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part_edit.c revision 1.1
      1 /*	$NetBSD: part_edit.c,v 1.1 2019/06/12 06:20:18 martin Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2019 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 
     30 /* part_edit.c -- generic partition editing code */
     31 
     32 #include <sys/param.h>
     33 #include <sys/types.h>
     34 #include <assert.h>
     35 #include <stdio.h>
     36 #include <unistd.h>
     37 #include <fcntl.h>
     38 #include <util.h>
     39 #include "defs.h"
     40 #include "md.h"
     41 #include "msg_defs.h"
     42 #include "menu_defs.h"
     43 #include "defsizes.h"
     44 #include "endian.h"
     45 
     46 
     47 /*
     48  * A structure passed to various menu functions for partition editing
     49  */
     50 struct part_edit_info {
     51 	struct disk_partitions *parts;	/* the partitions we edit */
     52 	struct disk_part_info cur;	/* current value (maybe incomplete) */
     53 	part_id cur_id;			/* which partition is it? */
     54 	int first_custom_opt;		/* scheme specific menu options
     55 					 * start here */
     56 	bool cancelled;			/* do not apply changes */
     57 	bool num_changed;		/* number of partitions has changed */
     58 };
     59 
     60 static menu_ent *part_menu_opts;		/* the currently edited partitions */
     61 static menu_ent *outer_fill_part_menu_opts(const struct disk_partitions *parts, size_t *cnt);
     62 
     63 static char 	outer_part_sep_line[MENUSTRSIZE],
     64 		outer_part_title[2*MENUSTRSIZE];
     65 
     66 static int
     67 maxline(const char *p, int *count)
     68 {
     69 	int m = 0, i = 0;
     70 
     71 	for (;; p++) {
     72 		if (*p == '\n' || *p == 0) {
     73 			if (i > m)
     74 				m = i;
     75 			(*count)++;
     76 			if (*p == 0)
     77 				return m;
     78 			i = 0;
     79 		} else {
     80 			i++;
     81 		}
     82 	}
     83 }
     84 
     85 int
     86 err_msg_win(const char *errmsg)
     87 {
     88 	const char *cont;
     89 	int l, l1, lines;
     90 
     91 	errmsg = msg_string(errmsg);
     92 	cont = msg_string(MSG_Hit_enter_to_continue);
     93 
     94 	lines = 0;
     95 	l = maxline(errmsg, &lines);
     96 	l1 = maxline(cont, &lines);
     97 	if (l < l1)
     98 		l = l1;
     99 
    100 	msg_prompt_win("%s.\n%s", -1, 18, l + 5, 2+lines,
    101 			NULL, NULL, 1, errmsg, cont);
    102 	return 0;
    103 }
    104 
    105 static int
    106 set_part_type(menudesc *m, void *arg)
    107 {
    108 	struct part_edit_info *info = arg;
    109 	const struct part_type_desc *desc;
    110 	char buf[STRSIZE];
    111 	const char *err;
    112 
    113 	if (m->cursel == 0)
    114 		return 1;	/* no change */
    115 
    116 	desc = info->parts->pscheme->get_part_type(m->cursel-1);
    117 	if (desc == NULL) {
    118 		/* Create custom type */
    119 		if (info->cur.nat_type != NULL)
    120 			strlcpy(buf, info->cur.nat_type->short_desc,
    121 			    sizeof(buf));
    122 		else
    123 			buf[0] = 0;
    124 		for (;;) {
    125 			msg_prompt_win(info->parts->pscheme->new_type_prompt,
    126 			     -1, 18, 0, 0,
    127 			    buf, buf, sizeof(buf));
    128 			if (buf[0] == 0)
    129 				break;
    130 			desc = info->parts->pscheme->create_custom_part_type(
    131 			    buf, &err);
    132 			if (desc != NULL)
    133 				break;
    134 			err_msg_win(err);
    135 		}
    136 	}
    137 
    138 	info->cur.nat_type = desc;
    139 	return 1;
    140 }
    141 
    142 static void
    143 set_type_label(menudesc *m, int opt, void *arg)
    144 {
    145 	struct part_edit_info *info = arg;
    146 	const struct part_type_desc *desc;
    147 
    148 	if (opt == 0) {
    149 		wprintw(m->mw, "%s", msg_string(MSG_Dont_change));
    150 		return;
    151 	}
    152 
    153 	desc = info->parts->pscheme->get_part_type(opt-1);
    154 	if (desc == NULL) {
    155 		wprintw(m->mw, "%s", msg_string(MSG_Other_kind));
    156 		return;
    157 	}
    158 	wprintw(m->mw, "%s", desc->description);
    159 }
    160 
    161 static int
    162 edit_part_type(menudesc *m, void *arg)
    163 {
    164 	struct part_edit_info *info = arg;
    165 	menu_ent *type_opts;
    166 	int type_menu = -1;
    167 	size_t popt_cnt, i;
    168 
    169 	/*
    170 	 * We add one line at the start of the menu, and one at the
    171 	 * bottom, see "set_type_label" above.
