1 /*
2  * Copyright (c)2004 The DragonFly Project.  All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  *   Redistributions of source code must retain the above copyright
9  *   notice, this list of conditions and the following disclaimer.
10  *
11  *   Redistributions in binary form must reproduce the above copyright
12  *   notice, this list of conditions and the following disclaimer in
13  *   the documentation and/or other materials provided with the
14  *   distribution.
15  *
16  *   Neither the name of the DragonFly Project nor the names of its
17  *   contributors may be used to endorse or promote products derived
18  *   from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31  * OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 /*
35  * fn_subpart.c
36  * Installer Function : Create Subpartitions.
37  * $Id: fn_subpart.c,v 1.50 2005/04/07 20:22:40 cpressey Exp $
38  */
39 
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 
44 #ifdef ENABLE_NLS
45 #include <libintl.h>
46 #define _(String) gettext (String)
47 #else
48 #define _(String) (String)
49 #endif
50 
51 #include "libaura/mem.h"
52 #include "libaura/buffer.h"
53 #include "libaura/dict.h"
54 #include "libaura/fspred.h"
55 
56 #include "libdfui/dfui.h"
57 #include "libdfui/dump.h"
58 #include "libdfui/system.h"
59 
60 #include "libinstaller/commands.h"
61 #include "libinstaller/diskutil.h"
62 #include "libinstaller/functions.h"
63 #include "libinstaller/uiutil.h"
64 
65 #include "fn.h"
66 #include "flow.h"
67 #include "pathnames.h"
68 
69 static int	create_subpartitions(struct i_fn_args *);
70 static long	default_capacity(struct storage *, int);
71 static int	check_capacity(struct i_fn_args *);
72 static int	check_subpartition_selections(struct dfui_response *, struct i_fn_args *);
73 static void	save_subpartition_selections(struct dfui_response *, struct i_fn_args *);
74 static void	populate_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
75 static int	warn_subpartition_selections(struct i_fn_args *);
76 static struct dfui_form *make_create_subpartitions_form(struct i_fn_args *);
77 static int	show_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
78 
79 static const char *def_mountpt[]  = {"/", "swap", "/var", "/tmp", "/usr", "/home", NULL};
80 static int expert = 0;
81 
82 /*
83  * Given a set of subpartitions-to-be in the selected slice,
84  * create them.
85  */
86 static int
87 create_subpartitions(struct i_fn_args *a)
88 {
89 	struct subpartition *sp;
90 	struct commands *cmds;
91 	int result = 0;
92 	int num_partitions;
93 
94 	cmds = commands_new();
95 	if (!is_file("%sinstall.disklabel.%s",
96 	    a->tmp,
97 	    slice_get_device_name(storage_get_selected_slice(a->s)))) {
98 		/*
99 		 * Get a copy of the 'virgin' disklabel.
100 		 * XXX It might make more sense for this to
101 		 * happen right after format_slice() instead.
102 		 */
103 		command_add(cmds, "%s%s -r %s >%sinstall.disklabel.%s",
104 		    a->os_root, cmd_name(a, "DISKLABEL64"),
105 		    slice_get_device_name(storage_get_selected_slice(a->s)),
106 		    a->tmp,
107 		    slice_get_device_name(storage_get_selected_slice(a->s)));
108 	}
109 
110 	/*
111 	 * Weave together a new disklabel out the of the 'virgin'
112 	 * disklabel, and the user's subpartition choices.
113 	 */
114 
115 	/*
116 	 * Take everything from the 'virgin' disklabel up until the
117 	 * '16 partitions' line.
118 	 */
119 	num_partitions = 16;
120 	command_add(cmds, "%s%s '$2==\"partitions:\" || cut { cut = 1 } !cut { print $0 }' <%sinstall.disklabel.%s >%sinstall.disklabel",
121 	    a->os_root, cmd_name(a, "AWK"),
122 	    a->tmp,
123 	    slice_get_device_name(storage_get_selected_slice(a->s)),
124 	    a->tmp);
125 
126 	/*
127 	 * 16 partitions:
128 	 * #          size     offset    fstype
129 	 *   c:   16383969          0    unused	#    7999.985MB
130 	 */
131 
132 	command_add(cmds, "%s%s '%d partitions:' >>%sinstall.disklabel",
133 	    a->os_root, cmd_name(a, "ECHO"), num_partitions ,a->tmp);
134 	command_add(cmds, "%s%s '%s' >>%sinstall.disklabel",
135 	    a->os_root, cmd_name(a, "ECHO"),
136 	    "#          size     offset    fstype",
137 	    a->tmp);
138 
139 #ifdef DEBUG
140 	for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
141 	     sp != NULL; sp = subpartition_next(sp)) {
142 		command_add(cmds, "%s%s 'mountpoint: %s device: %s'",
143 		     a->os_root, cmd_name(a, "ECHO"),
144 		     subpartition_get_mountpoint(sp),
145 		     subpartition_get_device_name(sp));
146 	}
147 #endif
148 
149 	/*
150 	 * Write a line for each subpartition the user wants.
