xref: /netbsd-src/usr.sbin/sysinst/util.c (revision e5014a45d857e6639905eec7f40943a207fed007)
1 /*	$NetBSD: util.c,v 1.74 2023/11/20 18:03:55 martin Exp $	*/
2 
3 /*
4  * Copyright 1997 Piermont Information Systems Inc.
5  * All rights reserved.
6  *
7  * Written by Philip A. Nelson for Piermont Information Systems Inc.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. The name of Piermont Information Systems Inc. may not be used to endorse
18  *    or promote products derived from this software without specific prior
19  *    written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31  * THE POSSIBILITY OF SUCH DAMAGE.
32  *
33  */
34 
35 /* util.c -- routines that don't really fit anywhere else... */
36 
37 #include <assert.h>
38 #include <inttypes.h>
39 #include <stdio.h>
40 #include <stdarg.h>
41 #include <string.h>
42 #include <unistd.h>
43 #include <sys/mount.h>
44 #include <sys/dkio.h>
45 #include <sys/ioctl.h>
46 #include <sys/types.h>
47 #include <sys/param.h>
48 #include <sys/sysctl.h>
49 #include <sys/stat.h>
50 #include <sys/statvfs.h>
51 #include <isofs/cd9660/iso.h>
52 #include <curses.h>
53 #include <err.h>
54 #include <errno.h>
55 #include <dirent.h>
56 #include <util.h>
57 #include "defs.h"
58 #include "md.h"
59 #include "defsizes.h"
60 #include "msg_defs.h"
61 #include "menu_defs.h"
62 #ifdef MD_MAY_SWAP_TO
63 #include <sys/drvctlio.h>
64 #endif
65 #ifdef CHECK_ENTROPY
66 #include <sha2.h>
67 #include <paths.h>
68 #endif
69 
70 #define MAX_CD_DEVS	256	/* how many cd drives do we expect to attach */
71 #define ISO_BLKSIZE	ISO_DEFAULT_BLOCK_SIZE
72 
73 static const char *msg_yes, *msg_no, *msg_all, *msg_some, *msg_none;
74 static int select_menu_width;
75 
76 static uint8_t set_status[SET_GROUP_END];
77 #define SET_VALID	0x01
78 #define SET_SELECTED	0x02
79 #define SET_SKIPPED	0x04
80 #define SET_INSTALLED	0x08
81 #define	SET_NO_EXTRACT	0x10
82 
83 struct  tarstats {
84 	int nselected;
85 	int nfound;
86 	int nnotfound;
87 	int nerror;
88 	int nsuccess;
89 	int nskipped;
90 } tarstats;
91 
92 distinfo dist_list[] = {
93 #ifdef SET_KERNEL_1_NAME
94 	{SET_KERNEL_1_NAME,	SET_KERNEL_1,		false, MSG_set_kernel_1, NULL},
95 #endif
96 #ifdef SET_KERNEL_2_NAME
97 	{SET_KERNEL_2_NAME,	SET_KERNEL_2,		false, MSG_set_kernel_2, NULL},
98 #endif
99 #ifdef SET_KERNEL_3_NAME
100 	{SET_KERNEL_3_NAME,	SET_KERNEL_3,		false, MSG_set_kernel_3, NULL},
101 #endif
102 #ifdef SET_KERNEL_4_NAME
103 	{SET_KERNEL_4_NAME,	SET_KERNEL_4,		false, MSG_set_kernel_4, NULL},
104 #endif
105 #ifdef SET_KERNEL_5_NAME
106 	{SET_KERNEL_5_NAME,	SET_KERNEL_5,		false, MSG_set_kernel_5, NULL},
107 #endif
108 #ifdef SET_KERNEL_6_NAME
109 	{SET_KERNEL_6_NAME,	SET_KERNEL_6,		false, MSG_set_kernel_6, NULL},
110 #endif
111 #ifdef SET_KERNEL_7_NAME
112 	{SET_KERNEL_7_NAME,	SET_KERNEL_7,		false, MSG_set_kernel_7, NULL},
113 #endif
114 #ifdef SET_KERNEL_8_NAME
115 	{SET_KERNEL_8_NAME,	SET_KERNEL_8,		false, MSG_set_kernel_8, NULL},
116 #endif
117 #ifdef SET_KERNEL_9_NAME
118 	{SET_KERNEL_9_NAME,	SET_KERNEL_9,		false, MSG_set_kernel_9, NULL},
119 #endif
120 
121 #ifdef HAVE_MODULES
122 	{"modules",		SET_MODULES,		false, MSG_set_modules, NULL},
123 #endif
124 	{"base",		SET_BASE,		false, MSG_set_base, NULL},
125 #ifdef HAVE_DTB
126 	{"dtb",			SET_DTB,		false, MSG_set_dtb, NULL},
127 #endif
128 	{"etc",			SET_ETC,		false, MSG_set_system, NULL},
129 	{"comp",		SET_COMPILER,		false, MSG_set_compiler, NULL},
130 	{"games",		SET_GAMES,		false, MSG_set_games, NULL},
131 	{"gpufw",		SET_GPUFW,		false, MSG_set_gpufw, NULL},
132 	{"man",			SET_MAN_PAGES,		false, MSG_set_man_pages, NULL},
133 	{"misc",		SET_MISC,		false, MSG_set_misc, NULL},
134 	{"rescue",		SET_RESCUE,		false, MSG_set_rescue, NULL},
135 	{"tests",		SET_TESTS,		false, MSG_set_tests, NULL},
136 	{"text",		SET_TEXT_TOOLS,		false, MSG_set_text_tools, NULL},
137 
138 	{NULL,			SET_GROUP,		false, MSG_set_X11, NULL},
139 	{"xbase",		SET_X11_BASE,		false, MSG_set_X11_base, NULL},
140 	{"xcomp",		SET_X11_PROG,		false, MSG_set_X11_prog, NULL},
141 	{"xetc",		SET_X11_ETC,		false, MSG_set_X11_etc, NULL},
142 	{"xfont",		SET_X11_FONTS,		false, MSG_set_X11_fonts, NULL},
143 	{"xserver",		SET_X11_SERVERS,	false, MSG_set_X11_servers, NULL},
144 	{NULL,			SET_GROUP_END,		false, NULL, NULL},
145 
146 #ifdef SET_MD_1_NAME
147 	{SET_MD_1_NAME,		SET_MD_1,		false, MSG_set_md_1, NULL},
148 #endif
149 #ifdef SET_MD_2_NAME
150 	{SET_MD_2_NAME,		SET_MD_2,		false, MSG_set_md_2, NULL},
151 #endif
152 #ifdef SET_MD_3_NAME
153 	{SET_MD_3_NAME,		SET_MD_3,		false, MSG_set_md_3, NULL},
154 #endif
155 #ifdef SET_MD_4_NAME
156 	{SET_MD_4_NAME,		SET_MD_4,		false, MSG_set_md_4, NULL},
157 #endif
158 
159 	{NULL,			SET_GROUP,		true, MSG_set_source, NULL},
160 	{"syssrc",		SET_SYSSRC,		true, MSG_set_syssrc, NULL},
161 	{"src",			SET_SRC,		true, MSG_set_src, NULL},
162 	{"sharesrc",		SET_SHARESRC,		true, MSG_set_sharesrc, NULL},
163 	{"gnusrc",		SET_GNUSRC,		true, MSG_set_gnusrc, NULL},
164 	{"xsrc",		SET_XSRC,		true, MSG_set_xsrc, NULL},
165 	{"debug",		SET_DEBUG,		false, MSG_set_debug, NULL},
166 	{"xdebug",		SET_X11_DEBUG,		false, MSG_set_xdebug, NULL},
167 	{NULL,			SET_GROUP_END,		false, NULL, NULL},
168 
169 	{NULL,			SET_LAST,		false, NULL, NULL},
170 };
171 
172 #define MAX_CD_INFOS	16	/* how many media can be found? */
173 struct cd_info {
174 	char device_name[16];
175 	char menu[100];
176 };
177 static struct cd_info cds[MAX_CD_INFOS];
178 
179 /* flags whether to offer the respective options (depending on helper
180    programs available on install media */
181 int have_raid, have_vnd, have_cgd, have_lvm, have_gpt, have_dk;
182 
183 /*
184  * local prototypes
185  */
186 
187 static int check_for(unsigned int mode, const char *pathname);
188 static int get_iso9660_volname(int dev, int sess, char *volname,
189 		size_t volnamelen);
190 static int get_available_cds(void);
191 static int binary_available(const char *prog);
192 
193 void
194 init_set_status(int flags)
195 {
196 	static const uint8_t sets_valid[] = {MD_SETS_VALID};
197 	static const uint8_t sets_selected_full[] = {MD_SETS_SELECTED};
198 	static const uint8_t sets_selected_minimal[] = {MD_SETS_SELECTED_MINIMAL};
199 	static const uint8_t sets_selected_nox[] = {MD_SETS_SELECTED_NOX};
200 	static const uint8_t *sets_selected;
201 	unsigned int nelem_selected;
202 	unsigned int i, len;
203 	const char *longest;
204 
205 	if (flags & SFLAG_MINIMAL) {
206 		sets_selected = sets_selected_minimal;
207 		nelem_selected = __arraycount(sets_selected_minimal);
208 	} else if (flags & SFLAG_NOX) {
209 		sets_selected = sets_selected_nox;
210 		nelem_selected = __arraycount(sets_selected_nox);
211 	} else {
212 		sets_selected = sets_selected_full;
213 		nelem_selected = __arraycount(sets_selected_full);
214 	}
215 
216 	for (i = 0; i < __arraycount(sets_valid); i++)
217 		set_status[sets_valid[i]] = SET_VALID;
218 	for (i = 0; i < nelem_selected; i++)
219 		set_status[sets_selected[i]] |= SET_SELECTED;
220 
221 	set_status[SET_GROUP] = SET_VALID;
222 
223 	/* Lookup some strings we need lots of times */
224 	msg_yes = msg_string(MSG_Yes);
225 	msg_no = msg_string(MSG_No);
226 	msg_all = msg_string(MSG_All);
227 	msg_some = msg_string(MSG_Some);
228 	msg_none = msg_string(MSG_None);
229 
230 	/* Find longest and use it to determine width of selection menu */
231 	len = strlen(msg_no); longest = msg_no;
232 	i = strlen(msg_yes); if (i > len) {len = i; longest = msg_yes; }
233 	i = strlen(msg_all); if (i > len) {len = i; longest = msg_all; }
234 	i = strlen(msg_some); if (i > len) {len = i; longest = msg_some; }
235 	i = strlen(msg_none); if (i > len) {len = i; longest = msg_none; }
236 	select_menu_width = snprintf(NULL, 0, "%-30s %s", "", longest);
237 
238 	/* Give the md code a chance to choose the right kernel, etc. */
239 	md_init_set_status(flags);
240 }
241 
242 int
243 dir_exists_p(const char *path)
244 {
245 
246 	return file_mode_match(path, S_IFDIR);
247 }
248 
249 int
250 file_exists_p(const char *path)
251 {
252 
253 	return file_mode_match(path, S_IFREG);
254 }
255 
256 int
257 file_mode_match(const char *path, unsigned int mode)
258 {
259 	struct stat st;
260 
261 	return (stat(path, &st) == 0 && (st.st_mode & S_IFMT) == mode);
262 }
263 
264 /* return ram size in MB */
265 uint64_t
266 get_ramsize(void)
267 {
268 	static uint64_t ramsize;
269 
270 	if (ramsize == 0) {
271 		size_t len = sizeof ramsize;
272 		int mib[2] = {CTL_HW, HW_PHYSMEM64};
273 
274 		sysctl(mib, 2, &ramsize, &len, NULL, 0);
275 	}
276 
277 	/* Find out how many Megs ... round up. */
278 	return (ramsize + MEG - 1) / MEG;
279 }
280 
281 void
282 run_makedev(void)
283 {
284 	char *owd;
285 
286 	msg_display_add("\n\n");
287 	msg_display_add(MSG_makedev);
288 
289 	owd = getcwd(NULL, 0);
290 
291 	/* make /dev, in case the user  didn't extract it. */
292 	make_target_dir("/dev");
293 	target_chdir_or_die("/dev");
294 	run_program(0, "/bin/sh MAKEDEV all");
295 
296 	chdir(owd);
297 	free(owd);
298 }
299 
300 /*
301  * Performs in-place replacement of a set of patterns in a file that lives
302  * inside the installed system.  The patterns must be separated by a semicolon.
