From: "Christian Göttsche" <cgzones@googlemail.com>
To: selinux@vger.kernel.org
Cc: Serge Hallyn <serge@hallyn.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Alexander Aring <alex.aring@gmail.com>,
Stefan Schmidt <stefan@datenfreihafen.org>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
David Ahern <dsahern@kernel.org>,
Nikolay Aleksandrov <nikolay@nvidia.com>,
Stefano Garzarella <sgarzare@redhat.com>,
Oliver Hartkopp <socketcan@hartkopp.net>,
Ziyang Xuan <william.xuanziyang@huawei.com>,
Pavel Begunkov <asml.silence@gmail.com>,
Wei Wang <weiwan@google.com>, Yangbo Lu <yangbo.lu@nxp.com>,
Menglong Dong <imagedong@tencent.com>,
Thomas Gleixner <tglx@linutronix.de>,
Richard Palethorpe <rpalethorpe@suse.com>,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
linux-wpan@vger.kernel.org
Subject: [PATCH v3 8/8] net: use new capable_any functionality
Date: Wed, 15 Jun 2022 17:26:22 +0200 [thread overview]
Message-ID: <20220615152623.311223-7-cgzones@googlemail.com> (raw)
In-Reply-To: <20220615152623.311223-1-cgzones@googlemail.com>
Use the new added capable_any function in appropriate cases, where a
task is required to have any of two capabilities.
Reorder CAP_SYS_ADMIN last.
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
---
v3:
- rename to capable_any()
- make use of ns_capable_any
---
net/caif/caif_socket.c | 2 +-
net/core/sock.c | 12 ++++--------
net/ieee802154/socket.c | 6 ++----
net/ipv4/ip_sockglue.c | 3 +--
net/ipv6/ipv6_sockglue.c | 3 +--
net/unix/scm.c | 2 +-
6 files changed, 10 insertions(+), 18 deletions(-)
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 251e666ba9a2..2d3df7658e04 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -1036,7 +1036,7 @@ static int caif_create(struct net *net, struct socket *sock, int protocol,
.usersize = sizeof_field(struct caifsock, conn_req.param)
};
- if (!capable(CAP_SYS_ADMIN) && !capable(CAP_NET_ADMIN))
+ if (!capable_any(CAP_NET_ADMIN, CAP_SYS_ADMIN))
return -EPERM;
/*
* The sock->type specifies the socket type to use.
diff --git a/net/core/sock.c b/net/core/sock.c
index 2ff40dd0a7a6..6b04301982d8 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1163,8 +1163,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
case SO_PRIORITY:
if ((val >= 0 && val <= 6) ||
- ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) ||
- ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN))
+ ns_capable_any(sock_net(sk)->user_ns, CAP_NET_RAW, CAP_NET_ADMIN))
sk->sk_priority = val;
else
ret = -EPERM;
@@ -1309,8 +1308,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
clear_bit(SOCK_PASSSEC, &sock->flags);
break;
case SO_MARK:
- if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) &&
- !ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) {
+ if (!ns_capable_any(sock_net(sk)->user_ns, CAP_NET_RAW, CAP_NET_ADMIN)) {
ret = -EPERM;
break;
}
@@ -1318,8 +1316,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
__sock_set_mark(sk, val);
break;
case SO_RCVMARK:
- if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) &&
- !ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) {
+ if (!ns_capable_any(sock_net(sk)->user_ns, CAP_NET_RAW, CAP_NET_ADMIN)) {
ret = -EPERM;
break;
}
@@ -2680,8 +2677,7 @@ int __sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct cmsghdr *cmsg,
switch (cmsg->cmsg_type) {
case SO_MARK:
- if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) &&
- !ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN))
+ if (!ns_capable_any(sock_net(sk)->user_ns, CAP_NET_RAW, CAP_NET_ADMIN))
return -EPERM;
if (cmsg->cmsg_len != CMSG_LEN(sizeof(u32)))
return -EINVAL;
diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index 718fb77bb372..882483602c27 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -894,8 +894,7 @@ static int dgram_setsockopt(struct sock *sk, int level, int optname,
ro->want_lqi = !!val;
break;
case WPAN_SECURITY:
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
- !ns_capable(net->user_ns, CAP_NET_RAW)) {
