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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_tmpfsbacked(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_tmpfsbacked(sp))
198 command_add(cmds, "%s%s%s -b %ld -f %ld %sdev/%s",
199 a->os_root, cmd_name(a, "NEWFS"),
200 subpartition_is_softupdated(sp) ? " -U" : "",
201 subpartition_get_bsize(sp),
202 subpartition_get_fsize(sp),
204 subpartition_get_device_name(sp));
207 result = commands_execute(a, cmds);
213 default_capacity(struct storage *s, int mtpt)
216 unsigned long capacity;
219 if (mtpt == MTPT_HOME)
222 capacity = slice_get_capacity(storage_get_selected_slice(s));
223 mem = storage_get_memsize(s);
225 if (mem > (capacity / 2) || capacity < 4096)
232 if (capacity < DISK_MIN) {
234 * For the purposes of this installer:
235 * can't be done. Sorry.
238 } else if (capacity < 4096) {
240 case MTPT_ROOT: return(320);
241 case MTPT_SWAP: return(swap);
242 case MTPT_VAR: return(128);
243 case MTPT_TMP: return(128);
244 case MTPT_USR: return(1472);
246 } else if (capacity < 10240) {
248 case MTPT_ROOT: return(640);
249 case MTPT_SWAP: return(swap);
250 case MTPT_VAR: return(256);
251 case MTPT_TMP: return(256);
252 case MTPT_USR: return(2688);
256 case MTPT_ROOT: return(768);
257 case MTPT_SWAP: return(swap);
258 case MTPT_VAR: return(256);
259 case MTPT_TMP: return(256);
260 case MTPT_USR: return(7680);
263 /* shouldn't ever happen */
268 check_capacity(struct i_fn_args *a)
270 struct subpartition *sp;
271 long min_capacity[] = {320, 0, 16, 0, 1472, 0, 0};
272 unsigned long total_capacity = 0;
275 if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL)
276 min_capacity[MTPT_ROOT] += min_capacity[MTPT_USR];
278 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
279 sp != NULL; sp = subpartition_next(sp)) {
280 long subpart_capacity = subpartition_get_capacity(sp);
281 const char *mountpt = subpartition_get_mountpoint(sp);
283 if (subpart_capacity == -1)
286 total_capacity += subpart_capacity;
287 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
288 if (strcmp(mountpt, def_mountpt[mtpt]) == 0 &&
289 subpart_capacity < min_capacity[mtpt] &&
290 subpart_capacity != -1) {
291 inform(a->c, _("WARNING: The size (%ldM) specified for "
292 "the %s subpartition is too small. It "
293 "should be at least %ldM or you will "
294 "risk running out of space during "
295 "the installation."),
296 subpart_capacity, mountpt,
302 if (total_capacity > slice_get_capacity(storage_get_selected_slice(a->s))) {
303 inform(a->c, _("The space allocated to all of your selected "
304 "subpartitions (%luM) exceeds the total "
305 "capacity of the selected primary partition "
306 "(%luM). Remove some subpartitions or choose "
307 "a smaller size for them and try again."),
308 total_capacity, slice_get_capacity(storage_get_selected_slice(a->s)));
316 check_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
318 struct dfui_dataset *ds;
319 struct dfui_dataset *star_ds = NULL;
321 const char *mountpoint, *capstring;
325 int softupdates, tmpfsbacked;
328 d = aura_dict_new(1, AURA_DICT_LIST);
330 if ((ds = dfui_response_dataset_get_first(r)) == NULL) {
331 inform(a->c, _("Please set up at least one subpartition."));
335 for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
336 ds = dfui_dataset_get_next(ds)) {
338 dfui_dataset_dump(ds);
