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git://sourceware.org/git/lvm2.git
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c451d7925d
Correcting to log_print_unless_silent(), so -qq can do some work.
686 lines
19 KiB
C
686 lines
19 KiB
C
/*
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* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "base/memory/zalloc.h"
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#include "lib/misc/lib.h"
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#include "lib/format_text/format-text.h"
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#include "layout.h"
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#include "lib/label/label.h"
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#include "lib/mm/xlate.h"
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#include "lib/cache/lvmcache.h"
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#include <sys/stat.h>
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#include <fcntl.h>
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static int _text_can_handle(struct labeller *l __attribute__((unused)),
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void *buf,
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uint64_t sector __attribute__((unused)))
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{
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struct label_header *lh = (struct label_header *) buf;
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if (!memcmp(lh->type, LVM2_LABEL, sizeof(lh->type)))
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return 1;
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return 0;
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}
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struct _dl_setup_baton {
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struct disk_locn *pvh_dlocn_xl;
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struct device *dev;
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};
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static int _da_setup(struct disk_locn *da, void *baton)
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{
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struct _dl_setup_baton *p = baton;
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p->pvh_dlocn_xl->offset = xlate64(da->offset);
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p->pvh_dlocn_xl->size = xlate64(da->size);
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p->pvh_dlocn_xl++;
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return 1;
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}
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static int _ba_setup(struct disk_locn *ba, void *baton)
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{
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return _da_setup(ba, baton);
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}
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static int _mda_setup(struct metadata_area *mda, void *baton)
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{
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struct _dl_setup_baton *p = baton;
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struct mda_context *mdac = (struct mda_context *) mda->metadata_locn;
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if (mdac->area.dev != p->dev)
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return 1;
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p->pvh_dlocn_xl->offset = xlate64(mdac->area.start);
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p->pvh_dlocn_xl->size = xlate64(mdac->area.size);
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p->pvh_dlocn_xl++;
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return 1;
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}
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static int _dl_null_termination(void *baton)
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{
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struct _dl_setup_baton *p = baton;
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p->pvh_dlocn_xl->offset = xlate64(UINT64_C(0));
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p->pvh_dlocn_xl->size = xlate64(UINT64_C(0));
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p->pvh_dlocn_xl++;
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return 1;
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}
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static int _text_write(struct label *label, void *buf)
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{
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struct label_header *lh = (struct label_header *) buf;
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struct pv_header *pvhdr;
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struct pv_header_extension *pvhdr_ext;
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struct lvmcache_info *info;
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struct _dl_setup_baton baton;
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char buffer[64] __attribute__((aligned(8)));
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int ba1, da1, mda1, mda2;
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/*
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* PV header base
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*/
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/* FIXME Move to where label is created */
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memcpy(label->type, LVM2_LABEL, sizeof(label->type));
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memcpy(lh->type, LVM2_LABEL, sizeof(lh->type));
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pvhdr = (struct pv_header *) ((char *) buf + xlate32(lh->offset_xl));
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info = (struct lvmcache_info *) label->info;
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pvhdr->device_size_xl = xlate64(lvmcache_device_size(info));
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memcpy(pvhdr->pv_uuid, &lvmcache_device(info)->pvid, sizeof(struct id));
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if (!id_write_format((const struct id *)pvhdr->pv_uuid, buffer,
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sizeof(buffer))) {
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stack;
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buffer[0] = '\0';
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}
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baton.dev = lvmcache_device(info);
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baton.pvh_dlocn_xl = &pvhdr->disk_areas_xl[0];
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/* List of data areas (holding PEs) */
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lvmcache_foreach_da(info, _da_setup, &baton);
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_dl_null_termination(&baton);
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/* List of metadata area header locations */
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lvmcache_foreach_mda(info, _mda_setup, &baton);
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_dl_null_termination(&baton);
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/*
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* PV header extension
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*/
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pvhdr_ext = (struct pv_header_extension *) ((char *) baton.pvh_dlocn_xl);
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pvhdr_ext->version = xlate32(PV_HEADER_EXTENSION_VSN);
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pvhdr_ext->flags = xlate32(lvmcache_ext_flags(info));
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/* List of bootloader area locations */
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baton.pvh_dlocn_xl = &pvhdr_ext->bootloader_areas_xl[0];
