1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2011 Nathan Whitehorn
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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #include <sys/param.h>
32 #include <sys/stat.h>
33 #include <errno.h>
34 #include <libutil.h>
35 #include <inttypes.h>
36 
37 #include <libgeom.h>
38 #include <dialog.h>
39 #include <dlg_keys.h>
40 
41 #include "partedit.h"
42 
43 #define GPART_FLAGS "x" /* Do not commit changes by default */
44 
45 static void
46 gpart_show_error(const char *title, const char *explanation, const char *errstr)
47 {
48 	char *errmsg;
49 	char message[512];
50 	int error;
51 
52 	if (explanation == NULL)
53 		explanation = "";
54 
55 	error = strtol(errstr, &errmsg, 0);
56 	if (errmsg != errstr) {
57 		while (errmsg[0] == ' ')
58 			errmsg++;
59 		if (errmsg[0] != '\0')
60 			sprintf(message, "%s%s. %s", explanation,
61 			    strerror(error), errmsg);
62 		else
63 			sprintf(message, "%s%s", explanation, strerror(error));
64 	} else {
65 		sprintf(message, "%s%s", explanation, errmsg);
66 	}
67 
68 	dialog_msgbox(title, message, 0, 0, TRUE);
69 }
70 
71 static int
72 scheme_supports_labels(const char *scheme)
73 {
74 	if (strcmp(scheme, "APM") == 0)
75 		return (1);
76 	if (strcmp(scheme, "GPT") == 0)
77 		return (1);
78 
79 	return (0);
80 }
81 
82 static void
83 newfs_command(const char *fstype, char *command, int use_default)
84 {
85 	if (strcmp(fstype, "freebsd-ufs") == 0) {
86 		int i;
87 		DIALOG_LISTITEM items[] = {
88 			{"UFS1", "UFS Version 1",
89 			    "Use version 1 of the UFS file system instead "
90 			    "of version 2 (not recommended)", 0 },
91 			{"SU", "Softupdates",
92 			    "Enable softupdates (default)", 1 },
93 			{"SUJ", "Softupdates journaling",
94 			    "Enable file system journaling (default - "
95 			    "turn off for SSDs)", 1 },
96 			{"TRIM", "Enable SSD TRIM support",
97 			    "Enable TRIM support, useful on solid-state drives",
98 			    0 },
99 		};
100 
101 		if (!use_default) {
102 			int choice;
103 			choice = dlg_checklist("UFS Options", "", 0, 0, 0,
104 			    nitems(items), items, NULL,
105 			    FLAG_CHECK, &i);
106 			if (choice == 1) /* Cancel */
107 				return;
108 		}
109 
110 		strcpy(command, "newfs ");
111 		for (i = 0; i < (int)nitems(items); i++) {
112 			if (items[i].state == 0)
113 				continue;
114 			if (strcmp(items[i].name, "UFS1") == 0)
115 				strcat(command, "-O1 ");
116 			else if (strcmp(items[i].name, "SU") == 0)
117 				strcat(command, "-U ");
118 			else if (strcmp(items[i].name, "SUJ") == 0)
119 				strcat(command, "-j ");
120 			else if (strcmp(items[i].name, "TRIM") == 0)
121 				strcat(command, "-t ");
122 		}
123 	} else if (strcmp(fstype, "freebsd-zfs") == 0) {
124 		int i;
125 		DIALOG_LISTITEM items[] = {
126 			{"fletcher4", "checksum algorithm: fletcher4",
127 			    "Use fletcher4 for data integrity checking. "
128 			    "(default)", 1 },
129 			{"fletcher2", "checksum algorithm: fletcher2",
130 			    "Use fletcher2 for data integrity checking. "
131 			    "(not recommended)", 0 },
132 			{"sha256", "checksum algorithm: sha256",
133 			    "Use sha256 for data integrity checking. "
134 			    "(not recommended)", 0 },
135 			{"atime", "Update atimes for files",
136 			    "Disable atime update", 0 },
137 		};
138 
139 		if (!use_default) {
140 			int choice;
141 			choice = dlg_checklist("ZFS Options", "", 0, 0, 0,
142 			    nitems(items), items, NULL,
143 			    FLAG_CHECK, &i);
144 			if (choice == 1) /* Cancel */
145 				return;
146 		}
147 
148 		strcpy(command, "zpool create -f -m none ");
149 		if (getenv("BSDINSTALL_TMPBOOT") != NULL) {
150 			char zfsboot_path[MAXPATHLEN];
151 			snprintf(zfsboot_path, sizeof(zfsboot_path), "%s/zfs",
152 			    getenv("BSDINSTALL_TMPBOOT"));
153 			mkdir(zfsboot_path, S_IRWXU | S_IRGRP | S_IXGRP |
154 			    S_IROTH | S_IXOTH);
155 			sprintf(command, "%s -o cachefile=%s/zpool.cache ",
156 			    command, zfsboot_path);
157 		}
158 		for (i = 0; i < (int)nitems(items); i++) {
159 			if (items[i].state == 0)
160 				continue;
161 			if (strcmp(items[i].name, "fletcher4") == 0)
162 				strcat(command, "-O checksum=fletcher4 ");
163 			else if (strcmp(items[i].name, "fletcher2") == 0)
164 				strcat(command, "-O checksum=fletcher2 ");
165 			else if (strcmp(items[i].name, "sha256") == 0)
166 				strcat(command, "-O checksum=sha256 ");
167 			else if (strcmp(items[i].name, "atime") == 0)
168 				strcat(command, "-O atime=off ");
169 		}
170 	} else if (strcmp(fstype, "fat32") == 0 || strcmp(fstype, "efi") == 0) {
171 		int i;
172 		DIALOG_LISTITEM items[] = {
173 			{"FAT32", "FAT Type 32",
174 			    "Create a FAT32 filesystem (default)", 1 },
175 			{"FAT16", "FAT Type 16",
176 			    "Create a FAT16 filesystem", 0 },
177 			{"FAT12", "FAT Type 12",
178 			    "Create a FAT12 filesystem", 0 },
179 		};
180 
181 		if (!use_default) {
182 			int choice;
183 			choice = dlg_checklist("FAT Options", "", 0, 0, 0,
184 			    nitems(items), items, NULL,
185 			    FLAG_RADIO, &i);
186 			if (choice == 1) /* Cancel */
187 				return;
188 		}
189 
190 		strcpy(command, "newfs_msdos ");
191 		for (i = 0; i < (int)nitems(items); i++) {
192 			if (items[i].state == 0)
193 				continue;
194 			if (strcmp(items[i].name, "FAT32") == 0)
195 				strcat(command, "-F 32 ");
196 			else if (strcmp(items[i].name, "FAT16") == 0)