303  * For example:
304  *
305  * replace("/etc/some-file.conf", "s/prop1=NO/prop1=YES/;s/foo/bar/");
306  */
307 void
308 replace(const char *path, const char *patterns, ...)
309 {
310 	char *spatterns;
311 	va_list ap;
312 
313 	va_start(ap, patterns);
314 	vasprintf(&spatterns, patterns, ap);
315 	va_end(ap);
316 	if (spatterns == NULL)
317 		err(1, "vasprintf(&spatterns, \"%s\", ...)", patterns);
318 
319 	run_program(RUN_CHROOT, "sed -an -e '%s;H;$!d;g;w %s' %s", spatterns,
320 	    path, path);
321 
322 	free(spatterns);
323 }
324 
325 static int
326 floppy_fetch(const char *set_name)
327 {
328 	char post[4];
329 	msg errmsg;
330 	int menu;
331 	int status;
332 	const char *write_mode = ">";
333 
334 	strcpy(post, "aa");
335 
336 	errmsg = "";
337 	menu = MENU_fdok;
338 	for (;;) {
339 		umount_mnt2();
340 		msg_display(errmsg);
341 		msg_fmt_display_add(MSG_fdmount, "%s%s", set_name, post);
342 		process_menu(menu, &status);
343 		if (status != SET_CONTINUE)
344 			return status;
345 		menu = MENU_fdremount;
346 		errmsg = MSG_fdremount;
347 		if (run_program(0, "/sbin/mount -r -t %s %s /mnt2",
348 							fd_type, fd_dev))
349 			continue;
350 		mnt2_mounted = 1;
351 		errmsg = MSG_fdnotfound;
352 
353 		/* Display this because it might take a while.... */
354 		if (run_program(RUN_DISPLAY,
355 			    "sh -c '/bin/cat /mnt2/%s.%s %s %s/%s/%s%s'",
356 			    set_name, post, write_mode,
357 			    target_prefix(), xfer_dir, set_name,
358 			    set_postfix(set_name)))
359 			/* XXX: a read error will give a corrupt file! */
360 			continue;
361 
362 		/* We got that file, advance to next fragment */
363 		if (post[1] < 'z')
364 			post[1]++;
365 		else
366 			post[1] = 'a', post[0]++;
367 		write_mode = ">>";
368 		errmsg = "";
369 		menu = MENU_fdok;
370 	}
371 }
372 
373 /*
374  * Load files from floppy.  Requires a /mnt2 directory for mounting them.
375  */
376 int
377 get_via_floppy(void)
378 {
379 	int rv = -1;
380 
381 	process_menu(MENU_floppysource, &rv);
382 	if (rv == SET_RETRY)
383 		return SET_RETRY;
384 
385 	fetch_fn = floppy_fetch;
386 
387 	/* Set ext_dir for absolute path. */
388 	snprintf(ext_dir_bin, sizeof ext_dir_bin, "%s/%s", target_prefix(), xfer_dir);
389 	snprintf(ext_dir_src, sizeof ext_dir_src, "%s/%s", target_prefix(), xfer_dir);
390 
391 	return SET_OK;
392 }
393 
394 /*
395  * Get the volume name of a ISO9660 file system
396  */
397 static int
398 get_iso9660_volname(int dev, int sess, char *volname, size_t volnamelen)
399 {
400 	int blkno, error, last;
401 	static char buf[ISO_BLKSIZE] __aligned(8);
402 	struct iso_volume_descriptor *vd = NULL;
403 	struct iso_primary_descriptor *pd = NULL;
404 
405 	for (blkno = sess+16; blkno < sess+16+100; blkno++) {
406 		error = pread(dev, buf, ISO_BLKSIZE, blkno*ISO_BLKSIZE);
407 		if (error == -1)
408 			return -1;
409 		vd = (struct iso_volume_descriptor *)&buf;
410 		if (memcmp(vd->id, ISO_STANDARD_ID, sizeof(vd->id)) != 0)
411 			return -1;
412 		if (isonum_711((const unsigned char *)&vd->type)
413 		     == ISO_VD_PRIMARY) {
414 			pd = (struct iso_primary_descriptor*)buf;
415 			strncpy(volname, pd->volume_id, volnamelen - 1);
416 			volname[volnamelen - 1] = '\0';
417 			last = volnamelen - 1;
418 			while (last >= 0
419 			    && (volname[last] == ' ' || volname[last] == 0))
420 				last--;
421 			volname[last+1] = 0;
422 			return 0;
423 		}
424 	}
425 	return -1;
426 }
427 
428 /*
429  * Local state while iterating CDs and collecting volumes
430  */
431 struct get_available_cds_state {
432 	size_t num_mounted;
433 	struct statvfs *mounted;
434 	struct cd_info *info;
435 	size_t count;
436 };
437 
438 /*
439  * Callback function: if this is a CD, enumerate all volumes on it
440  */
441 static bool
442 get_available_cds_helper(void *arg, const char *device)
443 {
444 	struct get_available_cds_state *state = arg;
445 	char dname[16], tname[16], volname[80], *t;
446 	struct disklabel label;
447 	int part, dev, error, sess, ready, tlen;
448 
449 	if (!is_cdrom_device(device, false))
450 		return true;
451 
452 	sprintf(dname, "/dev/r%s%c", device, 'a'+RAW_PART);
453 	tlen = sprintf(tname, "/dev/%s", device);
454 
455 	/* check if this is mounted already */
456 	for (size_t i = 0; i < state->num_mounted; i++) {
457 		if (strncmp(state->mounted[i].f_mntfromname, tname, tlen)
458 		    == 0) {
459 			t = state->mounted[i].f_mntfromname + tlen;
460 			if (t[0] >= 'a' && t[0] <= 'z' && t[1] == 0)
461 				return true;
462 		}
463 	}
464 
465 	dev = open(dname, O_RDONLY, 0);
466 	if (dev == -1)
467 		return true;
468 
469 	ready = 0;
470 	error = ioctl(dev, DIOCTUR, &ready);
471 	if (error != 0 || ready == 0) {
472 		close(dev);
473 		return true;
474 	}
475 	error = ioctl(dev, DIOCGDINFO, &label);
476 	close(dev);
477 	if (error != 0)
478 		return true;
479 
480 	for (part = 0; part < label.d_npartitions; part++) {
481 
482 		if (label.d_partitions[part].p_fstype == FS_UNUSED
483 		    || label.d_partitions[part].p_size == 0)
484 			continue;
485 
486 		if (label.d_partitions[part].p_fstype == FS_ISO9660) {
487 			sess = label.d_partitions[part].p_cdsession;
488 			sprintf(dname, "/dev/r%s%c", device, 'a'+part);
489 			dev = open(dname, O_RDONLY, 0);
490 			if (dev == -1)
491 				continue;
492 			error = get_iso9660_volname(dev, sess, volname,
493 			    sizeof volname);
494 			close(dev);
495 			if (error)
496 				continue;
497 			sprintf(state->info->device_name,
498 			    "%s%c", device, 'a'+part);
499 			sprintf(state->info->menu, "%s (%s)",
500 			    state->info->device_name, volname);
501 		} else {
502 			/*
503 			 * All install CDs use partition
504 			 * a for the sets.
505 			 */
506 			if (part > 0)
507 				continue;
508 			sprintf(state->info->device_name,
509 			    "%s%c", device, 'a'+part);
510 			strcpy(state->info->menu, state->info->device_name);
511 		}
512 		state->info++;
513 		if (++state->count >= MAX_CD_INFOS)
514 			return false;
515 	}
516 
517 	return true;
518 }
519 
520 /*
521  * Get a list of all available CD media (not drives!), return
522  * the number of entries collected.
523  */
524 static int
525 get_available_cds(void)
526 {
527 	struct get_available_cds_state data;
528 	int n, m;
529 
530 	memset(&data, 0, sizeof data);
531 	data.info = cds;
532 
533 	n = getvfsstat(NULL, 0, ST_NOWAIT);
534 	if (n > 0) {
535 		data.mounted = calloc(n, sizeof(*data.mounted));
536 		m = getvfsstat(data.mounted, n*sizeof(*data.mounted),
537 		    ST_NOWAIT);
538 		assert(m >= 0 && m <= n);
539 		data.num_mounted = m;
540 	}
541 
542 	enumerate_disks(&data, get_available_cds_helper);
543 
544 	free(data.mounted);
545 
546 	return data.count;
547 }
548 
549 static int
550 cd_has_sets(void)
551 {
552 
553 	/* sanity check */
554 	if (cdrom_dev[0] == 0)
555 		return 0;
556 
557 	/* Mount it */
558 	if (run_program(RUN_SILENT, "/sbin/mount -rt cd9660 /dev/%s /mnt2",
559 	    cdrom_dev) != 0)
560 		return 0;
561 
562 	mnt2_mounted = 1;
563 
564 	snprintf(ext_dir_bin, sizeof ext_dir_bin, "%s/%s", "/mnt2", set_dir_bin);
565 	snprintf(ext_dir_src, sizeof ext_dir_src, "%s/%s", "/mnt2", set_dir_src);
566 	return dir_exists_p(ext_dir_bin);
567 }
568 
569 /*
570  * Check whether we can remove the boot media.
571  * If it is not a local filesystem, return -1.
572  * If we can not decide for sure (can not tell MD content from plain ffs
573  * on hard disk, for example), return 0.
574  * If it is a CD/DVD, return 1.
575  */
576 int
577 boot_media_still_needed(void)
578 {
579 	struct statvfs sb;
580 
581 	if (statvfs("/", &sb) == 0) {
582 		if (!(sb.f_flag & ST_LOCAL))
583 			return -1;
584 		if (strcmp(sb.f_fstypename, MOUNT_CD9660) == 0
585 			   || strcmp(sb.f_fstypename, MOUNT_UDF) == 0)
586 			return 1;
587 	}
588 
589 	return 0;
590 }
591 
592 bool
593 root_is_read_only(void)
594 {
595 	struct statvfs sb;
596 
597 	if (statvfs("/", &sb) == 0)
598 		return sb.f_flag & ST_RDONLY;
599 
600 	return false;
601 }
602 
603 /*
604  * Get from a CDROM distribution.
605  * Also used on "installation using bootable install media"
606  * as the default option in the "distmedium" menu.
