1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2012 Milan Jurik. All rights reserved.
24  */
25 
26 /*
27  * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
28  * Copyright 2016 Toomas Soome <tsoome@me.com>
29  * Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
30  * Copyright 2020 2020 Data Direct Networks.
31  */
32 
33 /*
34  * Loader menu management.
35  */
36 
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <wchar.h>
41 #include <errno.h>
42 #include <limits.h>
43 #include <alloca.h>
44 #include <unistd.h>
45 #include <sys/types.h>
46 #include <sys/stat.h>
47 #include <sys/queue.h>
48 #include <libbe.h>
49 #include <ficl.h>
50 #include <ficlplatform/emu.h>
51 #include <ofmt.h>
52 
53 #include "bootadm.h"
54 
55 extern int bam_rootlen;
56 extern int bam_alt_root;
57 extern char *rootbuf;
58 extern char *bam_root;
59 
60 #define	BOOT_DIR	"/boot"
61 #define	CONF_DIR	BOOT_DIR "/conf.d"
62 #define	MENU		BOOT_DIR "/menu.lst"
63 #define	TRANSIENT	BOOT_DIR "/transient.conf"
64 #define	XEN_CONFIG	CONF_DIR "/xen"
65 
66 typedef struct menu_entry {
67 	int me_idx;
68 	boolean_t me_active;
69 	boolean_t me_active_next;
70 	char *me_title;
71 	char *me_type;
72 	char *me_bootfs;
73 	STAILQ_ENTRY(menu_entry) me_next;
74 } menu_entry_t;
75 STAILQ_HEAD(menu_lst, menu_entry);
76 
77 static error_t set_option(struct menu_lst *, char *, char *);
78 static error_t list_entry(struct menu_lst *, char *, char *);
79 static error_t update_entry(struct menu_lst *, char *, char *);
80 static error_t update_temp(struct menu_lst *, char *, char *);
81 static error_t list_setting(struct menu_lst *menu, char *, char *);
82 static error_t disable_hyper(struct menu_lst *, char *, char *);
83 static error_t enable_hyper(struct menu_lst *, char *, char *);
84 
85 /* Menu related sub commands */
86 static subcmd_defn_t menu_subcmds[] = {
87 	"set_option",		OPT_ABSENT,	set_option, 0,	/* PUB */
88 	"list_entry",		OPT_OPTIONAL,	list_entry, 1,	/* PUB */
89 	"update_entry",		OPT_REQ,	update_entry, 0, /* menu */
90 	"update_temp",		OPT_OPTIONAL,	update_temp, 0,	/* reboot */
91 	"list_setting",		OPT_OPTIONAL,	list_setting, 1, /* menu */
92 	"disable_hypervisor",	OPT_ABSENT,	disable_hyper, 0, /* menu */
93 	"enable_hypervisor",	OPT_ABSENT,	enable_hyper, 0, /* menu */
94 	NULL,			0,		NULL, 0 /* must be last */
95 };
96 
97 #define	NUM_COLS	(5)
98 
99 static boolean_t
print_menu_cb(ofmt_arg_t * ofarg,char * buf,uint_t bufsize)100 print_menu_cb(ofmt_arg_t *ofarg, char *buf, uint_t bufsize)
101 {
102 	menu_entry_t *entry = ofarg->ofmt_cbarg;
103 
104 	switch (ofarg->ofmt_id) {
105 	case 0:
106 		(void) snprintf(buf, bufsize, "%d", entry->me_idx);
107 		break;
108 	case 1:
109 		(void) snprintf(buf, bufsize, "%s", entry->me_title);
110 		break;
111 	case 2:
112 		(void) snprintf(buf, bufsize, "%s", entry->me_bootfs);
113 		break;
114 	case 3:
115 		(void) snprintf(buf, bufsize, "%s", entry->me_type);
116 		break;
117 	case 4:
118 		if (entry->me_active_next == B_TRUE) {
119 			(void) snprintf(buf, bufsize, "   T");
120 			break;
121 		}
122 		if (entry->me_active == B_TRUE)
123 			(void) snprintf(buf, bufsize, "   *");
124 		else
125 			(void) snprintf(buf, bufsize, "   -");
126 		break;
127 	default:
128 		return (B_FALSE);
129 	}
130 	return (B_TRUE);
131 }
132 
133 static void
init_hdr_cols(ofmt_field_t * hdr)134 init_hdr_cols(ofmt_field_t *hdr)
135 {
136 	uint_t i;
137 
138 	for (i = 0; i < NUM_COLS; i++) {
139 		char *name = NULL;
140 
141 		switch (i) {
142 		case 0:
143 			name = _("INDEX");
144 			break;
145 		case 1:
146 			name = _("NAME");
147 			break;
148 		case 2:
149 			name = _("DEVICE");
150 			break;
151 		case 3:
152 			name = _("TYPE");
153 			break;
154 		case 4:
155 			name = _("DEFAULT");
156 			break;
157 		}
158 
159 		hdr[i].of_name = name;
160 		hdr[i].of_id = i;
161 		hdr[i].of_cb = print_menu_cb;
162 
163 		if (name != NULL) {
164 			wchar_t wname[128];
165 			size_t sz = mbstowcs(wname, name, sizeof (wname) /
166 			    sizeof (wchar_t));
167 			if (sz > 0) {
168 				int wcsw = wcswidth(wname, sz);
169 				if (wcsw > 0)
170 					hdr[i].of_width = wcsw;
171 				else
172 					hdr[i].of_width = sz;
173 			} else {
174 				hdr[i].of_width = strlen(name);
175 			}
176 		}
177 	}
178 }
179 
180 static void
menu_update_widths(ofmt_field_t * hdr,struct menu_lst * menu)181 menu_update_widths(ofmt_field_t *hdr, struct menu_lst *menu)
182 {
183 	size_t len[NUM_COLS];
184 	menu_entry_t *entry;
185 	int i;
186 
187 	for (i = 0; i < NUM_COLS; i++)
188 		len[i] = hdr[i].of_width + 1;
189 
190 	STAILQ_FOREACH(entry, menu, me_next) {
191 		size_t entry_len;
192 
193 		entry_len = strlen(entry->me_title) + 1;
194 		if (entry_len > len[1])
195 			len[1] = entry_len;
196 
197 		entry_len = strlen(entry->me_bootfs) + 1;
198 		if (entry_len > len[2])
199 			len[2] = entry_len;
200 
201 		entry_len = strlen(entry->me_type) + 1;
202 		if (entry_len > len[3])
203 			len[3] = entry_len;
204 	}
205 
206 	for (i = 0; i < NUM_COLS; i++)
207 		hdr[i].of_width = len[i];
208 }
209 
210 static ofmt_field_t *
init_menu_template(struct menu_lst * menu)211 init_menu_template(struct menu_lst *menu)
212 {
213 	ofmt_field_t *temp;
214 
215 	if ((temp = calloc(NUM_COLS + 1, sizeof (ofmt_field_t))) == NULL)
216 		return (temp);
217 
218 	init_hdr_cols(temp);
219 	menu_update_widths(temp, menu);
220 	return (temp);
221 }
222 
223 static void
print_nodes(boolean_t parsable,struct menu_lst * menu)224 print_nodes(boolean_t parsable, struct menu_lst *menu)
225 {
226 	ofmt_status_t oferr;
227 	ofmt_handle_t ofmt;
228 	uint_t ofmtflags = 0;
229 	ofmt_field_t *menu_template;
230 	menu_entry_t  *entry;
231 
232 	if (parsable == B_TRUE)
233 		ofmtflags = OFMT_PARSABLE;
234 
235 	menu_template = init_menu_template(menu);
236 	oferr = ofmt_open(NULL, menu_template, ofmtflags, 0, &ofmt);
237 
238 	if (oferr != OFMT_SUCCESS) {
239 		char buf[OFMT_BUFSIZE];
240 
241 		(void) ofmt_strerror(ofmt, oferr, buf, sizeof (buf));
242 		(void) printf("bootadm: %s\n", buf);
243 		free(menu_template);
244 		return;
245 	}
246 
247 	STAILQ_FOREACH(entry, menu, me_next)
248 		ofmt_print(ofmt, entry);
249 
250 	ofmt_close(ofmt);
251 	free(menu_template);
252 }
253 
254 /*
255  * Get the be_active_on_boot for bootfs.
