1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Authors: Karl MacMillan <kmacmillan@tresys. 2 /* Authors: Karl MacMillan <kmacmillan@tresys.com>
3 * Frank Mayer <mayerf@tresys.com> 3 * Frank Mayer <mayerf@tresys.com>
4 * Copyright (C) 2003 - 2004 Tresys T !! 4 *
>> 5 * Copyright (C) 2003 - 2004 Tresys Technology, LLC
5 */ 6 */
6 7
7 #ifndef _CONDITIONAL_H_ 8 #ifndef _CONDITIONAL_H_
8 #define _CONDITIONAL_H_ 9 #define _CONDITIONAL_H_
9 10
10 #include "avtab.h" 11 #include "avtab.h"
11 #include "symtab.h" 12 #include "symtab.h"
12 #include "policydb.h" 13 #include "policydb.h"
13 #include "../include/conditional.h" 14 #include "../include/conditional.h"
14 15
15 #define COND_EXPR_MAXDEPTH 10 16 #define COND_EXPR_MAXDEPTH 10
16 17
17 /* 18 /*
18 * A conditional expression is a list of opera 19 * A conditional expression is a list of operators and operands
19 * in reverse polish notation. 20 * in reverse polish notation.
20 */ 21 */
21 struct cond_expr_node { <<
22 #define COND_BOOL 1 /* plain bool */ <<
23 #define COND_NOT 2 /* !bool */ <<
24 #define COND_OR 3 /* bool || bool */ <<
25 #define COND_AND 4 /* bool && bool */ <<
26 #define COND_XOR 5 /* bool ^ bool */ <<
27 #define COND_EQ 6 /* bool == bool */ <<
28 #define COND_NEQ 7 /* bool != bool */ <<
29 #define COND_LAST COND_NEQ <<
30 u32 expr_type; <<
31 u32 boolean; <<
32 }; <<
33 <<
34 struct cond_expr { 22 struct cond_expr {
35 struct cond_expr_node *nodes; !! 23 #define COND_BOOL 1 /* plain bool */
36 u32 len; !! 24 #define COND_NOT 2 /* !bool */
>> 25 #define COND_OR 3 /* bool || bool */
>> 26 #define COND_AND 4 /* bool && bool */
>> 27 #define COND_XOR 5 /* bool ^ bool */
>> 28 #define COND_EQ 6 /* bool == bool */
>> 29 #define COND_NEQ 7 /* bool != bool */
>> 30 #define COND_LAST COND_NEQ
>> 31 __u32 expr_type;
>> 32 __u32 bool;
>> 33 struct cond_expr *next;
37 }; 34 };
38 35
39 /* 36 /*
40 * Each cond_node contains a list of rules to 37 * Each cond_node contains a list of rules to be enabled/disabled
41 * depending on the current value of the condi 38 * depending on the current value of the conditional expression. This
42 * struct is for that list. 39 * struct is for that list.
43 */ 40 */
44 struct cond_av_list { 41 struct cond_av_list {
45 struct avtab_node **nodes; !! 42 struct avtab_node *node;
46 u32 len; !! 43 struct cond_av_list *next;
47 }; 44 };
48 45
49 /* 46 /*
50 * A cond node represents a conditional block 47 * A cond node represents a conditional block in a policy. It
51 * contains a conditional expression, the curr 48 * contains a conditional expression, the current state of the expression,
52 * two lists of rules to enable/disable depend 49 * two lists of rules to enable/disable depending on the value of the
53 * expression (the true list corresponds to if 50 * expression (the true list corresponds to if and the false list corresponds
54 * to else).. 51 * to else)..
55 */ 52 */
56 struct cond_node { 53 struct cond_node {
57 int cur_state; 54 int cur_state;
58 struct cond_expr expr; !! 55 struct cond_expr *expr;
59 struct cond_av_list true_list; !! 56 struct cond_av_list *true_list;
60 struct cond_av_list false_list; !! 57 struct cond_av_list *false_list;
>> 58 struct cond_node *next;
61 }; 59 };
62 60
63 void cond_policydb_init(struct policydb *p); !! 61 int cond_policydb_init(struct policydb *p);
64 void cond_policydb_destroy(struct policydb *p) 62 void cond_policydb_destroy(struct policydb *p);
65 63
66 int cond_init_bool_indexes(struct policydb *p) 64 int cond_init_bool_indexes(struct policydb *p);
67 int cond_destroy_bool(void *key, void *datum, 65 int cond_destroy_bool(void *key, void *datum, void *p);
68 66
69 int cond_index_bool(void *key, void *datum, vo 67 int cond_index_bool(void *key, void *datum, void *datap);
70 68
71 int cond_read_bool(struct policydb *p, struct !! 69 int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp);
72 int cond_read_list(struct policydb *p, void *f 70 int cond_read_list(struct policydb *p, void *fp);
73 int cond_write_bool(void *key, void *datum, vo 71 int cond_write_bool(void *key, void *datum, void *ptr);
74 int cond_write_list(struct policydb *p, void * !! 72 int cond_write_list(struct policydb *p, struct cond_node *list, void *fp);
75 73
76 void cond_compute_av(struct avtab *ctab, struc 74 void cond_compute_av(struct avtab *ctab, struct avtab_key *key,
77 struct av_decision *avd, !! 75 struct av_decision *avd, struct extended_perms *xperms);
78 void cond_compute_xperms(struct avtab *ctab, s 76 void cond_compute_xperms(struct avtab *ctab, struct avtab_key *key,
79 struct extended_perms !! 77 struct extended_perms_decision *xpermd);
80 void evaluate_cond_nodes(struct policydb *p); !! 78 int evaluate_cond_node(struct policydb *p, struct cond_node *node);
81 void cond_policydb_destroy_dup(struct policydb <<
82 int cond_policydb_dup(struct policydb *new, co <<
83 79
84 #endif /* _CONDITIONAL_H_ */ 80 #endif /* _CONDITIONAL_H_ */
85 81
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.