util/kconfig: Uprev to Linux 5.17's kconfig

Another upstream refactoring, another local patch gone!

TEST=`util/abuild/abuild -C` output (build.h and build.conf) remains
the same

Change-Id: I0f99dcbd8ecc7256551f0a6e2c83c060cb1999b6
Signed-off-by: Patrick Georgi <patrick@coreboot.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66046
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>

util/kconfig/Makefile

@@ -69,7 +69,7 @@ localyesconfig localmodconfig: $(obj)/conf
 #  deprecated for external use
 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
 	alldefconfig randconfig listnewconfig olddefconfig syncconfig \
-	helpnewconfig yes2modconfig mod2yesconfig
+	helpnewconfig yes2modconfig mod2yesconfig mod2noconfig
 
 PHONY += $(simple-targets)
 
@@ -134,6 +134,7 @@ help:
 	@echo  '  randconfig	  - New config with random answer to all options'
 	@echo  '  yes2modconfig	  - Change answers from yes to mod if possible'
 	@echo  '  mod2yesconfig	  - Change answers from mod to yes if possible'
+	@echo  '  mod2noconfig	  - Change answers from mod to no if possible'
 	@echo  '  listnewconfig   - List new options'
 	@echo  '  helpnewconfig   - List new options and help text'
 	@echo  '  olddefconfig	  - Same as oldconfig but sets new symbols to their'

util/kconfig/conf.c

@@ -37,6 +37,7 @@ enum input_mode {
 	olddefconfig,
 	yes2modconfig,
 	mod2yesconfig,
+	mod2noconfig,
 };
 static enum input_mode input_mode = oldaskconfig;
 static int input_mode_opt;
@@ -165,8 +166,6 @@ enum conf_def_mode {
 	def_default,
 	def_yes,
 	def_mod,
-	def_y2m,
-	def_m2y,
 	def_no,
 	def_random
 };
@@ -304,12 +303,10 @@ static bool conf_set_all_new_symbols(enum conf_def_mode mode)
 	return has_changed;
 }
 
-static void conf_rewrite_mod_or_yes(enum conf_def_mode mode)
+static void conf_rewrite_tristates(tristate old_val, tristate new_val)
 {
 	struct symbol *sym;
 	int i;
-	tristate old_val = (mode == def_y2m) ? yes : mod;
-	tristate new_val = (mode == def_y2m) ? mod : yes;
 
 	for_all_symbols(i, sym) {
 		if (sym_get_type(sym) == S_TRISTATE &&
@@ -687,6 +684,7 @@ static const struct option long_opts[] = {
 	{"olddefconfig",  no_argument,       &input_mode_opt, olddefconfig},
 	{"yes2modconfig", no_argument,       &input_mode_opt, yes2modconfig},
 	{"mod2yesconfig", no_argument,       &input_mode_opt, mod2yesconfig},
+	{"mod2noconfig",  no_argument,       &input_mode_opt, mod2noconfig},
 	{NULL, 0, NULL, 0}
 };
 
@@ -715,6 +713,7 @@ static void conf_usage(const char *progname)
 	printf("  --randconfig            New config with random answer to all options\n");
 	printf("  --yes2modconfig         Change answers from yes to mod if possible\n");
 	printf("  --mod2yesconfig         Change answers from mod to yes if possible\n");
+	printf("  --mod2noconfig          Change answers from mod to no if possible\n");
 	printf("  (If none of the above is given, --oldaskconfig is the default)\n");
 }
 