    172 	 */
    173 	popt_cnt =  info->parts->pscheme->get_part_types_count() + 2;
    174 	type_opts = calloc(popt_cnt, sizeof(*type_opts));
    175 	for (i = 0; i < popt_cnt; i++) {
    176 		type_opts[i].opt_menu = OPT_NOMENU;
    177 		type_opts[i].opt_action = set_part_type;
    178 	}
    179 	type_menu = new_menu(NULL, type_opts, popt_cnt,
    180 		13, 12, 0, 30,
    181 		MC_SUBMENU | MC_SCROLL | MC_NOEXITOPT | MC_NOCLEAR,
    182 		NULL, set_type_label, NULL,
    183 		NULL, NULL);
    184 
    185 	if (type_menu != -1) {
    186 		process_menu(type_menu, arg);
    187 		info->num_changed = true;	/* force reload of menu */
    188 	}
    189 
    190 	free_menu(type_menu);
    191 	free(type_opts);
    192 
    193 	return -1;
    194 }
    195 
    196 static int
    197 edit_part_start(menudesc *m, void *arg)
    198 {
    199 	struct part_edit_info *marg = arg;
    200 	daddr_t max_size;
    201 
    202 	marg->cur.start = getpartoff(marg->parts, marg->cur.start);
    203 	max_size = marg->parts->pscheme->max_free_space_at(marg->parts,
    204 	    marg->cur.start);
    205 	if (marg->cur.size > max_size)
    206 		marg->cur.size = max_size;
    207 
    208 	return 0;
    209 }
    210 
    211 static int
    212 edit_part_size(menudesc *m, void *arg)
    213 {
    214 	struct part_edit_info *marg = arg;
    215 
    216 	marg->cur.size = getpartsize(marg->parts, marg->cur.start,
    217 	    marg->cur.size);
    218 
    219 	return 0;
    220 }
    221 
    222 static int
    223 edit_part_install(menudesc *m, void *arg)
    224 {
    225 	struct part_edit_info *marg = arg;
    226 
    227 	if (pm->ptstart == marg->cur.start) {
    228 		pm->ptstart = 0;
    229 		pm->ptsize = 0;
    230 	} else {
    231 		pm->ptstart = marg->cur.start;
    232 		pm->ptsize = marg->cur.size;
    233 	}
    234 	return 0;
    235 }
    236 
    237 static void
    238 menu_opts_reload(menudesc *m, const struct disk_partitions *parts)
    239 {
    240 	size_t new_num;
    241 
    242 	free(part_menu_opts);
    243 	part_menu_opts = outer_fill_part_menu_opts(parts, &new_num);
    244 	m->opts = part_menu_opts;
    245 	m->numopts = new_num;
    246 }
    247 
    248 static int
    249 delete_part(menudesc *m, void *arg)
    250 {
    251 	struct part_edit_info *marg = arg;
    252 	const char *err_msg = NULL;
    253 
    254 	if (marg->cur_id == NO_PART)
    255 		return 0;
    256 
    257 	if (!marg->parts->pscheme->delete_partition(marg->parts, marg->cur_id,
    258 	    &err_msg))
    259 		err_msg_win(err_msg);
    260 
    261 	marg->num_changed = true;	/* reload list of partitions */
    262 	marg->cancelled = true;		/* do not write back cur data */
    263 
    264 	return 0;
    265 }
    266 
    267 static void draw_outer_ptn_line(menudesc *m, int line, void *arg);
    268 static void draw_outer_ptn_header(menudesc *m, void *arg);
    269 
    270 static int
    271 part_rollback(menudesc *m, void *arg)
    272 {
    273 	struct part_edit_info *marg = arg;
    274 
    275 	marg->cancelled = true;
    276 	return 0;
    277 }
    278 
    279 static menu_ent common_ptn_edit_opts[] = {
    280 #define PTN_OPT_TYPE		0
    281 	{ .opt_menu=OPT_NOMENU, .opt_action=edit_part_type },
    282 #define PTN_OPT_START		1
    283 	{ .opt_menu=OPT_NOMENU, .opt_action=edit_part_start },
    284 #define PTN_OPT_SIZE		2
    285 	{ .opt_menu=OPT_NOMENU, .opt_action=edit_part_size },
    286 #define PTN_OPT_END		3
    287 	{ .opt_menu=OPT_NOMENU, .opt_flags=OPT_IGNORE }, /* read only "end" */
    288 
    289 	/*
    290 	 * Only the part upto here will be used when adding a new partition
    291 	 */
    292 
    293 #define PTN_OPT_INSTALL		4
    294 	{ .opt_menu=OPT_NOMENU, .opt_action=edit_part_install },
    295 
    296 #define	PTN_OPTS_COMMON		PTN_OPT_INSTALL	/* cut off from here for add */
    297 };
    298 
    299 static int
    300 edit_custom_opt(menudesc *m, void *arg)
    301 {
    302 	struct part_edit_info *marg = arg;
    303 	size_t attr_no = m->cursel - marg->first_custom_opt;
    304 	char line[STRSIZE];
    305 
    306 	switch (marg->parts->pscheme->custom_attributes[attr_no].type) {
    307 	case pet_bool:
    308 		marg->parts->pscheme->custom_attribute_toggle(
    309 		    marg->parts, marg->cur_id, attr_no);
    310 		break;
    311 	case pet_cardinal:
    312 	case pet_str:
    313 		marg->parts->pscheme->format_custom_attribute(
    314 		    marg->parts, marg->cur_id, attr_no, &marg->cur,
    315 		    line, sizeof(line));
    316 		msg_prompt_win(
    317 		    marg->parts->pscheme->custom_attributes[attr_no].label,
    318 		    -1, 18, 0, 0, line, line, sizeof(line));
    319 		marg->parts->pscheme->custom_attribute_set_str(
    320 		    marg->parts, marg->cur_id, attr_no, line);
    321 		break;
    322 	}
    323 
    324 	return 0;
    325 }
    326 
    327 static menu_ent ptn_edit_opts[] = {
    328 	{ .opt_name=MSG_askunits, .opt_menu=MENU_sizechoice,
    329 	  .opt_flags=OPT_SUB },
    330 
    331 	{ .opt_name=MSG_Delete_partition, .opt_menu=OPT_NOMENU,
    332 	  .opt_action = delete_part, .opt_flags = OPT_EXIT },
    333 
    334 	{ .opt_name=MSG_cancel, .opt_menu=OPT_NOMENU,
    335 	  .opt_action = part_rollback, .opt_flags = OPT_EXIT },
    336 };
    337 
    338 static menu_ent ptn_add_opts[] = {
    339 	{ .opt_name=MSG_askunits, .opt_menu=MENU_sizechoice,
    340 	  .opt_flags=OPT_SUB },
    341 
    342 	{ .opt_name=MSG_cancel, .opt_menu=OPT_NOMENU,
    343 	  .opt_action = part_rollback, .opt_flags = OPT_EXIT },
    344 };
    345 
    346 /*
    347  * Concatenate common_ptn_edit_opts, the partitioning scheme specific
    348  * custom options and the given suffix to a single menu options array.