197 				strcat(command, "-F 16 ");
198 			else if (strcmp(items[i].name, "FAT12") == 0)
199 				strcat(command, "-F 12 ");
200 		}
201 	} else {
202 		if (!use_default)
203 			dialog_msgbox("Error", "No configurable options exist "
204 			    "for this filesystem.", 0, 0, TRUE);
205 		command[0] = '\0';
206 	}
207 }
208 
209 const char *
210 choose_part_type(const char *def_scheme)
211 {
212 	int cancel, choice;
213 	const char *scheme = NULL;
214 
215 	DIALOG_LISTITEM items[] = {
216 		{"APM", "Apple Partition Map",
217 		    "Bootable on PowerPC Apple Hardware", 0 },
218 		{"BSD", "BSD Labels",
219 		    "Bootable on most x86 systems", 0 },
220 		{"GPT", "GUID Partition Table",
221 		    "Bootable on most x86 systems and EFI aware ARM64", 0 },
222 		{"MBR", "DOS Partitions",
223 		    "Bootable on most x86 systems", 0 },
224 		{"VTOC8", "Sun VTOC8 Partition Table",
225 		    "Bootable on Sun SPARC systems", 0 },
226 	};
227 
228 parttypemenu:
229 	dialog_vars.default_item = __DECONST(char *, def_scheme);
230 	cancel = dlg_menu("Partition Scheme",
231 	    "Select a partition scheme for this volume:", 0, 0, 0,
232 	    nitems(items), items, &choice, NULL);
233 	dialog_vars.default_item = NULL;
234 
235 	if (cancel)
236 		return NULL;
237 
238 	if (!is_scheme_bootable(items[choice].name)) {
239 		char message[512];
240 		sprintf(message, "This partition scheme (%s) is not "
241 		    "bootable on this platform. Are you sure you want "
242 		    "to proceed?", items[choice].name);
243 		dialog_vars.defaultno = TRUE;
244 		cancel = dialog_yesno("Warning", message, 0, 0);
245 		dialog_vars.defaultno = FALSE;
246 		if (cancel) /* cancel */
247 			goto parttypemenu;
248 	}
249 
250 	scheme = items[choice].name;
251 
252 	return scheme;
253 }
254 
255 int
256 gpart_partition(const char *lg_name, const char *scheme)
257 {
258 	int cancel;
259 	struct gctl_req *r;
260 	const char *errstr;
261 
262 schememenu:
263 	if (scheme == NULL) {
264 		scheme = choose_part_type(default_scheme());
265 
266 		if (scheme == NULL)
267 			return (-1);
268 
269 		if (!is_scheme_bootable(scheme)) {
270 			char message[512];
271 			sprintf(message, "This partition scheme (%s) is not "
272 			    "bootable on this platform. Are you sure you want "
273 			    "to proceed?", scheme);
274 			dialog_vars.defaultno = TRUE;
275 			cancel = dialog_yesno("Warning", message, 0, 0);
276 			dialog_vars.defaultno = FALSE;
277 			if (cancel) { /* cancel */
278 				/* Reset scheme so user can choose another */
279 				scheme = NULL;
280 				goto schememenu;
281 			}
282 		}
283 	}
284 
285 	r = gctl_get_handle();
286 	gctl_ro_param(r, "class", -1, "PART");
287 	gctl_ro_param(r, "arg0", -1, lg_name);
288 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
289 	gctl_ro_param(r, "scheme", -1, scheme);
290 	gctl_ro_param(r, "verb", -1, "create");
291 
292 	errstr = gctl_issue(r);
293 	if (errstr != NULL && errstr[0] != '\0') {
294 		gpart_show_error("Error", NULL, errstr);
295 		gctl_free(r);
296 		scheme = NULL;
297 		goto schememenu;
298 	}
299 	gctl_free(r);
300 
301 	if (bootcode_path(scheme) != NULL)
302 		get_part_metadata(lg_name, 1)->bootcode = 1;
303 	return (0);
304 }
305 
306 static void
307 gpart_activate(struct gprovider *pp)
308 {
309 	struct gconfig *gc;
310 	struct gctl_req *r;
311 	const char *errstr, *scheme;
312 	const char *attribute = NULL;
313 	intmax_t idx;
314 
315 	/*
316 	 * Some partition schemes need this partition to be marked 'active'
317 	 * for it to be bootable.
318 	 */
319 	LIST_FOREACH(gc, &pp->lg_geom->lg_config, lg_config) {
320 		if (strcmp(gc->lg_name, "scheme") == 0) {
321 			scheme = gc->lg_val;
322 			break;
323 		}
324 	}
325 
326 	if (strcmp(scheme, "MBR") == 0 || strcmp(scheme, "EBR") == 0)
327 		attribute = "active";
328 	else
329 		return;
330 
331 	LIST_FOREACH(gc, &pp->lg_config, lg_config) {
332 		if (strcmp(gc->lg_name, "index") == 0) {
333 			idx = atoi(gc->lg_val);
334 			break;
335 		}
336 	}
337 
338 	r = gctl_get_handle();
339 	gctl_ro_param(r, "class", -1, "PART");
340 	gctl_ro_param(r, "arg0", -1, pp->lg_geom->lg_name);
341 	gctl_ro_param(r, "verb", -1, "set");
342 	gctl_ro_param(r, "attrib", -1, attribute);
343 	gctl_ro_param(r, "index", sizeof(idx), &idx);
344 
345 	errstr = gctl_issue(r);
346 	if (errstr != NULL && errstr[0] != '\0')
347 		gpart_show_error("Error", "Error marking partition active:",
348 		    errstr);
349 	gctl_free(r);
350 }
351 
352 void
353 gpart_set_root(const char *lg_name, const char *attribute)
354 {
355 	struct gctl_req *r;
356 	const char *errstr;
357 
358 	r = gctl_get_handle();
359 	gctl_ro_param(r, "class", -1, "PART");
360 	gctl_ro_param(r, "arg0", -1, lg_name);
361 	gctl_ro_param(r, "flags", -1, "C");
362 	gctl_ro_param(r, "verb", -1, "set");
363 	gctl_ro_param(r, "attrib", -1, attribute);
364 
365 	errstr = gctl_issue(r);
366 	if (errstr != NULL && errstr[0] != '\0')
367 		gpart_show_error("Error", "Error setting parameter on disk:",
368 		    errstr);
369 	gctl_free(r);
370 }
371 
372 static void
373 gpart_bootcode(struct ggeom *gp)
374 {
375 	const char *bootcode;
376 	struct gconfig *gc;
377 	struct gctl_req *r;
378 	const char *errstr, *scheme;
379 	uint8_t *boot;
380 	size_t bootsize, bytes;
381 	int bootfd;
382 
383 	/*
384 	 * Write default bootcode to the newly partitioned disk, if that
385 	 * applies on this platform.
