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>
25 #define LKC_DIRECT_LINK
28 static char menu_backtitle[128];
29 static const char mconf_readme[] = N_(
32 "Some kernel features may be built directly into the kernel.\n"
33 "Some may be made into loadable runtime modules. Some features\n"
34 "may be completely removed altogether. There are also certain\n"
35 "kernel parameters which are not really features, but must be\n"
36 "entered in as decimal or hexadecimal numbers or possibly text.\n"
38 "Menu items beginning with [*], <M> or [ ] represent features\n"
39 "configured to be built in, modularized or removed respectively.\n"
40 "Pointed brackets <> represent module capable features.\n"
42 "To change any of these features, highlight it with the cursor\n"
43 "keys and press <Y> to build it in, <M> to make it a module or\n"
44 "<N> to removed it. You may also press the <Space Bar> to cycle\n"
45 "through the available options (ie. Y->N->M->Y).\n"
47 "Some additional keyboard hints:\n"
51 "o Use the Up/Down arrow keys (cursor keys) to highlight the item\n"
52 " you wish to change or submenu wish to select and press <Enter>.\n"
53 " Submenus are designated by \"--->\".\n"
55 " Shortcut: Press the option's highlighted letter (hotkey).\n"
56 " Pressing a hotkey more than once will sequence\n"
57 " through all visible items which use that hotkey.\n"
59 " You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"
60 " unseen options into view.\n"
62 "o To exit a menu use the cursor keys to highlight the <Exit> button\n"
63 " and press <ENTER>.\n"
65 " Shortcut: Press <ESC><ESC> or <E> or <X> if there is no hotkey\n"
66 " using those letters. You may press a single <ESC>, but\n"
67 " there is a delayed response which you may find annoying.\n"
69 " Also, the <TAB> and cursor keys will cycle between <Select>,\n"
70 " <Exit> and <Help>\n"
72 "o To get help with an item, use the cursor keys to highlight <Help>\n"
73 " and Press <ENTER>.\n"
75 " Shortcut: Press <H> or <?>.\n"
78 "Radiolists (Choice lists)\n"
80 "o Use the cursor keys to select the option you wish to set and press\n"
81 " <S> or the <SPACE BAR>.\n"
83 " Shortcut: Press the first letter of the option you wish to set then\n"
84 " press <S> or <SPACE BAR>.\n"
86 "o To see available help for the item, use the cursor keys to highlight\n"
87 " <Help> and Press <ENTER>.\n"
89 " Shortcut: Press <H> or <?>.\n"
91 " Also, the <TAB> and cursor keys will cycle between <Select> and\n"
97 "o Enter the requested information and press <ENTER>\n"
98 " If you are entering hexadecimal values, it is not necessary to\n"
99 " add the '0x' prefix to the entry.\n"
101 "o For help, use the <TAB> or cursor keys to highlight the help option\n"
102 " and press <ENTER>. You can try <TAB><H> as well.\n"
105 "Text Box (Help Window)\n"
107 "o Use the cursor keys to scroll up/down/left/right. The VI editor\n"
108 " keys h,j,k,l function here as do <SPACE BAR> and <B> for those\n"
109 " who are familiar with less and lynx.\n"
111 "o Press <E>, <X>, <Enter> or <Esc><Esc> to exit.\n"
114 "Alternate Configuration Files\n"
115 "-----------------------------\n"
116 "Menuconfig supports the use of alternate configuration files for\n"
117 "those who, for various reasons, find it necessary to switch\n"
118 "between different kernel configurations.\n"
120 "At the end of the main menu you will find two options. One is\n"
121 "for saving the current configuration to a file of your choosing.\n"
122 "The other option is for loading a previously saved alternate\n"
125 "Even if you don't use alternate configuration files, but you\n"
126 "find during a Menuconfig session that you have completely messed\n"
127 "up your settings, you may use the \"Load Alternate...\" option to\n"
