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36 * Installer Function : Create Subpartitions.
37 * $Id: fn_subpart.c,v 1.50 2005/04/07 20:22:40 cpressey Exp $
46 #define _(String) gettext (String)
48 #define _(String) (String)
51 #include "libaura/mem.h"
52 #include "libaura/buffer.h"
53 #include "libaura/dict.h"
54 #include "libaura/fspred.h"
56 #include "libdfui/dfui.h"
57 #include "libdfui/dump.h"
58 #include "libdfui/system.h"
60 #include "libinstaller/commands.h"
61 #include "libinstaller/diskutil.h"
62 #include "libinstaller/functions.h"
63 #include "libinstaller/uiutil.h"
67 #include "pathnames.h"
69 static int create_subpartitions(struct i_fn_args *);
70 static long default_capacity(struct storage *, int);
71 static int check_capacity(struct i_fn_args *);
72 static int check_subpartition_selections(struct dfui_response *, struct i_fn_args *);
73 static void save_subpartition_selections(struct dfui_response *, struct i_fn_args *);
74 static void populate_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
75 static int warn_subpartition_selections(struct i_fn_args *);
76 static struct dfui_form *make_create_subpartitions_form(struct i_fn_args *);
77 static int show_create_subpartitions_form(struct dfui_form *, struct i_fn_args *);
79 static const char *def_mountpt[] = {"/", "swap", "/var", "/tmp", "/usr", "/home", NULL};
80 static int expert = 0;
83 * Given a set of subpartitions-to-be in the selected slice,
87 create_subpartitions(struct i_fn_args *a)
89 struct subpartition *sp;
90 struct commands *cmds;
94 cmds = commands_new();
95 if (!is_file("%sinstall.disklabel.%s",
97 slice_get_device_name(storage_get_selected_slice(a->s)))) {
99 * Get a copy of the 'virgin' disklabel.
100 * XXX It might make more sense for this to
101 * happen right after format_slice() instead.
103 command_add(cmds, "%s%s -r %s >%sinstall.disklabel.%s",
104 a->os_root, cmd_name(a, "DISKLABEL64"),
105 slice_get_device_name(storage_get_selected_slice(a->s)),
107 slice_get_device_name(storage_get_selected_slice(a->s)));
111 * Weave together a new disklabel out the of the 'virgin'
112 * disklabel, and the user's subpartition choices.
116 * Take everything from the 'virgin' disklabel up until the
117 * '16 partitions' line.
120 command_add(cmds, "%s%s '$2==\"partitions:\" || cut { cut = 1 } !cut { print $0 }' <%sinstall.disklabel.%s >%sinstall.disklabel",
121 a->os_root, cmd_name(a, "AWK"),
123 slice_get_device_name(storage_get_selected_slice(a->s)),
128 * # size offset fstype
129 * c: 16383969 0 unused # 7999.985MB
132 command_add(cmds, "%s%s '%d partitions:' >>%sinstall.disklabel",
133 a->os_root, cmd_name(a, "ECHO"), num_partitions ,a->tmp);
134 command_add(cmds, "%s%s '%s' >>%sinstall.disklabel",
135 a->os_root, cmd_name(a, "ECHO"),
136 "# size offset fstype",
140 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
141 sp != NULL; sp = subpartition_next(sp)) {
142 command_add(cmds, "%s%s 'mountpoint: %s device: %s'",
143 a->os_root, cmd_name(a, "ECHO"),
144 subpartition_get_mountpoint(sp),
145 subpartition_get_device_name(sp));
150 * Write a line for each subpartition the user wants.
152 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
153 sp != NULL; sp = subpartition_next(sp)) {
154 if (subpartition_is_mfsbacked(sp)) {
157 if (subpartition_is_swap(sp)) {
158 command_add(cmds, "%s%s ' %c:\t%s\t*\tswap' >>%sinstall.disklabel",
159 a->os_root, cmd_name(a, "ECHO"),
160 subpartition_get_letter(sp),
161 capacity_to_string(subpartition_get_capacity(sp)),
164 command_add(cmds, "%s%s ' %c:\t%s\t%s\t4.2BSD' >>%sinstall.disklabel",
165 a->os_root, cmd_name(a, "ECHO"),
166 subpartition_get_letter(sp),
167 capacity_to_string(subpartition_get_capacity(sp)),
168 subpartition_get_letter(sp) == 'a' ? "0" : "*",
172 temp_file_add(a, "install.disklabel");
175 * Label the slice from the disklabel we just wove together.
