Release 4.10 scripts/kconfig/confdata.c

/*
 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
 * Released under the terms of the GNU GPL v2.0.
 */

#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#include "lkc.h"


struct conf_printer {
	
void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
	
void (*print_comment)(FILE *, const char *, void *);
};

static void conf_warning(const char *fmt, ...)
	__attribute__ ((format (printf, 1, 2)));

static void conf_message(const char *fmt, ...)
	__attribute__ ((format (printf, 1, 2)));


static const char *conf_filename;



static int conf_lineno, conf_warnings, conf_unsaved;


const char conf_defname[] = "arch/$ARCH/defconfig";



static void conf_warning(const char *fmt, ...)
{
	va_list ap;
	va_start(ap, fmt);
	fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, "\n");
	va_end(ap);
	conf_warnings++;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
roman zippel
roman zippel
58
100.00%
1
100.00%
Total
58
100.00%
1
100.00%



static void conf_default_message_callback(const char *fmt, va_list ap)
{
	printf("#\n# ");
	vprintf(fmt, ap);
	printf("\n#\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
michal marek
michal marek
31
100.00%
1
100.00%
Total
31
100.00%
1
100.00%


static void (*conf_message_callback) (const char *fmt, va_list ap) =
	conf_default_message_callback;


void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
{
	conf_message_callback = fn;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
michal marek
michal marek
24
100.00%
1
100.00%
Total
24
100.00%
1
100.00%



static void conf_message(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	if (conf_message_callback)
		conf_message_callback(fmt, ap);
	va_end(ap);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
michal marek
michal marek
34
87.18%
1
50.00%
colin king
colin king
5
12.82%
1
50.00%
Total
39
100.00%
2
100.00%



const char *conf_get_configname(void)
{
	char *name = getenv("KCONFIG_CONFIG");

	return name ? name : ".config";
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
roman zippel
roman zippel
25
100.00%
1
100.00%
Total
25
100.00%
1
100.00%



const char *conf_get_autoconfig_name(void)
{
	char *name = getenv("KCONFIG_AUTOCONFIG");

	return name ? name : "include/config/auto.conf";
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
markus heidelberg
markus heidelberg
25
100.00%
1
100.00%
Total
25
100.00%
1
100.00%



static char *conf_expand_value(const char *in)
{
	struct symbol *sym;
	const char *src;
	static char res_value[SYMBOL_MAXLENGTH];
	char *dst, name[SYMBOL_MAXLENGTH];

	res_value[0] = 0;
	dst = name;
	while ((src = strchr(in, '$'))) {
		strncat(res_value, in, src - in);
		src++;
		dst = name;
		while (isalnum(*src) || *src == '_')
			*dst++ = *src++;
		*dst = 0;
		sym = sym_lookup(name, 0);
		sym_calc_value(sym);
		strcat(res_value, sym_get_string_value(sym));
		in = src;
	}
	strcat(res_value, in);

	return res_value;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
roman zippel
roman zippel
146
100.00%
1
100.00%
Total
146
100.00%
1
100.00%



char *conf_get_default_confname(void)
{
	struct stat buf;
	static char fullname[PATH_MAX+1];
	char *env, *name;

	name = conf_expand_value(conf_defname);
	env = getenv(SRCTREE);
	if (env) {
		sprintf(fullname, "%s/%s", env, name);
		if (!stat(fullname, &buf))
			return fullname;
	}
	return name;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
roman zippel
roman zippel
76
100.00%
2
100.00%
Total
76
100.00%
2
100.00%



static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
{
	char *p2;

	switch (sym->type) {
	case S_TRISTATE:
		if (p[0] == 'm') {
			sym->def[def].tri = mod;
			sym->flags |= def_flags;
			break;
		}
		/* fall through */
	case S_BOOLEAN:
		if (p[0] == 'y') {
			sym->def[def].tri = yes;
			sym->flags |= def_flags;
			break;
		}
		if (p[0] == 'n') {
			sym->def[def].tri = no;
			sym->flags |= def_flags;
			break;
		}
		if (def != S_DEF_AUTO)
			conf_warning("symbol value '%s' invalid for %s",
				     p, sym->name);
		return 1;
	case S_OTHER:
		if (*p != '"') {
			for (p2 = p; *p2 && !isspace(*p2); p2++)
				;
			sym->type = S_STRING;
			goto done;
		}
		/* fall through */
	case S_STRING:
		if (*p++ != '"')
			break;
		for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
			if (*p2 == '"') {
				*p2 = 0;
				break;
			}
			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:
	done:
		if (sym_string_valid(sym, p)) {
			sym->def[def].val = strdup(p);
			sym->flags |= def_flags;
		} else {
			if (def != S_DEF_AUTO)
				conf_warning("symbol value '%s' invalid for %s",
					     p, sym->name);
			return 1;
		}
		break;
	default:
		;
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
sam ravnborg
sam ravnborg
318
92.98%
1
25.00%
yann e. morin
yann e. morin
18
5.26%
1
25.00%
arnaud lacombe
arnaud lacombe
6
1.75%
2
50.00%
Total
342
100.00%
4
100.00%


