Merge tag 'for-6.2-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
[platform/kernel/linux-rpi.git] / security / apparmor / include / net.h
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * AppArmor security module
4  *
5  * This file contains AppArmor network mediation definitions.
6  *
7  * Copyright (C) 1998-2008 Novell/SUSE
8  * Copyright 2009-2017 Canonical Ltd.
9  */
10
11 #ifndef __AA_NET_H
12 #define __AA_NET_H
13
14 #include <net/sock.h>
15 #include <linux/path.h>
16
17 #include "apparmorfs.h"
18 #include "label.h"
19 #include "perms.h"
20 #include "policy.h"
21
22 #define AA_MAY_SEND             AA_MAY_WRITE
23 #define AA_MAY_RECEIVE          AA_MAY_READ
24
25 #define AA_MAY_SHUTDOWN         AA_MAY_DELETE
26
27 #define AA_MAY_CONNECT          AA_MAY_OPEN
28 #define AA_MAY_ACCEPT           0x00100000
29
30 #define AA_MAY_BIND             0x00200000
31 #define AA_MAY_LISTEN           0x00400000
32
33 #define AA_MAY_SETOPT           0x01000000
34 #define AA_MAY_GETOPT           0x02000000
35
36 #define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE |    \
37                         AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN |   \
38                         AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \
39                         AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT)
40
41 #define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE |    \
42                       AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\
43                       AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD |  \
44                       AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK |       \
45                       AA_MAY_MPROT)
46
47 #define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT |  \
48                        AA_MAY_ACCEPT)
49 struct aa_sk_ctx {
50         struct aa_label *label;
51         struct aa_label *peer;
52 };
53
54 #define SK_CTX(X) ((X)->sk_security)
55 #define SOCK_ctx(X) SOCK_INODE(X)->i_security
56 #define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P)                           \
57         struct lsm_network_audit NAME ## _net = { .sk = (SK),             \
58                                                   .family = (F)};         \
59         DEFINE_AUDIT_DATA(NAME,                                           \
60                           ((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \
61                                                      LSM_AUDIT_DATA_NONE, \
62                                                      AA_CLASS_NET,        \
63                           OP);                                            \
64         NAME.u.net = &(NAME ## _net);                                     \
65         aad(&NAME)->net.type = (T);                                       \
66         aad(&NAME)->net.protocol = (P)
67
68 #define DEFINE_AUDIT_SK(NAME, OP, SK)                                   \
69         DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type,  \
70                          (SK)->sk_protocol)
71
72
73 #define af_select(FAMILY, FN, DEF_FN)           \
74 ({                                              \
75         int __e;                                \
76         switch ((FAMILY)) {                     \
77         default:                                \
78                 __e = DEF_FN;                   \
79         }                                       \
80         __e;                                    \
81 })
82
83 struct aa_secmark {
84         u8 audit;
85         u8 deny;
86         u32 secid;
87         char *label;
88 };
89
90 extern struct aa_sfs_entry aa_sfs_entry_network[];
91
92 void audit_net_cb(struct audit_buffer *ab, void *va);
93 int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
94                        u32 request, u16 family, int type);
95 int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
96                int type, int protocol);
97 static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
98                                         struct common_audit_data *sa,
99                                         u32 request,
100                                         struct sock *sk)
101 {
102         return aa_profile_af_perm(profile, sa, request, sk->sk_family,
103                                   sk->sk_type);
104 }
105 int aa_sk_perm(const char *op, u32 request, struct sock *sk);
106
107 int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
108                       struct socket *sock);
109
110 int apparmor_secmark_check(struct aa_label *label, char *op, u32 request,
111                            u32 secid, const struct sock *sk);
112
113 #endif /* __AA_NET_H */