1 /*-
2  * Copyright (c) 2011 Nathan Whitehorn
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #include <sys/param.h>
30 #include <sys/stat.h>
31 #include <errno.h>
32 #include <libutil.h>
33 #include <inttypes.h>
34 
35 #include <libgeom.h>
36 #include <dialog.h>
37 #include <dlg_keys.h>
38 
39 #include "partedit.h"
40 
41 #define GPART_FLAGS "x" /* Do not commit changes by default */
42 
43 static void
44 gpart_show_error(const char *title, const char *explanation, const char *errstr)
45 {
46 	char *errmsg;
47 	char message[512];
48 	int error;
49 
50 	if (explanation == NULL)
51 		explanation = "";
52 
53 	error = strtol(errstr, &errmsg, 0);
54 	if (errmsg != errstr) {
55 		while (errmsg[0] == ' ')
56 			errmsg++;
57 		if (errmsg[0] != '\0')
58 			sprintf(message, "%s%s. %s", explanation,
59 			    strerror(error), errmsg);
60 		else
61 			sprintf(message, "%s%s", explanation, strerror(error));
62 	} else {
63 		sprintf(message, "%s%s", explanation, errmsg);
64 	}
65 
66 	dialog_msgbox(title, message, 0, 0, TRUE);
67 }
68 
69 static int
70 scheme_supports_labels(const char *scheme)
71 {
72 	if (strcmp(scheme, "APM") == 0)
73 		return (1);
74 	if (strcmp(scheme, "GPT") == 0)
75 		return (1);
76 	if (strcmp(scheme, "PC98") == 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 			    sizeof(items)/sizeof(items[0]), 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)(sizeof(items)/sizeof(items[0])); 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 			    sizeof(items)/sizeof(items[0]), 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 			sprintf(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)(sizeof(items)/sizeof(items[0])); 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 			    sizeof(items)/sizeof(items[0]), 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)(sizeof(items)/sizeof(items[0])); 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 		{"PC98", "NEC PC9801 Partition Table",
225 		    "Bootable on NEC PC9801 systems", 0 },
226 		{"VTOC8", "Sun VTOC8 Partition Table",
227 		    "Bootable on Sun SPARC systems", 0 },
228 	};
229 
230 parttypemenu:
231 	dialog_vars.default_item = __DECONST(char *, def_scheme);
232 	cancel = dlg_menu("Partition Scheme",
233 	    "Select a partition scheme for this volume:", 0, 0, 0,
234 	    sizeof(items) / sizeof(items[0]), items, &choice, NULL);
235 	dialog_vars.default_item = NULL;
236 
237 	if (cancel)
238 		return NULL;
239 
240 	if (!is_scheme_bootable(items[choice].name)) {
241 		char message[512];
242 		sprintf(message, "This partition scheme (%s) is not "
243 		    "bootable on this platform. Are you sure you want "
244 		    "to proceed?", items[choice].name);
245 		dialog_vars.defaultno = TRUE;
246 		cancel = dialog_yesno("Warning", message, 0, 0);
247 		dialog_vars.defaultno = FALSE;
248 		if (cancel) /* cancel */
249 			goto parttypemenu;
250 	}
251 
252 	scheme = items[choice].name;
253 
254 	return scheme;
255 }
256 
257 int
258 gpart_partition(const char *lg_name, const char *scheme)
259 {
260 	int cancel;
261 	struct gctl_req *r;
262 	const char *errstr;
263 
264 schememenu:
265 	if (scheme == NULL) {
266 		scheme = choose_part_type(default_scheme());
267 
268 		if (scheme == NULL)
269 			return (-1);
270 
271 		if (!is_scheme_bootable(scheme)) {
272 			char message[512];
273 			sprintf(message, "This partition scheme (%s) is not "
274 			    "bootable on this platform. Are you sure you want "
275 			    "to proceed?", scheme);
276 			dialog_vars.defaultno = TRUE;
277 			cancel = dialog_yesno("Warning", message, 0, 0);
278 			dialog_vars.defaultno = FALSE;
279 			if (cancel) { /* cancel */
280 				/* Reset scheme so user can choose another */
281 				scheme = NULL;
282 				goto schememenu;
283 			}
284 		}
285 	}
286 
287 	r = gctl_get_handle();
288 	gctl_ro_param(r, "class", -1, "PART");
289 	gctl_ro_param(r, "arg0", -1, lg_name);
290 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
291 	gctl_ro_param(r, "scheme", -1, scheme);
292 	gctl_ro_param(r, "verb", -1, "create");
293 
294 	errstr = gctl_issue(r);
295 	if (errstr != NULL && errstr[0] != '\0') {
296 		gpart_show_error("Error", NULL, errstr);
297 		gctl_free(r);
298 		scheme = NULL;
299 		goto schememenu;
300 	}
301 	gctl_free(r);
302 
303 	if (bootcode_path(scheme) != NULL)
304 		get_part_metadata(lg_name, 1)->bootcode = 1;
305 	return (0);
306 }
307 
308 static void
309 gpart_activate(struct gprovider *pp)
310 {
311 	struct gconfig *gc;
312 	struct gctl_req *r;
313 	const char *errstr, *scheme;
314 	const char *attribute = NULL;
315 	intmax_t idx;
316 
317 	/*
318 	 * Some partition schemes need this partition to be marked 'active'
319 	 * for it to be bootable.
