/* * SELinux services exported to the rest of the kernel. * * Author: James Morris <jmorris@redhat.com> * * 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, * as published by the Free Software Foundation. */ #ifndef _LINUX_SELINUX_H #define _LINUX_SELINUX_H struct selinux_audit_rule; struct audit_context; struct kern_ipc_perm; #ifdef CONFIG_SECURITY_SELINUX /** * 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, with the SID stored in sid. A value * of zero for sid indicates no SID could be determined (but no error * occurred). */ int selinux_string_to_sid(char *str, u32 *sid); /** * selinux_secmark_relabel_packet_permission - secmark permission check * @sid: SECMARK ID value to be applied to network packet * * 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. */ int selinux_secmark_relabel_packet_permission(u32 sid); /** * selinux_secmark_refcount_inc - increments the secmark use counter * * 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. */ void selinux_secmark_refcount_inc(void); /** * selinux_secmark_refcount_dec - decrements the secmark use counter * * 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_secmark_refcount_dec(void); #else static inline int selinux_string_to_sid(const char *str, u32 *sid) { *sid = 0; return 0; } static inline int selinux_secmark_relabel_packet_permission(u32 sid) { return 0; } static inline void selinux_secmark_refcount_inc(void) { return; } static inline void selinux_secmark_refcount_dec(void) { return; } #endif /* CONFIG_SECURITY_SELINUX */ #endif /* _LINUX_SELINUX_H */