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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#include <linux/tty.h>
27
28
29
30
31#define AUDIT_NAMES 5
32
33
34
35
36enum audit_state {
37 AUDIT_DISABLED,
38
39
40 AUDIT_BUILD_CONTEXT,
41
42
43
44
45
46 AUDIT_RECORD_CONTEXT
47
48
49
50};
51
52
53struct audit_watch;
54struct audit_fsnotify_mark;
55struct audit_tree;
56struct audit_chunk;
57
58struct audit_entry {
59 struct list_head list;
60 struct rcu_head rcu;
61 struct audit_krule rule;
62};
63
64struct audit_cap_data {
65 kernel_cap_t permitted;
66 kernel_cap_t inheritable;
67 union {
68 unsigned int fE;
69 kernel_cap_t effective;
70 };
71};
72
73
74
75
76
77
78struct audit_names {
79 struct list_head list;
80
81 struct filename *name;
82 int name_len;
83 bool hidden;
84
85 unsigned long ino;
86 dev_t dev;
87 umode_t mode;
88 kuid_t uid;
89 kgid_t gid;
90 dev_t rdev;
91 u32 osid;
92 struct audit_cap_data fcap;
93 unsigned int fcap_ver;
94 unsigned char type;
95
96
97
98
99
100 bool should_free;
101};
102
103struct audit_proctitle {
104 int len;
105 char *value;
106};
107
108
109struct audit_context {
110 int dummy;
111 int in_syscall;
112 enum audit_state state, current_state;
113 unsigned int serial;
114 int major;
115 struct timespec ctime;
116 unsigned long argv[4];
117 long return_code;
118 u64 prio;
119 int return_valid;
120
121
122
123
124
125
126
127
128 struct audit_names preallocated_names[AUDIT_NAMES];
129 int name_count;
130 struct list_head names_list;
131 char *filterkey;
132 struct path pwd;
133 struct audit_aux_data *aux;
134 struct audit_aux_data *aux_pids;
135 struct sockaddr_storage *sockaddr;
136 size_t sockaddr_len;
137
138 pid_t pid, ppid;
139 kuid_t uid, euid, suid, fsuid;
140 kgid_t gid, egid, sgid, fsgid;
141 unsigned long personality;
142 int arch;
143
144 pid_t target_pid;
145 kuid_t target_auid;
146 kuid_t target_uid;
147 unsigned int target_sessionid;
148 u32 target_sid;
149 char target_comm[TASK_COMM_LEN];
150
151 struct audit_tree_refs *trees, *first_trees;
152 struct list_head killed_trees;
153 int tree_count;
154
155 int type;
156 union {
157 struct {
158 int nargs;
159 long args[6];
160 } socketcall;
161 struct {
162 kuid_t uid;
163 kgid_t gid;
164 umode_t mode;
165 u32 osid;
166 int has_perm;
167 uid_t perm_uid;
168 gid_t perm_gid;
169 umode_t perm_mode;
170 unsigned long qbytes;
171 } ipc;
172 struct {
173 mqd_t mqdes;
174 struct mq_attr mqstat;
175 } mq_getsetattr;
176 struct {
177 mqd_t mqdes;
178 int sigev_signo;
179 } mq_notify;
180 struct {
181 mqd_t mqdes;
182 size_t msg_len;
183 unsigned int msg_prio;
184 struct timespec abs_timeout;
185 } mq_sendrecv;
186 struct {
187 int oflag;
188 umode_t mode;
189 struct mq_attr attr;
190 } mq_open;
191 struct {
192 pid_t pid;
193 struct audit_cap_data cap;
194 } capset;
195 struct {
196 int fd;
197 int flags;
198 } mmap;
199 struct {
200 int argc;
201 } execve;
202 struct {
203 char *name;
204 } module;
205 };
206 int fds[2];
207 struct audit_proctitle proctitle;
208};
209
210extern u32 audit_ever_enabled;
211
212extern void audit_copy_inode(struct audit_names *name,
213 const struct dentry *dentry,
214 struct inode *inode);
215extern void audit_log_cap(struct audit_buffer *ab, char *prefix,
216 kernel_cap_t *cap);
217extern void audit_log_name(struct audit_context *context,
218 struct audit_names *n, const struct path *path,
219 int record_num, int *call_panic);
220
221extern int auditd_test_task(const struct task_struct *task);
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(__u32 portid, 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 __u32 portid;
247 struct net *net;
248 struct sk_buff_head q;
249};
250
251int audit_send_list(void *);
252
253extern int selinux_audit_rule_update(void);
254
