mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 21:21:47 +00:00
ed868a5698
__validate_process_creds should check if selinux is actually enabled before running tests on the selinux portion of the credentials struct. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
|
|
* 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);
|