89b9060987
Since kernel configs provided by syzbot are close to "make allyesconfig", it takes long time to rebuild. This is especially waste of time when we need to rebuild for many times (e.g. doing manual printk() inspection, bisect operations). We can save time if we can exclude modules which are irrelevant to each problem. But "make localmodconfig" cannot exclude modules which are built into vmlinux because /sbin/lsmod output is used as the source of modules. Therefore, this patch adds "make yes2modconfig" which converts from =y to =m if possible. After confirming that the interested problem is still reproducible, we can try "make localmodconfig" (and/or manually tune based on "Modules linked in:" line) in order to exclude modules which are irrelevant to the interested problem. While we are at it, this patch also adds "make mod2yesconfig" which converts from =m to =y in case someone wants to convert from =m to =y after "make localmodconfig". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
728 lines
16 KiB
C
728 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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*/
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <errno.h>
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#include "lkc.h"
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static void conf(struct menu *menu);
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static void check_conf(struct menu *menu);
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enum input_mode {
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oldaskconfig,
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syncconfig,
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oldconfig,
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allnoconfig,
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allyesconfig,
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allmodconfig,
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alldefconfig,
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randconfig,
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defconfig,
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savedefconfig,
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listnewconfig,
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helpnewconfig,
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olddefconfig,
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yes2modconfig,
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mod2yesconfig,
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};
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static enum input_mode input_mode = oldaskconfig;
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static int indent = 1;
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static int tty_stdio;
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static int sync_kconfig;
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static int conf_cnt;
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static char line[PATH_MAX];
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static struct menu *rootEntry;
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static void print_help(struct menu *menu)
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{
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struct gstr help = str_new();
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menu_get_ext_help(menu, &help);
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printf("\n%s\n", str_get(&help));
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str_free(&help);
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}
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static void strip(char *str)
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{
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char *p = str;
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int l;
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while ((isspace(*p)))
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p++;
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l = strlen(p);
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if (p != str)
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memmove(str, p, l + 1);
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if (!l)
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return;
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p = str + l - 1;
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while ((isspace(*p)))
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*p-- = 0;
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}
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/* Helper function to facilitate fgets() by Jean Sacren. */
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static void xfgets(char *str, int size, FILE *in)
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{
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if (!fgets(str, size, in))
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fprintf(stderr, "\nError in reading or end of file.\n");
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if (!tty_stdio)
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printf("%s", str);
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}
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static int conf_askvalue(struct symbol *sym, const char *def)
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{
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enum symbol_type type = sym_get_type(sym);
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if (!sym_has_value(sym))
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printf("(NEW) ");
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line[0] = '\n';
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line[1] = 0;
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if (!sym_is_changeable(sym)) {
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printf("%s\n", def);
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line[0] = '\n';
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line[1] = 0;
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return 0;
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}
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switch (input_mode) {
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case oldconfig:
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case syncconfig:
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if (sym_has_value(sym)) {
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printf("%s\n", def);
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return 0;
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}
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/* fall through */
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case oldaskconfig:
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fflush(stdout);
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xfgets(line, sizeof(line), stdin);
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return 1;
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default:
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break;
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}
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switch (type) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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printf("%s\n", def);
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return 1;
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default:
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;
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}
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printf("%s", line);
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return 1;
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}
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static int conf_string(struct menu *menu)
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{
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struct symbol *sym = menu->sym;
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const char *def;
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while (1) {
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printf("%*s%s ", indent - 1, "", menu->prompt->text);
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printf("(%s) ", sym->name);
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def = sym_get_string_value(sym);
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if (sym_get_string_value(sym))
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printf("[%s] ", def);
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if (!conf_askvalue(sym, def))
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return 0;
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switch (line[0]) {
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case '\n':
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break;
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case '?':
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/* print help */
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if (line[1] == '\n') {
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print_help(menu);
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def = NULL;
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break;
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}
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/* fall through */
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default:
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line[strlen(line)-1] = 0;
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def = line;
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}
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if (def && sym_set_string_value(sym, def))
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return 0;
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}
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}
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static int conf_sym(struct menu *menu)
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{
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struct symbol *sym = menu->sym;
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tristate oldval, newval;
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while (1) {
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printf("%*s%s ", indent - 1, "", menu->prompt->text);
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if (sym->name)
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printf("(%s) ", sym->name);
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putchar('[');
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oldval = sym_get_tristate_value(sym);
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switch (oldval) {
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case no:
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putchar('N');
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break;
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case mod:
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putchar('M');
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break;
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case yes:
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putchar('Y');
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break;
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}
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if (oldval != no && sym_tristate_within_range(sym, no))
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printf("/n");