256  */
257 static boolean_t
menu_active_on_boot(be_node_list_t * be_nodes,const char * bootfs)258 menu_active_on_boot(be_node_list_t *be_nodes, const char *bootfs)
259 {
260 	be_node_list_t *be_node;
261 	boolean_t rv = B_FALSE;
262 
263 	for (be_node = be_nodes; be_node != NULL;
264 	    be_node = be_node->be_next_node) {
265 		if (strcmp(be_node->be_root_ds, bootfs) == 0) {
266 			rv = be_node->be_active_on_boot;
267 			break;
268 		}
269 	}
270 
271 	return (rv);
272 }
273 
274 /*
275  * Get the be_active_next for bootfs.
276  */
277 static boolean_t
menu_active_next(be_node_list_t * be_nodes,const char * bootfs)278 menu_active_next(be_node_list_t *be_nodes, const char *bootfs)
279 {
280 	be_node_list_t *be_node;
281 	boolean_t rv = B_FALSE;
282 
283 	for (be_node = be_nodes; be_node != NULL;
284 	    be_node = be_node->be_next_node) {
285 		if (strcmp(be_node->be_root_ds, bootfs) == 0) {
286 			rv = be_node->be_active_next;
287 			break;
288 		}
289 	}
290 
291 	return (rv);
292 }
293 
294 error_t
menu_read(struct menu_lst * menu,char * menu_path)295 menu_read(struct menu_lst *menu, char *menu_path)
296 {
297 	FILE *fp;
298 	be_node_list_t *be_nodes;
299 	menu_entry_t *mp;
300 	char buf[PATH_MAX];
301 	char *title;
302 	char *bootfs;
303 	char *type;
304 	char *key, *value;
305 	int i = 0;
306 	int ret = BAM_SUCCESS;
307 
308 	fp = fopen(menu_path, "r");
309 	if (fp == NULL)
310 		return (BAM_ERROR);
311 
312 	if (be_list(NULL, &be_nodes, BE_LIST_DEFAULT) != BE_SUCCESS)
313 		be_nodes = NULL;
314 
315 	/*
316 	 * menu.lst entry is on two lines, one for title, one for bootfs
317 	 * so we process both lines in succession.
318 	 */
319 	title = NULL;
320 	type = NULL;
321 	bootfs = NULL;
322 	do {
323 		if (fgets(buf, PATH_MAX, fp) == NULL) {
324 			if (!feof(fp))
325 				ret = BAM_ERROR;
326 			goto done;
327 		}
328 		key = strtok(buf, " \n");
329 		if (strcmp(key, "title") != 0) {
330 			ret = BAM_ERROR;
331 			goto done;
332 		}
333 		value = strtok(NULL, " \n");
334 		if ((title = strdup(value)) == NULL) {
335 			ret = BAM_ERROR;
336 			goto done;
337 		}
338 
339 		if (fgets(buf, PATH_MAX, fp) == NULL) {
340 			ret = BAM_ERROR;
341 			goto done;
342 		}
343 
344 		key = strtok(buf, " \n");
345 		if ((type = strdup(key)) == NULL) {
346 			ret = BAM_ERROR;
347 			goto done;
348 		}
349 		value = strtok(NULL, " \n");
350 		if ((bootfs = strdup(value)) == NULL) {
351 			ret = BAM_ERROR;
352 			goto done;
353 		}
354 		if ((mp = malloc(sizeof (menu_entry_t))) == NULL) {
355 			ret = BAM_ERROR;
356 			goto done;
357 		}
358 		mp->me_idx = i++;
359 		mp->me_title = title;
360 		mp->me_type = type;
361 		mp->me_bootfs = bootfs;
362 		mp->me_active = menu_active_on_boot(be_nodes, bootfs);
363 		mp->me_active_next = menu_active_next(be_nodes, bootfs);
364 		STAILQ_INSERT_TAIL(menu, mp, me_next);
365 
366 		title = NULL;
367 		type = NULL;
368 		bootfs = NULL;
369 	} while (feof(fp) == 0);
370 
371 done:
372 	free(title);
373 	free(type);
374 	free(bootfs);
375 	(void) fclose(fp);
376 	be_free_list(be_nodes);
377 	return (ret);
378 }
379 
380 void
menu_free(struct menu_lst * menu)381 menu_free(struct menu_lst *menu)
382 {
383 	menu_entry_t *entry;
384 
385 	while (!STAILQ_EMPTY(menu)) {
386 		entry = STAILQ_FIRST(menu);
387 		STAILQ_REMOVE_HEAD(menu, me_next);
388 		free(entry->me_title);
389 		free(entry->me_type);
390 		free(entry->me_bootfs);
391 		free(entry);
392 	}
393 }
394 
395 error_t
bam_loader_menu(char * subcmd,char * opt,int largc,char * largv[])396 bam_loader_menu(char *subcmd, char *opt, int largc, char *largv[])
397 {
398 	error_t		ret;
399 	char		menu_path[PATH_MAX];
400 	char		clean_menu_root[PATH_MAX];
401 	char		menu_root[PATH_MAX];
402 	struct stat	sb;
403 	error_t		(*f)(struct menu_lst *, char *, char *);
404 	char		*special;
405 	char		*pool = NULL;
406 	zfs_mnted_t	zmnted;
407 	char		*zmntpt;
408 	char		*osdev;
409 	char		*osroot;
410 	const char	*fcn = "bam_loader_menu()";
411 	struct menu_lst	menu = {0};
412 
413 	STAILQ_INIT(&menu);
414 
415 	/*
416 	 * Check arguments
417 	 */
418 	ret = check_subcmd_and_options(subcmd, opt, menu_subcmds, &f);
419 	if (ret == BAM_ERROR) {
420 		return (BAM_ERROR);
421 	}
422 
423 	assert(bam_root);
424 
425 	(void) strlcpy(menu_root, bam_root, sizeof (menu_root));
426 	osdev = osroot = NULL;
427 
428 	if (strcmp(subcmd, "update_entry") == 0) {
429 		assert(opt);
430 
