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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-22 23:27:17 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-22 23:27:17 +0900
commit69c1f05379a34786da96d0fdedc111cdcdecdf6f (patch)
tree74a0cde11fbc619c227af89e0757036ab20323d0 /net/core/sock.c
parent007dfe5ad6d039df784b44285bae89654eab3258 (diff)
parent4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff)
Merge 3.15-rc6 into staging-next.
This resolves the conflicts in the files: drivers/iio/adc/Kconfig drivers/staging/rtl8723au/os_dep/usb_ops_linux.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core/sock.c')
-rw-r--r--net/core/sock.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index b4fff008136..664ee4295b6 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -145,6 +145,55 @@
static DEFINE_MUTEX(proto_list_mutex);
static LIST_HEAD(proto_list);
+/**
+ * sk_ns_capable - General socket capability test
+ * @sk: Socket to use a capability on or through
+ * @user_ns: The user namespace of the capability to use
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket had when the socket was
+ * created and the current process has the capability @cap in the user
+ * namespace @user_ns.
+ */
+bool sk_ns_capable(const struct sock *sk,
+ struct user_namespace *user_ns, int cap)
+{
+ return file_ns_capable(sk->sk_socket->file, user_ns, cap) &&
+ ns_capable(user_ns, cap);
+}
+EXPORT_SYMBOL(sk_ns_capable);
+
+/**
+ * sk_capable - Socket global capability test
+ * @sk: Socket to use a capability on or through
+ * @cap: The global capbility to use
+ *
+ * Test to see if the opener of the socket had when the socket was
+ * created and the current process has the capability @cap in all user
+ * namespaces.
+ */
+bool sk_capable(const struct sock *sk, int cap)
+{
+ return sk_ns_capable(sk, &init_user_ns, cap);
+}
+EXPORT_SYMBOL(sk_capable);
+
+/**
+ * sk_net_capable - Network namespace socket capability test
+ * @sk: Socket to use a capability on or through
+ * @cap: The capability to use
+ *
+ * Test to see if the opener of the socket had when the socke was created
+ * and the current process has the capability @cap over the network namespace
+ * the socket is a member of.
+ */
+bool sk_net_capable(const struct sock *sk, int cap)
+{
+ return sk_ns_capable(sk, sock_net(sk)->user_ns, cap);
+}
+EXPORT_SYMBOL(sk_net_capable);
+
+
#ifdef CONFIG_MEMCG_KMEM
int mem_cgroup_sockets_init(struct mem_cgroup *memcg, struct cgroup_subsys *ss)
{