386 	 */
387 	LIST_FOREACH(gc, &gp->lg_config, lg_config) {
388 		if (strcmp(gc->lg_name, "scheme") == 0) {
389 			scheme = gc->lg_val;
390 			break;
391 		}
392 	}
393 
394 	bootcode = bootcode_path(scheme);
395 	if (bootcode == NULL)
396 		return;
397 
398 	bootfd = open(bootcode, O_RDONLY);
399 	if (bootfd < 0) {
400 		dialog_msgbox("Bootcode Error", strerror(errno), 0, 0,
401 		    TRUE);
402 		return;
403 	}
404 
405 	bootsize = lseek(bootfd, 0, SEEK_END);
406 	boot = malloc(bootsize);
407 	lseek(bootfd, 0, SEEK_SET);
408 	bytes = 0;
409 	while (bytes < bootsize)
410 		bytes += read(bootfd, boot + bytes, bootsize - bytes);
411 	close(bootfd);
412 
413 	r = gctl_get_handle();
414 	gctl_ro_param(r, "class", -1, "PART");
415 	gctl_ro_param(r, "arg0", -1, gp->lg_name);
416 	gctl_ro_param(r, "verb", -1, "bootcode");
417 	gctl_ro_param(r, "bootcode", bootsize, boot);
418 
419 	errstr = gctl_issue(r);
420 	if (errstr != NULL && errstr[0] != '\0')
421 		gpart_show_error("Bootcode Error", NULL, errstr);
422 	gctl_free(r);
423 	free(boot);
424 }
425 
426 static void
427 gpart_partcode(struct gprovider *pp, const char *fstype)
428 {
429 	struct gconfig *gc;
430 	const char *scheme;
431 	const char *indexstr;
432 	char message[255], command[255];
433 
434 	LIST_FOREACH(gc, &pp->lg_geom->lg_config, lg_config) {
435 		if (strcmp(gc->lg_name, "scheme") == 0) {
436 			scheme = gc->lg_val;
437 			break;
438 		}
439 	}
440 
441 	/* Make sure this partition scheme needs partcode on this platform */
442 	if (partcode_path(scheme, fstype) == NULL)
443 		return;
444 
445 	LIST_FOREACH(gc, &pp->lg_config, lg_config) {
446 		if (strcmp(gc->lg_name, "index") == 0) {
447 			indexstr = gc->lg_val;
448 			break;
449 		}
450 	}
451 
452 	/* Shell out to gpart for partcode for now */
453 	sprintf(command, "gpart bootcode -p %s -i %s %s",
454 	    partcode_path(scheme, fstype), indexstr, pp->lg_geom->lg_name);
455 	if (system(command) != 0) {
456 		sprintf(message, "Error installing partcode on partition %s",
457 		    pp->lg_name);
458 		dialog_msgbox("Error", message, 0, 0, TRUE);
459 	}
460 }
461 
462 void
463 gpart_destroy(struct ggeom *lg_geom)
464 {
465 	struct gctl_req *r;
466 	struct gprovider *pp;
467 	const char *errstr;
468 	int force = 1;
469 
470 	/* Delete all child metadata */
471 	LIST_FOREACH(pp, &lg_geom->lg_provider, lg_provider)
472 		gpart_delete(pp);
473 
474 	/* Revert any local changes to get this geom into a pristine state */
475 	r = gctl_get_handle();
476 	gctl_ro_param(r, "class", -1, "PART");
477 	gctl_ro_param(r, "arg0", -1, lg_geom->lg_name);
478 	gctl_ro_param(r, "verb", -1, "undo");
479 	gctl_issue(r); /* Ignore errors -- these are non-fatal */
480 	gctl_free(r);
481 
482 	/* Now destroy the geom itself */
483 	r = gctl_get_handle();
484 	gctl_ro_param(r, "class", -1, "PART");
485 	gctl_ro_param(r, "arg0", -1, lg_geom->lg_name);
486 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
487 	gctl_ro_param(r, "force", sizeof(force), &force);
488 	gctl_ro_param(r, "verb", -1, "destroy");
489 	errstr = gctl_issue(r);
490 	if (errstr != NULL && errstr[0] != '\0') {
491 		/*
492 		 * Check if we reverted away the existence of the geom
493 		 * altogether. Show all other errors to the user.
494 		 */
495 		if (strtol(errstr, NULL, 0) != EINVAL)
496 			gpart_show_error("Error", NULL, errstr);
497 	}
498 	gctl_free(r);
499 
500 	/* And any metadata associated with the partition scheme itself */
501 	delete_part_metadata(lg_geom->lg_name);
502 }
503 
504 void
505 gpart_edit(struct gprovider *pp)
506 {
507 	struct gctl_req *r;
508 	struct gconfig *gc;
509 	struct gconsumer *cp;
510 	struct ggeom *geom;
511 	const char *errstr, *oldtype, *scheme;
512 	struct partition_metadata *md;
513 	char sizestr[32];
514 	char newfs[255];
515 	intmax_t idx;
516 	int hadlabel, choice, junk, nitems;
517 	unsigned i;
518 
519 	DIALOG_FORMITEM items[] = {
520 		{0, "Type:", 5, 0, 0, FALSE, "", 11, 0, 12, 15, 0,
521 		    FALSE, "Filesystem type (e.g. freebsd-ufs, freebsd-zfs, "
522 		    "freebsd-swap)", FALSE},
523 		{0, "Size:", 5, 1, 0, FALSE, "", 11, 1, 12, 0, 0,
524 		    FALSE, "Partition size. Append K, M, G for kilobytes, "
525 		    "megabytes or gigabytes.", FALSE},
526 		{0, "Mountpoint:", 11, 2, 0, FALSE, "", 11, 2, 12, 15, 0,
527 		    FALSE, "Path at which to mount this partition (leave blank "
528 		    "for swap, set to / for root filesystem)", FALSE},
529 		{0, "Label:", 7, 3, 0, FALSE, "", 11, 3, 12, 15, 0, FALSE,
530 		    "Partition name. Not all partition schemes support this.",
531 		    FALSE},
532 	};
533 
534 	/*
535 	 * Find the PART geom we are manipulating. This may be a consumer of
536 	 * this provider, or its parent. Check the consumer case first.