#define LINE_GROWTH 16


static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
{
	char *nline;
	size_t new_size = slen + 1;
	if (new_size > *n) {
		new_size += LINE_GROWTH - 1;
		new_size *= 2;
		nline = realloc(*lineptr, new_size);
		if (!nline)
			return -1;

		*lineptr = nline;
		*n = new_size;
	}

	(*lineptr)[slen] = c;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
cody p schafer
cody p schafer
93
100.00%
1
100.00%
Total
93
100.00%
1
100.00%



static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
{
	char *line = *lineptr;
	size_t slen = 0;

	for (;;) {
		int c = getc(stream);

		switch (c) {
		case '\n':
			if (add_byte(c, &line, slen, n) < 0)
				goto e_out;
			slen++;
			/* fall through */
		case EOF:
			if (add_byte('\0', &line, slen, n) < 0)
				goto e_out;
			*lineptr = line;
			if (slen == 0)
				return -1;
			return slen;
		default:
			if (add_byte(c, &line, slen, n) < 0)
				goto e_out;
			slen++;
		}
	}

e_out:
	line[slen-1] = '\0';
	*lineptr = line;
	return -1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
cody p schafer
cody p schafer
161
100.00%
1
100.00%
Total
161
100.00%
1
100.00%



int conf_read_simple(const char *name, int def)
{
	FILE *in = NULL;
	char   *line = NULL;
	size_t  line_asize = 0;
	char *p, *p2;
	struct symbol *sym;
	int i, def_flags;

	if (name) {
		in = zconf_fopen(name);
	} else {
		struct property *prop;

		name = conf_get_configname();
		in = zconf_fopen(name);
		if (in)
			goto load;
		sym_add_change_count(1);
		if (!sym_defconfig_list)
			return 1;

		for_all_defaults(sym_defconfig_list, prop) {
			if (expr_calc_value(prop->visible.expr) == no ||
			    prop->expr->type != E_SYMBOL)
				continue;
			name = conf_expand_value(prop->expr->left.sym->name);
			in = zconf_fopen(name);
			if (in) {
				conf_message(_("using defaults found in %s"),
					 name);
				goto load;
			}
		}
	}
	if (!in)
		return 1;

load:
	conf_filename = name;
	conf_lineno = 0;
	conf_warnings = 0;
	conf_unsaved = 0;

	def_flags = SYMBOL_DEF << def;
	for_all_symbols(i, sym) {
		sym->flags |= SYMBOL_CHANGED;
		sym->flags &= ~(def_flags|SYMBOL_VALID);
		if (sym_is_choice(sym))
			sym->flags |= def_flags;
		switch (sym->type) {
		case S_INT:
		case S_HEX:
		case S_STRING:
			if (sym->def[def].val)
				free(sym->def[def].val);
			/* fall through */
		default:
			sym->def[def].val = NULL;
			sym->def[def].tri = no;
		}
	}

