C++ (Cpp) blkid_uuid_is_empty Examples

Example #1

File: superblocks.c Project: HorvathAkosPeter/util-linux

int blkid_probe_sprintf_uuid(blkid_probe pr, unsigned char *uuid,
				size_t len, const char *fmt, ...)
{
	struct blkid_chain *chn = blkid_probe_get_chain(pr);
	va_list ap;
	int rc = 0;

	if (blkid_uuid_is_empty(uuid, len))
		return 0;

	if ((chn->flags & BLKID_SUBLKS_UUIDRAW) &&
	    (rc = blkid_probe_set_value(pr, "UUID_RAW", uuid, len)) < 0)
		return rc;

	if (!(chn->flags & BLKID_SUBLKS_UUID))
		return 0;

	va_start(ap, fmt);
	rc = blkid_probe_vsprintf_value(pr, "UUID", fmt, ap);
	va_end(ap);

	return rc;
}

Example #2

File: superblocks.c Project: HorvathAkosPeter/util-linux

/* default _set_uuid function to set DCE UUIDs */
int blkid_probe_set_uuid_as(blkid_probe pr, unsigned char *uuid, const char *name)
{
	struct blkid_chain *chn = blkid_probe_get_chain(pr);
	struct blkid_prval *v;
	int rc = 0;

	if (blkid_uuid_is_empty(uuid, 16))
		return 0;

	if (!name) {
		if ((chn->flags & BLKID_SUBLKS_UUIDRAW) &&
		    (rc = blkid_probe_set_value(pr, "UUID_RAW", uuid, 16)) < 0)
			return rc;

		if (!(chn->flags & BLKID_SUBLKS_UUID))
			return 0;

		v = blkid_probe_assign_value(pr, "UUID");
	} else
		v = blkid_probe_assign_value(pr, name);

	if (!v)
		return -ENOMEM;

	v->len = 37;
	v->data = calloc(1, v->len);
	if (!v->data)
		rc = -ENOMEM;

	if (!rc) {
		blkid_unparse_uuid(uuid, (char *) v->data, v->len);
		return 0;
	}

	blkid_probe_free_value(v);
	return rc;
}

Example #3

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

/* default _set_uuid function to set DCE UUIDs */
int blkid_probe_set_uuid_as(blkid_probe pr, unsigned char *uuid, const char *name)
{
	struct blkid_chain *chn = blkid_probe_get_chain(pr);
	struct blkid_prval *v;

	if (blkid_uuid_is_empty(uuid, 16))
		return 0;

	if (!name) {
		if ((chn->flags & BLKID_SUBLKS_UUIDRAW) &&
		    blkid_probe_set_value(pr, "UUID_RAW", uuid, 16) < 0)
			return -1;
		if (!(chn->flags & BLKID_SUBLKS_UUID))
			return 0;

		v = blkid_probe_assign_value(pr, "UUID");
	} else
		v = blkid_probe_assign_value(pr, name);

	blkid_unparse_uuid(uuid, (char *) v->data, sizeof(v->data));
	v->len = 37;

	return 0;
}

Example #4

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

int blkid_probe_sprintf_uuid(blkid_probe pr, unsigned char *uuid,
				size_t len, const char *fmt, ...)
{
	struct blkid_chain *chn = blkid_probe_get_chain(pr);
	int rc = -1;
	va_list ap;

	if (len > BLKID_PROBVAL_BUFSIZ)
		len = BLKID_PROBVAL_BUFSIZ;

	if (blkid_uuid_is_empty(uuid, len))
		return 0;

	if ((chn->flags & BLKID_SUBLKS_UUIDRAW) &&
	    blkid_probe_set_value(pr, "UUID_RAW", uuid, len) < 0)
		return -1;
	if (!(chn->flags & BLKID_SUBLKS_UUID))
		return 0;

	va_start(ap, fmt);
	rc = blkid_probe_vsprintf_value(pr, "UUID", fmt, ap);
	va_end(ap);

	/* convert to lower case (..be paranoid) */
	if (!rc) {
		size_t i;
		struct blkid_prval *v = __blkid_probe_get_value(pr,
						blkid_probe_numof_values(pr));
		if (v) {
			for (i = 0; i < v->len; i++)
				if (v->data[i] >= 'A' && v->data[i] <= 'F')
					v->data[i] = (v->data[i] - 'A') + 'a';
		}
	}
	return rc;
}