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authorDavid Howells <dhowells@redhat.com>2019-06-26 22:02:33 +0200
committerDavid Howells <dhowells@redhat.com>2019-06-28 00:02:12 +0200
commita58946c158a040068e7c94dc1d58bbd273258068 (patch)
treee655258b700359cdfd9f762c099b7587dc0eed9b /net
parentkeys: Network namespace domain tag (diff)
downloadlinux-a58946c158a040068e7c94dc1d58bbd273258068.tar.xz
linux-a58946c158a040068e7c94dc1d58bbd273258068.zip
keys: Pass the network namespace into request_key mechanism
Create a request_key_net() function and use it to pass the network namespace domain tag into DNS revolver keys and rxrpc/AFS keys so that keys for different domains can coexist in the same keyring. Signed-off-by: David Howells <dhowells@redhat.com> cc: netdev@vger.kernel.org cc: linux-nfs@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: linux-afs@lists.infradead.org
Diffstat (limited to 'net')
-rw-r--r--net/ceph/messenger.c3
-rw-r--r--net/dns_resolver/dns_query.c7
-rw-r--r--net/rxrpc/key.c4
3 files changed, 9 insertions, 5 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index cd0b094468b6..a33402c99321 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1887,7 +1887,8 @@ static int ceph_dns_resolve_name(const char *name, size_t namelen,
return -EINVAL;
/* do dns_resolve upcall */
- ip_len = dns_query(NULL, name, end - name, NULL, &ip_addr, NULL, false);
+ ip_len = dns_query(current->nsproxy->net_ns,
+ NULL, name, end - name, NULL, &ip_addr, NULL, false);
if (ip_len > 0)
ret = ceph_pton(ip_addr, ip_len, addr, -1, NULL);
else
diff --git a/net/dns_resolver/dns_query.c b/net/dns_resolver/dns_query.c
index 2d260432b3be..cab4e0df924f 100644
--- a/net/dns_resolver/dns_query.c
+++ b/net/dns_resolver/dns_query.c
@@ -40,6 +40,7 @@
#include <linux/cred.h>
#include <linux/dns_resolver.h>
#include <linux/err.h>
+#include <net/net_namespace.h>
#include <keys/dns_resolver-type.h>
#include <keys/user-type.h>
@@ -48,6 +49,7 @@
/**
* dns_query - Query the DNS
+ * @net: The network namespace to operate in.
* @type: Query type (or NULL for straight host->IP lookup)
* @name: Name to look up
* @namelen: Length of name
@@ -69,7 +71,8 @@
*
* Returns the size of the result on success, -ve error code otherwise.
*/
-int dns_query(const char *type, const char *name, size_t namelen,
+int dns_query(struct net *net,
+ const char *type, const char *name, size_t namelen,
const char *options, char **_result, time64_t *_expiry,
bool invalidate)
{
@@ -122,7 +125,7 @@ int dns_query(const char *type, const char *name, size_t namelen,
* add_key() to preinstall malicious redirections
*/
saved_cred = override_creds(dns_resolver_cache);
- rkey = request_key(&key_type_dns_resolver, desc, options);
+ rkey = request_key_net(&key_type_dns_resolver, desc, net, options);
revert_creds(saved_cred);
kfree(desc);
if (IS_ERR(rkey)) {
diff --git a/net/rxrpc/key.c b/net/rxrpc/key.c
index 2722189ec273..1cc6b0c6cc42 100644
--- a/net/rxrpc/key.c
+++ b/net/rxrpc/key.c
@@ -914,7 +914,7 @@ int rxrpc_request_key(struct rxrpc_sock *rx, char __user *optval, int optlen)
if (IS_ERR(description))
return PTR_ERR(description);
- key = request_key(&key_type_rxrpc, description, NULL);
+ key = request_key_net(&key_type_rxrpc, description, sock_net(&rx->sk), NULL);
if (IS_ERR(key)) {
kfree(description);
_leave(" = %ld", PTR_ERR(key));
@@ -945,7 +945,7 @@ int rxrpc_server_keyring(struct rxrpc_sock *rx, char __user *optval,
if (IS_ERR(description))
return PTR_ERR(description);
- key = request_key(&key_type_keyring, description, NULL);
+ key = request_key_net(&key_type_keyring, description, sock_net(&rx->sk), NULL);
if (IS_ERR(key)) {
kfree(description);
_leave(" = %ld", PTR_ERR(key));