    349  */
    350 static menu_ent *
    351 fill_part_edit_menu_opts(struct disk_partitions *parts,
    352     bool with_custom_attrs,
    353     const menu_ent *suffix, size_t suffix_count, size_t *res_cnt)
    354 {
    355 	size_t i;
    356 	menu_ent *opts, *p;
    357 	size_t count, hdr_cnt;
    358 
    359 	if (with_custom_attrs) {
    360 		hdr_cnt = __arraycount(common_ptn_edit_opts);
    361 		count = hdr_cnt + parts->pscheme->custom_attribute_count
    362 		    + suffix_count;
    363 	} else {
    364 		hdr_cnt = PTN_OPTS_COMMON;
    365 		count = hdr_cnt + suffix_count;
    366 	}
    367 
    368 	opts = calloc(count, sizeof(*opts));
    369 	if (opts == NULL) {
    370 		*res_cnt = 0;
    371 		return NULL;
    372 	}
    373 
    374 	memcpy(opts, common_ptn_edit_opts,
    375 	    sizeof(*opts)*hdr_cnt);
    376 	p = opts + hdr_cnt;
    377 	if (with_custom_attrs) {
    378 		for (i = 0; i < parts->pscheme->custom_attribute_count; i++) {
    379 			p->opt_menu = OPT_NOMENU;
    380 			p->opt_action = edit_custom_opt;
    381 			p++;
    382 		}
    383 	}
    384 	memcpy(p, suffix, sizeof(*opts)*suffix_count);
    385 
    386 	*res_cnt = count;
    387 	return opts;
    388 }
    389 
    390 static int
    391 edit_part_entry(menudesc *m, void *arg)
    392 {
    393 	arg_rv *av = arg;
    394 	struct part_edit_info data = { .parts = av->arg, .cur_id = m->cursel,
    395 	    .first_custom_opt = __arraycount(common_ptn_edit_opts) };
    396 	int ptn_menu;
    397 	const char *err;
    398 	menu_ent *opts;
    399 	size_t num_opts;
    400 
    401 	opts = fill_part_edit_menu_opts(av->arg, true, ptn_edit_opts,
    402 	    __arraycount(ptn_edit_opts), &num_opts);
    403 	if (opts == NULL)
    404 		return 1;
    405 
    406 	if (data.cur_id < data.parts->num_part)
    407 		data.parts->pscheme->get_part_info(data.parts, data.cur_id,
    408 		    &data.cur);
    409 
    410 	ptn_menu = new_menu(NULL, opts, num_opts,
    411 		15, 2, 0, 54,
    412 		MC_SUBMENU | MC_SCROLL | MC_NOCLEAR,
    413 		draw_outer_ptn_header, draw_outer_ptn_line, NULL,
    414 		NULL, MSG_Partition_OK);
    415 	if (ptn_menu == -1) {
    416 		free(opts);
    417 		return 1;
    418 	}
    419 
    420 	process_menu(ptn_menu, &data);
    421 	free_menu(ptn_menu);
    422 	free(opts);
    423 
    424 	if (!data.cancelled && data.cur_id < data.parts->num_part)
    425 		if (!data.parts->pscheme->set_part_info(data.parts,
    426 		    data.cur_id, &data.cur, &err))
    427 			err_msg_win(err);
    428 
    429 	if (data.num_changed) {
    430 		menu_opts_reload(m, data.parts);
    431 		m->cursel = data.parts->num_part > 0 ? 0 : 2;
    432 		return -1;
    433 	}
    434 
    435 	return 0;
    436 }
    437 
    438 static int
    439 add_part_entry(menudesc *m, void *arg)
    440 {
    441 	arg_rv *av = arg;
    442 	struct part_edit_info data = { .parts = av->arg,
    443 	    .first_custom_opt = PTN_OPTS_COMMON };
    444 	int ptn_menu;
    445 	daddr_t ptn_alignment;
    446 	menu_ent *opts;
    447 	size_t num_opts;
    448 	struct disk_part_free_space space;
    449 	const char *err;
    450 
    451 	opts = fill_part_edit_menu_opts(av->arg, false, ptn_add_opts,
    452 	    __arraycount(ptn_add_opts), &num_opts);
    453 	if (opts == NULL)
    454 		return 1;
    455 
    456 	ptn_alignment = data.parts->pscheme->get_part_alignment(data.parts);
    457 	data.cur_id = NO_PART;
    458 	memset(&data.cur, 0, sizeof(data.cur));
    459 	data.cur.nat_type = data.parts->pscheme->
    460 	    get_generic_part_type(PT_root);
    461 	if (data.parts->pscheme->get_free_spaces(data.parts, &space, 1,
    462 	    max(sizemult, ptn_alignment), ptn_alignment, -1, -1) > 0) {
    463 		data.cur.start = space.start;
    464 		data.cur.size = space.size;
    465 	} else {
    466 		return 0;
    467 	}
    468 
    469 	ptn_menu = new_menu(NULL, opts, num_opts,
    470 		15, -1, 0, 54,
    471 		MC_SUBMENU | MC_SCROLL | MC_NOCLEAR,
    472 		draw_outer_ptn_header, draw_outer_ptn_line, NULL,
    473 		NULL, MSG_Partition_OK);
    474 	if (ptn_menu == -1) {
    475 		free(opts);
    476 		return 1;
    477 	}
    478 
    479 	process_menu(ptn_menu, &data);
    480 	free_menu(ptn_menu);
    481 	free(opts);
    482 
    483 	if (!data.cancelled &&
    484 	    data.parts->pscheme->add_partition(data.parts, &data.cur, &err)
    485 	    == NO_PART)
    486 		err_msg_win(err);
    487 
    488 	menu_opts_reload(m, data.parts);
    489 	m->cursel = data.parts->num_part+1;
    490 	if (data.parts->num_part == 0)
    491 		m->cursel++;
    492 	return -1;
    493 }
    494 
    495 static void
    496 draw_outer_ptn_line(menudesc *m, int line, void *arg)
    497 {
    498 	struct part_edit_info *marg = arg;
    499 	char value[STRSIZE];
    500 	static int col_width;
    501 	static const char *yes, *no, *ptn_type, *ptn_start, *ptn_size,
    502 	    *ptn_end, *ptn_install;
    503 
    504 	if (yes == NULL) {
    505 		int i;
    506 
    507 #define CHECK(str)	i = strlen(str); if (i > col_width) col_width = i;
    508 
    509 		col_width = 0;
    510 		yes = msg_string(MSG_Yes); CHECK(yes);
    511 		no = msg_string(MSG_No); CHECK(no);
    512 		ptn_type = msg_string(MSG_ptn_type); CHECK(ptn_type);
    513 		ptn_start = msg_string(MSG_ptn_start); CHECK(ptn_start);
    514 		ptn_size = msg_string(MSG_ptn_size); CHECK(ptn_size);
    515 		ptn_end = msg_string(MSG_ptn_end); CHECK(ptn_end);
    516 		ptn_install = msg_string(MSG_ptn_install); CHECK(ptn_install);
    517 
    518 #undef CHECK
    519 
    520 		for (size_t n = 0;
    521 		    n < marg->parts->pscheme->custom_attribute_count; n++) {
    522 			i = strlen(msg_string(
    523 			    marg->parts->pscheme->custom_attributes[n].label));
    524 			if (i > col_width)
    525 				col_width = i;
    526 		}
    527 		col_width += 3;
    528 	}
    529 
    530 	if (line >= marg->first_custom_opt) {
    531 		size_t attr_no = line-marg->first_custom_opt;
    532 		marg->parts->pscheme->format_custom_attribute(
    533 		    marg->parts, marg->cur_id, attr_no, &marg->cur,
    534 		    value, sizeof(value));
    535 		wprintw(m->mw, "%*s : %s", col_width,
    536 		    msg_string(
    537 		    marg->parts->pscheme->custom_attributes[attr_no].label),
    538 		    value);
    539 		return;
    540 	}
    541 
    542 	switch (line) {
    543 	case PTN_OPT_TYPE:
    544 		wprintw(m->mw, "%*s : %s", col_width, ptn_type,
    545 		    marg->cur.nat_type != NULL
    546 		    ? marg->cur.nat_type->description
    547 		    : "-");
    548 		break;
    549 	case PTN_OPT_START:
    550 		wprintw(m->mw, "%*s : %" PRIu64 " %s", col_width, ptn_start,
    551 		    marg->cur.start / (daddr_t)sizemult, multname);
    552 		break;
    553 	case PTN_OPT_SIZE:
    554 		wprintw(m->mw, "%*s : %" PRIu64 " %s", col_width, ptn_size,
    555 		    marg->cur.size / (daddr_t)sizemult, multname);
    556 		break;
    557 	case PTN_OPT_END:
    558 		wprintw(m->mw, "%*s : %" PRIu64 " %s", col_width, ptn_end,
    559 		    (marg->cur.start + marg->cur.size - 1) / (daddr_t)sizemult,
    560 		    multname);
    561 		break;
    562 	case PTN_OPT_INSTALL:
    563 		wprintw(m->mw, "%*s : %s", col_width, ptn_install,
    564 		    (marg->cur.nat_type->generic_ptype == PT_root &&
    565 		    marg->cur.start == pm->ptstart) ? yes : no);
    566 		break;
    567 	}
    568 
    569 }
    570 
    571 static void
    572 draw_outer_ptn_header(menudesc *m, void *arg)
    573 {
    574 	struct part_edit_info *marg = arg;
    575 	size_t attr_no;
    576 	bool may_change_type;
    577 
    578 #define DISABLE(opt,cond) \
    579 	if (cond) \
    580 		m->opts[opt].opt_flags |= OPT_IGNORE; \
    581 	else \
    582 		m->opts[opt].opt_flags &= ~OPT_IGNORE;
    583 
    584 	/* e.g. MBR extended partitions can only change if empty */
    585 	may_change_type = marg->cur_id == NO_PART
    586 	     || marg->parts->pscheme->part_type_can_change == NULL
    587 	     || marg->parts->pscheme->part_type_can_change(
    588 		    marg->parts, marg->cur_id);
    589 
    590 	DISABLE(PTN_OPT_TYPE, !may_change_type);
    591 	if (!may_change_type && m->cursel == PTN_OPT_TYPE)
    592 		m->cursel++;
    593 	if (marg->cur_id != NO_PART) {
    594 		for (int i = 0; i < m->numopts; i++) {
    595 			if (m->opts[i].opt_action == delete_part) {
    596 				DISABLE(i, !may_change_type);
    597 			}
    598 		}
    599 	}
    600 
    601 	/* Can only install into NetBSD partition */
    602 	if (marg->cur_id != NO_PART) {
    603 		DISABLE(PTN_OPT_INSTALL, marg->cur.nat_type == NULL
    604 		    || marg->cur.nat_type->generic_ptype != PT_root);
    605 	}
    606 
    607 	if (marg->cur_id == NO_PART)
    608 		return;
    609 
    610 	for (attr_no = 0; attr_no <
    611 	    marg->parts->pscheme->custom_attribute_count; attr_no++) {
    612 		bool writable =
    613 		    marg->parts->pscheme->custom_attribute_writable(
    614 			marg->parts, marg->cur_id, attr_no);
    615 		DISABLE(attr_no+marg->first_custom_opt, !writable);
    616 	}
    617 }
    618 
    619 static void
    620 draw_outer_part_line(menudesc *m, int opt, void *arg)
    621 {
    622 	arg_rv *args = arg;
    623 	struct disk_partitions *parts = args->arg;
    624 	int len;
    625 	part_id pno = opt;
    626 	struct disk_part_info info;
    627 	char buf[SSTRSIZE], *astr, colval[STRSIZE], line[STRSIZE];
    628 	size_t astr_avail, x;
    629 	static char install_flag = 0;
    630 
    631 #define PART_ROW_USED_FMT	"%13" PRIu64 " %13" PRIu64 " %-4s"
    632 
    633 	len = snprintf(0, 0, PART_ROW_USED_FMT, (daddr_t)0, (daddr_t)0, "");
    634 
    635 	if (pno >= parts->num_part ||
    636 	    !parts->pscheme->get_part_info(parts, pno, &info)) {
    637 		wprintw(m->mw, "%*s", len, "");
    638 		// XXX
    639 		return;
    640 	}
    641 
    642 	if (info.start == pm->ptstart &&
    643 	    info.nat_type->generic_ptype == PT_root) {
    644 		if (install_flag == 0)
    645 			install_flag = msg_string(MSG_install_flag)[0];
    646 		astr_avail = sizeof(buf)-1;
    647 		buf[0] = install_flag;
    648 		buf[1] = 0;
    649 		astr = buf+1;
    650 	} else {
    651 		buf[0] = 0;
    652 		astr = buf;
    653 		astr_avail = sizeof(buf);
    654 	}
    655 	if (parts->pscheme->get_part_attr_str != NULL)
    656 		parts->pscheme->get_part_attr_str(parts, pno, astr,
    657 		    astr_avail);
    658 
    659 	daddr_t start = info.start / sizemult;
    660 	daddr_t size = info.size / sizemult;
    661 	wprintw(m->mw, PART_ROW_USED_FMT,
    662 	    start, size, buf);
    663 
    664 	line[0] = 0; x = 0;
    665 	for (size_t col = 0; col < parts->pscheme->edit_columns_count; col++) {
    666 		if (parts->pscheme->format_partition_table_str(parts, pno,
    667 		    col, colval, sizeof(colval)) && colval[0] != 0
