1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*
* 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 inode *inode)
{
return !(inode->i_sb->s_flags & MS_NOUSER);
}
#endif /* __APPARMOR_H */
|
