mirror of
git://sourceware.org/git/lvm2.git
synced 2024-10-28 20:25:52 +03:00
add7dc2d5a
onto a new device). uuid specified must not already exist on the system. o More message tidying. o When checking for label, only read PV metadata. o Add ataraid. [Needs moving into config/defaults files.]
146 lines
2.4 KiB
C
146 lines
2.4 KiB
C
/*
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* Copyright (C) 2002 Sistina Software (UK) Limited.
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*
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* This file is released under the LGPL.
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*/
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#include "lvm1_label.h"
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#include "dbg_malloc.h"
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#include "disk-rep.h"
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#include "log.h"
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#include "label.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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static void _not_supported(const char *op)
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{
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log_err("The '%s' operation is not supported for the lvm1 labeller.",
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op);
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}
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static int _can_handle(struct labeller *l, struct device *dev)
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{
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struct pv_disk pvd;
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int r;
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if (!dev_open(dev, O_RDONLY)) {
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stack;
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return 0;
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}
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r = read_pvd(dev, &pvd);
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if (!dev_close(dev))
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stack;
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return r;
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}
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static int _write(struct labeller *l,
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struct device *dev, struct label *label)
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{
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_not_supported("write");
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return 0;
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}
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static int _remove(struct labeller *l, struct device *dev)
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{
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_not_supported("remove");
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return 0;
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}
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static struct label *_to_label(struct pv_disk *pvd)
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{
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struct label *l;
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struct lvm_label_info *info;
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if (!(l = dbg_malloc(sizeof(*l)))) {
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log_err("Couldn't allocate label.");
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return NULL;
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}
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if (!(info = (struct lvm_label_info *) dbg_strdup(pvd->vg_name))) {
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dbg_free(l);
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return NULL;
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}
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memcpy(&l->id, &pvd->pv_uuid, sizeof(l->id));
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strcpy(l->volume_type, "lvm");
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l->version[0] = 1;
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l->version[0] = 0;
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l->version[0] = 0;
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l->extra_info = info;
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return l;
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}
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static int _read(struct labeller *l, struct device *dev, struct label **label)
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{
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struct pv_disk pvd;
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int r = 0;
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if (!dev_open(dev, O_RDONLY)) {
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stack;
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return 0;
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}
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r = read_pvd(dev, &pvd);
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if (!dev_close(dev))
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stack;
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if (!r) {
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stack;
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return 0;
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}
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/*
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* Convert the disk_list into a label structure.
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*/
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if (!(*label = _to_label(&pvd))) {
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stack;
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return 0;
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}
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return 1;
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}
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static void _destroy_label(struct labeller *l, struct label *label)
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{
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dbg_free(label->extra_info);
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dbg_free(label);
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}
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static void _destroy(struct labeller *l)
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{
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dbg_free(l);
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}
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struct label_ops _lvm1_ops = {
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can_handle: _can_handle,
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write: _write,
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remove: _remove,
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read: _read,
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verify: _can_handle,
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destroy_label: _destroy_label,
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destroy: _destroy
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};
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struct labeller *lvm1_labeller_create(void)
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{
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struct labeller *l;
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if (!(l = dbg_malloc(sizeof(*l)))) {
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log_err("Couldn't allocate labeller object.");
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return NULL;
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}
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l->ops = &_lvm1_ops;
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l->private = NULL;
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return l;
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}
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