177 command_add(cmds, "%s%s -R -B -r %s %sinstall.disklabel",
178 a->os_root, cmd_name(a, "DISKLABEL64"),
179 slice_get_device_name(storage_get_selected_slice(a->s)),
183 * Create a snapshot of the disklabel we just created
184 * for debugging inspection in the log.
186 command_add(cmds, "%s%s %s",
187 a->os_root, cmd_name(a, "DISKLABEL64"),
188 slice_get_device_name(storage_get_selected_slice(a->s)));
191 * Create filesystems on the newly-created subpartitions.
193 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
194 sp != NULL; sp = subpartition_next(sp)) {
195 if (subpartition_is_swap(sp) || subpartition_is_mfsbacked(sp))
199 * Ensure that all the needed device nodes exist.
201 command_add_ensure_dev(a, cmds,
202 disk_get_device_name(storage_get_selected_disk(a->s)));
203 command_add_ensure_dev(a, cmds,
204 slice_get_device_name(storage_get_selected_slice(a->s)));
205 command_add_ensure_dev(a, cmds,
206 subpartition_get_device_name(sp));
208 command_add(cmds, "%s%s%s -b %ld -f %ld %sdev/%s",
209 a->os_root, cmd_name(a, "NEWFS"),
210 subpartition_is_softupdated(sp) ? " -U" : "",
211 subpartition_get_bsize(sp),
212 subpartition_get_fsize(sp),
214 subpartition_get_device_name(sp));
217 result = commands_execute(a, cmds);
223 default_capacity(struct storage *s, int mtpt)
226 unsigned long capacity;
229 if (mtpt == MTPT_HOME)
232 capacity = slice_get_capacity(storage_get_selected_slice(s));
233 mem = storage_get_memsize(s);
235 if (mem > (capacity / 2) || capacity < 4096)
242 if (capacity < DISK_MIN) {
244 * For the purposes of this installer:
245 * can't be done. Sorry.
248 } else if (capacity < 4096) {
250 case MTPT_ROOT: return(256);
251 case MTPT_SWAP: return(swap);
252 case MTPT_VAR: return(128);
253 case MTPT_TMP: return(128);
254 case MTPT_USR: return(1536);
256 } else if (capacity < 10240) {
258 case MTPT_ROOT: return(256);
259 case MTPT_SWAP: return(swap);
260 case MTPT_VAR: return(256);
261 case MTPT_TMP: return(256);
262 case MTPT_USR: return(3072);
266 case MTPT_ROOT: return(256);
267 case MTPT_SWAP: return(swap);
268 case MTPT_VAR: return(256);
269 case MTPT_TMP: return(256);
270 case MTPT_USR: return(8192);
273 /* shouldn't ever happen */
278 check_capacity(struct i_fn_args *a)
280 struct subpartition *sp;
281 unsigned long min_capacity[] = {256, 0, 16, 0, 1536, 0, 0};
282 unsigned long total_capacity = 0;
285 if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL)
286 min_capacity[MTPT_ROOT] += min_capacity[MTPT_USR];
288 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
289 sp != NULL; sp = subpartition_next(sp)) {
290 if (subpartition_get_capacity(sp) == -1)
293 total_capacity += subpartition_get_capacity(sp);
294 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
295 if (strcmp(subpartition_get_mountpoint(sp), def_mountpt[mtpt]) == 0 &&
296 min_capacity[mtpt] > 0 &&
297 subpartition_get_capacity(sp) < min_capacity[mtpt]) {
298 inform(a->c, _("WARNING: the %s subpartition should "
299 "be at least %dM in size or you will "
300 "risk running out of space during "
301 "the installation."),
302 subpartition_get_mountpoint(sp), min_capacity[mtpt]);
307 if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
308 inform(a->c, _("The space allocated to all of your selected "
309 "subpartitions (%dM) exceeds the total "
310 "capacity of the selected primary partition "
311 "(%dM). Remove some subpartitions or choose "
312 "a smaller size for them and try again."),
313 total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
321 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
323 struct dfui_dataset *ds;
324 struct dfui_dataset *star_ds = NULL;