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lvmcache_foreach_ba(info, _ba_setup, &baton);
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_dl_null_termination(&baton);
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/* Create debug message with ba, da and mda locations */
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ba1 = (xlate64(pvhdr_ext->bootloader_areas_xl[0].offset) ||
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xlate64(pvhdr_ext->bootloader_areas_xl[0].size)) ? 0 : -1;
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da1 = (xlate64(pvhdr->disk_areas_xl[0].offset) ||
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xlate64(pvhdr->disk_areas_xl[0].size)) ? 0 : -1;
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mda1 = da1 + 2;
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mda2 = mda1 + 1;
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if (!xlate64(pvhdr->disk_areas_xl[mda1].offset) &&
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!xlate64(pvhdr->disk_areas_xl[mda1].size))
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mda1 = mda2 = 0;
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else if (!xlate64(pvhdr->disk_areas_xl[mda2].offset) &&
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!xlate64(pvhdr->disk_areas_xl[mda2].size))
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mda2 = 0;
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log_debug_metadata("%s: Preparing PV label header %s size " FMTu64 " with"
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"%s%.*" PRIu64 "%s%.*" PRIu64 "%s"
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"%s%.*" PRIu64 "%s%.*" PRIu64 "%s"
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"%s%.*" PRIu64 "%s%.*" PRIu64 "%s"
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"%s%.*" PRIu64 "%s%.*" PRIu64 "%s",
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dev_name(lvmcache_device(info)), buffer, lvmcache_device_size(info),
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(ba1 > -1) ? " ba1 (" : "",
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(ba1 > -1) ? 1 : 0,
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(ba1 > -1) ? xlate64(pvhdr_ext->bootloader_areas_xl[ba1].offset) >> SECTOR_SHIFT : 0,
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(ba1 > -1) ? "s, " : "",
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(ba1 > -1) ? 1 : 0,
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(ba1 > -1) ? xlate64(pvhdr_ext->bootloader_areas_xl[ba1].size) >> SECTOR_SHIFT : 0,
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(ba1 > -1) ? "s)" : "",
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(da1 > -1) ? " da1 (" : "",
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(da1 > -1) ? 1 : 0,
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(da1 > -1) ? xlate64(pvhdr->disk_areas_xl[da1].offset) >> SECTOR_SHIFT : 0,
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(da1 > -1) ? "s, " : "",
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(da1 > -1) ? 1 : 0,
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(da1 > -1) ? xlate64(pvhdr->disk_areas_xl[da1].size) >> SECTOR_SHIFT : 0,
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(da1 > -1) ? "s)" : "",
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mda1 ? " mda1 (" : "",
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mda1 ? 1 : 0,
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mda1 ? xlate64(pvhdr->disk_areas_xl[mda1].offset) >> SECTOR_SHIFT : 0,
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mda1 ? "s, " : "",
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mda1 ? 1 : 0,
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mda1 ? xlate64(pvhdr->disk_areas_xl[mda1].size) >> SECTOR_SHIFT : 0,
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mda1 ? "s)" : "",
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mda2 ? " mda2 (" : "",
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mda2 ? 1 : 0,
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mda2 ? xlate64(pvhdr->disk_areas_xl[mda2].offset) >> SECTOR_SHIFT : 0,
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mda2 ? "s, " : "",
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mda2 ? 1 : 0,
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mda2 ? xlate64(pvhdr->disk_areas_xl[mda2].size) >> SECTOR_SHIFT : 0,
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mda2 ? "s)" : "");
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if (da1 < 0) {
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log_error(INTERNAL_ERROR "%s label header currently requires "
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"a data area.", dev_name(lvmcache_device(info)));
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return 0;
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}
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return 1;
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}
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int add_da(struct dm_pool *mem, struct dm_list *das,
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uint64_t start, uint64_t size)
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{
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struct data_area_list *dal;
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if (!mem) {
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if (!(dal = malloc(sizeof(*dal)))) {
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log_error("struct data_area_list allocation failed");
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return 0;
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}
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} else {
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if (!(dal = dm_pool_alloc(mem, sizeof(*dal)))) {
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log_error("struct data_area_list allocation failed");
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return 0;
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}
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}
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dal->disk_locn.offset = start;
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dal->disk_locn.size = size;
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dm_list_add(das, &dal->list);
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return 1;
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}
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void del_das(struct dm_list *das)
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{
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struct dm_list *dah, *tmp;
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struct data_area_list *da;
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dm_list_iterate_safe(dah, tmp, das) {
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da = dm_list_item(dah, struct data_area_list);
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dm_list_del(&da->list);
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free(da);
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}
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}
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int add_ba(struct dm_pool *mem, struct dm_list *eas,
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uint64_t start, uint64_t size)
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{
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return add_da(mem, eas, start, size);
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}
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void del_bas(struct dm_list *bas)
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{
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del_das(bas);
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}
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int add_mda(const struct format_type *fmt, struct dm_pool *mem, struct dm_list *mdas,