@@ -791,6 +790,7 @@ int main(int ac, char **av)
 	case olddefconfig:
 	case yes2modconfig:
 	case mod2yesconfig:
+	case mod2noconfig:
 		conf_read(NULL);
 		break;
 	case allnoconfig:
@@ -872,10 +872,13 @@ int main(int ac, char **av)
 	case savedefconfig:
 		break;
 	case yes2modconfig:
-		conf_rewrite_mod_or_yes(def_y2m);
+		conf_rewrite_tristates(yes, mod);
 		break;
 	case mod2yesconfig:
-		conf_rewrite_mod_or_yes(def_m2y);
+		conf_rewrite_tristates(mod, yes);
+		break;
+	case mod2noconfig:
+		conf_rewrite_tristates(mod, no);
 		break;
 	case oldaskconfig:
 		rootEntry = &rootmenu;

util/kconfig/confdata.c

@@ -230,13 +230,6 @@ static const char *conf_get_autoheader_name(void)
 	return name ? name : "include/generated/autoconf.h";
 }
 
-static const char *conf_get_autobase_name(void)
-{
-	char *name = getenv("KCONFIG_SPLITCONFIG");
-
-	return name ? name : "include/config/";
-}
-
 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 {
 	char *p2;
@@ -265,6 +258,8 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 				     p, sym->name);
 		return 1;
 	case S_STRING:
+		/* No escaping for S_DEF_AUTO (include/config/auto.conf) */
+		if (def != S_DEF_AUTO) {
 			if (*p++ != '"')
 				break;
 			for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
@@ -275,10 +270,10 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 				memmove(p2, p2 + 1, strlen(p2));
 			}
 			if (!p2) {
-			if (def != S_DEF_AUTO)
 				conf_warning("invalid string found");
 				return 1;
 			}
+		}
 		/* fall through */
 	case S_INT:
 	case S_HEX:
@@ -732,7 +727,7 @@ static void print_symbol_for_autoconf(FILE *fp, struct symbol *sym)
 	if (print_negatives) {
 		out = OUTPUT_N;
 	}
-	__print_symbol(fp, sym, out, true);
+	__print_symbol(fp, sym, out, false);
 }
 
 void print_symbol_for_listconfig(struct symbol *sym)
@@ -1019,10 +1014,10 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)
 
 	fprintf(out, "\n$(deps_config): ;\n");
 
-	if (ferror(out)) /* error check for all fprintf() calls */
-		return -1;
-
+	ret = ferror(out); /* error check for all fprintf() calls */
 	fclose(out);
+	if (ret)
+		return -1;
 
 	if (rename(tmp, name)) {
 		perror("rename");
@@ -1034,14 +1029,19 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)
 
 static int conf_touch_deps(void)
 {
-	const char *name;
+	const char *name, *tmp;
 	struct symbol *sym;
 	int res, i;
 
-	strcpy(depfile_path, conf_get_autobase_name());
-	depfile_prefix_len = strlen(depfile_path);
-
 	name = conf_get_autoconfig_name();
+	tmp = strrchr(name, '/');
+	depfile_prefix_len = tmp ? tmp - name + 1 : 0;
+	if (depfile_prefix_len + 1 > sizeof(depfile_path))
+		return -1;
+
+	strncpy(depfile_path, name, depfile_prefix_len);
+	depfile_path[depfile_prefix_len] = 0;
+
 	conf_read_simple(name, S_DEF_AUTO);
 	sym_calc_value(modules_sym);
 
@@ -1134,10 +1134,10 @@ static int __conf_write_autoconf(const char *filename,
 			print_symbol(file, sym);
 
 	/* check possible errors in conf_write_heading() and print_symbol() */
-	if (ferror(file))
-		return -1;
-
+	ret = ferror(file);
 	fclose(file);
+	if (ret)
+		return -1;
 
 	if (rename(tmp, filename)) {
 		perror("rename");

util/kconfig/patches/0001-Kconfig-Add-KCONFIG_STRICT-mode.patch

@@ -19,7 +19,7 @@ Index: kconfig/confdata.c
 ===================================================================
 --- kconfig.orig/confdata.c
 +++ kconfig/confdata.c
-@@ -428,6 +428,7 @@ load:
+@@ -430,6 +430,7 @@ load:
  			if (def == S_DEF_USER) {
  				sym = sym_find(line + 2 + strlen(CONFIG_));
  				if (!sym) {
@@ -27,7 +27,7 @@ Index: kconfig/confdata.c
  					conf_set_changed(true);
  					continue;
  				}
-@@ -510,6 +511,13 @@ load:
+@@ -512,6 +513,13 @@ load:
  	}
  	free(line);
  	fclose(in);

util/kconfig/patches/0002-Kconfig-Change-symbol-override-from-warning-to-notic.patch