320 	 */
321 	LIST_FOREACH(gc, &pp->lg_geom->lg_config, lg_config) {
322 		if (strcmp(gc->lg_name, "scheme") == 0) {
323 			scheme = gc->lg_val;
324 			break;
325 		}
326 	}
327 
328 	if (strcmp(scheme, "MBR") == 0 || strcmp(scheme, "EBR") == 0 ||
329 	    strcmp(scheme, "PC98") == 0)
330 		attribute = "active";
331 	else
332 		return;
333 
334 	LIST_FOREACH(gc, &pp->lg_config, lg_config) {
335 		if (strcmp(gc->lg_name, "index") == 0) {
336 			idx = atoi(gc->lg_val);
337 			break;
338 		}
339 	}
340 
341 	r = gctl_get_handle();
342 	gctl_ro_param(r, "class", -1, "PART");
343 	gctl_ro_param(r, "arg0", -1, pp->lg_geom->lg_name);
344 	gctl_ro_param(r, "verb", -1, "set");
345 	gctl_ro_param(r, "attrib", -1, attribute);
346 	gctl_ro_param(r, "index", sizeof(idx), &idx);
347 
348 	errstr = gctl_issue(r);
349 	if (errstr != NULL && errstr[0] != '\0')
350 		gpart_show_error("Error", "Error marking partition active:",
351 		    errstr);
352 	gctl_free(r);
353 }
354 
355 void
356 gpart_set_root(const char *lg_name, const char *attribute)
357 {
358 	struct gctl_req *r;
359 	const char *errstr;
360 
361 	r = gctl_get_handle();
362 	gctl_ro_param(r, "class", -1, "PART");
363 	gctl_ro_param(r, "arg0", -1, lg_name);
364 	gctl_ro_param(r, "flags", -1, "C");
365 	gctl_ro_param(r, "verb", -1, "set");
366 	gctl_ro_param(r, "attrib", -1, attribute);
367 
368 	errstr = gctl_issue(r);
369 	if (errstr != NULL && errstr[0] != '\0')
370 		gpart_show_error("Error", "Error setting parameter on disk:",
371 		    errstr);
372 	gctl_free(r);
373 }
374 
375 static void
376 gpart_bootcode(struct ggeom *gp)
377 {
378 	const char *bootcode;
379 	struct gconfig *gc;
380 	struct gctl_req *r;
381 	const char *errstr, *scheme;
382 	uint8_t *boot;
383 	size_t bootsize, bytes;
384 	int bootfd;
385 
386 	/*
387 	 * Write default bootcode to the newly partitioned disk, if that
388 	 * applies on this platform.
