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libsepol/cil: remove unnecessary hash tables

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The filename_- and range_trans_table ancillary hash tables in
cil_binary.c just duplicate the final policydb content and can be simply
removed.

Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
This commit is contained in:
Ondrej Mosnacek 2020-02-07 15:58:16 +01:00 committed by James Carter
parent cfa868e4d3
commit a60343cabf
2 changed files with 20 additions and 109 deletions
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123
libsepol/cil/src/cil_binary.c
View File

@ -59,8 +59,6 @@
/* There are 44000 filename_trans in current fedora policy. 1.33 times this is the recommended
* size of a hashtable. The next power of 2 of this is 2 ** 16.
*/
#define FILENAME_TRANS_TABLE_SIZE (1 << 16)
#define RANGE_TRANS_TABLE_SIZE (1 << 13)
#define ROLE_TRANS_TABLE_SIZE (1 << 10)
#define AVRULEX_TABLE_SIZE (1 << 10)
#define PERMS_PER_CLASS 32
@ -70,8 +68,6 @@ struct cil_args_binary {
policydb_t *pdb;
struct cil_list *neverallows;
int pass;
hashtab_t filename_trans_table;
hashtab_t range_trans_table;
hashtab_t role_trans_table;
hashtab_t avrulex_ioctl_table;
void **type_value_to_cil;
@ -82,7 +78,6 @@ struct cil_args_booleanif {
policydb_t *pdb;
cond_node_t *cond_node;
enum cil_flavor cond_flavor;
hashtab_t filename_trans_table;
};
static int __cil_get_sepol_user_datum(policydb_t *pdb, struct cil_symtab_datum *datum, user_datum_t **sepol_user)
@ -1129,7 +1124,7 @@ int cil_type_rule_to_policydb(policydb_t *pdb, const struct cil_db *db, struct c
return __cil_type_rule_to_avtab(pdb, db, cil_rule, NULL, CIL_FALSE);
}
int __cil_typetransition_to_avtab(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans, cond_node_t *cond_node, enum cil_flavor cond_flavor, hashtab_t filename_trans_table)
int __cil_typetransition_to_avtab(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_src = NULL;
@ -1179,7 +1174,6 @@ int __cil_typetransition_to_avtab(policydb_t *pdb, const struct cil_db *db, stru
if (rc != SEPOL_OK) goto exit;
cil_list_for_each(c, class_list) {
int add = CIL_TRUE;
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_obj);
if (rc != SEPOL_OK) goto exit;
@ -1191,11 +1185,13 @@ int __cil_typetransition_to_avtab(policydb_t *pdb, const struct cil_db *db, stru
newkey->name = cil_strdup(name);
newdatum->otype = sepol_result->s.value;
rc = hashtab_insert(filename_trans_table, (hashtab_key_t)newkey, newdatum);
rc = hashtab_insert(pdb->filename_trans,
(hashtab_key_t)newkey,
newdatum);
if (rc != SEPOL_OK) {
if (rc == SEPOL_EEXIST) {
add = CIL_FALSE;
otype = hashtab_search(filename_trans_table, (hashtab_key_t)newkey);
otype = hashtab_search(pdb->filename_trans,
(hashtab_key_t)newkey);
if (newdatum->otype != otype->otype) {
cil_log(CIL_ERR, "Conflicting name type transition rules\n");
} else {
@ -1204,17 +1200,6 @@ int __cil_typetransition_to_avtab(policydb_t *pdb, const struct cil_db *db, stru
} else {
cil_log(CIL_ERR, "Out of memory\n");
}
}
if (add == CIL_TRUE) {
rc = hashtab_insert(pdb->filename_trans,
(hashtab_key_t)newkey,
newdatum);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR, "Out of memory\n");
goto exit;
}
} else {
free(newkey->name);
free(newkey);
free(newdatum);
@ -1235,9 +1220,9 @@ exit:
return rc;
}
int cil_typetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans, hashtab_t filename_trans_table)
int cil_typetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans)
{
return __cil_typetransition_to_avtab(pdb, db, typetrans, NULL, CIL_FALSE, filename_trans_table);
return __cil_typetransition_to_avtab(pdb, db, typetrans, NULL, CIL_FALSE);
}
int __perm_str_to_datum(char *perm_str, class_datum_t *sepol_class, uint32_t *datum)
@ -1925,7 +1910,6 @@ int __cil_cond_to_policydb_helper(struct cil_tree_node *node, __attribute__((unu
struct cil_type_rule *cil_type_rule;
struct cil_avrule *cil_avrule;
struct cil_nametypetransition *cil_typetrans;
hashtab_t filename_trans_table = args->filename_trans_table;
flavor = node->flavor;
switch (flavor) {
@ -1936,7 +1920,7 @@ int __cil_cond_to_policydb_helper(struct cil_tree_node *node, __attribute__((unu
cil_tree_log(node, CIL_ERR,"Invalid typetransition statement");
goto exit;
}