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struct device *dev, uint64_t start, uint64_t size, unsigned ignored,
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struct metadata_area **mda_new)
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{
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struct metadata_area *mdal, *mda;
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struct mda_lists *mda_lists = (struct mda_lists *) fmt->private;
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struct mda_context *mdac, *mdac2;
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if (!mem) {
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if (!(mdal = malloc(sizeof(struct metadata_area)))) {
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log_error("struct mda_list allocation failed");
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return 0;
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}
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if (!(mdac = malloc(sizeof(struct mda_context)))) {
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log_error("struct mda_context allocation failed");
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free(mdal);
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return 0;
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}
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} else {
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if (!(mdal = dm_pool_alloc(mem, sizeof(struct metadata_area)))) {
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log_error("struct mda_list allocation failed");
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return 0;
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}
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if (!(mdac = dm_pool_alloc(mem, sizeof(struct mda_context)))) {
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log_error("struct mda_context allocation failed");
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return 0;
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}
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}
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mdal->ops = mda_lists->raw_ops;
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mdal->metadata_locn = mdac;
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mdac->area.dev = dev;
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mdac->area.start = start;
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mdac->area.size = size;
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mdac->free_sectors = UINT64_C(0);
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memset(&mdac->rlocn, 0, sizeof(mdac->rlocn));
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/* Set MDA_PRIMARY only if this is the first metadata area on this device. */
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mdal->status = MDA_PRIMARY;
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dm_list_iterate_items(mda, mdas) {
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mdac2 = mda->metadata_locn;
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if (mdac2->area.dev == dev) {
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mdal->status = 0;
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break;
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}
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}
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mda_set_ignored(mdal, ignored);
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dm_list_add(mdas, &mdal->list);
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if (mda_new)
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*mda_new = mdal;
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return 1;
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}
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void del_mdas(struct dm_list *mdas)
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{
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struct dm_list *mdah, *tmp;
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struct metadata_area *mda;
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dm_list_iterate_safe(mdah, tmp, mdas) {
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mda = dm_list_item(mdah, struct metadata_area);
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free(mda->metadata_locn);
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dm_list_del(&mda->list);
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free(mda);
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}
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}
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static int _text_initialise_label(struct labeller *l __attribute__((unused)),
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struct label *label)
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{
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memcpy(label->type, LVM2_LABEL, sizeof(label->type));
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return 1;
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}
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static int _read_mda_header_and_metadata(const struct format_type *fmt,
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struct metadata_area *mda,
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struct lvmcache_vgsummary *vgsummary,
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uint32_t *bad_fields)
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{
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struct mda_context *mdac = (struct mda_context *) mda->metadata_locn;
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struct mda_header *mdah;
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int retries = 0;
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retry:
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if (!(mdah = raw_read_mda_header(fmt, &mdac->area, (mda->mda_num == 1), 0, bad_fields))) {
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log_warn("WARNING: bad metadata header on %s at %llu.",
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dev_name(mdac->area.dev),
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(unsigned long long)mdac->area.start);
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mda->header_start = mdac->area.start;
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*bad_fields |= BAD_MDA_HEADER;
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return 0;
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}
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mda->header_start = mdah->start;
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mda_set_ignored(mda, rlocn_is_ignored(mdah->raw_locns));
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if (mda_is_ignored(mda)) {
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log_debug_metadata("Ignoring mda on device %s at offset " FMTu64,
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dev_name(mdac->area.dev),
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mdac->area.start);
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vgsummary->mda_ignored = 1;
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return 1;
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}
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if (!read_metadata_location_summary(fmt, mda, mdah, mda_is_primary(mda), &mdac->area,
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vgsummary, &mdac->free_sectors)) {
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if (vgsummary->zero_offset)
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return 1;
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/*
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* This code is used by label_scan to get a summary of the
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* VG metadata that will be properly read later by vg_read.