389 	 */
390 	LIST_FOREACH(gc, &gp->lg_config, lg_config) {
391 		if (strcmp(gc->lg_name, "scheme") == 0) {
392 			scheme = gc->lg_val;
393 			break;
394 		}
395 	}
396 
397 	bootcode = bootcode_path(scheme);
398 	if (bootcode == NULL)
399 		return;
400 
401 	bootfd = open(bootcode, O_RDONLY);
402 	if (bootfd < 0) {
403 		dialog_msgbox("Bootcode Error", strerror(errno), 0, 0,
404 		    TRUE);
405 		return;
406 	}
407 
408 	bootsize = lseek(bootfd, 0, SEEK_END);
409 	boot = malloc(bootsize);
410 	lseek(bootfd, 0, SEEK_SET);
411 	bytes = 0;
412 	while (bytes < bootsize)
413 		bytes += read(bootfd, boot + bytes, bootsize - bytes);
414 	close(bootfd);
415 
416 	r = gctl_get_handle();
417 	gctl_ro_param(r, "class", -1, "PART");
418 	gctl_ro_param(r, "arg0", -1, gp->lg_name);
419 	gctl_ro_param(r, "verb", -1, "bootcode");
420 	gctl_ro_param(r, "bootcode", bootsize, boot);
421 
422 	errstr = gctl_issue(r);
423 	if (errstr != NULL && errstr[0] != '\0')
424 		gpart_show_error("Bootcode Error", NULL, errstr);
425 	gctl_free(r);
426 	free(boot);
427 }
428 
429 static void
430 gpart_partcode(struct gprovider *pp, const char *fstype)
431 {
432 	struct gconfig *gc;
433 	const char *scheme;
434 	const char *indexstr;
435 	char message[255], command[255];
436 
437 	LIST_FOREACH(gc, &pp->lg_geom->lg_config, lg_config) {
438 		if (strcmp(gc->lg_name, "scheme") == 0) {
439 			scheme = gc->lg_val;
440 			break;
441 		}
442 	}
443 
444 	/* Make sure this partition scheme needs partcode on this platform */
445 	if (partcode_path(scheme, fstype) == NULL)
446 		return;
447 
448 	LIST_FOREACH(gc, &pp->lg_config, lg_config) {
449 		if (strcmp(gc->lg_name, "index") == 0) {
450 			indexstr = gc->lg_val;
451 			break;
452 		}
453 	}
454 
455 	/* Shell out to gpart for partcode for now */
456 	sprintf(command, "gpart bootcode -p %s -i %s %s",
457 	    partcode_path(scheme, fstype), indexstr, pp->lg_geom->lg_name);
458 	if (system(command) != 0) {
459 		sprintf(message, "Error installing partcode on partition %s",
460 		    pp->lg_name);
461 		dialog_msgbox("Error", message, 0, 0, TRUE);
462 	}
463 }
464 
465 void
466 gpart_destroy(struct ggeom *lg_geom)
467 {
468 	struct gctl_req *r;
469 	struct gprovider *pp;
470 	const char *errstr;
471 	int force = 1;
472 
473 	/* Delete all child metadata */
474 	LIST_FOREACH(pp, &lg_geom->lg_provider, lg_provider)
475 		gpart_delete(pp);
476 
477 	/* Revert any local changes to get this geom into a pristine state */
478 	r = gctl_get_handle();
479 	gctl_ro_param(r, "class", -1, "PART");
480 	gctl_ro_param(r, "arg0", -1, lg_geom->lg_name);
481 	gctl_ro_param(r, "verb", -1, "undo");
482 	gctl_issue(r); /* Ignore errors -- these are non-fatal */
483 	gctl_free(r);
484 
485 	/* Now destroy the geom itself */
486 	r = gctl_get_handle();
487 	gctl_ro_param(r, "class", -1, "PART");
488 	gctl_ro_param(r, "arg0", -1, lg_geom->lg_name);
489 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
490 	gctl_ro_param(r, "force", sizeof(force), &force);
491 	gctl_ro_param(r, "verb", -1, "destroy");
492 	errstr = gctl_issue(r);
493 	if (errstr != NULL && errstr[0] != '\0') {
494 		/*
495 		 * Check if we reverted away the existence of the geom
496 		 * altogether. Show all other errors to the user.
497 		 */
498 		if (strtol(errstr, NULL, 0) != EINVAL)
499 			gpart_show_error("Error", NULL, errstr);
500 	}
501 	gctl_free(r);
502 
503 	/* And any metadata associated with the partition scheme itself */
504 	delete_part_metadata(lg_geom->lg_name);
505 }
506 
507 void
508 gpart_edit(struct gprovider *pp)
509 {
510 	struct gctl_req *r;
511 	struct gconfig *gc;
512 	struct gconsumer *cp;
513 	struct ggeom *geom;
514 	const char *errstr, *oldtype, *scheme;
515 	struct partition_metadata *md;
516 	char sizestr[32];
517 	char newfs[255];
518 	intmax_t idx;
519 	int hadlabel, choice, junk, nitems;
520 	unsigned i;
521 
522 	DIALOG_FORMITEM items[] = {
523 		{0, "Type:", 5, 0, 0, FALSE, "", 11, 0, 12, 15, 0,
524 		    FALSE, "Filesystem type (e.g. freebsd-ufs, freebsd-zfs, "
525 		    "freebsd-swap)", FALSE},
526 		{0, "Size:", 5, 1, 0, FALSE, "", 11, 1, 12, 0, 0,
527 		    FALSE, "Partition size. Append K, M, G for kilobytes, "
528 		    "megabytes or gigabytes.", FALSE},
529 		{0, "Mountpoint:", 11, 2, 0, FALSE, "", 11, 2, 12, 15, 0,
530 		    FALSE, "Path at which to mount this partition (leave blank "
531 		    "for swap, set to / for root filesystem)", FALSE},
532 		{0, "Label:", 7, 3, 0, FALSE, "", 11, 3, 12, 15, 0, FALSE,
533 		    "Partition name. Not all partition schemes support this.",
534 		    FALSE},
535 	};
536 
537 	/*
538 	 * Find the PART geom we are manipulating. This may be a consumer of
539 	 * this provider, or its parent. Check the consumer case first.
