1 /* audit -- definition of audit_context structure and supporting types
3 * Copyright 2003-2004 Red Hat, Inc.
4 * Copyright 2005 Hewlett-Packard Development Company, L.P.
5 * Copyright 2005 IBM Corporation
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <linux/audit.h>
24 #include <linux/skbuff.h>
27 1 = put_count checking
28 2 = verbose put_count checking
32 /* At task start time, the audit_state is set in the audit_context using
33 a per-task filter. At syscall entry, the audit_state is augmented by
34 the syscall filter. */
36 AUDIT_DISABLED
, /* Do not create per-task audit_context.
37 * No syscall-specific audit records can
39 AUDIT_SETUP_CONTEXT
, /* Create the per-task audit_context,
40 * but don't necessarily fill it in at
41 * syscall entry time (i.e., filter
43 AUDIT_BUILD_CONTEXT
, /* Create the per-task audit_context,
44 * and always fill it in at syscall
45 * entry time. This makes a full
46 * syscall record available if some
47 * other part of the kernel decides it
48 * should be recorded. */
49 AUDIT_RECORD_CONTEXT
/* Create the per-task audit_context,
50 * always fill it in at syscall entry
51 * time, and always write out the audit
52 * record at syscall exit time. */
59 atomic_t count
; /* reference count */
60 char *path
; /* insertion path */
61 dev_t dev
; /* associated superblock device */
62 unsigned long ino
; /* associated inode number */
63 struct audit_parent
*parent
; /* associated parent */
64 struct list_head wlist
; /* entry in parent->watches list */
65 struct list_head rules
; /* associated rules */
73 struct selinux_audit_rule
*se_rule
;
84 u32 mask
[AUDIT_BITMASK_SIZE
];
85 u32 buflen
; /* for data alloc on list rules */
87 char *filterkey
; /* ties events to rules */
88 struct audit_field
*fields
;
89 struct audit_field
*arch_f
; /* quick access to arch field */
90 struct audit_field
*inode_f
; /* quick access to an inode field */
91 struct audit_watch
*watch
; /* associated watch */
92 struct audit_tree
*tree
; /* associated watched tree */
93 struct list_head rlist
; /* entry in audit_{watch,tree}.rules list */
97 struct list_head list
;
99 struct audit_krule rule
;
102 extern int audit_pid
;
104 #define AUDIT_INODE_BUCKETS 32
105 extern struct list_head audit_inode_hash
[AUDIT_INODE_BUCKETS
];
107 static inline int audit_hash_ino(u32 ino
)
109 return (ino
& (AUDIT_INODE_BUCKETS
-1));
112 extern int audit_match_class(int class, unsigned syscall
);
113 extern int audit_comparator(const u32 left
, const u32 op
, const u32 right
);
114 extern int audit_compare_dname_path(const char *dname
, const char *path
,
116 extern struct sk_buff
* audit_make_reply(int pid
, int seq
, int type
,
118 void *payload
, int size
);
119 extern void audit_send_reply(int pid
, int seq
, int type
,
121 void *payload
, int size
);
122 extern void audit_panic(const char *message
);
124 struct audit_netlink_list
{
126 struct sk_buff_head q
;
129 int audit_send_list(void *);
131 struct inotify_watch
;
132 extern void audit_free_parent(struct inotify_watch
*);
133 extern void audit_handle_ievent(struct inotify_watch
*, u32
, u32
, u32
,
134 const char *, struct inode
*);
135 extern int selinux_audit_rule_update(void);
137 extern struct mutex audit_filter_mutex
;
138 extern void audit_free_rule_rcu(struct rcu_head
*);
140 #ifdef CONFIG_AUDIT_TREE
141 extern struct audit_chunk
*audit_tree_lookup(const struct inode
*);
142 extern void audit_put_chunk(struct audit_chunk
*);
143 extern int audit_tree_match(struct audit_chunk
*, struct audit_tree
*);
144 extern int audit_make_tree(struct audit_krule
*, char *, u32
);
145 extern int audit_add_tree_rule(struct audit_krule
*);
146 extern int audit_remove_tree_rule(struct audit_krule
*);
147 extern void audit_trim_trees(void);
148 extern int audit_tag_tree(char *old
, char *new);
149 extern void audit_schedule_prune(void);
150 extern void audit_prune_trees(void);
151 extern const char *audit_tree_path(struct audit_tree
*);
152 extern void audit_put_tree(struct audit_tree
*);
154 #define audit_remove_tree_rule(rule) BUG()
155 #define audit_add_tree_rule(rule) -EINVAL
156 #define audit_make_tree(rule, str, op) -EINVAL
157 #define audit_trim_trees() (void)0
158 #define audit_put_tree(tree) (void)0
159 #define audit_tag_tree(old, new) -EINVAL
160 #define audit_tree_path(rule) "" /* never called */
163 extern char *audit_unpack_string(void **, size_t *, size_t);
165 #ifdef CONFIG_AUDITSYSCALL
166 extern int __audit_signal_info(int sig
, struct task_struct
*t
);
167 static inline int audit_signal_info(int sig
, struct task_struct
*t
)
169 if (unlikely((audit_pid
&& t
->tgid
== audit_pid
) ||
170 (audit_signals
&& !audit_dummy_context())))
171 return __audit_signal_info(sig
, t
);
174 extern enum audit_state
audit_filter_inodes(struct task_struct
*,
175 struct audit_context
*);
176 extern void audit_set_auditable(struct audit_context
*);
178 #define audit_signal_info(s,t) AUDIT_DISABLED
179 #define audit_filter_inodes(t,c) AUDIT_DISABLED
180 #define audit_set_auditable(c)