libglusterfs/dict: make 'dict_t' a opaque object

* ie, don't dereference dict_t pointer, instead use APIs everywhere
* other than dict_t only 'data_t' should be the valid export from dict.h

* added 'dict_foreach_fnmatch()' API
* changed dict_lookup() to use data_t, instead of data_pair_t

Change-Id: I400bb0dd55519a7c5d2a107e67c8e7a7207228dc
Signed-off-by: Amar Tumballi <amarts@redhat.com>
BUG: 850917
Reviewed-on: http://review.gluster.org/3829
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

2 files changed, 41 insertions, 51 deletions

diff --git a/cli/src/cli-rpc-ops.c b/cli/src/cli-rpc-ops.c
index 9d699a0fd..9d8aa26ee 100644
--- a/cli/src/cli-rpc-ops.c
+++ b/cli/src/cli-rpc-ops.c
@@ -478,7 +478,6 @@ gf_cli_get_volume_cbk (struct rpc_req *req, struct iovec *iov,
 {
         int                        ret                  = -1;
         int                        opt_count            = 0;
-        int                        k                    = 0;
         int32_t                    i                    = 0;
         int32_t                    j                    = 1;
         int32_t                    status               = 0;
@@ -494,7 +493,6 @@ gf_cli_get_volume_cbk (struct rpc_req *req, struct iovec *iov,
         char                      *brick                = NULL;
         char                      *volname              = NULL;
         dict_t                    *dict                 = NULL;
-        data_pair_t               *pairs                = NULL;
         data_t                    *value                = NULL;
         cli_local_t               *local                = NULL;
         char                       key[1024]            = {0};
@@ -709,12 +707,6 @@ xml_output:
                         j++;
                 }
 
-                pairs = dict->members_list;
-                if (!pairs) {
-                        ret = -1;
-                        goto out;
-                }
-
                 snprintf (key, 256, "volume%d.opt_count",i);
                 ret = dict_get_int32 (dict, key, &opt_count);
                 if (ret)
@@ -724,26 +716,26 @@ xml_output:
                         goto out;
 
                 cli_out ("Options Reconfigured:");
-                k = 0;
 
-                while (k < opt_count) {
-
-                        snprintf (key, 256, "volume%d.option.",i);
-                        while (pairs) {
-                                ptr = strstr (pairs->key, "option.");
-                                if (ptr) {
-                                        value = pairs->value;
-                                        if (!value) {
-                                                ret = -1;
-                                                goto out;
-                                        }
-                                        cli_out_options (key, pairs->key,
-                                                         value->data);
+                snprintf (key, 256, "volume%d.option.",i);
+                int _output_volinfo_opts (dict_t *d, char *k,
+                                          data_t *v, void *tmp)
+                {
+                        ptr = strstr (k, "option.");
+                        if (ptr) {
+                                value = v;
+                                if (!value) {
+                                        ret = -1;
+                                        goto internal_out;
                                 }
-                                pairs = pairs->next;
+                                cli_out_options (key, k, v->data);
                         }
-                        k++;
+                internal_out:
+                        return ret;
                 }
+                ret = dict_foreach (dict, _output_volinfo_opts, NULL);
+                if (ret)
+                        goto out;
 
                 i++;
         }
diff --git a/cli/src/cli-xml-output.c b/cli/src/cli-xml-output.c
index eebcafb97..7ca57164e 100644
--- a/cli/src/cli-xml-output.c
+++ b/cli/src/cli-xml-output.c
@@ -136,7 +136,7 @@ out:
         return ret;
 }
 
-void
+int
 cli_xml_output_data_pair (dict_t *this, char *key, data_t *value,
                           void *data)
 {
@@ -148,7 +148,7 @@ cli_xml_output_data_pair (dict_t *this, char *key, data_t *value,
         ret = xmlTextWriterWriteFormatElement (*writer, (xmlChar *)key,
                                                "%s", value->data);
 
-        return;
+        return ret;
 }
 
 int
@@ -2077,17 +2077,9 @@ cli_xml_output_vol_info_options (xmlTextWriterPtr writer, dict_t *dict,
 {
         int             ret = -1;
         int             opt_count = 0;
-        data_pair_t     *pairs = 0;
         data_t          *value = 0;
         char            *ptr = NULL;
         char            key[1024] = {0,};
-        int             i = 0;
-
-        pairs = dict->members_list;
-        if (!pairs) {
-                ret = -1;
-                goto out;
-        }
 
         snprintf (key, sizeof (key), "%s.opt_count", prefix);
         ret = dict_get_int32 (dict, key, &opt_count);
@@ -2100,25 +2092,31 @@ cli_xml_output_vol_info_options (xmlTextWriterPtr writer, dict_t *dict,
         /* <options> */
         ret = xmlTextWriterStartElement (writer, (xmlChar *)"options");
         XML_RET_CHECK_AND_GOTO (ret, out);
-        while (i < opt_count) {
-                snprintf (key, sizeof (key), "%s.option.", prefix);
-                while (pairs) {
-                        ptr = strstr (pairs->key, "option.");
-                        if (ptr) {
-                                value = pairs->value;
-                                if (!value) {
-                                        ret = -1;
-                                        goto out;
-                                }
-                                ret = cli_xml_output_vol_info_option
-                                        (writer, key, pairs->key, value->data);
-                                if (ret)
-                                        goto out;
-                        }
-                        pairs = pairs->next;
+        snprintf (key, sizeof (key), "%s.option.", prefix);
+
+        int _output_vol_info_option (dict_t *d, char *k, data_t *v,
+                                     void *data)
+        {
+                int ret = 0;
+                ptr = strstr (k, "option.");
+                if (!ptr)
+                        goto internal_out;
+
+                value = v;
+                if (!value) {
+                        ret = -1;
+                        goto internal_out;
                 }
-                i++;
+                ret = cli_xml_output_vol_info_option (writer, key, k,
+                                                      v->data);
+
+        internal_out:
+                return ret;
         }
+        ret = dict_foreach (dict, _output_vol_info_option, NULL);
+        if (ret)
+                goto out;
+
         /* </options> */
         ret = xmlTextWriterEndElement (writer);
         XML_RET_CHECK_AND_GOTO (ret, out);