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22#include <linux/fs.h>
23#include <linux/audit.h>
24#include <linux/skbuff.h>
25#include <uapi/linux/mqueue.h>
26
27
28
29
30#define AUDIT_NAMES 5
31
32
33
34
35enum audit_state {
36 AUDIT_DISABLED,
37
38
39 AUDIT_BUILD_CONTEXT,
40
41
42
43
44
45 AUDIT_RECORD_CONTEXT
46
47
48
49};
50
51
52struct audit_watch;
53struct audit_tree;
54struct audit_chunk;
55
56struct audit_entry {
57 struct list_head list;
58 struct rcu_head rcu;
59 struct audit_krule rule;
60};
61
62struct audit_cap_data {
63 kernel_cap_t permitted;
64 kernel_cap_t inheritable;
65 union {
66 unsigned int fE;
67 kernel_cap_t effective;
68 };
69};
70
71
72
73
74
75
76struct audit_names {
77 struct list_head list;
78
79 struct filename *name;
80 int name_len;
81 bool hidden;
82
83 unsigned long ino;
84 dev_t dev;
85 umode_t mode;
86 kuid_t uid;
87 kgid_t gid;
88 dev_t rdev;
89 u32 osid;
90 struct audit_cap_data fcap;
91 unsigned int fcap_ver;
92 unsigned char type;
93
94
95
96
97
98 bool should_free;
99};
100
101struct audit_proctitle {
102 int len;
103 char *value;
104};
105
106
107struct audit_context {
108 int dummy;
109 int in_syscall;
110 enum audit_state state, current_state;
111 unsigned int serial;
112 int major;
113 struct timespec ctime;
114 unsigned long argv[4];
115 long return_code;
116 u64 prio;
117 int return_valid;
118
119
120
121
122
123
124
125
126 struct audit_names preallocated_names[AUDIT_NAMES];
127 int name_count;
128 struct list_head names_list;
129 char *filterkey;
130 struct path pwd;
131 struct audit_aux_data *aux;
132 struct audit_aux_data *aux_pids;
133 struct sockaddr_storage *sockaddr;
134 size_t sockaddr_len;
135
136 pid_t pid, ppid;
137 kuid_t uid, euid, suid, fsuid;
138 kgid_t gid, egid, sgid, fsgid;
139 unsigned long personality;
140 int arch;
141
142 pid_t target_pid;
143 kuid_t target_auid;
144 kuid_t target_uid;
145 unsigned int target_sessionid;
146 u32 target_sid;
147 char target_comm[TASK_COMM_LEN];
148
149 struct audit_tree_refs *trees, *first_trees;
150 struct list_head killed_trees;
151 int tree_count;
152
153 int type;
154 union {
155 struct {
156 int nargs;
157 long args[6];
158 } socketcall;
159 struct {
160 kuid_t uid;
161 kgid_t gid;
162 umode_t mode;
163 u32 osid;
164 int has_perm;
165 uid_t perm_uid;
166 gid_t perm_gid;
167 umode_t perm_mode;
168 unsigned long qbytes;
169 } ipc;
170 struct {
171 mqd_t mqdes;
172 struct mq_attr mqstat;
173 } mq_getsetattr;
174 struct {
175 mqd_t mqdes;
176 int sigev_signo;
177 } mq_notify;
178 struct {
179 mqd_t mqdes;
180 size_t msg_len;
181 unsigned int msg_prio;
182 struct timespec abs_timeout;
183 } mq_sendrecv;
184 struct {
185 int oflag;
186 umode_t mode;
187 struct mq_attr attr;
188 } mq_open;
189 struct {
190 pid_t pid;
191 struct audit_cap_data cap;
192 } capset;
193 struct {
194 int fd;
195 int flags;
196 } mmap;
197 struct {
198 int argc;
199 } execve;
200 };
201 int fds[2];
202 struct audit_proctitle proctitle;
203};
204
205extern u32 audit_ever_enabled;
206
207extern void audit_copy_inode(struct audit_names *name,
208 const struct dentry *dentry,
209 const struct inode *inode);
210extern void audit_log_cap(struct audit_buffer *ab, char *prefix,
211 kernel_cap_t *cap);
212extern void audit_log_name(struct audit_context *context,
213 struct audit_names *n, struct path *path,
214 int record_num, int *call_panic);
215
216extern int audit_pid;
217
218#define AUDIT_INODE_BUCKETS 32
219extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];
220
221static inline int audit_hash_ino(u32 ino)
222{
223 return (ino & (AUDIT_INODE_BUCKETS-1));
224}
225
226
227#define AUDIT_NAME_FULL -1
228
229extern int audit_match_class(int class, unsigned syscall);