537 	 */
538 	geom = NULL;
539 	LIST_FOREACH(cp, &pp->lg_consumers, lg_consumers)
540 		if (strcmp(cp->lg_geom->lg_class->lg_name, "PART") == 0) {
541 			/* Check for zombie geoms, treating them as blank */
542 			scheme = NULL;
543 			LIST_FOREACH(gc, &cp->lg_geom->lg_config, lg_config) {
544 				if (strcmp(gc->lg_name, "scheme") == 0) {
545 					scheme = gc->lg_val;
546 					break;
547 				}
548 			}
549 			if (scheme == NULL || strcmp(scheme, "(none)") == 0) {
550 				gpart_partition(cp->lg_geom->lg_name, NULL);
551 				return;
552 			}
553 
554 			/* If this is a nested partition, edit as usual */
555 			if (strcmp(pp->lg_geom->lg_class->lg_name, "PART") == 0)
556 				break;
557 
558 			/* Destroy the geom and all sub-partitions */
559 			gpart_destroy(cp->lg_geom);
560 
561 			/* Now re-partition and return */
562 			gpart_partition(cp->lg_geom->lg_name, NULL);
563 			return;
564 		}
565 
566 	if (geom == NULL && strcmp(pp->lg_geom->lg_class->lg_name, "PART") == 0)
567 		geom = pp->lg_geom;
568 
569 	if (geom == NULL) {
570 		/* Disk not partitioned, so partition it */
571 		gpart_partition(pp->lg_name, NULL);
572 		return;
573 	}
574 
575 	LIST_FOREACH(gc, &geom->lg_config, lg_config) {
576 		if (strcmp(gc->lg_name, "scheme") == 0) {
577 			scheme = gc->lg_val;
578 			break;
579 		}
580 	}
581 
582 	nitems = scheme_supports_labels(scheme) ? 4 : 3;
583 
584 	/* Edit editable parameters of a partition */
585 	hadlabel = 0;
586 	LIST_FOREACH(gc, &pp->lg_config, lg_config) {
587 		if (strcmp(gc->lg_name, "type") == 0) {
588 			oldtype = gc->lg_val;
589 			items[0].text = gc->lg_val;
590 		}
591 		if (strcmp(gc->lg_name, "label") == 0 && gc->lg_val != NULL) {
592 			hadlabel = 1;
593 			items[3].text = gc->lg_val;
594 		}
595 		if (strcmp(gc->lg_name, "index") == 0)
596 			idx = atoi(gc->lg_val);
597 	}
598 
599 	TAILQ_FOREACH(md, &part_metadata, metadata) {
600 		if (md->name != NULL && strcmp(md->name, pp->lg_name) == 0) {
601 			if (md->fstab != NULL)
602 				items[2].text = md->fstab->fs_file;
603 			break;
604 		}
605 	}
606 
607 	humanize_number(sizestr, 7, pp->lg_mediasize, "B", HN_AUTOSCALE,
608 	    HN_NOSPACE | HN_DECIMAL);
609 	items[1].text = sizestr;
610 
611 editpart:
612 	choice = dlg_form("Edit Partition", "", 0, 0, 0, nitems, items, &junk);
613 
614 	if (choice) /* Cancel pressed */
615 		goto endedit;
616 
617 	/* If this is the root partition, check that this fs is bootable */
618 	if (strcmp(items[2].text, "/") == 0 && !is_fs_bootable(scheme,
619 	    items[0].text)) {
620 		char message[512];
621 		sprintf(message, "This file system (%s) is not bootable "
622 		    "on this system. Are you sure you want to proceed?",
623 		    items[0].text);
624 		dialog_vars.defaultno = TRUE;
625 		choice = dialog_yesno("Warning", message, 0, 0);
626 		dialog_vars.defaultno = FALSE;
627 		if (choice == 1) /* cancel */
628 			goto editpart;
629 	}
630 
631 	/* Check if the label has a / in it */
632 	if (strchr(items[3].text, '/') != NULL) {
633 		dialog_msgbox("Error", "Label contains a /, which is not an "
634 		    "allowed character.", 0, 0, TRUE);
635 		goto editpart;
636 	}
637 
638 	r = gctl_get_handle();
639 	gctl_ro_param(r, "class", -1, "PART");
640 	gctl_ro_param(r, "arg0", -1, geom->lg_name);
641 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
642 	gctl_ro_param(r, "verb", -1, "modify");
643 	gctl_ro_param(r, "index", sizeof(idx), &idx);
644 	if (hadlabel || items[3].text[0] != '\0')
645 		gctl_ro_param(r, "label", -1, items[3].text);
646 	gctl_ro_param(r, "type", -1, items[0].text);
647 	errstr = gctl_issue(r);
648 	if (errstr != NULL && errstr[0] != '\0') {
649 		gpart_show_error("Error", NULL, errstr);
650 		gctl_free(r);
651 		goto editpart;
652 	}
653 	gctl_free(r);
654 
655 	newfs_command(items[0].text, newfs, 1);
656 	set_default_part_metadata(pp->lg_name, scheme, items[0].text,
657 	    items[2].text, (strcmp(oldtype, items[0].text) != 0) ?
658 	    newfs : NULL);
659 
660 endedit:
661 	if (strcmp(oldtype, items[0].text) != 0 && cp != NULL)
662 		gpart_destroy(cp->lg_geom);
663 	if (strcmp(oldtype, items[0].text) != 0 && strcmp(items[0].text,
664 	    "freebsd") == 0)
665 		gpart_partition(pp->lg_name, "BSD");
666 
667 	for (i = 0; i < nitems(items); i++)
668 		if (items[i].text_free)
669 			free(items[i].text);
670 }
671 
672 void
673 set_default_part_metadata(const char *name, const char *scheme,
674     const char *type, const char *mountpoint, const char *newfs)
675 {
676 	struct partition_metadata *md;
677 	char *zpool_name = NULL;
678 	int i;
679 
680 	/* Set part metadata */
681 	md = get_part_metadata(name, 1);
682 
683 	if (newfs) {
684 		if (md->newfs != NULL) {
685 			free(md->newfs);
686 			md->newfs = NULL;
687 		}
688 
689 		if (newfs != NULL && newfs[0] != '\0') {
690 			md->newfs = malloc(strlen(newfs) + strlen(" /dev/") +
691 			    strlen(mountpoint) + 5 + strlen(name) + 1);
692 			if (strcmp("freebsd-zfs", type) == 0) {
693 				zpool_name = strdup((strlen(mountpoint) == 1) ?
694 				    "root" : &mountpoint[1]);
695 				for (i = 0; zpool_name[i] != 0; i++)
696 					if (!isalnum(zpool_name[i]))
697 						zpool_name[i] = '_';
698 				sprintf(md->newfs, "%s %s /dev/%s", newfs,
699 				    zpool_name, name);
700 			} else {
701 				sprintf(md->newfs, "%s /dev/%s", newfs, name);
702 			}
703 		}
704 	}
705 
706 	if (strcmp(type, "freebsd-swap") == 0)
707 		mountpoint = "none";
708 	if (strcmp(type, bootpart_type(scheme)) == 0)
709 		md->bootcode = 1;
710 
711 	/* VTOC8 needs partcode at the start of partitions */
712 	if (strcmp(scheme, "VTOC8") == 0 && (strcmp(type, "freebsd-ufs") == 0
713 	    || strcmp(type, "freebsd-zfs") == 0))
714 		md->bootcode = 1;
715 
716 	if (mountpoint == NULL || mountpoint[0] == '\0') {
717 		if (md->fstab != NULL) {
718 			free(md->fstab->fs_spec);
719 			free(md->fstab->fs_file);
720 			free(md->fstab->fs_vfstype);
721 			free(md->fstab->fs_mntops);
722 			free(md->fstab->fs_type);
723 			free(md->fstab);
724 			md->fstab = NULL;
725 		}
726 	} else {
727 		if (md->fstab == NULL) {
728 			md->fstab = malloc(sizeof(struct fstab));
729 		} else {
730 			free(md->fstab->fs_spec);
731 			free(md->fstab->fs_file);
732 			free(md->fstab->fs_vfstype);
733 			free(md->fstab->fs_mntops);
734 			free(md->fstab->fs_type);
735 		}
736 		if (strcmp("freebsd-zfs", type) == 0) {
737 			md->fstab->fs_spec = strdup(zpool_name);
738 		} else {
739 			md->fstab->fs_spec = malloc(strlen(name) +
740 			    strlen("/dev/") + 1);
741 			sprintf(md->fstab->fs_spec, "/dev/%s", name);
742 		}
743 		md->fstab->fs_file = strdup(mountpoint);
744 		/* Get VFS from text after freebsd-, if possible */
745 		if (strncmp("freebsd-", type, 8) == 0)
746 			md->fstab->fs_vfstype = strdup(&type[8]);
747 		else if (strcmp("fat32", type) == 0 || strcmp("efi", type) == 0)
748 			md->fstab->fs_vfstype = strdup("msdosfs");
749 		else
750 			md->fstab->fs_vfstype = strdup(type); /* Guess */
751 		if (strcmp(type, "freebsd-swap") == 0) {
752 			md->fstab->fs_type = strdup(FSTAB_SW);
753 			md->fstab->fs_freq = 0;
754 			md->fstab->fs_passno = 0;
755 		} else if (strcmp(type, "freebsd-zfs") == 0) {
756 			md->fstab->fs_type = strdup(FSTAB_RW);
757 			md->fstab->fs_freq = 0;
758 			md->fstab->fs_passno = 0;
759 		} else {
760 			md->fstab->fs_type = strdup(FSTAB_RW);
761 			if (strcmp(mountpoint, "/") == 0) {
762 				md->fstab->fs_freq = 1;
763 				md->fstab->fs_passno = 1;
764 			} else {
765 				md->fstab->fs_freq = 2;
766 				md->fstab->fs_passno = 2;
767 			}
768 		}
769 		md->fstab->fs_mntops = strdup(md->fstab->fs_type);
770 	}
771 
772 	if (zpool_name != NULL)
773 		free(zpool_name);
774 }
775 
776 static
777 int part_compare(const void *xa, const void *xb)
778 {
779 	struct gprovider **a = (struct gprovider **)xa;
780 	struct gprovider **b = (struct gprovider **)xb;
781 	intmax_t astart, bstart;
782 	struct gconfig *gc;
783 
784 	astart = bstart = 0;
785 	LIST_FOREACH(gc, &(*a)->lg_config, lg_config)
786 		if (strcmp(gc->lg_name, "start") == 0) {
787 			astart = strtoimax(gc->lg_val, NULL, 0);
788 			break;
789 		}
790 	LIST_FOREACH(gc, &(*b)->lg_config, lg_config)
791 		if (strcmp(gc->lg_name, "start") == 0) {
792 			bstart = strtoimax(gc->lg_val, NULL, 0);
793 			break;
794 		}
795 
796 	if (astart < bstart)
797 		return -1;
798 	else if (astart > bstart)
799 		return 1;
800 	else
801 		return 0;
802 }
803 
804 intmax_t
805 gpart_max_free(struct ggeom *geom, intmax_t *npartstart)
806 {
807 	struct gconfig *gc;
808 	struct gprovider *pp, **providers;
809 	intmax_t sectorsize, stripesize, offset;
810 	intmax_t lastend;
811 	intmax_t start, end;
812 	intmax_t maxsize, maxstart;
813 	intmax_t partstart, partend;
814 	int i, nparts;
815 
816 	/* Now get the maximum free size and free start */
817 	start = end = 0;
818 	LIST_FOREACH(gc, &geom->lg_config, lg_config) {
819 		if (strcmp(gc->lg_name, "first") == 0)
820 			start = strtoimax(gc->lg_val, NULL, 0);
821 		if (strcmp(gc->lg_name, "last") == 0)
822 			end = strtoimax(gc->lg_val, NULL, 0);
823 	}
824 
825 	i = nparts = 0;
826 	LIST_FOREACH(pp, &geom->lg_provider, lg_provider)
827 		nparts++;
828 	providers = calloc(nparts, sizeof(providers[0]));
829 	LIST_FOREACH(pp, &geom->lg_provider, lg_provider)
830 		providers[i++] = pp;
831 	qsort(providers, nparts, sizeof(providers[0]), part_compare);
832 
833 	lastend = start - 1;
834 	maxsize = 0;
835 	for (i = 0; i < nparts; i++) {
836 		pp = providers[i];
837 
838 		LIST_FOREACH(gc, &pp->lg_config, lg_config) {
839 			if (strcmp(gc->lg_name, "start") == 0)
840 				partstart = strtoimax(gc->lg_val, NULL, 0);
841 			if (strcmp(gc->lg_name, "end") == 0)
842 				partend = strtoimax(gc->lg_val, NULL, 0);
843 		}
844 
845 		if (partstart - lastend > maxsize) {
846 			maxsize = partstart - lastend - 1;
847 			maxstart = lastend + 1;
848 		}
849 
850 		lastend = partend;
851 	}
852 
853 	if (end - lastend > maxsize) {
854 		maxsize = end - lastend - 1;
855 		maxstart = lastend + 1;
856 	}
857 
858 	pp = LIST_FIRST(&geom->lg_consumer)->lg_provider;
859 
860 	/*
861 	 * Round the start and size of the largest available space up to
862 	 * the nearest multiple of the adjusted stripe size.
863 	 *
864 	 * The adjusted stripe size is the least common multiple of the
865 	 * actual stripe size, or the sector size if no stripe size was
866 	 * reported, and 4096.  The reason for this is that contemporary
867 	 * disks often have 4096-byte physical sectors but report 512
868 	 * bytes instead for compatibility with older / broken operating
869 	 * systems and BIOSes.  For the same reasons, virtualized storage
870 	 * may also report a 512-byte stripe size, or none at all.
871 	 */
872 	sectorsize = pp->lg_sectorsize;
873 	if ((stripesize = pp->lg_stripesize) == 0)
874 		stripesize = sectorsize;
875 	while (stripesize % 4096 != 0)
876 		stripesize *= 2;
877 	if ((offset = maxstart * sectorsize % stripesize) != 0) {
878 		offset = (stripesize - offset) / sectorsize;
879 		maxstart += offset;
880 		maxsize -= offset;
881 	}
882 
883 	if (npartstart != NULL)
884 		*npartstart = maxstart;
885 
886 	return (maxsize);
887 }
888 
889 void
890 gpart_create(struct gprovider *pp, char *default_type, char *default_size,
891      char *default_mountpoint, char **partname, int interactive)
892 {
893 	struct gctl_req *r;
894 	struct gconfig *gc;
895 	struct gconsumer *cp;
896 	struct ggeom *geom;
897 	const char *errstr, *scheme;
898 	char sizestr[32], startstr[32], output[64], *newpartname;
899 	char newfs[255], options_fstype[64];
900 	intmax_t maxsize, size, sector, firstfree, stripe;
901 	uint64_t bytes;
902 	int nitems, choice, junk;
903 	unsigned i;
904 
905 	DIALOG_FORMITEM items[] = {
906 		{0, "Type:", 5, 0, 0, FALSE, "freebsd-ufs", 11, 0, 12, 15, 0,
907 		    FALSE, "Filesystem type (e.g. freebsd-ufs, freebsd-zfs, "
908 		    "freebsd-swap)", FALSE},
909 		{0, "Size:", 5, 1, 0, FALSE, "", 11, 1, 12, 15, 0,
910 		    FALSE, "Partition size. Append K, M, G for kilobytes, "
911 		    "megabytes or gigabytes.", FALSE},
912 		{0, "Mountpoint:", 11, 2, 0, FALSE, "", 11, 2, 12, 15, 0,
913 		    FALSE, "Path at which to mount partition (blank for "
914 		    "swap, / for root filesystem)", FALSE},
915 		{0, "Label:", 7, 3, 0, FALSE, "", 11, 3, 12, 15, 0, FALSE,
916 		    "Partition name. Not all partition schemes support this.",
917 		    FALSE},
918 	};
919 
920 	if (partname != NULL)
921 		*partname = NULL;
922 
923 	/* Record sector and stripe sizes */
924 	sector = pp->lg_sectorsize;
925 	stripe = pp->lg_stripesize;
926 
927 	/*
928 	 * Find the PART geom we are manipulating. This may be a consumer of
929 	 * this provider, or its parent. Check the consumer case first.
930 	 */
931 	geom = NULL;
932 	LIST_FOREACH(cp, &pp->lg_consumers, lg_consumers)
933 		if (strcmp(cp->lg_geom->lg_class->lg_name, "PART") == 0) {
934 			geom = cp->lg_geom;
935 			break;
936 		}
937 
938 	if (geom == NULL && strcmp(pp->lg_geom->lg_class->lg_name, "PART") == 0)
939 		geom = pp->lg_geom;
940 
941 	/* Now get the partition scheme */
942 	scheme = NULL;
943 	if (geom != NULL) {
944 		LIST_FOREACH(gc, &geom->lg_config, lg_config)
945 			if (strcmp(gc->lg_name, "scheme") == 0)
946 				scheme = gc->lg_val;
947 	}
948 
949 	if (geom == NULL || scheme == NULL || strcmp(scheme, "(none)") == 0) {
950 		if (gpart_partition(pp->lg_name, NULL) == 0)
951 			dialog_msgbox("",
952 			    "The partition table has been successfully created."
953 			    " Please press Create again to create partitions.",
954 			    0, 0, TRUE);
955 
956 		return;
957 	}
958 
959 	/*
960 	 * If we still don't have a geom, either the user has
961 	 * canceled partitioning or there has been an error which has already
962 	 * been displayed, so bail.
963 	 */
964 	if (geom == NULL)
965 		return;
966 
967 	maxsize = size = gpart_max_free(geom, &firstfree);
968 	if (size <= 0) {
969 		dialog_msgbox("Error", "No free space left on device.", 0, 0,
970 		    TRUE);
971 		return;
972 	}
973 
974 	humanize_number(sizestr, 7, size*sector, "B", HN_AUTOSCALE,
975 	    HN_NOSPACE | HN_DECIMAL);
976 	items[1].text = sizestr;
977 
978 	/* Special-case the MBR default type for nested partitions */
979 	if (strcmp(scheme, "MBR") == 0) {
980 		items[0].text = "freebsd";
981 		items[0].help = "Filesystem type (e.g. freebsd, fat32)";
982 	}
983 
984 	nitems = scheme_supports_labels(scheme) ? 4 : 3;
985 
986 	if (default_type != NULL)
987 		items[0].text = default_type;
988 	if (default_size != NULL)
989 		items[1].text = default_size;
990 	if (default_mountpoint != NULL)
991 		items[2].text = default_mountpoint;
992 
993 	/* Default options */
994 	strncpy(options_fstype, items[0].text,
995 	    sizeof(options_fstype));
996 	newfs_command(options_fstype, newfs, 1);
997 addpartform:
998 	if (interactive) {
999 		dialog_vars.extra_label = "Options";
1000 		dialog_vars.extra_button = TRUE;
1001 		choice = dlg_form("Add Partition", "", 0, 0, 0, nitems,
1002 		    items, &junk);
1003 		dialog_vars.extra_button = FALSE;
1004 		switch (choice) {
1005 		case 0: /* OK */
1006 			break;
1007 		case 1: /* Cancel */
1008 			return;
1009 		case 3: /* Options */
1010 			strncpy(options_fstype, items[0].text,
1011 			    sizeof(options_fstype));
1012 			newfs_command(options_fstype, newfs, 0);
1013 			goto addpartform;
1014 		}
1015 	}
1016 
1017 	/*
1018 	 * If the user changed the fs type after specifying options, undo
1019 	 * their choices in favor of the new filesystem's defaults.
1020 	 */
1021 	if (strcmp(options_fstype, items[0].text) != 0) {
1022 		strncpy(options_fstype, items[0].text, sizeof(options_fstype));
1023 		newfs_command(options_fstype, newfs, 1);
1024 	}
1025 
1026 	size = maxsize;
1027 	if (strlen(items[1].text) > 0) {
1028 		if (expand_number(items[1].text, &bytes) != 0) {
1029 			char error[512];
1030 
1031 			sprintf(error, "Invalid size: %s\n", strerror(errno));
1032 			dialog_msgbox("Error", error, 0, 0, TRUE);
1033 			goto addpartform;
1034 		}
1035 		size = MIN((intmax_t)(bytes/sector), maxsize);
1036 	}
1037 
1038 	/* Check if the label has a / in it */
1039 	if (strchr(items[3].text, '/') != NULL) {
1040 		dialog_msgbox("Error", "Label contains a /, which is not an "
1041 		    "allowed character.", 0, 0, TRUE);
1042 		goto addpartform;
1043 	}
1044 
1045 	/* Warn if no mountpoint set */
1046 	if (strcmp(items[0].text, "freebsd-ufs") == 0 &&
1047 	    items[2].text[0] != '/') {
1048 		choice = 0;
1049 		if (interactive) {
1050 			dialog_vars.defaultno = TRUE;
1051 			choice = dialog_yesno("Warning",
1052 			    "This partition does not have a valid mountpoint "
1053 			    "(for the partition from which you intend to boot the "
1054 			    "operating system, the mountpoint should be /). Are you "
1055 			    "sure you want to continue?"
1056 			, 0, 0);
1057 			dialog_vars.defaultno = FALSE;
1058 		}
1059 		if (choice == 1) /* cancel */
1060 			goto addpartform;
1061 	}
1062 
1063 	/*
1064 	 * Error if this scheme needs nested partitions, this is one, and
1065 	 * a mountpoint was set.