431 		osdev = strtok(opt, ",");
432 		assert(osdev);
433 		osroot = strtok(NULL, ",");
434 		if (osroot) {
435 			/* fixup bam_root so that it points at osroot */
436 			if (realpath(osroot, rootbuf) == NULL) {
437 				bam_error(_("cannot resolve path %s: %s\n"),
438 				    osroot, strerror(errno));
439 				return (BAM_ERROR);
440 			}
441 			bam_alt_root = 1;
442 			bam_root  = rootbuf;
443 			bam_rootlen = strlen(rootbuf);
444 		}
445 	}
446 
447 	if (stat(menu_root, &sb) == -1) {
448 		bam_error(_("cannot find menu\n"));
449 		return (BAM_ERROR);
450 	}
451 
452 	if (!is_zfs(menu_root)) {
453 		bam_error(_("only ZFS root is supported\n"));
454 		return (BAM_ERROR);
455 	}
456 
457 	assert(strcmp(menu_root, bam_root) == 0);
458 	special = get_special(menu_root);
459 	INJECT_ERROR1("Z_MENU_GET_SPECIAL", special = NULL);
460 	if (special == NULL) {
461 		bam_error(_("cant find special file for mount-point %s\n"),
462 		    menu_root);
463 		return (BAM_ERROR);
464 	}
465 	pool = strtok(special, "/");
466 	INJECT_ERROR1("Z_MENU_GET_POOL", pool = NULL);
467 	if (pool == NULL) {
468 		free(special);
469 		bam_error(_("cant find pool for mount-point %s\n"), menu_root);
470 		return (BAM_ERROR);
471 	}
472 	BAM_DPRINTF(("%s: derived pool=%s from special\n", fcn, pool));
473 
474 	zmntpt = mount_top_dataset(pool, &zmnted);
475 	INJECT_ERROR1("Z_MENU_MOUNT_TOP_DATASET", zmntpt = NULL);
476 	if (zmntpt == NULL) {
477 		bam_error(_("cannot mount pool dataset for pool: %s\n"), pool);
478 		free(special);
479 		return (BAM_ERROR);
480 	}
481 	BAM_DPRINTF(("%s: top dataset mountpoint=%s\n", fcn, zmntpt));
482 
483 	(void) strlcpy(menu_root, zmntpt, sizeof (menu_root));
484 	BAM_DPRINTF(("%s: zfs menu_root=%s\n", fcn, menu_root));
485 
486 	elide_trailing_slash(menu_root, clean_menu_root,
487 	    sizeof (clean_menu_root));
488 
489 	BAM_DPRINTF(("%s: cleaned menu root is <%s>\n", fcn, clean_menu_root));
490 
491 	(void) strlcpy(menu_path, clean_menu_root, sizeof (menu_path));
492 	(void) strlcat(menu_path, MENU, sizeof (menu_path));
493 
494 	BAM_DPRINTF(("%s: menu path is: %s\n", fcn, menu_path));
495 
496 	/*
497 	 * update_entry is special case, its used by installer
498 	 * and needs to create menu.lst file for loader
499 	 */
500 	if (menu_read(&menu, menu_path) == BAM_ERROR &&
501 	    strcmp(subcmd, "update_entry") != 0) {
502 		bam_error(_("cannot find menu file: %s\n"), menu_path);
503 		if (special != NULL)
504 			free(special);
505 		return (BAM_ERROR);
506 	}
507 
508 	/*
509 	 * If listing the menu, display the menu location
510 	 */
511 	if (strcmp(subcmd, "list_entry") == 0)
512 		bam_print(_("the location for the active menu is: %s\n"),
513 		    menu_path);
514 
515 	/*
516 	 * We already checked the following case in
517 	 * check_subcmd_and_suboptions() above. Complete the
518 	 * final step now.
519 	 */
520 	if (strcmp(subcmd, "set_option") == 0) {
521 		assert(largc == 1 && largv[0] && largv[1] == NULL);
522 		opt = largv[0];
523 	} else if ((strcmp(subcmd, "enable_hypervisor") != 0) &&
524 	    (strcmp(subcmd, "list_setting") != 0)) {
525 		assert(largc == 0 && largv == NULL);
526 	}
527 
528 	/*
529 	 * Once the sub-cmd handler has run
530 	 * only the line field is guaranteed to have valid values
531 	 */
532 	if (strcmp(subcmd, "update_entry") == 0) {
533 		ret = f(&menu, menu_root, osdev);
534 	} else if (strcmp(subcmd, "upgrade") == 0) {
535 		ret = f(&menu, bam_root, menu_root);
536 	} else if (strcmp(subcmd, "list_entry") == 0) {
537 		ret = f(&menu, menu_path, opt);
538 	} else if (strcmp(subcmd, "list_setting") == 0) {
539 		ret = f(&menu, ((largc > 0) ? largv[0] : ""),
540 		    ((largc > 1) ? largv[1] : ""));
541 	} else if (strcmp(subcmd, "disable_hypervisor") == 0) {
542 		if (is_sparc()) {
543 			bam_error(_("%s operation unsupported on SPARC "
544 			    "machines\n"), subcmd);
545 			ret = BAM_ERROR;
546 		} else {
547 			ret = f(&menu, bam_root, NULL);
548 		}
549 	} else if (strcmp(subcmd, "enable_hypervisor") == 0) {
550 		if (is_sparc()) {
551 			bam_error(_("%s operation unsupported on SPARC "
552 			    "machines\n"), subcmd);
553 			ret = BAM_ERROR;
554 		} else {
555 			char *extra_args = NULL;
556 
557 			/*
558 			 * Compress all arguments passed in the largv[] array
559 			 * into one string that can then be appended to the
560 			 * end of the kernel$ string the routine to enable the
561 			 * hypervisor will build.
