/**
* 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);
}
void toggle_dos_compatibility_flag(struct fdisk_context *cxt)
{
struct fdisk_label *lb = fdisk_context_get_label(cxt, "dos");
int flag;
if (!lb)
return;
flag = !fdisk_dos_is_compatible(lb);
fdisk_info(cxt, flag ?
_("DOS Compatibility flag is set (DEPRECATED!)") :
_("DOS Compatibility flag is not set"));
fdisk_dos_enable_compatible(lb, flag);
if (fdisk_is_disklabel(cxt, DOS))
fdisk_reset_alignment(cxt); /* reset the current label */
}
/* It would be possible to use fdisk_table_to_string(), but we want some
* extension to the output format, so let's do it without libfdisk
*/
static char *table_to_string(struct cfdisk *cf, struct fdisk_table *tb)
{
const struct fdisk_column *col;
struct fdisk_partition *pa;
struct fdisk_label *lb;
struct fdisk_iter *itr = NULL;
struct libscols_table *table = NULL;
struct libscols_iter *s_itr = NULL;
char *res = NULL;
size_t i;
int tree = 0;
struct libscols_line *ln, *ln_cont = NULL;
DBG(FRONTEND, ul_debug("table: convert to string"));
assert(cf);
assert(cf->cxt);
assert(cf->cols);
assert(tb);
lb = fdisk_context_get_label(cf->cxt, NULL);
assert(lb);
itr = fdisk_new_iter(FDISK_ITER_FORWARD);
if (!itr)
goto done;
/* get container (e.g. extended partition) */
while (fdisk_table_next_partition(tb, itr, &pa) == 0) {
if (fdisk_partition_is_nested(pa)) {
DBG(FRONTEND, ul_debug("table: nested detected, using tree"));
tree = SCOLS_FL_TREE;
break;
}
}
table = scols_new_table();
if (!table)
goto done;
scols_table_enable_maxout(table, 1);
/* headers */
for (i = 0; i < cf->ncols; i++) {
col = fdisk_label_get_column(lb, cf->cols[i]);
if (col) {
int fl = col->scols_flags;
if (tree && col->id == FDISK_COL_DEVICE)
fl |= SCOLS_FL_TREE;
if (!scols_table_new_column(table, col->name, col->width, fl))
goto done;
}
}
/* data */
fdisk_reset_iter(itr, FDISK_ITER_FORWARD);
while (fdisk_table_next_partition(tb, itr, &pa) == 0) {
struct libscols_line *parent = fdisk_partition_is_nested(pa) ? ln_cont : NULL;
ln = scols_table_new_line(table, parent);
if (!ln)
goto done;
for (i = 0; i < cf->ncols; i++) {
char *cdata = NULL;
col = fdisk_label_get_column(lb, cf->cols[i]);
if (!col)
continue;
if (fdisk_partition_to_string(pa, cf->cxt, col->id, &cdata))
continue;
scols_line_refer_data(ln, i, cdata);
}
if (tree && fdisk_partition_is_container(pa))
ln_cont = ln;
scols_line_set_userdata(ln, (void *) pa);
fdisk_ref_partition(pa);
}
if (scols_table_is_empty(table))
goto done;
scols_table_reduce_termwidth(table, ARROW_CURSOR_WIDTH);
scols_print_table_to_string(table, &res);
/* scols_* code might reorder lines, let's reorder @tb according to the
* final output (it's no problem because partitions are addressed by
* parno stored within struct fdisk_partition) */
/* remove all */
fdisk_reset_iter(itr, FDISK_ITER_FORWARD);
while (fdisk_table_next_partition(tb, itr, &pa) == 0)
fdisk_table_remove_partition(tb, pa);
s_itr = scols_new_iter(SCOLS_ITER_FORWARD);
if (!s_itr)
goto done;
/* add all in the right order (don't forget the output is tree) */
while (scols_table_next_line(table, s_itr, &ln) == 0) {
if (scols_line_get_parent(ln))
continue;
if (partition_from_scols(tb, ln))
break;
}
done:
scols_unref_table(table);
scols_free_iter(s_itr);
fdisk_free_iter(itr);
return res;
}
int main(int argc, char **argv)
{
int i, c, act = ACT_FDISK;
int colormode = UL_COLORMODE_AUTO;
struct fdisk_context *cxt;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
