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/*
* 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.
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/selinux.h>
#include <linux/fs.h>
#include <linux/ipc.h>
#include <asm/atomic.h>
#include "security.h"
#include "objsec.h"
/* SECMARK reference count */
extern atomic_t selinux_secmark_refcount;
int selinux_string_to_sid(char *str, u32 *sid)
{
if (selinux_enabled)
return security_context_to_sid(str, strlen(str), sid);
else {
*sid = 0;
return 0;
}
}
EXPORT_SYMBOL_GPL(selinux_string_to_sid);
int selinux_secmark_relabel_packet_permission(u32 sid)
{
if (selinux_enabled) {
const struct task_security_struct *__tsec;
u32 tsid;
__tsec = current_security();
tsid = __tsec->sid;
return avc_has_perm(tsid, sid, SECCLASS_PACKET,
PACKET__RELABELTO, NULL);
}
return 0;
}
EXPORT_SYMBOL_GPL(selinux_secmark_relabel_packet_permission);
void selinux_secmark_refcount_inc(void)
{
atomic_inc(&selinux_secmark_refcount);
}
EXPORT_SYMBOL_GPL(selinux_secmark_refcount_inc);
void selinux_secmark_refcount_dec(void)
{
atomic_dec(&selinux_secmark_refcount);
}
EXPORT_SYMBOL_GPL(selinux_secmark_refcount_dec);
bool selinux_is_enabled(void)
{
return selinux_enabled;
}
EXPORT_SYMBOL_GPL(selinux_is_enabled);
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