128 "restore your previously saved settings from \".config\" without\n"
129 "restarting Menuconfig.\n"
131 "Other information\n"
132 "-----------------\n"
133 "If you use Menuconfig in an XTERM window make sure you have your\n"
134 "$TERM variable set to point to a xterm definition which supports color.\n"
135 "Otherwise, Menuconfig will look rather bad. Menuconfig will not\n"
136 "display correctly in a RXVT window because rxvt displays only one\n"
137 "intensity of color, bright.\n"
139 "Menuconfig will display larger menus on screens or xterms which are\n"
140 "set to display more than the standard 25 row by 80 column geometry.\n"
141 "In order for this to work, the \"stty size\" command must be able to\n"
142 "display the screen's current row and column geometry. I STRONGLY\n"
143 "RECOMMEND that you make sure you do NOT have the shell variables\n"
144 "LINES and COLUMNS exported into your environment. Some distributions\n"
145 "export those variables via /etc/profile. Some ncurses programs can\n"
146 "become confused when those variables (LINES & COLUMNS) don't reflect\n"
147 "the true screen size.\n"
149 "Optional personality available\n"
150 "------------------------------\n"
151 "If you prefer to have all of the kernel options listed in a single\n"
152 "menu, rather than the default multimenu hierarchy, run the menuconfig\n"
153 "with MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
155 "make MENUCONFIG_MODE=single_menu menuconfig\n"
157 "<Enter> will then unroll the appropriate category, or enfold it if it\n"
158 "is already unrolled.\n"
160 "Note that this mode can eventually be a little more CPU expensive\n"
161 "(especially with a larger number of unrolled categories) than the\n"
163 menu_instructions[] = N_(
164 "Arrow keys navigate the menu. "
165 "<Enter> selects submenus --->. "
166 "Highlighted letters are hotkeys. "
167 "Pressing <Y> includes, <N> excludes, <M> modularizes features. "
168 "Press <Esc><Esc> to exit, <?> for Help, </> for Search. "
169 "Legend: [*] built-in [ ] excluded <M> module < > module capable"),
170 radiolist_instructions[] = N_(
171 "Use the arrow keys to navigate this window or "
172 "press the hotkey of the item you wish to select "
173 "followed by the <SPACE BAR>. "
174 "Press <?> for additional information about this option."),
175 inputbox_instructions_int[] = N_(
176 "Please enter a decimal value. "
177 "Fractions will not be accepted. "
178 "Use the <TAB> key to move from the input field to the buttons below it."),
179 inputbox_instructions_hex[] = N_(
180 "Please enter a hexadecimal value. "
181 "Use the <TAB> key to move from the input field to the buttons below it."),
182 inputbox_instructions_string[] = N_(
183 "Please enter a string value. "
184 "Use the <TAB> key to move from the input field to the buttons below it."),
186 "This feature depends on another which has been configured as a module.\n"
187 "As a result, this feature will be built as a module."),
189 "There is no help available for this kernel option.\n"),
190 load_config_text[] = N_(
191 "Enter the name of the configuration file you wish to load. "
192 "Accept the name shown to restore the configuration you "
193 "last retrieved. Leave blank to abort."),
194 load_config_help[] = N_(
196 "For various reasons, one may wish to keep several different kernel\n"
197 "configurations available on a single machine.\n"
199 "If you have saved a previous configuration in a file other than the\n"
200 "kernel's default, entering the name of the file here will allow you\n"
201 "to modify that configuration.\n"
203 "If you are uncertain, then you have probably never used alternate\n"
204 "configuration files. You should therefor leave this blank to abort.\n"),
205 save_config_text[] = N_(
