2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
5 * Introduced single menu mode (show all sub-menus in one large tree).
6 * 2002-11-06 Petr Baudis <pasky@ucw.cz>
8 * i18n, 2005, Arnaldo Carvalho de Melo <acme@conectiva.com.br>
11 #include <sys/ioctl.h>
24 #define LKC_DIRECT_LINK
27 static char menu_backtitle[128];
28 static const char mconf_readme[] = N_(
31 "Some kernel features may be built directly into the kernel.\n"
32 "Some may be made into loadable runtime modules. Some features\n"
33 "may be completely removed altogether. There are also certain\n"
34 "kernel parameters which are not really features, but must be\n"
35 "entered in as decimal or hexadecimal numbers or possibly text.\n"
37 "Menu items beginning with [*], <M> or [ ] represent features\n"
38 "configured to be built in, modularized or removed respectively.\n"
39 "Pointed brackets <> represent module capable features.\n"
41 "To change any of these features, highlight it with the cursor\n"
42 "keys and press <Y> to build it in, <M> to make it a module or\n"
43 "<N> to removed it. You may also press the <Space Bar> to cycle\n"
44 "through the available options (ie. Y->N->M->Y).\n"
46 "Some additional keyboard hints:\n"
50 "o Use the Up/Down arrow keys (cursor keys) to highlight the item\n"
51 " you wish to change or submenu wish to select and press <Enter>.\n"
52 " Submenus are designated by \"--->\".\n"
54 " Shortcut: Press the option's highlighted letter (hotkey).\n"
55 " Pressing a hotkey more than once will sequence\n"
56 " through all visible items which use that hotkey.\n"
58 " You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"
59 " unseen options into view.\n"
61 "o To exit a menu use the cursor keys to highlight the <Exit> button\n"
62 " and press <ENTER>.\n"
64 " Shortcut: Press <ESC><ESC> or <E> or <X> if there is no hotkey\n"
65 " using those letters. You may press a single <ESC>, but\n"
66 " there is a delayed response which you may find annoying.\n"
68 " Also, the <TAB> and cursor keys will cycle between <Select>,\n"
69 " <Exit> and <Help>\n"
71 "o To get help with an item, use the cursor keys to highlight <Help>\n"
72 " and Press <ENTER>.\n"
74 " Shortcut: Press <H> or <?>.\n"
77 "Radiolists (Choice lists)\n"
79 "o Use the cursor keys to select the option you wish to set and press\n"
80 " <S> or the <SPACE BAR>.\n"
82 " Shortcut: Press the first letter of the option you wish to set then\n"
83 " press <S> or <SPACE BAR>.\n"
85 "o To see available help for the item, use the cursor keys to highlight\n"
86 " <Help> and Press <ENTER>.\n"
88 " Shortcut: Press <H> or <?>.\n"
90 " Also, the <TAB> and cursor keys will cycle between <Select> and\n"
96 "o Enter the requested information and press <ENTER>\n"
97 " If you are entering hexadecimal values, it is not necessary to\n"
98 " add the '0x' prefix to the entry.\n"
100 "o For help, use the <TAB> or cursor keys to highlight the help option\n"
101 " and press <ENTER>. You can try <TAB><H> as well.\n"
104 "Text Box (Help Window)\n"
106 "o Use the cursor keys to scroll up/down/left/right. The VI editor\n"
107 " keys h,j,k,l function here as do <SPACE BAR> and <B> for those\n"
108 " who are familiar with less and lynx.\n"
110 "o Press <E>, <X>, <Enter> or <Esc><Esc> to exit.\n"
113 "Alternate Configuration Files\n"
114 "-----------------------------\n"
115 "Menuconfig supports the use of alternate configuration files for\n"
116 "those who, for various reasons, find it necessary to switch\n"
117 "between different kernel configurations.\n"
119 "At the end of the main menu you will find two options. One is\n"
120 "for saving the current configuration to a file of your choosing.\n"
121 "The other option is for loading a previously saved alternate\n"
124 "Even if you don't use alternate configuration files, but you\n"