1066 	 */
1067 	if (strcmp(items[0].text, "freebsd") == 0 &&
1068 	    strlen(items[2].text) > 0) {
1069 		dialog_msgbox("Error", "Partitions of type \"freebsd\" are "
1070 		    "nested BSD-type partition schemes and cannot have "
1071 		    "mountpoints. After creating one, select it and press "
1072 		    "Create again to add the actual file systems.", 0, 0, TRUE);
1073 		goto addpartform;
1074 	}
1075 
1076 	/* If this is the root partition, check that this scheme is bootable */
1077 	if (strcmp(items[2].text, "/") == 0 && !is_scheme_bootable(scheme)) {
1078 		char message[512];
1079 		sprintf(message, "This partition scheme (%s) is not bootable "
1080 		    "on this platform. Are you sure you want to proceed?",
1081 		    scheme);
1082 		dialog_vars.defaultno = TRUE;
1083 		choice = dialog_yesno("Warning", message, 0, 0);
1084 		dialog_vars.defaultno = FALSE;
1085 		if (choice == 1) /* cancel */
1086 			goto addpartform;
1087 	}
1088 
1089 	/* If this is the root partition, check that this fs is bootable */
1090 	if (strcmp(items[2].text, "/") == 0 && !is_fs_bootable(scheme,
1091 	    items[0].text)) {
1092 		char message[512];
1093 		sprintf(message, "This file system (%s) is not bootable "
1094 		    "on this system. Are you sure you want to proceed?",
1095 		    items[0].text);
1096 		dialog_vars.defaultno = TRUE;
1097 		choice = dialog_yesno("Warning", message, 0, 0);
1098 		dialog_vars.defaultno = FALSE;
1099 		if (choice == 1) /* cancel */
1100 			goto addpartform;
1101 	}
1102 
1103 	/*
1104 	 * If this is the root partition, and we need a boot partition, ask
1105 	 * the user to add one.
1106 	 */
1107 
1108 	/* Check for existing freebsd-boot partition */
1109 	LIST_FOREACH(pp, &geom->lg_provider, lg_provider) {
1110 		struct partition_metadata *md;
1111 		md = get_part_metadata(pp->lg_name, 0);
1112 		if (md == NULL || !md->bootcode)
1113 			continue;
1114 		LIST_FOREACH(gc, &pp->lg_config, lg_config)
1115 			if (strcmp(gc->lg_name, "type") == 0)
1116 				break;
1117 		if (gc != NULL && strcmp(gc->lg_val,
1118 		    bootpart_type(scheme)) == 0)
1119 			break;
1120 	}
1121 
1122 	/* If there isn't one, and we need one, ask */
1123 	if ((strcmp(items[0].text, "freebsd") == 0 ||
1124 	    strcmp(items[2].text, "/") == 0) && bootpart_size(scheme) > 0 &&
1125 	    pp == NULL) {
1126 		if (interactive)
1127 			choice = dialog_yesno("Boot Partition",
1128 			    "This partition scheme requires a boot partition "
1129 			    "for the disk to be bootable. Would you like to "
1130 			    "make one now?", 0, 0);
1131 		else
1132 			choice = 0;
1133 
1134 		if (choice == 0) { /* yes */
1135 			r = gctl_get_handle();
1136 			gctl_ro_param(r, "class", -1, "PART");
1137 			gctl_ro_param(r, "arg0", -1, geom->lg_name);
1138 			gctl_ro_param(r, "flags", -1, GPART_FLAGS);
1139 			gctl_ro_param(r, "verb", -1, "add");
1140 			gctl_ro_param(r, "type", -1, bootpart_type(scheme));
1141 			snprintf(sizestr, sizeof(sizestr), "%jd",
1142 			    bootpart_size(scheme) / sector);
1143 			gctl_ro_param(r, "size", -1, sizestr);
1144 			snprintf(startstr, sizeof(startstr), "%jd", firstfree);
1145 			gctl_ro_param(r, "start", -1, startstr);
1146 			gctl_rw_param(r, "output", sizeof(output), output);
1147 			errstr = gctl_issue(r);
1148 			if (errstr != NULL && errstr[0] != '\0')
1149 				gpart_show_error("Error", NULL, errstr);
1150 			gctl_free(r);
1151 
1152 			get_part_metadata(strtok(output, " "), 1)->bootcode = 1;
1153 
1154 			/* Now adjust the part we are really adding forward */
1155 			firstfree += bootpart_size(scheme) / sector;
1156 			size -= (bootpart_size(scheme) + stripe)/sector;
1157 			if (stripe > 0 && (firstfree*sector % stripe) != 0)
1158 				firstfree += (stripe - ((firstfree*sector) %
1159 				    stripe)) / sector;
1160 		}
1161 	}
1162 
1163 	r = gctl_get_handle();
1164 	gctl_ro_param(r, "class", -1, "PART");
1165 	gctl_ro_param(r, "arg0", -1, geom->lg_name);
1166 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
1167 	gctl_ro_param(r, "verb", -1, "add");
1168 
1169 	gctl_ro_param(r, "type", -1, items[0].text);
1170 	snprintf(sizestr, sizeof(sizestr), "%jd", size);
1171 	gctl_ro_param(r, "size", -1, sizestr);
1172 	snprintf(startstr, sizeof(startstr), "%jd", firstfree);
1173 	gctl_ro_param(r, "start", -1, startstr);
1174 	if (items[3].text[0] != '\0')
1175 		gctl_ro_param(r, "label", -1, items[3].text);
1176 	gctl_rw_param(r, "output", sizeof(output), output);
1177 	errstr = gctl_issue(r);
1178 	if (errstr != NULL && errstr[0] != '\0') {
1179 		gpart_show_error("Error", NULL, errstr);
1180 		gctl_free(r);
1181 		goto addpartform;
1182 	}
1183 	newpartname = strtok(output, " ");
1184 	gctl_free(r);
1185 
1186 	/*
1187 	 * Try to destroy any geom that gpart picked up already here from
1188 	 * dirty blocks.
1189 	 */
1190 	r = gctl_get_handle();
1191 	gctl_ro_param(r, "class", -1, "PART");
1192 	gctl_ro_param(r, "arg0", -1, newpartname);
1193 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
1194 	junk = 1;
1195 	gctl_ro_param(r, "force", sizeof(junk), &junk);
1196 	gctl_ro_param(r, "verb", -1, "destroy");
1197 	gctl_issue(r); /* Error usually expected and non-fatal */
1198 	gctl_free(r);
1199 
1200 	if (strcmp(items[0].text, bootpart_type(scheme)) == 0)
1201 		get_part_metadata(newpartname, 1)->bootcode = 1;
1202 	else if (strcmp(items[0].text, "freebsd") == 0)
1203 		gpart_partition(newpartname, "BSD");
1204 	else
1205 		set_default_part_metadata(newpartname, scheme,
1206 		    items[0].text, items[2].text, newfs);
1207 
1208 	for (i = 0; i < nitems(items); i++)
1209 		if (items[i].text_free)
1210 			free(items[i].text);
1211 
1212 	if (partname != NULL)
1213 		*partname = strdup(newpartname);
1214 }
1215 
1216 void
1217 gpart_delete(struct gprovider *pp)
1218 {
1219 	struct gconfig *gc;
1220 	struct ggeom *geom;
1221 	struct gconsumer *cp;
1222 	struct gctl_req *r;
1223 	const char *errstr;
1224 	intmax_t idx;
1225 	int is_partition;
1226 
1227 	/* Is it a partition? */
1228 	is_partition = (strcmp(pp->lg_geom->lg_class->lg_name, "PART") == 0);
1229 
1230 	/* Find out if this is the root of a gpart geom */
1231 	geom = NULL;
1232 	LIST_FOREACH(cp, &pp->lg_consumers, lg_consumers)
1233 		if (strcmp(cp->lg_geom->lg_class->lg_name, "PART") == 0) {
1234 			geom = cp->lg_geom;
1235 			break;
1236 		}
1237 
1238 	/* If so, destroy all children */
1239 	if (geom != NULL) {
1240 		gpart_destroy(geom);
1241 
1242 		/* If this is a partition, revert it, so it can be deleted */
1243 		if (is_partition) {
1244 			r = gctl_get_handle();
1245 			gctl_ro_param(r, "class", -1, "PART");
1246 			gctl_ro_param(r, "arg0", -1, geom->lg_name);
1247 			gctl_ro_param(r, "verb", -1, "undo");
1248 			gctl_issue(r); /* Ignore non-fatal errors */
1249 			gctl_free(r);
1250 		}
1251 	}
1252 
1253 	/*
1254 	 * If this is not a partition, see if that is a problem, complain if
1255 	 * necessary, and return always, since we need not do anything further,
1256 	 * error or no.
