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LVM2/liblvm .exported_symbols lvm.h lvm_vg.c
- From: wysochanski at sourceware dot org
- To: lvm-devel at redhat dot com, lvm2-cvs at sourceware dot org
- Date: 24 Jul 2009 12:47:15 -0000
- Subject: LVM2/liblvm .exported_symbols lvm.h lvm_vg.c
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: wysochanski@sourceware.org 2009-07-24 12:47:15
Modified files:
liblvm : .exported_symbols lvm.h lvm_vg.c
Log message:
Add lvm_list_vg_names and lvm_list_vg_ids liblvm functions.
These functions provide the capability of enumerating all vgnames and
vgids in the system. They do not do a scan of the system.
Author: Dave Wysochanski <dwysocha@redhat.com>
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/.exported_symbols.diff?cvsroot=lvm2&r1=1.6&r2=1.7
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm.h.diff?cvsroot=lvm2&r1=1.10&r2=1.11
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_vg.c.diff?cvsroot=lvm2&r1=1.6&r2=1.7
--- LVM2/liblvm/.exported_symbols 2009/07/23 23:40:05 1.6
+++ LVM2/liblvm/.exported_symbols 2009/07/24 12:47:15 1.7
@@ -18,3 +18,5 @@
lvm_errmsg
lvm_vg_list_pvs
lvm_vg_list_lvs
+lvm_list_vg_names
+lvm_list_vg_ids
--- LVM2/liblvm/lvm.h 2009/07/23 23:40:05 1.10
+++ LVM2/liblvm/lvm.h 2009/07/24 12:47:15 1.11
@@ -44,6 +44,11 @@
lv_t *lv;
} lv_list_t;
+struct lvm_str_list {
+ struct dm_list list;
+ const char *str;
+};
+
/**
* Return a list of LV handles for a given VG handle.
*
@@ -256,4 +261,30 @@
*/
struct dm_list *lvm_vg_list_pvs(vg_t *vg);
+/**
+ * Return a list of VG names or VG uuids in the system.
+ *
+ * NOTE: This function will _NOT_ scan devices in the system for LVM metadata.
+ * To process the list, use the dm_list iterator functions. For example:
+ * vg_t *vg;
+ * struct dm_list *vgnames;
+ * struct lvm_str_list *strl;
+ *
+ * vgnames = lvm_list_vg_names(libh);
+ * dm_list_iterate_items(strl, vgnames) {
+ * vgname = strl->str;
+ * vg = lvm_vg_open(libh, vgname, "r");
+ * // do something with vg
+ * lvm_vg_close(vg);
+ * }
+ *
+ *
+ * \return A list of struct lvm_str_list
+ * If no VGs exist on the system, NULL is returned.
+ * FIXME: handle list memory cleanup
+ */
+struct dm_list *lvm_list_vg_names(lvm_t libh);
+struct dm_list *lvm_list_vg_ids(lvm_t libh);
+
+
#endif /* _LIB_LVM_H */
--- LVM2/liblvm/lvm_vg.c 2009/07/23 23:40:05 1.6
+++ LVM2/liblvm/lvm_vg.c 2009/07/24 12:47:15 1.7
@@ -188,3 +188,13 @@
name[NAME_LEN] = '\0';
return name;
}
+
+struct dm_list *lvm_list_vg_names(lvm_t libh)
+{
+ return get_vgnames((struct cmd_context *)libh, 0);
+}
+
+struct dm_list *lvm_list_vg_ids(lvm_t libh)
+{
+ return get_vgids((struct cmd_context *)libh, 0);
+}