326 const char *mountpoint, *capstring;
330 int softupdates, mfsbacked;
333 d = aura_dict_new(1, AURA_DICT_LIST);
335 if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
336 inform(a->c, _("Please set up at least one subpartition."));
340 for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
341 ds = dfui_dataset_get_next(ds)) {
343 dfui_dataset_dump(ds);
345 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
346 capstring = dfui_dataset_get_value(ds, "capacity");
350 (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
351 fsize = atol(dfui_dataset_get_value(ds, "fsize"));
352 bsize = atol(dfui_dataset_get_value(ds, "bsize"));
353 mfsbacked = (strcmp(dfui_dataset_get_value(ds, "mfsbacked"), "Y") == 0);
355 softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
356 mfsbacked = (strcmp(mountpoint, "/tmp") == 0 ? 0 : 1);
361 if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
362 inform(a->c, _("The same mount point cannot be specified "
363 "for two different subpartitions."));
367 if (strcmp(mountpoint, "/") == 0)
370 if (strcmp(capstring, "*") == 0) {
371 if (star_ds != NULL) {
372 inform(a->c, _("You cannot have more than one subpartition "
373 "with a '*' capacity (meaning 'use the remainder "
374 "of the primary partition'.)"));
381 if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
382 inform(a->c, _("Mount point must be either 'swap', or it must "
383 "start with a '/'."));
387 if (strpbrk(mountpoint, " \\\"'`") != NULL) {
388 inform(a->c, _("Mount point may not contain the following "
389 "characters: blank space, backslash, or "
390 "single, double, or back quotes."));
394 if (strlen(capstring) == 0) {
395 inform(a->c, _("A capacity must be specified."));
399 if (!string_to_capacity(capstring, &capacity)) {
400 inform(a->c, _("Capacity must be either a '*' symbol to indicate "
401 "'use the rest of the primary partition', or it "
402 "must be a series of decimal digits ending with a "
403 "'M' (indicating megabytes) or a 'G' (indicating "
408 if ((strcasecmp(mountpoint, "swap") == 0) && (capacity > 8192)) {
409 inform(a->c, _("Swap capacity is limited to 8G."));
414 * If we made it through that obstacle course, all is well.
418 aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
422 inform(a->c, _("You must include a / (root) subpartition."));
426 if (aura_dict_size(d) > 16) {
427 inform(a->c, _("You cannot have more than 16 subpartitions "
428 "on a single primary partition. Remove some "
439 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
441 struct dfui_dataset *ds;
443 const char *mountpoint, *capstring;
449 subpartitions_free(storage_get_selected_slice(a->s));
451 for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
452 ds = dfui_dataset_get_next(ds)) {
453 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
454 capstring = dfui_dataset_get_value(ds, "capacity");
458 (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
459 fsize = atol(dfui_dataset_get_value(ds, "fsize"));
460 bsize = atol(dfui_dataset_get_value(ds, "bsize"));
461 mfsbacked = (strcmp(dfui_dataset_get_value(ds, "mfsbacked"), "Y") == 0);
463 softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
469 if (string_to_capacity(capstring, &capacity)) {
470 subpartition_new(storage_get_selected_slice(a->s), mountpoint, capacity,
471 softupdates, fsize, bsize, mfsbacked);
477 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
479 struct subpartition *sp;
480 struct dfui_dataset *ds;
485 if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
487 * The user has already given us their subpartition
488 * preferences, so use them here.
