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Commit 14cdd3c4 authored by Roman Zippel's avatar Roman Zippel Committed by Sam Ravnborg
Browse files

kconfig: KCONFIG_OVERWRITECONFIG 



If you set KCONFIG_OVERWRITECONFIG in environment, Kconfig will not break
symlinks when .config is a symlink to somewhere else.

Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 250725aa

Makefile

+4 −2
Original line number Diff line number Diff line
@@ -178,6 +178,8 @@ CROSS_COMPILE ?= 
# Architecture as present in compile.h

UTS_MACHINE := $(ARCH)



KCONFIG_CONFIG	?= .config



# SHELL used by kbuild

CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \

	  else if [ -x /bin/bash ]; then echo /bin/bash; \
@@ -437,13 +439,13 @@ ifeq ($(dot-config),1) 
-include include/config/auto.conf



# To avoid any implicit rule to kick in, define an empty command

.config include/config/auto.conf.cmd: ;

$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;



# If .config is newer than include/config/auto.conf, someone tinkered

# with it and forgot to run make oldconfig.

# if auto.conf.cmd is missing then we are probarly in a cleaned tree so

# we execute the config step to be sure to catch updated Kconfig files

include/config/auto.conf: .config include/config/auto.conf.cmd

include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd

	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig



else

scripts/kconfig/confdata.c

+29 −17
Original line number Diff line number Diff line
@@ -21,8 +21,6 @@ static void conf_warning(const char *fmt, ...) 
static const char *conf_filename;

static int conf_lineno, conf_warnings, conf_unsaved;



const char conf_def_filename[] = ".config";



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



static void conf_warning(const char *fmt, ...)
@@ -36,6 +34,13 @@ static void conf_warning(const char *fmt, ...) 
	conf_warnings++;

}



const char *conf_get_configname(void)

{

	char *name = getenv("KCONFIG_CONFIG");



	return name ? name : ".config";

}



static char *conf_expand_value(const char *in)

{

	struct symbol *sym;
@@ -91,7 +96,7 @@ int conf_read_simple(const char *name, int def) 
	} else {

		struct property *prop;



		name = conf_def_filename;

		name = conf_get_configname();

		in = zconf_fopen(name);

		if (in)

			goto load;
@@ -381,7 +386,7 @@ int conf_write(const char *name) 
		if (!stat(name, &st) && S_ISDIR(st.st_mode)) {

			strcpy(dirname, name);

			strcat(dirname, "/");

			basename = conf_def_filename;

			basename = conf_get_configname();

		} else if ((slash = strrchr(name, '/'))) {

			int size = slash - name + 1;

			memcpy(dirname, name, size);
@@ -389,16 +394,24 @@ int conf_write(const char *name) 
			if (slash[1])

				basename = slash + 1;

			else

				basename = conf_def_filename;

				basename = conf_get_configname();

		} else

			basename = name;

	} else

		basename = conf_def_filename;

		basename = conf_get_configname();



	sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());

	sprintf(newname, "%s%s", dirname, basename);

	env = getenv("KCONFIG_OVERWRITECONFIG");

	if (!env || !*env) {

		sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());

		out = fopen(tmpname, "w");

	} else {

		*tmpname = 0;

		out = fopen(newname, "w");

	}

	if (!out)

		return 1;



	sym = sym_lookup("KERNELVERSION", 0);

	sym_calc_value(sym);

	time(&now);
@@ -498,19 +511,18 @@ int conf_write(const char *name) 
		}

	}

	fclose(out);

	if (!name || basename != conf_def_filename) {

		if (!name)

			name = conf_def_filename;

		sprintf(tmpname, "%s.old", name);

		rename(name, tmpname);

	}

	sprintf(tmpname, "%s%s", dirname, basename);

	if (rename(newname, tmpname))



	if (*tmpname) {

		strcat(dirname, name ? name : conf_get_configname());

		strcat(dirname, ".old");

		rename(newname, dirname);

		if (rename(tmpname, newname))

			return 1;

	}



	printf(_("#\n"

		 "# configuration written to %s\n"

		 "#\n"), tmpname);

		 "#\n"), newname);



	sym_change_count = 0;

scripts/kconfig/lkc.h

+0 −2
Original line number Diff line number Diff line
@@ -64,8 +64,6 @@ int zconf_lineno(void); 
char *zconf_curname(void);



/* confdata.c */

extern const char conf_def_filename[];



char *conf_get_default_confname(void);



/* kconfig_load.c */