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24#ifndef _SS_POLICYDB_H_
25#define _SS_POLICYDB_H_
26
27#include <linux/flex_array.h>
28
29#include "symtab.h"
30#include "avtab.h"
31#include "sidtab.h"
32#include "ebitmap.h"
33#include "mls_types.h"
34#include "context.h"
35#include "constraint.h"
36
37
38
39
40
41
42
43
44
45struct perm_datum {
46 u32 value;
47};
48
49
50struct common_datum {
51 u32 value;
52 struct symtab permissions;
53};
54
55
56struct class_datum {
57 u32 value;
58 char *comkey;
59 struct common_datum *comdatum;
60 struct symtab permissions;
61 struct constraint_node *constraints;
62 struct constraint_node *validatetrans;
63
64#define DEFAULT_SOURCE 1
65#define DEFAULT_TARGET 2
66 char default_user;
67 char default_role;
68 char default_type;
69
70#define DEFAULT_SOURCE_LOW 1
71#define DEFAULT_SOURCE_HIGH 2
72#define DEFAULT_SOURCE_LOW_HIGH 3
73#define DEFAULT_TARGET_LOW 4
74#define DEFAULT_TARGET_HIGH 5
75#define DEFAULT_TARGET_LOW_HIGH 6
76 char default_range;
77};
78
79
80struct role_datum {
81 u32 value;
82 u32 bounds;
83 struct ebitmap dominates;
84 struct ebitmap types;
85};
86
87struct role_trans {
88 u32 role;
89 u32 type;
90 u32 tclass;
91 u32 new_role;
92 struct role_trans *next;
93};
94
95struct filename_trans {
96 u32 stype;
97 u32 ttype;
98 u16 tclass;
99 const char *name;
100};
101
102struct filename_trans_datum {
103 u32 otype;
104};
105
106struct role_allow {
107 u32 role;
108 u32 new_role;
109 struct role_allow *next;
110};
111
112
113struct type_datum {
114 u32 value;
115 u32 bounds;
116 unsigned char primary;
117 unsigned char attribute;
118};
119
120
121struct user_datum {
122 u32 value;
123 u32 bounds;
124 struct ebitmap roles;
125 struct mls_range range;
126 struct mls_level dfltlevel;
127};
128
129
130
131struct level_datum {
132 struct mls_level *level;
133 unsigned char isalias;
134};
135
136
137struct cat_datum {
138 u32 value;
139 unsigned char isalias;
140};
141
142struct range_trans {
143 u32 source_type;
144 u32 target_type;
145 u32 target_class;
146};
147
148
149struct cond_bool_datum {
150 __u32 value;
151 int state;
152};
153
154struct cond_node;
155
156
157
158
159
160
161
162
163struct ocontext {
164 union {
165 char *name;
166 struct {
167 u8 protocol;
168 u16 low_port;
169 u16 high_port;
170 } port;
171 struct {
172 u32 addr;
173 u32 mask;
174 } node;
175 struct {
176 u32 addr[4];
177 u32 mask[4];
178 } node6;
179 } u;
180 union {
181 u32 sclass;
182 u32 behavior;
183 } v;
184 struct context context[2];
185 u32 sid[2];
186 struct ocontext *next;
187};
188
189struct genfs {
190 char *fstype;
191 struct ocontext *head;
192 struct genfs *next;
193};
194
195
196#define SYM_COMMONS 0
197#define SYM_CLASSES 1
198#define SYM_ROLES 2
199#define SYM_TYPES 3
200#define SYM_USERS 4
201#define SYM_BOOLS 5
202#define SYM_LEVELS 6
203#define SYM_CATS 7
204#define SYM_NUM 8
205
206
207#define OCON_ISID 0
208#define OCON_FS 1
209#define OCON_PORT 2
210#define OCON_NETIF 3
211#define OCON_NODE 4
212#define OCON_FSUSE 5
213#define OCON_NODE6 6
214#define OCON_NUM 7
215
216
217struct policydb {
218 int mls_enabled;
219
220
221 struct symtab symtab[SYM_NUM];
222#define p_commons symtab[SYM_COMMONS]