607  */
608 int
609 get_via_cdrom(void)
610 {
611 	menu_ent cd_menu[MAX_CD_INFOS];
612 	struct stat sb;
613 	int rv, num_cds, menu_cd, i, selected_cd = 0;
614 	int mib[2];
615 	char rootdev[SSTRSIZE] = "";
616 	size_t varlen;
617 
618 	/* If root is not md(4) and we have set dir, skip this step. */
619 	mib[0] = CTL_KERN;
620 	mib[1] = KERN_ROOT_DEVICE;
621 	varlen = sizeof(rootdev);
622 	(void)sysctl(mib, 2, rootdev, &varlen, NULL, 0);
623 	if (stat(set_dir_bin, &sb) == 0 && S_ISDIR(sb.st_mode) &&
624 	    strncmp("md", rootdev, 2) != 0) {
625 	    	strlcpy(ext_dir_bin, set_dir_bin, sizeof ext_dir_bin);
626 	    	strlcpy(ext_dir_src, set_dir_src, sizeof ext_dir_src);
627 		return SET_OK;
628 	}
629 
630 	memset(cd_menu, 0, sizeof(cd_menu));
631 	num_cds = get_available_cds();
632 	if (num_cds <= 0) {
633 		msg_display(MSG_No_cd_found);
634 		cdrom_dev[0] = 0;
635 	} else if (num_cds == 1) {
636 		/* single CD found, check for sets on it */
637 		strcpy(cdrom_dev, cds[0].device_name);
638 		if (cd_has_sets())
639 			return SET_OK;
640 	} else {
641 		for (i = 0; i< num_cds; i++) {
642 			cd_menu[i].opt_name = cds[i].menu;
643 			cd_menu[i].opt_flags = OPT_EXIT;
644 			cd_menu[i].opt_action = set_menu_select;
645 		}
646 		/* create a menu offering available choices */
647 		menu_cd = new_menu(MSG_Available_cds,
648 			cd_menu, num_cds, -1, 4, 0, 0,
649 			MC_SCROLL | MC_NOEXITOPT,
650 			NULL, NULL, NULL, NULL, NULL);
651 		if (menu_cd == -1)
652 			return SET_RETRY;
653 		msg_display(MSG_ask_cd);
654 		process_menu(menu_cd, &selected_cd);
655 		free_menu(menu_cd);
656 		strcpy(cdrom_dev, cds[selected_cd].device_name);
657 		if (cd_has_sets())
658 			return SET_OK;
659 	}
660 
661 	if (num_cds >= 1 && mnt2_mounted) {
662 		umount_mnt2();
663 		hit_enter_to_continue(MSG_cd_path_not_found, NULL);
664 	}
665 
666 	/* ask for paths on the CD */
667 	rv = -1;
668 	process_menu(MENU_cdromsource, &rv);
669 	if (rv == SET_RETRY || rv == SET_ABANDON)
670 		return rv;
671 
672 	if (cd_has_sets())
673 		return SET_OK;
674 
675 	return SET_RETRY;
676 }
677 
678 
679 /*
680  * Get from a pathname inside an unmounted local filesystem
681  * (e.g., where sets were preloaded onto a local DOS partition)
682  */
683 int
684 get_via_localfs(void)
685 {
686 	int rv = -1;
687 
688 	/* Get device, filesystem, and filepath */
689 	process_menu (MENU_localfssource, &rv);
690 	if (rv == SET_RETRY)
691 		return SET_RETRY;
692 
693 	/* Mount it */
694 	if (run_program(0, "/sbin/mount -rt %s /dev/%s /mnt2",
695 	    localfs_fs, localfs_dev))
696 		return SET_RETRY;
697 
698 	mnt2_mounted = 1;
699 
700 	snprintf(ext_dir_bin, sizeof ext_dir_bin, "%s/%s/%s",
701 		"/mnt2", localfs_dir, set_dir_bin);
702 	snprintf(ext_dir_src, sizeof ext_dir_src, "%s/%s/%s",
703 		"/mnt2", localfs_dir, set_dir_src);
704 
705 	return SET_OK;
706 }
707 
708 /*
709  * Get from an already-mounted pathname.
710  */
711 
712 int
713 get_via_localdir(void)
714 {
715 	int rv = -1;
716 
717 	/* Get filepath */
718 	process_menu(MENU_localdirsource, &rv);
719 	if (rv == SET_RETRY)
720 		return SET_RETRY;
721 
722 	/*
723 	 * We have to have an absolute path ('cos pax runs in a
724 	 * different directory), make it so.
725 	 */
726 	snprintf(ext_dir_bin, sizeof ext_dir_bin, "/%s/%s", localfs_dir, set_dir_bin);
727 	snprintf(ext_dir_src, sizeof ext_dir_src, "/%s/%s", localfs_dir, set_dir_src);
728 
729 	return SET_OK;
730 }
731 
732 
733 /*
734  * Support for custom distribution fetches / unpacks.
735  */
736 
737 unsigned int
738 set_X11_selected(void)
739 {
740 	int i;
741 
742 	for (i = SET_X11_FIRST; ++i < SET_X11_LAST;)
743 		if (set_status[i] & SET_SELECTED)
744 			return 1;
745 	return 0;
746 }
747 
748 unsigned int
749 get_kernel_set(void)
750 {
751 	int i;
752 
753 	for (i = SET_KERNEL_FIRST; ++i < SET_KERNEL_LAST;)
754 		if (set_status[i] & SET_SELECTED)
755 			return i;
756 	return SET_NONE;
757 }
758 
759 void
760 set_kernel_set(unsigned int kernel_set)
761 {
762 	int i;
763 
764 	/* only one kernel set is allowed */
765 	for (i = SET_KERNEL_FIRST; ++i < SET_KERNEL_LAST;)
766 		set_status[i] &= ~SET_SELECTED;
767 	set_status[kernel_set] |= SET_SELECTED;
768 }
769 
770 void
771 set_noextract_set(unsigned int set)
772 {
773 
774 	set_status[set] |= SET_NO_EXTRACT;
775 }
776 
777 static int
778 set_toggle(menudesc *menu, void *arg)
779 {
780 	distinfo **distp = arg;
781 	int set = distp[menu->cursel]->set;
782 
783 	if (set > SET_KERNEL_FIRST && set < SET_KERNEL_LAST &&
784 	    !(set_status[set] & SET_SELECTED))
785 		set_kernel_set(set);
786 	else
787 		set_status[set] ^= SET_SELECTED;
788 	return 0;
789 }
790 
791 static int
792 set_all_none(menudesc *menu, void *arg, int set, int clr)
793 {
794 	distinfo **distp = arg;
795 	distinfo *dist = *distp;
796 	int nested;
797 
798 	for (nested = 0; dist->set != SET_GROUP_END || nested--; dist++) {
799 		if (dist->set == SET_GROUP) {
800 			nested++;
801 			continue;
802 		}
803 		set_status[dist->set] = (set_status[dist->set] & ~clr) | set;
804 	}
805 	return 0;
806 }
807 
808 static int
809 set_all(menudesc *menu, void *arg)
810 {
811 	return set_all_none(menu, arg, SET_SELECTED, 0);
812 }
813 
814 static int
815 set_none(menudesc *menu, void *arg)
816 {
817 	return set_all_none(menu, arg, 0, SET_SELECTED);
818 }
819 
820 static void
821 set_label(menudesc *menu, int opt, void *arg)
822 {
823 	distinfo **distp = arg;
824 	distinfo *dist = distp[opt];
825 	const char *selected;
826 	const char *desc;
827 	int nested;
828 
829 	desc = dist->desc;
830 
831 	if (dist->set != SET_GROUP)
832 		selected = set_status[dist->set] & SET_SELECTED ? msg_yes : msg_no;
833 	else {
834 		/* sub menu - display None/Some/All */
835 		nested = 0;
836 		selected = "unknown";
837 		while ((++dist)->set != SET_GROUP_END || nested--) {
838 			if (dist->set == SET_GROUP) {
839 				nested++;
840 				continue;
841 			}
842 			if (!(set_status[dist->set] & SET_VALID))
843 				continue;
844 			if (set_status[dist->set] & SET_SELECTED) {
845 				if (selected == msg_none) {
846 					selected = msg_some;
847 					break;
848 				}
849 				selected = msg_all;
850 			} else {
851 				if (selected == msg_all) {
852 					selected = msg_some;
853 					break;
854 				}
855 				selected = msg_none;
856 			}
857 		}
858 	}
859 
860 	wprintw(menu->mw, "%-30s %s", msg_string(desc), selected);
861 }
862 
863 static int set_sublist(menudesc *menu, void *arg);
864 
865 static int
866 initialise_set_menu(distinfo *dist, menu_ent *me, distinfo **de, int all_none)
867 {
868 	int set;
869 	int sets;
870 	int nested;
871 
872 	for (sets = 0; ; dist++) {
873 		set = dist->set;
874 		if (set == SET_LAST || set == SET_GROUP_END)
875 			break;
876 		if (!(set_status[set] & SET_VALID))
877 			continue;
878 		*de = dist;
879 		memset(me, 0, sizeof(*me));
880 		if (set != SET_GROUP)
881 			me->opt_action = set_toggle;
882 		else {
883 			/* Collapse sublist */
884 			nested = 0;
885 			while ((++dist)->set != SET_GROUP_END || nested--) {
886 				if (dist->set == SET_GROUP)
887 					nested++;
888 			}
889 			me->opt_action = set_sublist;
890 		}
891 		sets++;
892 		de++;
893 		me++;
894 	}
895 
896 	if (all_none) {
897 		me->opt_name = MSG_select_all;
898 		me->opt_action = set_all;
899 		me++;
900 		me->opt_name = MSG_select_none;
901 		me->opt_action = set_none;
902 		sets += 2;
903 	}
904 
905 	return sets;
906 }
907 
908 static int
909 set_sublist(menudesc *menu, void *arg)
910 {
911 	distinfo *de[SET_LAST];
912 	menu_ent me[SET_LAST];
913 	distinfo **dist = arg;
914 	int menu_no;
915 	int sets;
916 
917 	memset(me, 0, sizeof(me));
918 	sets = initialise_set_menu(dist[menu->cursel] + 1, me, de, 1);
919 
920 	menu_no = new_menu(NULL, me, sets, 20, 10, 0, select_menu_width,
921 		MC_SUBMENU | MC_SCROLL | MC_DFLTEXIT,
922 		NULL, set_label, NULL, NULL,
923 		MSG_install_selected_sets);
924 
925 	process_menu(menu_no, de);
926 	free_menu(menu_no);
927 
928 	return 0;
929 }
930 
931 void
932 customise_sets(void)
933 {
934 	distinfo *de[SET_LAST];
935 	menu_ent me[SET_LAST];
936 	int sets;
937 	int menu_no;
938 
939 	msg_display(MSG_cur_distsets);
940 	msg_table_add(MSG_cur_distsets_header);
941 
942 	memset(me, 0, sizeof(me));
943 	sets = initialise_set_menu(dist_list, me, de, 0);
944 
945 	menu_no = new_menu(NULL, me, sets, 0, 5, 0, select_menu_width,
946 		MC_SCROLL | MC_NOBOX | MC_DFLTEXIT | MC_NOCLEAR,
947 		NULL, set_label, NULL, NULL,
948 		MSG_install_selected_sets);
949 
950 	process_menu(menu_no, de);
951 	free_menu(menu_no);
952 }
953 
954 /*
955  * Extract_file **REQUIRES** an absolute path in ext_dir.  Any code
956  * that sets up xfer_dir for use by extract_file needs to put in the
957  * full path name to the directory.
958  */
959 
960 int
961 extract_file(distinfo *dist, int update)
962 {
963 	const char *dest_dir = NULL;
964 
965 	if (update && (dist->set == SET_ETC || dist->set == SET_X11_ETC)) {
966 		dest_dir = "/.sysinst";
967 		make_target_dir(dest_dir);
968 	} else if (dist->set == SET_PKGSRC)
969 		dest_dir = "/usr";
970 	else
971 		dest_dir = "/";
972 
973 	return extract_file_to(dist, update, dest_dir, NULL, true);
974 }
975 
976 int
977 extract_file_to(distinfo *dist, int update, const char *dest_dir,
978     const char *extr_pattern, bool do_stats)
979 {
980 	char path[STRSIZE];
981 	char *owd;
982 	int   rval;
983 
984 	/* If we might need to tidy up, ensure directory exists */
985 	if (fetch_fn != NULL)
986 		make_target_dir(xfer_dir);
987 
988 	(void)snprintf(path, sizeof path, "%s/%s%s",
989 	    ext_dir_for_set(dist->name), dist->name, set_postfix(dist->name));
990 
991 	owd = getcwd(NULL, 0);
992 
993 	/* Do we need to fetch the file now? */
994 	if (fetch_fn != NULL) {
995 		rval = fetch_fn(dist->name);
996 		if (rval != SET_OK)
997 			return rval;
998 	}
999 
1000 	/* check tarfile exists */
1001 	if (!file_exists_p(path)) {
1002 
1003 #ifdef SUPPORT_8_3_SOURCE_FILESYSTEM
1004 		/*
1005 		 * Update path to use dist->name truncated to the first eight
1006 		 * characters and check again
1007 		 */
1008 		(void)snprintf(path, sizeof path,
1009 		    "%s/%.8s%.4s", /* 4 as includes '.' */
1010 		    ext_dir_for_set(dist->name), dist->name,
1011 		    set_postfix(dist->name));
1012 
1013 		if (!file_exists_p(path)) {
1014 #endif /* SUPPORT_8_3_SOURCE_FILESYSTEM */
1015 			if (do_stats)
1016 				tarstats.nnotfound++;
1017 
1018 			char *err = str_arg_subst(msg_string(MSG_notarfile),
1019 			    1, &dist->name);
1020 			hit_enter_to_continue(err, NULL);
1021 			free(err);
1022 			free(owd);
1023 			return SET_RETRY;
1024 		}
1025 #ifdef SUPPORT_8_3_SOURCE_FILESYSTEM
1026 	}
1027 #endif /* SUPPORT_8_3_SOURCE_FILESYSTEM */
1028 
1029 	if (do_stats)
1030 		tarstats.nfound++;
1031 	/* cd to the target root. */
1032 	target_chdir_or_die(dest_dir);
1033 
1034 	/*
1035 	 * /usr/X11R7/lib/X11/xkb/symbols/pc was a directory in 5.0
1036 	 * but is a file in 5.1 and beyond, so on upgrades we need to
1037 	 * delete it before extracting the xbase set.
