Ejemplos de vhd_write_footer en C++ (Cpp)

Ejemplo n.º 1

Archivo: vhd-util-repair.c Proyecto: Kristoffer/Xen-4.1.2

int
vhd_util_repair(int argc, char **argv)
{
	char *name;
	int err, c;
	off64_t eof;
	vhd_context_t vhd;

	name = NULL;

	if (!argc || !argv)
		goto usage;

	optind = 0;
	while ((c = getopt(argc, argv, "n:h")) != -1) {
		switch (c) {
		case 'n':
			name = optarg;
			break;
		case 'h':
		default:
			goto usage;
		}
	}

	if (!name || optind != argc)
		goto usage;

	err = vhd_open(&vhd, name, VHD_OPEN_RDWR);
	if (err) {
		printf("error opening %s: %d\n", name, err);
		return err;
	}

	err = vhd_write_footer(&vhd, &vhd.footer);
	if (err)
		printf("error writing footer: %d\n", err);

	vhd_close(&vhd);
	return err;

usage:
	printf("options: <-n name> [-h help]\n");
	return -EINVAL;
}

Ejemplo n.º 2

Archivo: libvhd-journal.c Proyecto: DarumasLegs/blktap

static int
vhd_journal_disable_vhd(vhd_journal_t *j)
{
	int err;
	vhd_context_t *vhd;

	vhd = &j->vhd;

	err = vhd_get_footer(vhd);
	if (err)
		return err;

	memcpy(&vhd->footer.cookie,
	       VHD_POISON_COOKIE, sizeof(vhd->footer.cookie));
	vhd->footer.checksum = vhd_checksum_footer(&vhd->footer);

	err = vhd_write_footer(vhd, &vhd->footer);
	if (err)
		return err;

	return 0;
}

Ejemplo n.º 3

Archivo: vhd-update.c Proyecto: 0day-ci/xen

/*
 * update vhd creator version to reflect its new bitmap ordering
 */
static inline int
update_creator_version(vhd_journal_t *journal)
{
	journal->vhd.footer.crtr_ver = VHD_VERSION(1, 1);
	return vhd_write_footer(&journal->vhd, &journal->vhd.footer);
}

Ejemplo n.º 4

Archivo: vhd-util-set-field.c Proyecto: BobBall/blktap

int
vhd_util_set_field(int argc, char **argv)
{
	long value;
	int err, c;
	vhd_context_t vhd;
	char *name, *field;

	err   = -EINVAL;
	value = 0;
	name  = NULL;
	field = NULL;

	if (!argc || !argv)
		goto usage;

	optind = 0;
	while ((c = getopt(argc, argv, "n:f:v:h")) != -1) {
		switch (c) {
		case 'n':
			name = optarg;
			break;
		case 'f':
			field = optarg;
			break;
		case 'v':
			err   = 0;
			value = strtol(optarg, NULL, 10);
			break;
		case 'h':
		default:
			goto usage;
		}
	}

	if (!name || !field || optind != argc || err)
		goto usage;

	if (strnlen(field, 25) >= 25) {
		printf("invalid field\n");
		goto usage;
	}

	if (strcmp(field, "hidden") && strcmp(field, "marker")) {
		printf("invalid field %s\n", field);
		goto usage;
	}

	if (value < 0 || value > 255) {
		printf("invalid value %ld\n", value);
		goto usage;
	}

	err = vhd_open(&vhd, name, VHD_OPEN_RDWR);
	if (err) {
		printf("error opening %s: %d\n", name, err);
		return err;
	}

	if (!strcmp(field, "hidden")) {
		vhd.footer.hidden = (char)value;
		err = vhd_write_footer(&vhd, &vhd.footer);
		if (err == -ENOSPC && vhd_type_dynamic(&vhd) && value)
			/* if no space to write the primary footer, at least write the 
			 * backup footer so that it's possible to delete the VDI */
			err = vhd_write_footer_at(&vhd, &vhd.footer, 0);
	} else {
		err = vhd_set_marker(&vhd, (char)value);
	}
		
 	vhd_close(&vhd);
	return err;

usage:
	printf("options: <-n name> <-f field> <-v value> [-h help]\n");
	return -EINVAL;
}