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* The initial read of this device during label_scan
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* populates bcache with the first 128K of data from the
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* device. That block of data contains the mda_header
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* (at 4k) but will often not include the metadata text,
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* which is often located further into the metadata area
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* (beyond the 128K block saved in bcache.)
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* So read_metadata_location_summary will usually get the
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* mda_header from bcache which was read initially, and
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* then it will often need to do a new disk read to get
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* the actual metadata text that the mda_header points to.
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* Since there is no locking around label_scan, it's
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* possible (but very rare) that the entire metadata area
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* can be rewritten by other commands between the time that
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* this command read the mda_header and the time that it
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* reads the metadata text. This means the expected metadata
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* text isn't found, and an error is returned here.
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* To handle this, invalidate all data in bcache for this
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* device and reread the mda_header and metadata text back to
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* back, so inconsistency is less likely (without locking
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* there's no guarantee, e.g. if the command is blocked
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* somehow between the two reads.)
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*/
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if (!retries) {
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log_print_unless_silent("Retrying metadata scan.");
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retries++;
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dev_invalidate(mdac->area.dev);
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goto retry;
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}
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log_warn("WARNING: bad metadata text on %s in mda%d",
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dev_name(mdac->area.dev), mda->mda_num);
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*bad_fields |= BAD_MDA_TEXT;
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return 0;
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}
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return 1;
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}
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/*
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* Used by label_scan to get a summary of the VG that exists on this PV. This
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* summary is stored in lvmcache vginfo/info/info->mdas and is used later by
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* vg_read which needs to know which PVs to read for a given VG name, and where
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* the metadata is at for those PVs.
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*/
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static int _text_read(struct cmd_context *cmd, struct labeller *labeller, struct device *dev, void *label_buf,
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uint64_t label_sector, int *is_duplicate)
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{
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struct lvmcache_vgsummary vgsummary;
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char pvid[ID_LEN + 1] __attribute__((aligned(8))) = { 0 };
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char vgid[ID_LEN + 1] __attribute__((aligned(8))) = { 0 };
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struct lvmcache_info *info;
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const struct format_type *fmt = labeller->fmt;
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struct label_header *lh = (struct label_header *) label_buf;
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struct pv_header *pvhdr;
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struct pv_header_extension *pvhdr_ext;
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struct metadata_area *mda = NULL;
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struct metadata_area *mda1 = NULL;
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struct metadata_area *mda2 = NULL;
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struct disk_locn *dlocn_xl;
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uint64_t offset;
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uint32_t ext_version;
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uint32_t bad_fields;
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int mda_count = 0;
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int good_mda_count = 0;
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int bad_mda_count = 0;
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int rv1, rv2;
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/*
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* PV header base
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*/
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pvhdr = (struct pv_header *) ((char *) label_buf + xlate32(lh->offset_xl));
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memcpy(pvid, &pvhdr->pv_uuid, ID_LEN);
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strncpy(vgid, FMT_TEXT_ORPHAN_VG_NAME, ID_LEN);
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/*
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* FIXME: stop adding the device to lvmcache initially as an orphan
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* (and then moving it later) and instead just add it when we know the
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* VG.
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*
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* If another device with this same PVID has already been seen,
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* lvmcache_add will put this device in the duplicates list in lvmcache
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* and return NULL. At the end of label_scan, the duplicate devs are
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* compared, and if another dev is preferred for this PV, then the
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* existing dev is removed from lvmcache and _text_read is called again
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* for this dev, and lvmcache_add will add it.
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*
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* Other reasons for lvmcache_add to return NULL are internal errors.
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*/
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if (!(info = lvmcache_add(cmd, labeller, pvid, dev, label_sector,
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vgid,
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vgid, 0, is_duplicate)))
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return_0;
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lvmcache_set_device_size(info, xlate64(pvhdr->device_size_xl));
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lvmcache_del_das(info);
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lvmcache_del_mdas(info);
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lvmcache_del_bas(info);
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|
|
/* Data areas holding the PEs */
|
|
dlocn_xl = pvhdr->disk_areas_xl;
|
|
while ((offset = xlate64(dlocn_xl->offset))) {
|
|
lvmcache_add_da(info, offset, xlate64(dlocn_xl->size));
|
|
dlocn_xl++;
|
|
}
|
|
|
|
dlocn_xl++;
|
|
|
|
/* Metadata areas */
|
|
while ((offset = xlate64(dlocn_xl->offset))) {
|
|
|
|
/*
|
|
* This just calls add_mda() above, replacing info with info->mdas.