562 			 *
563 			 * This allows the caller to supply arbitrary unparsed
564 			 * arguments, such as dom0 memory settings or APIC
565 			 * options.
566 			 *
567 			 * This concatenation will be done without ANY syntax
568 			 * checking whatsoever, so it's the responsibility of
569 			 * the caller to make sure the arguments are valid and
570 			 * do not duplicate arguments the conversion routines
571 			 * may create.
572 			 */
573 			if (largc > 0) {
574 				int extra_len, i;
575 
576 				for (extra_len = 0, i = 0; i < largc; i++)
577 					extra_len += strlen(largv[i]);
578 
579 				/*
580 				 * Allocate space for argument strings,
581 				 * intervening spaces and terminating NULL.
582 				 */
583 				extra_args = alloca(extra_len + largc);
584 
585 				(void) strcpy(extra_args, largv[0]);
586 
587 				for (i = 1; i < largc; i++) {
588 					(void) strcat(extra_args, " ");
589 					(void) strcat(extra_args, largv[i]);
590 				}
591 			}
592 
593 			ret = f(&menu, bam_root, extra_args);
594 		}
595 	} else
596 		ret = f(&menu, NULL, opt);
597 
598 	if (ret == BAM_WRITE) {
599 		BAM_DPRINTF(("%s: writing menu to clean-menu-root: <%s>\n",
600 		    fcn, clean_menu_root));
601 		/* ret = menu_write(clean_menu_root, menu); */
602 	}
603 
604 	INJECT_ERROR1("POOL_SET", pool = "/pooldata");
605 	assert((is_zfs(menu_root)) ^ (pool == NULL));
606 	if (pool) {
607 		(void) umount_top_dataset(pool, zmnted, zmntpt);
608 		free(special);
609 	}
610 
611 	menu_free(&menu);
612 	return (ret);
613 }
614 
615 /*
616  * To suppress output from ficl. We do not want to see messages
617  * from interpreting loader config.
618  */
619 
620 /*ARGSUSED*/
621 static void
ficlTextOutSilent(ficlCallback * cb,char * text)622 ficlTextOutSilent(ficlCallback *cb, char *text)
623 {
624 }
625 
626 /*ARGSUSED*/
627 static error_t
set_option(struct menu_lst * menu,char * dummy,char * opt)628 set_option(struct menu_lst *menu, char *dummy, char *opt)
629 {
630 	char path[PATH_MAX];
631 	char *val;
632 	char *rest;
633 	int optval;
634 	menu_entry_t *entry;
635 	nvlist_t *be_attrs;
636 	FILE *fp;
637 	int rv, ret = BAM_SUCCESS;
638 
639 	assert(menu);
640 	assert(opt);
641 	assert(dummy == NULL);
642 
643 	val = strchr(opt, '=');
644 	if (val != NULL) {
645 		*val++ = '\0';
646 	} else {
647 		bam_error(_("missing value in key=value\n"));
648 		return (BAM_ERROR);
649 	}
650 
651 	if (strcmp(opt, "default") == 0) {
652 		errno = 0;
653 		optval = strtol(val, &rest, 10);
654 		if (errno != 0 || *rest != '\0') {
655 			bam_error(_("invalid boot entry number: %s\n"), val);
656 			return (BAM_ERROR);
657 		}
658 		STAILQ_FOREACH(entry, menu, me_next) {
659 			if (entry->me_idx == optval)
660 				break;
661 		}
662 		if (entry == NULL) {
663 			bam_error(_("invalid boot entry number: %s\n"), val);
664 			return (BAM_ERROR);
665 		}
666 		if (nvlist_alloc(&be_attrs, NV_UNIQUE_NAME, 0) != 0) {
667 			bam_error(_("out of memory\n"));
668 			return (BAM_ERROR);
669 		}
670 		if (nvlist_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME,
671 		    entry->me_title) != 0) {
672 			bam_error(_("out of memory\n"));
673 			nvlist_free(be_attrs);
674 			return (BAM_ERROR);
675 		}
676 		ret = be_activate(be_attrs);
677 		nvlist_free(be_attrs);
678 		if (ret != 0)
679 			ret = BAM_ERROR;
680 		return (ret);
681 	} else if (strcmp(opt, "timeout") == 0) {
682 		errno = 0;
683 		optval = strtol(val, &rest, 10);
684 		if (errno != 0 || *rest != '\0') {
685 			bam_error(_("invalid timeout: %s\n"), val);
686 			return (BAM_ERROR);
687 		}
688 
689 		(void) snprintf(path, PATH_MAX, "%s" CONF_DIR "/timeout",
690 		    bam_root);
691 
692 		fp = fopen(path, "w");
693 		if (fp == NULL) {
694 			bam_error(_("failed to open file: %s: %s\n"),
695 			    path, strerror(errno));
696 			return (BAM_ERROR);
697 		}
698 		/*
699 		 * timeout=-1 is to disable auto boot in illumos, but
700 		 * loader needs "NO" to disable auto boot.