125 "find during a Menuconfig session that you have completely messed\n"
126 "up your settings, you may use the \"Load Alternate...\" option to\n"
127 "restore your previously saved settings from \".config\" without\n"
128 "restarting Menuconfig.\n"
130 "Other information\n"
131 "-----------------\n"
132 "If you use Menuconfig in an XTERM window make sure you have your\n"
133 "$TERM variable set to point to a xterm definition which supports color.\n"
134 "Otherwise, Menuconfig will look rather bad. Menuconfig will not\n"
135 "display correctly in a RXVT window because rxvt displays only one\n"
136 "intensity of color, bright.\n"
138 "Menuconfig will display larger menus on screens or xterms which are\n"
139 "set to display more than the standard 25 row by 80 column geometry.\n"
140 "In order for this to work, the \"stty size\" command must be able to\n"
141 "display the screen's current row and column geometry. I STRONGLY\n"
142 "RECOMMEND that you make sure you do NOT have the shell variables\n"
143 "LINES and COLUMNS exported into your environment. Some distributions\n"
144 "export those variables via /etc/profile. Some ncurses programs can\n"
145 "become confused when those variables (LINES & COLUMNS) don't reflect\n"
146 "the true screen size.\n"
148 "Optional personality available\n"
149 "------------------------------\n"
150 "If you prefer to have all of the kernel options listed in a single\n"
151 "menu, rather than the default multimenu hierarchy, run the menuconfig\n"
152 "with MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
154 "make MENUCONFIG_MODE=single_menu menuconfig\n"
156 "<Enter> will then unroll the appropriate category, or enfold it if it\n"
157 "is already unrolled.\n"
159 "Note that this mode can eventually be a little more CPU expensive\n"
160 "(especially with a larger number of unrolled categories) than the\n"
162 menu_instructions[] = N_(
163 "Arrow keys navigate the menu. "
164 "<Enter> selects submenus --->. "
165 "Highlighted letters are hotkeys. "
166 "Pressing <Y> includes, <N> excludes, <M> modularizes features. "
167 "Press <Esc><Esc> to exit, <?> for Help, </> for Search. "
168 "Legend: [*] built-in [ ] excluded <M> module < > module capable"),
169 radiolist_instructions[] = N_(
170 "Use the arrow keys to navigate this window or "
171 "press the hotkey of the item you wish to select "
172 "followed by the <SPACE BAR>. "
173 "Press <?> for additional information about this option."),
174 inputbox_instructions_int[] = N_(
175 "Please enter a decimal value. "
176 "Fractions will not be accepted. "
177 "Use the <TAB> key to move from the input field to the buttons below it."),
178 inputbox_instructions_hex[] = N_(
179 "Please enter a hexadecimal value. "
180 "Use the <TAB> key to move from the input field to the buttons below it."),
181 inputbox_instructions_string[] = N_(
182 "Please enter a string value. "
183 "Use the <TAB> key to move from the input field to the buttons below it."),
185 "This feature depends on another which has been configured as a module.\n"
186 "As a result, this feature will be built as a module."),
188 "There is no help available for this kernel option.\n"),
189 load_config_text[] = N_(
190 "Enter the name of the configuration file you wish to load. "
191 "Accept the name shown to restore the configuration you "
192 "last retrieved. Leave blank to abort."),
193 load_config_help[] = N_(
195 "For various reasons, one may wish to keep several different kernel\n"
196 "configurations available on a single machine.\n"
198 "If you have saved a previous configuration in a file other than the\n"
199 "kernel's default, entering the name of the file here will allow you\n"
200 "to modify that configuration.\n"
202 "If you are uncertain, then you have probably never used alternate\n"
