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