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Linux/security/apparmor/include/net.h

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  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                           OP);                                            \
 63         NAME.u.net = &(NAME ## _net);                                     \
 64         aad(&NAME)->net.type = (T);                                       \
 65         aad(&NAME)->net.protocol = (P)
 66 
 67 #define DEFINE_AUDIT_SK(NAME, OP, SK)                                   \
 68         DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type,  \
 69                          (SK)->sk_protocol)
 70 
 71 
 72 #define af_select(FAMILY, FN, DEF_FN)           \
 73 ({                                              \
 74         int __e;                                \
 75         switch ((FAMILY)) {                     \
 76         default:                                \
 77                 __e = DEF_FN;                   \
 78         }                                       \
 79         __e;                                    \
 80 })
 81 
 82 struct aa_secmark {
 83         u8 audit;
 84         u8 deny;
 85         u32 secid;
 86         char *label;
 87 };
 88 
 89 extern struct aa_sfs_entry aa_sfs_entry_network[];
 90 
 91 void audit_net_cb(struct audit_buffer *ab, void *va);
 92 int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
 93                        u32 request, u16 family, int type);
 94 int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
 95                int type, int protocol);
 96 static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
 97                                         struct common_audit_data *sa,
 98                                         u32 request,
 99                                         struct sock *sk)
100 {
101         return aa_profile_af_perm(profile, sa, request, sk->sk_family,
102                                   sk->sk_type);
103 }
104 int aa_sk_perm(const char *op, u32 request, struct sock *sk);
105 
106 int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
107                       struct socket *sock);
108 
109 int apparmor_secmark_check(struct aa_label *label, char *op, u32 request,
110                            u32 secid, struct sock *sk);
111 
112 #endif /* __AA_NET_H */
113 

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