mirror of
https://github.com/topjohnwu/selinux.git
synced 2024-11-27 13:30:48 +00:00
80f26c5ee8
Both boolean and tunable keywords are processed by define_bool_tunable(), argument 0 and 1 would be passed for boolean and tunable respectively. For tunable, a TUNABLE flag would be set in cond_bool_datum_t.flags. Note, when creating an if-else conditional we can not know if the tunable identifier is indeed a tunable(for example, a boolean may be misused in tunable_policy() or vice versa), thus the TUNABLE flag for cond_node_t would be calculated and used in expansion when all booleans/tunables copied during link. Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Dan Walsh <dwalsh@redhat.com>
110 lines
4.4 KiB
C
110 lines
4.4 KiB
C
/* Author : Joshua Brindle <jbrindle@tresys.com>
|
|
* Karl MacMillan <kmacmillan@tresys.com>
|
|
* Jason Tang <jtang@tresys.com>
|
|
* Added support for binary policy modules
|
|
*
|
|
* Copyright (C) 2004 - 2005 Tresys Technology, LLC
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, version 2.
|
|
*/
|
|
|
|
#ifndef MODULE_COMPILER_H
|
|
#define MODULE_COMPILER_H
|
|
|
|
#include <sepol/policydb/hashtab.h>
|
|
|
|
/* Called when checkpolicy begins to parse a policy -- either at the
|
|
* very beginning for a kernel/base policy, or after the module header
|
|
* for policy modules. Initialize the memory structures within.
|
|
* Return 0 on success, -1 on error. */
|
|
int define_policy(int pass, int module_header_given);
|
|
|
|
/* Declare a symbol declaration to the current avrule_decl. Check
|
|
* that insertion is allowed here and that the symbol does not already
|
|
* exist. Returns 0 on success, 1 if symbol was already there (caller
|
|
* needs to free() the datum), -1 if declarations not allowed, -2 for
|
|
* duplicate declarations, -3 for all else.
|
|
*/
|
|
int declare_symbol(uint32_t symbol_type,
|
|
hashtab_key_t key, hashtab_datum_t datum,
|
|
uint32_t * dest_value, uint32_t * datum_value);
|
|
|
|
role_datum_t *declare_role(unsigned char isattr);
|
|
type_datum_t *declare_type(unsigned char primary, unsigned char isattr);
|
|
user_datum_t *declare_user(void);
|
|
|
|
type_datum_t *get_local_type(char *id, uint32_t value, unsigned char isattr);
|
|
role_datum_t *get_local_role(char *id, uint32_t value, unsigned char isattr);
|
|
|
|
/* Add a symbol to the current avrule_block's require section. Note
|
|
* that a module may not both declare and require the same symbol.
|
|
* Returns 0 on success, -1 on error. */
|
|
int require_symbol(uint32_t symbol_type,
|
|
hashtab_key_t key, hashtab_datum_t datum,
|
|
uint32_t * dest_value, uint32_t * datum_value);
|
|
|
|
/* Enable a permission for a class within the current avrule_decl.
|
|
* Return 0 on success, -1 if out of memory. */
|
|
int add_perm_to_class(uint32_t perm_value, uint32_t class_value);
|
|
|
|
/* Functions called from REQUIRE blocks. Add the first symbol on the
|
|
* id_queue to this avrule_decl's scope if not already there.
|
|
* c.f. require_symbol(). */
|
|
int require_class(int pass);
|
|
int require_role(int pass);
|
|
int require_type(int pass);
|
|
int require_attribute(int pass);
|
|
int require_attribute_role(int pass);
|
|
int require_user(int pass);
|
|
int require_bool(int pass);
|
|
int require_tunable(int pass);
|
|
int require_sens(int pass);
|
|
int require_cat(int pass);
|
|
|
|
/* Check if an identifier is within the scope of the current
|
|
* declaration or any of its parents. Return 1 if it is, 0 if not.
|
|
* If the identifier is not known at all then return 1 (truth). */
|
|
int is_id_in_scope(uint32_t symbol_type, hashtab_key_t id);
|
|
|
|
/* Check if a particular permission is within the scope of the current
|
|
* declaration or any of its parents. Return 1 if it is, 0 if not.
|
|
* If the identifier is not known at all then return 1 (truth). */
|
|
int is_perm_in_scope(hashtab_key_t perm_id, hashtab_key_t class_id);
|
|
|
|
/* Search the current avrules block for a conditional with the same
|
|
* expression as 'cond'. If the conditional does not exist then
|
|
* create one. Either way, return the conditional. */
|
|
cond_list_t *get_current_cond_list(cond_list_t * cond);
|
|
|
|
/* Append rule to the current avrule_block. */
|
|
void append_cond_list(cond_list_t * cond);
|
|
void append_avrule(avrule_t * avrule);
|
|
void append_role_trans(role_trans_rule_t * role_tr_rules);
|
|
void append_role_allow(role_allow_rule_t * role_allow_rules);
|
|
void append_range_trans(range_trans_rule_t * range_tr_rules);
|
|
void append_filename_trans(filename_trans_rule_t * filename_trans_rules);
|
|
|
|
/* Create a new optional block and add it to the global policy.
|
|
* During the second pass resolve the block's requirements. Return 0
|
|
* on success, -1 on error.
|
|
*/
|
|
int begin_optional(int pass);
|
|
int end_optional(int pass);
|
|
|
|
/* ELSE blocks are similar to normal blocks with the following two
|
|
* limitations:
|
|
* - no declarations are allowed within else branches
|
|
* - no REQUIRES are allowed; the else branch inherits the parent's
|
|
* requirements
|
|
*/
|
|
int begin_optional_else(int pass);
|
|
|
|
/* Called whenever existing an avrule block. Check that the block had
|
|
* a non-empty REQUIRE section. If so pop the block off of the scop
|
|
* stack and return 0. If not then send an error to yyerror and
|
|
* return -1. */
|
|
int end_avrule_block(int pass);
|
|
|
|
#endif
|