nfs: option to disable acl

1. Option to disable or enable acl with nfs.acl boolean
   option.

2. Deregister the acl service with the portmapper service
   when no longer required.

Change-Id: I6562b6b40138d040aa2bf1e5641f4c0e0e9f9d09
BUG: 970070
Signed-off-by: Rajesh Amaravathi <rajesh@redhat.com>
Reviewed-on: http://review.gluster.org/5136
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

4 files changed, 33 insertions, 6 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index ea5799ae632..a732d28d0d5 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -70,6 +70,9 @@
 #define NLMV4_VERSION       4
 #define NLMV1_VERSION       1
 
+#define ACL_PROGRAM         100227
+#define ACLV3_VERSION       3
+
 #define CEILING_POS(X) (((X)-(int)(X)) > 0 ? (int)((X)+1) : (int)(X))
 
 static glusterd_lock_t lock;
@@ -3677,6 +3680,10 @@ glusterd_nfs_pmap_deregister ()
         else
                 gf_log ("", GF_LOG_ERROR, "De-registration of NLM v1 failed");
 
+        if (pmap_unset (ACL_PROGRAM, ACLV3_VERSION))
+                gf_log ("", GF_LOG_INFO, "De-registered ACL v3 successfully");
+        else
+                gf_log ("", GF_LOG_ERROR, "De-registration of ACL v3 failed");
 }
 
 int
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-set.c b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
index 6d1715bc834..f112ccfc298 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
@@ -1146,6 +1146,12 @@ struct volopt_map_entry glusterd_volopt_map[] = {
           .type        = GLOBAL_DOC,
           .op_version  = 1
         },
+        { .key         = "nfs.acl",
+          .voltype     = "nfs/server",
+          .option      = "nfs.acl",
+          .type        = GLOBAL_DOC,
+          .op_version  = 2
+        },
         { .key         = "nfs.mount-udp",
           .voltype     = "nfs/server",
           .option      = "nfs.mount-udp",
diff --git a/xlators/nfs/server/src/nfs.c b/xlators/nfs/server/src/nfs.c
index 8bb3fccf235..7b36d59e82a 100644
--- a/xlators/nfs/server/src/nfs.c
+++ b/xlators/nfs/server/src/nfs.c
@@ -190,11 +190,13 @@ nfs_add_all_initiators (struct nfs_state *nfs)
                 }
         }
 
-        ret = nfs_add_initer (&nfs->versions, acl3svc_init);
-        if (ret == -1) {
-                gf_log (GF_NFS, GF_LOG_ERROR, "Failed to add protocol"
-                        " initializer");
-                goto ret;
+        if (nfs->enable_acl == _gf_true) {
+                ret = nfs_add_initer (&nfs->versions, acl3svc_init);
+                if (ret == -1) {
+                        gf_log (GF_NFS, GF_LOG_ERROR, "Failed to add "
+                                "ACL protocol initializer");
+                        goto ret;
+                }
         }
 
         ret = 0;
@@ -604,6 +606,13 @@ nfs_init_state (xlator_t *this)
                 }
         }
 
+        nfs->enable_acl = _gf_true;
+        ret = dict_get_str_boolean (this->options, "nfs.acl", _gf_true);
+        if (ret == _gf_false) {
+                gf_log (GF_NFS, GF_LOG_INFO, "ACL is manually disabled");
+                nfs->enable_acl = _gf_false;
+        }
+
         nfs->enable_ino32 = 0;
         if (dict_get (this->options, "nfs.enable-ino32")) {
                 ret = dict_get_str (this->options, "nfs.enable-ino32",
@@ -1300,7 +1309,11 @@ struct volume_options options[] = {
           .description = "Number of seconds to cache auxiliary-GID data, when "
                          OPT_SERVER_AUX_GIDS " is set."
         },
-
+        { .key = {"nfs.acl"},
+          .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
+          .description = "This option is used to control ACL support for NFS."
+        },
         { .key  = {NULL} },
 };
 
diff --git a/xlators/nfs/server/src/nfs.h b/xlators/nfs/server/src/nfs.h
index 7d5163dfe0e..936d929be94 100644
--- a/xlators/nfs/server/src/nfs.h
+++ b/xlators/nfs/server/src/nfs.h
@@ -86,6 +86,7 @@ struct nfs_state {
         unsigned int            override_portnum;
         int                     allow_insecure;
         int                     enable_nlm;
+        int                     enable_acl;
         int                     mount_udp;
         struct rpc_clnt         *rpc_clnt;
         gf_boolean_t            server_aux_gids;