From ae51f41d14f548d494ac41e0d21137c5a4c3f59c Mon Sep 17 00:00:00 2001 From: Iru Cai Date: Wed, 30 Oct 2019 14:21:52 +0800 Subject: import the U-Boot code and make it compile --- include/env_attr.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/env_attr.h (limited to 'include/env_attr.h') diff --git a/include/env_attr.h b/include/env_attr.h new file mode 100644 index 0000000..e0846cc --- /dev/null +++ b/include/env_attr.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2012 + * Joe Hershberger, National Instruments, joe.hershberger@ni.com + */ + +#ifndef __ENV_ATTR_H__ +#define __ENV_ATTR_H__ + +#define ENV_ATTR_LIST_DELIM ',' +#define ENV_ATTR_SEP ':' + +/* + * env_attr_walk takes as input an "attr_list" that takes the form: + * attributes = [^,:\s]* + * entry = name[:attributes] + * list = entry[,list] + * It will call the "callback" function with the "name" and "attributes" + * The callback may return a non-0 to abort the list walk. + * This return value will be passed through to the caller. + * 0 is returned on success. + */ +int env_attr_walk(const char *attr_list, + int (*callback)(const char *name, const char *attributes, void *priv), + void *priv); + +/* + * env_attr_lookup takes as input an "attr_list" with the same form as above. + * It also takes as input a "name" to look for. + * If the name is found in the list, it's value is copied into "attributes". + * There is no protection on attributes being too small for the value. + * It returns -1 if attributes is NULL, 1 if "name" is not found, 2 if + * "attr_list" is NULL. + * Returns 0 on success. + */ +int env_attr_lookup(const char *attr_list, const char *name, char *attributes); + +#endif /* __ENV_ATTR_H__ */ -- cgit v1.2.3