1038 	 */
1039 	if (update && dist->set == SET_X11_BASE)
1040 		run_program(0, "rm -rf usr/X11R7/lib/X11/xkb/symbols/pc");
1041 
1042 	/* now extract set files into "./". */
1043 	if (extr_pattern != NULL) {
1044 		rval = run_program(RUN_DISPLAY | RUN_PROGRESS,
1045 				"progress -zf %s tar --chroot "
1046 				TAR_EXTRACT_FLAGS " - '%s'",
1047 				path, extr_pattern);
1048 	} else {
1049 		rval = run_program(RUN_DISPLAY | RUN_PROGRESS,
1050 				"progress -zf %s tar --chroot "
1051 				TAR_EXTRACT_FLAGS " -", path);
1052 	}
1053 
1054 	chdir(owd);
1055 	free(owd);
1056 
1057 	/* Check rval for errors and give warning. */
1058 	if (rval != 0) {
1059 		if (do_stats)
1060 			tarstats.nerror++;
1061 		msg_fmt_display(MSG_tarerror, "%s", path);
1062 		hit_enter_to_continue(NULL, NULL);
1063 		return SET_RETRY;
1064 	}
1065 
1066 	if (fetch_fn != NULL && clean_xfer_dir) {
1067 		run_program(0, "rm %s", path);
1068 		/* Plausibly we should unlink an empty xfer_dir as well */
1069 	}
1070 
1071 	set_status[dist->set] |= SET_INSTALLED;
1072 	if (do_stats)
1073 		tarstats.nsuccess++;
1074 	return SET_OK;
1075 }
1076 
1077 static void
1078 skip_set(distinfo *dist, int skip_type)
1079 {
1080 	int nested;
1081 	int set;
1082 
1083 	nested = 0;
1084 	while ((++dist)->set != SET_GROUP_END || nested--) {
1085 		set = dist->set;
1086 		if (set == SET_GROUP) {
1087 			nested++;
1088 			continue;
1089 		}
1090 		if (set == SET_LAST)
1091 			break;
1092 		if (set_status[set] == (SET_SELECTED | SET_VALID))
1093 			set_status[set] |= SET_SKIPPED;
1094 		tarstats.nskipped++;
1095 	}
1096 }
1097 
1098 distinfo*
1099 get_set_distinfo(int opt)
1100 {
1101 	distinfo *dist;
1102 	int set;
1103 
1104 	for (dist = dist_list; (set = dist->set) != SET_LAST; dist++) {
1105 		if (set != opt)
1106 			continue;
1107 		if (dist->name == NULL)
1108 			continue;
1109 		if ((set_status[set] & (SET_VALID | SET_SELECTED))
1110 		    != (SET_VALID | SET_SELECTED))
1111 			continue;
1112 		return dist;
1113 	}
1114 
1115 	return NULL;
1116 }
1117 
1118 #ifdef CHECK_ENTROPY
1119 
1120 char entropy_file[PATH_MAX];
1121 
1122 /*
1123  * Are we short of entropy?
1124  */
1125 size_t
1126 entropy_needed(void)
1127 {
1128 	int needed;
1129 	size_t len;
1130 
1131 	len = sizeof(needed);
1132 	if (sysctlbyname("kern.entropy.needed", &needed, &len, NULL, 0))
1133 		return 0;
1134 
1135 	if (needed < 0)
1136 		return 0;
1137 
1138 	return needed;
1139 }
1140 
1141 static void
1142 entropy_write_to_kernel(const uint8_t *data, size_t len)
1143 {
1144 	int fd;
1145 
1146 	fd = open(_PATH_RANDOM, O_RDWR, 0);
1147 	if (fd >= 0) {
1148 		write(fd, data, len);
1149 		close(fd);
1150 	}
1151 }
1152 
1153 static void
1154 entropy_add_manual(void)
1155 {
1156 	SHA256_CTX ctx;
1157 	char buf[256];
1158 	uint8_t digest[SHA256_DIGEST_LENGTH];
1159 	static const char prompt[] = "> ";
1160 	size_t l;
1161 	int txt_y;
1162 
1163 	msg_display(MSG_entropy_enter_manual1);
1164 	msg_printf("\n\n");
1165 	msg_display_add(MSG_entropy_enter_manual2);
1166 	msg_printf("\n\n   dd if=/dev/random bs=32 count=1 | openssl base64\n\n");
1167 	msg_display_add(MSG_entropy_enter_manual3);
1168 	msg_printf("\n\n");
1169 	SHA256_Init(&ctx);
1170 	txt_y = getcury(mainwin)+1;
1171 
1172 	echo();
1173 	wmove(mainwin, txt_y, 0);
1174 	msg_fmt_table_add(prompt, prompt);
1175 	mvwgetnstr(mainwin, txt_y, 2, buf, sizeof buf);
1176 	l = strlen(buf);
1177 	if (l > 0)
1178 		SHA256_Update(&ctx, (const uint8_t*)buf, l);
1179 	noecho();
1180 	SHA256_Final(digest, &ctx);
1181 
1182 	wmove(mainwin, txt_y-1, 0);
1183 	wclrtobot(mainwin);
1184 	wrefresh(mainwin);
1185 
1186 	entropy_write_to_kernel(digest, sizeof digest);
1187 }
1188 
1189 /*
1190  * Get a file by some means and return a (potentially only
1191  * temporary valid) path to the local copy.
1192  * If mountpt is nonempty, the caller should unmount that
1193  * directory after processing the file.
1194  * Return success if the file is available, or failure if
1195  * the user cancelled the request or network transfer failed.
1196  */
1197 static bool
1198 entropy_get_file(bool use_netbsd_seed, char *path)
1199 {
1200 	static struct ftpinfo server = { .user = "ftp" };
1201 	char url[STRSIZE], tmpf[PATH_MAX], mountpt[PATH_MAX];
1202 	const char *ftp_opt;
1203 	arg_rv arg;
1204 	int rv = 0;
1205 	const char *file_desc = msg_string(use_netbsd_seed ?
1206 	    MSG_entropy_seed : MSG_entropy_data);
1207 	char *dir;
1208 
1209 	path[0] = 0;
1210 	mountpt[0] = 0;
1211 
1212 	sprintf(tmpf, "/tmp/entr.%06x", getpid());
1213 
1214 	msg_display(use_netbsd_seed ?
1215 	    MSG_entropy_seed_hdr : MSG_entropy_data_hdr);
1216 	msg_printf("\n\n    %s\n\n",
1217 	    use_netbsd_seed ?
1218 	    "rndctl -S /tmp/entropy-file" :
1219 	    "dd if=/dev/random bs=32 count=1 of=/tmp/random.tmp");
1220 	strcpy(entropy_file, use_netbsd_seed ?
1221 	    "entropy-file" : "random.tmp");
1222 	process_menu(MENU_entropy_select_file, &rv);
1223 	switch (rv) {
1224 	case 1:
1225 	case 2:
1226 #ifndef DEBUG
1227 		if (!network_up)
1228 			config_network(0);
1229 #endif
1230 		server.xfer = rv == 1 ? XFER_HTTP : XFER_FTP;
1231 		arg.arg = &server;
1232 		arg.rv = -1;
1233 		msg_display_add_subst(MSG_entropy_via_download, 1, file_desc);
1234 		msg_printf("\n\n");
1235 		process_menu(MENU_entropy_ftpsource, &arg);
1236 		if (arg.rv == SET_RETRY)
1237 			return false;
1238 		make_url(url, &server, entropy_file);
1239 		if (server.xfer == XFER_FTP &&
1240 		    strcmp("ftp", server.user) == 0 && server.pass[0] == 0) {
1241 			/* do anon ftp */
1242 			ftp_opt = "-a ";
1243 		} else {
1244 			ftp_opt = "";
1245 		}
1246 		rv = run_program(RUN_DISPLAY | RUN_PROGRESS,
1247 		    "/usr/bin/ftp %s -o %s %s",
1248 		    ftp_opt, tmpf, url);
1249 		strcpy(path, tmpf);
1250 		return rv == 0;
1251 	case 3:
1252 #ifndef DEBUG
1253 		if (!network_up)
1254 			config_network(0);
1255 #endif
1256 		rv = -1;
1257 		msg_display_add_subst(MSG_entropy_via_nfs, 1, file_desc);
1258 		msg_printf("\n\n");
1259 		process_menu(MENU_entropy_nfssource, &rv);
1260 		if (rv == SET_RETRY)
1261 			return false;
1262 		if (nfs_host[0] != 0 && nfs_dir[0] != 0 &&
1263 		    entropy_file[0] != 0) {
1264 			strcpy(mountpt, "/tmp/ent-mnt.XXXXXX");
1265 			dir = mkdtemp(mountpt);
1266 			if (dir == NULL)
1267 				return false;
1268 			sprintf(path, "%s/%s", mountpt, entropy_file);
1269 			if (run_program(RUN_SILENT,
1270 			    "mount -t nfs -r %s:/%s %s",
1271 			    nfs_host, nfs_dir, mountpt) == 0) {
1272 				run_program(RUN_SILENT,
1273 				    "cp %s %s", path, tmpf);
1274 				run_program(RUN_SILENT,
1275 				    "umount %s", mountpt);
1276 				rmdir(mountpt);
1277 				strcpy(path, tmpf);
1278 			}
1279 		}
1280 		break;
1281 	case 4:
1282 		rv = -1;
1283 		/* Get device, filesystem, and filepath */
1284 		process_menu (MENU_entropy_localfs, &rv);
1285 		if (rv == SET_RETRY)
1286 			return false;
1287 		if (localfs_dev[0] != 0 && localfs_fs[0] != 0 &&
1288 		    entropy_file[0] != 0) {
1289 			strcpy(mountpt, "/tmp/ent-mnt.XXXXXX");
1290 			dir = mkdtemp(mountpt);
1291 			if (dir == NULL)
1292 				return false;
1293 			sprintf(path, "%s/%s", mountpt, entropy_file);
1294 			if (run_program(RUN_SILENT,
1295 			    "mount -t %s -r /dev/%s %s",
1296 			    localfs_fs, localfs_dev, mountpt) == 0) {
1297 				run_program(RUN_SILENT,
1298 				    "cp %s %s", path, tmpf);
1299 				run_program(RUN_SILENT,
1300 				    "umount %s", mountpt);
1301 				rmdir(mountpt);
1302 				strcpy(path, tmpf);
1303 			}
1304 		}
1305 		break;
1306 	}
1307 	return path[0] != 0;
1308 }
1309 
1310 static void
1311 entropy_add_bin_file(void)
1312 {
1313 	char fname[PATH_MAX];
1314 
1315 	if (!entropy_get_file(false, fname))
1316 		return;
1317 	if (access(fname, R_OK) == 0)
1318 		run_program(RUN_SILENT, "dd if=%s of=" _PATH_RANDOM,
1319 		    fname);
1320 }
1321 
1322 static void
1323 entropy_add_seed(void)
1324 {
1325 	char fname[PATH_MAX];
1326 
1327 	if (!entropy_get_file(true, fname))
1328 		return;
1329 	if (access(fname, R_OK) == 0)
1330 		run_program(RUN_SILENT, "rndctl -L %s", fname);
1331 }
1332 
1333 /*
1334  * return true if we have enough entropy
1335  */
1336 bool
1337 do_add_entropy(void)
1338 {
1339 	int rv;
1340 
1341 	if (entropy_needed() == 0)
1342 		return true;
1343 
1344 	for (;;) {
1345 		if (entropy_needed() == 0)
1346 			break;
1347 
1348 		msg_clear();
1349 		rv = 0;
1350 		process_menu(MENU_not_enough_entropy, &rv);
1351 		switch (rv) {
1352 		case 0:
1353 			return false;
1354 		case 1:
1355 			entropy_add_manual();
1356 			break;
1357 		case 2:
1358 			entropy_add_seed();
1359 			break;
1360 		case 3:
1361 			entropy_add_bin_file();
1362 			break;
1363 		default:
1364 			/*
1365 			 * retry after small delay to give a new USB device
1366 			 * a chance to attach and do deliver some
1367 			 * entropy
1368 			 */
1369 			msg_display(".");
1370 			for (size_t i = 0; i < 10; i++) {
1371 				if (entropy_needed() == 0)
1372 					return true;
1373 				sleep(1);
1374 				msg_display_add(".");
1375 			}
1376 		}
1377 	}
1378 
1379 	/*
1380 	 * Save entropy (maybe again) to give the seed file a good
1381 	 * entropy estimate.
