Esempi in C++ (Cpp) per vhd_journal_remove

Esempio n. 1

File: vhd-util-revert.c Progetto: BobBall/blktap

int
vhd_util_revert(int argc, char **argv)
{
	char *name, *jname;
	vhd_journal_t journal;
	int c, err;

	name  = NULL;
	jname = NULL;

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

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

	libvhd_set_log_level(1);
	err = vhd_journal_open(&journal, name, jname);
	if (err) {
		printf("opening journal failed: %d\n", err);
		return err;
	}

	err = vhd_journal_revert(&journal);
	if (err) {
		printf("reverting journal failed: %d\n", err);
		vhd_journal_close(&journal);
		return err;
	}

	err = vhd_journal_remove(&journal);
	if (err) {
		printf("removing journal failed: %d\n", err);
		vhd_journal_close(&journal);
		return err;
	}

	return 0;

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

Esempio n. 2

File: libvhd-journal.c Progetto: DarumasLegs/blktap

int
vhd_journal_create(vhd_journal_t *j, const char *file, const char *jfile)
{
	int err;

	memset(j, 0, sizeof(vhd_journal_t));
	j->jfd = -1;

	j->jname = strdup(jfile);
	if (j->jname == NULL) {
		err = -ENOMEM;
		goto fail1;
	}

	if (access(j->jname, F_OK) == 0) {
		err = vhd_test_file_fixed(j->jname, &j->is_block);
		if (err)
			goto fail1;

		if (!j->is_block) {
			err = -EEXIST;
			goto fail1;
		}
	}

	if (j->is_block)
		j->jfd = open(j->jname, O_LARGEFILE | O_RDWR, 0644);
	else
		j->jfd = open(j->jname,
			      O_CREAT | O_TRUNC | O_LARGEFILE | O_RDWR, 0644);
	if (j->jfd == -1) {
		err = -errno;
		goto fail1;
	}

	err = vhd_open(&j->vhd, file, VHD_OPEN_RDWR | VHD_OPEN_STRICT);
	if (err)
		goto fail1;

	err = vhd_get_bat(&j->vhd);
	if (err)
		goto fail2;

	if (vhd_has_batmap(&j->vhd)) {
		err = vhd_get_batmap(&j->vhd);
		if (err)
			goto fail2;
	}

	err = vhd_journal_add_journal_header(j);
	if (err)
		goto fail2;

	err = vhd_journal_add_metadata(j);
	if (err)
		goto fail2;

	err = vhd_journal_disable_vhd(j);
	if (err)
		goto fail2;

	err = vhd_journal_sync(j);
	if (err)
		goto fail2;

	return 0;

fail1:
	if (j->jfd != -1) {
		close(j->jfd);
		if (!j->is_block)
			unlink(j->jname);
	}
	free(j->jname);
	memset(j, 0, sizeof(vhd_journal_t));

	return err;

fail2:
	vhd_journal_remove(j);
	return err;
}