701 		 */
702 		if (optval == -1)
703 			rv = fprintf(fp, "autoboot_delay=\"NO\"\n");
704 		else
705 			rv = fprintf(fp, "autoboot_delay=\"%d\"\n", optval);
706 
707 		if (rv < 0) {
708 			bam_error(_("write to file failed: %s: %s\n"),
709 			    path, strerror(errno));
710 			(void) fclose(fp);
711 			ret = BAM_ERROR;
712 		} else
713 			rv = fclose(fp);
714 
715 		if (rv < 0) {
716 			bam_error(_("failed to close file: %s: %s\n"),
717 			    path, strerror(errno));
718 			ret = BAM_ERROR;
719 		}
720 		if (ret == BAM_ERROR)
721 			(void) unlink(path);
722 
723 		return (BAM_SUCCESS);
724 	}
725 
726 	bam_error(_("invalid option: %s\n"), opt);
727 	return (BAM_ERROR);
728 }
729 
730 static int
bam_mount_be(menu_entry_t * entry,char ** dir)731 bam_mount_be(menu_entry_t *entry, char **dir)
732 {
733 	nvlist_t *be_attrs = NULL;
734 	const char *tmpdir = getenv("TMPDIR");
735 	const char *tmpname = "bam.XXXXXX";
736 	be_node_list_t *be_node, *be_nodes = NULL;
737 	int ret;
738 
739 	*dir = NULL;
740 	if (tmpdir == NULL)
741 		tmpdir = "/tmp";
742 
743 	ret = asprintf(dir, "%s/%s", tmpdir, tmpname);
744 	if (ret < 0) {
745 		return (BE_ERR_NOMEM);
746 	}
747 	*dir = mkdtemp(*dir);
748 
749 	if (nvlist_alloc(&be_attrs, NV_UNIQUE_NAME, 0) != 0) {
750 		ret = BE_ERR_NOMEM;
751 		goto out;
752 	}
753 
754 	ret = be_list(NULL, &be_nodes, BE_LIST_DEFAULT);
755 	if (ret != BE_SUCCESS) {
756 		goto out;
757 	}
758 
759 	for (be_node = be_nodes; be_node;
760 	    be_node = be_node->be_next_node)
761 		if (strcmp(be_node->be_root_ds, entry->me_bootfs) == 0)
762 			break;
763 
764 	if (nvlist_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME,
765 	    be_node->be_node_name) != 0) {
766 		ret = BE_ERR_NOMEM;
767 		goto out;
768 	}
769 
770 	if (nvlist_add_string(be_attrs, BE_ATTR_MOUNTPOINT, *dir) != 0) {
771 		ret = BE_ERR_NOMEM;
772 		goto out;
773 	}
774 
775 	ret = be_mount(be_attrs);
776 	if (ret == BE_ERR_MOUNTED) {
777 		/*
778 		 * if BE is mounted, dir does not point to correct directory
779 		 */
780 		(void) rmdir(*dir);
781 		free(*dir);
782 		*dir = NULL;
783 	}
784 out:
785 	if (be_nodes != NULL)
786 		be_free_list(be_nodes);
787 	nvlist_free(be_attrs);
788 	return (ret);
789 }
790 
791 static int
bam_umount_be(char * dir)792 bam_umount_be(char *dir)
793 {
794 	nvlist_t *be_attrs;
795 	int ret;
796 
797 	if (dir == NULL)		/* nothing to do */
798 		return (BE_SUCCESS);
799 
800 	if (nvlist_alloc(&be_attrs, NV_UNIQUE_NAME, 0) != 0)
801 		return (BE_ERR_NOMEM);
802 
803 	if (nvlist_add_string(be_attrs, BE_ATTR_ORIG_BE_NAME, dir) != 0) {
804 		ret = BE_ERR_NOMEM;
805 		goto out;
806 	}
807 
808 	ret = be_unmount(be_attrs);
809 out:
810 	nvlist_free(be_attrs);
811 	return (ret);
812 }
813 
814 /*
815  * display details of menu entry or single property
816  */
817 static error_t
list_menu_entry(menu_entry_t * entry,char * setting)818 list_menu_entry(menu_entry_t *entry, char *setting)
819 {
820 	int ret = BAM_SUCCESS;
821 	char *ptr, *dir;
822 	char buf[MAX_INPUT];
823 	ficlVm *vm;
824 	int mounted;
825 
826 	ptr = strrchr(entry->me_bootfs, ':');
827 	if (strcmp(entry->me_type, "bootfs") != 0 ||
828 	    (ptr != NULL && ptr[1] == '\0')) {
829 		(void) printf("\nTitle:       %s\n", entry->me_title);
830 		(void) printf("Type:        %s\n", entry->me_type);
831 		(void) printf("Device:      %s\n", entry->me_bootfs);
832 		return (ret);
833 	}
834 
835 	mounted = bam_mount_be(entry, &dir);
836 	if (mounted != BE_SUCCESS && mounted != BE_ERR_MOUNTED) {
837 		if (dir != NULL) {
838 			(void) rmdir(dir);
839 			free(dir);
840 		}
841 		bam_error(_("%s is not mounted\n"), entry->me_title);
842 		return (BAM_ERROR);
843 	}
844 
845 	vm = bf_init("", ficlTextOutSilent);
846 	if (vm == NULL) {
847 		bam_error(_("error setting up forth interpreter\n"));
848 		ret = BAM_ERROR;
849 		goto done;
850 	}
851 
852 	/* should only get FICL_VM_STATUS_OUT_OF_TEXT */
853 	(void) snprintf(buf, MAX_INPUT, "set currdev=zfs:%s:",
854 	    entry->me_bootfs);
855 	ret = ficlVmEvaluate(vm, buf);
856 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
857 		bam_error(_("error interpreting boot config\n"));
858 		ret = BAM_ERROR;
859 		goto done;
860 	}
861 	(void) snprintf(buf, MAX_INPUT, "include /boot/forth/loader.4th");
862 	ret = ficlVmEvaluate(vm, buf);
863 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
864 		bam_error(_("error interpreting boot config\n"));
865 		ret = BAM_ERROR;
866 		goto done;
867 	}
868 	(void) snprintf(buf, MAX_INPUT, "start");
869 	ret = ficlVmEvaluate(vm, buf);
870 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
871 		bam_error(_("error interpreting boot config\n"));
872 		ret = BAM_ERROR;
873 		goto done;
874 	}
875 	(void) snprintf(buf, MAX_INPUT, "boot");
876 	ret = ficlVmEvaluate(vm, buf);
877 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