@@ -40,7 +40,7 @@ Index: kconfig/confdata.c
  static void conf_default_message_callback(const char *s)
  {
  	printf("#\n# ");
-@@ -438,7 +448,7 @@ load:
+@@ -440,7 +450,7 @@ load:
  					sym->type = S_BOOLEAN;
  			}
  			if (sym->flags & def_flags) {
@@ -49,7 +49,7 @@ Index: kconfig/confdata.c
  			}
  			switch (sym->type) {
  			case S_BOOLEAN:
-@@ -477,7 +487,7 @@ load:
+@@ -479,7 +489,7 @@ load:
  			}
  
  			if (sym->flags & def_flags) {
@@ -58,7 +58,7 @@ Index: kconfig/confdata.c
  			}
  			if (conf_set_sym_val(sym, def, def_flags, p))
  				continue;
-@@ -502,7 +512,7 @@ load:
+@@ -504,7 +514,7 @@ load:
  				break;
  			case yes:
  				if (cs->def[def].tri != no)

util/kconfig/patches/0003-util-kconfig-conf.c-Fix-newline-in-error-printf.patch

@@ -14,7 +14,7 @@ Index: kconfig/conf.c
 ===================================================================
 --- kconfig.orig/conf.c
 +++ kconfig/conf.c
-@@ -889,7 +889,7 @@ int main(int ac, char **av)
+@@ -892,7 +892,7 @@ int main(int ac, char **av)
  
  	if (input_mode == savedefconfig) {
  		if (conf_write_defconfig(defconfig_file)) {

util/kconfig/patches/0005-util-kconfig-Ignore-extra-symbols-in-configs-instead.patch

@@ -24,7 +24,7 @@ Index: kconfig/confdata.c
 ===================================================================
 --- kconfig.orig/confdata.c
 +++ kconfig/confdata.c
-@@ -438,7 +438,9 @@ load:
+@@ -440,7 +440,9 @@ load:
  			if (def == S_DEF_USER) {
  				sym = sym_find(line + 2 + strlen(CONFIG_));
  				if (!sym) {

util/kconfig/patches/0007-kconfig-Allow-KCONFIG_STRICT-outside-of-confdata.c.patch

@@ -36,7 +36,7 @@ Index: kconfig/conf.c
  static void conf(struct menu *menu);
  static void check_conf(struct menu *menu);
  
-@@ -721,6 +723,7 @@ int main(int ac, char **av)
+@@ -720,6 +722,7 @@ int main(int ac, char **av)
  	const char *progname = av[0];
  	int opt;
  	const char *name, *defconfig_file = NULL /* gcc uninit */;
@@ -62,7 +62,7 @@ Index: kconfig/confdata.c
 ===================================================================
 --- kconfig.orig/confdata.c
 +++ kconfig/confdata.c
-@@ -528,11 +528,7 @@ load:
+@@ -530,11 +530,7 @@ load:
  	free(line);
  	fclose(in);
  

util/kconfig/patches/0009-util-kconfig-Allow-emitting-false-booleans-into-kconfig-output.patch

