*
* Copyright (C) 2005 Red Hat, Inc., James Morris <jmorris@redhat.com>
* Copyright (C) 2006 Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
+ * Copyright (C) 2006 IBM Corporation, Timothy R. Chavez <tinytim@us.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2,
struct selinux_audit_rule;
struct audit_context;
+struct kern_ipc_perm;
#ifdef CONFIG_SECURITY_SELINUX
/**
- * selinux_audit_rule_init - alloc/init an selinux audit rule structure.
- * @field: the field this rule refers to
- * @op: the operater the rule uses
- * @rulestr: the text "target" of the rule
- * @rule: pointer to the new rule structure returned via this
+ * selinux_string_to_sid - map a security context string to a security ID
+ * @str: the security context string to be mapped
+ * @sid: ID value returned via this.
*
- * Returns 0 if successful, -errno if not. On success, the rule structure
- * will be allocated internally. The caller must free this structure with
- * selinux_audit_rule_free() after use.
+ * Returns 0 if successful, with the SID stored in sid. A value
+ * of zero for sid indicates no SID could be determined (but no error
+ * occurred).
*/
-int selinux_audit_rule_init(u32 field, u32 op, char *rulestr,
- struct selinux_audit_rule **rule);
+int selinux_string_to_sid(char *str, u32 *sid);
/**
- * selinux_audit_rule_free - free an selinux audit rule structure.
- * @rule: pointer to the audit rule to be freed
+ * selinux_secmark_relabel_packet_permission - secmark permission check
+ * @sid: SECMARK ID value to be applied to network packet
*
- * This will free all memory associated with the given rule.
- * If @rule is NULL, no operation is performed.
+ * Returns 0 if the current task is allowed to set the SECMARK label of
+ * packets with the supplied security ID. Note that it is implicit that
+ * the packet is always being relabeled from the default unlabeled value,
+ * and that the access control decision is made in the AVC.
*/
-void selinux_audit_rule_free(struct selinux_audit_rule *rule);
+int selinux_secmark_relabel_packet_permission(u32 sid);
/**
- * selinux_audit_rule_match - determine if a context ID matches a rule.
- * @ctxid: the context ID to check
- * @field: the field this rule refers to
- * @op: the operater the rule uses
- * @rule: pointer to the audit rule to check against
- * @actx: the audit context (can be NULL) associated with the check
+ * selinux_secmark_refcount_inc - increments the secmark use counter
*
- * Returns 1 if the context id matches the rule, 0 if it does not, and
- * -errno on failure.
+ * SELinux keeps track of the current SECMARK targets in use so it knows
+ * when to apply SECMARK label access checks to network packets. This
+ * function incements this reference count to indicate that a new SECMARK
+ * target has been configured.
*/
-int selinux_audit_rule_match(u32 ctxid, u32 field, u32 op,
- struct selinux_audit_rule *rule,
- struct audit_context *actx);
+void selinux_secmark_refcount_inc(void);
/**
- * selinux_audit_set_callback - set the callback for policy reloads.
- * @callback: the function to call when the policy is reloaded
+ * selinux_secmark_refcount_dec - decrements the secmark use counter
*
- * This sets the function callback function that will update the rules
- * upon policy reloads. This callback should rebuild all existing rules
- * using selinux_audit_rule_init().
+ * SELinux keeps track of the current SECMARK targets in use so it knows
+ * when to apply SECMARK label access checks to network packets. This
+ * function decements this reference count to indicate that one of the
+ * existing SECMARK targets has been removed/flushed.
*/
-void selinux_audit_set_callback(int (*callback)(void));
+void selinux_secmark_refcount_dec(void);
/**
- * selinux_task_ctxid - determine a context ID for a process.
- * @tsk: the task object
- * @ctxid: ID value returned via this
- *
- * On return, ctxid will contain an ID for the context. This value
- * should only be used opaquely.
+ * selinux_is_enabled - is SELinux enabled?
*/
-void selinux_task_ctxid(struct task_struct *tsk, u32 *ctxid);
-
+bool selinux_is_enabled(void);
#else
-static inline int selinux_audit_rule_init(u32 field, u32 op,
- char *rulestr,
- struct selinux_audit_rule **rule)
+static inline int selinux_string_to_sid(const char *str, u32 *sid)
{
- return -ENOTSUPP;
+ *sid = 0;
+ return 0;
}
-static inline void selinux_audit_rule_free(struct selinux_audit_rule *rule)
+static inline int selinux_secmark_relabel_packet_permission(u32 sid)
{
- return;
+ return 0;
}
-static inline int selinux_audit_rule_match(u32 ctxid, u32 field, u32 op,
- struct selinux_audit_rule *rule,
- struct audit_context *actx)
+static inline void selinux_secmark_refcount_inc(void)
{
- return 0;
+ return;
}
-static inline void selinux_audit_set_callback(int (*callback)(void))
+static inline void selinux_secmark_refcount_dec(void)
{
return;
}
-static inline void selinux_task_ctxid(struct task_struct *tsk, u32 *ctxid)
+static inline bool selinux_is_enabled(void)
{
- *ctxid = 0;
+ return false;
}
-
#endif /* CONFIG_SECURITY_SELINUX */
#endif /* _LINUX_SELINUX_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff