286 int env_set(const char *varname, const char *varvalue)  in env_set()  argument
288 	const char * const argv[4] = { "setenv", varname, varvalue, NULL };  in env_set()
300 static int env_append(const char *varname, const char *varvalue)  in env_append()  argument
308 	if (!(gd->flags & GD_FLG_ENV_READY) || !varname)  in env_append()
311 	if (env_exist(varname, varvalue))  in env_append()
319 	oldvalue = env_get(varname);  in env_append()
340 	env_set(varname, newvalue);  in env_append()
346 static int env_replace(const char *varname, const char *substr,  in env_replace()  argument
353 	if (!(gd->flags & GD_FLG_ENV_READY) || !varname)  in env_replace()
356 	oldvalue = env_get(varname);  in env_replace()
398 	env_set(varname, newvalue);  in env_replace()
406 int env_update_filter(const char *varname, const char *varvalue,  in env_update_filter()  argument
420 	if (!(gd->flags & GD_FLG_ENV_READY) || !varname)  in env_update_filter()
424 	varargs = env_get(varname);  in env_update_filter()
426 		env_set(varname, varvalue);  in env_update_filter()
428 			env_delete(varname, ignore, 0);  in env_update_filter()
476 			env_append(varname, v_item);  in env_update_filter()
513 				env_replace(varname, a_item, v_item);  in env_update_filter()
524 			      __func__, v_item, varname);  in env_update_filter()
525 			env_append(varname, v_item);  in env_update_filter()
537 int env_update(const char *varname, const char *varvalue)  in env_update()  argument
539 	return env_update_filter(varname, varvalue, NULL);  in env_update()
542 int env_update_extract_subset(const char *varname,  in env_update_extract_subset()  argument
554 	varvalue = env_get(varname);  in env_update_extract_subset()
576 	env_set(varname, new_varvalue);  in env_update_extract_subset()
589 char *env_exist(const char *varname, const char *varvalue)  in env_exist()  argument
596 	if (!(gd->flags & GD_FLG_ENV_READY) || !varname)  in env_exist()
604 	oldvalue = env_get(varname);  in env_exist()
611 			      __func__, varvalue, varname);  in env_exist()
624 				      __func__, varvalue, varname);  in env_exist()
639 				      __func__, varvalue, varname);  in env_exist()
653 int env_delete(const char *varname, const char *varvalue, int complete_match)  in env_delete()  argument
659 	if (!(gd->flags & GD_FLG_ENV_READY) || !varname)  in env_delete()
662 	value = env_get(varname);  in env_delete()
667 		env_exist(varname, varvalue) : strstr(value, varvalue);  in env_delete()
694 int env_set_ulong(const char *varname, ulong value)  in env_set_ulong()  argument
699 	return env_set(varname, str);  in env_set_ulong()
709 int env_set_hex(const char *varname, ulong value)  in env_set_hex()  argument
714 	return env_set(varname, str);  in env_set_hex()
717 ulong env_get_hex(const char *varname, ulong default_val)  in env_get_hex()  argument
723 	s = env_get(varname);  in env_get_hex()