[lvm-devel] [PATCH 1/4] Add lvseg_t to lvm2app and lvm_lv_list_lvsegs().
Dave Wysochanski
dwysocha at redhat.com
Tue Oct 19 13:24:53 UTC 2010
Signed-off-by: Dave Wysochanski <dwysocha at redhat.com>
---
liblvm/lvm2app.h | 31 +++++++++++++++++++++++++++++++
liblvm/lvm_lv.c | 27 +++++++++++++++++++++++++++
2 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/liblvm/lvm2app.h b/liblvm/lvm2app.h
index e90adf8..f6d54f1 100644
--- a/liblvm/lvm2app.h
+++ b/liblvm/lvm2app.h
@@ -95,6 +95,7 @@ struct lvm;
struct physical_volume;
struct volume_group;
struct logical_volume;
+struct lv_segment;
/**
* \class lvm_t
@@ -137,6 +138,13 @@ typedef struct logical_volume *lv_t;
typedef struct physical_volume *pv_t;
/**
+ * \class lvseg_t
+ *
+ * This lv segment object is bound to a lv_t.
+ */
+typedef struct lv_segment *lvseg_t;
+
+/**
* Logical Volume object list.
*
* Lists of these structures are returned by lvm_vg_list_lvs().
@@ -147,6 +155,16 @@ typedef struct lvm_lv_list {
} lv_list_t;
/**
+ * Logical Volume object list.
+ *
+ * Lists of these structures are returned by lvm_lv_list_lvsegs().
+ */
+typedef struct lvm_lvseg_list {
+ struct dm_list list;
+ lvseg_t lvseg;
+} lvseg_list_t;
+
+/**
* Physical volume object list.
*
* Lists of these structures are returned by lvm_vg_list_pvs().
@@ -933,6 +951,19 @@ struct lvm_property_value lvm_vg_get_property(const vg_t vg, const char *name);
lv_t lvm_vg_create_lv_linear(vg_t vg, const char *name, uint64_t size);
/**
+ * Return a list of lvseg handles for a given LV handle.
+ *
+ * \memberof lv_t
+ *
+ * \param lv
+ * Logical volume handle.
+ *
+ * \return
+ * A list of lvm_lvseg_list structures containing lvseg handles for this lv.
+ */
+struct dm_list *lvm_lv_list_lvsegs(lv_t lv);
+
+/**
* Activate a logical volume.
*
* \memberof lv_t
diff --git a/liblvm/lvm_lv.c b/liblvm/lvm_lv.c
index cef87f5..42982f9 100644
--- a/liblvm/lvm_lv.c
+++ b/liblvm/lvm_lv.c
@@ -216,6 +216,33 @@ int lvm_lv_deactivate(lv_t lv)
return 0;
}
+struct dm_list *lvm_lv_list_lvsegs(lv_t lv)
+{
+ struct dm_list *list;
+ lvseg_list_t *lvseg;
+ struct lv_segment *lvl;
+
+ if (dm_list_empty(&lv->segments))
+ return NULL;
+
+ if (!(list = dm_pool_zalloc(lv->vg->vgmem, sizeof(*list)))) {
+ log_errno(ENOMEM, "Memory allocation fail for dm_list.");
+ return NULL;
+ }
+ dm_list_init(list);
+
+ dm_list_iterate_items(lvl, &lv->segments) {
+ if (!(lvseg = dm_pool_zalloc(lv->vg->vgmem, sizeof(*lvseg)))) {
+ log_errno(ENOMEM,
+ "Memory allocation fail for lvm_lvseg_list.");
+ return NULL;
+ }
+ lvseg->lvseg = lvl;
+ dm_list_add(list, &lvseg->list);
+ }
+ return list;
+}
+
int lvm_lv_resize(const lv_t lv, uint64_t new_size)
{
/* FIXME: add lv resize code here */
--
1.7.2.2
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