    668 		    && x < sizeof(line)-2) {
    669 			for (size_t i = strlen(line); i < x; i++)
    670 				line[i] = ' ';
    671 			line[x] = ' ';
    672 			strlcpy(line+x+1, colval, sizeof(line)-x-1);
    673 		}
    674 		x += parts->pscheme->edit_columns[col].width + 1;
    675 	}
    676 	wprintw(m->mw, "%s", line);
    677 }
    678 
    679 static int
    680 part_edit_abort(menudesc *m, void *arg)
    681 {
    682 	arg_rv *args = arg;
    683 
    684 	args->rv = -1;
    685 	return 0;
    686 }
    687 
    688 static menu_ent *
    689 outer_fill_part_menu_opts(const struct disk_partitions *parts, size_t *cnt)
    690 {
    691 	menu_ent *opts, *op;
    692 	size_t num_opts;
    693 	size_t i;
    694 	bool may_add;
    695 
    696 	may_add = parts->pscheme->can_add_partition(parts);
    697 	num_opts = 3 + parts->num_part;
    698 	if (parts->num_part == 0)
    699 		num_opts++;
    700 	if (may_add)
    701 		num_opts++;
    702 	opts = calloc(num_opts, sizeof *opts);
    703 	if (opts == NULL) {
    704 		*cnt = 0;
    705 		return NULL;
    706 	}
    707 
    708 	/* add all exisiting partitions */
    709 	for (op = opts, i = 0; i < parts->num_part && i < (num_opts-2);
    710 	    op++, i++) {
    711 		op->opt_name = NULL;
    712 		op->opt_exp_name = NULL;
    713 		op->opt_menu = OPT_NOMENU;
    714 		op->opt_flags = OPT_SUB;
    715 		op->opt_action = edit_part_entry;
    716 	}
    717 
    718 	/* if empty, hint that partitions are missing */
    719 	if (parts->num_part == 0) {
    720 		op->opt_name = MSG_nopart;
    721 		op->opt_exp_name = NULL;
    722 		op->opt_menu = OPT_NOMENU;
    723 		op->opt_flags = OPT_IGNORE|OPT_NOSHORT;
    724 		op++;
    725 	}
    726 
    727 	/* separator line between partitions and actions */
    728 	op->opt_name = outer_part_sep_line;
    729 	op->opt_exp_name = NULL;
    730 	op->opt_menu = OPT_NOMENU;
    731 	op->opt_flags = OPT_IGNORE|OPT_NOSHORT;
    732 	op++;
    733 
    734 	/* followed by new partition adder */
    735 	if (may_add) {
    736 		op->opt_name = MSG_addpart;
    737 		op->opt_exp_name = NULL;
    738 		op->opt_menu = OPT_NOMENU;
    739 		op->opt_flags = OPT_SUB;
    740 		op->opt_action = add_part_entry;
    741 		op++;
    742 	}
    743 
    744 	/* and unit changer */
    745 	op->opt_name = MSG_askunits;
    746 	op->opt_exp_name = NULL;
    747 	op->opt_menu = MENU_sizechoice;
    748 	op->opt_flags = OPT_SUB;
    749 	op->opt_action = NULL;
    750 	op++;
    751 
    752 	/* and abort option */
    753 	op->opt_name = MSG_cancel;
    754 	op->opt_exp_name = NULL;
    755 	op->opt_menu = OPT_NOMENU;
    756 	op->opt_flags = OPT_EXIT;
    757 	op->opt_action = part_edit_abort;
    758 	op++;
    759 
    760 	*cnt = num_opts;
    761 	return opts;
    762 }
    763 
    764 static void
    765 draw_outer_part_header(menudesc *m, void *arg)
    766 {
    767 	arg_rv *av = arg;
    768 	struct disk_partitions *parts = av->arg;
    769 	char start[SSTRSIZE], size[SSTRSIZE], col[SSTRSIZE],
    770 	    *disk_info, total[SSTRSIZE], avail[SSTRSIZE];
    771 	size_t sep;
    772 	const char *args[3];
    773 
    774 	msg_display_subst(MSG_editparttable, 4,
    775 	    parts->disk,
    776 	    msg_string(parts->pscheme->name),
    777 	    msg_string(parts->pscheme->short_name),
    778 	    parts->pscheme->part_flag_desc ?
    779 		msg_string(parts->pscheme->part_flag_desc)
    780 		: "");
    781 
    782 	snprintf(total, sizeof(total), "%" PRIu64 " %s",
    783 	    parts->disk_size / sizemult, multname);
    784 	snprintf(avail, sizeof(total), "%" PRIu64 " %s",
    785 	    parts->free_space / sizemult, multname);
    786 	args[0] = parts->disk;
    787 	args[1] = total;
    788 	args[2] = avail;
    789 	disk_info = str_arg_subst(msg_string(MSG_part_header), 3, args);
    790 	msg_table_add(disk_info);
    791 	free(disk_info);
    792 
    793 
    794 	strcpy(outer_part_sep_line, "------------- ------------- ----");
    795 	sep = strlen(outer_part_sep_line);
    796 	snprintf(start, sizeof(start), "%s(%s)",
    797 	    msg_string(MSG_part_header_col_start), multname);
    798 	snprintf(size, sizeof(size), "%s(%s)",
    799 	    msg_string(MSG_part_header_col_size), multname);
    800 	snprintf(outer_part_title, sizeof(outer_part_title),
    801 	    "   %13s %13s %-4s", start, size,
    802 	    msg_string(MSG_part_header_col_flag));
    803 
    804 	for (size_t i = 0; i < parts->pscheme->edit_columns_count; i++) {
    805 		char *np = outer_part_sep_line+sep;
    806 		unsigned int w = parts->pscheme->edit_columns[i].width;
    807 		snprintf(col, sizeof(col), " %*s", -w,
    808 		    msg_string(parts->pscheme->edit_columns[i].title));
    809 		strlcat(outer_part_title, col, sizeof(outer_part_title));
    810 		if (sep < sizeof(outer_part_sep_line)-1) {
    811 			*np++ = ' ';
    812 			sep++;
    813 		}
    814 		for (unsigned int p = 0; p < w &&
    815 		    sep < sizeof(outer_part_sep_line)-1; p++)
    816 			*np++ = '-', sep++;
    817 		*np = 0;
    818 	}
    819 
    820 	strlcat(outer_part_title, "\n   ", sizeof(outer_part_title));
    821 	strlcat(outer_part_title, outer_part_sep_line,
    822 	    sizeof(outer_part_title));
    823 
    824 	msg_table_add("\n\n");
    825 }
    826 
    827 /*
    828  * Use the whole disk for NetBSD, but (if any) create required helper
    829  * partitions (usually for booting and stuff).
    830  */
    831 bool
    832 parts_use_wholedisk(struct disk_partitions *parts,
    833     size_t add_ext_parts, const struct disk_part_info *ext_parts)
    834 {
    835 	part_id nbsd;
    836 	struct disk_part_info info;
    837 	struct disk_part_free_space space;
    838 	daddr_t align;
    839 	size_t i;
    840 
    841 	parts->pscheme->delete_all_partitions(parts);
    842 	align = parts->pscheme->get_part_alignment(parts);
    843 
    844 	if (ext_parts != NULL) {
    845 		for (i = 0; i < add_ext_parts; i++) {
    846 			info = ext_parts[i];
    847 			if (parts->pscheme->get_free_spaces(parts, &space,
    848 			    1, info.size, align, -1, -1) != 1)
    849 				return false;
    850 			info.start = space.start;
    851 			info.size = space.size;
    852 			if (parts->pscheme->add_partition(parts, &info, NULL)
    853 			    == NO_PART)
    854 				return false;
    855 		}
    856 	}
    857 
    858 	if (parts->pscheme->get_free_spaces(parts, &space, 1, 3*align,
    859 	    align, -1, -1) != 1)
    860 		return false;
    861 
    862 	memset(&info, 0, sizeof(info));
    863 	info.start = space.start;
    864 	info.size = space.size;
    865 	info.nat_type = parts->pscheme->get_generic_part_type(PT_root);
    866 	nbsd = parts->pscheme->add_partition(parts, &info, NULL);
    867 
    868 	if (nbsd == NO_PART)
    869 		return false;
    870 
    871 	if (!parts->pscheme->get_part_info(parts, nbsd, &info))
    872 		return false;
    873 
    874 	pm->ptstart = info.start;
    875 	pm->ptsize = info.size;
    876 	return true;
    877 }
    878 
    879 static int
    880 set_keep_existing(menudesc *m, void *arg)
    881 {
    882 	((arg_rep_int*)arg)->rv = LY_KEEPEXISTING;
    883 	return 0;
    884 }
    885 
    886 static int
    887 set_use_only_part(menudesc *m, void *arg)
    888 {
    889 	((arg_rep_int*)arg)->rv = LY_SETSIZES;
    890 	return 0;
    891 }
    892 
    893 static int
    894 set_use_entire_disk(menudesc *m, void *arg)
    895 {
    896 	((arg_rep_int*)arg)->rv = LY_USEFULL;
    897 	return 0;
    898 }
    899 
    900 static enum layout_type
    901 ask_fullpart(struct disk_partitions *parts)
    902 {
    903 	arg_rep_int ai;
    904 	const char *args[2];
    905 	int menu;
    906 	size_t num_opts;
    907 	menu_ent options[3], *opt;
    908 	daddr_t start, size;
    909 
    910 	args[0] = msg_string(pm->parts->pscheme->name);
    911 	args[1] = msg_string(pm->parts->pscheme->short_name);
    912 	ai.args.argv = args;
    913 	ai.args.argc = 2;
    914 	ai.rv = LY_SETSIZES;
    915 
    916 	memset(options, 0, sizeof(options));
    917 	num_opts = 0;
    918 	opt = &options[0];
    919 	if (parts->pscheme->guess_install_target != NULL &&
    920 	    parts->pscheme->guess_install_target(parts, &start, &size)) {
    921 		opt->opt_name = MSG_Keep_existing_partitions;
    922 		opt->opt_exp_name = NULL;
    923 		opt->opt_menu = OPT_NOMENU;
    924 		opt->opt_flags = OPT_EXIT;
    925 		opt->opt_action = set_keep_existing;
    926 		opt++;
    927 		num_opts++;
    928 	}
    929 	opt->opt_name = MSG_Use_only_part_of_the_disk;
    930 	opt->opt_exp_name = NULL;
    931 	opt->opt_menu = OPT_NOMENU;
    932 	opt->opt_flags = OPT_EXIT;
    933 	opt->opt_action = set_use_only_part;
    934 	opt++;
    935 	num_opts++;
    936 
    937 	opt->opt_name = MSG_Use_the_entire_disk;
    938 	opt->opt_exp_name = NULL;
    939 	opt->opt_menu = OPT_NOMENU;
    940 	opt->opt_flags = OPT_EXIT;
    941 	opt->opt_action = set_use_entire_disk;
    942 	opt++;
    943 	num_opts++;
    944 
    945 	menu = new_menu(MSG_Select_your_choice, options, num_opts,
    946 	    -1, -10, 0, 0, MC_NOEXITOPT, NULL, NULL, NULL, NULL, NULL);
    947 	if (menu != -1) {
    948 		get_menudesc(menu)->expand_act = expand_all_option_texts;
    949 		process_menu(menu, &ai);
    950 		free_menu(menu);
    951 	}
    952 
    953 	return ai.rv;
    954 }
    955 
    956 /*
    957  * return (see post_edit_verify):
    958  *  0 -> abort
    959  *  1 -> re-edit
    960  *  2 -> continue installation
    961  */
    962 static int
    963 verify_outer_parts(struct disk_partitions *parts, bool quiet)
    964 {
    965 	part_id i;
    966 	int num_bsdparts;
    967 	daddr_t first_bsdstart, first_bsdsize, inst_start, inst_size;
    968 
    969 	first_bsdstart = first_bsdsize = 0;
    970 	inst_start = inst_size = 0;
    971 	num_bsdparts = 0;
    972 	for (i = 0; i < parts->num_part; i++) {
    973 		struct disk_part_info info;
    974 		if (!parts->pscheme->get_part_info(parts, i, &info))
    975 			continue;
    976 		if (!(info.flags & PTI_SEC_CONTAINER))
    977 			continue;
    978 		if (info.nat_type->generic_ptype != PT_root)
    979 			continue;
    980 		num_bsdparts++;
    981 
    982 		if (first_bsdstart == 0) {
    983 			first_bsdstart = info.start;
    984 			first_bsdsize = info.size;
    985 		}
    986 		if (inst_start == 0 && info.start == pm->ptstart) {
    987 			inst_start = info.start;
    988 			inst_size = info.size;
    989 		}
    990 	}
    991 
    992 	if (num_bsdparts == 0 ||
    993 	    (num_bsdparts > 1 && inst_start == 0)) {