203 "configuration files. You should therefor leave this blank to abort.\n"),
204 save_config_text[] = N_(
205 "Enter a filename to which this configuration should be saved "
206 "as an alternate. Leave blank to abort."),
207 save_config_help[] = N_(
209 "For various reasons, one may wish to keep different kernel\n"
210 "configurations available on a single machine.\n"
212 "Entering a file name here will allow you to later retrieve, modify\n"
213 "and use the current configuration as an alternate to whatever\n"
214 "configuration options you have selected at that time.\n"
216 "If you are uncertain what all this means then you should probably\n"
217 "leave this blank.\n"),
220 "Search for CONFIG_ symbols and display their relations.\n"
221 "Example: search for \"^FOO\"\n"
223 "-----------------------------------------------------------------\n"
225 "Prompt: Foo bus is used to drive the bar HW\n"
226 "Defined at drivers/pci/Kconfig:47\n"
227 "Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
229 " -> Bus options (PCI, PCMCIA, EISA, MCA, ISA)\n"
230 " -> PCI support (PCI [=y])\n"
231 " -> PCI access mode (<choice> [=y])\n"
232 "Selects: LIBCRC32\n"
234 "-----------------------------------------------------------------\n"
235 "o The line 'Prompt:' shows the text used in the menu structure for\n"
236 " this CONFIG_ symbol\n"
237 "o The 'Defined at' line tell at what file / line number the symbol\n"
239 "o The 'Depends on:' line tell what symbols needs to be defined for\n"
240 " this symbol to be visible in the menu (selectable)\n"
241 "o The 'Location:' lines tell where in the menu structure this symbol\n"
243 " A location followed by a [=y] indicate that this is a selectable\n"
244 " menu item - and current value is displayed inside brackets.\n"
245 "o The 'Selects:' line tell what symbol will be automatically\n"
246 " selected if this symbol is selected (y or m)\n"
247 "o The 'Selected by' line tell what symbol has selected this symbol\n"
249 "Only relevant lines are shown.\n"
252 "Examples: USB => find all CONFIG_ symbols containing USB\n"
253 " ^USB => find all CONFIG_ symbols starting with USB\n"
254 " USB$ => find all CONFIG_ symbols ending with USB\n"
257 static signed char buf[4096], *bufptr = buf;
258 static signed char input_buf[4096];
259 static char filename[PATH_MAX+1] = ".config";
260 static char *args[1024], **argptr = args;
262 static struct termios ios_org;
263 static int rows = 0, cols = 0;
264 static struct menu *current_menu;
265 static int child_count;
266 static int do_resize;
267 static int single_menu_mode;
269 static void conf(struct menu *menu);
270 static void conf_choice(struct menu *menu);
271 static void conf_string(struct menu *menu);
272 static void conf_load(void);
273 static void conf_save(void);
274 static void show_textbox(const char *title, const char *text, int r, int c);
275 static void show_helptext(const char *title, const char *text);
276 static void show_help(struct menu *menu);
277 static void show_file(const char *filename, const char *title, int r, int c);
279 static void cprint_init(void);
280 static int cprint1(const char *fmt, ...);
281 static void cprint_done(void);
282 static int cprint(const char *fmt, ...);
284 static void init_wsize(void)
289 if (!ioctl(STDIN_FILENO, TIOCGWINSZ, &ws)) {
295 env = getenv("LINES");
302 env = getenv("COLUMNS");
309 if (rows < 19 || cols < 80) {
310 fprintf(stderr, N_("Your display is too small to run Menuconfig!\n"));
311 fprintf(stderr, N_("It must be at least 19 lines by 80 columns.\n"));
319 static void cprint_init(void)
323 memset(args, 0, sizeof(args));
326 cprint("./scripts/lxdialog/lxdialog");
327 cprint("--backtitle");
328 cprint(menu_backtitle);
331 static int cprint1(const char *fmt, ...)
339 res = vsprintf(bufptr, fmt, ap);
346 static void cprint_done(void)
352 static int cprint(const char *fmt, ...)
