From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21498 invoked by alias); 24 Jul 2009 12:47:16 -0000 Received: (qmail 21483 invoked by uid 9657); 24 Jul 2009 12:47:15 -0000 Date: Fri, 24 Jul 2009 12:47:00 -0000 Message-ID: <20090724124715.21481.qmail@sourceware.org> From: wysochanski@sourceware.org To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org Subject: LVM2/liblvm .exported_symbols lvm.h lvm_vg.c Mailing-List: contact lvm2-cvs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: lvm2-cvs-owner@sourceware.org X-SW-Source: 2009-07/txt/msg00130.txt.bz2 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 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); +}