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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#ifndef _ENVIRONMENT_H_
#define _ENVIRONMENT_H_
#include <linux/list.h>
#include <errno.h>
/**
* Managment of a environment variable
*/
struct variable_d {
struct list_head list;
char *name;
char *data;
};
struct env_context {
struct env_context *parent;
struct list_head local;
struct list_head global;
};
struct env_context *get_current_context(void);
char *var_val(struct variable_d *);
char *var_name(struct variable_d *);
#ifdef CONFIG_ENVIRONMENT_VARIABLES
const char *getenv(const char *);
int setenv(const char *, const char *);
void export_env_ull(const char *name, unsigned long long val);
int getenv_ull(const char *name, unsigned long long *val);
int getenv_ul(const char *name, unsigned long *val);
int getenv_uint(const char *name, unsigned int *val);
int getenv_bool(const char *var, int *val);
const char *getenv_nonempty(const char *var);
#else
static inline char *getenv(const char *var)
{
return NULL;
}
static inline int setenv(const char *var, const char *val)
{
return 0;
}
static inline void export_env_ull(const char *name, unsigned long long val) {}
static inline int getenv_ull(const char *name, unsigned long long *val)
{
return -EINVAL;
}
static inline int getenv_ul(const char *name, unsigned long *val)
{
return -EINVAL;
}
static inline int getenv_uint(const char *name, unsigned int *val)
{
return -EINVAL;
}
static inline int export(const char *var)
{
return -EINVAL;
}
static inline int getenv_bool(const char *var, int *val)
{
return -EINVAL;
}
static inline const char *getenv_nonempty(const char *var)
{
return NULL;
}
#endif
int env_pop_context(void);
int env_push_context(void);
int export(const char *);
#endif /* _ENVIRONMENT_H_ */
/**
* @file
* @brief Environment handling
*
* Important: This file will also be used on the host to create
* the default environment when building the barebox binary.
*/
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