mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
c749b29fae
Add and export new functions to the in-kernel SELinux API in support of the new secmark-based packet controls. Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
96 lines
2.1 KiB
C
96 lines
2.1 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 "security.h"
|
|
#include "objsec.h"
|
|
|
|
void selinux_task_ctxid(struct task_struct *tsk, u32 *ctxid)
|
|
{
|
|
struct task_security_struct *tsec = tsk->security;
|
|
if (selinux_enabled)
|
|
*ctxid = tsec->sid;
|
|
else
|
|
*ctxid = 0;
|
|
}
|
|
|
|
int selinux_ctxid_to_string(u32 ctxid, char **ctx, u32 *ctxlen)
|
|
{
|
|
if (selinux_enabled)
|
|
return security_sid_to_context(ctxid, ctx, ctxlen);
|
|
else {
|
|
*ctx = NULL;
|
|
*ctxlen = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void selinux_get_inode_sid(const struct inode *inode, u32 *sid)
|
|
{
|
|
if (selinux_enabled) {
|
|
struct inode_security_struct *isec = inode->i_security;
|
|
*sid = isec->sid;
|
|
return;
|
|
}
|
|
*sid = 0;
|
|
}
|
|
|
|
void selinux_get_ipc_sid(const struct kern_ipc_perm *ipcp, u32 *sid)
|
|
{
|
|
if (selinux_enabled) {
|
|
struct ipc_security_struct *isec = ipcp->security;
|
|
*sid = isec->sid;
|
|
return;
|
|
}
|
|
*sid = 0;
|
|
}
|
|
|
|
void selinux_get_task_sid(struct task_struct *tsk, u32 *sid)
|
|
{
|
|
if (selinux_enabled) {
|
|
struct task_security_struct *tsec = tsk->security;
|
|
*sid = tsec->sid;
|
|
return;
|
|
}
|
|
*sid = 0;
|
|
}
|
|
|
|
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_relabel_packet_permission(u32 sid)
|
|
{
|
|
if (selinux_enabled) {
|
|
struct task_security_struct *tsec = current->security;
|
|
|
|
return avc_has_perm(tsec->sid, sid, SECCLASS_PACKET,
|
|
PACKET__RELABELTO, NULL);
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(selinux_relabel_packet_permission);
|