[lvm-devel] LVM2/liblvm .exported_symbols lvm.h lvm_vg.c
wysochanski at sourceware.org
wysochanski at sourceware.org
Thu Jul 23 23:39:03 UTC 2009
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: wysochanski at sourceware.org 2009-07-23 23:39:02
Modified files:
liblvm : .exported_symbols lvm.h lvm_vg.c
Log message:
Add lvm_vg_list_{pvs|lvs} - return lists of pv/lv handles for a vg.
- Use vgmem pool to allocate a list of lvm_*_list structs
- Allocate a new list each call (list may have changed since last call)
- Add to liblvm's exported symbols
Signed-off-by: Dave Wysochanski <dwysocha at redhat.com>
Acked-by: Thomas Woerner <twoerner at redhat.com>
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/.exported_symbols.diff?cvsroot=lvm2&r1=1.4&r2=1.5
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm.h.diff?cvsroot=lvm2&r1=1.8&r2=1.9
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_vg.c.diff?cvsroot=lvm2&r1=1.4&r2=1.5
--- LVM2/liblvm/.exported_symbols 2009/07/22 22:24:16 1.4
+++ LVM2/liblvm/.exported_symbols 2009/07/23 23:39:02 1.5
@@ -10,3 +10,5 @@
lvm_vg_remove
lvm_errno
lvm_errmsg
+lvm_vg_list_pvs
+lvm_vg_list_lvs
--- LVM2/liblvm/lvm.h 2009/07/23 23:37:24 1.8
+++ LVM2/liblvm/lvm.h 2009/07/23 23:39:02 1.9
@@ -44,6 +44,13 @@
lv_t *lv;
} lv_list_t;
+/**
+ * Return a list of LV handles for a given VG handle.
+ *
+ * \return A list of lv_list_t structures containing lv handles for this vg.
+ * If no LVs exist on the given VG, NULL is returned.
+ */
+struct dm_list *lvm_vg_list_lvs(vg_t *vg);
struct lvm; /* internal data */
@@ -225,4 +232,12 @@
vg_t *lvm_vg_open(lvm_t libh, const char *vgname, const char *mode,
uint32_t flags);
+/**
+ * Return a list of PV handles for a given VG handle.
+ *
+ * \return A list of pv_list_t structures containing pv handles for this vg.
+ * If no PVs exist on the given VG, NULL is returned.
+ */
+struct dm_list *lvm_vg_list_pvs(vg_t *vg);
+
#endif /* _LIB_LVM_H */
--- LVM2/liblvm/lvm_vg.c 2009/07/23 01:20:22 1.4
+++ LVM2/liblvm/lvm_vg.c 2009/07/23 23:39:02 1.5
@@ -114,3 +114,55 @@
return vg;
}
+
+struct dm_list *lvm_vg_list_pvs(vg_t *vg)
+{
+ struct dm_list *list;
+ pv_list_t *pvs;
+ struct pv_list *pvl;
+
+ if (dm_list_empty(&vg->pvs))
+ return NULL;
+
+ if (!(list = dm_pool_zalloc(vg->vgmem, sizeof(*list)))) {
+ log_error("Memory allocation fail for dm_list.\n");
+ return NULL;
+ }
+ dm_list_init(list);
+
+ dm_list_iterate_items(pvl, &vg->pvs) {
+ if (!(pvs = dm_pool_zalloc(vg->vgmem, sizeof(*pvs)))) {
+ log_error("Memory allocation fail for lvm_pv_list.\n");
+ return NULL;
+ }
+ pvs->pv = pvl->pv;
+ dm_list_add(list, &pvs->list);
+ }
+ return list;
+}
+
+struct dm_list *lvm_vg_list_lvs(vg_t *vg)
+{
+ struct dm_list *list;
+ lv_list_t *lvs;
+ struct lv_list *lvl;
+
+ if (dm_list_empty(&vg->lvs))
+ return NULL;
+
+ if (!(list = dm_pool_zalloc(vg->vgmem, sizeof(*list)))) {
+ log_error("Memory allocation fail for dm_list.\n");
+ return NULL;
+ }
+ dm_list_init(list);
+
+ dm_list_iterate_items(lvl, &vg->lvs) {
+ if (!(lvs = dm_pool_zalloc(vg->vgmem, sizeof(*lvs)))) {
+ log_error("Memory allocation fail for lvm_lv_list.\n");
+ return NULL;
+ }
+ lvs->lv = lvl->lv;
+ dm_list_add(list, &lvs->list);
+ }
+ return list;
+}
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