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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/security/selinux/ss/conditional.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/security/selinux/ss/conditional.h')
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1 files changed, 80 insertions, 0 deletions
diff --git a/kernel/security/selinux/ss/conditional.h b/kernel/security/selinux/ss/conditional.h
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+++ b/kernel/security/selinux/ss/conditional.h
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+/* Authors: Karl MacMillan <kmacmillan@tresys.com>
+ * Frank Mayer <mayerf@tresys.com>
+ *
+ * Copyright (C) 2003 - 2004 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 _CONDITIONAL_H_
+#define _CONDITIONAL_H_
+
+#include "avtab.h"
+#include "symtab.h"
+#include "policydb.h"
+#include "../include/conditional.h"
+
+#define COND_EXPR_MAXDEPTH 10
+
+/*
+ * A conditional expression is a list of operators and operands
+ * in reverse polish notation.
+ */
+struct cond_expr {
+#define COND_BOOL 1 /* plain bool */
+#define COND_NOT 2 /* !bool */
+#define COND_OR 3 /* bool || bool */
+#define COND_AND 4 /* bool && bool */
+#define COND_XOR 5 /* bool ^ bool */
+#define COND_EQ 6 /* bool == bool */
+#define COND_NEQ 7 /* bool != bool */
+#define COND_LAST COND_NEQ
+ __u32 expr_type;
+ __u32 bool;
+ struct cond_expr *next;
+};
+
+/*
+ * Each cond_node contains a list of rules to be enabled/disabled
+ * depending on the current value of the conditional expression. This
+ * struct is for that list.
+ */
+struct cond_av_list {
+ struct avtab_node *node;
+ struct cond_av_list *next;
+};
+
+/*
+ * A cond node represents a conditional block in a policy. It
+ * contains a conditional expression, the current state of the expression,
+ * two lists of rules to enable/disable depending on the value of the
+ * expression (the true list corresponds to if and the false list corresponds
+ * to else)..
+ */
+struct cond_node {
+ int cur_state;
+ struct cond_expr *expr;
+ struct cond_av_list *true_list;
+ struct cond_av_list *false_list;
+ struct cond_node *next;
+};
+
+int cond_policydb_init(struct policydb *p);
+void cond_policydb_destroy(struct policydb *p);
+
+int cond_init_bool_indexes(struct policydb *p);
+int cond_destroy_bool(void *key, void *datum, void *p);
+
+int cond_index_bool(void *key, void *datum, void *datap);
+
+int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp);
+int cond_read_list(struct policydb *p, void *fp);
+int cond_write_bool(void *key, void *datum, void *ptr);
+int cond_write_list(struct policydb *p, struct cond_node *list, void *fp);
+
+void cond_compute_av(struct avtab *ctab, struct avtab_key *key, struct av_decision *avd);
+
+int evaluate_cond_node(struct policydb *p, struct cond_node *node);
+
+#endif /* _CONDITIONAL_H_ */