	while (compat_getline(&line, &line_asize, in) != -1) {
		conf_lineno++;
		sym = NULL;
		if (line[0] == '#') {
			if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
				continue;
			p = strchr(line + 2 + strlen(CONFIG_), ' ');
			if (!p)
				continue;
			*p++ = 0;
			if (strncmp(p, "is not set", 10))
				continue;
			if (def == S_DEF_USER) {
				sym = sym_find(line + 2 + strlen(CONFIG_));
				if (!sym) {
					sym_add_change_count(1);
					goto setsym;
				}
			} else {
				sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
				if (sym->type == S_UNKNOWN)
					sym->type = S_BOOLEAN;
			}
			if (sym->flags & def_flags) {
				conf_warning("override: reassigning to symbol %s", sym->name);
			}
			switch (sym->type) {
			case S_BOOLEAN:
			case S_TRISTATE:
				sym->def[def].tri = no;
				sym->flags |= def_flags;
				break;
			default:
				;
			}
		} else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
			p = strchr(line + strlen(CONFIG_), '=');
			if (!p)
				continue;
			*p++ = 0;
			p2 = strchr(p, '\n');
			if (p2) {
				*p2-- = 0;
				if (*p2 == '\r')
					*p2 = 0;
			}
			if (def == S_DEF_USER) {
				sym = sym_find(line + strlen(CONFIG_));
				if (!sym) {
					sym_add_change_count(1);
					goto setsym;
				}
			} else {
				sym = sym_lookup(line + strlen(CONFIG_), 0);
				if (sym->type == S_UNKNOWN)
					sym->type = S_OTHER;
			}
			if (sym->flags & def_flags) {
				conf_warning("override: reassigning to symbol %s", sym->name);
			}
			if (conf_set_sym_val(sym, def, def_flags, p))
				continue;
		} else {
			if (line[0] != '\r' && line[0] != '\n')
				conf_warning("unexpected data: %.*s",
					     (int)strcspn(line, "\r\n"), line);

			continue;
		}
setsym:
		if (sym && sym_is_choice_value(sym)) {
			struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
			switch (sym->def[def].tri) {
			case no:
				break;
			case mod:
				if (cs->def[def].tri == yes) {
					conf_warning("%s creates inconsistent choice state", sym->name);
					cs->flags &= ~def_flags;
				}
				break;
			case yes:
				if (cs->def[def].tri != no)
					conf_warning("override: %s changes choice state", sym->name);
				cs->def[def].val = sym;
				break;
			}
			cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
		}
	}
	free(line);
	fclose(in);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
roman zippel
roman zippel
560
62.71%
15
51.72%
sam ravnborg
sam ravnborg
191
21.39%
2
6.90%
arnaud lacombe
arnaud lacombe
65
7.28%
3
10.34%
cody p schafer
cody p schafer
20
2.24%
1
3.45%
yann e. morin
yann e. morin
20
2.24%
1
3.45%
paul bolle
paul bolle
13
1.46%
1
3.45%
naohiro aota
naohiro aota
8
0.90%
1
3.45%
karsten wiese
karsten wiese
4
0.45%
1
3.45%
matthew wilcox
matthew wilcox
4
0.45%
1
3.45%
jan engelhardt
jan engelhardt
3
0.34%
1
3.45%
arnaldo carvalho de melo
arnaldo carvalho de melo
3
0.34%
1
3.45%
michal marek
michal marek
2
0.22%
1
3.45%
Total
893
100.00%
29
100.00%



int conf_read(const char *name)
{
	struct symbol *sym;
	int i;

	sym_set_change_count(0);

	if (conf_read_simple(name, S_DEF_USER)) {
		sym_calc_value(modules_sym);
		return 1;
	}

	sym_calc_value(modules_sym);

	for_all_symbols(i, sym) {
		sym_calc_value(sym);
		if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
			continue;
		if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
			/* check that calculated value agrees with saved value */
			switch (sym->type) {
			case S_BOOLEAN:
			case S_TRISTATE:
				if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
					break;
				if (!sym_is_choice(sym))
					continue;
				/* fall through */
			default:
				if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
					continue;
				break;
			}
		} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
			/* no previous value and not saved */
			continue;
		conf_unsaved++;
		/* maybe print value in verbose mode... */
	}

	for_all_symbols(i, sym) {
		if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
			/* Reset values of generates values, so they'll appear
                         * as new, if they should become visible, but that
                         * doesn't quite work if the Kconfig and the saved
                         * configuration disagree.
                         */
			if (sym->visible == no && !conf_unsaved)
				sym->flags &= ~SYMBOL_DEF_USER;
			switch (sym->type) {
			case S_STRING:
			case S_INT:
			case S_HEX:
				/* Reset a string value if it's out of range */
				if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
					break;
				sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
				conf_unsaved++;
				break;
			default:
				break;
			}
		}
	}

	sym_add_change_count(conf_warnings || conf_unsaved);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
roman zippel
roman zippel
264
91.99%
10
71.43%
al viro
al viro
12
4.18%
1
7.14%
karsten wiese
karsten wiese
6
2.09%
1
7.14%
arnaud lacombe
arnaud lacombe
5
1.74%
2
14.29%
Total
287
100.00%
14
100.00%