1382 	 */
1383 	run_program(RUN_SILENT | RUN_CHROOT | RUN_ERROR_OK,
1384 	    "/etc/rc.d/random_seed stop");
1385 
1386 	return true;
1387 }
1388 #endif
1389 
1390 
1391 
1392 /*
1393  * Get and unpack the distribution.
1394  * Show success_msg if installation completes.
1395  * Otherwise show failure_msg and wait for the user to ack it before continuing.
1396  * success_msg and failure_msg must both be 0-adic messages.
1397  */
1398 int
1399 get_and_unpack_sets(int update, msg setupdone_msg, msg success_msg, msg failure_msg)
1400 {
1401 	distinfo *dist;
1402 	int status;
1403 	int set, olderror, oldfound;
1404 	bool entropy_loaded = false;
1405 
1406 	/* Ensure mountpoint for distribution files exists in current root. */
1407 	(void)mkdir("/mnt2", S_IRWXU| S_IRGRP|S_IXGRP | S_IROTH|S_IXOTH);
1408 	if (script)
1409 		(void)fprintf(script, "mkdir -m 755 /mnt2\n");
1410 
1411 	/* reset failure/success counters */
1412 	memset(&tarstats, 0, sizeof(tarstats));
1413 
1414 	/* Find out which files to "get" if we get files. */
1415 
1416 	/* Accurately count selected sets */
1417 	for (dist = dist_list; (set = dist->set) != SET_LAST; dist++) {
1418 		if (dist->name == NULL)
1419 			continue;
1420 		if (set_status[set] & SET_NO_EXTRACT)
1421 			continue;
1422 		if ((set_status[set] & (SET_VALID | SET_SELECTED))
1423 		    == (SET_VALID | SET_SELECTED))
1424 			tarstats.nselected++;
1425 	}
1426 
1427 	status = SET_RETRY;
1428 	for (dist = dist_list; (set = dist->set) != SET_LAST; dist++) {
1429 		if (dist->name == NULL)
1430 			continue;
1431 		if (set_status[set] != (SET_VALID | SET_SELECTED))
1432 			continue;
1433 
1434 		/* save stats, in case we will retry */
1435 		oldfound = tarstats.nfound;
1436 		olderror = tarstats.nerror;
1437 
1438 		if (status != SET_OK) {
1439 			/* This might force a redraw.... */
1440 			clearok(curscr, 1);
1441 			touchwin(stdscr);
1442 			wrefresh(stdscr);
1443 			/* Sort out the location of the set files */
1444 			do {
1445 				umount_mnt2();
1446 				msg_fmt_display(MSG_distmedium, "%d%d%s",
1447 				    tarstats.nselected,
1448 				    tarstats.nsuccess + tarstats.nskipped,
1449 				    dist->name);
1450 				fetch_fn = NULL;
1451 				process_menu(MENU_distmedium, &status);
1452 			} while (status == SET_RETRY);
1453 
1454 			if (status == SET_SKIP) {
1455 				set_status[set] |= SET_SKIPPED;
1456 				tarstats.nskipped++;
1457 				continue;
1458 			}
1459 			if (status == SET_SKIP_GROUP) {
1460 				skip_set(dist, status);
1461 				continue;
1462 			}
1463 			if (status != SET_OK) {
1464 				hit_enter_to_continue(failure_msg, NULL);
1465 				return 1;
1466 			}
1467 		}
1468 
1469 		if (set_status[set] & SET_NO_EXTRACT)
1470 			continue;
1471 
1472 		/* Try to extract this set */
1473 		status = extract_file(dist, update);
1474 		if (status == SET_RETRY) {
1475 			/* do this set again */
1476 			dist--;
1477 			/* and reset statistics to what we had before this
1478 			 * set */
1479 			tarstats.nfound = oldfound;
1480 			tarstats.nerror = olderror;
1481 		}
1482 	}
1483 
1484 #ifdef MD_SET_EXTRACT_FINALIZE
1485 	MD_SET_EXTRACT_FINALIZE(update);
1486 #endif
1487 
1488 	if (tarstats.nerror == 0 && tarstats.nsuccess == tarstats.nselected) {
1489 		msg_display(MSG_endtarok);
1490 		/* Give user a chance to see the success message */
1491 		sleep(1);
1492 	} else {
1493 		/* We encountered errors. Let the user know. */
1494 		msg_fmt_display(MSG_endtar, "%d%d%d%d%d%d",
1495 		    tarstats.nselected, tarstats.nnotfound, tarstats.nskipped,
1496 		    tarstats.nfound, tarstats.nsuccess, tarstats.nerror);
1497 		hit_enter_to_continue(NULL, NULL);
1498 	}
1499 
1500 	/*
1501 	 * postinstall needs to be run after extracting all sets, because
1502 	 * otherwise /var/db/obsolete will only have current information
1503 	 * from the base, comp, and etc sets.
1504 	 */
1505 	if (update && (set_status[SET_ETC] & SET_INSTALLED)) {
1506 		int oldsendmail;
1507 		oldsendmail = run_program(RUN_DISPLAY | RUN_CHROOT |
1508 					  RUN_ERROR_OK | RUN_PROGRESS,
1509 					  "/usr/sbin/postinstall -s /.sysinst -d / check mailerconf");
1510 		if (oldsendmail == 1) {
1511 			msg_display(MSG_oldsendmail);
1512 			if (ask_yesno(NULL)) {
1513 				run_program(RUN_DISPLAY | RUN_CHROOT,
1514 					    "/usr/sbin/postinstall -s /.sysinst -d / fix mailerconf");
1515 			}
1516 		}
1517 		run_program(RUN_DISPLAY | RUN_CHROOT,
1518 			"/usr/sbin/postinstall -s /.sysinst -d / fix");
1519 
1520 		/* Don't discard the system's old entropy if any */
1521 		run_program(RUN_CHROOT | RUN_SILENT,
1522 		    "/etc/rc.d/random_seed start");
1523 		entropy_loaded = true;
1524 	}
1525 
1526 	/* Configure the system */
1527 	if (set_status[SET_BASE] & SET_INSTALLED) {
1528 		run_makedev();
1529 		if (!update) {
1530 			run_program(RUN_CHROOT|RUN_DISPLAY,
1531 			    "/usr/sbin/certctl rehash");
1532 		}
1533 	}
1534 
1535 	if (!update) {
1536 		struct stat sb1, sb2;
1537 
1538 		if (stat(target_expand("/"), &sb1) == 0
1539 		    && stat(target_expand("/var"), &sb2) == 0
1540 		    && sb1.st_dev != sb2.st_dev) {
1541 			add_rc_conf("random_file=/etc/entropy-file\n");
1542 			if (target_file_exists_p("/boot.cfg")) {
1543 				run_program(RUN_CHROOT|RUN_FATAL,
1544 					    "sh -c 'sed -e s./var/db/./etc/. "
1545 					    "< /boot.cfg "
1546 					    "> /tmp/boot.cfg.tmp'");
1547 				mv_within_target_or_die("/tmp/boot.cfg.tmp",
1548 							"/boot.cfg");
1549 
1550 			}
1551 		}
1552 
1553 #ifdef MD_BOOT_CFG_FINALIZE
1554 		if (target_file_exists_p("/boot.cfg")) {
1555 			MD_BOOT_CFG_FINALIZE("/boot.cfg");
1556 		}
1557 #endif
1558 
1559 		/* Save keyboard type */
1560 		save_kb_encoding();
1561 
1562 		/* Other configuration. */
1563 		mnt_net_config();
1564 	}
1565 
1566 	/* Mounted dist dir? */
1567 	umount_mnt2();
1568 
1569 #ifdef CHECK_ENTROPY
1570 	entropy_loaded |= entropy_needed() == 0;
1571 #endif
1572 
1573 	/* Save entropy -- on some systems it's ~all we'll ever get */
1574 	if (!update || entropy_loaded)
1575 		run_program(RUN_SILENT | RUN_CHROOT | RUN_ERROR_OK,
1576 		    "/etc/rc.d/random_seed stop");
1577 	/* Install/Upgrade complete ... reboot or exit to script */
1578 	hit_enter_to_continue(success_msg, NULL);
1579 	return 0;
1580 }
1581 
1582 void
1583 umount_mnt2(void)
1584 {
1585 	if (!mnt2_mounted)
1586 		return;
1587 	run_program(RUN_SILENT, "/sbin/umount /mnt2");
1588 	mnt2_mounted = 0;
1589 }
1590 
1591 
1592 /*
1593  * Do a quick sanity check that  the target can reboot.
1594  * return 1 if everything OK, 0 if there is a problem.
1595  * Uses a table of files we expect to find after a base install/upgrade.
1596  */
1597 
1598 /* test flag and pathname to check for after unpacking. */
1599 struct check_table { unsigned int mode; const char *path;} checks[] = {
1600   { S_IFREG, "/netbsd" },
1601   { S_IFDIR, "/etc" },
1602   { S_IFREG, "/etc/fstab" },
1603   { S_IFREG, "/sbin/init" },
1604   { S_IFREG, "/bin/sh" },
1605   { S_IFREG, "/etc/rc" },
1606   { S_IFREG, "/etc/rc.subr" },
1607   { S_IFREG, "/etc/rc.conf" },
1608   { S_IFDIR, "/dev" },
1609   { S_IFCHR, "/dev/console" },
1610 /* XXX check for rootdev in target /dev? */
1611   { S_IFREG, "/sbin/fsck" },
1612   { S_IFREG, "/sbin/fsck_ffs" },
1613   { S_IFREG, "/sbin/mount" },
1614   { S_IFREG, "/sbin/mount_ffs" },
1615   { S_IFREG, "/sbin/mount_nfs" },
1616 #if defined(DEBUG) || defined(DEBUG_CHECK)
1617   { S_IFREG, "/foo/bar" },		/* bad entry to exercise warning */
1618 #endif
1619   { 0, 0 }
1620 
1621 };
1622 
1623 /*
1624  * Check target for a single file.
1625  */
1626 static int
1627 check_for(unsigned int mode, const char *pathname)
1628 {
1629 	int found;
1630 
1631 	found = (target_test(mode, pathname) == 0);
1632 	if (found == 0)
1633 		msg_fmt_display(MSG_rootmissing, "%s", pathname);
1634 	return found;
1635 }
1636 
1637 /*
1638  * Check that all the files in check_table are present in the
1639  * target root. Warn if not found.