|
|
*/
|
|
lvmcache_add_mda(info, dev, offset, xlate64(dlocn_xl->size), 0, &mda);
|
|
|
|
dlocn_xl++;
|
|
mda_count++;
|
|
|
|
if (mda_count == 1) {
|
|
mda1 = mda;
|
|
mda1->mda_num = 1;
|
|
}
|
|
else if (mda_count == 2) {
|
|
mda2 = mda;
|
|
mda2->mda_num = 2;
|
|
}
|
|
}
|
|
|
|
dlocn_xl++;
|
|
|
|
/*
|
|
* PV header extension
|
|
*/
|
|
pvhdr_ext = (struct pv_header_extension *) ((char *) dlocn_xl);
|
|
if (!(ext_version = xlate32(pvhdr_ext->version)))
|
|
goto scan_mdas;
|
|
|
|
if (ext_version != PV_HEADER_EXTENSION_VSN)
|
|
log_debug_metadata("Found pv_header_extension version " FMTu32 " on %s",
|
|
ext_version, dev_name(dev));
|
|
|
|
/* Extension version */
|
|
lvmcache_set_ext_version(info, xlate32(pvhdr_ext->version));
|
|
|
|
/* Extension flags */
|
|
lvmcache_set_ext_flags(info, xlate32(pvhdr_ext->flags));
|
|
|
|
/* Bootloader areas */
|
|
dlocn_xl = pvhdr_ext->bootloader_areas_xl;
|
|
while ((offset = xlate64(dlocn_xl->offset))) {
|
|
lvmcache_add_ba(info, offset, xlate64(dlocn_xl->size));
|
|
dlocn_xl++;
|
|
}
|
|
|
|
scan_mdas:
|
|
if (!mda_count) {
|
|
log_debug_metadata("Scanning %s found no mdas.", dev_name(dev));
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Track which devs have bad metadata so repair can find them (even if
|
|
* this dev also has good metadata that we are able to use).
|
|
*
|
|
* When bad metadata is seen, the unusable mda struct is removed from
|
|
* lvmcache info->mdas. This means that vg_read and vg_write will skip
|
|
* the bad mda not try to read or write the bad metadata. The bad mdas
|
|
* are saved in a separate bad_mdas list in lvmcache so that repair can
|
|
* find them to repair.
|
|
*/
|
|
|
|
if (mda1) {
|
|
log_debug_metadata("Scanning %s mda1 summary.", dev_name(dev));
|
|
memset(&vgsummary, 0, sizeof(vgsummary));
|
|
dm_list_init(&vgsummary.pvsummaries);
|
|
bad_fields = 0;
|
|
vgsummary.mda_num = 1;
|
|
|
|
rv1 = _read_mda_header_and_metadata(fmt, mda1, &vgsummary, &bad_fields);
|
|
|
|
if (rv1 && !vgsummary.zero_offset && !vgsummary.mda_ignored) {
|
|
if (!lvmcache_update_vgname_and_id(cmd, info, &vgsummary)) {
|
|
/* I believe this is only an internal error. */
|
|
|
|
dm_list_del(&mda1->list);
|
|
|
|
/* Are there other cases besides mismatch and internal error? */
|
|
if (vgsummary.mismatch) {
|
|
log_warn("WARNING: Scanning %s mda1 found mismatch with other metadata.", dev_name(dev));
|
|
bad_fields |= BAD_MDA_MISMATCH;
|
|
} else {
|
|
log_warn("WARNING: Scanning %s mda1 failed to save internal summary.", dev_name(dev));
|
|
bad_fields |= BAD_MDA_INTERNAL;
|
|
}
|
|
mda1->bad_fields = bad_fields;
|
|
lvmcache_save_bad_mda(info, mda1);
|
|
mda1 = NULL;
|
|
bad_mda_count++;
|
|
} else {
|
|
/* The normal success path */
|
|
log_debug("Found metadata seqno %u in mda1 on %s", vgsummary.seqno, dev_name(dev));
|
|
good_mda_count++;
|
|
}
|
|
}
|
|
|
|
if (!rv1) {
|
|
/*
|
|
* Remove the bad mda from normal mda list so it's not
|
|
* used by vg_read/vg_write, but keep track of it in
|
|
* lvmcache for repair.