206 "Enter a filename to which this configuration should be saved "
207 "as an alternate. Leave blank to abort."),
208 save_config_help[] = N_(
210 "For various reasons, one may wish to keep different kernel\n"
211 "configurations available on a single machine.\n"
213 "Entering a file name here will allow you to later retrieve, modify\n"
214 "and use the current configuration as an alternate to whatever\n"
215 "configuration options you have selected at that time.\n"
217 "If you are uncertain what all this means then you should probably\n"
218 "leave this blank.\n"),
221 "Search for CONFIG_ symbols and display their relations.\n"
222 "Example: search for \"^FOO\"\n"
224 "-----------------------------------------------------------------\n"
226 "Prompt: Foo bus is used to drive the bar HW\n"
227 "Defined at drivers/pci/Kconfig:47\n"
228 "Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
230 " -> Bus options (PCI, PCMCIA, EISA, MCA, ISA)\n"
231 " -> PCI support (PCI [=y])\n"
232 " -> PCI access mode (<choice> [=y])\n"
233 "Selects: LIBCRC32\n"
235 "-----------------------------------------------------------------\n"
236 "o The line 'Prompt:' shows the text used in the menu structure for\n"
237 " this CONFIG_ symbol\n"
238 "o The 'Defined at' line tell at what file / line number the symbol\n"
240 "o The 'Depends on:' line tell what symbols needs to be defined for\n"
241 " this symbol to be visible in the menu (selectable)\n"
242 "o The 'Location:' lines tell where in the menu structure this symbol\n"
244 " A location followed by a [=y] indicate that this is a selectable\n"
245 " menu item - and current value is displayed inside brackets.\n"
246 "o The 'Selects:' line tell what symbol will be automatically\n"
247 " selected if this symbol is selected (y or m)\n"
248 "o The 'Selected by' line tell what symbol has selected this symbol\n"
250 "Only relevant lines are shown.\n"
253 "Examples: USB => find all CONFIG_ symbols containing USB\n"
254 " ^USB => find all CONFIG_ symbols starting with USB\n"
255 " USB$ => find all CONFIG_ symbols ending with USB\n"
258 static char buf[4096], *bufptr = buf;
259 static char input_buf[4096];
260 static char filename[PATH_MAX+1] = ".config";
261 static char *args[1024], **argptr = args;
263 static struct termios ios_org;
264 static int rows = 0, cols = 0;
265 static struct menu *current_menu;
266 static int child_count;
267 static int do_resize;
268 static int single_menu_mode;
270 static void conf(struct menu *menu);
271 static void conf_choice(struct menu *menu);
272 static void conf_string(struct menu *menu);
273 static void conf_load(void);
274 static void conf_save(void);
275 static void show_textbox(const char *title, const char *text, int r, int c);
276 static void show_helptext(const char *title, const char *text);
277 static void show_help(struct menu *menu);
278 static void show_file(const char *filename, const char *title, int r, int c);
280 static void cprint_init(void);
281 static int cprint1(const char *fmt, ...);
282 static void cprint_done(void);
283 static int cprint(const char *fmt, ...);
285 static void init_wsize(void)
290 if (!ioctl(STDIN_FILENO, TIOCGWINSZ, &ws)) {
296 env = getenv("LINES");
303 env = getenv("COLUMNS");
310 if (rows < 19 || cols < 80) {
311 fprintf(stderr, N_("Your display is too small to run Menuconfig!\n"));
312 fprintf(stderr, N_("It must be at least 19 lines by 80 columns.\n"));
320 static void cprint_init(void)
324 memset(args, 0, sizeof(args));
327 cprint("./scripts/lxdialog/lxdialog");
328 cprint("--backtitle");
329 cprint(menu_backtitle);
332 static int cprint1(const char *fmt, ...)
340 res = vsprintf(bufptr, fmt, ap);
347 static void cprint_done(void)
353 static int cprint(const char *fmt, ...)