340 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
341 capstring = dfui_dataset_get_value(ds, "capacity");
345 (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
346 fsize = atol(dfui_dataset_get_value(ds, "fsize"));
347 bsize = atol(dfui_dataset_get_value(ds, "bsize"));
348 tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
350 softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
351 tmpfsbacked = (strcmp(mountpoint, "/tmp") == 0 ? 0 : 1);
356 if (aura_dict_exists(d, mountpoint, strlen(mountpoint) + 1)) {
357 inform(a->c, _("The same mount point cannot be specified "
358 "for two different subpartitions."));
362 if (strcmp(mountpoint, "/") == 0)
365 if (strcmp(capstring, "*") == 0) {
366 if (star_ds != NULL) {
367 inform(a->c, _("You cannot have more than one subpartition "
368 "with a '*' capacity (meaning 'use the remainder "
369 "of the primary partition'.)"));
376 if (!(!strcasecmp(mountpoint, "swap") || mountpoint[0] == '/')) {
377 inform(a->c, _("Mount point must be either 'swap', or it must "
378 "start with a '/'."));
382 if (strpbrk(mountpoint, " \\\"'`") != NULL) {
383 inform(a->c, _("Mount point may not contain the following "
384 "characters: blank space, backslash, or "
385 "single, double, or back quotes."));
389 if (strlen(capstring) == 0) {
390 inform(a->c, _("A capacity must be specified."));
394 if (!string_to_capacity(capstring, &capacity)) {
395 inform(a->c, _("Capacity must be either a '*' symbol to indicate "
396 "'use the rest of the primary partition', or it "
397 "must be a series of decimal digits ending with a "
398 "'M' (indicating megabytes) or a 'G' (indicating "
403 if ((strcasecmp(mountpoint, "swap") == 0) && (capacity > 8192)) {
404 inform(a->c, _("Swap capacity is limited to 8G."));
409 * If we made it through that obstacle course, all is well.
413 aura_dict_store(d, mountpoint, strlen(mountpoint) + 1, "", 1);
417 inform(a->c, _("You must include a / (root) subpartition."));
421 if (aura_dict_size(d) > 16) {
422 inform(a->c, _("You cannot have more than 16 subpartitions "
423 "on a single primary partition. Remove some "
434 save_subpartition_selections(struct dfui_response *r, struct i_fn_args *a)
436 struct dfui_dataset *ds;
438 const char *mountpoint, *capstring;
444 subpartitions_free(storage_get_selected_slice(a->s));
446 for (ds = dfui_response_dataset_get_first(r); valid && ds != NULL;
447 ds = dfui_dataset_get_next(ds)) {
448 mountpoint = dfui_dataset_get_value(ds, "mountpoint");
449 capstring = dfui_dataset_get_value(ds, "capacity");
453 (strcmp(dfui_dataset_get_value(ds, "softupdates"), "Y") == 0);
454 fsize = atol(dfui_dataset_get_value(ds, "fsize"));
455 bsize = atol(dfui_dataset_get_value(ds, "bsize"));
456 tmpfsbacked = (strcmp(dfui_dataset_get_value(ds, "tmpfsbacked"), "Y") == 0);
458 softupdates = (strcmp(mountpoint, "/") == 0 ? 0 : 1);
464 if (string_to_capacity(capstring, &capacity)) {
465 subpartition_new(storage_get_selected_slice(a->s), mountpoint, capacity,
466 softupdates, fsize, bsize, tmpfsbacked);
472 populate_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
474 struct subpartition *sp;
475 struct dfui_dataset *ds;
480 if (slice_subpartition_first(storage_get_selected_slice(a->s)) != NULL) {
482 * The user has already given us their subpartition
483 * preferences, so use them here.