540 	 */
541 	geom = NULL;
542 	LIST_FOREACH(cp, &pp->lg_consumers, lg_consumers)
543 		if (strcmp(cp->lg_geom->lg_class->lg_name, "PART") == 0) {
544 			/* Check for zombie geoms, treating them as blank */
545 			scheme = NULL;
546 			LIST_FOREACH(gc, &cp->lg_geom->lg_config, lg_config) {
547 				if (strcmp(gc->lg_name, "scheme") == 0) {
548 					scheme = gc->lg_val;
549 					break;
550 				}
551 			}
552 			if (scheme == NULL || strcmp(scheme, "(none)") == 0) {
553 				gpart_partition(cp->lg_geom->lg_name, NULL);
554 				return;
555 			}
556 
557 			/* If this is a nested partition, edit as usual */
558 			if (strcmp(pp->lg_geom->lg_class->lg_name, "PART") == 0)
559 				break;
560 
561 			/* Destroy the geom and all sub-partitions */
562 			gpart_destroy(cp->lg_geom);
563 
564 			/* Now re-partition and return */
565 			gpart_partition(cp->lg_geom->lg_name, NULL);
566 			return;
567 		}
568 
569 	if (geom == NULL && strcmp(pp->lg_geom->lg_class->lg_name, "PART") == 0)
570 		geom = pp->lg_geom;
571 
572 	if (geom == NULL) {
573 		/* Disk not partitioned, so partition it */
574 		gpart_partition(pp->lg_name, NULL);
575 		return;
576 	}
577 
578 	LIST_FOREACH(gc, &geom->lg_config, lg_config) {
579 		if (strcmp(gc->lg_name, "scheme") == 0) {
580 			scheme = gc->lg_val;
581 			break;
582 		}
583 	}
584 
585 	nitems = scheme_supports_labels(scheme) ? 4 : 3;
586 
587 	/* Edit editable parameters of a partition */
588 	hadlabel = 0;
589 	LIST_FOREACH(gc, &pp->lg_config, lg_config) {
590 		if (strcmp(gc->lg_name, "type") == 0) {
591 			oldtype = gc->lg_val;
592 			items[0].text = gc->lg_val;
593 		}
594 		if (strcmp(gc->lg_name, "label") == 0 && gc->lg_val != NULL) {
595 			hadlabel = 1;
596 			items[3].text = gc->lg_val;
597 		}
598 		if (strcmp(gc->lg_name, "index") == 0)
599 			idx = atoi(gc->lg_val);
600 	}
601 
602 	TAILQ_FOREACH(md, &part_metadata, metadata) {
603 		if (md->name != NULL && strcmp(md->name, pp->lg_name) == 0) {
604 			if (md->fstab != NULL)
605 				items[2].text = md->fstab->fs_file;
606 			break;
607 		}
608 	}
609 
610 	humanize_number(sizestr, 7, pp->lg_mediasize, "B", HN_AUTOSCALE,
611 	    HN_NOSPACE | HN_DECIMAL);
612 	items[1].text = sizestr;
613 
614 editpart:
615 	choice = dlg_form("Edit Partition", "", 0, 0, 0, nitems, items, &junk);
616 
617 	if (choice) /* Cancel pressed */
618 		goto endedit;
619 
620 	/* If this is the root partition, check that this fs is bootable */
621 	if (strcmp(items[2].text, "/") == 0 && !is_fs_bootable(scheme,
622 	    items[0].text)) {
623 		char message[512];
624 		sprintf(message, "This file system (%s) is not bootable "
625 		    "on this system. Are you sure you want to proceed?",
626 		    items[0].text);
627 		dialog_vars.defaultno = TRUE;
628 		choice = dialog_yesno("Warning", message, 0, 0);
629 		dialog_vars.defaultno = FALSE;
630 		if (choice == 1) /* cancel */
631 			goto editpart;
632 	}
633 
634 	/* Check if the label has a / in it */
635 	if (strchr(items[3].text, '/') != NULL) {
636 		dialog_msgbox("Error", "Label contains a /, which is not an "
637 		    "allowed character.", 0, 0, TRUE);
638 		goto editpart;
639 	}
640 
641 	r = gctl_get_handle();
642 	gctl_ro_param(r, "class", -1, "PART");
643 	gctl_ro_param(r, "arg0", -1, geom->lg_name);
644 	gctl_ro_param(r, "flags", -1, GPART_FLAGS);
645 	gctl_ro_param(r, "verb", -1, "modify");
646 	gctl_ro_param(r, "index", sizeof(idx), &idx);
647 	if (hadlabel || items[3].text[0] != '\0')
648 		gctl_ro_param(r, "label", -1, items[3].text);
649 	gctl_ro_param(r, "type", -1, items[0].text);
650 	errstr = gctl_issue(r);
651 	if (errstr != NULL && errstr[0] != '\0') {
652 		gpart_show_error("Error", NULL, errstr);
653 		gctl_free(r);
654 		goto editpart;
655 	}
656 	gctl_free(r);
657 
658 	newfs_command(items[0].text, newfs, 1);
659 	set_default_part_metadata(pp->lg_name, scheme, items[0].text,
660 	    items[2].text, (strcmp(oldtype, items[0].text) != 0) ?
