C++ (Cpp) __fdisk_context_switch_label Examples

Example #1

File: label.c Project: azat-archive/util-linux

/**
 * fdisk_create_disklabel:
 * @cxt: fdisk context
 * @name: label name
 *
 * Creates a new disk label of type @name. If @name is NULL, then it
 * will create a default system label type, either SUN or DOS.
 *
 * Returns 0 on success, otherwise, a corresponding error.
 */
int fdisk_create_disklabel(struct fdisk_context *cxt, const char *name)
{
	int haslabel = 0;
	struct fdisk_label *lb;

	if (!cxt)
		return -EINVAL;

	if (!name) { /* use default label creation */
#ifdef __sparc__
		name = "sun";
#else
		name = "dos";
#endif
	}

	if (cxt->label) {
		fdisk_deinit_label(cxt->label);
		haslabel = 1;
	}

	lb = fdisk_context_get_label(cxt, name);
	if (!lb || lb->disabled)
		return -EINVAL;
	if (!lb->op->create)
		return -ENOSYS;

	__fdisk_context_switch_label(cxt, lb);

	if (haslabel && !cxt->parent)
		fdisk_reset_device_properties(cxt);

	DBG(CXT, ul_debugobj(cxt, "create a new %s label", lb->name));
	return cxt->label->op->create(cxt);
}

Example #2

File: context.c Project: Kynde/util-linux

struct fdisk_context *fdisk_new_nested_context(struct fdisk_context *parent,
				const char *name)
{
	struct fdisk_context *cxt;
	struct fdisk_label *lb = NULL;

	assert(parent);

	cxt = calloc(1, sizeof(*cxt));
	if (!cxt)
		return NULL;

	DBG(LABEL, dbgprint("new context %p allocated", cxt));
	cxt->dev_fd = parent->dev_fd;
	cxt->parent = parent;

	cxt->io_size =          parent->io_size;
	cxt->optimal_io_size =  parent->optimal_io_size;
	cxt->min_io_size =      parent->min_io_size;
	cxt->phy_sector_size =  parent->phy_sector_size;
	cxt->sector_size =      parent->sector_size;
	cxt->alignment_offset = parent->alignment_offset;
	cxt->grain =            parent->grain;
	cxt->first_lba =        parent->first_lba;
	cxt->total_sectors =    parent->total_sectors;
	cxt->firstsector =	parent->firstsector;

	cxt->ask_cb =		parent->ask_cb;
	cxt->ask_data =		parent->ask_data;

	cxt->geom = parent->geom;

	if (name) {
		if (strcmp(name, "bsd") == 0)
			lb = cxt->labels[ cxt->nlabels++ ] = fdisk_new_bsd_label(cxt);
		else if (strcmp(name, "dos") == 0)
			lb = cxt->labels[ cxt->nlabels++ ] = fdisk_new_dos_label(cxt);
	}

	if (lb) {
		DBG(LABEL, dbgprint("probing for nested %s", lb->name));

		cxt->label = lb;

		if (lb->op->probe(cxt) == 1)
			__fdisk_context_switch_label(cxt, lb);
		else {
			DBG(LABEL, dbgprint("not found %s label", lb->name));
			if (lb->op->deinit)
				lb->op->deinit(lb);
			cxt->label = NULL;
		}
	}

	return cxt;
}

Example #3

File: label.c Project: azat-archive/util-linux

/*
 * Don't use this function derectly, use fdisk_new_context_from_filename()
 */
int fdisk_probe_labels(struct fdisk_context *cxt)
{
	size_t i;

	cxt->label = NULL;

	for (i = 0; i < cxt->nlabels; i++) {
		struct fdisk_label *lb = cxt->labels[i];
		struct fdisk_label *org = cxt->label;
		int rc;

		if (!lb->op->probe)
			continue;
		if (lb->disabled) {
			DBG(CXT, ul_debugobj(cxt, "%s: disabled -- ignore", lb->name));
			continue;
		}
		DBG(CXT, ul_debugobj(cxt, "probing for %s", lb->name));

		cxt->label = lb;
		rc = lb->op->probe(cxt);
		cxt->label = org;

		if (rc != 1) {
			if (lb->op->deinit)
				lb->op->deinit(lb);	/* for sure */
			continue;
		}

		__fdisk_context_switch_label(cxt, lb);
		return 0;
	}

	DBG(CXT, ul_debugobj(cxt, "no label found"));
	return 1; /* not found */
}

Example #4

File: context.c Project: Kynde/util-linux

int fdisk_context_switch_label(struct fdisk_context *cxt, const char *name)
{
	return __fdisk_context_switch_label(cxt,
			fdisk_context_get_label(cxt, name));
}