359 res = vsprintf(bufptr, fmt, ap);
367 static void get_prompt_str(struct gstr *r, struct property *prop)
370 struct menu *submenu[8], *menu;
372 str_printf(r, "Prompt: %s\n", prop->text);
373 str_printf(r, " Defined at %s:%d\n", prop->menu->file->name,
375 if (!expr_is_yes(prop->visible.expr)) {
376 str_append(r, " Depends on: ");
377 expr_gstr_print(prop->visible.expr, r);
380 menu = prop->menu->parent;
381 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
384 str_printf(r, " Location:\n");
385 for (j = 4; --i >= 0; j += 2) {
387 str_printf(r, "%*c-> %s", j, ' ', menu_get_prompt(menu));
389 str_printf(r, " (%s [=%s])", menu->sym->name ?
390 menu->sym->name : "<choice>",
391 sym_get_string_value(menu->sym));
398 static void get_symbol_str(struct gstr *r, struct symbol *sym)
401 struct property *prop;
403 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
404 sym_get_string_value(sym));
405 for_all_prompts(sym, prop)
406 get_prompt_str(r, prop);
408 for_all_properties(sym, prop, P_SELECT) {
410 str_append(r, " Selects: ");
413 str_printf(r, " && ");
414 expr_gstr_print(prop->expr, r);
418 if (sym->rev_dep.expr) {
419 str_append(r, " Selected by: ");
420 expr_gstr_print(sym->rev_dep.expr, r);
423 str_append(r, "\n\n");
426 static struct gstr get_relations_str(struct symbol **sym_arr)
429 struct gstr res = str_new();
432 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
433 get_symbol_str(&res, sym);
435 str_append(&res, "No matches found.\n");
441 static void winch_handler(int sig)
449 static int exec_conf(void)
451 int pipefd[2], stat, size;
453 sigset_t sset, osset;
456 sigaddset(&sset, SIGINT);
457 sigprocmask(SIG_BLOCK, &sset, &osset);
459 signal(SIGINT, SIG_DFL);
461 sa.sa_handler = winch_handler;
462 sigemptyset(&sa.sa_mask);
463 sa.sa_flags = SA_RESTART;
464 sigaction(SIGWINCH, &sa, NULL);
471 sigprocmask(SIG_SETMASK, &osset, NULL);
475 execv(args[0], args);
482 size = input_buf + sizeof(input_buf) - bufptr;
483 size = read(pipefd[0], bufptr, size);
486 if (errno == EINTR || errno == EAGAIN)
496 waitpid(pid, &stat, 0);
501 sigprocmask(SIG_SETMASK, &osset, NULL);
504 if (WIFSIGNALED(stat)) {
505 printf("\finterrupted(%d)\n", WTERMSIG(stat));
509 printf("\fexit state: %d\nexit data: '%s'\n", WEXITSTATUS(stat), input_buf);
513 if (sigismember(&sset, SIGINT)) {
514 printf("\finterrupted\n");
517 sigprocmask(SIG_SETMASK, &osset, NULL);
519 return WEXITSTATUS(stat);
522 static void search_conf(void)
524 struct symbol **sym_arr;
531 cprint(_("Search Configuration Parameter"));
532 cprint("--inputbox");
533 cprint(_("Enter Keyword"));
544 show_helptext(_("Search Configuration"), search_help);
550 sym_arr = sym_re_search(input_buf);
551 res = get_relations_str(sym_arr);
553 show_textbox(_("Search Results"), str_get(&res), 0, 0);
557 static void build_conf(struct menu *menu)
560 struct property *prop;
562 int type, tmp, doint = 2;
566 if (!menu_is_visible(menu))
572 if (prop && menu != current_menu) {
573 const char *prompt = menu_get_prompt(menu);
574 switch (prop->type) {
579 if (single_menu_mode) {
581 menu->data ? "-->" : "++>",
582 indent + 1, ' ', prompt);
584 cprint1(" %*c%s --->", indent + 1, ' ', prompt);
587 if (single_menu_mode && menu->data)