661 	    newfs : NULL);
662 
663 endedit:
664 	if (strcmp(oldtype, items[0].text) != 0 && cp != NULL)
665 		gpart_destroy(cp->lg_geom);
666 	if (strcmp(oldtype, items[0].text) != 0 && strcmp(items[0].text,
667 	    "freebsd") == 0)
668 		gpart_partition(pp->lg_name, "BSD");
669 
670 	for (i = 0; i < (sizeof(items) / sizeof(items[0])); i++)
671 		if (items[i].text_free)
672 			free(items[i].text);
673 }
674 
675 void
676 set_default_part_metadata(const char *name, const char *scheme,
677     const char *type, const char *mountpoint, const char *newfs)
678 {
679 	struct partition_metadata *md;
680 	char *zpool_name = NULL;
681 	int i;
682 
683 	/* Set part metadata */
684 	md = get_part_metadata(name, 1);
685 
686 	if (newfs) {
687 		if (md->newfs != NULL) {
688 			free(md->newfs);
689 			md->newfs = NULL;
690 		}
691 
692 		if (newfs != NULL && newfs[0] != '\0') {
693 			md->newfs = malloc(strlen(newfs) + strlen(" /dev/") +
694 			    strlen(mountpoint) + 5 + strlen(name) + 1);
695 			if (strcmp("freebsd-zfs", type) == 0) {
696 				zpool_name = strdup((strlen(mountpoint) == 1) ?
697 				    "root" : &mountpoint[1]);
698 				for (i = 0; zpool_name[i] != 0; i++)
699 					if (!isalnum(zpool_name[i]))
700 						zpool_name[i] = '_';
701 				sprintf(md->newfs, "%s %s /dev/%s", newfs,
702 				    zpool_name, name);
703 			} else {
704 				sprintf(md->newfs, "%s /dev/%s", newfs, name);
705 			}
706 		}
707 	}
708 
709 	if (strcmp(type, "freebsd-swap") == 0)
710 		mountpoint = "none";
711 	if (strcmp(type, bootpart_type(scheme)) == 0)
712 		md->bootcode = 1;
713 
714 	/* VTOC8 needs partcode at the start of partitions */
715 	if (strcmp(scheme, "VTOC8") == 0 && (strcmp(type, "freebsd-ufs") == 0
716 	    || strcmp(type, "freebsd-zfs") == 0))
717 		md->bootcode = 1;
718 
719 	if (mountpoint == NULL || mountpoint[0] == '\0') {
720 		if (md->fstab != NULL) {
721 			free(md->fstab->fs_spec);
722 			free(md->fstab->fs_file);
723 			free(md->fstab->fs_vfstype);
724 			free(md->fstab->fs_mntops);
725 			free(md->fstab->fs_type);
726 			free(md->fstab);
727 			md->fstab = NULL;
728 		}
729 	} else {
730 		if (md->fstab == NULL) {
731 			md->fstab = malloc(sizeof(struct fstab));
732 		} else {
733 			free(md->fstab->fs_spec);
734 			free(md->fstab->fs_file);
735 			free(md->fstab->fs_vfstype);
736 			free(md->fstab->fs_mntops);
737 			free(md->fstab->fs_type);
738 		}
739 		if (strcmp("freebsd-zfs", type) == 0) {
740 			md->fstab->fs_spec = strdup(zpool_name);
741 		} else {
742 			md->fstab->fs_spec = malloc(strlen(name) +
743 			    strlen("/dev/") + 1);
744 			sprintf(md->fstab->fs_spec, "/dev/%s", name);
745 		}
746 		md->fstab->fs_file = strdup(mountpoint);
747 		/* Get VFS from text after freebsd-, if possible */
748 		if (strncmp("freebsd-", type, 8) == 0)
749 			md->fstab->fs_vfstype = strdup(&type[8]);
750 		else if (strcmp("fat32", type) == 0 || strcmp("efi", type) == 0)
751 			md->fstab->fs_vfstype = strdup("msdosfs");
752 		else
753 			md->fstab->fs_vfstype = strdup(type); /* Guess */
754 		if (strcmp(type, "freebsd-swap") == 0) {
755 			md->fstab->fs_type = strdup(FSTAB_SW);
756 			md->fstab->fs_freq = 0;
