static int
vhd_print_headers(vhd_context_t *vhd, int hex)
{
int err;
vhd_print_footer(&vhd->footer, hex);
if (vhd_type_dynamic(vhd)) {
vhd_print_header(vhd, &vhd->header, hex);
if (vhd->footer.type == HD_TYPE_DIFF)
vhd_print_parent_locators(vhd, hex);
if (vhd_has_batmap(vhd)) {
err = vhd_get_batmap(vhd);
if (err) {
printf("failed to get batmap header\n");
return err;
}
vhd_print_batmap_header(vhd, &vhd->batmap, hex);
}
}
return 0;
}
static int
vhd_print_batmap(vhd_context_t *vhd)
{
int err, gcc;
size_t size;
err = vhd_get_batmap(vhd);
if (err) {
printf("failed to read batmap: %d\n", err);
return err;
}
size = vhd_sectors_to_bytes(vhd->batmap.header.batmap_size);
gcc = write(STDOUT_FILENO, vhd->batmap.map, size);
if (gcc)
;
return 0;
}
static int
vhd_test_batmap(vhd_context_t *vhd, uint64_t block, int count, int hex)
{
int i, err;
uint64_t cur;
if (check_block_range(vhd, block + count, hex))
return -ERANGE;
err = vhd_get_batmap(vhd);
if (err) {
fprintf(stderr, "failed to get batmap\n");
return err;
}
for (i = 0; i < count; i++) {
cur = block + i;
fprintf(stderr, "batmap for block %s: %d\n", conv(hex, cur),
vhd_batmap_test(vhd, &vhd->batmap, cur));
}
return 0;
}
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;
}
int
vhd_journal_open(vhd_journal_t *j, const char *file, const char *jfile)
{
int err;
vhd_context_t *vhd;
memset(j, 0, sizeof(vhd_journal_t));
j->jfd = -1;
vhd = &j->vhd;
j->jname = strdup(jfile);
if (j->jname == NULL)
return -ENOMEM;
j->jfd = open(j->jname, O_LARGEFILE | O_RDWR);
if (j->jfd == -1) {
err = -errno;
goto fail;
}
err = vhd_test_file_fixed(j->jname, &j->is_block);
if (err)
goto fail;
vhd->fd = open(file, O_LARGEFILE | O_RDWR | O_DIRECT);
if (vhd->fd == -1) {
err = -errno;
goto fail;
}
err = vhd_test_file_fixed(file, &vhd->is_block);
if (err)
goto fail;
err = vhd_journal_read_journal_header(j, &j->header);
if (err)
goto fail;
err = vhd_journal_restore_metadata(j);
if (err)
goto fail;
close(vhd->fd);
free(vhd->bat.bat);
free(vhd->batmap.map);
err = vhd_open(vhd, file, VHD_OPEN_RDWR);
if (err)
goto fail;
err = vhd_get_bat(vhd);
if (err)
goto fail;
if (vhd_has_batmap(vhd)) {
err = vhd_get_batmap(vhd);
if (err)
goto fail;
}
err = vhd_journal_disable_vhd(j);
if (err)
goto fail;
return 0;
fail:
vhd_journal_close(j);
return err;
}