mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-09-18 22:14:16 +00:00
bc6e5f6933
The use of the double lock is not necessary and problematic. Instead
pull the bits that need locks into their own sections and grab the
needed references.
Fixes: c05e705812 ("apparmor: add fine grained af_unix mediation")
Signed-off-by: John Johansen <john.johansen@canonical.com>
58 lines
2.2 KiB
C
58 lines
2.2 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 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_label_sk_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);
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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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