757 			md->fstab->fs_passno = 0;
758 		} else if (strcmp(type, "freebsd-zfs") == 0) {
759 			md->fstab->fs_type = strdup(FSTAB_RW);
760 			md->fstab->fs_freq = 0;
761 			md->fstab->fs_passno = 0;
762 		} else {
763 			md->fstab->fs_type = strdup(FSTAB_RW);
764 			if (strcmp(mountpoint, "/") == 0) {
765 				md->fstab->fs_freq = 1;
766 				md->fstab->fs_passno = 1;
767 			} else {
768 				md->fstab->fs_freq = 2;
769 				md->fstab->fs_passno = 2;
770 			}
771 		}
772 		md->fstab->fs_mntops = strdup(md->fstab->fs_type);
773 	}
774 
775 	if (zpool_name != NULL)
776 		free(zpool_name);
777 }
778 
779 static
780 int part_compare(const void *xa, const void *xb)
781 {
782 	struct gprovider **a = (struct gprovider **)xa;
783 	struct gprovider **b = (struct gprovider **)xb;
784 	intmax_t astart, bstart;
785 	struct gconfig *gc;
786 
787 	astart = bstart = 0;
788 	LIST_FOREACH(gc, &(*a)->lg_config, lg_config)
789 		if (strcmp(gc->lg_name, "start") == 0) {
790 			astart = strtoimax(gc->lg_val, NULL, 0);
791 			break;
792 		}
793 	LIST_FOREACH(gc, &(*b)->lg_config, lg_config)
794 		if (strcmp(gc->lg_name, "start") == 0) {
795 			bstart = strtoimax(gc->lg_val, NULL, 0);
796 			break;
797 		}
798 
799 	if (astart < bstart)
800 		return -1;
801 	else if (astart > bstart)
802 		return 1;
803 	else
804 		return 0;
805 }
806 
807 intmax_t
808 gpart_max_free(struct ggeom *geom, intmax_t *npartstart)
809 {
810 	struct gconfig *gc;
811 	struct gprovider *pp, **providers;
812 	intmax_t sectorsize, stripesize, offset;
813 	intmax_t lastend;
814 	intmax_t start, end;
815 	intmax_t maxsize, maxstart;
816 	intmax_t partstart, partend;
817 	int i, nparts;
818 
819 	/* Now get the maximum free size and free start */
820 	start = end = 0;
821 	LIST_FOREACH(gc, &geom->lg_config, lg_config) {
822 		if (strcmp(gc->lg_name, "first") == 0)
823 			start = strtoimax(gc->lg_val, NULL, 0);
824 		if (strcmp(gc->lg_name, "last") == 0)
825 			end = strtoimax(gc->lg_val, NULL, 0);
826 	}
827 
828 	i = nparts = 0;
829 	LIST_FOREACH(pp, &geom->lg_provider, lg_provider)
830 		nparts++;
831 	providers = calloc(nparts, sizeof(providers[0]));
832 	LIST_FOREACH(pp, &geom->lg_provider, lg_provider)
833 		providers[i++] = pp;
834 	qsort(providers, nparts, sizeof(providers[0]), part_compare);
835 
836 	lastend = start - 1;
837 	maxsize = 0;
838 	for (i = 0; i < nparts; i++) {
839 		pp = providers[i];
840 
841 		LIST_FOREACH(gc, &pp->lg_config, lg_config) {
842 			if (strcmp(gc->lg_name, "start") == 0)
843 				partstart = strtoimax(gc->lg_val, NULL, 0);
844 			if (strcmp(gc->lg_name, "end") == 0)
845 				partend = strtoimax(gc->lg_val, NULL, 0);
846 		}
847 
848 		if (partstart - lastend > maxsize) {
849 			maxsize = partstart - lastend - 1;
850 			maxstart = lastend + 1;
851 		}
852 
853 		lastend = partend;
854 	}
855 
856 	if (end - lastend > maxsize) {
857 		maxsize = end - lastend - 1;
858 		maxstart = lastend + 1;
859 	}
860 
861 	pp = LIST_FIRST(&geom->lg_consumer)->lg_provider;
862 
863 	/*
864 	 * Round the start and size of the largest available space up to
865 	 * the nearest multiple of the adjusted stripe size.