/*
 * Kconfig configuration printer
 *
 * This printer is used when generating the resulting configuration after
 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
 * passing a non-NULL argument to the printer.
 *
 */

static void

kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
{

	switch (sym->type) {
	case S_BOOLEAN:
	case S_TRISTATE:
		if (*value == 'n') {
			bool skip_unset = (arg != NULL);

			if (!skip_unset)
				fprintf(fp, "# %s%s is not set\n",
				    CONFIG_, sym->name);
			return;
		}
		break;
	default:
		break;
	}

	fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
arnaud lacombe
arnaud lacombe
62
66.67%
2
66.67%
sam ravnborg
sam ravnborg
31
33.33%
1
33.33%
Total
93
100.00%
3
100.00%


static void

kconfig_print_comment(FILE *fp, const char *value, void *arg)
{
	const char *p = value;
	size_t l;

	for (;;) {
		l = strcspn(p, "\n");
		fprintf(fp, "#");
		if (l) {
			fprintf(fp, " ");
			xfwrite(p, l, 1, fp);
			p += l;
		}
		fprintf(fp, "\n");
		if (*p++ == '\0')
			break;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
arnaud lacombe
arnaud lacombe
63
65.62%
1
33.33%
sam ravnborg
sam ravnborg
32
33.33%
1
33.33%
peter foley
peter foley
1
1.04%
1
33.33%
Total
96
100.00%
3
100.00%


static struct conf_printer kconfig_printer_cb =
{
	.print_symbol = kconfig_print_symbol,
	.print_comment = kconfig_print_comment,
};

/*
 * Header printer
 *
 * This printer is used when generating the `include/generated/autoconf.h' file.
 */

static void

header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
{

	switch (sym->type) {
	case S_BOOLEAN:
	case S_TRISTATE: {
		const char *suffix = "";

		switch (*value) {
		case 'n':
			break;
		case 'm':
			suffix = "_MODULE";
			/* fall through */
		default:
			fprintf(fp, "#define %s%s%s 1\n",
			    CONFIG_, sym->name, suffix);
		}
		break;
	}
	case S_HEX: {
		const char *prefix = "";

		if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
			prefix = "0x";
		fprintf(fp, "#define %s%s %s%s\n",
		    CONFIG_, sym->name, prefix, value);
		break;
	}
	case S_STRING:
	case S_INT:
		fprintf(fp, "#define %s%s %s\n",
		    CONFIG_, sym->name, value);
		break;
	default:
		break;
	}

}

Contributors
Person
Tokens
Prop
Commits
CommitProp
arnaud lacombe
arnaud lacombe
125
75.30%
4
66.67%
sam ravnborg
sam ravnborg
36
21.69%
1
16.67%
michal marek
michal marek
5
3.01%
1
16.67%
Total
166
100.00%
6
100.00%


static void

header_print_comment(FILE *fp, const char *value, void *arg)
{
	const char *p = value;
	size_t l;

	fprintf(fp, "/*\n");
	for (;;) {
		l = strcspn(p, "\n");
		fprintf(fp, " *");
		if (l) {
			fprintf(fp, " ");
			xfwrite(p, l, 1, fp);
			p += l;
		}
		fprintf(fp, "\n");
		if (*p++ == '\0')
			break;
	}
	fprintf(fp, " */\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
arnaud lacombe
arnaud lacombe
99
90.00%
2
50.00%
sam ravnborg
sam ravnborg
10
9.09%
1
25.00%
peter foley
peter foley
1
0.91%
1
25.00%
Total
110
100.00%
4
100.00%


static struct conf_printer header_printer_cb =
{
	.print_symbol = header_print_symbol,
	.print_comment = header_print_comment,
};

/*
 * Tristate printer
 *
 * This printer is used when generating the `include/config/tristate.conf' file.
 */

static void

tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
{

	if (sym->type == S_TRISTATE && *value != 'n')
		fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
arnaud lacombe
arnaud lacombe
54
91.53%
1
50.00%
sam ravnborg
sam ravnborg
5
8.47%
1
50.00%
Total
59
100.00%
2
100.00%


static struct conf_printer tristate_printer_cb =
{
	.print_symbol = tristate_print_symbol,
	.print_comment = kconfig_print_comment,
};



static void conf_write_symbol(FILE *fp, struct