1257 	 */
1258 	if (!is_partition) {
1259 		if (geom == NULL)
1260 			dialog_msgbox("Error",
1261 			    "Only partitions can be deleted.", 0, 0, TRUE);
1262 		return;
1263 	}
1264 
1265 	r = gctl_get_handle();
1266 	gctl_ro_param(r, "class", -1, pp->lg_geom->lg_class->lg_name);
1267 	gctl_ro_param(r, "arg0", -1, pp->lg_geom->lg_name);
1268 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
1269 	gctl_ro_param(r, "verb", -1, "delete");
1270 
1271 	LIST_FOREACH(gc, &pp->lg_config, lg_config) {
1272 		if (strcmp(gc->lg_name, "index") == 0) {
1273 			idx = atoi(gc->lg_val);
1274 			gctl_ro_param(r, "index", sizeof(idx), &idx);
1275 			break;
1276 		}
1277 	}
1278 
1279 	errstr = gctl_issue(r);
1280 	if (errstr != NULL && errstr[0] != '\0') {
1281 		gpart_show_error("Error", NULL, errstr);
1282 		gctl_free(r);
1283 		return;
1284 	}
1285 
1286 	gctl_free(r);
1287 
1288 	delete_part_metadata(pp->lg_name);
1289 }
1290 
1291 void
1292 gpart_revert_all(struct gmesh *mesh)
1293 {
1294 	struct gclass *classp;
1295 	struct gconfig *gc;
1296 	struct ggeom *gp;
1297 	struct gctl_req *r;
1298 	const char *modified;
1299 
1300 	LIST_FOREACH(classp, &mesh->lg_class, lg_class) {
1301 		if (strcmp(classp->lg_name, "PART") == 0)
1302 			break;
1303 	}
1304 
1305 	if (strcmp(classp->lg_name, "PART") != 0) {
1306 		dialog_msgbox("Error", "gpart not found!", 0, 0, TRUE);
1307 		return;
1308 	}
1309 
1310 	LIST_FOREACH(gp, &classp->lg_geom, lg_geom) {
1311 		modified = "true"; /* XXX: If we don't know (kernel too old),
1312 				    * assume there are modifications. */
1313 		LIST_FOREACH(gc, &gp->lg_config, lg_config) {
1314 			if (strcmp(gc->lg_name, "modified") == 0) {
1315 				modified = gc->lg_val;
1316 				break;
1317 			}
1318 		}
1319 
1320 		if (strcmp(modified, "false") == 0)
1321 			continue;
1322 
1323 		r = gctl_get_handle();
1324 		gctl_ro_param(r, "class", -1, "PART");
1325 		gctl_ro_param(r, "arg0", -1, gp->lg_name);
1326 		gctl_ro_param(r, "verb", -1, "undo");
1327 
1328 		gctl_issue(r);
1329 		gctl_free(r);
1330 	}
1331 }
1332 
1333 void
1334 gpart_commit(struct gmesh *mesh)
1335 {
1336 	struct partition_metadata *md;
1337 	struct gclass *classp;
1338 	struct ggeom *gp;
1339 	struct gconfig *gc;
1340 	struct gconsumer *cp;
1341 	struct gprovider *pp;
1342 	struct gctl_req *r;
1343 	const char *errstr;
1344 	const char *modified;
1345 	const char *rootfs;
1346 
1347 	LIST_FOREACH(classp, &mesh->lg_class, lg_class) {
1348 		if (strcmp(classp->lg_name, "PART") == 0)
1349 			break;
1350 	}
1351 
1352 	/* Figure out what filesystem / uses */
1353 	rootfs = "ufs"; /* Assume ufs if nothing else present */
1354 	TAILQ_FOREACH(md, &part_metadata, metadata) {
1355 		if (md->fstab != NULL && strcmp(md->fstab->fs_file, "/") == 0) {
1356 			rootfs = md->fstab->fs_vfstype;
1357 			break;
1358 		}
1359 	}
1360 
1361 	if (strcmp(classp->lg_name, "PART") != 0) {
1362 		dialog_msgbox("Error", "gpart not found!", 0, 0, TRUE);
1363 		return;
1364 	}
1365 
1366 	LIST_FOREACH(gp, &classp->lg_geom, lg_geom) {
1367 		modified = "true"; /* XXX: If we don't know (kernel too old),
1368 				    * assume there are modifications. */
1369 		LIST_FOREACH(gc, &gp->lg_config, lg_config) {
1370 			if (strcmp(gc->lg_name, "modified") == 0) {
1371 				modified = gc->lg_val;
1372 				break;
1373 			}
1374 		}
1375 
1376 		if (strcmp(modified, "false") == 0)
1377 			continue;
1378 
1379 		/* Add bootcode if necessary, before the commit */
1380 		md = get_part_metadata(gp->lg_name, 0);
1381 		if (md != NULL && md->bootcode)
1382 			gpart_bootcode(gp);
1383 
1384 		/* Now install partcode on its partitions, if necessary */
1385 		LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
1386 			md = get_part_metadata(pp->lg_name, 0);
1387 			if (md == NULL || !md->bootcode)
1388 				continue;
1389 
1390 			/* Mark this partition active if that's required */
1391 			gpart_activate(pp);
1392 
1393 			/* Check if the partition has sub-partitions */
1394 			LIST_FOREACH(cp, &pp->lg_consumers, lg_consumers)
1395 				if (strcmp(cp->lg_geom->lg_class->lg_name,
1396 				    "PART") == 0)
1397 					break;
1398 
1399 			if (cp == NULL) /* No sub-partitions */
1400 				gpart_partcode(pp, rootfs);
1401 		}
1402 
1403 		r = gctl_get_handle();
1404 		gctl_ro_param(r, "class", -1, "PART");
1405 		gctl_ro_param(r, "arg0", -1, gp->lg_name);
1406 		gctl_ro_param(r, "verb", -1, "commit");
1407 
1408 		errstr = gctl_issue(r);
1409 		if (errstr != NULL && errstr[0] != '\0')
1410 			gpart_show_error("Error", NULL, errstr);
1411 		gctl_free(r);
1412 	}
1413 }
1414 
1415