866 	 *
867 	 * The adjusted stripe size is the least common multiple of the
868 	 * actual stripe size, or the sector size if no stripe size was
869 	 * reported, and 4096.  The reason for this is that contemporary
870 	 * disks often have 4096-byte physical sectors but report 512
871 	 * bytes instead for compatibility with older / broken operating
872 	 * systems and BIOSes.  For the same reasons, virtualized storage
873 	 * may also report a 512-byte stripe size, or none at all.
874 	 */
875 	sectorsize = pp->lg_sectorsize;
876 	if ((stripesize = pp->lg_stripesize) == 0)
877 		stripesize = sectorsize;
878 	while (stripesize % 4096 != 0)
879 		stripesize *= 2;
880 	if ((offset = maxstart * sectorsize % stripesize) != 0) {
881 		offset = (stripesize - offset) / sectorsize;
882 		maxstart += offset;
883 		maxsize -= offset;
884 	}
885 
886 	if (npartstart != NULL)
887 		*npartstart = maxstart;
888 
889 	return (maxsize);
890 }
891 
892 void
893 gpart_create(struct gprovider *pp, char *default_type, char *default_size,
894      char *default_mountpoint, char **partname, int interactive)
895 {
896 	struct gctl_req *r;
897 	struct gconfig *gc;
898 	struct gconsumer *cp;
899 	struct ggeom *geom;
900 	const char *errstr, *scheme;
901 	char sizestr[32], startstr[32], output[64], *newpartname;
902 	char newfs[255], options_fstype[64];
903 	intmax_t maxsize, size, sector, firstfree, stripe;
904 	uint64_t bytes;
905 	int nitems, choice, junk;
906 	unsigned i;
907 
908 	DIALOG_FORMITEM items[] = {
909 		{0, "Type:", 5, 0, 0, FALSE, "freebsd-ufs", 11, 0, 12, 15, 0,
910 		    FALSE, "Filesystem type (e.g. freebsd-ufs, freebsd-zfs, "
911 		    "freebsd-swap)", FALSE},
912 		{0, "Size:", 5, 1, 0, FALSE, "", 11, 1, 12, 15, 0,
913 		    FALSE, "Partition size. Append K, M, G for kilobytes, "
914 		    "megabytes or gigabytes.", FALSE},
915 		{0, "Mountpoint:", 11, 2, 0, FALSE, "", 11, 2, 12, 15, 0,
916 		    FALSE, "Path at which to mount partition (blank for "
917 		    "swap, / for root filesystem)", FALSE},
918 		{0, "Label:", 7, 3, 0, FALSE, "", 11, 3, 12, 15, 0, FALSE,
919 		    "Partition name. Not all partition schemes support this.",
920 		    FALSE},
921 	};
922 
923 	if (partname != NULL)
924 		*partname = NULL;
925 
926 	/* Record sector and stripe sizes */
927 	sector = pp->lg_sectorsize;
928 	stripe = pp->lg_stripesize;
929 
930 	/*
931 	 * Find the PART geom we are manipulating. This may be a consumer of
932 	 * this provider, or its parent. Check the consumer case first.
933 	 */
934 	geom = NULL;
935 	LIST_FOREACH(cp, &pp->lg_consumers, lg_consumers)
936 		if (strcmp(cp->lg_geom->lg_class->lg_name, "PART") == 0) {
937 			geom = cp->lg_geom;
938 			break;
939 		}
940 
941 	if (geom == NULL && strcmp(pp->lg_geom->lg_class->lg_name, "PART") == 0)
942 		geom = pp->lg_geom;
943 
944 	/* Now get the partition scheme */
945 	scheme = NULL;
946 	if (geom != NULL) {
947 		LIST_FOREACH(gc, &geom->lg_config, lg_config)
948 			if (strcmp(gc->lg_name, "scheme") == 0)
949 				scheme = gc->lg_val;
950 	}
951 
952 	if (geom == NULL || scheme == NULL || strcmp(scheme, "(none)") == 0) {
953 		if (gpart_partition(pp->lg_name, NULL) == 0)
954 			dialog_msgbox("",
955 			    "The partition table has been successfully created."