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if (oldval != mod && sym_tristate_within_range(sym, mod))
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printf("/m");
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if (oldval != yes && sym_tristate_within_range(sym, yes))
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printf("/y");
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printf("/?] ");
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if (!conf_askvalue(sym, sym_get_string_value(sym)))
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return 0;
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strip(line);
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switch (line[0]) {
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case 'n':
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case 'N':
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newval = no;
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if (!line[1] || !strcmp(&line[1], "o"))
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break;
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continue;
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case 'm':
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case 'M':
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newval = mod;
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if (!line[1])
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break;
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continue;
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case 'y':
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case 'Y':
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newval = yes;
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if (!line[1] || !strcmp(&line[1], "es"))
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break;
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continue;
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case 0:
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newval = oldval;
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break;
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case '?':
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goto help;
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default:
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continue;
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}
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if (sym_set_tristate_value(sym, newval))
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return 0;
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help:
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print_help(menu);
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}
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}
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static int conf_choice(struct menu *menu)
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{
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struct symbol *sym, *def_sym;
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struct menu *child;
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bool is_new;
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sym = menu->sym;
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is_new = !sym_has_value(sym);
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if (sym_is_changeable(sym)) {
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conf_sym(menu);
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sym_calc_value(sym);
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switch (sym_get_tristate_value(sym)) {
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case no:
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return 1;
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case mod:
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return 0;
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case yes:
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break;
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}
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} else {
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switch (sym_get_tristate_value(sym)) {
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case no:
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return 1;
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case mod:
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printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
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return 0;
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case yes:
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break;
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}
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}
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while (1) {
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int cnt, def;
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printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
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def_sym = sym_get_choice_value(sym);
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cnt = def = 0;
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line[0] = 0;
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for (child = menu->list; child; child = child->next) {
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if (!menu_is_visible(child))
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continue;
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if (!child->sym) {
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printf("%*c %s\n", indent, '*', menu_get_prompt(child));
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continue;
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}
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cnt++;
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if (child->sym == def_sym) {
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def = cnt;
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printf("%*c", indent, '>');
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} else
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printf("%*c", indent, ' ');
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printf(" %d. %s", cnt, menu_get_prompt(child));
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if (child->sym->name)
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printf(" (%s)", child->sym->name);
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if (!sym_has_value(child->sym))
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printf(" (NEW)");
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printf("\n");
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}
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printf("%*schoice", indent - 1, "");
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if (cnt == 1) {
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printf("[1]: 1\n");
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goto conf_childs;
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}
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printf("[1-%d?]: ", cnt);
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switch (input_mode) {
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case oldconfig:
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case syncconfig:
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if (!is_new) {
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cnt = def;
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printf("%d\n", cnt);
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break;
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}
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/* fall through */
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case oldaskconfig:
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fflush(stdout);
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xfgets(line, sizeof(line), stdin);
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strip(line);
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if (line[0] == '?') {
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print_help(menu);
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continue;
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}
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if (!line[0])
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cnt = def;
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else if (isdigit(line[0]))
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cnt = atoi(line);
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else
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continue;
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break;
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default:
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break;
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}
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conf_childs:
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for (child = menu->list; child; child = child->next) {
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if (!child->sym || !menu_is_visible(child))
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continue;
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if (!--cnt)
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break;
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}
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if (!child)
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continue;
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if (line[0] && line[strlen(line) - 1] == '?') {
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print_help(child);
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continue;
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}
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sym_set_choice_value(sym, child->sym);
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for (child = child->list; child; child = child->next) {
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indent += 2;
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conf(child);
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indent -= 2;
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}
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return 1;
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}
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}
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static void conf(struct menu *menu)
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{
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struct symbol *sym;
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struct property *prop;
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struct menu *child;
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if (!menu_is_visible(menu))
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return;
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sym = menu->sym;
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prop = menu->prompt;
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if (prop) {
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const char *prompt;
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switch (prop->type) {
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case P_MENU:
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/*
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* Except in oldaskconfig mode, we show only menus that
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* contain new symbols.
