[ndctl PATCH v2] ndctl: Add 'list' verbose options

[ndctl PATCH v2] ndctl: Add 'list' verbose options

[Keith Busch]

The informational and miscellaneous flag options are becoming more
numerous, and can be difficult to remember what can be listed. This
patch adds a 'verbose' option that increases the detail listed by
automatically enabling options and less essential information.

The verbose option can be repeated multiple times to increase the
detail. There are currently three levels of verbose with output detail
documented in the ndctl list manpage.

Signed-off-by: Keith Busch <keith.busch@intel.com>
---
v1 -> v2:

  Squashed the code and documentation into a single patch.

  Documented what each level of '-v' provides.

  Changed the output for the first level -v to not automatically enabled
  dimms, buses and regions. Those are not enabled until the second
  verbose option.

 Documentation/ndctl/ndctl-list.txt | 14 ++++++++++++++
 ndctl/list.c                       | 25 ++++++++++++++++++++++++-
 util/json.c                        | 33 +++++++++++++++++++--------------
 util/json.h                        |  1 +
 4 files changed, 58 insertions(+), 15 deletions(-)

diff --git a/Documentation/ndctl/ndctl-list.txt b/Documentation/ndctl/ndctl-list.txt
index 13ebdcd..19678bd 100644
--- a/Documentation/ndctl/ndctl-list.txt
+++ b/Documentation/ndctl/ndctl-list.txt
@@ -200,6 +200,20 @@ include::xable-region-options.txt[]
   ]
 }
 
+-v::
+--verbose::
+	Increase verbosity of the output. This can be specified
+	multiple times to be even more verbose on the informational and
+	miscellaneous output, and can be used to override omitted flags
+	for showing specific information. +
+*-v*
+In addition to the enabled namespaces default output, show the numa_node,
+raw_uuid, and bad block media errors. +
+*-vv*
+Everything '-v' provides, plus automatically enable --dimms, --buses, and --regions. +
+*-vvv*
+Everything '-vv' provides, plus --health, --idle, and --firmware.
+
 include::human-option.txt[]
 
 ----
diff --git a/ndctl/list.c b/ndctl/list.c
index 6cf7c39..3e13d7a 100644
--- a/ndctl/list.c
+++ b/ndctl/list.c
@@ -36,6 +36,7 @@ static struct {
 	bool media_errors;
 	bool human;
 	bool firmware;
+	int verbose;
 } list;
 
 static unsigned long listopts_to_flags(void)
@@ -50,6 +51,8 @@ static unsigned long listopts_to_flags(void)
 		flags |= UTIL_JSON_DAX | UTIL_JSON_DAX_DEVS;
 	if (list.human)
 		flags |= UTIL_JSON_HUMAN;
+	if (list.verbose)
+		flags |= UTIL_JSON_VERBOSE;
 	return flags;
 }
 
@@ -112,7 +115,7 @@ static struct json_object *region_to_json(struct ndctl_region *region,
 	numa = ndctl_region_get_numa_node(region);
 	if (numa >= 0) {
 		jobj = json_object_new_int(numa);
-		if (jobj)
+		if (jobj && flags & UTIL_JSON_VERBOSE)
 			json_object_object_add(jregion, "numa_node", jobj);
 	}
 
@@ -444,6 +447,8 @@ int cmd_list(int argc, const char **argv, void *ctx)
 				"include media errors"),
 		OPT_BOOLEAN('u', "human", &list.human,
 				"use human friendly number formats "),
+		OPT_INCR('v', "verbose", &list.verbose,
+				"increase output detail"),
 		OPT_END(),
 	};
 	const char * const u[] = {
@@ -468,6 +473,24 @@ int cmd_list(int argc, const char **argv, void *ctx)
 			param.mode = "dax";
 	}
 