rc = __cil_typetransition_to_avtab(pdb, db, cil_typetrans, cond_node, cond_flavor, filename_trans_table);
rc = __cil_typetransition_to_avtab(pdb, db, cil_typetrans, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
cil_tree_log(node, CIL_ERR, "Failed to insert type transition into avtab");
goto exit;
@ -2205,7 +2189,7 @@ static int __cil_cond_expr_to_sepol_expr(policydb_t *pdb, struct cil_list *cil_e
return SEPOL_OK;
}
int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_tree_node *node, hashtab_t filename_trans_table)
int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_tree_node *node)
{
int rc = SEPOL_ERR;
struct cil_args_booleanif bool_args;
@ -2280,7 +2264,6 @@ int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct c
bool_args.db = db;
bool_args.pdb = pdb;
bool_args.cond_node = cond_node;
bool_args.filename_trans_table = filename_trans_table;
if (true_node != NULL) {
bool_args.cond_flavor = CIL_CONDTRUE;
@ -3089,7 +3072,7 @@ exit:
return rc;
}
int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_rangetransition *rangetrans, hashtab_t range_trans_table)
int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_rangetransition *rangetrans)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_src = NULL;
@ -3121,7 +3104,6 @@ int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, st
if (rc != SEPOL_OK) goto exit;
cil_list_for_each(c, class_list) {
int add = CIL_TRUE;
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_class);
if (rc != SEPOL_OK) goto exit;
@ -3137,11 +3119,10 @@ int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, st
goto exit;
}
rc = hashtab_insert(range_trans_table, (hashtab_key_t)newkey, newdatum);
rc = hashtab_insert(pdb->range_tr, (hashtab_key_t)newkey, newdatum);
if (rc != SEPOL_OK) {
if (rc == SEPOL_EEXIST) {
add = CIL_FALSE;
o_range = hashtab_search(range_trans_table, (hashtab_key_t)newkey);
o_range = hashtab_search(pdb->range_tr, (hashtab_key_t)newkey);
if (!mls_range_eq(newdatum, o_range)) {
cil_log(CIL_ERR, "Conflicting Range transition rules\n");
} else {
@ -3150,27 +3131,13 @@ int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, st
} else {
cil_log(CIL_ERR, "Out of memory\n");
}
}
if (add == CIL_TRUE) {
rc = hashtab_insert(pdb->range_tr,
(hashtab_key_t)newkey,
newdatum);
if (rc != SEPOL_OK) {
mls_range_destroy(newdatum);
free(newdatum);
free(newkey);
cil_log(CIL_ERR, "Out of memory\n");
goto exit;
}
} else {
mls_range_destroy(newdatum);
free(newdatum);
free(newkey);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
}
}
}
@ -3639,16 +3606,12 @@ int __cil_node_to_policydb(struct cil_tree_node *node, void *extra_args)
struct cil_args_binary *args = extra_args;
const struct cil_db *db;
policydb_t *pdb;
hashtab_t filename_trans_table;
hashtab_t range_trans_table;
hashtab_t role_trans_table;
void **type_value_to_cil;
db = args->db;
pdb = args->pdb;
pass = args->pass;
filename_trans_table = args->filename_trans_table;
range_trans_table = args->range_trans_table;
role_trans_table = args->role_trans_table;
type_value_to_cil = args->type_value_to_cil;
@ -3747,7 +3710,7 @@ int __cil_node_to_policydb(struct cil_tree_node *node, void *extra_args)
/*rc = cil_roleattributeset_to_policydb(pdb, node->data);*/
break;
case CIL_NAMETYPETRANSITION:
rc = cil_typetransition_to_policydb(pdb, db, node->data, filename_trans_table);
rc = cil_typetransition_to_policydb(pdb, db, node->data);
break;
case CIL_CONSTRAIN:
rc = cil_constrain_to_policydb(pdb, db, node->data);
@ -3767,7 +3730,7 @@ int __cil_node_to_policydb(struct cil_tree_node *node, void *extra_args)
break;
case CIL_RANGETRANSITION:
if (pdb->mls == CIL_TRUE) {
rc = cil_rangetransition_to_policydb(pdb, db, node->data, range_trans_table);
rc = cil_rangetransition_to_policydb(pdb, db, node->data);
}
break;
case CIL_DEFAULTUSER:
@ -3785,7 +3748,7 @@ int __cil_node_to_policydb(struct cil_tree_node *node, void *extra_args)
case 3:
switch (node->flavor) {
case CIL_BOOLEANIF:
rc = cil_booleanif_to_policydb(pdb, db, node, filename_trans_table);
rc = cil_booleanif_to_policydb(pdb, db, node);
break;
case CIL_AVRULE: {
struct cil_avrule *rule = node->data;
@ -4193,40 +4156,6 @@ exit:
return rc;
}
static unsigned int filename_trans_hash(hashtab_t h, const_hashtab_key_t key)
{
const filename_trans_t *k = (const filename_trans_t *)key;