956 			    " Please press Create again to create partitions.",
957 			    0, 0, TRUE);
958 
959 		return;
960 	}
961 
962 	/*
963 	 * If we still don't have a geom, either the user has
964 	 * canceled partitioning or there has been an error which has already
965 	 * been displayed, so bail.
966 	 */
967 	if (geom == NULL)
968 		return;
969 
970 	maxsize = size = gpart_max_free(geom, &firstfree);
971 	if (size <= 0) {
972 		dialog_msgbox("Error", "No free space left on device.", 0, 0,
973 		    TRUE);
974 		return;
975 	}
976 
977 	humanize_number(sizestr, 7, size*sector, "B", HN_AUTOSCALE,
978 	    HN_NOSPACE | HN_DECIMAL);
979 	items[1].text = sizestr;
980 
981 	/* Special-case the MBR default type for nested partitions */
982 	if (strcmp(scheme, "MBR") == 0 || strcmp(scheme, "PC98") == 0) {
983 		items[0].text = "freebsd";
984 		items[0].help = "Filesystem type (e.g. freebsd, fat32)";
985 	}
986 
987 	nitems = scheme_supports_labels(scheme) ? 4 : 3;
988 
989 	if (default_type != NULL)
990 		items[0].text = default_type;
991 	if (default_size != NULL)
992 		items[1].text = default_size;
993 	if (default_mountpoint != NULL)
994 		items[2].text = default_mountpoint;
995 
996 	/* Default options */
997 	strncpy(options_fstype, items[0].text,
998 	    sizeof(options_fstype));
999 	newfs_command(options_fstype, newfs, 1);
1000 addpartform:
1001 	if (interactive) {
1002 		dialog_vars.extra_label = "Options";
1003 		dialog_vars.extra_button = TRUE;
1004 		choice = dlg_form("Add Partition", "", 0, 0, 0, nitems,
1005 		    items, &junk);
1006 		dialog_vars.extra_button = FALSE;
1007 		switch (choice) {
1008 		case 0: /* OK */
1009 			break;
1010 		case 1: /* Cancel */
1011 			return;
1012 		case 3: /* Options */
1013 			strncpy(options_fstype, items[0].text,
1014 			    sizeof(options_fstype));
1015 			newfs_command(options_fstype, newfs, 0);
1016 			goto addpartform;
1017 		}
1018 	}
1019 
1020 	/*
1021 	 * If the user changed the fs type after specifying options, undo
1022 	 * their choices in favor of the new filesystem's defaults.
1023 	 */
1024 	if (strcmp(options_fstype, items[0].text) != 0) {
1025 		strncpy(options_fstype, items[0].text, sizeof(options_fstype));
1026 		newfs_command(options_fstype, newfs, 1);
1027 	}
1028 
1029 	size = maxsize;
1030 	if (strlen(items[1].text) > 0) {
1031 		if (expand_number(items[1].text, &bytes) != 0) {
1032 			char error[512];
1033 
1034 			sprintf(error, "Invalid size: %s\n", strerror(errno));
1035 			dialog_msgbox("Error", error, 0, 0, TRUE);
1036 			goto addpartform;
1037 		}
1038 		size = MIN((intmax_t)(bytes/sector), maxsize);
1039 	}
1040 
1041 	/* Check if the label has a / in it */
1042 	if (strchr(items[3].text, '/') != NULL) {
1043 		dialog_msgbox("Error", "Label contains a /, which is not an "
1044 		    "allowed character.", 0, 0, TRUE);
1045 		goto addpartform;
1046 	}
1047 
1048 	/* Warn if no mountpoint set */
1049 	if (strcmp(items[0].text, "freebsd-ufs") == 0 &&
1050 	    items[2].text[0] != '/') {
1051 		dialog_vars.defaultno = TRUE;
1052 		choice = dialog_yesno("Warning",
1053 		    "This partition does not have a valid mountpoint "
1054 		    "(for the partition from which you intend to boot the "
1055 		    "operating system, the mountpoint should be /). Are you "
1056 		    "sure you want to continue?"
1057 		, 0, 0);
1058 		dialog_vars.defaultno = FALSE;
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 < (sizeof(items) / sizeof(items[0])); 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