127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AppArmor security module
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*
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* This file contains AppArmor network mediation definitions.
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*
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* Copyright (C) 1998-2008 Novell/SUSE
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* Copyright 2009-2017 Canonical Ltd.
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*/
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#ifndef __AA_NET_H
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#define __AA_NET_H
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#include <net/sock.h>
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#include <linux/path.h>
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#include "apparmorfs.h"
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#include "label.h"
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#include "perms.h"
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#include "policy.h"
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#define AA_MAY_SEND AA_MAY_WRITE
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#define AA_MAY_RECEIVE AA_MAY_READ
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#define AA_MAY_SHUTDOWN AA_MAY_DELETE
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#define AA_MAY_CONNECT AA_MAY_OPEN
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#define AA_MAY_ACCEPT 0x00100000
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#define AA_MAY_BIND 0x00200000
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#define AA_MAY_LISTEN 0x00400000
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#define AA_MAY_SETOPT 0x01000000
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#define AA_MAY_GETOPT 0x02000000
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#define NET_PERMS_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
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AA_MAY_SHUTDOWN | AA_MAY_BIND | AA_MAY_LISTEN | \
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AA_MAY_CONNECT | AA_MAY_ACCEPT | AA_MAY_SETATTR | \
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AA_MAY_GETATTR | AA_MAY_SETOPT | AA_MAY_GETOPT)
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#define NET_FS_PERMS (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CREATE | \
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AA_MAY_SHUTDOWN | AA_MAY_CONNECT | AA_MAY_RENAME |\
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AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_CHMOD | \
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AA_MAY_CHOWN | AA_MAY_CHGRP | AA_MAY_LOCK | \
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AA_MAY_MPROT)
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#define NET_PEER_MASK (AA_MAY_SEND | AA_MAY_RECEIVE | AA_MAY_CONNECT | \
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AA_MAY_ACCEPT)
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struct aa_sk_ctx {
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struct aa_label *label;
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struct aa_label *peer;
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struct path path;
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};
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#define SK_CTX(X) ((X)->sk_security)
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#define SOCK_ctx(X) SOCK_INODE(X)->i_security
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#define DEFINE_AUDIT_NET(NAME, OP, SK, F, T, P) \
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struct lsm_network_audit NAME ## _net = { .sk = (SK), \
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.family = (F)}; \
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DEFINE_AUDIT_DATA(NAME, \
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((SK) && (F) != AF_UNIX) ? LSM_AUDIT_DATA_NET : \
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LSM_AUDIT_DATA_NONE, \
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OP); \
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NAME.u.net = &(NAME ## _net); \
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aad(&NAME)->net.type = (T); \
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aad(&NAME)->net.protocol = (P)
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#define DEFINE_AUDIT_SK(NAME, OP, SK) \
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DEFINE_AUDIT_NET(NAME, OP, SK, (SK)->sk_family, (SK)->sk_type, \
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(SK)->sk_protocol)
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/* struct aa_net - network confinement data
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* @allow: basic network families permissions
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* @audit: which network permissions to force audit
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* @quiet: which network permissions to quiet rejects
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*/
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struct aa_net_compat {
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u16 allow[AF_MAX];
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u16 audit[AF_MAX];
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u16 quiet[AF_MAX];
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};
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#define af_select(FAMILY, FN, DEF_FN) \
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({ \
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int __e; \
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switch ((FAMILY)) { \
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case AF_UNIX: \
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__e = aa_unix_ ## FN; \
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break; \
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default: \
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__e = DEF_FN; \
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} \
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__e; \
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})
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struct aa_secmark {
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u8 audit;
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u8 deny;
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u32 secid;
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char *label;
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};
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extern struct aa_sfs_entry aa_sfs_entry_network[];
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extern struct aa_sfs_entry aa_sfs_entry_network_compat[];
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void audit_net_cb(struct audit_buffer *ab, void *va);
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int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
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u32 request, u16 family, int type);
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int aa_af_perm(struct aa_label *label, const char *op, u32 request, u16 family,
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int type, int protocol);
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static inline int aa_profile_af_sk_perm(struct aa_profile *profile,
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struct common_audit_data *sa,
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u32 request,
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struct sock *sk)
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{
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return aa_profile_af_perm(profile, sa, request, sk->sk_family,
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sk->sk_type);
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}
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int aa_sk_perm(const char *op, u32 request, struct sock *sk);
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int aa_sock_file_perm(struct aa_label *label, const char *op, u32 request,
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struct socket *sock);
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int apparmor_secmark_check(struct aa_label *label, char *op, u32 request,
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u32 secid, const struct sock *sk);
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#endif /* __AA_NET_H */
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