1640  */
1641 int
1642 sanity_check(void)
1643 {
1644 	int target_ok = 1;
1645 	struct check_table *p;
1646 
1647 	for (p = checks; p->path; p++) {
1648 		target_ok = target_ok && check_for(p->mode, p->path);
1649 	}
1650 	if (target_ok)
1651 		return 0;
1652 
1653 	/* Uh, oh. Something's missing. */
1654 	hit_enter_to_continue(MSG_badroot, NULL);
1655 	return 1;
1656 }
1657 
1658 /*
1659  * Some globals to pass things back from callbacks
1660  */
1661 static char zoneinfo_dir[STRSIZE];
1662 static int zonerootlen;
1663 static char *tz_selected;	/* timezonename (relative to share/zoneinfo */
1664 const char *tz_default;		/* UTC, or whatever /etc/localtime points to */
1665 static char tz_env[STRSIZE];
1666 static int save_cursel, save_topline;
1667 static int time_menu = -1;
1668 
1669 static void
1670 update_time_display(void)
1671 {
1672 	time_t t;
1673 	struct tm *tm;
1674 	char cur_time[STRSIZE], *p;
1675 
1676 	t = time(NULL);
1677 	tm = localtime(&t);
1678 	strlcpy(cur_time, safectime(&t), sizeof cur_time);
1679 	p = strchr(cur_time, '\n');
1680 	if (p != NULL)
1681 		*p = 0;
1682 
1683 	msg_clear();
1684 	msg_fmt_table_add(MSG_choose_timezone, "%s%s%s%s",
1685 	    tz_default, tz_selected, cur_time, tm ? tm->tm_zone : "?");
1686 }
1687 
1688 /*
1689  * Callback from timezone menu
1690  */
1691 static int
1692 set_tz_select(menudesc *m, void *arg)
1693 {
1694 	char *new;
1695 
1696 	if (m && strcmp(tz_selected, m->opts[m->cursel].opt_name) != 0) {
1697 		/* Change the displayed timezone */
1698 		new = strdup(m->opts[m->cursel].opt_name);
1699 		if (new == NULL)
1700 			return 0;
1701 		free(tz_selected);
1702 		tz_selected = new;
1703 		snprintf(tz_env, sizeof tz_env, "%.*s%s",
1704 			 zonerootlen, zoneinfo_dir, tz_selected);
1705 		setenv("TZ", tz_env, 1);
1706 	}
1707 	if (m)
1708 		/* Warp curser to 'Exit' line on menu */
1709 		m->cursel = -1;
1710 
1711 	update_time_display();
1712 	if (time_menu >= 1) {
1713 		WINDOW *w = get_menudesc(time_menu)->mw;
1714 		if (w != NULL) {
1715 			touchwin(w);
1716 			wrefresh(w);
1717 		}
1718 	}
1719 	return 0;
1720 }
1721 
1722 static int
1723 set_tz_back(menudesc *m, void *arg)
1724 {
1725 
1726 	zoneinfo_dir[zonerootlen] = 0;
1727 	m->cursel = save_cursel;
1728 	m->topline = save_topline;
1729 	return 0;
1730 }
1731 
1732 static int
1733 set_tz_dir(menudesc *m, void *arg)
1734 {
1735 
1736 	strlcpy(zoneinfo_dir + zonerootlen, m->opts[m->cursel].opt_name,
1737 		sizeof zoneinfo_dir - zonerootlen);
1738 	save_cursel = m->cursel;
1739 	save_topline = m->topline;
1740 	m->cursel = 0;
1741 	m->topline = 0;
1742 	return 0;
1743 }
1744 
1745 /*
1746  * Alarm-handler to update example-display
1747  */
1748 static void
1749 /*ARGSUSED*/
1750 timezone_sig(int sig)
1751 {
1752 
1753 	set_tz_select(NULL, NULL);
1754 	alarm(60);
1755 }
1756 
1757 static int
1758 tz_sort(const void *a, const void *b)
1759 {
1760 	return strcmp(((const menu_ent *)a)->opt_name, ((const menu_ent *)b)->opt_name);
1761 }
1762 
1763 static void
1764 tzm_set_names(menudesc *m, void *arg)
1765 {
1766 	DIR *dir;
1767 	struct dirent *dp;
1768 	static int nfiles;
1769 	static int maxfiles = 32;
1770 	static menu_ent *tz_menu;
1771 	static char **tz_names;
1772 	void *p;
1773 	int maxfname;
1774 	char *fp;
1775 	struct stat sb;
1776 
1777 	if (tz_menu == NULL)
1778 		tz_menu = calloc(maxfiles, sizeof *tz_menu);
1779 	if (tz_names == NULL)
1780 		tz_names = malloc(maxfiles * sizeof *tz_names);
1781 	if (tz_menu == NULL || tz_names == NULL)
1782 		return;	/* error - skip timezone setting */
1783 	while (nfiles > 0)
1784 		free(tz_names[--nfiles]);
1785 
1786 	dir = opendir(zoneinfo_dir);
1787 	fp = strchr(zoneinfo_dir, 0);
1788 	if (fp != zoneinfo_dir + zonerootlen) {
1789 		tz_names[0] = 0;
1790 		tz_menu[0].opt_name = msg_string(MSG_tz_back);
1791 		tz_menu[0].opt_action = set_tz_back;
1792 		nfiles = 1;
1793 	}
1794 	maxfname = zoneinfo_dir + sizeof zoneinfo_dir - fp - 1;
1795 	if (dir != NULL) {
1796 		while ((dp = readdir(dir)) != NULL) {
1797 			if (dp->d_namlen > maxfname || dp->d_name[0] == '.')
1798 				continue;
1799 			strlcpy(fp, dp->d_name, maxfname);
1800 			if (stat(zoneinfo_dir, &sb) == -1)
1801 				continue;
1802 			if (nfiles >= maxfiles) {
1803 				p = realloc(tz_menu,
1804 				    2 * maxfiles * sizeof *tz_menu);
1805 				if (p == NULL)
1806 					break;
1807 				tz_menu = p;
1808 				memset(tz_menu + maxfiles, 0,
1809 				    maxfiles * sizeof *tz_menu);
1810 				p = realloc(tz_names,
1811 				    2 * maxfiles * sizeof *tz_names);
1812 				if (p == NULL)
1813 					break;
1814 				tz_names = p;
1815 				memset(tz_names + maxfiles, 0,
1816 				    maxfiles * sizeof *tz_names);
1817 				maxfiles *= 2;
1818 			}
1819 			if (S_ISREG(sb.st_mode))
1820 				tz_menu[nfiles].opt_action = set_tz_select;
1821 			else if (S_ISDIR(sb.st_mode)) {
1822 				tz_menu[nfiles].opt_action = set_tz_dir;
1823 				strlcat(fp, "/",
1824 				    sizeof(zoneinfo_dir) - (fp - zoneinfo_dir));
1825 			} else
1826 				continue;
1827 			tz_names[nfiles] = strdup(zoneinfo_dir + zonerootlen);
1828 			tz_menu[nfiles].opt_name = tz_names[nfiles];
1829 			nfiles++;
1830 		}
1831 		closedir(dir);
1832 	}
1833 	*fp = 0;
1834 
1835 	m->opts = tz_menu;
1836 	m->numopts = nfiles;
1837 	qsort(tz_menu, nfiles, sizeof *tz_menu, tz_sort);
1838 }
1839 
1840 void
1841 get_tz_default(void)
1842 {
1843 	char localtime_link[STRSIZE];
1844 	static char localtime_target[STRSIZE];
1845 	int rc;
1846 
1847 	strlcpy(localtime_link, target_expand("/etc/localtime"),
1848 	    sizeof localtime_link);
1849 
1850 	/* Add sanity check that /mnt/usr/share/zoneinfo contains
1851 	 * something useful
1852 	 */
1853 
1854 	rc = readlink(localtime_link, localtime_target,
1855 		      sizeof(localtime_target) - 1);
1856 	if (rc < 0) {
1857 		/* error, default to UTC */
1858 		tz_default = "UTC";
1859 	} else {
1860 		localtime_target[rc] = '\0';
1861 		tz_default = strchr(strstr(localtime_target, "zoneinfo"), '/') + 1;
1862 	}
1863 }
1864 
1865 /*
1866  * Choose from the files in usr/share/zoneinfo and set etc/localtime
1867  */
1868 int
1869 set_timezone(void)
1870 {
1871 	char localtime_link[STRSIZE];
1872 	char localtime_target[STRSIZE];
1873 	int menu_no;
1874 
1875 	strlcpy(zoneinfo_dir, target_expand("/usr/share/zoneinfo/"),
1876 	    sizeof zoneinfo_dir - 1);
1877 	zonerootlen = strlen(zoneinfo_dir);
1878 
1879 	get_tz_default();
1880 
1881 	tz_selected = strdup(tz_default);
1882 	snprintf(tz_env, sizeof(tz_env), "%s%s", zoneinfo_dir, tz_selected);
1883 	setenv("TZ", tz_env, 1);
1884 	update_time_display();
1885 
1886 	signal(SIGALRM, timezone_sig);
1887 	alarm(60);
1888 
1889 	menu_no = new_menu(NULL, NULL, 14, 23, 9,
1890 			   12, 32, MC_ALWAYS_SCROLL | MC_NOSHORTCUT,
1891 			   tzm_set_names, NULL, NULL,
1892 			   "\nPlease consult the install documents.",
1893 			   MSG_exit_menu_generic);
1894 	if (menu_no >= 0) {
1895 		time_menu = menu_no;
1896 		process_menu(menu_no, NULL);
1897 		time_menu = -1;
1898 
1899 		free_menu(menu_no);
1900 	}
1901 
1902 	alarm(0);
1903 	signal(SIGALRM, SIG_IGN);
1904 
1905 	if (menu_no >= 0) {
1906 		snprintf(localtime_target, sizeof(localtime_target),
1907 			 "/usr/share/zoneinfo/%s", tz_selected);
1908 		strlcpy(localtime_link, target_expand("/etc/localtime"),
1909 		    sizeof localtime_link);
1910 		unlink(localtime_link);
1911 		symlink(localtime_target, localtime_link);
1912 	}
1913 
1914 	return 1;
1915 }
1916 
1917 void
1918 scripting_vfprintf(FILE *f, const char *fmt, va_list ap)
1919 {
1920 	va_list ap2;
1921 
1922 	va_copy(ap2, ap);
1923 	if (f)
1924 		(void)vfprintf(f, fmt, ap);
1925 	if (script)
1926 		(void)vfprintf(script, fmt, ap2);
1927 }
1928 
1929 void
1930 scripting_fprintf(FILE *f, const char *fmt, ...)
1931 {
1932 	va_list ap;
1933 
1934 	va_start(ap, fmt);
1935 	scripting_vfprintf(f, fmt, ap);
1936 	va_end(ap);
1937 }
1938 
1939 void
1940 add_rc_conf(const char *fmt, ...)
