LXR linux/security/apparmor/include/net.h

   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)
  53struct 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
  86struct aa_secmark {
  87        u8 audit;
  88        u8 deny;
  89        u32 secid;
  90        char *label;
  91};
  92
  93extern struct aa_sfs_entry aa_sfs_entry_network[];
  94
  95void audit_net_cb(struct audit_buffer *ab, void *va);
  96int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
  97                       u32 request, u16 family, int type);
  98int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
  99               int type, int protocol);
 100static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
 101                                        struct common_audit_data *sa,
 102                                        u32 request,
 103                                        struct sock *sk)
 104{
 105        return aa_profile_af_perm(profile, sa, request, sk->sk_family,
 106                                  sk->sk_type);
 107}
 108int aa_sk_perm(const char *op, u32 request, struct sock *sk);
 109
 110int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
 111                      struct socket *sock);
 112
 113int apparmor_secmark_check(struct aa_label *label, char *op, u32 request,
 114                           u32 secid, struct sock *sk);
 115
 116#endif /* __AA_NET_H */
 117