255extern struct mutex audit_filter_mutex;
256extern int audit_del_rule(struct audit_entry *);
257extern void audit_free_rule_rcu(struct rcu_head *);
258extern struct list_head audit_filter_list[];
259
260extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
261
262extern void audit_log_d_path_exe(struct audit_buffer *ab,
263 struct mm_struct *mm);
264
265extern struct tty_struct *audit_get_tty(struct task_struct *tsk);
266extern void audit_put_tty(struct tty_struct *tty);
267
268
269#ifdef CONFIG_AUDIT_WATCH
270extern void audit_put_watch(struct audit_watch *watch);
271extern void audit_get_watch(struct audit_watch *watch);
272extern int audit_to_watch(struct audit_krule *krule, char *path, int len, u32 op);
273extern int audit_add_watch(struct audit_krule *krule, struct list_head **list);
274extern void audit_remove_watch_rule(struct audit_krule *krule);
275extern char *audit_watch_path(struct audit_watch *watch);
276extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino, dev_t dev);
277
278extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule, char *pathname, int len);
279extern char *audit_mark_path(struct audit_fsnotify_mark *mark);
280extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark);
281extern void audit_remove_mark_rule(struct audit_krule *krule);
282extern int audit_mark_compare(struct audit_fsnotify_mark *mark, unsigned long ino, dev_t dev);
283extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old);
284extern int audit_exe_compare(struct task_struct *tsk, struct audit_fsnotify_mark *mark);
285
286#else
287#define audit_put_watch(w) {}
288#define audit_get_watch(w) {}
289#define audit_to_watch(k, p, l, o) (-EINVAL)
290#define audit_add_watch(k, l) (-EINVAL)
291#define audit_remove_watch_rule(k) BUG()
292#define audit_watch_path(w) ""
293#define audit_watch_compare(w, i, d) 0
294
295#define audit_alloc_mark(k, p, l) (ERR_PTR(-EINVAL))
296#define audit_mark_path(m) ""
297#define audit_remove_mark(m)
298#define audit_remove_mark_rule(k)
299#define audit_mark_compare(m, i, d) 0
300#define audit_exe_compare(t, m) (-EINVAL)
301#define audit_dupe_exe(n, o) (-EINVAL)
302#endif
303
304#ifdef CONFIG_AUDIT_TREE
305extern struct audit_chunk *audit_tree_lookup(const struct inode *);
306extern void audit_put_chunk(struct audit_chunk *);
307extern bool audit_tree_match(struct audit_chunk *, struct audit_tree *);
308extern int audit_make_tree(struct audit_krule *, char *, u32);
309extern int audit_add_tree_rule(struct audit_krule *);
310extern int audit_remove_tree_rule(struct audit_krule *);
311extern void audit_trim_trees(void);
312extern int audit_tag_tree(char *old, char *new);
313extern const char *audit_tree_path(struct audit_tree *);
314extern void audit_put_tree(struct audit_tree *);
315extern void audit_kill_trees(struct list_head *);
316#else
317#define audit_remove_tree_rule(rule) BUG()
318#define audit_add_tree_rule(rule) -EINVAL
319#define audit_make_tree(rule, str, op) -EINVAL
320#define audit_trim_trees() (void)0
321#define audit_put_tree(tree) (void)0
322#define audit_tag_tree(old, new) -EINVAL
323#define audit_tree_path(rule) ""
324#define audit_kill_trees(list) BUG()
325#endif
326
327extern char *audit_unpack_string(void **, size_t *, size_t);
328
329extern pid_t audit_sig_pid;
330extern kuid_t audit_sig_uid;
331extern u32 audit_sig_sid;
332
333extern int audit_filter(int msgtype, unsigned int listtype);
334
335#ifdef CONFIG_AUDITSYSCALL
336extern int audit_signal_info(int sig, struct task_struct *t);
337extern void audit_filter_inodes(struct task_struct *, struct audit_context *);
338extern struct list_head *audit_killed_trees(void);
339#else
340#define audit_signal_info(s,t) AUDIT_DISABLED
341#define audit_filter_inodes(t,c) AUDIT_DISABLED
342#endif
343
344extern struct mutex audit_cmd_mutex;
345