return ((k->tclass + (k->ttype << 2) +
(k->stype << 9)) & (h->size - 1));
}
static int filename_trans_compare(hashtab_t h
__attribute__ ((unused)), const_hashtab_key_t key1,
const_hashtab_key_t key2)
{
const filename_trans_t *a = (const filename_trans_t *)key1;
const filename_trans_t *b = (const filename_trans_t *)key2;
return a->stype != b->stype || a->ttype != b->ttype || a->tclass != b->tclass || strcmp(a->name, b->name);
}
static unsigned int range_trans_hash(hashtab_t h, const_hashtab_key_t key)
{
const range_trans_t *k = (const range_trans_t *)key;
return ((k->target_class + (k->target_type << 2) +
(k->source_type << 5)) & (h->size - 1));
}
static int range_trans_compare(hashtab_t h
__attribute__ ((unused)), const_hashtab_key_t key1,
const_hashtab_key_t key2)
{
const range_trans_t *a = (const range_trans_t *)key1;
const range_trans_t *b = (const range_trans_t *)key2;
return a->source_type != b->source_type || a->target_type != b->target_type || a->target_class != b->target_class;
}
static unsigned int role_trans_hash(hashtab_t h, const_hashtab_key_t key)
{
const role_trans_t *k = (const role_trans_t *)key;
@ -4872,8 +4801,6 @@ int cil_binary_create_allocated_pdb(const struct cil_db *db, sepol_policydb_t *p
struct cil_args_binary extra_args;
policydb_t *pdb = &policydb->p;
struct cil_list *neverallows = NULL;
hashtab_t filename_trans_table = NULL;
hashtab_t range_trans_table = NULL;
hashtab_t role_trans_table = NULL;
hashtab_t avrulex_ioctl_table = NULL;
void **type_value_to_cil = NULL;
@ -4911,18 +4838,6 @@ int cil_binary_create_allocated_pdb(const struct cil_db *db, sepol_policydb_t *p
goto exit;
}
filename_trans_table = hashtab_create(filename_trans_hash, filename_trans_compare, FILENAME_TRANS_TABLE_SIZE);
if (!filename_trans_table) {
cil_log(CIL_INFO, "Failure to create hashtab for filename_trans\n");
goto exit;
}
range_trans_table = hashtab_create(range_trans_hash, range_trans_compare, RANGE_TRANS_TABLE_SIZE);
if (!range_trans_table) {
cil_log(CIL_INFO, "Failure to create hashtab for range_trans\n");
goto exit;
}
role_trans_table = hashtab_create(role_trans_hash, role_trans_compare, ROLE_TRANS_TABLE_SIZE);
if (!role_trans_table) {
cil_log(CIL_INFO, "Failure to create hashtab for role_trans\n");
@ -4940,8 +4855,6 @@ int cil_binary_create_allocated_pdb(const struct cil_db *db, sepol_policydb_t *p
extra_args.db = db;
extra_args.pdb = pdb;
extra_args.neverallows = neverallows;
extra_args.filename_trans_table = filename_trans_table;
extra_args.range_trans_table = range_trans_table;
extra_args.role_trans_table = role_trans_table;
extra_args.avrulex_ioctl_table = avrulex_ioctl_table;
extra_args.type_value_to_cil = type_value_to_cil;
@ -5039,8 +4952,6 @@ int cil_binary_create_allocated_pdb(const struct cil_db *db, sepol_policydb_t *p
rc = SEPOL_OK;
exit:
hashtab_destroy(filename_trans_table);
hashtab_destroy(range_trans_table);
hashtab_destroy(role_trans_table);
hashtab_destroy(avrulex_ioctl_table);
free(type_value_to_cil);

6
libsepol/cil/src/cil_binary.h
View File

@ -263,7 +263,7 @@ int cil_avrule_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_
*
* @return SEPOL_OK upon success or an error otherwise.
*/
int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_tree_node *node, hashtab_t filename_trans_table);
int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_tree_node *node);
/**
* Insert cil role transition structure into sepol policydb.
@ -293,7 +293,7 @@ int cil_roleallow_to_policydb(policydb_t *pdb, const struct cil_db *db, struct c
*
* @return SEPOL_OK upon success or SEPOL_ERR upon error.
*/
int cil_typetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans, hashtab_t filename_trans_table);
int cil_typetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans);
/**
* Insert cil constrain/mlsconstrain structure(s) into sepol policydb.
@ -327,7 +327,7 @@ int cil_sepol_level_define(policydb_t *pdb, struct cil_sens *cil_sens);
*
* @return SEPOL_OK upon success or an error otherwise.
*/
int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_rangetransition *rangetrans, hashtab_t range_trans_table);
int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_rangetransition *rangetrans);
/**
* Insert cil ibpkeycon structure into sepol policydb.