490 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
491 sp != NULL; sp = subpartition_next(sp)) {
492 ds = dfui_dataset_new();
493 dfui_dataset_celldata_add(ds, "mountpoint",
494 subpartition_get_mountpoint(sp));
495 dfui_dataset_celldata_add(ds, "capacity",
496 capacity_to_string(subpartition_get_capacity(sp)));
498 dfui_dataset_celldata_add(ds, "softupdates",
499 subpartition_is_softupdated(sp) ? "Y" : "N");
500 dfui_dataset_celldata_add(ds, "mfsbacked",
501 subpartition_is_mfsbacked(sp) ? "Y" : "N");
502 snprintf(temp, 32, "%ld", subpartition_get_fsize(sp));
503 dfui_dataset_celldata_add(ds, "fsize",
505 snprintf(temp, 32, "%ld", subpartition_get_bsize(sp));
506 dfui_dataset_celldata_add(ds, "bsize",
509 dfui_form_dataset_add(f, ds);
513 * Otherwise, populate the form with datasets representing
514 * reasonably-calculated defaults. The defaults are chosen
515 * based on the slice's total capacity and the machine's
516 * total physical memory (for swap.)
518 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
519 capacity = default_capacity(a->s, mtpt);
520 ds = dfui_dataset_new();
521 dfui_dataset_celldata_add(ds, "mountpoint",
523 dfui_dataset_celldata_add(ds, "capacity",
524 capacity_to_string(capacity));
526 dfui_dataset_celldata_add(ds, "softupdates",
527 strcmp(def_mountpt[mtpt], "/") != 0 ? "Y" : "N");
528 dfui_dataset_celldata_add(ds, "mfsbacked",
530 dfui_dataset_celldata_add(ds, "fsize",
531 capacity < 1024 ? "1024" : "2048");
532 dfui_dataset_celldata_add(ds, "bsize",
533 capacity < 1024 ? "8192" : "16384");
535 dfui_form_dataset_add(f, ds);
541 warn_subpartition_selections(struct i_fn_args *a)
544 struct aura_buffer *omit, *consequences;
546 omit = aura_buffer_new(2048);
547 consequences = aura_buffer_new(2048);
549 valid = check_capacity(a);
550 if (subpartition_find(storage_get_selected_slice(a->s), "/var") == NULL) {
551 aura_buffer_cat(omit, "/var ");
552 aura_buffer_cat(consequences, _("/var will be a plain dir in /\n"));
554 if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL) {
555 aura_buffer_cat(omit, "/usr ");
556 aura_buffer_cat(consequences, _("/usr will be a plain dir in /\n"));
558 if (subpartition_find(storage_get_selected_slice(a->s), "/tmp") == NULL) {
559 aura_buffer_cat(omit, "/tmp ");
560 aura_buffer_cat(consequences, _("/tmp will be symlinked to /var/tmp\n"));
562 if (subpartition_find(storage_get_selected_slice(a->s), "/home") == NULL) {
563 aura_buffer_cat(omit, "/home ");
564 aura_buffer_cat(consequences, _("/home will be symlinked to /usr/home\n"));
567 if (valid && aura_buffer_len(omit) > 0) {
568 switch (dfui_be_present_dialog(a->c, _("Really omit?"),
569 _("Omit Subpartition(s)|Return to Create Subpartitions"),
570 _("You have elected to not have the following "
571 "subpartition(s):\n\n%s\n\n"
572 "The ramifications of these subpartition(s) being "
573 "missing will be:\n\n%s\n"
574 "Is this really what you want to do?"),
575 aura_buffer_buf(omit), aura_buffer_buf(consequences))) {
587 aura_buffer_free(omit);
588 aura_buffer_free(consequences);
593 static struct dfui_form *
594 make_create_subpartitions_form(struct i_fn_args *a)
596 struct dfui_field *fi;
598 char msg_buf[1][1024];
600 snprintf(msg_buf[0], sizeof(msg_buf[0]),
601 _("Subpartitions further divide a primary partition for "
602 "use with %s. Some reasons you may want "
603 "a set of subpartitions are:\n\n"
604 "- you want to restrict how much data can be written "
605 "to certain parts of the primary partition, to quell "
606 "denial-of-service attacks; and\n"
607 "- you want to speed up access to data on the disk."
