edcd9270be
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/*
|
|
* CALIPSO - Common Architecture Label IPv6 Security Option
|
|
*
|
|
* This is an implementation of the CALIPSO protocol as specified in
|
|
* RFC 5570.
|
|
*
|
|
* Authors: Paul Moore <paul@paul-moore.com>
|
|
* Huw Davies <huw@codeweavers.com>
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* (c) Copyright Hewlett-Packard Development Company, L.P., 2006
|
|
* (c) Copyright Huw Davies <huw@codeweavers.com>, 2015
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef _CALIPSO_H
|
|
#define _CALIPSO_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/rcupdate.h>
|
|
#include <linux/list.h>
|
|
#include <linux/net.h>
|
|
#include <linux/skbuff.h>
|
|
#include <net/netlabel.h>
|
|
#include <net/request_sock.h>
|
|
#include <linux/refcount.h>
|
|
#include <asm/unaligned.h>
|
|
|
|
/* known doi values */
|
|
#define CALIPSO_DOI_UNKNOWN 0x00000000
|
|
|
|
/* doi mapping types */
|
|
#define CALIPSO_MAP_UNKNOWN 0
|
|
#define CALIPSO_MAP_PASS 2
|
|
|
|
/*
|
|
* CALIPSO DOI definitions
|
|
*/
|
|
|
|
/* DOI definition struct */
|
|
struct calipso_doi {
|
|
u32 doi;
|
|
u32 type;
|
|
|
|
refcount_t refcount;
|
|
struct list_head list;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/*
|
|
* Sysctl Variables
|
|
*/
|
|
extern int calipso_cache_enabled;
|
|
extern int calipso_cache_bucketsize;
|
|
|
|
#ifdef CONFIG_NETLABEL
|
|
int __init calipso_init(void);
|
|
void calipso_exit(void);
|
|
bool calipso_validate(const struct sk_buff *skb, const unsigned char *option);
|
|
#else
|
|
static inline int __init calipso_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void calipso_exit(void)
|
|
{
|
|
}
|
|
static inline bool calipso_validate(const struct sk_buff *skb,
|
|
const unsigned char *option)
|
|
{
|
|
return true;
|
|
}
|
|
#endif /* CONFIG_NETLABEL */
|
|
|
|
#endif /* _CALIPSO_H */
|