[PATCH] libceph: require cephx message signature by default

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Signed-off-by: Yan, Zheng <zyan@xxxxxxxxxx>
---
 include/linux/ceph/libceph.h |  1 +
 net/ceph/ceph_common.c       | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index d293f7e..8b11a79 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -29,6 +29,7 @@
 #define CEPH_OPT_NOSHARE          (1<<1) /* don't share client with other sbs */
 #define CEPH_OPT_MYIP             (1<<2) /* specified my ip */
 #define CEPH_OPT_NOCRC            (1<<3) /* no data crc on writes */
+#define CEPH_OPT_NOMSGAUTH	  (1<<4) /* not require cephx message signature */
 
 #define CEPH_OPT_DEFAULT   (0)
 
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index d361a274..5d5ab67 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -237,6 +237,8 @@ enum {
 	Opt_noshare,
 	Opt_crc,
 	Opt_nocrc,
+	Opt_cephx_require_signatures,
+	Opt_nocephx_require_signatures,
 };
 
 static match_table_t opt_tokens = {
@@ -255,6 +257,8 @@ static match_table_t opt_tokens = {
 	{Opt_noshare, "noshare"},
 	{Opt_crc, "crc"},
 	{Opt_nocrc, "nocrc"},
+	{Opt_cephx_require_signatures, "cephx_require_signatures"},
+	{Opt_nocephx_require_signatures, "nocephx_require_signatures"},
 	{-1, NULL}
 };
 
@@ -453,6 +457,12 @@ ceph_parse_options(char *options, const char *dev_name,
 		case Opt_nocrc:
 			opt->flags |= CEPH_OPT_NOCRC;
 			break;
+		case Opt_cephx_require_signatures:
+			opt->flags &= ~CEPH_OPT_NOMSGAUTH;
+			break;
+		case Opt_nocephx_require_signatures:
+			opt->flags |= CEPH_OPT_NOMSGAUTH;
+			break;
 
 		default:
 			BUG_ON(token);
@@ -496,6 +506,9 @@ struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
 	init_waitqueue_head(&client->auth_wq);
 	client->auth_err = 0;
 
+	if (!ceph_test_opt(client, NOMSGAUTH))
+		required_features |= CEPH_FEATURE_MSG_AUTH;
+
 	client->extra_mon_dispatch = NULL;
 	client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT |
 		supported_features;
-- 
1.9.3

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