485 for (sp = slice_subpartition_first(storage_get_selected_slice(a->s));
486 sp != NULL; sp = subpartition_next(sp)) {
487 ds = dfui_dataset_new();
488 dfui_dataset_celldata_add(ds, "mountpoint",
489 subpartition_get_mountpoint(sp));
490 dfui_dataset_celldata_add(ds, "capacity",
491 capacity_to_string(subpartition_get_capacity(sp)));
493 dfui_dataset_celldata_add(ds, "softupdates",
494 subpartition_is_softupdated(sp) ? "Y" : "N");
495 dfui_dataset_celldata_add(ds, "tmpfsbacked",
496 subpartition_is_tmpfsbacked(sp) ? "Y" : "N");
497 snprintf(temp, 32, "%ld", subpartition_get_fsize(sp));
498 dfui_dataset_celldata_add(ds, "fsize",
500 snprintf(temp, 32, "%ld", subpartition_get_bsize(sp));
501 dfui_dataset_celldata_add(ds, "bsize",
504 dfui_form_dataset_add(f, ds);
508 * Otherwise, populate the form with datasets representing
509 * reasonably-calculated defaults. The defaults are chosen
510 * based on the slice's total capacity and the machine's
511 * total physical memory (for swap.)
513 for (mtpt = 0; def_mountpt[mtpt] != NULL; mtpt++) {
514 capacity = default_capacity(a->s, mtpt);
515 ds = dfui_dataset_new();
516 dfui_dataset_celldata_add(ds, "mountpoint",
518 dfui_dataset_celldata_add(ds, "capacity",
519 capacity_to_string(capacity));
521 dfui_dataset_celldata_add(ds, "softupdates",
522 strcmp(def_mountpt[mtpt], "/") != 0 ? "Y" : "N");
523 dfui_dataset_celldata_add(ds, "tmpfsbacked",
525 dfui_dataset_celldata_add(ds, "fsize",
526 capacity < 1024 ? "1024" : "2048");
527 dfui_dataset_celldata_add(ds, "bsize",
528 capacity < 1024 ? "8192" : "16384");
530 dfui_form_dataset_add(f, ds);
536 warn_subpartition_selections(struct i_fn_args *a)
539 struct aura_buffer *omit, *consequences;
541 omit = aura_buffer_new(2048);
542 consequences = aura_buffer_new(2048);
544 valid = check_capacity(a);
545 if (subpartition_find(storage_get_selected_slice(a->s), "/var") == NULL) {
546 aura_buffer_cat(omit, "/var ");
547 aura_buffer_cat(consequences, _("/var will be a plain dir in /\n"));
549 if (subpartition_find(storage_get_selected_slice(a->s), "/usr") == NULL) {
550 aura_buffer_cat(omit, "/usr ");
551 aura_buffer_cat(consequences, _("/usr will be a plain dir in /\n"));
553 if (subpartition_find(storage_get_selected_slice(a->s), "/tmp") == NULL) {
554 aura_buffer_cat(omit, "/tmp ");
555 aura_buffer_cat(consequences, _("/tmp will be symlinked to /var/tmp\n"));
557 if (subpartition_find(storage_get_selected_slice(a->s), "/home") == NULL) {
558 aura_buffer_cat(omit, "/home ");
559 aura_buffer_cat(consequences, _("/home will be symlinked to /usr/home\n"));
562 if (valid && aura_buffer_len(omit) > 0) {
563 switch (dfui_be_present_dialog(a->c, _("Really omit?"),
564 _("Omit Subpartition(s)|Return to Create Subpartitions"),
565 _("You have elected to not have the following "
566 "subpartition(s):\n\n%s\n\n"
567 "The ramifications of these subpartition(s) being "
568 "missing will be:\n\n%s\n"
569 "Is this really what you want to do?"),
570 aura_buffer_buf(omit), aura_buffer_buf(consequences))) {
582 aura_buffer_free(omit);
583 aura_buffer_free(consequences);
588 static struct dfui_form *
589 make_create_subpartitions_form(struct i_fn_args *a)
591 struct dfui_field *fi;
593 char msg_buf[1][1024];
595 snprintf(msg_buf[0], sizeof(msg_buf[0]),
596 _("Subpartitions further divide a primary partition for "
597 "use with %s. Some reasons you may want "
598 "a set of subpartitions are:\n\n"
599 "- you want to restrict how much data can be written "
600 "to certain parts of the primary partition, to quell "
601 "denial-of-service attacks; and\n"
602 "- you want to speed up access to data on the disk."
