nfs: gluster volume set help shows null as default value

Bug(967445): The default value for all nfs options is displayed as "(null)"

Fix: Changed nfs options to show default value.

Change-Id: I3b1f27439c19a6655f7dcc7891df40706db9e474
BUG: 967445
Signed-off-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-on: http://review.gluster.org/5098
Reviewed-by: Santosh Pradhan <spradhan@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

1 files changed, 44 insertions, 11 deletions

diff --git a/xlators/nfs/server/src/nfs.c b/xlators/nfs/server/src/nfs.c
index 1d59ad399cb..8bb3fccf235 100644
--- a/xlators/nfs/server/src/nfs.c
+++ b/xlators/nfs/server/src/nfs.c
@@ -44,6 +44,9 @@
 #include "options.h"
 #include "acl3.h"
 
+#define STRINGIFY(val) #val
+#define TOSTRING(val) STRINGIFY(val)
+
 #define OPT_SERVER_AUX_GIDS             "nfs.server-aux-gids"
 #define OPT_SERVER_GID_CACHE_TIMEOUT    "nfs.server.aux-gid-timeout"
 
@@ -747,10 +750,10 @@ nfs_init_state (xlator_t *this)
         GF_OPTION_INIT (OPT_SERVER_GID_CACHE_TIMEOUT, nfs->server_aux_gids_max_age,
                         uint32, free_foppool);
 
-	if (gid_cache_init(&nfs->gid_cache, nfs->server_aux_gids_max_age) < 0) {
-		gf_log(GF_NFS, GF_LOG_ERROR, "Failed to initialize group cache.");
-		goto free_foppool;
-	}
+        if (gid_cache_init(&nfs->gid_cache, nfs->server_aux_gids_max_age) < 0) {
+                gf_log(GF_NFS, GF_LOG_ERROR, "Failed to initialize group cache.");
+                goto free_foppool;
+        }
 
