summaryrefslogtreecommitdiffstats
path: root/security/selinux/include/avc.h
diff options
context:
space:
mode:
Diffstat (limited to 'security/selinux/include/avc.h')
-rw-r--r--security/selinux/include/avc.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/security/selinux/include/avc.h b/security/selinux/include/avc.h
new file mode 100644
index 000000000000..960ef18ddc41
--- /dev/null
+++ b/security/selinux/include/avc.h
@@ -0,0 +1,137 @@
+/*
+ * Access vector cache interface for object managers.
+ *
+ * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
+ */
+#ifndef _SELINUX_AVC_H_
+#define _SELINUX_AVC_H_
+
+#include <linux/stddef.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/kdev_t.h>
+#include <linux/spinlock.h>
+#include <linux/init.h>
+#include <linux/in6.h>
+#include <asm/system.h>
+#include "flask.h"
+#include "av_permissions.h"
+#include "security.h"
+
+#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
+extern int selinux_enforcing;
+#else
+#define selinux_enforcing 1
+#endif
+
+/*
+ * An entry in the AVC.
+ */
+struct avc_entry;
+
+struct task_struct;
+struct vfsmount;
+struct dentry;
+struct inode;
+struct sock;
+struct sk_buff;
+
+/* Auxiliary data to use in generating the audit record. */
+struct avc_audit_data {
+ char type;
+#define AVC_AUDIT_DATA_FS 1
+#define AVC_AUDIT_DATA_NET 2
+#define AVC_AUDIT_DATA_CAP 3
+#define AVC_AUDIT_DATA_IPC 4
+ struct task_struct *tsk;
+ union {
+ struct {
+ struct vfsmount *mnt;
+ struct dentry *dentry;
+ struct inode *inode;
+ } fs;
+ struct {
+ char *netif;
+ struct sock *sk;
+ u16 family;
+ u16 dport;
+ u16 sport;
+ union {
+ struct {
+ u32 daddr;
+ u32 saddr;
+ } v4;
+ struct {
+ struct in6_addr daddr;
+ struct in6_addr saddr;
+ } v6;
+ } fam;
+ } net;
+ int cap;
+ int ipc_id;
+ } u;
+};
+
+#define v4info fam.v4
+#define v6info fam.v6
+
+/* Initialize an AVC audit data structure. */
+#define AVC_AUDIT_DATA_INIT(_d,_t) \
+ { memset((_d), 0, sizeof(struct avc_audit_data)); (_d)->type = AVC_AUDIT_DATA_##_t; }
+
+/*
+ * AVC statistics
+ */
+struct avc_cache_stats
+{
+ unsigned int lookups;
+ unsigned int hits;
+ unsigned int misses;
+ unsigned int allocations;
+ unsigned int reclaims;
+ unsigned int frees;
+};
+
+/*
+ * AVC operations
+ */
+
+void __init avc_init(void);
+
+void avc_audit(u32 ssid, u32 tsid,
+ u16 tclass, u32 requested,
+ struct av_decision *avd, int result, struct avc_audit_data *auditdata);
+
+int avc_has_perm_noaudit(u32 ssid, u32 tsid,
+ u16 tclass, u32 requested,
+ struct av_decision *avd);
+
+int avc_has_perm(u32 ssid, u32 tsid,
+ u16 tclass, u32 requested,
+ struct avc_audit_data *auditdata);
+
+#define AVC_CALLBACK_GRANT 1
+#define AVC_CALLBACK_TRY_REVOKE 2
+#define AVC_CALLBACK_REVOKE 4
+#define AVC_CALLBACK_RESET 8
+#define AVC_CALLBACK_AUDITALLOW_ENABLE 16
+#define AVC_CALLBACK_AUDITALLOW_DISABLE 32
+#define AVC_CALLBACK_AUDITDENY_ENABLE 64
+#define AVC_CALLBACK_AUDITDENY_DISABLE 128
+
+int avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
+ u16 tclass, u32 perms,
+ u32 *out_retained),
+ u32 events, u32 ssid, u32 tsid,
+ u16 tclass, u32 perms);
+
+/* Exported to selinuxfs */
+int avc_get_hash_stats(char *page);
+extern unsigned int avc_cache_threshold;
+
+#ifdef CONFIG_SECURITY_SELINUX_AVC_STATS
+DECLARE_PER_CPU(struct avc_cache_stats, avc_cache_stats);
+#endif
+
+#endif /* _SELINUX_AVC_H_ */
+