1941 {
1942 	FILE *f;
1943 	va_list ap;
1944 
1945 	va_start(ap, fmt);
1946 	f = target_fopen("/etc/rc.conf", "a");
1947 	if (f != 0) {
1948 		scripting_fprintf(NULL, "cat <<EOF >>%s/etc/rc.conf\n",
1949 		    target_prefix());
1950 		scripting_vfprintf(f, fmt, ap);
1951 		fclose(f);
1952 		scripting_fprintf(NULL, "EOF\n");
1953 	}
1954 	va_end(ap);
1955 }
1956 
1957 int
1958 del_rc_conf(const char *value)
1959 {
1960 	FILE *fp, *nfp;
1961 	char buf[4096]; /* Ridiculously high, but should be enough in any way */
1962 	char *rcconf, *tempname = NULL, *bakname = NULL;
1963 	char *cp;
1964 	int done = 0;
1965 	int fd;
1966 	int retval = 0;
1967 
1968 	/* The paths might seem strange, but using /tmp would require copy instead
1969 	 * of rename operations. */
1970 	if (asprintf(&rcconf, "%s", target_expand("/etc/rc.conf")) < 0
1971 			|| asprintf(&tempname, "%s", target_expand("/etc/rc.conf.tmp.XXXXXX")) < 0
1972 			|| asprintf(&bakname, "%s", target_expand("/etc/rc.conf.bak.XXXXXX")) < 0) {
1973 		if (rcconf)
1974 			free(rcconf);
1975 		if (tempname)
1976 			free(tempname);
1977 		msg_fmt_display(MSG_rcconf_delete_failed, "%s", value);
1978 		hit_enter_to_continue(NULL, NULL);
1979 		return -1;
1980 	}
1981 
1982 	if ((fd = mkstemp(bakname)) < 0) {
1983 		msg_fmt_display(MSG_rcconf_delete_failed, "%s", value);
1984 		hit_enter_to_continue(NULL, NULL);
1985 		return -1;
1986 	}
1987 	close(fd);
1988 
1989 	if (!(fp = fopen(rcconf, "r+")) || (fd = mkstemp(tempname)) < 0) {
1990 		if (fp)
1991 			fclose(fp);
1992 		msg_fmt_display(MSG_rcconf_delete_failed, "%s", value);
1993 		hit_enter_to_continue(NULL, NULL);
1994 		return -1;
1995 	}
1996 
1997 	nfp = fdopen(fd, "w");
1998 	if (!nfp) {
1999 		fclose(fp);
2000 		close(fd);
2001 		msg_fmt_display(MSG_rcconf_delete_failed, "%s", value);
2002 		hit_enter_to_continue(NULL, NULL);
2003 		return -1;
2004 	}
2005 
2006 	while (fgets(buf, sizeof buf, fp) != NULL) {
2007 
2008 		cp = buf + strspn(buf, " \t"); /* Skip initial spaces */
2009 		if (strncmp(cp, value, strlen(value)) == 0) {
2010 			cp += strlen(value);
2011 			if (*cp != '=')
2012 				scripting_fprintf(nfp, "%s", buf);
2013 			else
2014 				done = 1;
2015 		} else {
2016 			scripting_fprintf(nfp, "%s", buf);
2017 		}
2018 	}
2019 	fclose(fp);
2020 	fclose(nfp);
2021 
2022 	if (done) {
2023 		if (rename(rcconf, bakname)) {
2024 			msg_display(MSG_rcconf_backup_failed);
2025 			if (!ask_noyes(NULL)) {
2026 				retval = -1;
2027 				goto done;
2028 			}
2029 		}
2030 
2031 		if (rename(tempname, rcconf)) {
2032 			if (rename(bakname, rcconf)) {
2033 				hit_enter_to_continue(MSG_rcconf_restore_failed,
2034 				    NULL);
2035 			} else {
2036 				hit_enter_to_continue(MSG_rcconf_delete_failed,
2037 				    NULL);
2038 			}
2039 		} else {
2040 			(void)unlink(bakname);
2041 		}
2042 	}
2043 
2044 done:
2045 	(void)unlink(tempname);
2046 	free(rcconf);
2047 	free(tempname);
2048 	free(bakname);
2049 	return retval;
2050 }
2051 
2052 void
2053 add_sysctl_conf(const char *fmt, ...)
2054 {
2055 	FILE *f;
2056 	va_list ap;
2057 
2058 	va_start(ap, fmt);
2059 	f = target_fopen("/etc/sysctl.conf", "a");
2060 	if (f != 0) {
2061 		scripting_fprintf(NULL, "cat <<EOF >>%s/etc/sysctl.conf\n",
2062 		    target_prefix());
2063 		scripting_vfprintf(f, fmt, ap);
2064 		fclose(f);
2065 		scripting_fprintf(NULL, "EOF\n");
2066 	}
2067 	va_end(ap);
2068 }
2069 
2070 void
2071 enable_rc_conf(void)
2072 {
2073 
2074 	replace("/etc/rc.conf", "s/^rc_configured=NO/rc_configured=YES/");
2075 }
2076 
2077 int
2078 check_lfs_progs(void)
2079 {
2080 
2081 #ifndef NO_LFS
2082 	return binary_available("fsck_lfs") && binary_available("mount_lfs")
2083 	    && binary_available("newfs_lfs");
2084 #else
2085 	return 0;
2086 #endif
2087 }
2088 
2089 int
2090 set_is_source(const char *set_name) {
2091 	int len = strlen(set_name);
2092 	return len >= 3 && memcmp(set_name + len - 3, "src", 3) == 0;
2093 }
2094 
2095 const char *
2096 set_dir_for_set(const char *set_name) {
2097 	if (strcmp(set_name, "pkgsrc") == 0)
2098 		return pkgsrc_dir;
2099 	return set_is_source(set_name) ? set_dir_src : set_dir_bin;
2100 }
2101 
2102 const char *
2103 ext_dir_for_set(const char *set_name) {
2104 	if (strcmp(set_name, "pkgsrc") == 0)
2105 		return ext_dir_pkgsrc;
2106 	return set_is_source(set_name) ? ext_dir_src : ext_dir_bin;
2107 }
2108 
2109 void
2110 do_coloring(unsigned int fg, unsigned int bg) {
2111 	if (bg > COLOR_WHITE)
2112 		bg = COLOR_BLUE;
2113 	if (fg > COLOR_WHITE)
2114 		fg = COLOR_WHITE;
2115 	if (fg != bg && has_colors()) {
2116 		init_pair(1, fg, bg);
2117 		wbkgd(stdscr, COLOR_PAIR(1));
2118 		wbkgd(mainwin, COLOR_PAIR(1));
2119 		wattrset(stdscr, COLOR_PAIR(1));
2120 		wattrset(mainwin, COLOR_PAIR(1));
2121 	}
2122 	/* redraw screen */
2123 	touchwin(stdscr);
2124 	touchwin(mainwin);
2125 	wrefresh(stdscr);
2126 	wrefresh(mainwin);
2127 	return;
2128 }
2129 
2130 int
2131 set_menu_select(menudesc *m, void *arg)
2132 {
2133 	*(int *)arg = m->cursel;
2134 	return 1;
2135 }
2136 
2137 /*
2138  * check whether a binary is available somewhere in PATH,
2139  * return 1 if found, 0 if not.
2140  */
2141 static int
2142 binary_available(const char *prog)
2143 {
2144         char *p, tmp[MAXPATHLEN], *path = getenv("PATH"), *opath;
2145 
2146         if (path == NULL)
2147                 return access(prog, X_OK) == 0;
2148         path = strdup(path);
2149         if (path == NULL)
2150                 return 0;
2151 
2152 	opath = path;
2153 
2154         while ((p = strsep(&path, ":")) != NULL) {
2155                 if (strlcpy(tmp, p, MAXPATHLEN) >= MAXPATHLEN)
2156                         continue;
2157                 if (strlcat(tmp, "/", MAXPATHLEN) >= MAXPATHLEN)
2158                         continue;
2159                 if (strlcat(tmp, prog, MAXPATHLEN) >= MAXPATHLEN)
2160                         continue;
2161                 if (access(tmp, X_OK) == 0) {
2162                         free(opath);
2163                         return 1;
2164                 }
2165         }
2166         free(opath);
2167         return 0;
2168 }
2169 
2170 const char *
2171 safectime(time_t *t)
2172 {
2173 	const char *s = ctime(t);
2174 	if (s != NULL)
2175 		return s;
2176 
2177 	// Debugging.
2178 	fprintf(stderr, "Can't convert to localtime 0x%jx (%s)\n",
2179 	    (intmax_t)*t, strerror(errno));
2180 	      /*123456789012345678901234*/
2181 	return "preposterous clock time\n";
2182 }
2183 
2184 int
2185 ask_yesno(const char* msgtxt)
2186 {
2187 	arg_rv p;
2188 
2189 	p.arg = __UNCONST(msgtxt);
2190 	p.rv = -1;
2191 
2192 	process_menu(MENU_yesno, &p);
2193 	return p.rv;
2194 }
2195 
2196 int
2197 ask_noyes(const char *msgtxt)
2198 {
2199 	arg_rv p;
2200 
2201 	p.arg = __UNCONST(msgtxt);
2202 	p.rv = -1;
2203 
2204 	process_menu(MENU_noyes, &p);
2205 	return p.rv;
2206 }
2207 
2208 int
2209 ask_reedit(const struct disk_partitions *parts)
2210 {
2211 	const char *args[2];
2212 	arg_rep_int arg;
2213 
2214 	args[0] = msg_string(parts->pscheme->name);
2215 	args[1] = msg_string(parts->pscheme->short_name);
2216 	arg.args.argv = args;
2217 	arg.args.argc = 2;
2218 	arg.rv = 0;
2219 	process_menu(MENU_reedit, &arg);
2220 
2221 	return arg.rv;
2222 }
2223 
2224 bool
2225 use_tgz_for_set(const char *set_name)
2226 {
2227 	const struct distinfo *dist;
2228 
2229 	for (dist = dist_list; dist->set != SET_LAST; dist++) {
2230 		if (dist->name == NULL)
2231 			continue;
2232 		if (strcmp(set_name, dist->name) == 0)
2233 			return dist->force_tgz;
2234 	}
2235 
2236 	return true;
2237 }
2238 
2239 /* Return the postfix used for a given set */
2240 const char *
2241 set_postfix(const char *set_name)
2242 {
2243 	return use_tgz_for_set(set_name) ? dist_tgz_postfix : dist_postfix;
2244 }
2245 
2246 /*
2247  * Replace positional arguments (encoded as $0 .. $N) in the string
2248  * passed by the contents of the passed argument array.
2249  * Caller must free() the result string.
2250  */
2251 char*
2252 str_arg_subst(const char *src, size_t argc, const char **argv)
2253 {
2254 	const char *p, *last;
2255 	char *out, *t;
2256 	size_t len;
2257 
2258 	len = strlen(src);
2259 	for (p = strchr(src, '$'); p; p = strchr(p+1, '$')) {
2260 		char *endp = NULL;
2261 		size_t n;
2262 		int e;
2263 
2264 		/* $ followed by a correct numeric position? */
2265 		n = strtou(p+1, &endp, 10, 0, INT_MAX, &e);
2266 		if ((e == 0 || e == ENOTSUP) && n < argc) {
2267 			len += strlen(argv[n]);
2268 			len -= endp-p;
2269 			p = endp-1;
2270 		}
2271 	}
2272 
2273 	out = malloc(len+1);
2274 	if (out == NULL)
2275 		return NULL;
2276 
2277 	t = out;
2278 	for (last = src, p = strchr(src, '$'); p; p = strchr(p+1, '$')) {
2279 		char *endp = NULL;
2280 		size_t n;
2281 		int e;
2282 
2283 		/* $ followed by a correct numeric position? */
2284 		n = strtou(p+1, &endp, 10, 0, INT_MAX, &e);
2285 		if ((e == 0 || e == ENOTSUP) && n < argc) {
2286 			size_t l = p-last;
2287 			memcpy(t, last, l);
2288 			t += l;
2289 			strcpy(t, argv[n]);
2290 			t += strlen(argv[n]);
2291 			last = endp;
2292 		}
2293 	}
2294 	if (*last) {
2295 		strcpy(t, last);
2296 		t += strlen(last);
2297 	} else {
2298 		*t = 0;
2299 	}
2300 	assert((size_t)(t-out) == len);
2301 
2302 	return out;
2303 }
2304 
2305 /*
2306  * Does this string have any positional args that need expanding?
2307  */
2308 bool
2309 needs_expanding(const char *src, size_t argc)
2310 {
2311 	const char *p;
2312 
2313 	for (p = strchr(src, '$'); p; p = strchr(p+1, '$')) {
2314 		char *endp = NULL;
2315 		size_t n;
2316 		int e;
2317 
2318 		/* $ followed by a correct numeric position? */
2319 		n = strtou(p+1, &endp, 10, 0, INT_MAX, &e);
2320 		if ((e == 0 || e == ENOTSUP) && n < argc)
2321 			return true;
2322 	}
2323 	return false;
2324 }
2325 
2326 /*
2327  * Replace positional arguments (encoded as $0 .. $N) in the
2328  * message by the strings passed as ... and call outfunc
2329  * with the result.