230extern int audit_comparator(const u32 left, const u32 op, const u32 right);
231extern int audit_uid_comparator(kuid_t left, u32 op, kuid_t right);
232extern int audit_gid_comparator(kgid_t left, u32 op, kgid_t right);
233extern int parent_len(const char *path);
234extern int audit_compare_dname_path(const char *dname, const char *path, int plen);
235extern struct sk_buff *audit_make_reply(__u32 portid, int seq, int type,
236 int done, int multi,
237 const void *payload, int size);
238extern void audit_panic(const char *message);
239
240struct audit_netlink_list {
241 __u32 portid;
242 struct net *net;
243 struct sk_buff_head q;
244};
245
246int audit_send_list(void *);
247
248struct audit_net {
249 struct sock *nlsk;
250};
251
252extern int selinux_audit_rule_update(void);
253
254extern struct mutex audit_filter_mutex;
255extern void audit_free_rule_rcu(struct rcu_head *);
256extern struct list_head audit_filter_list[];
257
258extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
259
260extern void audit_log_d_path_exe(struct audit_buffer *ab,
261 struct mm_struct *mm);
262
263
264#ifdef CONFIG_AUDIT_WATCH
265extern void audit_put_watch(struct audit_watch *watch);
266extern void audit_get_watch(struct audit_watch *watch);
267extern int audit_to_watch(struct audit_krule *krule, char *path, int len, u32 op);
268extern int audit_add_watch(struct audit_krule *krule, struct list_head **list);
269extern void audit_remove_watch_rule(struct audit_krule *krule);
270extern char *audit_watch_path(struct audit_watch *watch);
271extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino, dev_t dev);
272#else
273#define audit_put_watch(w) {}
274#define audit_get_watch(w) {}
275#define audit_to_watch(k, p, l, o) (-EINVAL)
276#define audit_add_watch(k, l) (-EINVAL)
277#define audit_remove_watch_rule(k) BUG()
278#define audit_watch_path(w) ""
279#define audit_watch_compare(w, i, d) 0
280
281#endif
282
283#ifdef CONFIG_AUDIT_TREE
284extern struct audit_chunk *audit_tree_lookup(const struct inode *);
285extern void audit_put_chunk(struct audit_chunk *);
286extern int audit_tree_match(struct audit_chunk *, struct audit_tree *);
287extern int audit_make_tree(struct audit_krule *, char *, u32);
288extern int audit_add_tree_rule(struct audit_krule *);
289extern int audit_remove_tree_rule(struct audit_krule *);
290extern void audit_trim_trees(void);
291extern int audit_tag_tree(char *old, char *new);
292extern const char *audit_tree_path(struct audit_tree *);
293extern void audit_put_tree(struct audit_tree *);
294extern void audit_kill_trees(struct list_head *);
295#else
296#define audit_remove_tree_rule(rule) BUG()
297#define audit_add_tree_rule(rule) -EINVAL
298#define audit_make_tree(rule, str, op) -EINVAL
299#define audit_trim_trees() (void)0
300#define audit_put_tree(tree) (void)0
301#define audit_tag_tree(old, new) -EINVAL
302#define audit_tree_path(rule) ""
303#define audit_kill_trees(list) BUG()
304#endif
305
306extern char *audit_unpack_string(void **, size_t *, size_t);
307
308extern pid_t audit_sig_pid;
309extern kuid_t audit_sig_uid;
310extern u32 audit_sig_sid;
311
312#ifdef CONFIG_AUDITSYSCALL
313extern int __audit_signal_info(int sig, struct task_struct *t);
314static inline int audit_signal_info(int sig, struct task_struct *t)
315{
316 if (unlikely((audit_pid && t->tgid == audit_pid) ||
317 (audit_signals && !audit_dummy_context())))
318 return __audit_signal_info(sig, t);
319 return 0;
320}
321extern void audit_filter_inodes(struct task_struct *, struct audit_context *);
322extern struct list_head *audit_killed_trees(void);
323#else
324#define audit_signal_info(s,t) AUDIT_DISABLED
325#define audit_filter_inodes(t,c) AUDIT_DISABLED
326#endif
327
328extern struct mutex audit_cmd_mutex;
329