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*/
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if (input_mode != oldaskconfig && rootEntry != menu) {
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check_conf(menu);
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return;
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}
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/* fall through */
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case P_COMMENT:
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prompt = menu_get_prompt(menu);
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if (prompt)
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printf("%*c\n%*c %s\n%*c\n",
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indent, '*',
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indent, '*', prompt,
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indent, '*');
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default:
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;
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}
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}
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if (!sym)
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goto conf_childs;
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if (sym_is_choice(sym)) {
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conf_choice(menu);
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if (sym->curr.tri != mod)
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return;
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goto conf_childs;
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}
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switch (sym->type) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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conf_string(menu);
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break;
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default:
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conf_sym(menu);
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break;
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}
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conf_childs:
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if (sym)
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indent += 2;
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for (child = menu->list; child; child = child->next)
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conf(child);
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if (sym)
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indent -= 2;
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}
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static void check_conf(struct menu *menu)
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{
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struct symbol *sym;
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struct menu *child;
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if (!menu_is_visible(menu))
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return;
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sym = menu->sym;
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if (sym && !sym_has_value(sym)) {
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if (sym_is_changeable(sym) ||
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(sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
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if (input_mode == listnewconfig) {
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if (sym->name) {
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const char *str;
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if (sym->type == S_STRING) {
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str = sym_get_string_value(sym);
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str = sym_escape_string_value(str);
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printf("%s%s=%s\n", CONFIG_, sym->name, str);
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free((void *)str);
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} else {
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str = sym_get_string_value(sym);
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printf("%s%s=%s\n", CONFIG_, sym->name, str);
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}
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}
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} else if (input_mode == helpnewconfig) {
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printf("-----\n");
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print_help(menu);
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printf("-----\n");
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} else {
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if (!conf_cnt++)
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printf("*\n* Restart config...\n*\n");
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rootEntry = menu_get_parent_menu(menu);
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conf(rootEntry);
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}
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}
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}
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for (child = menu->list; child; child = child->next)
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check_conf(child);
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}
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static struct option long_opts[] = {
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{"oldaskconfig", no_argument, NULL, oldaskconfig},
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{"oldconfig", no_argument, NULL, oldconfig},
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{"syncconfig", no_argument, NULL, syncconfig},
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{"defconfig", required_argument, NULL, defconfig},
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{"savedefconfig", required_argument, NULL, savedefconfig},
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{"allnoconfig", no_argument, NULL, allnoconfig},
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{"allyesconfig", no_argument, NULL, allyesconfig},
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{"allmodconfig", no_argument, NULL, allmodconfig},
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{"alldefconfig", no_argument, NULL, alldefconfig},
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{"randconfig", no_argument, NULL, randconfig},
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{"listnewconfig", no_argument, NULL, listnewconfig},
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{"helpnewconfig", no_argument, NULL, helpnewconfig},
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{"olddefconfig", no_argument, NULL, olddefconfig},
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{"yes2modconfig", no_argument, NULL, yes2modconfig},
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{"mod2yesconfig", no_argument, NULL, mod2yesconfig},
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{NULL, 0, NULL, 0}
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};
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static void conf_usage(const char *progname)
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{
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printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
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printf("[option] is _one_ of the following:\n");
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printf(" --listnewconfig List new options\n");
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printf(" --helpnewconfig List new options and help text\n");
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printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
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printf(" --oldconfig Update a configuration using a provided .config as base\n");
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printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
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" include/{generated/,config/}\n");
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printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
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printf(" --defconfig <file> New config with default defined in <file>\n");
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printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
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printf(" --allnoconfig New config where all options are answered with no\n");
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printf(" --allyesconfig New config where all options are answered with yes\n");
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printf(" --allmodconfig New config where all options are answered with mod\n");
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printf(" --alldefconfig New config with all symbols set to default\n");
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printf(" --randconfig New config with random answer to all options\n");
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printf(" --yes2modconfig Change answers from yes to mod if possible\n");
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printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
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}
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int main(int ac, char **av)
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{
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const char *progname = av[0];
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int opt;
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const char *name, *defconfig_file = NULL /* gcc uninit */;
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int no_conf_write = 0;
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tty_stdio = isatty(0) && isatty(1);
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while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) {
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if (opt == 's') {
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conf_set_message_callback(NULL);
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continue;
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}
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input_mode = (enum input_mode)opt;
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switch (opt) {
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case syncconfig:
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/*
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* syncconfig is invoked during the build stage.
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* Suppress distracting "configuration written to ..."