+	switch (list.verbose) {
+	default:
+	case 3:
+		list.idle = true;
+		list.firmware = true;
+		list.health = true;
+	case 2:
+		list.dimms = true;
+		list.buses = true;
+		list.regions = true;
+	case 1:
+		list.media_errors = true;
+		list.namespaces = true;
+		list.dax = true;
+	case 0:
+		break;
+	}
+
 	if (num_list_flags() == 0)
 		list.namespaces = true;
 
diff --git a/util/json.c b/util/json.c
index 1772177..a9f028b 100644
--- a/util/json.c
+++ b/util/json.c
@@ -660,6 +660,21 @@ static struct json_object *util_raw_uuid(struct ndctl_namespace *ndns)
 	return json_object_new_string(buf);
 }
 
+static void util_raw_uuid_to_json(struct ndctl_namespace *ndns,
+				  unsigned long flags,
+				  struct json_object *jndns)
+{
+	struct json_object *jobj;
+
+	if (!(flags & UTIL_JSON_VERBOSE))
+		return;
+
+	jobj = util_raw_uuid(ndns);
+	if (!jobj)
+		return;
+	json_object_object_add(jndns, "raw_uuid", jobj);
+}
+
 struct json_object *util_namespace_to_json(struct ndctl_namespace *ndns,
 		unsigned long flags)
 {
@@ -732,11 +747,7 @@ struct json_object *util_namespace_to_json(struct ndctl_namespace *ndns,
 		if (!jobj)
 			goto err;
 		json_object_object_add(jndns, "uuid", jobj);
-
-		jobj = util_raw_uuid(ndns);
-		if (!jobj)
-			goto err;
-		json_object_object_add(jndns, "raw_uuid", jobj);
+		util_raw_uuid_to_json(ndns, flags, jndns);
 		bdev = ndctl_btt_get_block_device(btt);
 	} else if (pfn) {
 		ndctl_pfn_get_uuid(pfn, uuid);
@@ -745,10 +756,7 @@ struct json_object *util_namespace_to_json(struct ndctl_namespace *ndns,
 		if (!jobj)
 			goto err;
 		json_object_object_add(jndns, "uuid", jobj);
-		jobj = util_raw_uuid(ndns);
-		if (!jobj)
-			goto err;
-		json_object_object_add(jndns, "raw_uuid", jobj);
+		util_raw_uuid_to_json(ndns, flags, jndns);
 		bdev = ndctl_pfn_get_block_device(pfn);
 	} else if (dax) {
 		struct daxctl_region *dax_region;
@@ -760,10 +768,7 @@ struct json_object *util_namespace_to_json(struct ndctl_namespace *ndns,
 		if (!jobj)
 			goto err;
 		json_object_object_add(jndns, "uuid", jobj);
-		jobj = util_raw_uuid(ndns);
-		if (!jobj)
-			goto err;
-		json_object_object_add(jndns, "raw_uuid", jobj);
+		util_raw_uuid_to_json(ndns, flags, jndns);
 		if ((flags & UTIL_JSON_DAX) && dax_region) {
 			jobj = util_daxctl_region_to_json(dax_region, NULL,
 					flags);
@@ -810,7 +815,7 @@ struct json_object *util_namespace_to_json(struct ndctl_namespace *ndns,
 	 * happens because they use pre-v1.2 labels or because they
 	 * don't have a label space (devtype=nd_namespace_io).
 	 */
-	if (sector_size < UINT_MAX) {
+	if (sector_size < UINT_MAX && flags & UTIL_JSON_VERBOSE) {
 		jobj = json_object_new_int(sector_size);
 		if (!jobj)
 			goto err;
diff --git a/util/json.h b/util/json.h
index c5d1603..17e9320 100644
--- a/util/json.h
+++ b/util/json.h
@@ -23,6 +23,7 @@ enum util_json_flags {
 	UTIL_JSON_DAX = (1 << 2),
 	UTIL_JSON_DAX_DEVS = (1 << 3),
 	UTIL_JSON_HUMAN = (1 << 4),
+	UTIL_JSON_VERBOSE = (1 << 5),
 };
 
 struct json_object;
-- 
2.14.3

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