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Diffstat (limited to 'security/selinux/ss/policydb.c')
-rw-r--r--security/selinux/ss/policydb.c47
1 files changed, 45 insertions, 2 deletions
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 72e4a54973a..f03667213ea 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -713,7 +713,6 @@ void policydb_destroy(struct policydb *p)
ebitmap_destroy(&p->type_attr_map[i]);
}
kfree(p->type_attr_map);
- kfree(p->undefined_perms);
ebitmap_destroy(&p->policycaps);
ebitmap_destroy(&p->permissive_map);
@@ -1640,6 +1639,40 @@ static int policydb_bounds_sanity_check(struct policydb *p)
extern int ss_initialized;
+u16 string_to_security_class(struct policydb *p, const char *name)
+{
+ struct class_datum *cladatum;
+
+ cladatum = hashtab_search(p->p_classes.table, name);
+ if (!cladatum)
+ return 0;
+
+ return cladatum->value;
+}
+
+u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name)
+{
+ struct class_datum *cladatum;
+ struct perm_datum *perdatum = NULL;
+ struct common_datum *comdatum;
+
+ if (!tclass || tclass > p->p_classes.nprim)
+ return 0;
+
+ cladatum = p->class_val_to_struct[tclass-1];
+ comdatum = cladatum->comdatum;
+ if (comdatum)
+ perdatum = hashtab_search(comdatum->permissions.table,
+ name);
+ if (!perdatum)
+ perdatum = hashtab_search(cladatum->permissions.table,
+ name);
+ if (!perdatum)
+ return 0;
+
+ return 1U << (perdatum->value-1);
+}
+
/*
* Read the configuration data from a policy database binary
* representation file into a policy database structure.
@@ -1861,6 +1894,16 @@ int policydb_read(struct policydb *p, void *fp)
if (rc)
goto bad;
+ p->process_class = string_to_security_class(p, "process");
+ if (!p->process_class)
+ goto bad;
+ p->process_trans_perms = string_to_av_perm(p, p->process_class,
+ "transition");
+ p->process_trans_perms |= string_to_av_perm(p, p->process_class,
+ "dyntransition");
+ if (!p->process_trans_perms)
+ goto bad;
+
for (i = 0; i < info->ocon_num; i++) {
rc = next_entry(buf, fp, sizeof(u32));
if (rc < 0)
@@ -2101,7 +2144,7 @@ int policydb_read(struct policydb *p, void *fp)
goto bad;
rt->target_class = le32_to_cpu(buf[0]);
} else
- rt->target_class = SECCLASS_PROCESS;
+ rt->target_class = p->process_class;
if (!policydb_type_isvalid(p, rt->source_type) ||
!policydb_type_isvalid(p, rt->target_type) ||
!policydb_class_isvalid(p, rt->target_class)) {