Add most all liblvm 'get' functions needed for anaconda.

Add the most straightforward 'get' functions required for anaconda.
These are the ones that return simple uint64_t values.
The other more complex ones involve the lv_attr bits.  These will
come in a separate patch series since each lv_attr bit will be returned
in a separate API instred of returning the string and requiring the
user to parse it.


Author: Dave Wysochanski <dwysocha@redhat.com>

liblvm/.exported_symbols

@@ -1,12 +1,20 @@
 lvm_create
 lvm_destroy
 lvm_reload_config
-lvm_pv_get_uuid
-lvm_vg_get_uuid
-lvm_lv_get_uuid
 lvm_pv_get_name
+lvm_pv_get_uuid
+lvm_pv_get_mda_count
 lvm_vg_get_name
+lvm_vg_get_uuid
+lvm_vg_get_size
+lvm_vg_get_free
+lvm_vg_get_extent_size
+lvm_vg_get_extent_count
+lvm_vg_get_free_count
+lvm_vg_get_pv_count
+lvm_lv_get_uuid
 lvm_lv_get_name
+lvm_lv_get_size
 lvm_vg_create
 lvm_vg_extend
 lvm_vg_set_extent_size

liblvm/lvm.h

@@ -242,6 +242,21 @@ char *lvm_pv_get_name(const pv_t *pv);
 char *lvm_vg_get_name(const vg_t *vg);
 char *lvm_lv_get_name(const lv_t *lv);
 
+/**
+ * Get various pv, vg, or lv properties.
+ * For full description of each property, consult the man pages for pvs,
+ * vgs, and lvs.
+ * FIXME: What value to return for invalid handle or other errors?
+ */
+uint64_t lvm_pv_get_mda_count(const pv_t *pv);
+uint64_t lvm_vg_get_size(const vg_t *vg);
+uint64_t lvm_vg_get_free(const vg_t *vg);
+uint64_t lvm_vg_get_extent_size(const vg_t *vg);
+uint64_t lvm_vg_get_extent_count(const vg_t *vg);
+uint64_t lvm_vg_get_free_count(const vg_t *vg);
+uint64_t lvm_vg_get_pv_count(const vg_t *vg);
+uint64_t lvm_lv_get_size(const lv_t *lv);
+
 /**
  * Close a VG opened with lvm_vg_create
  *

liblvm/lvm_lv.c

@@ -20,6 +20,12 @@
 #include "segtype.h"
 #include <string.h>
 
+/* FIXME: have lib/report/report.c _disp function call lv_size()? */
+uint64_t lvm_lv_get_size(const lv_t *lv)
+{
+	return lv_size(lv);
+}
+
 char *lvm_lv_get_uuid(const lv_t *lv)
 {
 	char uuid[64] __attribute((aligned(8)));

liblvm/lvm_pv.c

@@ -38,3 +38,7 @@ char *lvm_pv_get_name(const pv_t *pv)
 	return name;
 }
 
+uint64_t lvm_pv_get_mda_count(const pv_t *pv)
+{
+	return (uint64_t) pv_mda_count(pv);
+}

liblvm/lvm_vg.c

@@ -190,6 +190,37 @@ struct dm_list *lvm_vg_list_lvs(vg_t *vg)
 	return list;
 }
 
+/* FIXME: invalid handle? return INTMAX? */
+uint64_t lvm_vg_get_size(const vg_t *vg)
+{
+	return vg_size(vg);
+}
+
+uint64_t lvm_vg_get_free(const vg_t *vg)
+{
+	return vg_free(vg);
+}
+
+uint64_t lvm_vg_get_extent_size(const vg_t *vg)
+{
+	return vg_extent_size(vg);
+}
+
+uint64_t lvm_vg_get_extent_count(const vg_t *vg)
+{
+	return vg_extent_count(vg);
+}
+
+uint64_t lvm_vg_get_free_count(const vg_t *vg)
+{
+	return vg_free_count(vg);
+}
+
+uint64_t lvm_vg_get_pv_count(const vg_t *vg)
+{
+	return vg_pv_count(vg);
+}
+
 char *lvm_vg_get_uuid(const vg_t *vg)
 {
 	char uuid[64] __attribute((aligned(8)));