         if (stat("/sbin/rpc.statd", &stbuf) == -1) {
                 gf_log (GF_NFS, GF_LOG_WARNING, "/sbin/rpc.statd not found. "
@@ -1019,29 +1022,34 @@ struct xlator_dumpops dumpops = {
 struct volume_options options[] = {
         { .key  = {"nfs3.read-size"},
           .type = GF_OPTION_TYPE_SIZET,
+          .default_value = TOSTRING(GF_NFS3_RTPREF),
           .description = "Size in which the client should issue read requests"
                          " to the Gluster NFSv3 server. Must be a multiple of"
                          " 4KB."
         },
         { .key  = {"nfs3.write-size"},
           .type = GF_OPTION_TYPE_SIZET,
+          .default_value = TOSTRING(GF_NFS3_WTPREF),
           .description = "Size in which the client should issue write requests"
                          " to the Gluster NFSv3 server. Must be a multiple of"
                          " 4KB."
         },
         { .key  = {"nfs3.readdir-size"},
           .type = GF_OPTION_TYPE_SIZET,
+          .default_value = TOSTRING(GF_NFS3_DTPREF),
           .description = "Size in which the client should issue directory "
                          " reading requests."
         },
         { .key  = {"nfs3.*.volume-access"},
           .type = GF_OPTION_TYPE_STR,
           .value = {"read-only", "read-write"},
+          .default_value = "read-write",
           .description = "Type of access desired for this subvolume: "
                          " read-only, read-write(default)"
         },
         { .key  = {"nfs3.*.trusted-write"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "off",
           .description = "On an UNSTABLE write from client, return STABLE flag"
                          " to force client to not send a COMMIT request. In "
                          "some environments, combined with a replicated "
@@ -1056,6 +1064,7 @@ struct volume_options options[] = {
         },
         { .key  = {"nfs3.*.trusted-sync"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "off",
           .description = "All writes and COMMIT requests are treated as async."
                          " This implies that no write requests are guaranteed"
                          " to be on server disks when the write reply is "
@@ -1065,6 +1074,7 @@ struct volume_options options[] = {
         },
         { .key  = {"nfs3.*.export-dir"},
           .type = GF_OPTION_TYPE_PATH,
+          .default_value = "",
           .description = "By default, all subvolumes of nfs are exported as "
                          "individual exports. There are cases where a "
                          "subdirectory or subdirectories in the volume need to "
@@ -1075,15 +1085,17 @@ struct volume_options options[] = {
         },
         { .key  = {"nfs3.export-dirs"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "By default, all subvolumes of nfs are exported as "
                          "individual exports. There are cases where a "
                          "subdirectory or subdirectories in the volume need to "
                          "be exported separately. Enabling this option allows "
                          "any directory on a volumes to be exported separately."
-                         " Directory exports are enabled by default."
+                         "Directory exports are enabled by default."
         },
         { .key  = {"nfs3.export-volumes"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "Enable or disable exporting whole volumes, instead "
                          "if used in conjunction with nfs3.export-dir, can "
                          "allow setting up only subdirectories as exports. On "
@@ -1091,6 +1103,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.auth-unix"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "Disable or enable the AUTH_UNIX authentication type."
                          "Must always be enabled for better interoperability."
                          "However, can be disabled if needed. Enabled by"
@@ -1098,12 +1111,14 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.auth-null"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "Disable or enable the AUTH_NULL authentication type."
                          "Must always be enabled. This option is here only to"
                          " avoid unrecognized option warnings"
         },
         { .key  = {"rpc-auth.auth-unix.*"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "Disable or enable the AUTH_UNIX authentication type "
                          "for a particular exported volume overriding defaults"
                          " and general setting for AUTH_UNIX scheme. Must "
@@ -1113,6 +1128,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.auth-unix.*.allow"},
           .type = GF_OPTION_TYPE_STR,
+          .default_value = "on",
           .description = "Disable or enable the AUTH_UNIX authentication type "
                          "for a particular exported volume overriding defaults"
                          " and general setting for AUTH_UNIX scheme. Must "
@@ -1122,6 +1138,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.auth-null.*"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "Disable or enable the AUTH_NULL authentication type "
                          "for a particular exported volume overriding defaults"
                          " and general setting for AUTH_NULL. Must always be "
@@ -1130,6 +1147,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.addr.allow"},
           .type = GF_OPTION_TYPE_INTERNET_ADDRESS_LIST,
+          .default_value = "all",
           .description = "Allow a comma separated list of addresses and/or"
                          " hostnames to connect to the server. By default, all"
                          " connections are allowed. This allows users to "
@@ -1137,6 +1155,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.addr.reject"},
           .type = GF_OPTION_TYPE_INTERNET_ADDRESS_LIST,
+          .default_value = "none",
           .description = "Reject a comma separated list of addresses and/or"
                          " hostnames from connecting to the server. By default,"
                          " all connections are allowed. This allows users to"
@@ -1144,6 +1163,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.addr.*.allow"},
           .type = GF_OPTION_TYPE_INTERNET_ADDRESS_LIST,
+          .default_value = "all",
           .description = "Allow a comma separated list of addresses and/or"
                          " hostnames to connect to the server. By default, all"
                          " connections are allowed. This allows users to "
@@ -1151,6 +1171,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.addr.*.reject"},
           .type = GF_OPTION_TYPE_INTERNET_ADDRESS_LIST,
+          .default_value = "none",
           .description = "Reject a comma separated list of addresses and/or"
                          " hostnames from connecting to the server. By default,"
                          " all connections are allowed. This allows users to"
@@ -1158,6 +1179,7 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.ports.insecure"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "off",
           .description = "Allow client connections from unprivileged ports. By "
                          "default only privileged ports are allowed. This is a"
                          "global setting in case insecure ports are to be "
@@ -1165,31 +1187,35 @@ struct volume_options options[] = {
         },
         { .key  = {"rpc-auth.ports.*.insecure"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "off",
           .description = "Allow client connections from unprivileged ports. By "
                          "default only privileged ports are allowed. Use this"
                          " option to enable or disable insecure ports for "
-                         "a specific subvolume and to override the global setting "
-                         " set by the previous option."
+                         "a specific subvolume and to override the global "
+                         "setting set by the previous option."
         },
         { .key  = {"rpc-auth.addr.namelookup"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "off",
           .description = "Users have the option of turning on name lookup for"
                   " incoming client connections using this option. Use this "
                   "option to turn on name lookups during address-based "
                   "authentication. Turning this on will enable you to"
                   " use hostnames in nfs.rpc-auth-* filters. In some "
                   "setups, the name server can take too long to reply to DNS "
-                  "queries resulting in timeouts of mount requests. By default, "
-                  " name lookup is off"
+                  "queries resulting in timeouts of mount requests. By "
+                  "default, name lookup is off"
         },
         { .key  = {"nfs.dynamic-volumes"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "off",
           .description = "Internal option set to tell gnfs to use a different"
                          " scheme for encoding file handles when DVM is being"
                          " used."
         },
         { .key  = {"nfs3.*.volume-id"},
           .type = GF_OPTION_TYPE_STR,
+          .default_value = "",
           .description = "When nfs.dynamic-volumes is set, gnfs expects every "
                          "subvolume to have this option set for it, so that "
                          "gnfs can use this option to identify the volume. "
@@ -1198,13 +1224,15 @@ struct volume_options options[] = {
         },
         { .key  = {"nfs.enable-ino32"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "no",
           .description = "For nfs clients or apps that do not support 64-bit "
                          "inode numbers, use this option to make NFS return "
-                         "32-bit inode numbers instead. Disabled by default, so "
-                         "NFS returns 64-bit inode numbers."
+                         "32-bit inode numbers instead. Disabled by default, so"
+                         " NFS returns 64-bit inode numbers."
         },
         { .key  = {"rpc.register-with-portmap"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "For systems that need to run multiple nfs servers, "
                          "only one registration is possible with "
                          "portmap service. Use this option to turn off portmap "
@@ -1214,6 +1242,7 @@ struct volume_options options[] = {
           .type = GF_OPTION_TYPE_INT,
           .min  = 1,
           .max  = 0xffff,
+          .default_value = TOSTRING(GF_NFS3_PORT),
           .description = "Use this option on systems that need Gluster NFS to "
                          "be associated with a non-default port number."
         },
@@ -1221,6 +1250,7 @@ struct volume_options options[] = {
           .type = GF_OPTION_TYPE_INT,
           .min  = 1,
           .max  = 1024,
+          .default_value = TOSTRING(GF_NFS_DEFAULT_MEMFACTOR),
           .description = "Use this option to make NFS be faster on systems by "
                          "using more memory. This option specifies a multiple "
                          "that determines the total amount of memory used. "
@@ -1231,12 +1261,14 @@ struct volume_options options[] = {
         },
         { .key  = {"nfs.*.disable"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "false",
           .description = "This option is used to start or stop NFS server"
                          "for individual volume."
         },
 
         { .key  = {"nfs.nlm"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "on",
           .description = "This option, if set to 'off', disables NLM server "
                          "by not registering the service with the portmapper."
                          " Set it to 'on' to re-enable it. Default value: 'on'"
@@ -1244,6 +1276,7 @@ struct volume_options options[] = {
 
         { .key = {"nfs.mount-udp"},
           .type = GF_OPTION_TYPE_BOOL,
+          .default_value = "off",
           .description = "set the option to 'on' to enable mountd on UDP. "
                          "Required for some Solaris and AIX NFS clients. "
                          "The need for enabling this option often depends "