fdisk_init_debug(0);
cxt = fdisk_new_context();
if (!cxt)
err(EXIT_FAILURE, _("failed to allocate libfdisk context"));
fdisk_context_set_ask(cxt, ask_callback, NULL);
while ((c = getopt(argc, argv, "b:c::C:hH:lL::sS:t:u::vV")) != -1) {
switch (c) {
case 'b':
{
size_t sz = strtou32_or_err(optarg,
_("invalid sector size argument"));
if (sz != 512 && sz != 1024 && sz != 2048 && sz != 4096)
usage(stderr);
fdisk_save_user_sector_size(cxt, sz, sz);
break;
}
case 'C':
fdisk_save_user_geometry(cxt,
strtou32_or_err(optarg,
_("invalid cylinders argument")),
0, 0);
break;
case 'c':
if (optarg) {
/* this setting is independent on the current
* actively used label */
struct fdisk_label *lb = fdisk_context_get_label(cxt, "dos");
if (!lb)
err(EXIT_FAILURE, _("not found DOS label driver"));
if (strcmp(optarg, "=dos") == 0)
fdisk_dos_enable_compatible(lb, TRUE);
else if (strcmp(optarg, "=nondos") == 0)
fdisk_dos_enable_compatible(lb, FALSE);
else
usage(stderr);
}
/* use default if no optarg specified */
break;
case 'H':
fdisk_save_user_geometry(cxt, 0,
strtou32_or_err(optarg,
_("invalid heads argument")),
0);
break;
case 'S':
fdisk_save_user_geometry(cxt, 0, 0,
strtou32_or_err(optarg,
_("invalid sectors argument")));
break;
case 'l':
act = ACT_LIST;
break;
case 'L':
if (optarg)
colormode = colormode_or_err(optarg,
_("unsupported color mode"));
break;
case 's':
act = ACT_SHOWSIZE;
break;
case 't':
{
struct fdisk_label *lb = NULL;
while (fdisk_context_next_label(cxt, &lb) == 0)
fdisk_label_set_disabled(lb, 1);
lb = fdisk_context_get_label(cxt, optarg);
if (!lb)
errx(EXIT_FAILURE, _("unsupported disklabel: %s"), optarg);
fdisk_label_set_disabled(lb, 0);
}
case 'u':
if (optarg && *optarg == '=')
optarg++;
if (fdisk_context_set_unit(cxt, optarg) != 0)
usage(stderr);
break;
case 'V':
case 'v':
printf(UTIL_LINUX_VERSION);
return EXIT_SUCCESS;
case 'h':
usage(stdout);
default:
usage(stderr);
}
}
if (argc-optind != 1 && fdisk_has_user_device_properties(cxt))
warnx(_("The device properties (sector size and geometry) should"
" be used with one specified device only."));
colors_init(colormode);
switch (act) {
case ACT_LIST:
fdisk_context_enable_listonly(cxt, 1);
if (argc > optind) {
int k;
for (k = optind; k < argc; k++)
print_device_pt(cxt, argv[k]);
} else
print_all_devices_pt(cxt);
break;
case ACT_SHOWSIZE:
/* deprecated */
if (argc - optind <= 0)
usage(stderr);
for (i = optind; i < argc; i++) {
if (argc - optind == 1)
printf("%llu\n", get_dev_blocks(argv[i]));
else
printf("%s: %llu\n", argv[i], get_dev_blocks(argv[i]));
}
break;
case ACT_FDISK:
if (argc-optind != 1)
usage(stderr);
if (fdisk_context_assign_device(cxt, argv[optind], 0) != 0)
err(EXIT_FAILURE, _("cannot open %s"), argv[optind]);
/* Here starts interactive mode, use fdisk_{warn,info,..} functions */
color_enable(UL_COLOR_GREEN);
fdisk_info(cxt, _("Welcome to fdisk (%s)."), PACKAGE_STRING);
color_disable();
fdisk_info(cxt, _("Changes will remain in memory only, until you decide to write them.\n"
"Be careful before using the write command.\n"));
fflush(stdout);
if (!fdisk_dev_has_disklabel(cxt)) {
fdisk_warnx(cxt, _("Device does not contain a recognized partition table."));
fdisk_create_disklabel(cxt, NULL);
}
while (1)
process_fdisk_menu(&cxt);
}
fdisk_free_context(cxt);
return EXIT_SUCCESS;
}
int fdisk_context_switch_label(struct fdisk_context *cxt, const char *name)
{
return __fdisk_context_switch_label(cxt,
fdisk_context_get_label(cxt, name));
}