111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _ENVIRONMENT_H_
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#define _ENVIRONMENT_H_
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#include <linux/list.h>
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/**
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* Managment of a environment variable
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*/
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struct variable_d {
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struct list_head list;
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char *name;
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char *data;
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};
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struct env_context {
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struct env_context *parent;
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struct list_head local;
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struct list_head global;
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};
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struct env_context *get_current_context(void);
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char *var_val(struct variable_d *);
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char *var_name(struct variable_d *);
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#ifdef CONFIG_ENVIRONMENT_VARIABLES
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const char *getenv(const char *);
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int setenv(const char *, const char *);
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void export_env_ull(const char *name, unsigned long long val);
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int getenv_ull(const char *name, unsigned long long *val);
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int getenv_ul(const char *name, unsigned long *val);
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int getenv_uint(const char *name, unsigned int *val);
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int getenv_bool(const char *var, int *val);
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const char *getenv_nonempty(const char *var);
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#else
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static inline char *getenv(const char *var)
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{
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return NULL;
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}
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static inline int setenv(const char *var, const char *val)
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{
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return 0;
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}
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static inline void export_env_ull(const char *name, unsigned long long val) {}
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static inline int getenv_ull(const char *name, unsigned long long *val)
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{
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return -EINVAL;
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}
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static inline int getenv_ul(const char *name, unsigned long *val)
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{
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return -EINVAL;
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}
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static inline int getenv_uint(const char *name, unsigned int *val)
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{
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return -EINVAL;
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}
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static inline int export(const char *var)
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{
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return -EINVAL;
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}
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static inline int getenv_bool(const char *var, int *val)
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{
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return -EINVAL;
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}
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static inline const char *getenv_nonempty(const char *var)
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{
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return NULL;
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}
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#endif
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int env_pop_context(void);
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int env_push_context(void);
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int export(const char *);
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#endif /* _ENVIRONMENT_H_ */
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/**
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* @file
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* @brief Environment handling
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*
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* Important: This file will also be used on the host to create
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* the default environment when building the barebox binary.
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*/
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