|
|
*/
|
|
log_warn("WARNING: scanning %s mda1 failed to read metadata summary.", dev_name(dev));
|
|
log_warn("WARNING: repair VG metadata on %s with vgck --updatemetadata.", dev_name(dev));
|
|
|
|
dm_list_del(&mda1->list);
|
|
mda1->bad_fields = bad_fields;
|
|
lvmcache_save_bad_mda(info, mda1);
|
|
mda1 = NULL;
|
|
bad_mda_count++;
|
|
}
|
|
}
|
|
|
|
if (mda2) {
|
|
log_debug_metadata("Scanning %s mda2 summary.", dev_name(dev));
|
|
memset(&vgsummary, 0, sizeof(vgsummary));
|
|
dm_list_init(&vgsummary.pvsummaries);
|
|
bad_fields = 0;
|
|
vgsummary.mda_num = 2;
|
|
|
|
rv2 = _read_mda_header_and_metadata(fmt, mda2, &vgsummary, &bad_fields);
|
|
|
|
if (rv2 && !vgsummary.zero_offset && !vgsummary.mda_ignored) {
|
|
if (!lvmcache_update_vgname_and_id(cmd, info, &vgsummary)) {
|
|
dm_list_del(&mda2->list);
|
|
|
|
/* Are there other cases besides mismatch and internal error? */
|
|
if (vgsummary.mismatch) {
|
|
log_warn("WARNING: Scanning %s mda2 found mismatch with other metadata.", dev_name(dev));
|
|
bad_fields |= BAD_MDA_MISMATCH;
|
|
} else {
|
|
log_warn("WARNING: Scanning %s mda2 failed to save internal summary.", dev_name(dev));
|
|
bad_fields |= BAD_MDA_INTERNAL;
|
|
}
|
|
|
|
mda2->bad_fields = bad_fields;
|
|
lvmcache_save_bad_mda(info, mda2);
|
|
mda2 = NULL;
|
|
bad_mda_count++;
|
|
} else {
|
|
/* The normal success path */
|
|
log_debug("Found metadata seqno %u in mda2 on %s", vgsummary.seqno, dev_name(dev));
|
|
good_mda_count++;
|
|
}
|
|
}
|
|
|
|
if (!rv2) {
|
|
/*
|
|
* Remove the bad mda from normal mda list so it's not
|
|
* used by vg_read/vg_write, but keep track of it in
|
|
* lvmcache for repair.
|
|
*/
|
|
log_warn("WARNING: scanning %s mda2 failed to read metadata summary.", dev_name(dev));
|
|
log_warn("WARNING: repair VG metadata on %s with vgck --updatemetadata.", dev_name(dev));
|
|
|
|
dm_list_del(&mda2->list);
|
|
mda2->bad_fields = bad_fields;
|
|
lvmcache_save_bad_mda(info, mda2);
|
|
mda2 = NULL;
|
|
bad_mda_count++;
|
|
}
|
|
}
|
|
|
|
if (good_mda_count)
|
|
return 1;
|
|
|
|
if (bad_mda_count)
|
|
return 0;
|
|
|
|
/* no metadata in the mdas */
|
|
return 1;
|
|
}
|
|
|
|
static void _text_destroy_label(struct labeller *l __attribute__((unused)),
|
|
struct label *label)
|
|
{
|
|
struct lvmcache_info *info = (struct lvmcache_info *) label->info;
|
|
|
|
lvmcache_del_mdas(info);
|
|
lvmcache_del_das(info);
|
|
lvmcache_del_bas(info);
|
|
}
|
|
|
|
static void _fmt_text_destroy(struct labeller *l)
|
|
{
|
|
free(l);
|
|
}
|
|
|
|
struct label_ops _text_ops = {
|
|
.can_handle = _text_can_handle,
|
|
.write = _text_write,
|
|
.read = _text_read,
|
|
.initialise_label = _text_initialise_label,
|
|
.destroy_label = _text_destroy_label,
|
|
.destroy = _fmt_text_destroy,
|
|
};
|
|
|
|
struct labeller *text_labeller_create(const struct format_type *fmt)
|
|
{
|
|
struct labeller *l;
|
|
|
|
if (!(l = zalloc(sizeof(*l)))) {
|
|
log_error("Couldn't allocate labeller object.");
|
|
return NULL;
|
|
}
|
|
|
|
l->ops = &_text_ops;
|
|
l->fmt = fmt;
|
|
|
|
return l;
|
|
}
|