360 res = vsprintf(bufptr, fmt, ap);
368 static void get_prompt_str(struct gstr *r, struct property *prop)
371 struct menu *submenu[8], *menu;
373 str_printf(r, "Prompt: %s\n", prop->text);
374 str_printf(r, " Defined at %s:%d\n", prop->menu->file->name,
376 if (!expr_is_yes(prop->visible.expr)) {
377 str_append(r, " Depends on: ");
378 expr_gstr_print(prop->visible.expr, r);
381 menu = prop->menu->parent;
382 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
385 str_printf(r, " Location:\n");
386 for (j = 4; --i >= 0; j += 2) {
388 str_printf(r, "%*c-> %s", j, ' ', menu_get_prompt(menu));
390 str_printf(r, " (%s [=%s])", menu->sym->name ?
391 menu->sym->name : "<choice>",
392 sym_get_string_value(menu->sym));
399 static void get_symbol_str(struct gstr *r, struct symbol *sym)
402 struct property *prop;
404 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
405 sym_get_string_value(sym));
406 for_all_prompts(sym, prop)
407 get_prompt_str(r, prop);
409 for_all_properties(sym, prop, P_SELECT) {
411 str_append(r, " Selects: ");
414 str_printf(r, " && ");
415 expr_gstr_print(prop->expr, r);
419 if (sym->rev_dep.expr) {
420 str_append(r, " Selected by: ");
421 expr_gstr_print(sym->rev_dep.expr, r);
424 str_append(r, "\n\n");
427 static struct gstr get_relations_str(struct symbol **sym_arr)
430 struct gstr res = str_new();
433 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
434 get_symbol_str(&res, sym);
436 str_append(&res, "No matches found.\n");
442 static void winch_handler(int sig)
450 static int exec_conf(void)
452 int pipefd[2], stat, size;
454 sigset_t sset, osset;
457 sigaddset(&sset, SIGINT);
458 sigprocmask(SIG_BLOCK, &sset, &osset);
460 signal(SIGINT, SIG_DFL);
462 sa.sa_handler = winch_handler;
463 sigemptyset(&sa.sa_mask);
464 sa.sa_flags = SA_RESTART;
465 sigaction(SIGWINCH, &sa, NULL);
472 sigprocmask(SIG_SETMASK, &osset, NULL);
476 execv(args[0], args);
483 size = input_buf + sizeof(input_buf) - bufptr;
484 size = read(pipefd[0], bufptr, size);
487 if (errno == EINTR || errno == EAGAIN)
497 waitpid(pid, &stat, 0);
502 sigprocmask(SIG_SETMASK, &osset, NULL);
505 if (WIFSIGNALED(stat)) {
506 printf("\finterrupted(%d)\n", WTERMSIG(stat));
510 printf("\fexit state: %d\nexit data: '%s'\n", WEXITSTATUS(stat), input_buf);
514 if (sigismember(&sset, SIGINT)) {
515 printf("\finterrupted\n");
518 sigprocmask(SIG_SETMASK, &osset, NULL);
520 return WEXITSTATUS(stat);
523 static void search_conf(void)
525 struct symbol **sym_arr;
532 cprint(_("Search Configuration Parameter"));
533 cprint("--inputbox");
534 cprint(_("Enter Keyword"));
545 show_helptext(_("Search Configuration"), search_help);
551 sym_arr = sym_re_search(input_buf);
552 res = get_relations_str(sym_arr);
554 show_textbox(_("Search Results"), str_get(&res), 0, 0);
558 static void build_conf(struct menu *menu)
561 struct property *prop;
563 int type, tmp, doint = 2;
567 if (!menu_is_visible(menu))
573 if (prop && menu != current_menu) {
574 const char *prompt = menu_get_prompt(menu);
575 switch (prop->type) {
580 if (single_menu_mode) {
582 menu->data ? "-->" : "++>",
583 indent + 1, ' ', prompt);
585 cprint1(" %*c%s --->", indent + 1, ' ', prompt);
588 if (single_menu_mode && menu->data)
