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TOMOYO Linux Cross Reference
Linux/security/apparmor/include/net.h

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  1 /*
  2  * AppArmor security module
  3  *
  4  * This file contains AppArmor network mediation definitions.
  5  *
  6  * Copyright (C) 1998-2008 Novell/SUSE
  7  * Copyright 2009-2017 Canonical Ltd.
  8  *
  9  * This program is free software; you can redistribute it and/or
 10  * modify it under the terms of the GNU General Public License as
 11  * published by the Free Software Foundation, version 2 of the
 12  * License.
 13  */
 14 
 15 #ifndef __AA_NET_H
 16 #define __AA_NET_H
 17 
 18 #include <net/sock.h>
 19 #include <linux/path.h>
 20 
 21 #include "apparmorfs.h"
 22 #include "label.h"
 23 #include "perms.h"
 24 #include "policy.h"
 25 
 26 #define AA_MAY_SEND             AA_MAY_WRITE
 27 #define AA_MAY_RECEIVE          AA_MAY_READ
 28 
 29 #define AA_MAY_SHUTDOWN         AA_MAY_DELETE
 30 
 31 #define AA_MAY_CONNECT          AA_MAY_OPEN
 32 #define AA_MAY_ACCEPT           0x00100000
 33 
 34 #define AA_MAY_BIND             0x00200000
 35 #define AA_MAY_LISTEN           0x00400000
 36 
 37 #define AA_MAY_SETOPT           0x01000000
 38 #define AA_MAY_GETOPT           0x02000000
 39 
 40 #define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE |    \
 41                         AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN |   \
 42                         AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \
 43                         AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT)
 44 
 45 #define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE |    \
 46                       AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\
 47                       AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD |  \
 48                       AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK |       \
 49                       AA_MAY_MPROT)
 50 
 51 #define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT |  \
 52                        AA_MAY_ACCEPT)
 53 struct aa_sk_ctx {
 54         struct aa_label *label;
 55         struct aa_label *peer;
 56 };
 57 
 58 #define SK_CTX(X) ((X)->sk_security)
 59 #define SOCK_ctx(X) SOCK_INODE(X)->i_security
 60 #define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P)                           \
 61         struct lsm_network_audit NAME ## _net = { .sk = (SK),             \
 62                                                   .family = (F)};         \
 63         DEFINE_AUDIT_DATA(NAME,                                           \
 64                           ((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \
 65                                                      LSM_AUDIT_DATA_NONE, \
 66                           OP);                                            \
 67         NAME.u.net = &(NAME ## _net);                                     \
 68         aad(&NAME)->net.type = (T);                                       \
 69         aad(&NAME)->net.protocol = (P)
 70 
 71 #define DEFINE_AUDIT_SK(NAME, OP, SK)                                   \
 72         DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type,  \
 73                          (SK)->sk_protocol)
 74 
 75 
 76 #define af_select(FAMILY, FN, DEF_FN)           \
 77 ({                                              \
 78         int __e;                                \
 79         switch ((FAMILY)) {                     \
 80         default:                                \
 81                 __e = DEF_FN;                   \
 82         }                                       \
 83         __e;                                    \
 84 })
 85 
 86 extern struct aa_sfs_entry aa_sfs_entry_network[];
 87 
 88 void audit_net_cb(struct audit_buffer *ab, void *va);
 89 int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
 90                        u32 request, u16 family, int type);
 91 int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
 92                int type, int protocol);
 93 static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
 94                                         struct common_audit_data *sa,
 95                                         u32 request,
 96                                         struct sock *sk)
 97 {
 98         return aa_profile_af_perm(profile, sa, request, sk->sk_family,
 99                                   sk->sk_type);
100 }
101 int aa_sk_perm(const char *op, u32 request, struct sock *sk);
102 
103 int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
104                       struct socket *sock);
105 
106 #endif /* __AA_NET_H */
107 

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