151 	 */
152 	for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
153 	     sp != NULL; sp = subpartition_next(sp)) {
154 		if (subpartition_is_mfsbacked(sp)) {
155 			continue;
156 		}
157 		if (subpartition_is_swap(sp)) {
158 			command_add(cmds, "%s%s '  %c:\t%s\t*\tswap' >>%sinstall.disklabel",
159 			    a->os_root, cmd_name(a, "ECHO"),
160 			    subpartition_get_letter(sp),
161 			    capacity_to_string(subpartition_get_capacity(sp)),
162 			    a->tmp);
163 		} else {
164 			command_add(cmds, "%s%s '  %c:\t%s\t%s\t4.2BSD' >>%sinstall.disklabel",
165 			    a->os_root, cmd_name(a, "ECHO"),
166 			    subpartition_get_letter(sp),
167 			    capacity_to_string(subpartition_get_capacity(sp)),
168 			    subpartition_get_letter(sp) == 'a' ? "0" : "*",
169 			    a->tmp);
170 		}
171 	}
172 	temp_file_add(a, "install.disklabel");
173 
174 	/*
175 	 * Label the slice from the disklabel we just wove together.
176 	 */
177 	command_add(cmds, "%s%s -R -B -r %s %sinstall.disklabel",
178 	    a->os_root, cmd_name(a, "DISKLABEL64"),
179 	    slice_get_device_name(storage_get_selected_slice(a->s)),
180 	    a->tmp);
181 
182 	/*
183 	 * Create a snapshot of the disklabel we just created
184 	 * for debugging inspection in the log.
185 	 */
186 	command_add(cmds, "%s%s %s",
187 	    a->os_root, cmd_name(a, "DISKLABEL64"),
188 	    slice_get_device_name(storage_get_selected_slice(a->s)));
189 
190 	/*
191 	 * Create filesystems on the newly-created subpartitions.
192 	 */
193 	for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
194 	     sp != NULL; sp = subpartition_next(sp)) {
195 		if (subpartition_is_swap(sp) || subpartition_is_mfsbacked(sp))
196 			continue;
197 
198 		command_add(cmds, "%s%s%s -b %ld -f %ld %sdev/%s",
199 		    a->os_root, cmd_name(a, "NEWFS"),
200 		    subpartition_is_softupdated(sp) ? " -U" : "",
201 		    subpartition_get_bsize(sp),
202 		    subpartition_get_fsize(sp),
203 		    a->os_root,
204 		    subpartition_get_device_name(sp));
205 	}
206 
207 	result = commands_execute(a, cmds);
208 	commands_free(cmds);
209 	return(result);
210 }
211 
212 static long
213 default_capacity(struct storage *s, int mtpt)
214 {
215 	unsigned long swap;
216 	unsigned long capacity;
217 	unsigned long mem;
218 
219 	if (mtpt == MTPT_HOME)
220 		return(-1);
221 
222 	capacity = slice_get_capacity(storage_get_selected_slice(s));
223 	mem = storage_get_memsize(s);
224 	swap = 2 * mem;
225 	if (mem > (capacity / 2) || capacity < 4096)
226 		swap = mem;
227 	if (mem > capacity)
228 		swap = capacity / 2;
229 	if (swap > 8192)
230 		swap = 8192;
231 
232 	if (capacity < DISK_MIN) {
233 		/*
234 		 * For the purposes of this installer:
235 		 * can't be done.  Sorry.
236 		 */
237 		return(-1);
238 	} else if (capacity < 4096) {
239 		switch (mtpt) {
240 		case MTPT_ROOT:	return(256);
241 		case MTPT_SWAP: return(swap);
242 		case MTPT_VAR:	return(128);
243 		case MTPT_TMP:	return(128);
244 		case MTPT_USR:	return(1536);
245 		}
246 	} else if (capacity < 10240) {
247 		switch (mtpt) {
248 		case MTPT_ROOT:	return(256);
249 		case MTPT_SWAP: return(swap);
250 		case MTPT_VAR:	return(256);
251 		case MTPT_TMP:	return(256);
252 		case MTPT_USR:	return(3072);
253 		}
254 	} else {
255 		switch (mtpt) {
256 		case MTPT_ROOT:	return(256);
257 		case MTPT_SWAP: return(swap);
258 		case MTPT_VAR:	return(256);
259 		case MTPT_TMP:	return(256);
260 		case MTPT_USR:	return(8192);
261 		}
262 	}
263 	/* shouldn't ever happen */
264 	return(-1);
265 }
266 
267 static int
268 check_capacity(struct i_fn_args *a)
269 {
270 	struct subpartition *sp;
271 	unsigned long min_capacity[] = {256, 0, 16, 0, 1536, 0, 0};
272 	unsigned long total_capacity = 0;
273 	int mtpt;
274 
275 	if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL)
276 		min_capacity[MTPT_ROOT] += min_capacity[MTPT_USR];
277 
278 	for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
279 	     sp != NULL; sp = subpartition_next(sp)) {
280 		if (subpartition_get_capacity(sp) == -1)
281 			total_capacity++;
282 		else
283 			total_capacity += subpartition_get_capacity(sp);
284 		for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
285 			if (strcmp(subpartition_get_mountpoint(sp), def_mountpt[mtpt]) == 0 &&
286 			    min_capacity[mtpt] > 0 &&
287 			    subpartition_get_capacity(sp) < min_capacity[mtpt]) {
288 				inform(a->c, _("WARNING: the %s subpartition should "
289 				    "be at least %dM in size or you will "
290 				    "risk running out of space during "
291 				    "the installation."),
292 				    subpartition_get_mountpoint(sp), min_capacity[mtpt]);
293 			}
294 		}
295 	}
296 
297 	if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
298 		inform(a->c, _("The space allocated to all of your selected "
299 		    "subpartitions (%dM) exceeds the total "
300 		    "capacity of the selected primary partition "
301 		    "(%dM). Remove some subpartitions or choose "
302 		    "a smaller size for them and try again."),
303 		    total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
304 		return(0);
305 	}
306 
307 	return(1);
308 }
309 
310 static int
311 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
312 {
313 	struct dfui_dataset *ds;
314 	struct dfui_dataset *star_ds = NULL;
315 	struct aura_dict *d;
316 	const char *mountpoint, *capstring;
317 	long capacity = 0;
318 	long bsize, fsize;
319 	int found_root = 0;
320 	int softupdates, mfsbacked;
321 	int valid = 1;
322 
323 	d = aura_dict_new(1, AURA_DICT_LIST);
324 
325 	if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
326 		inform(a->c, _("Please set up at least one subpartition."));
327 		valid = 0;
328 	}
329 
330 	for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
331 	    ds = dfui_dataset_get_next(ds)) {
332 #ifdef DEBUG
333 		dfui_dataset_dump(ds);
334 #endif
335 		mountpoint = dfui_dataset_get_value(ds, "mountpoint");
336 		capstring = dfui_dataset_get_value(ds, "capacity");
337 
338 		if (expert) {
339 			softupdates =
340 			    (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
341 			fsize = atol(dfui_dataset_get_value(ds, "fsize"));
342 			bsize = atol(dfui_dataset_get_value(ds, "bsize"));
343 			mfsbacked = (strcmp(dfui_dataset_get_value(ds, "mfsbacked"), "Y") == 0);
344 		} else {
345 			softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
346 			mfsbacked = (strcmp(mountpoint, "/tmp") == 0 ? 0 : 1);
347 			fsize = -1;
348 			bsize = -1;
349 		}
350 
351 		if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
352 			inform(a->c, _("The same mount point cannot be specified "
353 			    "for two different subpartitions."));
354 			valid = 0;
355 		}
356 
357 		if (strcmp(mountpoint, "/") == 0)
358 			found_root = 1;
359 
360 		if (strcmp(capstring, "*") == 0) {
361 			if (star_ds != NULL) {
362 				inform(a->c, _("You cannot have more than one subpartition "
363 				    "with a '*' capacity (meaning 'use the remainder "
364 				    "of the primary partition'.)"));
365 				valid = 0;
366 			} else {
367 				star_ds = ds;
368 			}
369 		}
370 
371 		if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
372 			inform(a->c, _("Mount point must be either 'swap', or it must "
373 			    "start with a '/'."));
374 			valid = 0;
375 		}
376 
377 		if (strpbrk(mountpoint, " \\\"'`") != NULL) {
378 			inform(a->c, _("Mount point may not contain the following "
379 			    "characters: blank space, backslash, or "
380 			    "single, double, or back quotes."));
381 			valid = 0;
382 		}
383 
384 		if (strlen(capstring) == 0) {
385 			inform(a->c, _("A capacity must be specified."));
386 			valid = 0;
387 		}
388 
389 		if (!string_to_capacity(capstring, &capacity)) {
390 			inform(a->c, _("Capacity must be either a '*' symbol to indicate "
391 			    "'use the rest of the primary partition', or it "
392 			    "must be a series of decimal digits ending with a "
393 			    "'M' (indicating megabytes) or a 'G' (indicating "
394 			    "gigabytes.)"));
395 			valid = 0;
396 		}
397 
398 		if ((strcasecmp(mountpoint, "swap") == 0) && (capacity > 8192)) {
399 			inform(a->c, _("Swap capacity is limited to 8G."));
400 			valid = 0;
401 		}
402 
403 		/*
404 		 * If we made it through that obstacle course, all is well.