608 ""), OPERATING_SYSTEM_NAME);
610 f = dfui_form_create(
611 "create_subpartitions",
612 _("Create Subpartitions"),
613 _("Set up the subpartitions (also known as just `partitions' "
614 "in BSD tradition) you want to have on this primary "
616 "For Capacity, use 'M' to indicate megabytes, 'G' to "
617 "indicate gigabytes, or a single '*' to indicate "
618 "'use the remaining space on the primary partition'."),
622 "p", "special", "dfinstaller_create_subpartitions",
623 "p", "minimum_width","64",
625 "f", "mountpoint", _("Mountpoint"), "", "",
626 "f", "capacity", _("Capacity"), "", "",
628 "a", "ok", _("Accept and Create"), "", "",
630 (disk_get_formatted(storage_get_selected_disk(a->s)) ?
631 _("Return to Select Disk") :
632 _("Return to Select Primary Partition")), "", "",
633 "p", "accelerator", "ESC",
638 dfui_form_set_multiple(f, 1);
639 dfui_form_set_extensible(f, 1);
642 fi = dfui_form_field_add(f, "softupdates",
643 dfui_info_new(_("Softupdates"), "", ""));
644 dfui_field_property_set(fi, "control", "checkbox");
646 fi = dfui_form_field_add(f, "mfsbacked",
647 dfui_info_new(_("MFS"), "", ""));
648 dfui_field_property_set(fi, "control", "checkbox");
650 fi = dfui_form_field_add(f, "fsize",
651 dfui_info_new(_("Frag Sz"), "", ""));
653 fi = dfui_form_field_add(f, "bsize",
654 dfui_info_new(_("Block Sz"), "", ""));
656 dfui_form_action_add(f, "switch",
657 dfui_info_new(_("Switch to Normal Mode"), "", ""));
659 dfui_form_action_add(f, "switch",
660 dfui_info_new(_("Switch to Expert Mode"), "", ""));
668 * -1 = the form should be redisplayed
669 * 0 = failure, function is over
670 * 1 = success, function is over
673 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
675 struct dfui_dataset *ds;
676 struct dfui_response *r;
679 if (dfui_form_dataset_get_first(f) == NULL)
680 populate_create_subpartitions_form(f, a);
682 if (!dfui_be_present(a->c, f, &r))
685 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
686 dfui_response_free(r);
688 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
689 if (check_subpartition_selections(r, a)) {
690 save_subpartition_selections(r, a);
691 expert = expert ? 0 : 1;
692 dfui_response_free(r);
696 if (check_subpartition_selections(r, a)) {
697 save_subpartition_selections(r, a);
698 if (!warn_subpartition_selections(a)) {
699 if (!create_subpartitions(a)) {
700 inform(a->c, _("The subpartitions you chose were "
701 "not correctly created, and the "
702 "primary partition may "
703 "now be in an inconsistent state. "
704 "We recommend re-formatting it "
705 "before proceeding."));
706 dfui_response_free(r);
709 dfui_response_free(r);
716 dfui_form_datasets_free(f);
717 /* dfui_form_datasets_add_from_response(f, r); */
718 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
719 ds = dfui_dataset_get_next(ds)) {
720 dfui_form_dataset_add(f, dfui_dataset_dup(ds));
726 * fn_create_subpartitions: let the user specify what subpartitions they
727 * want on the disk, how large each should be, and where it should be mounted.
730 fn_create_subpartitions(struct i_fn_args *a)
732 struct commands *cmds;
734 cmds = commands_new();
737 * Auto-disklabel the slice.
738 * NB: one cannot use "/dev/adXsY" here -
739 * it must be in the form "adXsY".
741 command_add(cmds, "%s%s if=/dev/zero of=/dev/%s bs=32k count=16",
742 a->os_root, cmd_name(a, "DD"),
743 slice_get_raw_device_name(storage_get_selected_slice(a->s)));
744 command_add(cmds, "%s%s -B -r -w %s auto",
745 a->os_root, cmd_name(a, "DISKLABEL64"),
746 slice_get_raw_device_name(storage_get_selected_slice(a->s)));
747 commands_execute(a, cmds);
751 fn_create_subpartitions_hammer(a);
753 fn_create_subpartitions_ufs(a);
757 fn_create_subpartitions_ufs(struct i_fn_args *a)
764 f = make_create_subpartitions_form(a);
765 switch (show_create_subpartitions_form(f, a)) {