    994 		if (quiet && num_bsdparts == 0)
    995 			return 0;
    996 		if (quiet && parts->pscheme->guess_install_target &&
    997 		    parts->pscheme->guess_install_target(parts,
    998 		    &inst_start, &inst_size)) {
    999 			pm->ptstart = inst_start;
   1000 			pm->ptsize = inst_size;
   1001 		} else {
   1002 			if (num_bsdparts == 0)
   1003 				msg_display_subst(MSG_nobsdpart, 2,
   1004 				    msg_string(parts->pscheme->name),
   1005 				    msg_string(parts->pscheme->short_name));
   1006 			else
   1007 				msg_display_subst(MSG_multbsdpart, 2,
   1008 				    msg_string(parts->pscheme->name),
   1009 				    msg_string(parts->pscheme->short_name));
   1010 
   1011 			return ask_reedit(parts);
   1012 		}
   1013 	}
   1014 
   1015 	if (pm->ptstart == 0) {
   1016 		if (inst_start > 0) {
   1017 			pm->ptstart = inst_start;
   1018 			pm->ptsize = inst_size;
   1019 		} else if (first_bsdstart > 0) {
   1020 			pm->ptstart = first_bsdstart;
   1021 			pm->ptsize = first_bsdsize;
   1022 		} else if (parts->pscheme->guess_install_target &&
   1023 			   parts->pscheme->guess_install_target(
   1024 			   parts, &inst_start, &inst_size)) {
   1025 			pm->ptstart = inst_start;
   1026 			pm->ptsize = inst_size;
   1027 		}
   1028 	}
   1029 
   1030 	/*
   1031 	 * post_edit_verify returns:
   1032 	 *  0 -> abort
   1033 	 *  1 -> re-edit
   1034 	 *  2 -> continue installation
   1035 	 */
   1036 	if (parts->pscheme->post_edit_verify)
   1037 		return parts->pscheme->post_edit_verify(parts, quiet);
   1038 
   1039 	return 2;
   1040 }
   1041 
   1042 static bool
   1043 ask_outer_partsizes(struct disk_partitions *parts)
   1044 {
   1045 	int j;
   1046 	int part_menu;
   1047 	size_t num_opts;
   1048 	arg_rv av;
   1049 
   1050 	part_menu_opts = outer_fill_part_menu_opts(parts, &num_opts);
   1051 	part_menu = new_menu(outer_part_title, part_menu_opts, num_opts,
   1052 			0, -1, 15, 70,
   1053 			MC_NOBOX|MC_ALWAYS_SCROLL|MC_NOCLEAR|MC_CONTINUOUS,
   1054 			draw_outer_part_header, draw_outer_part_line, NULL,
   1055 			NULL, MSG_Partition_table_ok);
   1056 	if (part_menu == -1) {
   1057 		free(part_menu_opts);
   1058 		return false;
   1059 	}
   1060 
   1061 	/* Default to MB, and use bios geometry for cylinder size */
   1062 	set_default_sizemult(MEG/512);
   1063 	if (pm->current_cylsize == 0)
   1064 		pm->current_cylsize = 16065;	/* noone cares nowadays */
   1065 	pm->ptstart = 0;
   1066 	pm->ptsize = 0;
   1067 	av.rv = 0;
   1068 
   1069 	for (;;) {
   1070 		av.arg = parts;
   1071 		av.rv = 0;
   1072 		process_menu(part_menu, &av);
   1073 		if (av.rv < 0)
   1074 			break;
   1075 
   1076 		j = verify_outer_parts(parts, false);
   1077 		if (j == 0) {
   1078 			av.rv = -1;
   1079 			return false;
   1080 		} else if (j == 1) {
   1081 			continue;
   1082 		}
   1083 		break;
   1084 	}
   1085 
   1086 	free_menu(part_menu);
   1087 	free(part_menu_opts);
   1088 
   1089 	return av.rv == 0;
   1090 }
   1091 
   1092 bool
   1093 edit_outer_parts(struct disk_partitions *parts)
   1094 {
   1095 	part_id i;
   1096 	enum layout_type layout;
   1097 	int num_foreign_parts;
   1098 
   1099 	/* If targeting a wedge, do not ask for further partitioning */
   1100 	if (pm && (pm->no_part || pm->no_mbr))
   1101 		return true;
   1102 
   1103 	/* Make sure pm has been properly initialized */
   1104 	assert(pm->parts && pm->parts->pscheme);
   1105 
   1106 	if (partman_go)
   1107 		layout = LY_SETSIZES;
   1108 	else {
   1109 		/* Ask full/part */
   1110 		const struct disk_partitioning_scheme *sec =
   1111 		    pm->parts->pscheme->secondary_scheme;
   1112 
   1113 		assert(sec != NULL);
   1114 
   1115 		uint64_t m_size =
   1116 		    DEFROOTSIZE + DEFSWAPSIZE + DEFUSRSIZE + XNEEDMB;
   1117 		char min_size[5], build_size[5];
   1118 		const char
   1119 		    *prim_name = msg_string(pm->parts->pscheme->name),
   1120 		    *prim_short = msg_string(pm->parts->pscheme->short_name),
   1121 		    *sec_name = msg_string(sec->name),
   1122 		    *sec_short = msg_string(sec->short_name);
   1123 
   1124 		humanize_number(min_size, sizeof(min_size),
   1125 		    2 * m_size * MEG,
   1126 		    "", HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
   1127 		humanize_number(build_size, sizeof(build_size),
   1128 		     SYSTEM_BUILD_SIZE * MEG, "", HN_AUTOSCALE,
   1129 		     HN_B | HN_NOSPACE | HN_DECIMAL);
   1130 
   1131 		msg_display_subst(MSG_fullpart, 7,
   1132 		    pm->diskdev,
   1133 		    prim_name, sec_name,
   1134 		    prim_short, sec_short,
   1135 		    min_size, build_size);
   1136 		msg_display_add("\n\n");
   1137 
   1138 		layout = ask_fullpart(pm->parts);
   1139 	}
   1140 
   1141 	if (layout == LY_USEFULL) {
   1142 		struct disk_part_info info;
   1143 
   1144 		/* Count nonempty, non-BSD partitions. */
   1145 		num_foreign_parts = 0;
   1146 		for (i = 0; i < parts->num_part; i++) {
   1147 			if (!parts->pscheme->get_part_info(parts, i, &info))
   1148 				continue;
   1149 			if (info.size == 0)
   1150 				continue;
   1151 			if (info.nat_type != NULL