405 		 */
406 
407 		if (valid)
408 			aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
409 	}
410 
411 	if (!found_root) {
412 		inform(a->c, _("You must include a / (root) subpartition."));
413 		valid = 0;
414 	}
415 
416 	if (aura_dict_size(d) > 16) {
417 		inform(a->c, _("You cannot have more than 16 subpartitions "
418 		    "on a single primary partition.  Remove some "
419 		    "and try again."));
420 		valid = 0;
421 	}
422 
423 	aura_dict_free(d);
424 
425 	return(valid);
426 }
427 
428 static void
429 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
430 {
431 	struct dfui_dataset *ds;
432 	char mfsbacked;
433 	const char *mountpoint, *capstring;
434 	long capacity;
435 	long bsize, fsize;
436 	int softupdates;
437 	int valid = 1;
438 
439 	subpartitions_free(storage_get_selected_slice(a->s));
440 
441 	for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
442 	    ds = dfui_dataset_get_next(ds)) {
443 		mountpoint = dfui_dataset_get_value(ds, "mountpoint");
444 		capstring = dfui_dataset_get_value(ds, "capacity");
445 
446 		if (expert) {
447 			softupdates =
448 			    (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
449 			fsize = atol(dfui_dataset_get_value(ds, "fsize"));
450 			bsize = atol(dfui_dataset_get_value(ds, "bsize"));
451 			mfsbacked = (strcmp(dfui_dataset_get_value(ds, "mfsbacked"), "Y") == 0);
452 		} else {
453 			softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
454 			mfsbacked = 0;
455 			fsize = -1;
456 			bsize = -1;
457 		}
458 
459 		if (string_to_capacity(capstring, &capacity)) {
460 			subpartition_new(storage_get_selected_slice(a->s), mountpoint, capacity,
461 			    softupdates, fsize, bsize, mfsbacked);
462 		}
463 	}
464 }
465 
466 static void
467 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
468 {
469 	struct subpartition *sp;
470 	struct dfui_dataset *ds;
471 	char temp[32];
472 	int mtpt;
473 	long capacity;
474 
475 	if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
476 		/*
477 		 * The user has already given us their subpartition
478 		 * preferences, so use them here.
479 		 */
480 		for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
481 		     sp != NULL; sp = subpartition_next(sp)) {
482 			ds = dfui_dataset_new();
483 			dfui_dataset_celldata_add(ds, "mountpoint",
484 			    subpartition_get_mountpoint(sp));
485 			dfui_dataset_celldata_add(ds, "capacity",
486 			    capacity_to_string(subpartition_get_capacity(sp)));
487 			if (expert) {
488 				dfui_dataset_celldata_add(ds, "softupdates",
489 				    subpartition_is_softupdated(sp) ? "Y" : "N");
490 				dfui_dataset_celldata_add(ds, "mfsbacked",
491 				    subpartition_is_mfsbacked(sp) ? "Y" : "N");
492 				snprintf(temp, 32, "%ld", subpartition_get_fsize(sp));
493 				dfui_dataset_celldata_add(ds, "fsize",
494 				    temp);
495 				snprintf(temp, 32, "%ld", subpartition_get_bsize(sp));
496 				dfui_dataset_celldata_add(ds, "bsize",
497 				    temp);
498 			}
499 			dfui_form_dataset_add(f, ds);
500 		}
501 	} else {
502 		/*
503 		 * Otherwise, populate the form with datasets representing
504 		 * reasonably-calculated defaults.  The defaults are chosen
505 		 * based on the slice's total capacity and the machine's
506 		 * total physical memory (for swap.)