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*/
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conf_set_message_callback(NULL);
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sync_kconfig = 1;
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break;
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case defconfig:
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case savedefconfig:
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defconfig_file = optarg;
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break;
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case randconfig:
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{
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struct timeval now;
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unsigned int seed;
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char *seed_env;
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/*
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* Use microseconds derived seed,
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* compensate for systems where it may be zero
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*/
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gettimeofday(&now, NULL);
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seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
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seed_env = getenv("KCONFIG_SEED");
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if( seed_env && *seed_env ) {
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char *endp;
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int tmp = (int)strtol(seed_env, &endp, 0);
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if (*endp == '\0') {
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seed = tmp;
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}
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}
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fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
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srand(seed);
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break;
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}
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|
case oldaskconfig:
|
|
case oldconfig:
|
|
case allnoconfig:
|
|
case allyesconfig:
|
|
case allmodconfig:
|
|
case alldefconfig:
|
|
case listnewconfig:
|
|
case helpnewconfig:
|
|
case olddefconfig:
|
|
case yes2modconfig:
|
|
case mod2yesconfig:
|
|
break;
|
|
case '?':
|
|
conf_usage(progname);
|
|
exit(1);
|
|
break;
|
|
}
|
|
}
|
|
if (ac == optind) {
|
|
fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
|
|
conf_usage(progname);
|
|
exit(1);
|
|
}
|
|
name = av[optind];
|
|
conf_parse(name);
|
|
//zconfdump(stdout);
|
|
|
|
switch (input_mode) {
|
|
case defconfig:
|
|
if (conf_read(defconfig_file)) {
|
|
fprintf(stderr,
|
|
"***\n"
|
|
"*** Can't find default configuration \"%s\"!\n"
|
|
"***\n",
|
|
defconfig_file);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case savedefconfig:
|
|
case syncconfig:
|
|
case oldaskconfig:
|
|
case oldconfig:
|
|
case listnewconfig:
|
|
case helpnewconfig:
|
|
case olddefconfig:
|
|
case yes2modconfig:
|
|
case mod2yesconfig:
|
|
conf_read(NULL);
|
|
break;
|
|
case allnoconfig:
|
|
case allyesconfig:
|
|
case allmodconfig:
|
|
case alldefconfig:
|
|
case randconfig:
|
|
name = getenv("KCONFIG_ALLCONFIG");
|
|
if (!name)
|
|
break;
|
|
if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
|
|
if (conf_read_simple(name, S_DEF_USER)) {
|
|
fprintf(stderr,
|
|
"*** Can't read seed configuration \"%s\"!\n",
|
|
name);
|
|
exit(1);
|
|
}
|
|
break;
|
|
}
|
|
switch (input_mode) {
|
|
case allnoconfig: name = "allno.config"; break;
|
|
case allyesconfig: name = "allyes.config"; break;
|
|
case allmodconfig: name = "allmod.config"; break;
|
|
case alldefconfig: name = "alldef.config"; break;
|
|
case randconfig: name = "allrandom.config"; break;
|
|
default: break;
|
|
}
|
|
if (conf_read_simple(name, S_DEF_USER) &&
|
|
conf_read_simple("all.config", S_DEF_USER)) {
|
|
fprintf(stderr,
|
|
"*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
|
|
name);
|
|
exit(1);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (sync_kconfig) {
|
|
name = getenv("KCONFIG_NOSILENTUPDATE");
|
|
if (name && *name) {
|
|
if (conf_get_changed()) {
|
|
fprintf(stderr,
|
|
"\n*** The configuration requires explicit update.\n\n");
|
|
return 1;
|
|
}
|
|
no_conf_write = 1;
|
|
}
|
|
}
|
|
|
|
switch (input_mode) {
|
|
case allnoconfig:
|
|
conf_set_all_new_symbols(def_no);
|
|
break;
|
|
case allyesconfig:
|
|
conf_set_all_new_symbols(def_yes);
|
|
break;
|
|
case allmodconfig:
|
|
conf_set_all_new_symbols(def_mod);
|
|
break;
|
|
case alldefconfig:
|
|
conf_set_all_new_symbols(def_default);
|
|
break;
|
|
case randconfig:
|
|
/* Really nothing to do in this loop */
|
|
while (conf_set_all_new_symbols(def_random)) ;
|
|
break;
|
|
case defconfig:
|
|
conf_set_all_new_symbols(def_default);
|
|
break;
|
|
case savedefconfig:
|
|
break;
|
|
case yes2modconfig:
|
|
conf_rewrite_mod_or_yes(def_y2m);
|
|
break;
|
|
case mod2yesconfig:
|
|
conf_rewrite_mod_or_yes(def_m2y);
|
|
break;
|
|
case oldaskconfig:
|
|
rootEntry = &rootmenu;
|
|
conf(&rootmenu);
|
|
input_mode = oldconfig;
|
|
/* fall through */
|
|
case oldconfig:
|
|
case listnewconfig:
|
|
case helpnewconfig:
|
|
case syncconfig:
|
|
/* Update until a loop caused no more changes */
|
|
do {
|
|
conf_cnt = 0;
|
|
check_conf(&rootmenu);
|
|
} while (conf_cnt);
|
|
break;
|
|
case olddefconfig:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (input_mode == savedefconfig) {
|
|
if (conf_write_defconfig(defconfig_file)) {
|
|
fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
|
|
defconfig_file);
|
|
return 1;
|
|
}
|
|
} else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
|
|
if (!no_conf_write && conf_write(NULL)) {
|
|
fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Create auto.conf if it does not exist.
|
|
* This prevents GNU Make 4.1 or older from emitting
|
|
* "include/config/auto.conf: No such file or directory"
|
|
* in the top-level Makefile
|
|
*
|
|
* syncconfig always creates or updates auto.conf because it is
|
|
* used during the build.
|
|
*/
|
|
if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
|
|
fprintf(stderr,
|
|
"\n*** Error during sync of the configuration.\n\n");
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|