878 		bam_error(_("error interpreting boot config\n"));
879 		ret = BAM_ERROR;
880 		goto done;
881 	}
882 
883 	ret = BAM_SUCCESS;
884 	if (*setting == '\0')
885 		(void) printf("\nTitle:       %s\n", entry->me_title);
886 	else if (strcasecmp(setting, "title") == 0) {
887 		(void) printf("%s\n", entry->me_title);
888 		goto done;
889 	}
890 
891 	ptr = getenv("autoboot_delay");
892 	if (ptr != NULL) {
893 		char *timeout = "-1";
894 
895 		if (strcasecmp(ptr, "NO") != 0)
896 			timeout = ptr;
897 
898 		if (*setting == '\0')
899 			(void) printf("Timeout:     %s\n", timeout);
900 		else if (strcasecmp(setting, "timeout") == 0) {
901 			(void) printf("%s\n", timeout);
902 			goto done;
903 		}
904 
905 	}
906 	ptr = getenv("console");
907 	if (ptr != NULL) {
908 		if (*setting == '\0')
909 			(void) printf("Console:     %s\n", ptr);
910 		else if (strcasecmp(setting, "console") == 0) {
911 			(void) printf("%s\n", ptr);
912 			goto done;
913 		}
914 	}
915 
916 	if (*setting == '\0')
917 		(void) printf("Bootfs:      %s\n", entry->me_bootfs);
918 	else if (strcasecmp(setting, "bootfs") == 0) {
919 		(void) printf("%s\n", entry->me_bootfs);
920 		goto done;
921 	}
922 
923 	ptr = getenv("xen_kernel");
924 	if (ptr != NULL) {
925 			if (*setting == '\0') {
926 				(void) printf("Xen kernel:  %s\n", ptr);
927 			} else if (strcasecmp(setting, "xen_kernel") == 0) {
928 				(void) printf("%s\n", ptr);
929 				goto done;
930 			}
931 
932 			if (*setting == '\0') {
933 				(void) printf("Xen args:    \"%s\"\n",
934 				    getenv("xen_cmdline"));
935 			} else if (strcasecmp(setting, "xen_cmdline") == 0) {
936 				(void) printf("%s\n", getenv("xen_cmdline"));
937 				goto done;
938 			}
939 
940 			if (*setting == '\0') {
941 				(void) printf("Kernel:      %s\n",
942 				    getenv("bootfile"));
943 			} else if (strcasecmp(setting, "kernel") == 0) {
944 				(void) printf("%s\n", getenv("bootfile"));
945 				goto done;
946 			}
947 	} else {
948 		ptr = getenv("kernelname");
949 		if (ptr != NULL) {
950 			if (*setting == '\0') {
951 				(void) printf("Kernel:      %s\n", ptr);
952 			} else if (strcasecmp(setting, "kernel") == 0) {
953 				(void) printf("%s\n", ptr);
954 				goto done;
955 			}
956 		}
957 	}
958 
959 	ptr = getenv("boot-args");
960 	if (ptr != NULL) {
961 		if (*setting == '\0') {
962 			(void) printf("Boot-args:   \"%s\"\n", ptr);
963 		} else if (strcasecmp(setting, "boot-args") == 0) {
964 			(void) printf("%s\n", ptr);
965 			goto done;
966 		}
967 	}
968 
969 	if (*setting == '\0' || strcasecmp(setting, "modules") == 0) {
970 		(void) printf("\nModules:\n");
971 		ficlVmSetTextOut(vm, ficlCallbackDefaultTextOut);
972 		(void) snprintf(buf, MAX_INPUT, "show-module-options");
973 		ret = ficlVmEvaluate(vm, buf);
974 		if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
975 			bam_error(_("error interpreting boot config\n"));
976 			ret = BAM_ERROR;
977 			goto done;
978 		}
979 		ret = BAM_SUCCESS;
980 		goto done;
981 	}
982 
983 	/* if we got here with setting string, its unknown property */
984 	if (*setting != '\0') {
985 		bam_error(_("unknown property: %s\n"), setting);
986 		ret = BAM_ERROR;
987 	} else
988 		ret = BAM_SUCCESS;
989 done:
990 	bf_fini();
991 	if (mounted != BE_ERR_MOUNTED) {
992 		(void) bam_umount_be(dir);
993 	}
994 
995 	if (dir != NULL) {
996 		(void) rmdir(dir);
997 		free(dir);
998 	}
999 
1000 	return (ret);
1001 }
1002 
1003 /*ARGSUSED*/
1004 static error_t
list_entry(struct menu_lst * menu,char * menu_root,char * opt)1005 list_entry(struct menu_lst *menu, char *menu_root, char *opt)
1006 {
1007 	error_t ret = BAM_SUCCESS;
1008 	menu_entry_t *entry;
1009 	char *ptr, *title = NULL;
1010 	int i, e = -1;
1011 
1012 	if (opt == NULL) {
1013 		print_nodes(B_FALSE, menu);
1014 		return (ret);
1015 	}
1016 
1017 	if ((ptr = strchr(opt, '=')) == NULL) {
1018 		bam_error(_("invalid option: %s\n"), opt);
1019 		return (BAM_ERROR);
1020 	}
1021 
1022 	i = ptr - opt;
1023 	if (strncmp(opt, "entry", i) == 0) {
1024 		e = atoi(ptr+1);
1025 	} else if (strncmp(opt, "title", i) == 0) {
1026 		title = ptr+1;
1027 	} else {
1028 		bam_error(_("invalid option: %s\n"), opt);
1029 		return (BAM_ERROR);
1030 	}
1031 
1032 	STAILQ_FOREACH(entry, menu, me_next) {
1033 		if (title != NULL) {
1034 			if (strcmp(title, entry->me_title) == 0)
1035 				break;
1036 		} else if (entry->me_idx == e)
1037 			break;
1038 	}
1039 
1040 	if (entry == NULL) {
1041 		bam_error(_("no matching entry found\n"));
1042 		return (BAM_ERROR);
1043 	}
1044 
1045 	return (list_menu_entry(entry, ""));
1046 }
1047 
1048 /*
1049  * For now this is just stub entry to support grub interface, the
1050  * known consumer is installer ict.py code, calling as:
1051  * bootadm update-menu -R /a -Z -o rdisk
1052  * Later this can be converted to do something useful.
