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-rw-r--r--security/selinux/ss/mls.h116
1 files changed, 116 insertions, 0 deletions
diff --git a/security/selinux/ss/mls.h b/security/selinux/ss/mls.h
new file mode 100644
index 000000000..15cacde0f
--- /dev/null
+++ b/security/selinux/ss/mls.h
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Multi-level security (MLS) policy operations.
+ *
+ * Author : Stephen Smalley, <sds@tycho.nsa.gov>
+ */
+/*
+ * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
+ *
+ * Support for enhanced MLS infrastructure.
+ *
+ * Copyright (C) 2004-2006 Trusted Computer Solutions, Inc.
+ */
+/*
+ * Updated: Hewlett-Packard <paul@paul-moore.com>
+ *
+ * Added support to import/export the MLS label from NetLabel
+ *
+ * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
+ */
+
+#ifndef _SS_MLS_H_
+#define _SS_MLS_H_
+
+#include <linux/jhash.h>
+
+#include "context.h"
+#include "ebitmap.h"
+#include "policydb.h"
+
+int mls_compute_context_len(struct policydb *p, struct context *context);
+void mls_sid_to_context(struct policydb *p, struct context *context,
+ char **scontext);
+int mls_context_isvalid(struct policydb *p, struct context *c);
+int mls_range_isvalid(struct policydb *p, struct mls_range *r);
+int mls_level_isvalid(struct policydb *p, struct mls_level *l);
+
+int mls_context_to_sid(struct policydb *p,
+ char oldc,
+ char *scontext,
+ struct context *context,
+ struct sidtab *s,
+ u32 def_sid);
+
+int mls_from_string(struct policydb *p, char *str, struct context *context,
+ gfp_t gfp_mask);
+
+int mls_range_set(struct context *context, struct mls_range *range);
+
+int mls_convert_context(struct policydb *oldp,
+ struct policydb *newp,
+ struct context *oldc,
+ struct context *newc);
+
+int mls_compute_sid(struct policydb *p,
+ struct context *scontext,
+ struct context *tcontext,
+ u16 tclass,
+ u32 specified,
+ struct context *newcontext,
+ bool sock);
+
+int mls_setup_user_range(struct policydb *p,
+ struct context *fromcon, struct user_datum *user,
+ struct context *usercon);
+
+#ifdef CONFIG_NETLABEL
+void mls_export_netlbl_lvl(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr);
+void mls_import_netlbl_lvl(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr);
+int mls_export_netlbl_cat(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr);
+int mls_import_netlbl_cat(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr);
+#else
+static inline void mls_export_netlbl_lvl(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr)
+{
+ return;
+}
+static inline void mls_import_netlbl_lvl(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr)
+{
+ return;
+}
+static inline int mls_export_netlbl_cat(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr)
+{
+ return -ENOMEM;
+}
+static inline int mls_import_netlbl_cat(struct policydb *p,
+ struct context *context,
+ struct netlbl_lsm_secattr *secattr)
+{
+ return -ENOMEM;
+}
+#endif
+
+static inline u32 mls_range_hash(const struct mls_range *r, u32 hash)
+{
+ hash = jhash_2words(r->level[0].sens, r->level[1].sens, hash);
+ hash = ebitmap_hash(&r->level[0].cat, hash);
+ hash = ebitmap_hash(&r->level[1].cat, hash);
+ return hash;
+}
+
+#endif /* _SS_MLS_H */
+