507 		 */
508 		for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
509 			capacity = default_capacity(a->s, mtpt);
510 			ds = dfui_dataset_new();
511 			dfui_dataset_celldata_add(ds, "mountpoint",
512 			    def_mountpt[mtpt]);
513 			dfui_dataset_celldata_add(ds, "capacity",
514 			    capacity_to_string(capacity));
515 			if (expert) {
516 				dfui_dataset_celldata_add(ds, "softupdates",
517 				    strcmp(def_mountpt[mtpt], "/") != 0 ? "Y" : "N");
518 				dfui_dataset_celldata_add(ds, "mfsbacked",
519 				    "N");
520 				dfui_dataset_celldata_add(ds, "fsize",
521 				    capacity < 1024 ? "1024" : "2048");
522 				dfui_dataset_celldata_add(ds, "bsize",
523 				    capacity < 1024 ? "8192" : "16384");
524 			}
525 			dfui_form_dataset_add(f, ds);
526 		}
527 	}
528 }
529 
530 static int
531 warn_subpartition_selections(struct i_fn_args *a)
532 {
533 	int valid = 0;
534 	struct aura_buffer *omit, *consequences;
535 
536 	omit = aura_buffer_new(2048);
537 	consequences = aura_buffer_new(2048);
538 
539 	valid = check_capacity(a);
540 	if (subpartition_find(storage_get_selected_slice(a->s), "/var") == NULL) {
541 		aura_buffer_cat(omit, "/var ");
542 		aura_buffer_cat(consequences, _("/var will be a plain dir in /\n"));
543 	}
544 	if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL) {
545 		aura_buffer_cat(omit, "/usr ");
546 		aura_buffer_cat(consequences, _("/usr will be a plain dir in /\n"));
547 	}
548         if (subpartition_find(storage_get_selected_slice(a->s), "/tmp") == NULL) {
549                 aura_buffer_cat(omit, "/tmp ");
550 		aura_buffer_cat(consequences, _("/tmp will be symlinked to /var/tmp\n"));
551 	}
552         if (subpartition_find(storage_get_selected_slice(a->s), "/home") == NULL) {
553                 aura_buffer_cat(omit, "/home ");
554 		aura_buffer_cat(consequences, _("/home will be symlinked to /usr/home\n"));
555 	}
556 
557 	if (valid && aura_buffer_len(omit) > 0) {
558 		switch (dfui_be_present_dialog(a->c, _("Really omit?"),
559 		    _("Omit Subpartition(s)|Return to Create Subpartitions"),
560 		    _("You have elected to not have the following "
561 		    "subpartition(s):\n\n%s\n\n"
562 		    "The ramifications of these subpartition(s) being "
563 		    "missing will be:\n\n%s\n"
564 		    "Is this really what you want to do?"),
565 		    aura_buffer_buf(omit), aura_buffer_buf(consequences))) {
566 		case 1:
567 			valid = 1;
568 			break;
569 		case 2:
570 			valid = 0;
571 			break;
572 		default:
573 			abort_backend();
574 		}
575 	}
576 
577 	aura_buffer_free(omit);
578 	aura_buffer_free(consequences);
579 
580 	return(!valid);
581 }
582 
583 static struct dfui_form *
584 make_create_subpartitions_form(struct i_fn_args *a)
585 {
586 	struct dfui_field *fi;
587 	struct dfui_form *f;
588 	char msg_buf[1][1024];
589 
590 	snprintf(msg_buf[0], sizeof(msg_buf[0]),
591 	    _("Subpartitions further divide a primary partition for "
592 	    "use with %s.  Some reasons you may want "
593 	    "a set of subpartitions are:\n\n"
594 	    "- you want to restrict how much data can be written "
595 	    "to certain parts of the primary partition, to quell "
596 	    "denial-of-service attacks; and\n"
597 	    "- you want to speed up access to data on the disk."