   1152 			    && info.nat_type->generic_ptype != PT_root
   1153 			    && info.nat_type->generic_ptype != PT_swap)
   1154 				num_foreign_parts++;
   1155 		}
   1156 
   1157 		/* Ask if we really want to blow away non-NetBSD stuff */
   1158 		if (num_foreign_parts > 0) {
   1159 			msg_display(MSG_ovrwrite);
   1160 			if (!ask_noyes(NULL)) {
   1161 				if (logfp)
   1162 					(void)fprintf(logfp,
   1163 					    "User answered no to destroy "
   1164 					    "other data, aborting.\n");
   1165 				return false;
   1166 			}
   1167 		}
   1168 		if (!md_parts_use_wholedisk(parts))
   1169 			return false;
   1170 		if (parts->pscheme->post_edit_verify) {
   1171 			return
   1172 			    parts->pscheme->post_edit_verify(parts, true) == 2;
   1173 		}
   1174 		return true;
   1175 	} else if (layout == LY_SETSIZES) {
   1176 		return ask_outer_partsizes(parts);
   1177 	} else {
   1178 		return verify_outer_parts(parts, true) == 2;
   1179 	}
   1180 }
   1181 
   1182 static int
   1183 set_part_scheme(menudesc *m, void *arg)
   1184 {
   1185 	size_t *res = arg;
   1186 
   1187 	*res = (size_t)m->cursel;
   1188 	return 1;
   1189 }
   1190 
   1191 const struct disk_partitioning_scheme *
   1192 select_part_scheme(
   1193 	struct pm_devs *dev,
   1194 	const struct disk_partitioning_scheme *skip,
   1195 	bool bootable,
   1196 	const char *hdr)
   1197 {
   1198 	int ps_menu = -1;
   1199 	menu_ent *opt;
   1200 	char **str, *ms = NULL;
   1201 	const struct disk_partitioning_scheme **options, *res;
   1202 	const char *title;
   1203 	size_t ndx, selected = ~0U, used;
   1204 	const struct disk_partitioning_scheme *p;
   1205 	bool showing_limit = false;
   1206 
   1207 	if (hdr == NULL)
   1208 		hdr = MSG_select_part_scheme;
   1209 
   1210 	opt = calloc(num_available_part_schemes, sizeof *opt);
   1211 	if (!opt)
   1212 		return NULL;
   1213 	str = calloc(num_available_part_schemes, sizeof *str);
   1214 	if (!str) {
   1215 		free(opt);
   1216 		return NULL;
   1217 	}
   1218 	options = calloc(num_available_part_schemes, sizeof *options);
   1219 	if (!options) {
   1220 		free(str);
   1221 		free(opt);
   1222 		return NULL;
   1223 	}
   1224 
   1225 	for (used = 0, ndx = 0; ndx < num_available_part_schemes; ndx++) {
   1226 		p = available_part_schemes[ndx];
   1227 		if (skip != NULL && p == skip)
   1228 			continue;
   1229 		if (bootable && p->have_boot_support != NULL &&
   1230 		    !p->have_boot_support(dev->diskdev))
   1231 			continue;
   1232 		if (p->size_limit && dev->dlsize > p->size_limit) {
   1233 			char buf[255], hum_lim[5];
   1234 
   1235 			humanize_number(hum_lim, sizeof(hum_lim),
   1236 			    (uint64_t)p->size_limit*512UL,
   1237 			    "", HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
   1238 			sprintf(buf, "%s [%s %s]", msg_string(p->name),
   1239 			    msg_string(MSG_size_limit), hum_lim);
   1240 			str[used] = strdup(buf);
   1241 			showing_limit = true;
   1242 		} else {
   1243 			str[used] = strdup(msg_string(p->name));
   1244 		}
   1245 		if (!str[used])
   1246 			goto out;
   1247 
   1248 		opt[used].opt_name = str[used];
   1249 		opt[used].opt_exp_name = NULL;
   1250 		opt[used].opt_menu = OPT_NOMENU;
   1251 		opt[used].opt_action = set_part_scheme;
   1252 		options[used] = p;
   1253 		used++;
   1254 	}
   1255 
   1256 	/* do not bother to ask if there are no options */
   1257 	if (used <= 1) {
   1258 		selected = (used == 1) ? 0 : ~0U;
   1259 		goto out;
   1260 	}
   1261 
   1262 	if (showing_limit) {
   1263 		char hum_lim[5], *tmp;
   1264 		size_t total;
   1265 
   1266 		const char *p1 = msg_string(hdr);
   1267 		const char *p2 = msg_string(MSG_select_part_limit);
   1268 
   1269 		humanize_number(hum_lim, sizeof(hum_lim),
   1270 		    (uint64_t)dev->dlsize*512, "",
   1271 		    HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
   1272 
   1273 		const char *args[] = { dev->diskdev, hum_lim };
   1274 		char *p3 = str_arg_subst(msg_string(MSG_part_limit_disksize),
   1275 		    __arraycount(args), args);
   1276 
   1277 		total = strlen(p1) + strlen(p2) + strlen(p3)
   1278 		    + sizeof(hum_lim) + 5;
   1279 		ms = tmp = malloc(total);
   1280 		title = tmp;
   1281 		strcpy(tmp, p1); tmp += strlen(p1);
   1282 		*tmp++ = '\n'; *tmp++ = '\n';
   1283 		strcpy(tmp, p2); tmp += strlen(p2);
   1284 		*tmp++ = '\n'; *tmp++ = '\n';
   1285 		strcpy(tmp, p3);
   1286 		free(p3);
   1287 		assert(strlen(ms) < total);
   1288 	} else {
   1289 		title = msg_string(hdr);
   1290 	}
   1291 	ps_menu = new_menu(title, opt, used,
   1292 	    5, 5, 0, 0, 0, NULL, NULL, NULL, NULL, MSG_exit_menu_generic);
   1293 	if (ps_menu != -1)
   1294 		process_menu(ps_menu, &selected);
   1295 out:
   1296 	res = selected >= used ? NULL : options[selected];
   1297 	for (ndx = 0; ndx < used; ndx++)
   1298 		free(str[ndx]);
   1299 	if (showing_limit && ms)
   1300 		free(ms);
   1301 	free(str);
   1302 	free(opt);
   1303 	free(options);
   1304 	if (ps_menu != -1)
   1305 		free_menu(ps_menu);
   1306 
   1307 	return res;
   1308 }
   1309