+ if (!ns_capable_any(net->user_ns, CAP_NET_RAW, CAP_NET_ADMIN)) {
err = -EPERM;
break;
}
@@ -918,8 +917,7 @@ static int dgram_setsockopt(struct sock *sk, int level, int optname,
}
break;
case WPAN_SECURITY_LEVEL:
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
- !ns_capable(net->user_ns, CAP_NET_RAW)) {
+ if (!ns_capable_any(net->user_ns, CAP_NET_RAW, CAP_NET_ADMIN)) {
err = -EPERM;
break;
}
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 445a9ecaefa1..2da0a450edf6 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -1339,8 +1339,7 @@ static int do_ip_setsockopt(struct sock *sk, int level, int optname,
break;
case IP_TRANSPARENT:
- if (!!val && !ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) &&
- !ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) {
+ if (!!val && !ns_capable_any(sock_net(sk)->user_ns, CAP_NET_RAW, CAP_NET_ADMIN)) {
err = -EPERM;
break;
}
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 222f6bf220ba..25babd7ce844 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -634,8 +634,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
break;
case IPV6_TRANSPARENT:
- if (valbool && !ns_capable(net->user_ns, CAP_NET_RAW) &&
- !ns_capable(net->user_ns, CAP_NET_ADMIN)) {
+ if (valbool && !ns_capable_any(net->user_ns, CAP_NET_RAW, CAP_NET_ADMIN)) {
retv = -EPERM;
break;
}
diff --git a/net/unix/scm.c b/net/unix/scm.c
index aa27a02478dc..6c47baf04d7d 100644
--- a/net/unix/scm.c
+++ b/net/unix/scm.c
@@ -99,7 +99,7 @@ static inline bool too_many_unix_fds(struct task_struct *p)
struct user_struct *user = current_user();
if (unlikely(user->unix_inflight > task_rlimit(p, RLIMIT_NOFILE)))
- return !capable(CAP_SYS_RESOURCE) && !capable(CAP_SYS_ADMIN);
+ return !capable_any(CAP_SYS_RESOURCE, CAP_SYS_ADMIN);
return false;
}
--
2.36.1
next prev parent reply other threads:[~2022-06-15 15:27 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 14:49 [RFC PATCH 2/2] capability: use new capable_or functionality Christian Göttsche
2022-02-17 14:49 ` [RFC PATCH 1/2] capability: add capable_or to test for multiple caps with exactly one audit message Christian Göttsche
2022-05-02 16:00 ` [PATCH v2 2/8] capability: use new capable_or functionality Christian Göttsche
2022-05-02 16:00 ` [PATCH v2 3/8] block: " Christian Göttsche
2022-05-02 16:00 ` [PATCH v2 4/8] drivers: " Christian Göttsche
2022-05-09 10:44 ` Jiri Slaby
2022-05-09 10:46 ` Hans Verkuil
2022-05-02 16:00 ` [PATCH v2 5/8] fs: " Christian Göttsche
2022-05-02 16:00 ` [PATCH v2 6/8] kernel: " Christian Göttsche
2022-05-02 16:00 ` [PATCH v2 7/8] kernel/bpf: " Christian Göttsche
2022-05-02 16:00 ` [PATCH v2 8/8] net: " Christian Göttsche
2022-05-09 17:15 ` Serge E. Hallyn
2022-05-22 17:33 ` Serge E. Hallyn
2022-05-02 16:00 ` [PATCH v2 1/8] capability: add capable_or to test for multiple caps with exactly one audit message Christian Göttsche
2022-05-09 17:12 ` Serge E. Hallyn
2022-06-15 15:26 ` [PATCH v3 2/8] capability: use new capable_any functionality Christian Göttsche
2022-06-15 15:26 ` [PATCH v3 3/8] block: " Christian Göttsche
2022-06-16 3:00 ` Bart Van Assche
2022-06-15 15:26 ` [PATCH v3 4/8] drivers: " Christian Göttsche
2022-06-15 15:45 ` Laurent Pinchart
2022-06-15 15:26 ` [PATCH v3 5/8] fs: " Christian Göttsche
2022-06-28 12:56 ` Christian Brauner
2022-06-28 14:11 ` Christian Göttsche
2022-06-15 15:26 ` [PATCH v3 6/8] kernel: " Christian Göttsche
2022-06-15 15:26 ` [PATCH v3 7/8] bpf: " Christian Göttsche
2022-06-15 15:26 ` Christian Göttsche [this message]
2022-06-15 15:26 ` [PATCH v3 1/8] capability: add any wrapper to test for multiple caps with exactly one audit message Christian Göttsche
2022-06-26 22:34 ` Serge E. Hallyn
2022-08-30 15:05 ` Christian Göttsche
2022-08-30 15:10 ` Paul Moore
2022-09-02 0:56 ` Paul Moore
2022-09-02 1:35 ` Paul Moore
2022-02-17 17:29 ` [RFC PATCH 2/2] capability: use new capable_or functionality Alexei Starovoitov
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