603 ""), OPERATING_SYSTEM_NAME);
605 f = dfui_form_create(
606 "create_subpartitions",
607 _("Create Subpartitions"),
608 _("Set up the subpartitions (also known as just `partitions' "
609 "in BSD tradition) you want to have on this primary "
611 "For Capacity, use 'M' to indicate megabytes, 'G' to "
612 "indicate gigabytes, or a single '*' to indicate "
613 "'use the remaining space on the primary partition'."),
617 "p", "special", "dfinstaller_create_subpartitions",
618 "p", "minimum_width","64",
620 "f", "mountpoint", _("Mountpoint"), "", "",
621 "f", "capacity", _("Capacity"), "", "",
623 "a", "ok", _("Accept and Create"), "", "",
625 (disk_get_formatted(storage_get_selected_disk(a->s)) ?
626 _("Return to Select Disk") :
627 _("Return to Select Primary Partition")), "", "",
628 "p", "accelerator", "ESC",
633 dfui_form_set_multiple(f, 1);
634 dfui_form_set_extensible(f, 1);
637 fi = dfui_form_field_add(f, "softupdates",
638 dfui_info_new(_("Softupdates"), "", ""));
639 dfui_field_property_set(fi, "control", "checkbox");
641 fi = dfui_form_field_add(f, "tmpfsbacked",
642 dfui_info_new(_("TMPFS"), "", ""));
643 dfui_field_property_set(fi, "control", "checkbox");
645 fi = dfui_form_field_add(f, "fsize",
646 dfui_info_new(_("Frag Sz"), "", ""));
648 fi = dfui_form_field_add(f, "bsize",
649 dfui_info_new(_("Block Sz"), "", ""));
651 dfui_form_action_add(f, "switch",
652 dfui_info_new(_("Switch to Normal Mode"), "", ""));
654 dfui_form_action_add(f, "switch",
655 dfui_info_new(_("Switch to Expert Mode"), "", ""));
663 * -1 = the form should be redisplayed
664 * 0 = failure, function is over
665 * 1 = success, function is over
668 show_create_subpartitions_form(struct dfui_form *f, struct i_fn_args *a)
670 struct dfui_dataset *ds;
671 struct dfui_response *r;
674 if (dfui_form_dataset_get_first(f) == NULL)
675 populate_create_subpartitions_form(f, a);
677 if (!dfui_be_present(a->c, f, &r))
680 if (strcmp(dfui_response_get_action_id(r), "cancel") == 0) {
681 dfui_response_free(r);
683 } else if (strcmp(dfui_response_get_action_id(r), "switch") == 0) {
684 if (check_subpartition_selections(r, a)) {
685 save_subpartition_selections(r, a);
686 expert = expert ? 0 : 1;
687 dfui_response_free(r);
691 if (check_subpartition_selections(r, a)) {
692 save_subpartition_selections(r, a);
693 if (!warn_subpartition_selections(a)) {
694 if (!create_subpartitions(a)) {
695 inform(a->c, _("The subpartitions you chose were "
696 "not correctly created, and the "
697 "primary partition may "
698 "now be in an inconsistent state. "
699 "We recommend re-formatting it "
700 "before proceeding."));
701 dfui_response_free(r);
704 dfui_response_free(r);
711 dfui_form_datasets_free(f);
712 /* dfui_form_datasets_add_from_response(f, r); */
713 for (ds = dfui_response_dataset_get_first(r); ds != NULL;
714 ds = dfui_dataset_get_next(ds)) {
715 dfui_form_dataset_add(f, dfui_dataset_dup(ds));
721 fn_create_subpartitions_ufs(struct i_fn_args *a)
728 f = make_create_subpartitions_form(a);
729 switch (show_create_subpartitions_form(f, a)) {