594 cprint("---%*c%s", indent + 1, ' ', prompt);
602 type = sym_get_type(sym);
603 if (sym_is_choice(sym)) {
604 struct symbol *def_sym = sym_get_choice_value(sym);
605 struct menu *def_menu = NULL;
608 for (child = menu->list; child; child = child->next) {
609 if (menu_is_visible(child) && child->sym == def_sym)
613 val = sym_get_tristate_value(sym);
614 if (sym_is_changable(sym)) {
618 cprint1("[%c]", val == no ? ' ' : '*');
622 case yes: ch = '*'; break;
623 case mod: ch = 'M'; break;
624 default: ch = ' '; break;
630 cprint("%c%p", def_menu ? 't' : ':', menu);
634 cprint1("%*c%s", indent + 1, ' ', menu_get_prompt(menu));
637 cprint1(" (%s)", menu_get_prompt(def_menu));
640 if (def_menu->list) {
642 build_conf(def_menu);
651 if (menu == current_menu) {
653 cprint("---%*c%s", indent + 1, ' ', menu_get_prompt(menu));
657 val = sym_get_tristate_value(sym);
658 if (sym_is_choice_value(sym) && val == yes) {
665 if (sym_is_changable(sym))
666 cprint1("[%c]", val == no ? ' ' : '*');
673 case yes: ch = '*'; break;
674 case mod: ch = 'M'; break;
675 default: ch = ' '; break;
677 if (sym_is_changable(sym))
684 tmp = cprint1("(%s)", sym_get_string_value(sym));
685 tmp = indent - tmp + 4;
688 cprint1("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
689 (sym_has_value(sym) || !sym_is_changable(sym)) ?
695 cprint1("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
696 (sym_has_value(sym) || !sym_is_changable(sym)) ?
698 if (menu->prompt->type == P_MENU) {
708 for (child = menu->list; child; child = child->next)
713 static void conf(struct menu *menu)
715 struct menu *submenu;
716 const char *prompt = menu_get_prompt(menu);
718 char active_entry[40];
721 unlink("lxdialog.scrltmp");
726 cprint("%s", prompt ? prompt : _("Main Menu"));
728 cprint(_(menu_instructions));
731 cprint("%d", rows - 10);
732 cprint("%s", active_entry);
737 if (menu == &rootmenu) {
741 cprint(_(" Load an Alternate Configuration File"));
743 cprint(_(" Save Configuration to an Alternate File"));
749 if (stat == 1 || stat == 255)
756 for (i = 0; input_buf[i] && !isspace(input_buf[i]); i++)
758 if (i >= sizeof(active_entry))
759 i = sizeof(active_entry) - 1;
761 strcpy(active_entry, input_buf);
765 if (sscanf(input_buf + 1, "%p", &submenu) == 1)
772 if (single_menu_mode)
773 submenu->data = (void *) (long) !submenu->data;
778 if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
779 conf_choice(submenu);
780 else if (submenu->prompt->type == P_MENU)
784 conf_string(submenu);
798 show_helptext("README", _(mconf_readme));
802 if (sym_set_tristate_value(sym, yes))
804 if (sym_set_tristate_value(sym, mod))
805 show_textbox(NULL, setmod_text, 6, 74);
810 sym_set_tristate_value(sym, no);
814 sym_set_tristate_value(sym, mod);
818 sym_toggle_tristate_value(sym);
819 else if (type == 'm')
829 static void show_textbox(const char *title, const char *text, int r, int c)
833 fd = creat(".help.tmp", 0777);
834 write(fd, text, strlen(text));
836 show_file(".help.tmp", title, r, c);
840 static void show_helptext(const char *title, const char *text)
842 show_textbox(title, text, 0, 0);
845 static void show_help(struct menu *menu)
847 struct gstr help = str_new();
848 struct symbol *sym = menu->sym;
