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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/security/apparmor/include/af_unix.h
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/* 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 af_unix fine grained mediation

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 *

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 * Copyright 2023 Canonical Ltd.

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 *

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 * This program is free software; you can redistribute it and/or

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 * modify it under the terms of the GNU General Public License as

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 * published by the Free Software Foundation, version 2 of the

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 * License.

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 */

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#ifndef __AA_AF_UNIX_H

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#include <net/af_unix.h>

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#include "label.h"

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#define unix_addr(A) ((struct sockaddr_un *)(A))

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#define unix_addr_len(L) ((L) - sizeof(sa_family_t))

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#define unix_peer(sk) (unix_sk(sk)->peer)

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#define is_unix_addr_abstract_name(B) ((B)[0] == 0)

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#define is_unix_addr_anon(A, L) ((A) && unix_addr_len(L) <= 0)

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#define is_unix_addr_fs(A, L) (!is_unix_addr_anon(A, L) && \

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			    !is_unix_addr_abstract_name(unix_addr(A)->sun_path))

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#define is_unix_anonymous(U) (!unix_sk(U)->addr)

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#define is_unix_fs(U) (!is_unix_anonymous(U) &&			\

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		       unix_sk(U)->addr->name->sun_path[0])

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#define is_unix_connected(S) ((S)->state == SS_CONNECTED)

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struct sockaddr_un *aa_sunaddr(const struct unix_sock *u, int *addrlen);

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int aa_unix_peer_perm(const struct cred *subj_cred,

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		      struct aa_label *label, const char *op, u32 request,

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		      struct sock *sk, struct sock *peer_sk,

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		      struct aa_label *peer_label);

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int aa_unix_sock_perm(const char *op, u32 request, struct socket *sock);

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int aa_unix_create_perm(struct aa_label *label, int family, int type,

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			int protocol);

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int aa_unix_bind_perm(struct socket *sock, struct sockaddr *address,

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		      int addrlen);

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int aa_unix_connect_perm(struct socket *sock, struct sockaddr *address,

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			 int addrlen);

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int aa_unix_listen_perm(struct socket *sock, int backlog);

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int aa_unix_accept_perm(struct socket *sock, struct socket *newsock);

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int aa_unix_msg_perm(const char *op, u32 request, struct socket *sock,

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		     struct msghdr *msg, int size);

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int aa_unix_opt_perm(const char *op, u32 request, struct socket *sock, int level,

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		     int optname);

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int aa_unix_file_perm(const struct cred *subj_cred, struct aa_label *label,

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		      const char *op, u32 request, struct file *file);

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#endif /* __AA_AF_UNIX_H */

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