595 cprint("---%*c%s", indent + 1, ' ', prompt);
603 type = sym_get_type(sym);
604 if (sym_is_choice(sym)) {
605 struct symbol *def_sym = sym_get_choice_value(sym);
606 struct menu *def_menu = NULL;
609 for (child = menu->list; child; child = child->next) {
610 if (menu_is_visible(child) && child->sym == def_sym)
614 val = sym_get_tristate_value(sym);
615 if (sym_is_changable(sym)) {
619 cprint1("[%c]", val == no ? ' ' : '*');
623 case yes: ch = '*'; break;
624 case mod: ch = 'M'; break;
625 default: ch = ' '; break;
631 cprint("%c%p", def_menu ? 't' : ':', menu);
635 cprint1("%*c%s", indent + 1, ' ', menu_get_prompt(menu));
638 cprint1(" (%s)", menu_get_prompt(def_menu));
641 if (def_menu->list) {
643 build_conf(def_menu);
652 if (menu == current_menu) {
654 cprint("---%*c%s", indent + 1, ' ', menu_get_prompt(menu));
658 val = sym_get_tristate_value(sym);
659 if (sym_is_choice_value(sym) && val == yes) {
666 if (sym_is_changable(sym))
667 cprint1("[%c]", val == no ? ' ' : '*');
674 case yes: ch = '*'; break;
675 case mod: ch = 'M'; break;
676 default: ch = ' '; break;
678 if (sym_is_changable(sym))
685 tmp = cprint1("(%s)", sym_get_string_value(sym));
686 tmp = indent - tmp + 4;
689 cprint1("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
690 (sym_has_value(sym) || !sym_is_changable(sym)) ?
696 cprint1("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
697 (sym_has_value(sym) || !sym_is_changable(sym)) ?
699 if (menu->prompt->type == P_MENU) {
709 for (child = menu->list; child; child = child->next)
714 static void conf(struct menu *menu)
716 struct menu *submenu;
717 const char *prompt = menu_get_prompt(menu);
719 char active_entry[40];
722 unlink("lxdialog.scrltmp");
727 cprint("%s", prompt ? prompt : _("Main Menu"));
729 cprint(_(menu_instructions));
732 cprint("%d", rows - 10);
733 cprint("%s", active_entry);
738 if (menu == &rootmenu) {
742 cprint(_(" Load an Alternate Configuration File"));
744 cprint(_(" Save Configuration to an Alternate File"));
750 if (stat == 1 || stat == 255)
757 for (i = 0; input_buf[i] && !isspace(input_buf[i]); i++)
759 if (i >= sizeof(active_entry))
760 i = sizeof(active_entry) - 1;
762 strcpy(active_entry, input_buf);
766 if (sscanf(input_buf + 1, "%p", &submenu) == 1)
773 if (single_menu_mode)
774 submenu->data = (void *) (long) !submenu->data;
779 if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
780 conf_choice(submenu);
781 else if (submenu->prompt->type == P_MENU)
785 conf_string(submenu);
799 show_helptext("README", _(mconf_readme));
803 if (sym_set_tristate_value(sym, yes))
805 if (sym_set_tristate_value(sym, mod))
806 show_textbox(NULL, setmod_text, 6, 74);
811 sym_set_tristate_value(sym, no);
815 sym_set_tristate_value(sym, mod);
819 sym_toggle_tristate_value(sym);
820 else if (type == 'm')
830 static void show_textbox(const char *title, const char *text, int r, int c)
834 fd = creat(".help.tmp", 0777);
835 write(fd, text, strlen(text));
837 show_file(".help.tmp", title, r, c);
841 static void show_helptext(const char *title, const char *text)
843 show_textbox(title, text, 0, 0);
846 static void show_help(struct menu *menu)
848 struct gstr help = str_new();
849 struct symbol *sym = menu->sym;