853 str_printf(&help, "CONFIG_%s:\n\n", sym->name);
854 str_append(&help, _(sym->help));
855 str_append(&help, "\n");
858 str_append(&help, nohelp_text);
860 get_symbol_str(&help, sym);
861 show_helptext(menu_get_prompt(menu), str_get(&help));
865 static void show_file(const char *filename, const char *title, int r, int c)
874 cprint("%s", filename);
875 cprint("%d", r ? r : rows);
876 cprint("%d", c ? c : cols);
877 } while (exec_conf() < 0);
880 static void conf_choice(struct menu *menu)
882 const char *prompt = menu_get_prompt(menu);
884 struct symbol *active;
887 active = sym_get_choice_value(menu->sym);
891 cprint("%s", prompt ? prompt : _("Main Menu"));
892 cprint("--radiolist");
893 cprint(_(radiolist_instructions));
899 for (child = menu->list; child; child = child->next) {
900 if (!menu_is_visible(child))
903 cprint("%s", menu_get_prompt(child));
904 if (child->sym == sym_get_choice_value(menu->sym))
906 else if (child->sym == active)
915 if (sscanf(input_buf, "%p", &child) != 1)
917 sym_set_tristate_value(child->sym, yes);
920 if (sscanf(input_buf, "%p", &child) == 1) {
932 static void conf_string(struct menu *menu)
934 const char *prompt = menu_get_prompt(menu);
940 cprint("%s", prompt ? prompt : _("Main Menu"));
941 cprint("--inputbox");
942 switch (sym_get_type(menu->sym)) {
944 cprint(_(inputbox_instructions_int));
947 cprint(_(inputbox_instructions_hex));
950 cprint(_(inputbox_instructions_string));
957 cprint("%s", sym_get_string_value(menu->sym));
961 if (sym_set_string_value(menu->sym, input_buf))
963 show_textbox(NULL, _("You have made an invalid entry."), 5, 43);
974 static void conf_load(void)
980 cprint("--inputbox");
981 cprint(load_config_text);
984 cprint("%s", filename);
990 if (!conf_read(input_buf))
992 show_textbox(NULL, _("File does not exist!"), 5, 38);
995 show_helptext(_("Load Alternate Configuration"), load_config_help);
1003 static void conf_save(void)
1009 cprint("--inputbox");
1010 cprint(save_config_text);
1013 cprint("%s", filename);
1019 if (!conf_write(input_buf))
1021 show_textbox(NULL, _("Can't create file! Probably a nonexistent directory."), 5, 60);
1024 show_helptext(_("Save Alternate Configuration"), save_config_help);
1032 static void conf_cleanup(void)
1034 tcsetattr(1, TCSAFLUSH, &ios_org);
1035 unlink(".help.tmp");
1036 unlink("lxdialog.scrltmp");
1039 int main(int ac, char **av)
1045 setlocale(LC_ALL, "");
1046 bindtextdomain(PACKAGE, LOCALEDIR);
1047 textdomain(PACKAGE);
1052 sym = sym_lookup("KERNELRELEASE", 0);
1053 sym_calc_value(sym);
1054 sprintf(menu_backtitle, _("Linux Kernel v%s Configuration"),
1055 sym_get_string_value(sym));
1057 mode = getenv("MENUCONFIG_MODE");
1059 if (!strcasecmp(mode, "single_menu"))
1060 single_menu_mode = 1;
1063 tcgetattr(1, &ios_org);
1064 atexit(conf_cleanup);
1071 cprint(_("Do you wish to save your new kernel configuration?"));
1078 if (conf_write(NULL)) {
1079 fprintf(stderr, _("\n\n"
1080 "Error during writing of the kernel configuration.\n"
1081 "Your kernel configuration changes were NOT saved."
1086 "*** End of Linux kernel configuration.\n"
1087 "*** Execute 'make' to build the kernel or try 'make help'."
1090 fprintf(stderr, _("\n\n"
1091 "Your kernel configuration changes were NOT saved."