Use dentry_path() to create full path to inode object
[pohmelfs.git] / kernel / audit.h
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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
22 #include <linux/fs.h>
23 #include <linux/audit.h>
24 #include <linux/skbuff.h>
26 /* 0 = no checking
27 1 = put_count checking
28 2 = verbose put_count checking
30 #define AUDIT_DEBUG 0
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. */
35 enum audit_state {
36 AUDIT_DISABLED, /* Do not create per-task audit_context.
37 * No syscall-specific audit records can
38 * be generated. */
39 AUDIT_BUILD_CONTEXT, /* Create the per-task audit_context,
40 * and fill it in at syscall
41 * entry time. This makes a full
42 * syscall record available if some
43 * other part of the kernel decides it
44 * should be recorded. */
45 AUDIT_RECORD_CONTEXT /* Create the per-task audit_context,
46 * always fill it in at syscall entry
47 * time, and always write out the audit
48 * record at syscall exit time. */
51 /* Rule lists */
52 struct audit_watch;
53 struct audit_tree;
54 struct audit_chunk;
56 struct audit_entry {
57 struct list_head list;
58 struct rcu_head rcu;
59 struct audit_krule rule;
62 #ifdef CONFIG_AUDIT
63 extern int audit_enabled;
64 extern int audit_ever_enabled;
65 #endif
67 extern int audit_pid;
69 #define AUDIT_INODE_BUCKETS 32
70 extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];
72 static inline int audit_hash_ino(u32 ino)
74 return (ino & (AUDIT_INODE_BUCKETS-1));
77 extern int audit_match_class(int class, unsigned syscall);
78 extern int audit_comparator(const u32 left, const u32 op, const u32 right);
79 extern int audit_compare_dname_path(const char *dname, const char *path,
80 int *dirlen);
81 extern struct sk_buff * audit_make_reply(int pid, int seq, int type,
82 int done, int multi,
83 const void *payload, int size);
84 extern void audit_panic(const char *message);
86 struct audit_netlink_list {
87 int pid;
88 struct sk_buff_head q;
91 int audit_send_list(void *);
93 extern int selinux_audit_rule_update(void);
95 extern struct mutex audit_filter_mutex;
96 extern void audit_free_rule_rcu(struct rcu_head *);
97 extern struct list_head audit_filter_list[];
99 extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
101 /* audit watch functions */
102 #ifdef CONFIG_AUDIT_WATCH
103 extern void audit_put_watch(struct audit_watch *watch);
104 extern void audit_get_watch(struct audit_watch *watch);
105 extern int audit_to_watch(struct audit_krule *krule, char *path, int len, u32 op);
106 extern int audit_add_watch(struct audit_krule *krule, struct list_head **list);
107 extern void audit_remove_watch_rule(struct audit_krule *krule);
108 extern char *audit_watch_path(struct audit_watch *watch);
109 extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino, dev_t dev);
110 #else
111 #define audit_put_watch(w) {}
112 #define audit_get_watch(w) {}
113 #define audit_to_watch(k, p, l, o) (-EINVAL)
114 #define audit_add_watch(k, l) (-EINVAL)
115 #define audit_remove_watch_rule(k) BUG()
116 #define audit_watch_path(w) ""
117 #define audit_watch_compare(w, i, d) 0
119 #endif /* CONFIG_AUDIT_WATCH */
121 #ifdef CONFIG_AUDIT_TREE
122 extern struct audit_chunk *audit_tree_lookup(const struct inode *);
123 extern void audit_put_chunk(struct audit_chunk *);
124 extern int audit_tree_match(struct audit_chunk *, struct audit_tree *);
125 extern int audit_make_tree(struct audit_krule *, char *, u32);
126 extern int audit_add_tree_rule(struct audit_krule *);
127 extern int audit_remove_tree_rule(struct audit_krule *);
128 extern void audit_trim_trees(void);
129 extern int audit_tag_tree(char *old, char *new);
130 extern const char *audit_tree_path(struct audit_tree *);
131 extern void audit_put_tree(struct audit_tree *);
132 extern void audit_kill_trees(struct list_head *);
133 #else
134 #define audit_remove_tree_rule(rule) BUG()
135 #define audit_add_tree_rule(rule) -EINVAL
136 #define audit_make_tree(rule, str, op) -EINVAL
137 #define audit_trim_trees() (void)0
138 #define audit_put_tree(tree) (void)0
139 #define audit_tag_tree(old, new) -EINVAL
140 #define audit_tree_path(rule) "" /* never called */
141 #define audit_kill_trees(list) BUG()
142 #endif
144 extern char *audit_unpack_string(void **, size_t *, size_t);
146 extern pid_t audit_sig_pid;
147 extern uid_t audit_sig_uid;
148 extern u32 audit_sig_sid;
150 #ifdef CONFIG_AUDITSYSCALL
151 extern int __audit_signal_info(int sig, struct task_struct *t);
152 static inline int audit_signal_info(int sig, struct task_struct *t)
154 if (unlikely((audit_pid && t->tgid == audit_pid) ||
155 (audit_signals && !audit_dummy_context())))
156 return __audit_signal_info(sig, t);
157 return 0;
159 extern void audit_filter_inodes(struct task_struct *, struct audit_context *);
160 extern struct list_head *audit_killed_trees(void);
161 #else
162 #define audit_signal_info(s,t) AUDIT_DISABLED
163 #define audit_filter_inodes(t,c) AUDIT_DISABLED
164 #endif
166 extern struct mutex audit_cmd_mutex;