223#define p_classes symtab[SYM_CLASSES]
224#define p_roles symtab[SYM_ROLES]
225#define p_types symtab[SYM_TYPES]
226#define p_users symtab[SYM_USERS]
227#define p_bools symtab[SYM_BOOLS]
228#define p_levels symtab[SYM_LEVELS]
229#define p_cats symtab[SYM_CATS]
230
231
232 struct flex_array *sym_val_to_name[SYM_NUM];
233
234
235 struct class_datum **class_val_to_struct;
236 struct role_datum **role_val_to_struct;
237 struct user_datum **user_val_to_struct;
238 struct flex_array *type_val_to_struct_array;
239
240
241 struct avtab te_avtab;
242
243
244 struct role_trans *role_tr;
245
246
247
248 struct ebitmap filename_trans_ttypes;
249
250 struct hashtab *filename_trans;
251
252
253 struct cond_bool_datum **bool_val_to_struct;
254
255 struct avtab te_cond_avtab;
256
257 struct cond_node *cond_list;
258
259
260 struct role_allow *role_allow;
261
262
263
264 struct ocontext *ocontexts[OCON_NUM];
265
266
267
268
269 struct genfs *genfs;
270
271
272 struct hashtab *range_tr;
273
274
275 struct flex_array *type_attr_map_array;
276
277 struct ebitmap policycaps;
278
279 struct ebitmap permissive_map;
280
281
282 size_t len;
283
284 unsigned int policyvers;
285
286 unsigned int reject_unknown : 1;
287 unsigned int allow_unknown : 1;
288
289 u16 process_class;
290 u32 process_trans_perms;
291};
292
293extern void policydb_destroy(struct policydb *p);
294extern int policydb_load_isids(struct policydb *p, struct sidtab *s);
295extern int policydb_context_isvalid(struct policydb *p, struct context *c);
296extern int policydb_class_isvalid(struct policydb *p, unsigned int class);
297extern int policydb_type_isvalid(struct policydb *p, unsigned int type);
298extern int policydb_role_isvalid(struct policydb *p, unsigned int role);
299extern int policydb_read(struct policydb *p, void *fp);
300extern int policydb_write(struct policydb *p, void *fp);
301
302#define PERM_SYMTAB_SIZE 32
303
304#define POLICYDB_CONFIG_MLS 1
305
306
307#define REJECT_UNKNOWN 0x00000002
308#define ALLOW_UNKNOWN 0x00000004
309
310#define OBJECT_R "object_r"
311#define OBJECT_R_VAL 1
312
313#define POLICYDB_MAGIC SELINUX_MAGIC
314#define POLICYDB_STRING "SE Linux"
315
316struct policy_file {
317 char *data;
318 size_t len;
319};
320
321struct policy_data {
322 struct policydb *p;
323 void *fp;
324};
325
326static inline int next_entry(void *buf, struct policy_file *fp, size_t bytes)
327{
328 if (bytes > fp->len)
329 return -EINVAL;
330
331 memcpy(buf, fp->data, bytes);
332 fp->data += bytes;
333 fp->len -= bytes;
334 return 0;
335}
336
337static inline int put_entry(const void *buf, size_t bytes, int num, struct policy_file *fp)
338{
339 size_t len = bytes * num;
340
341 memcpy(fp->data, buf, len);
342 fp->data += len;
343 fp->len -= len;
344
345 return 0;
346}
347
348static inline char *sym_name(struct policydb *p, unsigned int sym_num, unsigned int element_nr)
349{
350 struct flex_array *fa = p->sym_val_to_name[sym_num];
351
352 return flex_array_get_ptr(fa, element_nr);
353}
354
355extern u16 string_to_security_class(struct policydb *p, const char *name);
356extern u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name);
357
358#endif
359
360