tree: add routines to fetch additional subsystem attributes

src/libnvme.map

@@ -1,4 +1,10 @@
 # SPDX-License-Identifier: LGPL-2.1-or-later
+LIBNVME_1.13 {
+	global:
+		nvme_subsystem_get_fw_rev;
+		nvme_subsystem_get_model;
+};
+
 LIBNVME_1.12 {
 	global:
 		nvme_lm_cdq;

src/nvme/tree.c

@@ -527,6 +527,16 @@ const char *nvme_subsystem_get_iopolicy(nvme_subsystem_t s)
 	return s->iopolicy;
 }
 
+const char *nvme_subsystem_get_model(nvme_subsystem_t s)
+{
+	return s->model;
+}
+
+const char *nvme_subsystem_get_fw_rev(nvme_subsystem_t s)
+{
+	return s->firmware;
+}
+
 nvme_ctrl_t nvme_subsystem_first_ctrl(nvme_subsystem_t s)
 {
 	return list_top(&s->ctrls, struct nvme_ctrl, entry);

src/nvme/tree.h

@@ -1346,6 +1346,22 @@ void nvme_subsystem_set_application(nvme_subsystem_t s, const char *a);
  */
 const char *nvme_subsystem_get_iopolicy(nvme_subsystem_t s);
 
+/**
+ * nvme_subsystem_get_model() - Return the model of subsystem
+ * @s:	nvme_subsystem_t object
+ *
+ * Return: Model of the current subsystem
+ */
+const char *nvme_subsystem_get_model(nvme_subsystem_t s);
+
+/**
+ * nvme_subsystem_get_fw_rev() - Return the firmware rev of subsystem
+ * @s:	nvme_subsystem_t object
+ *
+ * Return: Firmware revision of the current subsystem
+ */
+const char *nvme_subsystem_get_fw_rev(nvme_subsystem_t s);
+
 /**
  * nvme_scan_topology() - Scan NVMe topology and apply filter
  * @r:	    nvme_root_t object