2330  */
2331 static void
2332 msg_display_subst_internal(void (*outfunc)(msg),
2333     const char *master, size_t argc, va_list ap)
2334 {
2335 	const char **args, **arg;
2336 	char *out;
2337 
2338 	args = calloc(argc, sizeof(*args));
2339 	if (args == NULL)
2340 		return;
2341 
2342 	arg = args;
2343 	for (size_t i = 0; i < argc; i++)
2344 		*arg++ = va_arg(ap, const char*);
2345 
2346 	out = str_arg_subst(msg_string(master), argc, args);
2347 	if (out != NULL) {
2348 		outfunc(out);
2349 		free(out);
2350 	}
2351 	free(args);
2352 }
2353 
2354 /*
2355  * Replace positional arguments (encoded as $0 .. $N) in the
2356  * message by the strings passed as ...
2357  */
2358 void
2359 msg_display_subst(const char *master, size_t argc, ...)
2360 {
2361 	va_list ap;
2362 
2363 	va_start(ap, argc);
2364 	msg_display_subst_internal(msg_display, master, argc, ap);
2365 	va_end(ap);
2366 }
2367 
2368 /*
2369  * Same as above, but add to message instead of starting a new one
2370  */
2371 void
2372 msg_display_add_subst(const char *master, size_t argc, ...)
2373 {
2374 	va_list ap;
2375 
2376 	va_start(ap, argc);
2377 	msg_display_subst_internal(msg_display_add, master, argc, ap);
2378 	va_end(ap);
2379 }
2380 
2381 /* initialize have_* variables */
2382 void
2383 check_available_binaries(void)
2384 {
2385 	static int did_test = false;
2386 
2387 	if (did_test) return;
2388 	did_test = 1;
2389 
2390 	have_raid = binary_available("raidctl");
2391 	have_vnd = binary_available("vndconfig");
2392 	have_cgd = binary_available("cgdconfig");
2393 	have_lvm = binary_available("lvm");
2394 	have_gpt = binary_available("gpt");
2395 	have_dk = binary_available("dkctl");
2396 }
2397 
2398 /*
2399  * Wait for enter and immediately clear the screen after user response
2400  * (in case some longer action follows, so the user has instant feedback)
2401  */
2402 void
2403 hit_enter_to_continue(const char *prompt, const char *title)
2404 {
2405 	if (prompt != NULL)
2406 		msg_display(prompt);
2407         process_menu(MENU_ok, __UNCONST(title));
2408 	msg_clear();
2409 	wrefresh(mainwin);
2410 }
2411 
2412 /*
2413  * On auto pilot:
2414  * convert an existing set of partitions ot a list of part_usage_info
2415  * so that we "want" exactly what is there already.
2416  */
2417 static bool
2418 usage_info_list_from_parts(struct part_usage_info **list, size_t *count,
2419     struct disk_partitions *parts)
2420 {
2421 	struct disk_part_info info;
2422 	part_id pno;
2423 	size_t no, num;
2424 
2425 	num = 0;
2426 	for (pno = 0; pno < parts->num_part; pno++) {
2427 		if (!parts->pscheme->get_part_info(parts, pno, &info))
2428 			continue;
2429 		num++;
2430 	}
2431 
2432 	*list = calloc(num, sizeof(**list));
2433 	if (*list == NULL)
2434 		return false;
2435 
2436 	*count = num;
2437 	for (no = pno = 0; pno < parts->num_part && no < num; pno++) {
2438 		if (!parts->pscheme->get_part_info(parts, pno, &info))
2439 			continue;
2440 		(*list)[no].size = info.size;
2441 		if (info.last_mounted != NULL && *info.last_mounted != 0) {
2442 			strlcpy((*list)[no].mount, info.last_mounted,
2443 			    sizeof((*list)[no].mount));
2444 			(*list)[no].instflags |= PUIINST_MOUNT;
2445 		}
2446 		(*list)[no].parts = parts;
2447 		(*list)[no].cur_part_id = pno;
2448 		(*list)[no].cur_start = info.start;
2449 		(*list)[no].cur_flags = info.flags;
2450 		(*list)[no].type = info.nat_type->generic_ptype;
2451 		if ((*list)[no].type == PT_swap) {
2452 			(*list)[no].fs_type = FS_SWAP;
2453 			(*list)[no].fs_version = 0;
2454 		} else {
2455 			(*list)[no].fs_type = info.fs_type;
2456 			(*list)[no].fs_version = info.fs_sub_type;
2457 		}
2458 		(*list)[no].fs_opt1 = info.fs_opt1;
2459 		(*list)[no].fs_opt2 = info.fs_opt2;
2460 		(*list)[no].fs_opt3 = info.fs_opt3;
2461 		no++;
2462 	}
2463 	return true;
2464 }
2465 
2466 bool
2467 empty_usage_set_from_parts(struct partition_usage_set *wanted,
2468     struct disk_partitions *parts)
2469 {
2470 	usage_set_from_parts(wanted, parts);
2471 	return true;
2472 }
2473 
2474 bool
2475 usage_set_from_parts(struct partition_usage_set *wanted,
2476     struct disk_partitions *parts)
2477 {
2478 	memset(wanted, 0, sizeof(*wanted));
2479 	wanted->parts = parts;
2480 
2481 	return usage_info_list_from_parts(&wanted->infos, &wanted->num, parts);
2482 }
2483 
2484 bool
2485 usage_set_from_install_desc(struct partition_usage_set *pset,
2486     const struct install_partition_desc *install,
2487     struct disk_partitions *parts)
2488 {
2489 	size_t cnt, i;
2490 
2491 	memset(pset, 0, sizeof(*pset));
2492 	pset->parts = parts;
2493 
2494 	if (!install->infos || !install->num)
2495 		return false;
2496 
2497 	for (cnt = 0, i = 0; i < install->num; i++) {
2498 		if (install->infos[i].parts != parts)
2499 			continue;
2500 		cnt++;
2501 	}
2502 	if (!cnt)
2503 		return false;
2504 	pset->num = cnt;
2505 	pset->infos = calloc(cnt, sizeof(*pset->infos));
2506 	if (!pset->infos)
2507 		return false;
2508 	for (cnt = 0, i = 0; i < install->num; i++) {
2509 		if (install->infos[i].parts != parts)
2510 			continue;
2511 		pset->infos[cnt] = install->infos[i];
2512 		cnt++;
2513 	}
2514 	return true;
2515 }
2516 
2517 bool
2518 merge_usage_set_into_install_desc(struct install_partition_desc *install,
2519     const struct partition_usage_set *pset)
2520 {
2521 	// XXX
2522 	return false;
2523 }
2524 
2525 struct disk_partitions *
2526 get_inner_parts(struct disk_partitions *parts)
2527 {
2528 	daddr_t start, size;
2529 	part_id pno;
2530 	struct disk_part_info info;
2531 
2532 	if (parts->pscheme->secondary_scheme == NULL)
2533 		return NULL;
2534 
2535 	start = -1;
2536 	size = -1;
2537 	if (parts->pscheme->guess_install_target == NULL ||
2538 	    !parts->pscheme->guess_install_target(parts, &start, &size)) {
2539 		for (pno = 0; pno < parts->num_part; pno++) {
2540 			if (!parts->pscheme->get_part_info(parts, pno, &info))
2541 				continue;
2542 			if (!(info.flags & PTI_SEC_CONTAINER))
2543 				continue;
2544 			start = info.start;
2545 			size = info.size;
2546 		}
2547 	}
2548 
2549 	if (size > 0)
2550 		return parts->pscheme->secondary_partitions(parts, start,
2551 		    false);
2552 
2553 	return NULL;
2554 }
2555 
2556 bool
2557 install_desc_from_parts(struct install_partition_desc *install,
2558     struct disk_partitions *parts)
2559 {
2560 	struct disk_partitions *inner_parts;
2561 
2562 	memset(install, 0, sizeof(*install));
2563 	inner_parts = get_inner_parts(parts);
2564 	if (inner_parts != NULL)
2565 		parts = inner_parts;
2566 
2567 	return usage_info_list_from_parts(&install->infos, &install->num,
2568 	    parts);
2569 }
2570 
2571 void
2572 free_usage_set(struct partition_usage_set *wanted)
2573 {
2574 	/* XXX - free parts? free clone src? */
2575 	free(wanted->write_back);
2576 	free(wanted->menu_opts);
2577 	free(wanted->infos);
2578 }
2579 
2580 void
2581 free_install_desc(struct install_partition_desc *install)
2582 {
2583 	size_t i, j;
2584 
2585 #ifndef NO_CLONES
2586 	for (i = 0; i < install->num; i++) {
2587 		struct selected_partitions *src = install->infos[i].clone_src;
2588 		if (!(install->infos[i].flags & PUIFLG_CLONE_PARTS) ||
2589 		    src == NULL)
2590 			continue;
2591 		free_selected_partitions(src);
2592 		for (j = i+1; j < install->num; j++)
2593 			if (install->infos[j].clone_src == src)
2594 				install->infos[j].clone_src = NULL;
2595 	}
2596 #endif
2597 
2598 	for (i = 0; i < install->num; i++) {
2599 		struct disk_partitions * parts = install->infos[i].parts;
2600 
2601 		if (parts == NULL)
2602 			continue;
2603 
2604 		if (parts->pscheme->free)
2605 			parts->pscheme->free(parts);
2606 
2607 		/* NULL all other references to this parts */
2608 		for (j = i+1; j < install->num; j++)
2609 			if (install->infos[j].parts == parts)
2610 				install->infos[j].parts = NULL;
2611 	}
2612 
2613 	free(install->write_back);
2614 	free(install->infos);
2615 }
2616 
2617 #ifdef MD_MAY_SWAP_TO
2618 bool
2619 may_swap_if_not_sdmmc(const char *disk)
2620 {
2621 	int fd, res;
2622 	prop_dictionary_t command_dict, args_dict, results_dict, data_dict;
2623 	prop_string_t string;
2624 	prop_number_t number;
2625 	const char *parent = "";
2626 
2627 	fd = open(DRVCTLDEV, O_RDONLY, 0);
2628 	if (fd == -1)
2629 		return true;
2630 
2631 	command_dict = prop_dictionary_create();
2632 	args_dict = prop_dictionary_create();
2633 
2634 	string = prop_string_create_nocopy("get-properties");
2635 	prop_dictionary_set(command_dict, "drvctl-command", string);
2636 	prop_object_release(string);
2637 
2638 	string = prop_string_create_copy(disk);
2639 	prop_dictionary_set(args_dict, "device-name", string);
2640 	prop_object_release(string);
2641 
2642 	prop_dictionary_set(command_dict, "drvctl-arguments",
2643 	    args_dict);
2644 	prop_object_release(args_dict);
2645 
2646 	res = prop_dictionary_sendrecv_ioctl(command_dict, fd,
2647 	    DRVCTLCOMMAND, &results_dict);
2648 	prop_object_release(command_dict);
2649 	close(fd);
2650 	if (res)
2651 		return true;
2652 
2653 	number = prop_dictionary_get(results_dict, "drvctl-error");
2654 	if (prop_number_signed_value(number) == 0) {
2655 		data_dict = prop_dictionary_get(results_dict,
2656 		    "drvctl-result-data");
2657 		if (data_dict != NULL) {
2658 			string = prop_dictionary_get(data_dict,
2659 			    "device-parent");
2660 			if (string != NULL)
2661 				parent = prop_string_value(string);
2662 		}
2663 	}
2664 
2665 	prop_object_release(results_dict);
2666 
2667 	if (parent == NULL)
2668 		return true;
2669 
2670 	return strncmp(parent, "sdmmc", 5) != 0;
2671 }
2672 #endif
2673