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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 kernel_cap_t ambient;
72 RH_KABI_EXTEND(kuid_t rootid;)
73};
74
75
76
77
78
79
80struct audit_names {
81 struct list_head list;
82
83 struct filename *name;
84 int name_len;
85 bool hidden;
86
87 unsigned long ino;
88 dev_t dev;
89 umode_t mode;
90 kuid_t uid;
91 kgid_t gid;
92 dev_t rdev;
93 u32 osid;
94 struct audit_cap_data fcap;
95 unsigned int fcap_ver;
96 unsigned char type;
97
98
99
100
101
102 bool should_free;
103};
104
105struct audit_proctitle {
106 int len;
107 char *value;
108};
109
110
111struct audit_context {
112 int dummy;
113 int in_syscall;
114 enum audit_state state, current_state;
115 unsigned int serial;
116 int major;
117 struct timespec64 ctime;
118 unsigned long argv[4];
119 long return_code;
120 u64 prio;
121 int return_valid;
122
123
124
125
126
127
128
129
130 struct audit_names preallocated_names[AUDIT_NAMES];
131 int name_count;
132 struct list_head names_list;
133 char *filterkey;
134 struct path pwd;
135 struct audit_aux_data *aux;
136 struct audit_aux_data *aux_pids;
137 struct sockaddr_storage *sockaddr;
138 size_t sockaddr_len;
139
140 pid_t pid, ppid;
141 kuid_t uid, euid, suid, fsuid;
142 kgid_t gid, egid, sgid, fsgid;
143 unsigned long personality;
144 int arch;
145
146 pid_t target_pid;
147 kuid_t target_auid;
148 kuid_t target_uid;
149 unsigned int target_sessionid;
150 u32 target_sid;
151 char target_comm[TASK_COMM_LEN];
152
153 struct audit_tree_refs *trees, *first_trees;
154 struct list_head killed_trees;
155 int tree_count;
156
157 int type;
158 union {
159 struct {
160 int nargs;
161 long args[6];
162 } socketcall;
163 struct {
164 kuid_t uid;
165 kgid_t gid;
166 umode_t mode;
167 u32 osid;
168 int has_perm;
169 uid_t perm_uid;
170 gid_t perm_gid;
171 umode_t perm_mode;
172 unsigned long qbytes;
173 } ipc;
174 struct {
175 mqd_t mqdes;
176 struct mq_attr mqstat;
177 } mq_getsetattr;
178 struct {
179 mqd_t mqdes;
180 int sigev_signo;
181 } mq_notify;
182 struct {
183 mqd_t mqdes;
184 size_t msg_len;
185 unsigned int msg_prio;
186 struct timespec64 abs_timeout;
187 } mq_sendrecv;
188 struct {
189 int oflag;
190 umode_t mode;
191 struct mq_attr attr;
192 } mq_open;
193 struct {
194 pid_t pid;
195 struct audit_cap_data cap;
196 } capset;
197 struct {
198 int fd;
199 int flags;
200 } mmap;
201 struct {
202 int argc;
203 } execve;
204 struct {
205 char *name;
206 } module;
207 };
208 int fds[2];
209 struct audit_proctitle proctitle;
210};
211
212extern bool audit_ever_enabled;
213
214extern void audit_log_session_info(struct audit_buffer *ab);
215
216extern int auditd_test_task(struct task_struct *task);
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 struct qstr *dname, const char *path, int plen);
235extern struct sk_buff *audit_make_reply(int seq, int type, int done, int multi,
236 const void *payload, int size);
237extern void audit_panic(const char *message);
238
239struct audit_netlink_list {
240 __u32 portid;
241 struct net *net;
242 struct sk_buff_head q;
243};
244
245int audit_send_list_thread(void *_dest);
246
247extern int selinux_audit_rule_update(void);
248
249extern struct mutex audit_filter_mutex;
250extern int audit_del_rule(struct audit_entry *entry);
251extern void audit_free_rule_rcu(struct rcu_head *head);
252extern struct list_head audit_filter_list[];
253
254extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
255
256extern void audit_log_d_path_exe(struct audit_buffer *ab,
257 struct mm_struct *mm);
258
259extern struct tty_struct *audit_get_tty(void);
260extern void audit_put_tty(struct tty_struct *tty);
261
262
263#ifdef CONFIG_AUDITSYSCALL