1053  */
1054 /*ARGSUSED*/
1055 static error_t
update_entry(struct menu_lst * menu,char * menu_root,char * osdev)1056 update_entry(struct menu_lst *menu, char *menu_root, char *osdev)
1057 {
1058 	char path[PATH_MAX];
1059 	char *pool = menu_root + 1;
1060 	be_node_list_t *be_nodes, *be_node;
1061 	int rv;
1062 	FILE *fp;
1063 
1064 	(void) snprintf(path, PATH_MAX, "%s%s", menu_root, MENU);
1065 	rv = be_list(NULL, &be_nodes, BE_LIST_DEFAULT);
1066 
1067 	if (rv != BE_SUCCESS)
1068 		return (BAM_ERROR);
1069 
1070 	fp = fopen(path, "w");
1071 	if (fp == NULL) {
1072 		be_free_list(be_nodes);
1073 		return (BAM_ERROR);
1074 	}
1075 
1076 	for (be_node = be_nodes; be_node; be_node = be_node->be_next_node) {
1077 		if (strcmp(be_node->be_rpool, pool) == 0) {
1078 			(void) fprintf(fp, "title %s\n", be_node->be_node_name);
1079 			(void) fprintf(fp, "bootfs %s\n", be_node->be_root_ds);
1080 		}
1081 	}
1082 
1083 	be_free_list(be_nodes);
1084 	(void) fclose(fp);
1085 	return (BAM_SUCCESS);
1086 }
1087 
1088 /*ARGSUSED*/
1089 static error_t
update_temp(struct menu_lst * menu,char * dummy,char * opt)1090 update_temp(struct menu_lst *menu, char *dummy, char *opt)
1091 {
1092 	error_t ret = BAM_ERROR;
1093 	char path[PATH_MAX];
1094 	char buf[MAX_INPUT];
1095 	struct mnttab mpref = { 0 };
1096 	struct mnttab mp = { 0 };
1097 	ficlVm *vm;
1098 	char *env, *o;
1099 	FILE *fp;
1100 
1101 	(void) snprintf(path, PATH_MAX, "%s" TRANSIENT, bam_root);
1102 	/*
1103 	 * if opt == NULL, remove transient config
1104 	 */
1105 	if (opt == NULL) {
1106 		(void) unlink(path);
1107 		return (BAM_SUCCESS);
1108 	}
1109 
1110 	fp = fopen(MNTTAB, "r");
1111 	if (fp == NULL)
1112 		return (BAM_ERROR);
1113 
1114 	mpref.mnt_mountp = "/";
1115 	if (getmntany(fp, &mp, &mpref) != 0) {
1116 		(void) fclose(fp);
1117 		return (BAM_ERROR);
1118 	}
1119 	(void) fclose(fp);
1120 
1121 	vm = bf_init("", ficlTextOutSilent);
1122 	if (vm == NULL) {
1123 		bam_error(_("Error setting up forth interpreter\n"));
1124 		return (ret);
1125 	}
1126 
1127 	/*
1128 	 * need to check current boot config, so fire up the ficl
1129 	 * if its xen setup, we add option to boot-args list, not replacing it.
1130 	 */
1131 	(void) snprintf(buf, MAX_INPUT, "set currdev=zfs:%s:", mp.mnt_special);
1132 	ret = ficlVmEvaluate(vm, buf);
1133 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1134 		bam_error(_("Error interpreting boot config\n"));
1135 		bf_fini();
1136 		return (BAM_ERROR);
1137 	}
1138 	(void) snprintf(buf, MAX_INPUT, "include /boot/forth/loader.4th");
1139 	ret = ficlVmEvaluate(vm, buf);
1140 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1141 		bam_error(_("Error interpreting boot config\n"));
1142 		bf_fini();
1143 		return (BAM_ERROR);
1144 	}
1145 	(void) snprintf(buf, MAX_INPUT, "start");
1146 	ret = ficlVmEvaluate(vm, buf);
1147 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1148 		bam_error(_("Error interpreting boot config\n"));
1149 		bf_fini();
1150 		return (BAM_ERROR);
1151 	}
1152 	(void) snprintf(buf, MAX_INPUT, "boot");
1153 	ret = ficlVmEvaluate(vm, buf);
1154 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1155 		bam_error(_("Error interpreting boot config\n"));
1156 		bf_fini();
1157 		return (BAM_ERROR);
1158 	}
1159 	bf_fini();
1160 
1161 	if (opt[0] == '-') {
1162 		env = getenv("xen_kernel");
1163 		fp = fopen(path, "w");
1164 		if (fp == NULL)
1165 			return (BAM_ERROR);
1166 
1167 		if (env != NULL) {
1168 			env = getenv("boot-args");
1169 			(void) fprintf(fp, "boot-args='%s %s'\n", env, opt);
1170 		} else
1171 			(void) fprintf(fp, "boot-args='%s'\n", opt);
1172 		(void) fclose(fp);
1173 		return (BAM_SUCCESS);
1174 	}
1175 
1176 	/*
1177 	 * it should be the case with "kernel args"
1178 	 * so, we split the opt at first space
1179 	 * and store bootfile= and boot-args=
1180 	 */
1181 	env = getenv("xen_kernel");
1182 
1183 	o = strchr(opt, ' ');
1184 	if (o == NULL) {
1185 		fp = fopen(path, "w");
1186 		if (fp == NULL)
1187 			return (BAM_ERROR);
1188 		(void) fprintf(fp, "bootfile='%s;unix'\n", opt);
1189 		(void) fclose(fp);
1190 		return (BAM_SUCCESS);
1191 	}
1192 	*o++ = '\0';
1193 	fp = fopen(path, "w");
1194 	if (fp == NULL)
1195 		return (BAM_ERROR);
1196 	(void) fprintf(fp, "bootfile='%s;unix'\n", opt);
1197 
1198 	if (env != NULL) {
1199 		env = getenv("boot-args");
1200 		(void) fprintf(fp, "boot-args='%s %s'\n", env, o);
1201 	} else
1202 		(void) fprintf(fp, "boot-args='%s'\n", o);
1203 
1204 	(void) fflush(fp);
1205 	(void) fclose(fp);
1206 	return (ret);
1207 }
1208 
1209 static error_t
list_setting(struct menu_lst * menu,char * which,char * setting)1210 list_setting(struct menu_lst *menu, char *which, char *setting)
1211 {
1212 	int entry = -1;
1213 	menu_entry_t *m;
1214 	be_node_list_t *be_nodes, *be_node = NULL;
1215 	int ret;
1216 
1217 	assert(which);
1218 	assert(setting);
1219 
1220 	/*
1221 	 * which can be:
1222 	 * "" - list default entry
1223 	 * number - use for entry number
1224 	 * property name
1225 	 */
1226 	if (*which != '\0') {
1227 		if (isdigit(*which)) {
1228 			char *rest;
1229 			errno = 0;
1230 			entry = strtol(which, &rest, 10);
1231 			if (errno != 0 || *rest != '\0') {
1232 				bam_error(_("invalid boot entry number: %s\n"),
