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, const struct sock *sk); 111 112 #endif /* __AA_NET_H */ 113