264extern unsigned int audit_serial(void);
265extern int auditsc_get_stamp(struct audit_context *ctx,
266 struct timespec64 *t, unsigned int *serial);
267
268extern void audit_put_watch(struct audit_watch *watch);
269extern void audit_get_watch(struct audit_watch *watch);
270extern int audit_to_watch(struct audit_krule *krule, char *path, int len,
271 u32 op);
272extern int audit_add_watch(struct audit_krule *krule, struct list_head **list);
273extern void audit_remove_watch_rule(struct audit_krule *krule);
274extern char *audit_watch_path(struct audit_watch *watch);
275extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino,
276 dev_t dev);
277
278extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule,
279 char *pathname, int len);
280extern char *audit_mark_path(struct audit_fsnotify_mark *mark);
281extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark);
282extern void audit_remove_mark_rule(struct audit_krule *krule);
283extern int audit_mark_compare(struct audit_fsnotify_mark *mark,
284 unsigned long ino, dev_t dev);
285extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old);
286extern int audit_exe_compare(struct task_struct *tsk,
287 struct audit_fsnotify_mark *mark);
288
289extern struct audit_chunk *audit_tree_lookup(const struct inode *inode);
290extern void audit_put_chunk(struct audit_chunk *chunk);
291extern bool audit_tree_match(struct audit_chunk *chunk,
292 struct audit_tree *tree);
293extern int audit_make_tree(struct audit_krule *rule, char *pathname, u32 op);
294extern int audit_add_tree_rule(struct audit_krule *rule);
295extern int audit_remove_tree_rule(struct audit_krule *rule);
296extern void audit_trim_trees(void);
297extern int audit_tag_tree(char *old, char *new);
298extern const char *audit_tree_path(struct audit_tree *tree);
299extern void audit_put_tree(struct audit_tree *tree);
300extern void audit_kill_trees(struct audit_context *context);
301
302extern int audit_signal_info(int sig, struct task_struct *t);
303extern int audit_signal_info_syscall(struct task_struct *t);
304extern void audit_filter_inodes(struct task_struct *tsk,
305 struct audit_context *ctx);
306extern struct list_head *audit_killed_trees(void);
307#else
308#define auditsc_get_stamp(c, t, s) 0
309#define audit_put_watch(w) do { } while (0)
310#define audit_get_watch(w) do { } while (0)
311#define audit_to_watch(k, p, l, o) (-EINVAL)
312#define audit_add_watch(k, l) (-EINVAL)
313#define audit_remove_watch_rule(k) BUG()
314#define audit_watch_path(w) ""
315#define audit_watch_compare(w, i, d) 0
316
317#define audit_alloc_mark(k, p, l) (ERR_PTR(-EINVAL))
318#define audit_mark_path(m) ""
319#define audit_remove_mark(m) do { } while (0)
320#define audit_remove_mark_rule(k) do { } while (0)
321#define audit_mark_compare(m, i, d) 0
322#define audit_exe_compare(t, m) (-EINVAL)
323#define audit_dupe_exe(n, o) (-EINVAL)
324
325#define audit_remove_tree_rule(rule) BUG()
326#define audit_add_tree_rule(rule) -EINVAL
327#define audit_make_tree(rule, str, op) -EINVAL
328#define audit_trim_trees() do { } while (0)
329#define audit_put_tree(tree) do { } while (0)
330#define audit_tag_tree(old, new) -EINVAL
331#define audit_tree_path(rule) ""
332#define audit_kill_trees(context) BUG()
333
334#define audit_signal_info(s, t) AUDIT_DISABLED
335static inline int audit_signal_info_syscall(struct task_struct *t)
336{
337 return 0;
338}
339
340#define audit_filter_inodes(t, c) AUDIT_DISABLED
341#endif
342
343extern char *audit_unpack_string(void **bufp, size_t *remain, size_t len);
344
345extern int audit_filter(int msgtype, unsigned int listtype);
346
347extern void audit_ctl_lock(void);
348extern void audit_ctl_unlock(void);
349