854 str_printf(&help, "CONFIG_%s:\n\n", sym->name);
855 str_append(&help, _(sym->help));
856 str_append(&help, "\n");
859 str_append(&help, nohelp_text);
861 get_symbol_str(&help, sym);
862 show_helptext(menu_get_prompt(menu), str_get(&help));
866 static void show_file(const char *filename, const char *title, int r, int c)
875 cprint("%s", filename);
876 cprint("%d", r ? r : rows);
877 cprint("%d", c ? c : cols);
878 } while (exec_conf() < 0);
881 static void conf_choice(struct menu *menu)
883 const char *prompt = menu_get_prompt(menu);
885 struct symbol *active;
888 active = sym_get_choice_value(menu->sym);
892 cprint("%s", prompt ? prompt : _("Main Menu"));
893 cprint("--radiolist");
894 cprint(_(radiolist_instructions));
900 for (child = menu->list; child; child = child->next) {
901 if (!menu_is_visible(child))
904 cprint("%s", menu_get_prompt(child));
905 if (child->sym == sym_get_choice_value(menu->sym))
907 else if (child->sym == active)
916 if (sscanf(input_buf, "%p", &child) != 1)
918 sym_set_tristate_value(child->sym, yes);
921 if (sscanf(input_buf, "%p", &child) == 1) {
933 static void conf_string(struct menu *menu)
935 const char *prompt = menu_get_prompt(menu);
941 cprint("%s", prompt ? prompt : _("Main Menu"));
942 cprint("--inputbox");
943 switch (sym_get_type(menu->sym)) {
945 cprint(_(inputbox_instructions_int));
948 cprint(_(inputbox_instructions_hex));
951 cprint(_(inputbox_instructions_string));
958 cprint("%s", sym_get_string_value(menu->sym));
962 if (sym_set_string_value(menu->sym, input_buf))
964 show_textbox(NULL, _("You have made an invalid entry."), 5, 43);
975 static void conf_load(void)
981 cprint("--inputbox");
982 cprint(load_config_text);
985 cprint("%s", filename);
991 if (!conf_read(input_buf))
993 show_textbox(NULL, _("File does not exist!"), 5, 38);
996 show_helptext(_("Load Alternate Configuration"), load_config_help);
1004 static void conf_save(void)
1010 cprint("--inputbox");
1011 cprint(save_config_text);
1014 cprint("%s", filename);
1020 if (!conf_write(input_buf))
1022 show_textbox(NULL, _("Can't create file! Probably a nonexistent directory."), 5, 60);
1025 show_helptext(_("Save Alternate Configuration"), save_config_help);
1033 static void conf_cleanup(void)
1035 tcsetattr(1, TCSAFLUSH, &ios_org);
1036 unlink(".help.tmp");
1037 unlink("lxdialog.scrltmp");
1040 int main(int ac, char **av)
1046 setlocale(LC_ALL, "");
1047 bindtextdomain(PACKAGE, LOCALEDIR);
1048 textdomain(PACKAGE);
1053 sym = sym_lookup("KERNELRELEASE", 0);
1054 sym_calc_value(sym);
1055 sprintf(menu_backtitle, _("Linux Kernel v%s Configuration"),
1056 sym_get_string_value(sym));
1058 mode = getenv("MENUCONFIG_MODE");
1060 if (!strcasecmp(mode, "single_menu"))
1061 single_menu_mode = 1;
1064 tcgetattr(1, &ios_org);
1065 atexit(conf_cleanup);
1072 cprint(_("Do you wish to save your new kernel configuration?"));
1079 if (conf_write(NULL)) {
1080 fprintf(stderr, _("\n\n"
1081 "Error during writing of the kernel configuration.\n"
1082 "Your kernel configuration changes were NOT saved."
1087 "*** End of Linux kernel configuration.\n"
1088 "*** Execute 'make' to build the kernel or try 'make help'."
1091 fprintf(stderr, _("\n\n"
1092 "Your kernel configuration changes were NOT saved."