1233 				    which);
1234 				return (BAM_ERROR);
1235 			}
1236 		} else
1237 			setting = which;
1238 	}
1239 
1240 	/* find default entry */
1241 	if (entry == -1) {
1242 		ret = be_list(NULL, &be_nodes, BE_LIST_DEFAULT);
1243 		if (ret != BE_SUCCESS) {
1244 			bam_error(_("No BE's found\n"));
1245 			return (BAM_ERROR);
1246 		}
1247 		STAILQ_FOREACH(m, menu, me_next) {
1248 			entry++;
1249 			for (be_node = be_nodes; be_node;
1250 			    be_node = be_node->be_next_node) {
1251 				if (strcmp(be_node->be_root_ds,
1252 				    m->me_bootfs) == 0)
1253 					break;
1254 			}
1255 			if (be_node != NULL &&
1256 			    be_node->be_active_on_boot == B_TRUE)
1257 				break; /* found active node */
1258 		}
1259 		be_free_list(be_nodes);
1260 		if (be_node == NULL) {
1261 			bam_error(_("None of BE nodes is marked active\n"));
1262 			return (BAM_ERROR);
1263 		}
1264 	} else {
1265 		STAILQ_FOREACH(m, menu, me_next)
1266 			if (m->me_idx == entry)
1267 				break;
1268 
1269 		if (m == NULL) {
1270 			bam_error(_("no matching entry found\n"));
1271 			return (BAM_ERROR);
1272 		}
1273 	}
1274 
1275 	return (list_menu_entry(m, setting));
1276 }
1277 
1278 /*ARGSUSED*/
1279 static error_t
disable_hyper(struct menu_lst * menu,char * osroot,char * opt)1280 disable_hyper(struct menu_lst *menu, char *osroot, char *opt)
1281 {
1282 	char path[PATH_MAX];
1283 
1284 	(void) snprintf(path, PATH_MAX, "%s" XEN_CONFIG, bam_root);
1285 	(void) unlink(path);
1286 	return (BAM_SUCCESS);
1287 }
1288 
1289 /*ARGSUSED*/
1290 static error_t
enable_hyper(struct menu_lst * menu,char * osroot,char * opt)1291 enable_hyper(struct menu_lst *menu, char *osroot, char *opt)
1292 {
1293 	ficlVm *vm;
1294 	char path[PATH_MAX];
1295 	char buf[MAX_INPUT];
1296 	char *env;
1297 	FILE *fp;
1298 	struct mnttab mpref = { 0 };
1299 	struct mnttab mp = { 0 };
1300 	int ret;
1301 
1302 	fp = fopen(MNTTAB, "r");
1303 	if (fp == NULL)
1304 		return (BAM_ERROR);
1305 
1306 	mpref.mnt_mountp = "/";
1307 	if (getmntany(fp, &mp, &mpref) != 0) {
1308 		(void) fclose(fp);
1309 		return (BAM_ERROR);
1310 	}
1311 	(void) fclose(fp);
1312 
1313 	vm = bf_init("", ficlTextOutSilent);
1314 	if (vm == NULL) {
1315 		bam_error(_("Error setting up forth interpreter\n"));
1316 		return (BAM_ERROR);
1317 	}
1318 
1319 	/*
1320 	 * need to check current boot config, so fire up the ficl
1321 	 * if its xen setup, we add option to boot-args list, not replacing it.
1322 	 */
1323 	(void) snprintf(buf, MAX_INPUT, "set currdev=zfs:%s:", mp.mnt_special);
1324 	ret = ficlVmEvaluate(vm, buf);
1325 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1326 		bam_error(_("Error interpreting boot config\n"));
1327 		bf_fini();
1328 		return (BAM_ERROR);
1329 	}
1330 	(void) snprintf(buf, MAX_INPUT, "include /boot/forth/loader.4th");
1331 	ret = ficlVmEvaluate(vm, buf);
1332 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1333 		bam_error(_("Error interpreting boot config\n"));
1334 		bf_fini();
1335 		return (BAM_ERROR);
1336 	}
1337 	(void) snprintf(buf, MAX_INPUT, "start");
1338 	ret = ficlVmEvaluate(vm, buf);
1339 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1340 		bam_error(_("Error interpreting boot config\n"));
1341 		bf_fini();
1342 		return (BAM_ERROR);
1343 	}
1344 	(void) snprintf(buf, MAX_INPUT, "boot");
1345 	ret = ficlVmEvaluate(vm, buf);
1346 	if (ret != FICL_VM_STATUS_OUT_OF_TEXT) {
1347 		bam_error(_("Error interpreting boot config\n"));
1348 		bf_fini();
1349 		return (BAM_ERROR);
1350 	}
1351 	bf_fini();
1352 
1353 	(void) mkdir(CONF_DIR, 0755);
1354 	(void) snprintf(path, PATH_MAX, "%s" XEN_CONFIG, bam_root);
1355 	fp = fopen(path, "w");
1356 	if (fp == NULL) {
1357 		return (BAM_ERROR);	/* error, cant write config */
1358 	}
1359 
1360 	errno = 0;
1361 	/*
1362 	 * on write error, remove file to ensure we have bootable config.
1363 	 * note we dont mind if config exists, it will get updated
1364 	 */
1365 	(void) fprintf(fp, "xen_kernel=\"/boot/${ISADIR}/xen\"\n");
1366 	if (errno != 0)
1367 		goto error;
1368 
1369 	/*
1370 	 * really simple and stupid console conversion.
1371 	 * it really has to be gone, it belongs to milestone/xvm properties.
1372 	 */
1373 	env = getenv("console");
1374 	if (env != NULL) {
1375 		if (strcmp(env, "ttya") == 0)
1376 			(void) fprintf(fp, "xen_cmdline=\"console=com1 %s\"\n",
1377 			    opt);
1378 		else if (strcmp(env, "ttyb") == 0)
1379 			(void) fprintf(fp, "xen_cmdline=\"console=com2 %s\"\n",
1380 			    opt);
1381 		else
1382 			(void) fprintf(fp, "xen_cmdline=\"console=vga %s\"\n",
1383 			    opt);
1384 	} else
1385 		(void) fprintf(fp, "xen_cmdline=\"%s\"\n", opt);
1386 	if (errno != 0)
1387 		goto error;
1388 
1389 	(void) fprintf(fp,
1390 	    "bootfile=\"/platform/i86xpv/kernel/${ISADIR}/unix\"\n");
1391 	if (errno != 0)
1392 		goto error;
1393 
1394 	(void) fprintf(fp,
1395 	    "boot-args=\"/platform/i86xpv/kernel/${ISADIR}/unix\"\n");
1396 	if (errno != 0)
1397 		goto error;
1398 
1399 	(void) fclose(fp);
1400 	if (errno != 0) {
1401 		(void) unlink(path);
1402 		return (BAM_ERROR);
1403 	}
1404 	return (BAM_SUCCESS);
1405 error:
1406 	(void) fclose(fp);
1407 	(void) unlink(path);
1408 	return (BAM_ERROR);
1409 }
1410