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/*
* (C) Copyright 2017
* Stefano Babic <stefano.babic@swupdate.org>
*
* SPDX-License-Identifier: GPL-2.0-only
*/
#pragma once
#include <stdbool.h>
#define BOOTLOADER_EBG "ebg"
#define BOOTLOADER_NONE "none"
#define BOOTLOADER_GRUB "grub"
#define BOOTLOADER_UBOOT "uboot"
#define BOOTLOADER_CBOOT "cboot"
#define load_symbol(handle, container, fname) \
*(void**)(container) = dlsym(handle, fname); \
if (dlerror() != NULL) { \
(void)dlclose(handle); \
return NULL; \
}
typedef struct {
int (*env_set)(const char *, const char *);
int (*env_unset)(const char *);
char* (*env_get)(const char *);
int (*apply_list)(const char *);
} bootloader;
/*
* register_bootloader - register bootloader.
*
* @name : bootloader's name to register.
* @bootloader : struct bootloader with bootloader details.
*
* Return:
* 0 on success, -ENOMEM on error.
*/
int register_bootloader(const char *name, bootloader *bl);
/*
* set_bootloader - set bootloader to use.
*
* @name : bootloader's name to set.
*
* Return:
* 0 on success, -ENOENT on error.
*/
int set_bootloader(const char *name);
/*
* get_bootloader - get set bootloader's name
*
* Return:
* name on success, NULL on error.
*/
const char* get_bootloader(void);
/*
* is_bootloader - Test whether bootloader is currently selected
*
* @name : bootloader name to check if it's the currently selected one
*
* Return:
* true if name is currently selected bootloader, false otherwise
*/
bool is_bootloader(const char *name);
/*
* print_registered_bootloaders - print registered bootloaders
*/
void print_registered_bootloaders(void);
/*
* bootloader_env_set - modify a variable
*
* @name : variable
* @value : value to be set
*
* Return:
* 0 on success
*/
extern int (*bootloader_env_set)(const char *, const char *);
/*
* bootloader_env_unset - drop a variable
*
* @name : variable
*
* Return:
* 0 on success
*/
extern int (*bootloader_env_unset)(const char *);
/*
* bootloader_env_get - get value of a variable
*
* @name : variable
*
* Return:
* string if variable is found
* NULL if no variable with name is found
*/
extern char* (*bootloader_env_get)(const char *);
/*
* bootloader_apply_list - set multiple variables
*
* @filename : file in format <variable>=<value>
*
* Return:
* 0 on success
*/
extern int (*bootloader_apply_list)(const char *);
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