598 	    ""), OPERATING_SYSTEM_NAME);
599 
600 	f = dfui_form_create(
601 	    "create_subpartitions",
602 	    _("Create Subpartitions"),
603 	    _("Set up the subpartitions (also known as just `partitions' "
604 	    "in BSD tradition) you want to have on this primary "
605 	    "partition.\n\n"
606 	    "For Capacity, use 'M' to indicate megabytes, 'G' to "
607 	    "indicate gigabytes, or a single '*' to indicate "
608 	    "'use the remaining space on the primary partition'."),
609 
610 	    msg_buf[0],
611 
612 	    "p", "special", "dfinstaller_create_subpartitions",
613 	    "p", "minimum_width","64",
614 
615 	    "f", "mountpoint", _("Mountpoint"), "", "",
616 	    "f", "capacity", _("Capacity"), "", "",
617 
618 	    "a", "ok", _("Accept and Create"), "", "",
619 	    "a", "cancel",
620 	    (disk_get_formatted(storage_get_selected_disk(a->s)) ?
621 	    _("Return to Select Disk") :
622 	    _("Return to Select Primary Partition")), "", "",
623 	    "p", "accelerator", "ESC",
624 
625 	    NULL
626 	);
627 
628 	dfui_form_set_multiple(f, 1);
629 	dfui_form_set_extensible(f, 1);
630 
631 	if (expert) {
632 		fi = dfui_form_field_add(f, "softupdates",
633 		    dfui_info_new(_("Softupdates"), "", ""));
634 		dfui_field_property_set(fi, "control", "checkbox");
635 
636 		fi = dfui_form_field_add(f, "mfsbacked",
637 		    dfui_info_new(_("MFS"), "", ""));
638 		dfui_field_property_set(fi, "control", "checkbox");
639 
640 		fi = dfui_form_field_add(f, "fsize",
641 		    dfui_info_new(_("Frag Sz"), "", ""));
642 
643 		fi = dfui_form_field_add(f, "bsize",
644 		    dfui_info_new(_("Block Sz"), "", ""));
645 
646 		dfui_form_action_add(f, "switch",
647 		    dfui_info_new(_("Switch to Normal Mode"), "", ""));
648 	} else {
649 		dfui_form_action_add(f, "switch",
650 		    dfui_info_new(_("Switch to Expert Mode"), "", ""));
651 	}
652 
653 	return(f);
654 }
655 
656 /*
657  * Returns:
658  *	-1 = the form should be redisplayed
659  *	 0 = failure, function is over
660  *	 1 = success, function is over
661  */
662 static int
663 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
664 {
665 	struct dfui_dataset *ds;
666 	struct dfui_response *r;
667 
668 	for (;;) {
669 		if (dfui_form_dataset_get_first(f) == NULL)
670 			populate_create_subpartitions_form(f, a);
671 
672 		if (!dfui_be_present(a->c, f, &r))
673 			abort_backend();
674 
675 		if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
676 			dfui_response_free(r);
677 			return(0);
678 		} else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
679 			if (check_subpartition_selections(r, a)) {
680 				save_subpartition_selections(r, a);
681 				expert = expert ? 0 : 1;
682 				dfui_response_free(r);
683 				return(-1);
684 			}
685 		} else {
686 			if (check_subpartition_selections(r, a)) {
687 				save_subpartition_selections(r, a);
688 				if (!warn_subpartition_selections(a)) {
689 					if (!create_subpartitions(a)) {
690 						inform(a->c, _("The subpartitions you chose were "
691 							"not correctly created, and the "
692 							"primary partition may "
693 							"now be in an inconsistent state. "
694 							"We recommend re-formatting it "
695 							"before proceeding."));
696 						dfui_response_free(r);
697 						return(0);
698 					} else {
699 						dfui_response_free(r);
700 						return(1);
701 					}
702 				}
703 			}
704 		}
705 
706 		dfui_form_datasets_free(f);
707 		/* dfui_form_datasets_add_from_response(f, r); */
708 		for (ds = dfui_response_dataset_get_first(r); ds != NULL;
709 		    ds = dfui_dataset_get_next(ds)) {
710 			dfui_form_dataset_add(f, dfui_dataset_dup(ds));
711 		}
712 	}
713 }
714 
715 void
716 fn_create_subpartitions_ufs(struct i_fn_args *a)
717 {
718 	struct dfui_form *f;
719 	int done = 0;
720 
721 	a->result = 0;
722 	while (!done) {
723 		f = make_create_subpartitions_form(a);
724 		switch (show_create_subpartitions_form(f, a)) {
725 		case -1:
726 			done = 0;
727 			break;
728 		case 0:
729 			done = 1;
730 			a->result = 0;
731 			break;
732 		case 1:
733 			done = 1;
734 			a->result = 1;
735 			break;
736 		}
737 		dfui_form_free(f);
738 	}
739 }
740