inotify_watch;extern void audit_free_parent(struct inotify_watch *);extern void audit_handle_ievent(struct inotify_watch *, u32, u32, u32,				const char *, struct inode *);extern int selinux_audit_rule_update(void); #ifdef CONFIG_AUDITSYSCALLextern void __audit_signal_info(int sig, struct task_struct *t);static inline void audit_signal_info(int sig, struct task_struct *t){	if (unlikely(audit_pid && t->tgid == audit_pid))		__audit_signal_info(sig, t);}extern enum audit_state audit_filter_inodes(struct task_struct *,					    struct audit_context *);extern void audit_set_auditable(struct audit_context *);#else#define audit_signal_info(s,t)#define audit_filter_inodes(t,c) AUDIT_DISABLED#define audit_set_auditable(c)#endif