mirror of https://gitee.com/openkylin/linux.git
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/*
|
|
* AppArmor security module
|
|
*
|
|
* This file contains AppArmor basic global and lib definitions
|
|
*
|
|
* Copyright (C) 1998-2008 Novell/SUSE
|
|
* Copyright 2009-2010 Canonical Ltd.
|
|
*
|
|
* 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, version 2 of the
|
|
* License.
|
|
*/
|
|
|
|
#ifndef __APPARMOR_H
|
|
#define __APPARMOR_H
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/fs.h>
|
|
|
|
#include "match.h"
|
|
|
|
/*
|
|
* Class of mediation types in the AppArmor policy db
|
|
*/
|
|
#define AA_CLASS_ENTRY 0
|
|
#define AA_CLASS_UNKNOWN 1
|
|
#define AA_CLASS_FILE 2
|
|
#define AA_CLASS_CAP 3
|
|
#define AA_CLASS_NET 4
|
|
#define AA_CLASS_RLIMITS 5
|
|
#define AA_CLASS_DOMAIN 6
|
|
|
|
#define AA_CLASS_LAST AA_CLASS_DOMAIN
|
|
|
|
/* Control parameters settable through module/boot flags */
|
|
extern enum audit_mode aa_g_audit;
|
|
extern bool aa_g_audit_header;
|
|
extern bool aa_g_debug;
|
|
extern bool aa_g_lock_policy;
|
|
extern bool aa_g_logsyscall;
|
|
extern bool aa_g_paranoid_load;
|
|
extern unsigned int aa_g_path_max;
|
|
|
|
/*
|
|
* DEBUG remains global (no per profile flag) since it is mostly used in sysctl
|
|
* which is not related to profile accesses.
|
|
*/
|
|
|
|
#define AA_DEBUG(fmt, args...) \
|
|
do { \
|
|
if (aa_g_debug && printk_ratelimit()) \
|
|
printk(KERN_DEBUG "AppArmor: " fmt, ##args); \
|
|
} while (0)
|
|
|
|
#define AA_ERROR(fmt, args...) \
|
|
do { \
|
|
if (printk_ratelimit()) \
|
|
printk(KERN_ERR "AppArmor: " fmt, ##args); \
|
|
} while (0)
|
|
|
|
/* Flag indicating whether initialization completed */
|
|
extern int apparmor_initialized __initdata;
|
|
|
|
/* fn's in lib */
|
|
char *aa_split_fqname(char *args, char **ns_name);
|
|
void aa_info_message(const char *str);
|
|
void *__aa_kvmalloc(size_t size, gfp_t flags);
|
|
|
|
static inline void *kvmalloc(size_t size)
|
|
{
|
|
return __aa_kvmalloc(size, 0);
|
|
}
|
|
|
|
static inline void *kvzalloc(size_t size)
|
|
{
|
|
return __aa_kvmalloc(size, __GFP_ZERO);
|
|
}
|
|
|
|
/* returns 0 if kref not incremented */
|
|
static inline int kref_get_not0(struct kref *kref)
|
|
{
|
|
return atomic_inc_not_zero(&kref->refcount);
|
|
}
|
|
|
|
/**
|
|
* aa_strneq - compare null terminated @str to a non null terminated substring
|
|
* @str: a null terminated string
|
|
* @sub: a substring, not necessarily null terminated
|
|
* @len: length of @sub to compare
|
|
*
|
|
* The @str string must be full consumed for this to be considered a match
|
|
*/
|
|
static inline bool aa_strneq(const char *str, const char *sub, int len)
|
|
{
|
|
return !strncmp(str, sub, len) && !str[len];
|
|
}
|
|
|
|
/**
|
|
* aa_dfa_null_transition - step to next state after null character
|
|
* @dfa: the dfa to match against
|
|
* @start: the state of the dfa to start matching in
|
|
*
|
|
* aa_dfa_null_transition transitions to the next state after a null
|
|
* character which is not used in standard matching and is only
|
|
* used to separate pairs.
|
|
*/
|
|
static inline unsigned int aa_dfa_null_transition(struct aa_dfa *dfa,
|
|
unsigned int start)
|
|
{
|
|
/* the null transition only needs the string's null terminator byte */
|
|
return aa_dfa_next(dfa, start, 0);
|
|
}
|
|
|
|
static inline bool mediated_filesystem(struct dentry *dentry)
|
|
{
|
|
return !(dentry->d_sb->s_flags & MS_NOUSER);
|
|
}
|
|
|
|
#endif /* __APPARMOR_H */
|