@@ -27,21 +27,21 @@ Index: kconfig/confdata.c
 ===================================================================
 --- kconfig.orig/confdata.c
 +++ kconfig/confdata.c
-@@ -720,7 +720,12 @@ static void print_symbol_for_dotconfig(F
+@@ -722,7 +722,12 @@ static void print_symbol_for_dotconfig(F
  
  static void print_symbol_for_autoconf(FILE *fp, struct symbol *sym)
  {
--	__print_symbol(fp, sym, OUTPUT_N_NONE, true);
+-	__print_symbol(fp, sym, OUTPUT_N_NONE, false);
 +	int print_negatives = getenv("KCONFIG_NEGATIVES") != NULL;
 +	enum output_n out = OUTPUT_N_NONE;
 +	if (print_negatives) {
 +		out = OUTPUT_N;
 +	}
-+	__print_symbol(fp, sym, out, true);
++	__print_symbol(fp, sym, out, false);
  }
  
  void print_symbol_for_listconfig(struct symbol *sym)
-@@ -745,6 +750,10 @@ static void print_symbol_for_c(FILE *fp,
+@@ -747,6 +752,10 @@ static void print_symbol_for_c(FILE *fp,
  	case S_TRISTATE:
  		switch (*val) {
  		case 'n':
@@ -52,7 +52,7 @@ Index: kconfig/confdata.c
  			return;
  		case 'm':
  			sym_suffix = "_MODULE";
-@@ -756,6 +765,12 @@ static void print_symbol_for_c(FILE *fp,
+@@ -758,6 +767,12 @@ static void print_symbol_for_c(FILE *fp,
  	case S_HEX:
  		if (val[0] != '0' || (val[1] != 'x' && val[1] != 'X'))
  			val_prefix = "0x";
@@ -65,7 +65,7 @@ Index: kconfig/confdata.c
  		break;
  	case S_STRING:
  		escaped = escape_string_value(val);
-@@ -1106,8 +1121,9 @@ static int __conf_write_autoconf(const c
+@@ -1113,8 +1128,9 @@ static int __conf_write_autoconf(const c
  
  	conf_write_heading(file, comment_style);
  

util/kconfig/patches/0011-remove-include-config-hardcodes.patch

@@ -1,27 +0,0 @@
-Index: kconfig/confdata.c
-===================================================================
---- kconfig.orig/confdata.c
-+++ kconfig/confdata.c
-@@ -230,6 +230,13 @@ static const char *conf_get_autoheader_n
- 	return name ? name : "include/generated/autoconf.h";
- }
- 
-+static const char *conf_get_autobase_name(void)
-+{
-+	char *name = getenv("KCONFIG_SPLITCONFIG");
-+
-+	return name ? name : "include/config/";
-+}
-+
- static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
- {
- 	char *p2;
-@@ -1031,7 +1038,7 @@ static int conf_touch_deps(void)
- 	struct symbol *sym;
- 	int res, i;
- 
--	strcpy(depfile_path, "include/config/");
-+	strcpy(depfile_path, conf_get_autobase_name());
- 	depfile_prefix_len = strlen(depfile_path);
- 
- 	name = conf_get_autoconfig_name();

util/kconfig/patches/series

@@ -8,5 +8,4 @@
 0008-kconfig-Add-wildcard-support-for-source.patch
 0009-util-kconfig-Allow-emitting-false-booleans-into-kconfig-output.patch
 0010-reenable-source-in-choice.patch
-0011-remove-include-config-hardcodes.patch
 0013-util-kconfig-detect-ncurses-on-FreeBSD.patch

util/kconfig/preprocess.c

@@ -141,7 +141,7 @@ static char *do_lineno(int argc, char *argv[])
 static char *do_shell(int argc, char *argv[])
 {
 	FILE *p;
-	char buf[256];
+	char buf[4096];
 	char *cmd;
 	size_t nread;
 	int i;

util/kconfig/streamline_config.pl

@@ -170,7 +170,7 @@ sub read_kconfig {
 	$source =~ s/\$\($env\)/$ENV{$env}/;
     }
 
-    open(my $kinfile, '<', $source) || die "Can't open $kconfig";
+    open(my $kinfile, '<', $source) || die "Can't open $source";
     while (<$kinfile>) {
 	chomp;