From b2b27cd7f437273fda695f45d8e45732677b39c5 Mon Sep 17 00:00:00 2001 From: Petr Rockai Date: Wed, 17 Nov 2010 20:10:42 +0000 Subject: [PATCH] Add a new type and function to lvm2app to enumerate pvsegs. Signed-off-by: Dave Wysochanski Reviewed-by: Petr Rockai --- liblvm/lvm2app.h | 31 +++++++++++++++++++++++++++++++ liblvm/lvm_pv.c | 27 +++++++++++++++++++++++++++ 2 files changed, 58 insertions(+) diff --git a/liblvm/lvm2app.h b/liblvm/lvm2app.h index 1158bc5e9..b9c70d6c3 100644 --- a/liblvm/lvm2app.h +++ b/liblvm/lvm2app.h @@ -96,6 +96,7 @@ struct physical_volume; struct volume_group; struct logical_volume; struct lv_segment; +struct pv_segment; /** * \class lvm_t @@ -144,6 +145,13 @@ typedef struct physical_volume *pv_t; */ typedef struct lv_segment *lvseg_t; +/** + * \class pvseg_t + * + * This pv segment object is bound to a pv_t. + */ +typedef struct pv_segment *pvseg_t; + /** * Logical Volume object list. * @@ -174,6 +182,16 @@ typedef struct lvm_pv_list { pv_t pv; } pv_list_t; +/** + * Physical Volume Segment object list. + * + * Lists of these structures are returned by lvm_pv_list_pvsegs(). + */ +typedef struct lvm_pvseg_list { + struct dm_list list; + pvseg_t pvseg; +} pvseg_list_t; + /** * String list. * @@ -1418,6 +1436,19 @@ uint64_t lvm_pv_get_free(const pv_t pv); */ struct lvm_property_value lvm_pv_get_property(const pv_t pv, const char *name); +/** + * Return a list of pvseg handles for a given PV handle. + * + * \memberof pv_t + * + * \param pv + * Physical volume handle. + * + * \return + * A list of lvm_pvseg_list structures containing pvseg handles for this pv. + */ +struct dm_list *lvm_pv_list_pvsegs(pv_t pv); + /** * Resize physical volume to new_size bytes. * diff --git a/liblvm/lvm_pv.c b/liblvm/lvm_pv.c index 6705dd818..aaaca9229 100644 --- a/liblvm/lvm_pv.c +++ b/liblvm/lvm_pv.c @@ -54,6 +54,33 @@ struct lvm_property_value lvm_pv_get_property(const pv_t pv, const char *name) return get_property(pv, NULL, NULL, NULL, name); } +struct dm_list *lvm_pv_list_pvsegs(pv_t pv) +{ + struct dm_list *list; + pvseg_list_t *pvseg; + struct pv_segment *pvl; + + if (dm_list_empty(&pv->segments)) + return NULL; + + if (!(list = dm_pool_zalloc(pv->vg->vgmem, sizeof(*list)))) { + log_errno(ENOMEM, "Memory allocation fail for dm_list."); + return NULL; + } + dm_list_init(list); + + dm_list_iterate_items(pvl, &pv->segments) { + if (!(pvseg = dm_pool_zalloc(pv->vg->vgmem, sizeof(*pvseg)))) { + log_errno(ENOMEM, + "Memory allocation fail for lvm_pvseg_list."); + return NULL; + } + pvseg->pvseg = pvl; + dm_list_add(list, &pvseg->list); + } + return list; +} + int lvm_pv_resize(const pv_t pv, uint64_t new_size) { /* FIXME: add pv resize code here */ -- 2.43.5